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authorFlorian Dold <florian.dold@gmail.com>2017-05-27 17:36:13 +0200
committerFlorian Dold <florian.dold@gmail.com>2017-05-27 17:36:13 +0200
commit5f466137ad6ac596600e3ff53c9b786815398445 (patch)
treef914c221874f0b16bf3def7ac01d59d1a99a3b0b /node_modules/esprima
parentc9f5ac8e763eda19aa0564179300cfff76785435 (diff)
downloadwallet-core-5f466137ad6ac596600e3ff53c9b786815398445.tar.xz
node_modules, clean up package.json
Diffstat (limited to 'node_modules/esprima')
-rw-r--r--node_modules/esprima/ChangeLog35
-rw-r--r--node_modules/esprima/LICENSE.BSD2
-rw-r--r--node_modules/esprima/README.md35
-rwxr-xr-xnode_modules/esprima/bin/esparse.js57
-rwxr-xr-xnode_modules/esprima/bin/esvalidate.js93
-rw-r--r--node_modules/esprima/esprima.js5740
-rw-r--r--node_modules/esprima/package.json72
7 files changed, 203 insertions, 5831 deletions
diff --git a/node_modules/esprima/ChangeLog b/node_modules/esprima/ChangeLog
index fd687ae3c..23bcdc788 100644
--- a/node_modules/esprima/ChangeLog
+++ b/node_modules/esprima/ChangeLog
@@ -1,3 +1,38 @@
+2016-12-22: Version 3.1.3
+
+ * Support binding patterns as rest element (issue 1681)
+ * Account for different possible arguments of a yield expression (issue 1469)
+
+2016-11-24: Version 3.1.2
+
+ * Ensure that import specifier is more restrictive (issue 1615)
+ * Fix duplicated JSX tokens (issue 1613)
+ * Scan template literal in a JSX expression container (issue 1622)
+ * Improve XHTML entity scanning in JSX (issue 1629)
+
+2016-10-31: Version 3.1.1
+
+ * Fix assignment expression problem in an export declaration (issue 1596)
+ * Fix incorrect tokenization of hex digits (issue 1605)
+
+2016-10-09: Version 3.1.0
+
+ * Do not implicitly collect comments when comment attachment is specified (issue 1553)
+ * Fix incorrect handling of duplicated proto shorthand fields (issue 1485)
+ * Prohibit initialization in some variants of for statements (issue 1309, 1561)
+ * Fix incorrect parsing of export specifier (issue 1578)
+ * Fix ESTree compatibility for assignment pattern (issue 1575)
+
+2016-09-03: Version 3.0.0
+
+ * Support ES2016 exponentiation expression (issue 1490)
+ * Support JSX syntax (issue 1467)
+ * Use the latest Unicode 8.0 (issue 1475)
+ * Add the support for syntax node delegate (issue 1435)
+ * Fix ESTree compatibility on meta property (issue 1338)
+ * Fix ESTree compatibility on default parameter value (issue 1081)
+ * Fix ESTree compatibility on try handler (issue 1030)
+
2016-08-23: Version 2.7.3
* Fix tokenizer confusion with a comment (issue 1493, 1516)
diff --git a/node_modules/esprima/LICENSE.BSD b/node_modules/esprima/LICENSE.BSD
index 17557eceb..7a55160f5 100644
--- a/node_modules/esprima/LICENSE.BSD
+++ b/node_modules/esprima/LICENSE.BSD
@@ -1,4 +1,4 @@
-Copyright (c) jQuery Foundation, Inc. and Contributors, All Rights Reserved.
+Copyright JS Foundation and other contributors, https://js.foundation/
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
diff --git a/node_modules/esprima/README.md b/node_modules/esprima/README.md
index 749454f44..e59d08333 100644
--- a/node_modules/esprima/README.md
+++ b/node_modules/esprima/README.md
@@ -12,16 +12,33 @@ with the help of [many contributors](https://github.com/jquery/esprima/contribut
### Features
-- Full support for ECMAScript 6 ([ECMA-262](http://www.ecma-international.org/publications/standards/Ecma-262.htm))
-- Sensible [syntax tree format](https://github.com/estree/estree/blob/master/spec.md) as standardized by [ESTree project](https://github.com/estree/estree)
+- Full support for ECMAScript 2016 ([ECMA-262 7th Edition](http://www.ecma-international.org/publications/standards/Ecma-262.htm))
+- Sensible [syntax tree format](https://github.com/estree/estree/blob/master/es5.md) as standardized by [ESTree project](https://github.com/estree/estree)
+- Experimental support for [JSX](https://facebook.github.io/jsx/), a syntax extension for [React](https://facebook.github.io/react/)
- Optional tracking of syntax node location (index-based and line-column)
-- [Heavily tested](http://esprima.org/test/ci.html) (~1250 [unit tests](https://github.com/jquery/esprima/tree/master/test/fixtures) with [full code coverage](https://codecov.io/github/jquery/esprima))
+- [Heavily tested](http://esprima.org/test/ci.html) (~1300 [unit tests](https://github.com/jquery/esprima/tree/master/test/fixtures) with [full code coverage](https://codecov.io/github/jquery/esprima))
-Esprima serves as a **building block** for some JavaScript
-language tools, from [code instrumentation](http://esprima.org/demo/functiontrace.html)
-to [editor autocompletion](http://esprima.org/demo/autocomplete.html).
+### API
-Esprima runs on many popular web browsers, as well as other ECMAScript platforms such as
-[Rhino](http://www.mozilla.org/rhino), [Nashorn](http://openjdk.java.net/projects/nashorn/), and [Node.js](https://npmjs.org/package/esprima).
+Esprima can be used to perform [lexical analysis](https://en.wikipedia.org/wiki/Lexical_analysis) (tokenization) or [syntactic analysis](https://en.wikipedia.org/wiki/Parsing) (parsing) of a JavaScript program.
-For more information, check the web site [esprima.org](http://esprima.org).
+A simple example on Node.js REPL:
+
+```javascript
+> var esprima = require('esprima');
+> var program = 'const answer = 42';
+
+> esprima.tokenize(program);
+[ { type: 'Keyword', value: 'const' },
+ { type: 'Identifier', value: 'answer' },
+ { type: 'Punctuator', value: '=' },
+ { type: 'Numeric', value: '42' } ]
+
+> esprima.parse(program);
+{ type: 'Program',
+ body:
+ [ { type: 'VariableDeclaration',
+ declarations: [Object],
+ kind: 'const' } ],
+ sourceType: 'script' }
+```
diff --git a/node_modules/esprima/bin/esparse.js b/node_modules/esprima/bin/esparse.js
index 98bdbf48f..45d05fbb7 100755
--- a/node_modules/esprima/bin/esparse.js
+++ b/node_modules/esprima/bin/esparse.js
@@ -1,6 +1,6 @@
#!/usr/bin/env node
/*
- Copyright (c) jQuery Foundation, Inc. and Contributors, All Rights Reserved.
+ Copyright JS Foundation and other contributors, https://js.foundation/
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
@@ -25,11 +25,15 @@
/*jslint sloppy:true node:true rhino:true */
-var fs, esprima, fname, content, options, syntax;
+var fs, esprima, fname, forceFile, content, options, syntax;
if (typeof require === 'function') {
fs = require('fs');
- esprima = require('esprima');
+ try {
+ esprima = require('esprima');
+ } catch (e) {
+ esprima = require('../');
+ }
} else if (typeof load === 'function') {
try {
load('esprima.js');
@@ -49,7 +53,7 @@ if (typeof console === 'undefined' && typeof process === 'undefined') {
function showUsage() {
console.log('Usage:');
- console.log(' esparse [options] file.js');
+ console.log(' esparse [options] [file.js]');
console.log();
console.log('Available options:');
console.log();
@@ -64,15 +68,18 @@ function showUsage() {
process.exit(1);
}
-if (process.argv.length <= 2) {
- showUsage();
-}
-
options = {};
process.argv.splice(2).forEach(function (entry) {
- if (entry === '-h' || entry === '--help') {
+ if (forceFile || entry === '-' || entry.slice(0, 1) !== '-') {
+ if (typeof fname === 'string') {
+ console.log('Error: more than one input file.');
+ process.exit(1);
+ } else {
+ fname = entry;
+ }
+ } else if (entry === '-h' || entry === '--help') {
showUsage();
} else if (entry === '-v' || entry === '--version') {
console.log('ECMAScript Parser (using Esprima version', esprima.version, ')');
@@ -90,22 +97,14 @@ process.argv.splice(2).forEach(function (entry) {
options.tokens = true;
} else if (entry === '--tolerant') {
options.tolerant = true;
- } else if (entry.slice(0, 2) === '--') {
+ } else if (entry === '--') {
+ forceFile = true;
+ } else {
console.log('Error: unknown option ' + entry + '.');
process.exit(1);
- } else if (typeof fname === 'string') {
- console.log('Error: more than one input file.');
- process.exit(1);
- } else {
- fname = entry;
}
});
-if (typeof fname !== 'string') {
- console.log('Error: no input file.');
- process.exit(1);
-}
-
// Special handling for regular expression literal since we need to
// convert it to a string literal, otherwise it will be decoded
// as object "{}" and the regular expression would be lost.
@@ -116,10 +115,24 @@ function adjustRegexLiteral(key, value) {
return value;
}
-try {
- content = fs.readFileSync(fname, 'utf-8');
+function run(content) {
syntax = esprima.parse(content, options);
console.log(JSON.stringify(syntax, adjustRegexLiteral, 4));
+}
+
+try {
+ if (fname && (fname !== '-' || forceFile)) {
+ run(fs.readFileSync(fname, 'utf-8'));
+ } else {
+ var content = '';
+ process.stdin.resume();
+ process.stdin.on('data', function(chunk) {
+ content += chunk;
+ });
+ process.stdin.on('end', function() {
+ run(content);
+ });
+ }
} catch (e) {
console.log('Error: ' + e.message);
process.exit(1);
diff --git a/node_modules/esprima/bin/esvalidate.js b/node_modules/esprima/bin/esvalidate.js
index f522dec29..4faf760e2 100755
--- a/node_modules/esprima/bin/esvalidate.js
+++ b/node_modules/esprima/bin/esvalidate.js
@@ -1,6 +1,6 @@
#!/usr/bin/env node
/*
- Copyright (c) jQuery Foundation, Inc. and Contributors, All Rights Reserved.
+ Copyright JS Foundation and other contributors, https://js.foundation/
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
@@ -26,7 +26,7 @@
/*jslint sloppy:true plusplus:true node:true rhino:true */
/*global phantom:true */
-var fs, system, esprima, options, fnames, count;
+var fs, system, esprima, options, fnames, forceFile, count;
if (typeof esprima === 'undefined') {
// PhantomJS can only require() relative files
@@ -36,7 +36,11 @@ if (typeof esprima === 'undefined') {
esprima = require('./esprima');
} else if (typeof require === 'function') {
fs = require('fs');
- esprima = require('esprima');
+ try {
+ esprima = require('esprima');
+ } catch (e) {
+ esprima = require('../');
+ }
} else if (typeof load === 'function') {
try {
load('esprima.js');
@@ -51,7 +55,10 @@ if (typeof phantom === 'object') {
fs.readFileSync = fs.read;
process = {
argv: [].slice.call(system.args),
- exit: phantom.exit
+ exit: phantom.exit,
+ on: function (evt, callback) {
+ callback();
+ }
};
process.argv.unshift('phantomjs');
}
@@ -60,14 +67,20 @@ if (typeof phantom === 'object') {
if (typeof console === 'undefined' && typeof process === 'undefined') {
console = { log: print };
fs = { readFileSync: readFile };
- process = { argv: arguments, exit: quit };
+ process = {
+ argv: arguments,
+ exit: quit,
+ on: function (evt, callback) {
+ callback();
+ }
+ };
process.argv.unshift('esvalidate.js');
process.argv.unshift('rhino');
}
function showUsage() {
console.log('Usage:');
- console.log(' esvalidate [options] file.js');
+ console.log(' esvalidate [options] [file.js...]');
console.log();
console.log('Available options:');
console.log();
@@ -77,10 +90,6 @@ function showUsage() {
process.exit(1);
}
-if (process.argv.length <= 2) {
- showUsage();
-}
-
options = {
format: 'plain'
};
@@ -89,7 +98,9 @@ fnames = [];
process.argv.splice(2).forEach(function (entry) {
- if (entry === '-h' || entry === '--help') {
+ if (forceFile || entry === '-' || entry.slice(0, 1) !== '-') {
+ fnames.push(entry);
+ } else if (entry === '-h' || entry === '--help') {
showUsage();
} else if (entry === '-v' || entry === '--version') {
console.log('ECMAScript Validator (using Esprima version', esprima.version, ')');
@@ -101,17 +112,16 @@ process.argv.splice(2).forEach(function (entry) {
console.log('Error: unknown report format ' + options.format + '.');
process.exit(1);
}
- } else if (entry.slice(0, 2) === '--') {
+ } else if (entry === '--') {
+ forceFile = true;
+ } else {
console.log('Error: unknown option ' + entry + '.');
process.exit(1);
- } else {
- fnames.push(entry);
}
});
if (fnames.length === 0) {
- console.log('Error: no input file.');
- process.exit(1);
+ fnames.push('');
}
if (options.format === 'junit') {
@@ -120,10 +130,13 @@ if (options.format === 'junit') {
}
count = 0;
-fnames.forEach(function (fname) {
- var content, timestamp, syntax, name;
+
+function run(fname, content) {
+ var timestamp, syntax, name;
try {
- content = fs.readFileSync(fname, 'utf-8');
+ if (typeof content !== 'string') {
+ throw content;
+ }
if (content[0] === '#' && content[1] === '!') {
content = '//' + content.substr(2, content.length);
@@ -184,16 +197,40 @@ fnames.forEach(function (fname) {
console.log('Error: ' + e.message);
}
}
+}
+
+fnames.forEach(function (fname) {
+ var content = '';
+ try {
+ if (fname && (fname !== '-' || forceFile)) {
+ content = fs.readFileSync(fname, 'utf-8');
+ } else {
+ fname = '';
+ process.stdin.resume();
+ process.stdin.on('data', function(chunk) {
+ content += chunk;
+ });
+ process.stdin.on('end', function() {
+ run(fname, content);
+ });
+ return;
+ }
+ } catch (e) {
+ content = e;
+ }
+ run(fname, content);
});
-if (options.format === 'junit') {
- console.log('</testsuites>');
-}
+process.on('exit', function () {
+ if (options.format === 'junit') {
+ console.log('</testsuites>');
+ }
-if (count > 0) {
- process.exit(1);
-}
+ if (count > 0) {
+ process.exit(1);
+ }
-if (count === 0 && typeof phantom === 'object') {
- process.exit(0);
-}
+ if (count === 0 && typeof phantom === 'object') {
+ process.exit(0);
+ }
+});
diff --git a/node_modules/esprima/esprima.js b/node_modules/esprima/esprima.js
deleted file mode 100644
index 0cb0a9361..000000000
--- a/node_modules/esprima/esprima.js
+++ /dev/null
@@ -1,5740 +0,0 @@
-/*
- Copyright (c) jQuery Foundation, Inc. and Contributors, All Rights Reserved.
-
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions are met:
-
- * Redistributions of source code must retain the above copyright
- notice, this list of conditions and the following disclaimer.
- * Redistributions in binary form must reproduce the above copyright
- notice, this list of conditions and the following disclaimer in the
- documentation and/or other materials provided with the distribution.
-
- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
- DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
-
-(function (root, factory) {
- 'use strict';
-
- // Universal Module Definition (UMD) to support AMD, CommonJS/Node.js,
- // Rhino, and plain browser loading.
-
- /* istanbul ignore next */
- if (typeof define === 'function' && define.amd) {
- define(['exports'], factory);
- } else if (typeof exports !== 'undefined') {
- factory(exports);
- } else {
- factory((root.esprima = {}));
- }
-}(this, function (exports) {
- 'use strict';
-
- var Token,
- TokenName,
- FnExprTokens,
- Syntax,
- PlaceHolders,
- Messages,
- Regex,
- source,
- strict,
- index,
- lineNumber,
- lineStart,
- hasLineTerminator,
- lastIndex,
- lastLineNumber,
- lastLineStart,
- startIndex,
- startLineNumber,
- startLineStart,
- scanning,
- length,
- lookahead,
- state,
- extra,
- isBindingElement,
- isAssignmentTarget,
- firstCoverInitializedNameError;
-
- Token = {
- BooleanLiteral: 1,
- EOF: 2,
- Identifier: 3,
- Keyword: 4,
- NullLiteral: 5,
- NumericLiteral: 6,
- Punctuator: 7,
- StringLiteral: 8,
- RegularExpression: 9,
- Template: 10
- };
-
- TokenName = {};
- TokenName[Token.BooleanLiteral] = 'Boolean';
- TokenName[Token.EOF] = '<end>';
- TokenName[Token.Identifier] = 'Identifier';
- TokenName[Token.Keyword] = 'Keyword';
- TokenName[Token.NullLiteral] = 'Null';
- TokenName[Token.NumericLiteral] = 'Numeric';
- TokenName[Token.Punctuator] = 'Punctuator';
- TokenName[Token.StringLiteral] = 'String';
- TokenName[Token.RegularExpression] = 'RegularExpression';
- TokenName[Token.Template] = 'Template';
-
- // A function following one of those tokens is an expression.
- FnExprTokens = ['(', '{', '[', 'in', 'typeof', 'instanceof', 'new',
- 'return', 'case', 'delete', 'throw', 'void',
- // assignment operators
- '=', '+=', '-=', '*=', '/=', '%=', '<<=', '>>=', '>>>=',
- '&=', '|=', '^=', ',',
- // binary/unary operators
- '+', '-', '*', '/', '%', '++', '--', '<<', '>>', '>>>', '&',
- '|', '^', '!', '~', '&&', '||', '?', ':', '===', '==', '>=',
- '<=', '<', '>', '!=', '!=='];
-
- Syntax = {
- AssignmentExpression: 'AssignmentExpression',
- AssignmentPattern: 'AssignmentPattern',
- ArrayExpression: 'ArrayExpression',
- ArrayPattern: 'ArrayPattern',
- ArrowFunctionExpression: 'ArrowFunctionExpression',
- BlockStatement: 'BlockStatement',
- BinaryExpression: 'BinaryExpression',
- BreakStatement: 'BreakStatement',
- CallExpression: 'CallExpression',
- CatchClause: 'CatchClause',
- ClassBody: 'ClassBody',
- ClassDeclaration: 'ClassDeclaration',
- ClassExpression: 'ClassExpression',
- ConditionalExpression: 'ConditionalExpression',
- ContinueStatement: 'ContinueStatement',
- DoWhileStatement: 'DoWhileStatement',
- DebuggerStatement: 'DebuggerStatement',
- EmptyStatement: 'EmptyStatement',
- ExportAllDeclaration: 'ExportAllDeclaration',
- ExportDefaultDeclaration: 'ExportDefaultDeclaration',
- ExportNamedDeclaration: 'ExportNamedDeclaration',
- ExportSpecifier: 'ExportSpecifier',
- ExpressionStatement: 'ExpressionStatement',
- ForStatement: 'ForStatement',
- ForOfStatement: 'ForOfStatement',
- ForInStatement: 'ForInStatement',
- FunctionDeclaration: 'FunctionDeclaration',
- FunctionExpression: 'FunctionExpression',
- Identifier: 'Identifier',
- IfStatement: 'IfStatement',
- ImportDeclaration: 'ImportDeclaration',
- ImportDefaultSpecifier: 'ImportDefaultSpecifier',
- ImportNamespaceSpecifier: 'ImportNamespaceSpecifier',
- ImportSpecifier: 'ImportSpecifier',
- Literal: 'Literal',
- LabeledStatement: 'LabeledStatement',
- LogicalExpression: 'LogicalExpression',
- MemberExpression: 'MemberExpression',
- MetaProperty: 'MetaProperty',
- MethodDefinition: 'MethodDefinition',
- NewExpression: 'NewExpression',
- ObjectExpression: 'ObjectExpression',
- ObjectPattern: 'ObjectPattern',
- Program: 'Program',
- Property: 'Property',
- RestElement: 'RestElement',
- ReturnStatement: 'ReturnStatement',
- SequenceExpression: 'SequenceExpression',
- SpreadElement: 'SpreadElement',
- Super: 'Super',
- SwitchCase: 'SwitchCase',
- SwitchStatement: 'SwitchStatement',
- TaggedTemplateExpression: 'TaggedTemplateExpression',
- TemplateElement: 'TemplateElement',
- TemplateLiteral: 'TemplateLiteral',
- ThisExpression: 'ThisExpression',
- ThrowStatement: 'ThrowStatement',
- TryStatement: 'TryStatement',
- UnaryExpression: 'UnaryExpression',
- UpdateExpression: 'UpdateExpression',
- VariableDeclaration: 'VariableDeclaration',
- VariableDeclarator: 'VariableDeclarator',
- WhileStatement: 'WhileStatement',
- WithStatement: 'WithStatement',
- YieldExpression: 'YieldExpression'
- };
-
- PlaceHolders = {
- ArrowParameterPlaceHolder: 'ArrowParameterPlaceHolder'
- };
-
- // Error messages should be identical to V8.
- Messages = {
- UnexpectedToken: 'Unexpected token %0',
- UnexpectedNumber: 'Unexpected number',
- UnexpectedString: 'Unexpected string',
- UnexpectedIdentifier: 'Unexpected identifier',
- UnexpectedReserved: 'Unexpected reserved word',
- UnexpectedTemplate: 'Unexpected quasi %0',
- UnexpectedEOS: 'Unexpected end of input',
- NewlineAfterThrow: 'Illegal newline after throw',
- InvalidRegExp: 'Invalid regular expression',
- UnterminatedRegExp: 'Invalid regular expression: missing /',
- InvalidLHSInAssignment: 'Invalid left-hand side in assignment',
- InvalidLHSInForIn: 'Invalid left-hand side in for-in',
- InvalidLHSInForLoop: 'Invalid left-hand side in for-loop',
- MultipleDefaultsInSwitch: 'More than one default clause in switch statement',
- NoCatchOrFinally: 'Missing catch or finally after try',
- UnknownLabel: 'Undefined label \'%0\'',
- Redeclaration: '%0 \'%1\' has already been declared',
- IllegalContinue: 'Illegal continue statement',
- IllegalBreak: 'Illegal break statement',
- IllegalReturn: 'Illegal return statement',
- StrictModeWith: 'Strict mode code may not include a with statement',
- StrictCatchVariable: 'Catch variable may not be eval or arguments in strict mode',
- StrictVarName: 'Variable name may not be eval or arguments in strict mode',
- StrictParamName: 'Parameter name eval or arguments is not allowed in strict mode',
- StrictParamDupe: 'Strict mode function may not have duplicate parameter names',
- StrictFunctionName: 'Function name may not be eval or arguments in strict mode',
- StrictOctalLiteral: 'Octal literals are not allowed in strict mode.',
- StrictDelete: 'Delete of an unqualified identifier in strict mode.',
- StrictLHSAssignment: 'Assignment to eval or arguments is not allowed in strict mode',
- StrictLHSPostfix: 'Postfix increment/decrement may not have eval or arguments operand in strict mode',
- StrictLHSPrefix: 'Prefix increment/decrement may not have eval or arguments operand in strict mode',
- StrictReservedWord: 'Use of future reserved word in strict mode',
- TemplateOctalLiteral: 'Octal literals are not allowed in template strings.',
- ParameterAfterRestParameter: 'Rest parameter must be last formal parameter',
- DefaultRestParameter: 'Unexpected token =',
- ObjectPatternAsRestParameter: 'Unexpected token {',
- DuplicateProtoProperty: 'Duplicate __proto__ fields are not allowed in object literals',
- ConstructorSpecialMethod: 'Class constructor may not be an accessor',
- DuplicateConstructor: 'A class may only have one constructor',
- StaticPrototype: 'Classes may not have static property named prototype',
- MissingFromClause: 'Unexpected token',
- NoAsAfterImportNamespace: 'Unexpected token',
- InvalidModuleSpecifier: 'Unexpected token',
- IllegalImportDeclaration: 'Unexpected token',
- IllegalExportDeclaration: 'Unexpected token',
- DuplicateBinding: 'Duplicate binding %0'
- };
-
- // See also tools/generate-unicode-regex.js.
- Regex = {
- // ECMAScript 6/Unicode v7.0.0 NonAsciiIdentifierStart:
- NonAsciiIdentifierStart: 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-
- // ECMAScript 6/Unicode v7.0.0 NonAsciiIdentifierPart:
- NonAsciiIdentifierPart: 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- };
-
- // Ensure the condition is true, otherwise throw an error.
- // This is only to have a better contract semantic, i.e. another safety net
- // to catch a logic error. The condition shall be fulfilled in normal case.
- // Do NOT use this to enforce a certain condition on any user input.
-
- function assert(condition, message) {
- /* istanbul ignore if */
- if (!condition) {
- throw new Error('ASSERT: ' + message);
- }
- }
-
- function isDecimalDigit(ch) {
- return (ch >= 0x30 && ch <= 0x39); // 0..9
- }
-
- function isHexDigit(ch) {
- return '0123456789abcdefABCDEF'.indexOf(ch) >= 0;
- }
-
- function isOctalDigit(ch) {
- return '01234567'.indexOf(ch) >= 0;
- }
-
- function octalToDecimal(ch) {
- // \0 is not octal escape sequence
- var octal = (ch !== '0'), code = '01234567'.indexOf(ch);
-
- if (index < length && isOctalDigit(source[index])) {
- octal = true;
- code = code * 8 + '01234567'.indexOf(source[index++]);
-
- // 3 digits are only allowed when string starts
- // with 0, 1, 2, 3
- if ('0123'.indexOf(ch) >= 0 &&
- index < length &&
- isOctalDigit(source[index])) {
- code = code * 8 + '01234567'.indexOf(source[index++]);
- }
- }
-
- return {
- code: code,
- octal: octal
- };
- }
-
- // ECMA-262 11.2 White Space
-
- function isWhiteSpace(ch) {
- return (ch === 0x20) || (ch === 0x09) || (ch === 0x0B) || (ch === 0x0C) || (ch === 0xA0) ||
- (ch >= 0x1680 && [0x1680, 0x180E, 0x2000, 0x2001, 0x2002, 0x2003, 0x2004, 0x2005, 0x2006, 0x2007, 0x2008, 0x2009, 0x200A, 0x202F, 0x205F, 0x3000, 0xFEFF].indexOf(ch) >= 0);
- }
-
- // ECMA-262 11.3 Line Terminators
-
- function isLineTerminator(ch) {
- return (ch === 0x0A) || (ch === 0x0D) || (ch === 0x2028) || (ch === 0x2029);
- }
-
- // ECMA-262 11.6 Identifier Names and Identifiers
-
- function fromCodePoint(cp) {
- return (cp < 0x10000) ? String.fromCharCode(cp) :
- String.fromCharCode(0xD800 + ((cp - 0x10000) >> 10)) +
- String.fromCharCode(0xDC00 + ((cp - 0x10000) & 1023));
- }
-
- function isIdentifierStart(ch) {
- return (ch === 0x24) || (ch === 0x5F) || // $ (dollar) and _ (underscore)
- (ch >= 0x41 && ch <= 0x5A) || // A..Z
- (ch >= 0x61 && ch <= 0x7A) || // a..z
- (ch === 0x5C) || // \ (backslash)
- ((ch >= 0x80) && Regex.NonAsciiIdentifierStart.test(fromCodePoint(ch)));
- }
-
- function isIdentifierPart(ch) {
- return (ch === 0x24) || (ch === 0x5F) || // $ (dollar) and _ (underscore)
- (ch >= 0x41 && ch <= 0x5A) || // A..Z
- (ch >= 0x61 && ch <= 0x7A) || // a..z
- (ch >= 0x30 && ch <= 0x39) || // 0..9
- (ch === 0x5C) || // \ (backslash)
- ((ch >= 0x80) && Regex.NonAsciiIdentifierPart.test(fromCodePoint(ch)));
- }
-
- // ECMA-262 11.6.2.2 Future Reserved Words
-
- function isFutureReservedWord(id) {
- switch (id) {
- case 'enum':
- case 'export':
- case 'import':
- case 'super':
- return true;
- default:
- return false;
- }
- }
-
- function isStrictModeReservedWord(id) {
- switch (id) {
- case 'implements':
- case 'interface':
- case 'package':
- case 'private':
- case 'protected':
- case 'public':
- case 'static':
- case 'yield':
- case 'let':
- return true;
- default:
- return false;
- }
- }
-
- function isRestrictedWord(id) {
- return id === 'eval' || id === 'arguments';
- }
-
- // ECMA-262 11.6.2.1 Keywords
-
- function isKeyword(id) {
- switch (id.length) {
- case 2:
- return (id === 'if') || (id === 'in') || (id === 'do');
- case 3:
- return (id === 'var') || (id === 'for') || (id === 'new') ||
- (id === 'try') || (id === 'let');
- case 4:
- return (id === 'this') || (id === 'else') || (id === 'case') ||
- (id === 'void') || (id === 'with') || (id === 'enum');
- case 5:
- return (id === 'while') || (id === 'break') || (id === 'catch') ||
- (id === 'throw') || (id === 'const') || (id === 'yield') ||
- (id === 'class') || (id === 'super');
- case 6:
- return (id === 'return') || (id === 'typeof') || (id === 'delete') ||
- (id === 'switch') || (id === 'export') || (id === 'import');
- case 7:
- return (id === 'default') || (id === 'finally') || (id === 'extends');
- case 8:
- return (id === 'function') || (id === 'continue') || (id === 'debugger');
- case 10:
- return (id === 'instanceof');
- default:
- return false;
- }
- }
-
- // ECMA-262 11.4 Comments
-
- function addComment(type, value, start, end, loc) {
- var comment;
-
- assert(typeof start === 'number', 'Comment must have valid position');
-
- state.lastCommentStart = start;
-
- comment = {
- type: type,
- value: value
- };
- if (extra.range) {
- comment.range = [start, end];
- }
- if (extra.loc) {
- comment.loc = loc;
- }
- extra.comments.push(comment);
- if (extra.attachComment) {
- extra.leadingComments.push(comment);
- extra.trailingComments.push(comment);
- }
- if (extra.tokenize) {
- comment.type = comment.type + 'Comment';
- if (extra.delegate) {
- comment = extra.delegate(comment);
- }
- extra.tokens.push(comment);
- }
- }
-
- function skipSingleLineComment(offset) {
- var start, loc, ch, comment;
-
- start = index - offset;
- loc = {
- start: {
- line: lineNumber,
- column: index - lineStart - offset
- }
- };
-
- while (index < length) {
- ch = source.charCodeAt(index);
- ++index;
- if (isLineTerminator(ch)) {
- hasLineTerminator = true;
- if (extra.comments) {
- comment = source.slice(start + offset, index - 1);
- loc.end = {
- line: lineNumber,
- column: index - lineStart - 1
- };
- addComment('Line', comment, start, index - 1, loc);
- }
- if (ch === 13 && source.charCodeAt(index) === 10) {
- ++index;
- }
- ++lineNumber;
- lineStart = index;
- return;
- }
- }
-
- if (extra.comments) {
- comment = source.slice(start + offset, index);
- loc.end = {
- line: lineNumber,
- column: index - lineStart
- };
- addComment('Line', comment, start, index, loc);
- }
- }
-
- function skipMultiLineComment() {
- var start, loc, ch, comment;
-
- if (extra.comments) {
- start = index - 2;
- loc = {
- start: {
- line: lineNumber,
- column: index - lineStart - 2
- }
- };
- }
-
- while (index < length) {
- ch = source.charCodeAt(index);
- if (isLineTerminator(ch)) {
- if (ch === 0x0D && source.charCodeAt(index + 1) === 0x0A) {
- ++index;
- }
- hasLineTerminator = true;
- ++lineNumber;
- ++index;
- lineStart = index;
- } else if (ch === 0x2A) {
- // Block comment ends with '*/'.
- if (source.charCodeAt(index + 1) === 0x2F) {
- ++index;
- ++index;
- if (extra.comments) {
- comment = source.slice(start + 2, index - 2);
- loc.end = {
- line: lineNumber,
- column: index - lineStart
- };
- addComment('Block', comment, start, index, loc);
- }
- return;
- }
- ++index;
- } else {
- ++index;
- }
- }
-
- // Ran off the end of the file - the whole thing is a comment
- if (extra.comments) {
- loc.end = {
- line: lineNumber,
- column: index - lineStart
- };
- comment = source.slice(start + 2, index);
- addComment('Block', comment, start, index, loc);
- }
- tolerateUnexpectedToken();
- }
-
- function skipComment() {
- var ch, start;
- hasLineTerminator = false;
-
- start = (index === 0);
- while (index < length) {
- ch = source.charCodeAt(index);
-
- if (isWhiteSpace(ch)) {
- ++index;
- } else if (isLineTerminator(ch)) {
- hasLineTerminator = true;
- ++index;
- if (ch === 0x0D && source.charCodeAt(index) === 0x0A) {
- ++index;
- }
- ++lineNumber;
- lineStart = index;
- start = true;
- } else if (ch === 0x2F) { // U+002F is '/'
- ch = source.charCodeAt(index + 1);
- if (ch === 0x2F) {
- ++index;
- ++index;
- skipSingleLineComment(2);
- start = true;
- } else if (ch === 0x2A) { // U+002A is '*'
- ++index;
- ++index;
- skipMultiLineComment();
- } else {
- break;
- }
- } else if (start && ch === 0x2D) { // U+002D is '-'
- // U+003E is '>'
- if ((source.charCodeAt(index + 1) === 0x2D) && (source.charCodeAt(index + 2) === 0x3E)) {
- // '-->' is a single-line comment
- index += 3;
- skipSingleLineComment(3);
- } else {
- break;
- }
- } else if (ch === 0x3C) { // U+003C is '<'
- if (source.slice(index + 1, index + 4) === '!--') {
- ++index; // `<`
- ++index; // `!`
- ++index; // `-`
- ++index; // `-`
- skipSingleLineComment(4);
- } else {
- break;
- }
- } else {
- break;
- }
- }
- }
-
- function scanHexEscape(prefix) {
- var i, len, ch, code = 0;
-
- len = (prefix === 'u') ? 4 : 2;
- for (i = 0; i < len; ++i) {
- if (index < length && isHexDigit(source[index])) {
- ch = source[index++];
- code = code * 16 + '0123456789abcdef'.indexOf(ch.toLowerCase());
- } else {
- return '';
- }
- }
- return String.fromCharCode(code);
- }
-
- function scanUnicodeCodePointEscape() {
- var ch, code;
-
- ch = source[index];
- code = 0;
-
- // At least, one hex digit is required.
- if (ch === '}') {
- throwUnexpectedToken();
- }
-
- while (index < length) {
- ch = source[index++];
- if (!isHexDigit(ch)) {
- break;
- }
- code = code * 16 + '0123456789abcdef'.indexOf(ch.toLowerCase());
- }
-
- if (code > 0x10FFFF || ch !== '}') {
- throwUnexpectedToken();
- }
-
- return fromCodePoint(code);
- }
-
- function codePointAt(i) {
- var cp, first, second;
-
- cp = source.charCodeAt(i);
- if (cp >= 0xD800 && cp <= 0xDBFF) {
- second = source.charCodeAt(i + 1);
- if (second >= 0xDC00 && second <= 0xDFFF) {
- first = cp;
- cp = (first - 0xD800) * 0x400 + second - 0xDC00 + 0x10000;
- }
- }
-
- return cp;
- }
-
- function getComplexIdentifier() {
- var cp, ch, id;
-
- cp = codePointAt(index);
- id = fromCodePoint(cp);
- index += id.length;
-
- // '\u' (U+005C, U+0075) denotes an escaped character.
- if (cp === 0x5C) {
- if (source.charCodeAt(index) !== 0x75) {
- throwUnexpectedToken();
- }
- ++index;
- if (source[index] === '{') {
- ++index;
- ch = scanUnicodeCodePointEscape();
- } else {
- ch = scanHexEscape('u');
- cp = ch.charCodeAt(0);
- if (!ch || ch === '\\' || !isIdentifierStart(cp)) {
- throwUnexpectedToken();
- }
- }
- id = ch;
- }
-
- while (index < length) {
- cp = codePointAt(index);
- if (!isIdentifierPart(cp)) {
- break;
- }
- ch = fromCodePoint(cp);
- id += ch;
- index += ch.length;
-
- // '\u' (U+005C, U+0075) denotes an escaped character.
- if (cp === 0x5C) {
- id = id.substr(0, id.length - 1);
- if (source.charCodeAt(index) !== 0x75) {
- throwUnexpectedToken();
- }
- ++index;
- if (source[index] === '{') {
- ++index;
- ch = scanUnicodeCodePointEscape();
- } else {
- ch = scanHexEscape('u');
- cp = ch.charCodeAt(0);
- if (!ch || ch === '\\' || !isIdentifierPart(cp)) {
- throwUnexpectedToken();
- }
- }
- id += ch;
- }
- }
-
- return id;
- }
-
- function getIdentifier() {
- var start, ch;
-
- start = index++;
- while (index < length) {
- ch = source.charCodeAt(index);
- if (ch === 0x5C) {
- // Blackslash (U+005C) marks Unicode escape sequence.
- index = start;
- return getComplexIdentifier();
- } else if (ch >= 0xD800 && ch < 0xDFFF) {
- // Need to handle surrogate pairs.
- index = start;
- return getComplexIdentifier();
- }
- if (isIdentifierPart(ch)) {
- ++index;
- } else {
- break;
- }
- }
-
- return source.slice(start, index);
- }
-
- function scanIdentifier() {
- var start, id, type;
-
- start = index;
-
- // Backslash (U+005C) starts an escaped character.
- id = (source.charCodeAt(index) === 0x5C) ? getComplexIdentifier() : getIdentifier();
-
- // There is no keyword or literal with only one character.
- // Thus, it must be an identifier.
- if (id.length === 1) {
- type = Token.Identifier;
- } else if (isKeyword(id)) {
- type = Token.Keyword;
- } else if (id === 'null') {
- type = Token.NullLiteral;
- } else if (id === 'true' || id === 'false') {
- type = Token.BooleanLiteral;
- } else {
- type = Token.Identifier;
- }
-
- return {
- type: type,
- value: id,
- lineNumber: lineNumber,
- lineStart: lineStart,
- start: start,
- end: index
- };
- }
-
-
- // ECMA-262 11.7 Punctuators
-
- function scanPunctuator() {
- var token, str;
-
- token = {
- type: Token.Punctuator,
- value: '',
- lineNumber: lineNumber,
- lineStart: lineStart,
- start: index,
- end: index
- };
-
- // Check for most common single-character punctuators.
- str = source[index];
- switch (str) {
-
- case '(':
- if (extra.tokenize) {
- extra.openParenToken = extra.tokenValues.length;
- }
- ++index;
- break;
-
- case '{':
- if (extra.tokenize) {
- extra.openCurlyToken = extra.tokenValues.length;
- }
- state.curlyStack.push('{');
- ++index;
- break;
-
- case '.':
- ++index;
- if (source[index] === '.' && source[index + 1] === '.') {
- // Spread operator: ...
- index += 2;
- str = '...';
- }
- break;
-
- case '}':
- ++index;
- state.curlyStack.pop();
- break;
- case ')':
- case ';':
- case ',':
- case '[':
- case ']':
- case ':':
- case '?':
- case '~':
- ++index;
- break;
-
- default:
- // 4-character punctuator.
- str = source.substr(index, 4);
- if (str === '>>>=') {
- index += 4;
- } else {
-
- // 3-character punctuators.
- str = str.substr(0, 3);
- if (str === '===' || str === '!==' || str === '>>>' ||
- str === '<<=' || str === '>>=') {
- index += 3;
- } else {
-
- // 2-character punctuators.
- str = str.substr(0, 2);
- if (str === '&&' || str === '||' || str === '==' || str === '!=' ||
- str === '+=' || str === '-=' || str === '*=' || str === '/=' ||
- str === '++' || str === '--' || str === '<<' || str === '>>' ||
- str === '&=' || str === '|=' || str === '^=' || str === '%=' ||
- str === '<=' || str === '>=' || str === '=>') {
- index += 2;
- } else {
-
- // 1-character punctuators.
- str = source[index];
- if ('<>=!+-*%&|^/'.indexOf(str) >= 0) {
- ++index;
- }
- }
- }
- }
- }
-
- if (index === token.start) {
- throwUnexpectedToken();
- }
-
- token.end = index;
- token.value = str;
- return token;
- }
-
- // ECMA-262 11.8.3 Numeric Literals
-
- function scanHexLiteral(start) {
- var number = '';
-
- while (index < length) {
- if (!isHexDigit(source[index])) {
- break;
- }
- number += source[index++];
- }
-
- if (number.length === 0) {
- throwUnexpectedToken();
- }
-
- if (isIdentifierStart(source.charCodeAt(index))) {
- throwUnexpectedToken();
- }
-
- return {
- type: Token.NumericLiteral,
- value: parseInt('0x' + number, 16),
- lineNumber: lineNumber,
- lineStart: lineStart,
- start: start,
- end: index
- };
- }
-
- function scanBinaryLiteral(start) {
- var ch, number;
-
- number = '';
-
- while (index < length) {
- ch = source[index];
- if (ch !== '0' && ch !== '1') {
- break;
- }
- number += source[index++];
- }
-
- if (number.length === 0) {
- // only 0b or 0B
- throwUnexpectedToken();
- }
-
- if (index < length) {
- ch = source.charCodeAt(index);
- /* istanbul ignore else */
- if (isIdentifierStart(ch) || isDecimalDigit(ch)) {
- throwUnexpectedToken();
- }
- }
-
- return {
- type: Token.NumericLiteral,
- value: parseInt(number, 2),
- lineNumber: lineNumber,
- lineStart: lineStart,
- start: start,
- end: index
- };
- }
-
- function scanOctalLiteral(prefix, start) {
- var number, octal;
-
- if (isOctalDigit(prefix)) {
- octal = true;
- number = '0' + source[index++];
- } else {
- octal = false;
- ++index;
- number = '';
- }
-
- while (index < length) {
- if (!isOctalDigit(source[index])) {
- break;
- }
- number += source[index++];
- }
-
- if (!octal && number.length === 0) {
- // only 0o or 0O
- throwUnexpectedToken();
- }
-
- if (isIdentifierStart(source.charCodeAt(index)) || isDecimalDigit(source.charCodeAt(index))) {
- throwUnexpectedToken();
- }
-
- return {
- type: Token.NumericLiteral,
- value: parseInt(number, 8),
- octal: octal,
- lineNumber: lineNumber,
- lineStart: lineStart,
- start: start,
- end: index
- };
- }
-
- function isImplicitOctalLiteral() {
- var i, ch;
-
- // Implicit octal, unless there is a non-octal digit.
- // (Annex B.1.1 on Numeric Literals)
- for (i = index + 1; i < length; ++i) {
- ch = source[i];
- if (ch === '8' || ch === '9') {
- return false;
- }
- if (!isOctalDigit(ch)) {
- return true;
- }
- }
-
- return true;
- }
-
- function scanNumericLiteral() {
- var number, start, ch;
-
- ch = source[index];
- assert(isDecimalDigit(ch.charCodeAt(0)) || (ch === '.'),
- 'Numeric literal must start with a decimal digit or a decimal point');
-
- start = index;
- number = '';
- if (ch !== '.') {
- number = source[index++];
- ch = source[index];
-
- // Hex number starts with '0x'.
- // Octal number starts with '0'.
- // Octal number in ES6 starts with '0o'.
- // Binary number in ES6 starts with '0b'.
- if (number === '0') {
- if (ch === 'x' || ch === 'X') {
- ++index;
- return scanHexLiteral(start);
- }
- if (ch === 'b' || ch === 'B') {
- ++index;
- return scanBinaryLiteral(start);
- }
- if (ch === 'o' || ch === 'O') {
- return scanOctalLiteral(ch, start);
- }
-
- if (isOctalDigit(ch)) {
- if (isImplicitOctalLiteral()) {
- return scanOctalLiteral(ch, start);
- }
- }
- }
-
- while (isDecimalDigit(source.charCodeAt(index))) {
- number += source[index++];
- }
- ch = source[index];
- }
-
- if (ch === '.') {
- number += source[index++];
- while (isDecimalDigit(source.charCodeAt(index))) {
- number += source[index++];
- }
- ch = source[index];
- }
-
- if (ch === 'e' || ch === 'E') {
- number += source[index++];
-
- ch = source[index];
- if (ch === '+' || ch === '-') {
- number += source[index++];
- }
- if (isDecimalDigit(source.charCodeAt(index))) {
- while (isDecimalDigit(source.charCodeAt(index))) {
- number += source[index++];
- }
- } else {
- throwUnexpectedToken();
- }
- }
-
- if (isIdentifierStart(source.charCodeAt(index))) {
- throwUnexpectedToken();
- }
-
- return {
- type: Token.NumericLiteral,
- value: parseFloat(number),
- lineNumber: lineNumber,
- lineStart: lineStart,
- start: start,
- end: index
- };
- }
-
- // ECMA-262 11.8.4 String Literals
-
- function scanStringLiteral() {
- var str = '', quote, start, ch, unescaped, octToDec, octal = false;
-
- quote = source[index];
- assert((quote === '\'' || quote === '"'),
- 'String literal must starts with a quote');
-
- start = index;
- ++index;
-
- while (index < length) {
- ch = source[index++];
-
- if (ch === quote) {
- quote = '';
- break;
- } else if (ch === '\\') {
- ch = source[index++];
- if (!ch || !isLineTerminator(ch.charCodeAt(0))) {
- switch (ch) {
- case 'u':
- case 'x':
- if (source[index] === '{') {
- ++index;
- str += scanUnicodeCodePointEscape();
- } else {
- unescaped = scanHexEscape(ch);
- if (!unescaped) {
- throw throwUnexpectedToken();
- }
- str += unescaped;
- }
- break;
- case 'n':
- str += '\n';
- break;
- case 'r':
- str += '\r';
- break;
- case 't':
- str += '\t';
- break;
- case 'b':
- str += '\b';
- break;
- case 'f':
- str += '\f';
- break;
- case 'v':
- str += '\x0B';
- break;
- case '8':
- case '9':
- str += ch;
- tolerateUnexpectedToken();
- break;
-
- default:
- if (isOctalDigit(ch)) {
- octToDec = octalToDecimal(ch);
-
- octal = octToDec.octal || octal;
- str += String.fromCharCode(octToDec.code);
- } else {
- str += ch;
- }
- break;
- }
- } else {
- ++lineNumber;
- if (ch === '\r' && source[index] === '\n') {
- ++index;
- }
- lineStart = index;
- }
- } else if (isLineTerminator(ch.charCodeAt(0))) {
- break;
- } else {
- str += ch;
- }
- }
-
- if (quote !== '') {
- index = start;
- throwUnexpectedToken();
- }
-
- return {
- type: Token.StringLiteral,
- value: str,
- octal: octal,
- lineNumber: startLineNumber,
- lineStart: startLineStart,
- start: start,
- end: index
- };
- }
-
- // ECMA-262 11.8.6 Template Literal Lexical Components
-
- function scanTemplate() {
- var cooked = '', ch, start, rawOffset, terminated, head, tail, restore, unescaped;
-
- terminated = false;
- tail = false;
- start = index;
- head = (source[index] === '`');
- rawOffset = 2;
-
- ++index;
-
- while (index < length) {
- ch = source[index++];
- if (ch === '`') {
- rawOffset = 1;
- tail = true;
- terminated = true;
- break;
- } else if (ch === '$') {
- if (source[index] === '{') {
- state.curlyStack.push('${');
- ++index;
- terminated = true;
- break;
- }
- cooked += ch;
- } else if (ch === '\\') {
- ch = source[index++];
- if (!isLineTerminator(ch.charCodeAt(0))) {
- switch (ch) {
- case 'n':
- cooked += '\n';
- break;
- case 'r':
- cooked += '\r';
- break;
- case 't':
- cooked += '\t';
- break;
- case 'u':
- case 'x':
- if (source[index] === '{') {
- ++index;
- cooked += scanUnicodeCodePointEscape();
- } else {
- restore = index;
- unescaped = scanHexEscape(ch);
- if (unescaped) {
- cooked += unescaped;
- } else {
- index = restore;
- cooked += ch;
- }
- }
- break;
- case 'b':
- cooked += '\b';
- break;
- case 'f':
- cooked += '\f';
- break;
- case 'v':
- cooked += '\v';
- break;
-
- default:
- if (ch === '0') {
- if (isDecimalDigit(source.charCodeAt(index))) {
- // Illegal: \01 \02 and so on
- throwError(Messages.TemplateOctalLiteral);
- }
- cooked += '\0';
- } else if (isOctalDigit(ch)) {
- // Illegal: \1 \2
- throwError(Messages.TemplateOctalLiteral);
- } else {
- cooked += ch;
- }
- break;
- }
- } else {
- ++lineNumber;
- if (ch === '\r' && source[index] === '\n') {
- ++index;
- }
- lineStart = index;
- }
- } else if (isLineTerminator(ch.charCodeAt(0))) {
- ++lineNumber;
- if (ch === '\r' && source[index] === '\n') {
- ++index;
- }
- lineStart = index;
- cooked += '\n';
- } else {
- cooked += ch;
- }
- }
-
- if (!terminated) {
- throwUnexpectedToken();
- }
-
- if (!head) {
- state.curlyStack.pop();
- }
-
- return {
- type: Token.Template,
- value: {
- cooked: cooked,
- raw: source.slice(start + 1, index - rawOffset)
- },
- head: head,
- tail: tail,
- lineNumber: lineNumber,
- lineStart: lineStart,
- start: start,
- end: index
- };
- }
-
- // ECMA-262 11.8.5 Regular Expression Literals
-
- function testRegExp(pattern, flags) {
- // The BMP character to use as a replacement for astral symbols when
- // translating an ES6 "u"-flagged pattern to an ES5-compatible
- // approximation.
- // Note: replacing with '\uFFFF' enables false positives in unlikely
- // scenarios. For example, `[\u{1044f}-\u{10440}]` is an invalid
- // pattern that would not be detected by this substitution.
- var astralSubstitute = '\uFFFF',
- tmp = pattern;
-
- if (flags.indexOf('u') >= 0) {
- tmp = tmp
- // Replace every Unicode escape sequence with the equivalent
- // BMP character or a constant ASCII code point in the case of
- // astral symbols. (See the above note on `astralSubstitute`
- // for more information.)
- .replace(/\\u\{([0-9a-fA-F]+)\}|\\u([a-fA-F0-9]{4})/g, function ($0, $1, $2) {
- var codePoint = parseInt($1 || $2, 16);
- if (codePoint > 0x10FFFF) {
- throwUnexpectedToken(null, Messages.InvalidRegExp);
- }
- if (codePoint <= 0xFFFF) {
- return String.fromCharCode(codePoint);
- }
- return astralSubstitute;
- })
- // Replace each paired surrogate with a single ASCII symbol to
- // avoid throwing on regular expressions that are only valid in
- // combination with the "u" flag.
- .replace(
- /[\uD800-\uDBFF][\uDC00-\uDFFF]/g,
- astralSubstitute
- );
- }
-
- // First, detect invalid regular expressions.
- try {
- RegExp(tmp);
- } catch (e) {
- throwUnexpectedToken(null, Messages.InvalidRegExp);
- }
-
- // Return a regular expression object for this pattern-flag pair, or
- // `null` in case the current environment doesn't support the flags it
- // uses.
- try {
- return new RegExp(pattern, flags);
- } catch (exception) {
- /* istanbul ignore next */
- return null;
- }
- }
-
- function scanRegExpBody() {
- var ch, str, classMarker, terminated, body;
-
- ch = source[index];
- assert(ch === '/', 'Regular expression literal must start with a slash');
- str = source[index++];
-
- classMarker = false;
- terminated = false;
- while (index < length) {
- ch = source[index++];
- str += ch;
- if (ch === '\\') {
- ch = source[index++];
- // ECMA-262 7.8.5
- if (isLineTerminator(ch.charCodeAt(0))) {
- throwUnexpectedToken(null, Messages.UnterminatedRegExp);
- }
- str += ch;
- } else if (isLineTerminator(ch.charCodeAt(0))) {
- throwUnexpectedToken(null, Messages.UnterminatedRegExp);
- } else if (classMarker) {
- if (ch === ']') {
- classMarker = false;
- }
- } else {
- if (ch === '/') {
- terminated = true;
- break;
- } else if (ch === '[') {
- classMarker = true;
- }
- }
- }
-
- if (!terminated) {
- throwUnexpectedToken(null, Messages.UnterminatedRegExp);
- }
-
- // Exclude leading and trailing slash.
- body = str.substr(1, str.length - 2);
- return {
- value: body,
- literal: str
- };
- }
-
- function scanRegExpFlags() {
- var ch, str, flags, restore;
-
- str = '';
- flags = '';
- while (index < length) {
- ch = source[index];
- if (!isIdentifierPart(ch.charCodeAt(0))) {
- break;
- }
-
- ++index;
- if (ch === '\\' && index < length) {
- ch = source[index];
- if (ch === 'u') {
- ++index;
- restore = index;
- ch = scanHexEscape('u');
- if (ch) {
- flags += ch;
- for (str += '\\u'; restore < index; ++restore) {
- str += source[restore];
- }
- } else {
- index = restore;
- flags += 'u';
- str += '\\u';
- }
- tolerateUnexpectedToken();
- } else {
- str += '\\';
- tolerateUnexpectedToken();
- }
- } else {
- flags += ch;
- str += ch;
- }
- }
-
- return {
- value: flags,
- literal: str
- };
- }
-
- function scanRegExp() {
- var start, body, flags, value;
- scanning = true;
-
- lookahead = null;
- skipComment();
- start = index;
-
- body = scanRegExpBody();
- flags = scanRegExpFlags();
- value = testRegExp(body.value, flags.value);
- scanning = false;
- if (extra.tokenize) {
- return {
- type: Token.RegularExpression,
- value: value,
- regex: {
- pattern: body.value,
- flags: flags.value
- },
- lineNumber: lineNumber,
- lineStart: lineStart,
- start: start,
- end: index
- };
- }
-
- return {
- literal: body.literal + flags.literal,
- value: value,
- regex: {
- pattern: body.value,
- flags: flags.value
- },
- start: start,
- end: index
- };
- }
-
- function collectRegex() {
- var pos, loc, regex, token;
-
- skipComment();
-
- pos = index;
- loc = {
- start: {
- line: lineNumber,
- column: index - lineStart
- }
- };
-
- regex = scanRegExp();
-
- loc.end = {
- line: lineNumber,
- column: index - lineStart
- };
-
- /* istanbul ignore next */
- if (!extra.tokenize) {
- // Pop the previous token, which is likely '/' or '/='
- if (extra.tokens.length > 0) {
- token = extra.tokens[extra.tokens.length - 1];
- if (token.range[0] === pos && token.type === 'Punctuator') {
- if (token.value === '/' || token.value === '/=') {
- extra.tokens.pop();
- }
- }
- }
-
- extra.tokens.push({
- type: 'RegularExpression',
- value: regex.literal,
- regex: regex.regex,
- range: [pos, index],
- loc: loc
- });
- }
-
- return regex;
- }
-
- function isIdentifierName(token) {
- return token.type === Token.Identifier ||
- token.type === Token.Keyword ||
- token.type === Token.BooleanLiteral ||
- token.type === Token.NullLiteral;
- }
-
- // Using the following algorithm:
- // https://github.com/mozilla/sweet.js/wiki/design
-
- function advanceSlash() {
- var regex, previous, check;
-
- function testKeyword(value) {
- return value && (value.length > 1) && (value[0] >= 'a') && (value[0] <= 'z');
- }
-
- previous = extra.tokenValues[extra.tokenValues.length - 1];
- regex = (previous !== null);
-
- switch (previous) {
- case 'this':
- case ']':
- regex = false;
- break;
-
- case ')':
- check = extra.tokenValues[extra.openParenToken - 1];
- regex = (check === 'if' || check === 'while' || check === 'for' || check === 'with');
- break;
-
- case '}':
- // Dividing a function by anything makes little sense,
- // but we have to check for that.
- regex = false;
- if (testKeyword(extra.tokenValues[extra.openCurlyToken - 3])) {
- // Anonymous function, e.g. function(){} /42
- check = extra.tokenValues[extra.openCurlyToken - 4];
- regex = check ? (FnExprTokens.indexOf(check) < 0) : false;
- } else if (testKeyword(extra.tokenValues[extra.openCurlyToken - 4])) {
- // Named function, e.g. function f(){} /42/
- check = extra.tokenValues[extra.openCurlyToken - 5];
- regex = check ? (FnExprTokens.indexOf(check) < 0) : true;
- }
- }
-
- return regex ? collectRegex() : scanPunctuator();
- }
-
- function advance() {
- var cp, token;
-
- if (index >= length) {
- return {
- type: Token.EOF,
- lineNumber: lineNumber,
- lineStart: lineStart,
- start: index,
- end: index
- };
- }
-
- cp = source.charCodeAt(index);
-
- if (isIdentifierStart(cp)) {
- token = scanIdentifier();
- if (strict && isStrictModeReservedWord(token.value)) {
- token.type = Token.Keyword;
- }
- return token;
- }
-
- // Very common: ( and ) and ;
- if (cp === 0x28 || cp === 0x29 || cp === 0x3B) {
- return scanPunctuator();
- }
-
- // String literal starts with single quote (U+0027) or double quote (U+0022).
- if (cp === 0x27 || cp === 0x22) {
- return scanStringLiteral();
- }
-
- // Dot (.) U+002E can also start a floating-point number, hence the need
- // to check the next character.
- if (cp === 0x2E) {
- if (isDecimalDigit(source.charCodeAt(index + 1))) {
- return scanNumericLiteral();
- }
- return scanPunctuator();
- }
-
- if (isDecimalDigit(cp)) {
- return scanNumericLiteral();
- }
-
- // Slash (/) U+002F can also start a regex.
- if (extra.tokenize && cp === 0x2F) {
- return advanceSlash();
- }
-
- // Template literals start with ` (U+0060) for template head
- // or } (U+007D) for template middle or template tail.
- if (cp === 0x60 || (cp === 0x7D && state.curlyStack[state.curlyStack.length - 1] === '${')) {
- return scanTemplate();
- }
-
- // Possible identifier start in a surrogate pair.
- if (cp >= 0xD800 && cp < 0xDFFF) {
- cp = codePointAt(index);
- if (isIdentifierStart(cp)) {
- return scanIdentifier();
- }
- }
-
- return scanPunctuator();
- }
-
- function collectToken() {
- var loc, token, value, entry;
-
- loc = {
- start: {
- line: lineNumber,
- column: index - lineStart
- }
- };
-
- token = advance();
- loc.end = {
- line: lineNumber,
- column: index - lineStart
- };
-
- if (token.type !== Token.EOF) {
- value = source.slice(token.start, token.end);
- entry = {
- type: TokenName[token.type],
- value: value,
- range: [token.start, token.end],
- loc: loc
- };
- if (token.regex) {
- entry.regex = {
- pattern: token.regex.pattern,
- flags: token.regex.flags
- };
- }
- if (extra.tokenValues) {
- extra.tokenValues.push((entry.type === 'Punctuator' || entry.type === 'Keyword') ? entry.value : null);
- }
- if (extra.tokenize) {
- if (!extra.range) {
- delete entry.range;
- }
- if (!extra.loc) {
- delete entry.loc;
- }
- if (extra.delegate) {
- entry = extra.delegate(entry);
- }
- }
- extra.tokens.push(entry);
- }
-
- return token;
- }
-
- function lex() {
- var token;
- scanning = true;
-
- lastIndex = index;
- lastLineNumber = lineNumber;
- lastLineStart = lineStart;
-
- skipComment();
-
- token = lookahead;
-
- startIndex = index;
- startLineNumber = lineNumber;
- startLineStart = lineStart;
-
- lookahead = (typeof extra.tokens !== 'undefined') ? collectToken() : advance();
- scanning = false;
- return token;
- }
-
- function peek() {
- scanning = true;
-
- skipComment();
-
- lastIndex = index;
- lastLineNumber = lineNumber;
- lastLineStart = lineStart;
-
- startIndex = index;
- startLineNumber = lineNumber;
- startLineStart = lineStart;
-
- lookahead = (typeof extra.tokens !== 'undefined') ? collectToken() : advance();
- scanning = false;
- }
-
- function Position() {
- this.line = startLineNumber;
- this.column = startIndex - startLineStart;
- }
-
- function SourceLocation() {
- this.start = new Position();
- this.end = null;
- }
-
- function WrappingSourceLocation(startToken) {
- this.start = {
- line: startToken.lineNumber,
- column: startToken.start - startToken.lineStart
- };
- this.end = null;
- }
-
- function Node() {
- if (extra.range) {
- this.range = [startIndex, 0];
- }
- if (extra.loc) {
- this.loc = new SourceLocation();
- }
- }
-
- function WrappingNode(startToken) {
- if (extra.range) {
- this.range = [startToken.start, 0];
- }
- if (extra.loc) {
- this.loc = new WrappingSourceLocation(startToken);
- }
- }
-
- WrappingNode.prototype = Node.prototype = {
-
- processComment: function () {
- var lastChild,
- innerComments,
- leadingComments,
- trailingComments,
- bottomRight = extra.bottomRightStack,
- i,
- comment,
- last = bottomRight[bottomRight.length - 1];
-
- if (this.type === Syntax.Program) {
- if (this.body.length > 0) {
- return;
- }
- }
- /**
- * patch innnerComments for properties empty block
- * `function a() {/** comments **\/}`
- */
-
- if (this.type === Syntax.BlockStatement && this.body.length === 0) {
- innerComments = [];
- for (i = extra.leadingComments.length - 1; i >= 0; --i) {
- comment = extra.leadingComments[i];
- if (this.range[1] >= comment.range[1]) {
- innerComments.unshift(comment);
- extra.leadingComments.splice(i, 1);
- extra.trailingComments.splice(i, 1);
- }
- }
- if (innerComments.length) {
- this.innerComments = innerComments;
- //bottomRight.push(this);
- return;
- }
- }
-
- if (extra.trailingComments.length > 0) {
- trailingComments = [];
- for (i = extra.trailingComments.length - 1; i >= 0; --i) {
- comment = extra.trailingComments[i];
- if (comment.range[0] >= this.range[1]) {
- trailingComments.unshift(comment);
- extra.trailingComments.splice(i, 1);
- }
- }
- extra.trailingComments = [];
- } else {
- if (last && last.trailingComments && last.trailingComments[0].range[0] >= this.range[1]) {
- trailingComments = last.trailingComments;
- delete last.trailingComments;
- }
- }
-
- // Eating the stack.
- while (last && last.range[0] >= this.range[0]) {
- lastChild = bottomRight.pop();
- last = bottomRight[bottomRight.length - 1];
- }
-
- if (lastChild) {
- if (lastChild.leadingComments) {
- leadingComments = [];
- for (i = lastChild.leadingComments.length - 1; i >= 0; --i) {
- comment = lastChild.leadingComments[i];
- if (comment.range[1] <= this.range[0]) {
- leadingComments.unshift(comment);
- lastChild.leadingComments.splice(i, 1);
- }
- }
-
- if (!lastChild.leadingComments.length) {
- lastChild.leadingComments = undefined;
- }
- }
- } else if (extra.leadingComments.length > 0) {
- leadingComments = [];
- for (i = extra.leadingComments.length - 1; i >= 0; --i) {
- comment = extra.leadingComments[i];
- if (comment.range[1] <= this.range[0]) {
- leadingComments.unshift(comment);
- extra.leadingComments.splice(i, 1);
- }
- }
- }
-
-
- if (leadingComments && leadingComments.length > 0) {
- this.leadingComments = leadingComments;
- }
- if (trailingComments && trailingComments.length > 0) {
- this.trailingComments = trailingComments;
- }
-
- bottomRight.push(this);
- },
-
- finish: function () {
- if (extra.range) {
- this.range[1] = lastIndex;
- }
- if (extra.loc) {
- this.loc.end = {
- line: lastLineNumber,
- column: lastIndex - lastLineStart
- };
- if (extra.source) {
- this.loc.source = extra.source;
- }
- }
-
- if (extra.attachComment) {
- this.processComment();
- }
- },
-
- finishArrayExpression: function (elements) {
- this.type = Syntax.ArrayExpression;
- this.elements = elements;
- this.finish();
- return this;
- },
-
- finishArrayPattern: function (elements) {
- this.type = Syntax.ArrayPattern;
- this.elements = elements;
- this.finish();
- return this;
- },
-
- finishArrowFunctionExpression: function (params, defaults, body, expression) {
- this.type = Syntax.ArrowFunctionExpression;
- this.id = null;
- this.params = params;
- this.defaults = defaults;
- this.body = body;
- this.generator = false;
- this.expression = expression;
- this.finish();
- return this;
- },
-
- finishAssignmentExpression: function (operator, left, right) {
- this.type = Syntax.AssignmentExpression;
- this.operator = operator;
- this.left = left;
- this.right = right;
- this.finish();
- return this;
- },
-
- finishAssignmentPattern: function (left, right) {
- this.type = Syntax.AssignmentPattern;
- this.left = left;
- this.right = right;
- this.finish();
- return this;
- },
-
- finishBinaryExpression: function (operator, left, right) {
- this.type = (operator === '||' || operator === '&&') ? Syntax.LogicalExpression : Syntax.BinaryExpression;
- this.operator = operator;
- this.left = left;
- this.right = right;
- this.finish();
- return this;
- },
-
- finishBlockStatement: function (body) {
- this.type = Syntax.BlockStatement;
- this.body = body;
- this.finish();
- return this;
- },
-
- finishBreakStatement: function (label) {
- this.type = Syntax.BreakStatement;
- this.label = label;
- this.finish();
- return this;
- },
-
- finishCallExpression: function (callee, args) {
- this.type = Syntax.CallExpression;
- this.callee = callee;
- this.arguments = args;
- this.finish();
- return this;
- },
-
- finishCatchClause: function (param, body) {
- this.type = Syntax.CatchClause;
- this.param = param;
- this.body = body;
- this.finish();
- return this;
- },
-
- finishClassBody: function (body) {
- this.type = Syntax.ClassBody;
- this.body = body;
- this.finish();
- return this;
- },
-
- finishClassDeclaration: function (id, superClass, body) {
- this.type = Syntax.ClassDeclaration;
- this.id = id;
- this.superClass = superClass;
- this.body = body;
- this.finish();
- return this;
- },
-
- finishClassExpression: function (id, superClass, body) {
- this.type = Syntax.ClassExpression;
- this.id = id;
- this.superClass = superClass;
- this.body = body;
- this.finish();
- return this;
- },
-
- finishConditionalExpression: function (test, consequent, alternate) {
- this.type = Syntax.ConditionalExpression;
- this.test = test;
- this.consequent = consequent;
- this.alternate = alternate;
- this.finish();
- return this;
- },
-
- finishContinueStatement: function (label) {
- this.type = Syntax.ContinueStatement;
- this.label = label;
- this.finish();
- return this;
- },
-
- finishDebuggerStatement: function () {
- this.type = Syntax.DebuggerStatement;
- this.finish();
- return this;
- },
-
- finishDoWhileStatement: function (body, test) {
- this.type = Syntax.DoWhileStatement;
- this.body = body;
- this.test = test;
- this.finish();
- return this;
- },
-
- finishEmptyStatement: function () {
- this.type = Syntax.EmptyStatement;
- this.finish();
- return this;
- },
-
- finishExpressionStatement: function (expression) {
- this.type = Syntax.ExpressionStatement;
- this.expression = expression;
- this.finish();
- return this;
- },
-
- finishForStatement: function (init, test, update, body) {
- this.type = Syntax.ForStatement;
- this.init = init;
- this.test = test;
- this.update = update;
- this.body = body;
- this.finish();
- return this;
- },
-
- finishForOfStatement: function (left, right, body) {
- this.type = Syntax.ForOfStatement;
- this.left = left;
- this.right = right;
- this.body = body;
- this.finish();
- return this;
- },
-
- finishForInStatement: function (left, right, body) {
- this.type = Syntax.ForInStatement;
- this.left = left;
- this.right = right;
- this.body = body;
- this.each = false;
- this.finish();
- return this;
- },
-
- finishFunctionDeclaration: function (id, params, defaults, body, generator) {
- this.type = Syntax.FunctionDeclaration;
- this.id = id;
- this.params = params;
- this.defaults = defaults;
- this.body = body;
- this.generator = generator;
- this.expression = false;
- this.finish();
- return this;
- },
-
- finishFunctionExpression: function (id, params, defaults, body, generator) {
- this.type = Syntax.FunctionExpression;
- this.id = id;
- this.params = params;
- this.defaults = defaults;
- this.body = body;
- this.generator = generator;
- this.expression = false;
- this.finish();
- return this;
- },
-
- finishIdentifier: function (name) {
- this.type = Syntax.Identifier;
- this.name = name;
- this.finish();
- return this;
- },
-
- finishIfStatement: function (test, consequent, alternate) {
- this.type = Syntax.IfStatement;
- this.test = test;
- this.consequent = consequent;
- this.alternate = alternate;
- this.finish();
- return this;
- },
-
- finishLabeledStatement: function (label, body) {
- this.type = Syntax.LabeledStatement;
- this.label = label;
- this.body = body;
- this.finish();
- return this;
- },
-
- finishLiteral: function (token) {
- this.type = Syntax.Literal;
- this.value = token.value;
- this.raw = source.slice(token.start, token.end);
- if (token.regex) {
- this.regex = token.regex;
- }
- this.finish();
- return this;
- },
-
- finishMemberExpression: function (accessor, object, property) {
- this.type = Syntax.MemberExpression;
- this.computed = accessor === '[';
- this.object = object;
- this.property = property;
- this.finish();
- return this;
- },
-
- finishMetaProperty: function (meta, property) {
- this.type = Syntax.MetaProperty;
- this.meta = meta;
- this.property = property;
- this.finish();
- return this;
- },
-
- finishNewExpression: function (callee, args) {
- this.type = Syntax.NewExpression;
- this.callee = callee;
- this.arguments = args;
- this.finish();
- return this;
- },
-
- finishObjectExpression: function (properties) {
- this.type = Syntax.ObjectExpression;
- this.properties = properties;
- this.finish();
- return this;
- },
-
- finishObjectPattern: function (properties) {
- this.type = Syntax.ObjectPattern;
- this.properties = properties;
- this.finish();
- return this;
- },
-
- finishPostfixExpression: function (operator, argument) {
- this.type = Syntax.UpdateExpression;
- this.operator = operator;
- this.argument = argument;
- this.prefix = false;
- this.finish();
- return this;
- },
-
- finishProgram: function (body, sourceType) {
- this.type = Syntax.Program;
- this.body = body;
- this.sourceType = sourceType;
- this.finish();
- return this;
- },
-
- finishProperty: function (kind, key, computed, value, method, shorthand) {
- this.type = Syntax.Property;
- this.key = key;
- this.computed = computed;
- this.value = value;
- this.kind = kind;
- this.method = method;
- this.shorthand = shorthand;
- this.finish();
- return this;
- },
-
- finishRestElement: function (argument) {
- this.type = Syntax.RestElement;
- this.argument = argument;
- this.finish();
- return this;
- },
-
- finishReturnStatement: function (argument) {
- this.type = Syntax.ReturnStatement;
- this.argument = argument;
- this.finish();
- return this;
- },
-
- finishSequenceExpression: function (expressions) {
- this.type = Syntax.SequenceExpression;
- this.expressions = expressions;
- this.finish();
- return this;
- },
-
- finishSpreadElement: function (argument) {
- this.type = Syntax.SpreadElement;
- this.argument = argument;
- this.finish();
- return this;
- },
-
- finishSwitchCase: function (test, consequent) {
- this.type = Syntax.SwitchCase;
- this.test = test;
- this.consequent = consequent;
- this.finish();
- return this;
- },
-
- finishSuper: function () {
- this.type = Syntax.Super;
- this.finish();
- return this;
- },
-
- finishSwitchStatement: function (discriminant, cases) {
- this.type = Syntax.SwitchStatement;
- this.discriminant = discriminant;
- this.cases = cases;
- this.finish();
- return this;
- },
-
- finishTaggedTemplateExpression: function (tag, quasi) {
- this.type = Syntax.TaggedTemplateExpression;
- this.tag = tag;
- this.quasi = quasi;
- this.finish();
- return this;
- },
-
- finishTemplateElement: function (value, tail) {
- this.type = Syntax.TemplateElement;
- this.value = value;
- this.tail = tail;
- this.finish();
- return this;
- },
-
- finishTemplateLiteral: function (quasis, expressions) {
- this.type = Syntax.TemplateLiteral;
- this.quasis = quasis;
- this.expressions = expressions;
- this.finish();
- return this;
- },
-
- finishThisExpression: function () {
- this.type = Syntax.ThisExpression;
- this.finish();
- return this;
- },
-
- finishThrowStatement: function (argument) {
- this.type = Syntax.ThrowStatement;
- this.argument = argument;
- this.finish();
- return this;
- },
-
- finishTryStatement: function (block, handler, finalizer) {
- this.type = Syntax.TryStatement;
- this.block = block;
- this.guardedHandlers = [];
- this.handlers = handler ? [handler] : [];
- this.handler = handler;
- this.finalizer = finalizer;
- this.finish();
- return this;
- },
-
- finishUnaryExpression: function (operator, argument) {
- this.type = (operator === '++' || operator === '--') ? Syntax.UpdateExpression : Syntax.UnaryExpression;
- this.operator = operator;
- this.argument = argument;
- this.prefix = true;
- this.finish();
- return this;
- },
-
- finishVariableDeclaration: function (declarations) {
- this.type = Syntax.VariableDeclaration;
- this.declarations = declarations;
- this.kind = 'var';
- this.finish();
- return this;
- },
-
- finishLexicalDeclaration: function (declarations, kind) {
- this.type = Syntax.VariableDeclaration;
- this.declarations = declarations;
- this.kind = kind;
- this.finish();
- return this;
- },
-
- finishVariableDeclarator: function (id, init) {
- this.type = Syntax.VariableDeclarator;
- this.id = id;
- this.init = init;
- this.finish();
- return this;
- },
-
- finishWhileStatement: function (test, body) {
- this.type = Syntax.WhileStatement;
- this.test = test;
- this.body = body;
- this.finish();
- return this;
- },
-
- finishWithStatement: function (object, body) {
- this.type = Syntax.WithStatement;
- this.object = object;
- this.body = body;
- this.finish();
- return this;
- },
-
- finishExportSpecifier: function (local, exported) {
- this.type = Syntax.ExportSpecifier;
- this.exported = exported || local;
- this.local = local;
- this.finish();
- return this;
- },
-
- finishImportDefaultSpecifier: function (local) {
- this.type = Syntax.ImportDefaultSpecifier;
- this.local = local;
- this.finish();
- return this;
- },
-
- finishImportNamespaceSpecifier: function (local) {
- this.type = Syntax.ImportNamespaceSpecifier;
- this.local = local;
- this.finish();
- return this;
- },
-
- finishExportNamedDeclaration: function (declaration, specifiers, src) {
- this.type = Syntax.ExportNamedDeclaration;
- this.declaration = declaration;
- this.specifiers = specifiers;
- this.source = src;
- this.finish();
- return this;
- },
-
- finishExportDefaultDeclaration: function (declaration) {
- this.type = Syntax.ExportDefaultDeclaration;
- this.declaration = declaration;
- this.finish();
- return this;
- },
-
- finishExportAllDeclaration: function (src) {
- this.type = Syntax.ExportAllDeclaration;
- this.source = src;
- this.finish();
- return this;
- },
-
- finishImportSpecifier: function (local, imported) {
- this.type = Syntax.ImportSpecifier;
- this.local = local || imported;
- this.imported = imported;
- this.finish();
- return this;
- },
-
- finishImportDeclaration: function (specifiers, src) {
- this.type = Syntax.ImportDeclaration;
- this.specifiers = specifiers;
- this.source = src;
- this.finish();
- return this;
- },
-
- finishYieldExpression: function (argument, delegate) {
- this.type = Syntax.YieldExpression;
- this.argument = argument;
- this.delegate = delegate;
- this.finish();
- return this;
- }
- };
-
-
- function recordError(error) {
- var e, existing;
-
- for (e = 0; e < extra.errors.length; e++) {
- existing = extra.errors[e];
- // Prevent duplicated error.
- /* istanbul ignore next */
- if (existing.index === error.index && existing.message === error.message) {
- return;
- }
- }
-
- extra.errors.push(error);
- }
-
- function constructError(msg, column) {
- var error = new Error(msg);
- try {
- throw error;
- } catch (base) {
- /* istanbul ignore else */
- if (Object.create && Object.defineProperty) {
- error = Object.create(base);
- Object.defineProperty(error, 'column', { value: column });
- }
- } finally {
- return error;
- }
- }
-
- function createError(line, pos, description) {
- var msg, column, error;
-
- msg = 'Line ' + line + ': ' + description;
- column = pos - (scanning ? lineStart : lastLineStart) + 1;
- error = constructError(msg, column);
- error.lineNumber = line;
- error.description = description;
- error.index = pos;
- return error;
- }
-
- // Throw an exception
-
- function throwError(messageFormat) {
- var args, msg;
-
- args = Array.prototype.slice.call(arguments, 1);
- msg = messageFormat.replace(/%(\d)/g,
- function (whole, idx) {
- assert(idx < args.length, 'Message reference must be in range');
- return args[idx];
- }
- );
-
- throw createError(lastLineNumber, lastIndex, msg);
- }
-
- function tolerateError(messageFormat) {
- var args, msg, error;
-
- args = Array.prototype.slice.call(arguments, 1);
- /* istanbul ignore next */
- msg = messageFormat.replace(/%(\d)/g,
- function (whole, idx) {
- assert(idx < args.length, 'Message reference must be in range');
- return args[idx];
- }
- );
-
- error = createError(lineNumber, lastIndex, msg);
- if (extra.errors) {
- recordError(error);
- } else {
- throw error;
- }
- }
-
- // Throw an exception because of the token.
-
- function unexpectedTokenError(token, message) {
- var value, msg = message || Messages.UnexpectedToken;
-
- if (token) {
- if (!message) {
- msg = (token.type === Token.EOF) ? Messages.UnexpectedEOS :
- (token.type === Token.Identifier) ? Messages.UnexpectedIdentifier :
- (token.type === Token.NumericLiteral) ? Messages.UnexpectedNumber :
- (token.type === Token.StringLiteral) ? Messages.UnexpectedString :
- (token.type === Token.Template) ? Messages.UnexpectedTemplate :
- Messages.UnexpectedToken;
-
- if (token.type === Token.Keyword) {
- if (isFutureReservedWord(token.value)) {
- msg = Messages.UnexpectedReserved;
- } else if (strict && isStrictModeReservedWord(token.value)) {
- msg = Messages.StrictReservedWord;
- }
- }
- }
-
- value = (token.type === Token.Template) ? token.value.raw : token.value;
- } else {
- value = 'ILLEGAL';
- }
-
- msg = msg.replace('%0', value);
-
- return (token && typeof token.lineNumber === 'number') ?
- createError(token.lineNumber, token.start, msg) :
- createError(scanning ? lineNumber : lastLineNumber, scanning ? index : lastIndex, msg);
- }
-
- function throwUnexpectedToken(token, message) {
- throw unexpectedTokenError(token, message);
- }
-
- function tolerateUnexpectedToken(token, message) {
- var error = unexpectedTokenError(token, message);
- if (extra.errors) {
- recordError(error);
- } else {
- throw error;
- }
- }
-
- // Expect the next token to match the specified punctuator.
- // If not, an exception will be thrown.
-
- function expect(value) {
- var token = lex();
- if (token.type !== Token.Punctuator || token.value !== value) {
- throwUnexpectedToken(token);
- }
- }
-
- /**
- * @name expectCommaSeparator
- * @description Quietly expect a comma when in tolerant mode, otherwise delegates
- * to <code>expect(value)</code>
- * @since 2.0
- */
- function expectCommaSeparator() {
- var token;
-
- if (extra.errors) {
- token = lookahead;
- if (token.type === Token.Punctuator && token.value === ',') {
- lex();
- } else if (token.type === Token.Punctuator && token.value === ';') {
- lex();
- tolerateUnexpectedToken(token);
- } else {
- tolerateUnexpectedToken(token, Messages.UnexpectedToken);
- }
- } else {
- expect(',');
- }
- }
-
- // Expect the next token to match the specified keyword.
- // If not, an exception will be thrown.
-
- function expectKeyword(keyword) {
- var token = lex();
- if (token.type !== Token.Keyword || token.value !== keyword) {
- throwUnexpectedToken(token);
- }
- }
-
- // Return true if the next token matches the specified punctuator.
-
- function match(value) {
- return lookahead.type === Token.Punctuator && lookahead.value === value;
- }
-
- // Return true if the next token matches the specified keyword
-
- function matchKeyword(keyword) {
- return lookahead.type === Token.Keyword && lookahead.value === keyword;
- }
-
- // Return true if the next token matches the specified contextual keyword
- // (where an identifier is sometimes a keyword depending on the context)
-
- function matchContextualKeyword(keyword) {
- return lookahead.type === Token.Identifier && lookahead.value === keyword;
- }
-
- // Return true if the next token is an assignment operator
-
- function matchAssign() {
- var op;
-
- if (lookahead.type !== Token.Punctuator) {
- return false;
- }
- op = lookahead.value;
- return op === '=' ||
- op === '*=' ||
- op === '/=' ||
- op === '%=' ||
- op === '+=' ||
- op === '-=' ||
- op === '<<=' ||
- op === '>>=' ||
- op === '>>>=' ||
- op === '&=' ||
- op === '^=' ||
- op === '|=';
- }
-
- function consumeSemicolon() {
- // Catch the very common case first: immediately a semicolon (U+003B).
- if (source.charCodeAt(startIndex) === 0x3B || match(';')) {
- lex();
- return;
- }
-
- if (hasLineTerminator) {
- return;
- }
-
- // FIXME(ikarienator): this is seemingly an issue in the previous location info convention.
- lastIndex = startIndex;
- lastLineNumber = startLineNumber;
- lastLineStart = startLineStart;
-
- if (lookahead.type !== Token.EOF && !match('}')) {
- throwUnexpectedToken(lookahead);
- }
- }
-
- // Cover grammar support.
- //
- // When an assignment expression position starts with an left parenthesis, the determination of the type
- // of the syntax is to be deferred arbitrarily long until the end of the parentheses pair (plus a lookahead)
- // or the first comma. This situation also defers the determination of all the expressions nested in the pair.
- //
- // There are three productions that can be parsed in a parentheses pair that needs to be determined
- // after the outermost pair is closed. They are:
- //
- // 1. AssignmentExpression
- // 2. BindingElements
- // 3. AssignmentTargets
- //
- // In order to avoid exponential backtracking, we use two flags to denote if the production can be
- // binding element or assignment target.
- //
- // The three productions have the relationship:
- //
- // BindingElements ⊆ AssignmentTargets ⊆ AssignmentExpression
- //
- // with a single exception that CoverInitializedName when used directly in an Expression, generates
- // an early error. Therefore, we need the third state, firstCoverInitializedNameError, to track the
- // first usage of CoverInitializedName and report it when we reached the end of the parentheses pair.
- //
- // isolateCoverGrammar function runs the given parser function with a new cover grammar context, and it does not
- // effect the current flags. This means the production the parser parses is only used as an expression. Therefore
- // the CoverInitializedName check is conducted.
- //
- // inheritCoverGrammar function runs the given parse function with a new cover grammar context, and it propagates
- // the flags outside of the parser. This means the production the parser parses is used as a part of a potential
- // pattern. The CoverInitializedName check is deferred.
- function isolateCoverGrammar(parser) {
- var oldIsBindingElement = isBindingElement,
- oldIsAssignmentTarget = isAssignmentTarget,
- oldFirstCoverInitializedNameError = firstCoverInitializedNameError,
- result;
- isBindingElement = true;
- isAssignmentTarget = true;
- firstCoverInitializedNameError = null;
- result = parser();
- if (firstCoverInitializedNameError !== null) {
- throwUnexpectedToken(firstCoverInitializedNameError);
- }
- isBindingElement = oldIsBindingElement;
- isAssignmentTarget = oldIsAssignmentTarget;
- firstCoverInitializedNameError = oldFirstCoverInitializedNameError;
- return result;
- }
-
- function inheritCoverGrammar(parser) {
- var oldIsBindingElement = isBindingElement,
- oldIsAssignmentTarget = isAssignmentTarget,
- oldFirstCoverInitializedNameError = firstCoverInitializedNameError,
- result;
- isBindingElement = true;
- isAssignmentTarget = true;
- firstCoverInitializedNameError = null;
- result = parser();
- isBindingElement = isBindingElement && oldIsBindingElement;
- isAssignmentTarget = isAssignmentTarget && oldIsAssignmentTarget;
- firstCoverInitializedNameError = oldFirstCoverInitializedNameError || firstCoverInitializedNameError;
- return result;
- }
-
- // ECMA-262 13.3.3 Destructuring Binding Patterns
-
- function parseArrayPattern(params, kind) {
- var node = new Node(), elements = [], rest, restNode;
- expect('[');
-
- while (!match(']')) {
- if (match(',')) {
- lex();
- elements.push(null);
- } else {
- if (match('...')) {
- restNode = new Node();
- lex();
- params.push(lookahead);
- rest = parseVariableIdentifier(kind);
- elements.push(restNode.finishRestElement(rest));
- break;
- } else {
- elements.push(parsePatternWithDefault(params, kind));
- }
- if (!match(']')) {
- expect(',');
- }
- }
-
- }
-
- expect(']');
-
- return node.finishArrayPattern(elements);
- }
-
- function parsePropertyPattern(params, kind) {
- var node = new Node(), key, keyToken, computed = match('['), init;
- if (lookahead.type === Token.Identifier) {
- keyToken = lookahead;
- key = parseVariableIdentifier();
- if (match('=')) {
- params.push(keyToken);
- lex();
- init = parseAssignmentExpression();
-
- return node.finishProperty(
- 'init', key, false,
- new WrappingNode(keyToken).finishAssignmentPattern(key, init), false, true);
- } else if (!match(':')) {
- params.push(keyToken);
- return node.finishProperty('init', key, false, key, false, true);
- }
- } else {
- key = parseObjectPropertyKey();
- }
- expect(':');
- init = parsePatternWithDefault(params, kind);
- return node.finishProperty('init', key, computed, init, false, false);
- }
-
- function parseObjectPattern(params, kind) {
- var node = new Node(), properties = [];
-
- expect('{');
-
- while (!match('}')) {
- properties.push(parsePropertyPattern(params, kind));
- if (!match('}')) {
- expect(',');
- }
- }
-
- lex();
-
- return node.finishObjectPattern(properties);
- }
-
- function parsePattern(params, kind) {
- if (match('[')) {
- return parseArrayPattern(params, kind);
- } else if (match('{')) {
- return parseObjectPattern(params, kind);
- } else if (matchKeyword('let')) {
- if (kind === 'const' || kind === 'let') {
- tolerateUnexpectedToken(lookahead, Messages.UnexpectedToken);
- }
- }
-
- params.push(lookahead);
- return parseVariableIdentifier(kind);
- }
-
- function parsePatternWithDefault(params, kind) {
- var startToken = lookahead, pattern, previousAllowYield, right;
- pattern = parsePattern(params, kind);
- if (match('=')) {
- lex();
- previousAllowYield = state.allowYield;
- state.allowYield = true;
- right = isolateCoverGrammar(parseAssignmentExpression);
- state.allowYield = previousAllowYield;
- pattern = new WrappingNode(startToken).finishAssignmentPattern(pattern, right);
- }
- return pattern;
- }
-
- // ECMA-262 12.2.5 Array Initializer
-
- function parseArrayInitializer() {
- var elements = [], node = new Node(), restSpread;
-
- expect('[');
-
- while (!match(']')) {
- if (match(',')) {
- lex();
- elements.push(null);
- } else if (match('...')) {
- restSpread = new Node();
- lex();
- restSpread.finishSpreadElement(inheritCoverGrammar(parseAssignmentExpression));
-
- if (!match(']')) {
- isAssignmentTarget = isBindingElement = false;
- expect(',');
- }
- elements.push(restSpread);
- } else {
- elements.push(inheritCoverGrammar(parseAssignmentExpression));
-
- if (!match(']')) {
- expect(',');
- }
- }
- }
-
- lex();
-
- return node.finishArrayExpression(elements);
- }
-
- // ECMA-262 12.2.6 Object Initializer
-
- function parsePropertyFunction(node, paramInfo, isGenerator) {
- var previousStrict, body;
-
- isAssignmentTarget = isBindingElement = false;
-
- previousStrict = strict;
- body = isolateCoverGrammar(parseFunctionSourceElements);
-
- if (strict && paramInfo.firstRestricted) {
- tolerateUnexpectedToken(paramInfo.firstRestricted, paramInfo.message);
- }
- if (strict && paramInfo.stricted) {
- tolerateUnexpectedToken(paramInfo.stricted, paramInfo.message);
- }
-
- strict = previousStrict;
- return node.finishFunctionExpression(null, paramInfo.params, paramInfo.defaults, body, isGenerator);
- }
-
- function parsePropertyMethodFunction() {
- var params, method, node = new Node(),
- previousAllowYield = state.allowYield;
-
- state.allowYield = false;
- params = parseParams();
- state.allowYield = previousAllowYield;
-
- state.allowYield = false;
- method = parsePropertyFunction(node, params, false);
- state.allowYield = previousAllowYield;
-
- return method;
- }
-
- function parseObjectPropertyKey() {
- var token, node = new Node(), expr;
-
- token = lex();
-
- // Note: This function is called only from parseObjectProperty(), where
- // EOF and Punctuator tokens are already filtered out.
-
- switch (token.type) {
- case Token.StringLiteral:
- case Token.NumericLiteral:
- if (strict && token.octal) {
- tolerateUnexpectedToken(token, Messages.StrictOctalLiteral);
- }
- return node.finishLiteral(token);
- case Token.Identifier:
- case Token.BooleanLiteral:
- case Token.NullLiteral:
- case Token.Keyword:
- return node.finishIdentifier(token.value);
- case Token.Punctuator:
- if (token.value === '[') {
- expr = isolateCoverGrammar(parseAssignmentExpression);
- expect(']');
- return expr;
- }
- break;
- }
- throwUnexpectedToken(token);
- }
-
- function lookaheadPropertyName() {
- switch (lookahead.type) {
- case Token.Identifier:
- case Token.StringLiteral:
- case Token.BooleanLiteral:
- case Token.NullLiteral:
- case Token.NumericLiteral:
- case Token.Keyword:
- return true;
- case Token.Punctuator:
- return lookahead.value === '[';
- }
- return false;
- }
-
- // This function is to try to parse a MethodDefinition as defined in 14.3. But in the case of object literals,
- // it might be called at a position where there is in fact a short hand identifier pattern or a data property.
- // This can only be determined after we consumed up to the left parentheses.
- //
- // In order to avoid back tracking, it returns `null` if the position is not a MethodDefinition and the caller
- // is responsible to visit other options.
- function tryParseMethodDefinition(token, key, computed, node) {
- var value, options, methodNode, params,
- previousAllowYield = state.allowYield;
-
- if (token.type === Token.Identifier) {
- // check for `get` and `set`;
-
- if (token.value === 'get' && lookaheadPropertyName()) {
- computed = match('[');
- key = parseObjectPropertyKey();
- methodNode = new Node();
- expect('(');
- expect(')');
-
- state.allowYield = false;
- value = parsePropertyFunction(methodNode, {
- params: [],
- defaults: [],
- stricted: null,
- firstRestricted: null,
- message: null
- }, false);
- state.allowYield = previousAllowYield;
-
- return node.finishProperty('get', key, computed, value, false, false);
- } else if (token.value === 'set' && lookaheadPropertyName()) {
- computed = match('[');
- key = parseObjectPropertyKey();
- methodNode = new Node();
- expect('(');
-
- options = {
- params: [],
- defaultCount: 0,
- defaults: [],
- firstRestricted: null,
- paramSet: {}
- };
- if (match(')')) {
- tolerateUnexpectedToken(lookahead);
- } else {
- state.allowYield = false;
- parseParam(options);
- state.allowYield = previousAllowYield;
- if (options.defaultCount === 0) {
- options.defaults = [];
- }
- }
- expect(')');
-
- state.allowYield = false;
- value = parsePropertyFunction(methodNode, options, false);
- state.allowYield = previousAllowYield;
-
- return node.finishProperty('set', key, computed, value, false, false);
- }
- } else if (token.type === Token.Punctuator && token.value === '*' && lookaheadPropertyName()) {
- computed = match('[');
- key = parseObjectPropertyKey();
- methodNode = new Node();
-
- state.allowYield = true;
- params = parseParams();
- state.allowYield = previousAllowYield;
-
- state.allowYield = false;
- value = parsePropertyFunction(methodNode, params, true);
- state.allowYield = previousAllowYield;
-
- return node.finishProperty('init', key, computed, value, true, false);
- }
-
- if (key && match('(')) {
- value = parsePropertyMethodFunction();
- return node.finishProperty('init', key, computed, value, true, false);
- }
-
- // Not a MethodDefinition.
- return null;
- }
-
- function parseObjectProperty(hasProto) {
- var token = lookahead, node = new Node(), computed, key, maybeMethod, proto, value;
-
- computed = match('[');
- if (match('*')) {
- lex();
- } else {
- key = parseObjectPropertyKey();
- }
- maybeMethod = tryParseMethodDefinition(token, key, computed, node);
- if (maybeMethod) {
- return maybeMethod;
- }
-
- if (!key) {
- throwUnexpectedToken(lookahead);
- }
-
- // Check for duplicated __proto__
- if (!computed) {
- proto = (key.type === Syntax.Identifier && key.name === '__proto__') ||
- (key.type === Syntax.Literal && key.value === '__proto__');
- if (hasProto.value && proto) {
- tolerateError(Messages.DuplicateProtoProperty);
- }
- hasProto.value |= proto;
- }
-
- if (match(':')) {
- lex();
- value = inheritCoverGrammar(parseAssignmentExpression);
- return node.finishProperty('init', key, computed, value, false, false);
- }
-
- if (token.type === Token.Identifier) {
- if (match('=')) {
- firstCoverInitializedNameError = lookahead;
- lex();
- value = isolateCoverGrammar(parseAssignmentExpression);
- return node.finishProperty('init', key, computed,
- new WrappingNode(token).finishAssignmentPattern(key, value), false, true);
- }
- return node.finishProperty('init', key, computed, key, false, true);
- }
-
- throwUnexpectedToken(lookahead);
- }
-
- function parseObjectInitializer() {
- var properties = [], hasProto = {value: false}, node = new Node();
-
- expect('{');
-
- while (!match('}')) {
- properties.push(parseObjectProperty(hasProto));
-
- if (!match('}')) {
- expectCommaSeparator();
- }
- }
-
- expect('}');
-
- return node.finishObjectExpression(properties);
- }
-
- function reinterpretExpressionAsPattern(expr) {
- var i;
- switch (expr.type) {
- case Syntax.Identifier:
- case Syntax.MemberExpression:
- case Syntax.RestElement:
- case Syntax.AssignmentPattern:
- break;
- case Syntax.SpreadElement:
- expr.type = Syntax.RestElement;
- reinterpretExpressionAsPattern(expr.argument);
- break;
- case Syntax.ArrayExpression:
- expr.type = Syntax.ArrayPattern;
- for (i = 0; i < expr.elements.length; i++) {
- if (expr.elements[i] !== null) {
- reinterpretExpressionAsPattern(expr.elements[i]);
- }
- }
- break;
- case Syntax.ObjectExpression:
- expr.type = Syntax.ObjectPattern;
- for (i = 0; i < expr.properties.length; i++) {
- reinterpretExpressionAsPattern(expr.properties[i].value);
- }
- break;
- case Syntax.AssignmentExpression:
- expr.type = Syntax.AssignmentPattern;
- reinterpretExpressionAsPattern(expr.left);
- break;
- default:
- // Allow other node type for tolerant parsing.
- break;
- }
- }
-
- // ECMA-262 12.2.9 Template Literals
-
- function parseTemplateElement(option) {
- var node, token;
-
- if (lookahead.type !== Token.Template || (option.head && !lookahead.head)) {
- throwUnexpectedToken();
- }
-
- node = new Node();
- token = lex();
-
- return node.finishTemplateElement({ raw: token.value.raw, cooked: token.value.cooked }, token.tail);
- }
-
- function parseTemplateLiteral() {
- var quasi, quasis, expressions, node = new Node();
-
- quasi = parseTemplateElement({ head: true });
- quasis = [quasi];
- expressions = [];
-
- while (!quasi.tail) {
- expressions.push(parseExpression());
- quasi = parseTemplateElement({ head: false });
- quasis.push(quasi);
- }
-
- return node.finishTemplateLiteral(quasis, expressions);
- }
-
- // ECMA-262 12.2.10 The Grouping Operator
-
- function parseGroupExpression() {
- var expr, expressions, startToken, i, params = [];
-
- expect('(');
-
- if (match(')')) {
- lex();
- if (!match('=>')) {
- expect('=>');
- }
- return {
- type: PlaceHolders.ArrowParameterPlaceHolder,
- params: [],
- rawParams: []
- };
- }
-
- startToken = lookahead;
- if (match('...')) {
- expr = parseRestElement(params);
- expect(')');
- if (!match('=>')) {
- expect('=>');
- }
- return {
- type: PlaceHolders.ArrowParameterPlaceHolder,
- params: [expr]
- };
- }
-
- isBindingElement = true;
- expr = inheritCoverGrammar(parseAssignmentExpression);
-
- if (match(',')) {
- isAssignmentTarget = false;
- expressions = [expr];
-
- while (startIndex < length) {
- if (!match(',')) {
- break;
- }
- lex();
-
- if (match('...')) {
- if (!isBindingElement) {
- throwUnexpectedToken(lookahead);
- }
- expressions.push(parseRestElement(params));
- expect(')');
- if (!match('=>')) {
- expect('=>');
- }
- isBindingElement = false;
- for (i = 0; i < expressions.length; i++) {
- reinterpretExpressionAsPattern(expressions[i]);
- }
- return {
- type: PlaceHolders.ArrowParameterPlaceHolder,
- params: expressions
- };
- }
-
- expressions.push(inheritCoverGrammar(parseAssignmentExpression));
- }
-
- expr = new WrappingNode(startToken).finishSequenceExpression(expressions);
- }
-
-
- expect(')');
-
- if (match('=>')) {
- if (expr.type === Syntax.Identifier && expr.name === 'yield') {
- return {
- type: PlaceHolders.ArrowParameterPlaceHolder,
- params: [expr]
- };
- }
-
- if (!isBindingElement) {
- throwUnexpectedToken(lookahead);
- }
-
- if (expr.type === Syntax.SequenceExpression) {
- for (i = 0; i < expr.expressions.length; i++) {
- reinterpretExpressionAsPattern(expr.expressions[i]);
- }
- } else {
- reinterpretExpressionAsPattern(expr);
- }
-
- expr = {
- type: PlaceHolders.ArrowParameterPlaceHolder,
- params: expr.type === Syntax.SequenceExpression ? expr.expressions : [expr]
- };
- }
- isBindingElement = false;
- return expr;
- }
-
-
- // ECMA-262 12.2 Primary Expressions
-
- function parsePrimaryExpression() {
- var type, token, expr, node;
-
- if (match('(')) {
- isBindingElement = false;
- return inheritCoverGrammar(parseGroupExpression);
- }
-
- if (match('[')) {
- return inheritCoverGrammar(parseArrayInitializer);
- }
-
- if (match('{')) {
- return inheritCoverGrammar(parseObjectInitializer);
- }
-
- type = lookahead.type;
- node = new Node();
-
- if (type === Token.Identifier) {
- if (state.sourceType === 'module' && lookahead.value === 'await') {
- tolerateUnexpectedToken(lookahead);
- }
- expr = node.finishIdentifier(lex().value);
- } else if (type === Token.StringLiteral || type === Token.NumericLiteral) {
- isAssignmentTarget = isBindingElement = false;
- if (strict && lookahead.octal) {
- tolerateUnexpectedToken(lookahead, Messages.StrictOctalLiteral);
- }
- expr = node.finishLiteral(lex());
- } else if (type === Token.Keyword) {
- if (!strict && state.allowYield && matchKeyword('yield')) {
- return parseNonComputedProperty();
- }
- if (!strict && matchKeyword('let')) {
- return node.finishIdentifier(lex().value);
- }
- isAssignmentTarget = isBindingElement = false;
- if (matchKeyword('function')) {
- return parseFunctionExpression();
- }
- if (matchKeyword('this')) {
- lex();
- return node.finishThisExpression();
- }
- if (matchKeyword('class')) {
- return parseClassExpression();
- }
- throwUnexpectedToken(lex());
- } else if (type === Token.BooleanLiteral) {
- isAssignmentTarget = isBindingElement = false;
- token = lex();
- token.value = (token.value === 'true');
- expr = node.finishLiteral(token);
- } else if (type === Token.NullLiteral) {
- isAssignmentTarget = isBindingElement = false;
- token = lex();
- token.value = null;
- expr = node.finishLiteral(token);
- } else if (match('/') || match('/=')) {
- isAssignmentTarget = isBindingElement = false;
- index = startIndex;
-
- if (typeof extra.tokens !== 'undefined') {
- token = collectRegex();
- } else {
- token = scanRegExp();
- }
- lex();
- expr = node.finishLiteral(token);
- } else if (type === Token.Template) {
- expr = parseTemplateLiteral();
- } else {
- throwUnexpectedToken(lex());
- }
-
- return expr;
- }
-
- // ECMA-262 12.3 Left-Hand-Side Expressions
-
- function parseArguments() {
- var args = [], expr;
-
- expect('(');
-
- if (!match(')')) {
- while (startIndex < length) {
- if (match('...')) {
- expr = new Node();
- lex();
- expr.finishSpreadElement(isolateCoverGrammar(parseAssignmentExpression));
- } else {
- expr = isolateCoverGrammar(parseAssignmentExpression);
- }
- args.push(expr);
- if (match(')')) {
- break;
- }
- expectCommaSeparator();
- }
- }
-
- expect(')');
-
- return args;
- }
-
- function parseNonComputedProperty() {
- var token, node = new Node();
-
- token = lex();
-
- if (!isIdentifierName(token)) {
- throwUnexpectedToken(token);
- }
-
- return node.finishIdentifier(token.value);
- }
-
- function parseNonComputedMember() {
- expect('.');
-
- return parseNonComputedProperty();
- }
-
- function parseComputedMember() {
- var expr;
-
- expect('[');
-
- expr = isolateCoverGrammar(parseExpression);
-
- expect(']');
-
- return expr;
- }
-
- // ECMA-262 12.3.3 The new Operator
-
- function parseNewExpression() {
- var callee, args, node = new Node();
-
- expectKeyword('new');
-
- if (match('.')) {
- lex();
- if (lookahead.type === Token.Identifier && lookahead.value === 'target') {
- if (state.inFunctionBody) {
- lex();
- return node.finishMetaProperty('new', 'target');
- }
- }
- throwUnexpectedToken(lookahead);
- }
-
- callee = isolateCoverGrammar(parseLeftHandSideExpression);
- args = match('(') ? parseArguments() : [];
-
- isAssignmentTarget = isBindingElement = false;
-
- return node.finishNewExpression(callee, args);
- }
-
- // ECMA-262 12.3.4 Function Calls
-
- function parseLeftHandSideExpressionAllowCall() {
- var quasi, expr, args, property, startToken, previousAllowIn = state.allowIn;
-
- startToken = lookahead;
- state.allowIn = true;
-
- if (matchKeyword('super') && state.inFunctionBody) {
- expr = new Node();
- lex();
- expr = expr.finishSuper();
- if (!match('(') && !match('.') && !match('[')) {
- throwUnexpectedToken(lookahead);
- }
- } else {
- expr = inheritCoverGrammar(matchKeyword('new') ? parseNewExpression : parsePrimaryExpression);
- }
-
- for (;;) {
- if (match('.')) {
- isBindingElement = false;
- isAssignmentTarget = true;
- property = parseNonComputedMember();
- expr = new WrappingNode(startToken).finishMemberExpression('.', expr, property);
- } else if (match('(')) {
- isBindingElement = false;
- isAssignmentTarget = false;
- args = parseArguments();
- expr = new WrappingNode(startToken).finishCallExpression(expr, args);
- } else if (match('[')) {
- isBindingElement = false;
- isAssignmentTarget = true;
- property = parseComputedMember();
- expr = new WrappingNode(startToken).finishMemberExpression('[', expr, property);
- } else if (lookahead.type === Token.Template && lookahead.head) {
- quasi = parseTemplateLiteral();
- expr = new WrappingNode(startToken).finishTaggedTemplateExpression(expr, quasi);
- } else {
- break;
- }
- }
- state.allowIn = previousAllowIn;
-
- return expr;
- }
-
- // ECMA-262 12.3 Left-Hand-Side Expressions
-
- function parseLeftHandSideExpression() {
- var quasi, expr, property, startToken;
- assert(state.allowIn, 'callee of new expression always allow in keyword.');
-
- startToken = lookahead;
-
- if (matchKeyword('super') && state.inFunctionBody) {
- expr = new Node();
- lex();
- expr = expr.finishSuper();
- if (!match('[') && !match('.')) {
- throwUnexpectedToken(lookahead);
- }
- } else {
- expr = inheritCoverGrammar(matchKeyword('new') ? parseNewExpression : parsePrimaryExpression);
- }
-
- for (;;) {
- if (match('[')) {
- isBindingElement = false;
- isAssignmentTarget = true;
- property = parseComputedMember();
- expr = new WrappingNode(startToken).finishMemberExpression('[', expr, property);
- } else if (match('.')) {
- isBindingElement = false;
- isAssignmentTarget = true;
- property = parseNonComputedMember();
- expr = new WrappingNode(startToken).finishMemberExpression('.', expr, property);
- } else if (lookahead.type === Token.Template && lookahead.head) {
- quasi = parseTemplateLiteral();
- expr = new WrappingNode(startToken).finishTaggedTemplateExpression(expr, quasi);
- } else {
- break;
- }
- }
- return expr;
- }
-
- // ECMA-262 12.4 Postfix Expressions
-
- function parsePostfixExpression() {
- var expr, token, startToken = lookahead;
-
- expr = inheritCoverGrammar(parseLeftHandSideExpressionAllowCall);
-
- if (!hasLineTerminator && lookahead.type === Token.Punctuator) {
- if (match('++') || match('--')) {
- // ECMA-262 11.3.1, 11.3.2
- if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) {
- tolerateError(Messages.StrictLHSPostfix);
- }
-
- if (!isAssignmentTarget) {
- tolerateError(Messages.InvalidLHSInAssignment);
- }
-
- isAssignmentTarget = isBindingElement = false;
-
- token = lex();
- expr = new WrappingNode(startToken).finishPostfixExpression(token.value, expr);
- }
- }
-
- return expr;
- }
-
- // ECMA-262 12.5 Unary Operators
-
- function parseUnaryExpression() {
- var token, expr, startToken;
-
- if (lookahead.type !== Token.Punctuator && lookahead.type !== Token.Keyword) {
- expr = parsePostfixExpression();
- } else if (match('++') || match('--')) {
- startToken = lookahead;
- token = lex();
- expr = inheritCoverGrammar(parseUnaryExpression);
- // ECMA-262 11.4.4, 11.4.5
- if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) {
- tolerateError(Messages.StrictLHSPrefix);
- }
-
- if (!isAssignmentTarget) {
- tolerateError(Messages.InvalidLHSInAssignment);
- }
- expr = new WrappingNode(startToken).finishUnaryExpression(token.value, expr);
- isAssignmentTarget = isBindingElement = false;
- } else if (match('+') || match('-') || match('~') || match('!')) {
- startToken = lookahead;
- token = lex();
- expr = inheritCoverGrammar(parseUnaryExpression);
- expr = new WrappingNode(startToken).finishUnaryExpression(token.value, expr);
- isAssignmentTarget = isBindingElement = false;
- } else if (matchKeyword('delete') || matchKeyword('void') || matchKeyword('typeof')) {
- startToken = lookahead;
- token = lex();
- expr = inheritCoverGrammar(parseUnaryExpression);
- expr = new WrappingNode(startToken).finishUnaryExpression(token.value, expr);
- if (strict && expr.operator === 'delete' && expr.argument.type === Syntax.Identifier) {
- tolerateError(Messages.StrictDelete);
- }
- isAssignmentTarget = isBindingElement = false;
- } else {
- expr = parsePostfixExpression();
- }
-
- return expr;
- }
-
- function binaryPrecedence(token, allowIn) {
- var prec = 0;
-
- if (token.type !== Token.Punctuator && token.type !== Token.Keyword) {
- return 0;
- }
-
- switch (token.value) {
- case '||':
- prec = 1;
- break;
-
- case '&&':
- prec = 2;
- break;
-
- case '|':
- prec = 3;
- break;
-
- case '^':
- prec = 4;
- break;
-
- case '&':
- prec = 5;
- break;
-
- case '==':
- case '!=':
- case '===':
- case '!==':
- prec = 6;
- break;
-
- case '<':
- case '>':
- case '<=':
- case '>=':
- case 'instanceof':
- prec = 7;
- break;
-
- case 'in':
- prec = allowIn ? 7 : 0;
- break;
-
- case '<<':
- case '>>':
- case '>>>':
- prec = 8;
- break;
-
- case '+':
- case '-':
- prec = 9;
- break;
-
- case '*':
- case '/':
- case '%':
- prec = 11;
- break;
-
- default:
- break;
- }
-
- return prec;
- }
-
- // ECMA-262 12.6 Multiplicative Operators
- // ECMA-262 12.7 Additive Operators
- // ECMA-262 12.8 Bitwise Shift Operators
- // ECMA-262 12.9 Relational Operators
- // ECMA-262 12.10 Equality Operators
- // ECMA-262 12.11 Binary Bitwise Operators
- // ECMA-262 12.12 Binary Logical Operators
-
- function parseBinaryExpression() {
- var marker, markers, expr, token, prec, stack, right, operator, left, i;
-
- marker = lookahead;
- left = inheritCoverGrammar(parseUnaryExpression);
-
- token = lookahead;
- prec = binaryPrecedence(token, state.allowIn);
- if (prec === 0) {
- return left;
- }
- isAssignmentTarget = isBindingElement = false;
- token.prec = prec;
- lex();
-
- markers = [marker, lookahead];
- right = isolateCoverGrammar(parseUnaryExpression);
-
- stack = [left, token, right];
-
- while ((prec = binaryPrecedence(lookahead, state.allowIn)) > 0) {
-
- // Reduce: make a binary expression from the three topmost entries.
- while ((stack.length > 2) && (prec <= stack[stack.length - 2].prec)) {
- right = stack.pop();
- operator = stack.pop().value;
- left = stack.pop();
- markers.pop();
- expr = new WrappingNode(markers[markers.length - 1]).finishBinaryExpression(operator, left, right);
- stack.push(expr);
- }
-
- // Shift.
- token = lex();
- token.prec = prec;
- stack.push(token);
- markers.push(lookahead);
- expr = isolateCoverGrammar(parseUnaryExpression);
- stack.push(expr);
- }
-
- // Final reduce to clean-up the stack.
- i = stack.length - 1;
- expr = stack[i];
- markers.pop();
- while (i > 1) {
- expr = new WrappingNode(markers.pop()).finishBinaryExpression(stack[i - 1].value, stack[i - 2], expr);
- i -= 2;
- }
-
- return expr;
- }
-
-
- // ECMA-262 12.13 Conditional Operator
-
- function parseConditionalExpression() {
- var expr, previousAllowIn, consequent, alternate, startToken;
-
- startToken = lookahead;
-
- expr = inheritCoverGrammar(parseBinaryExpression);
- if (match('?')) {
- lex();
- previousAllowIn = state.allowIn;
- state.allowIn = true;
- consequent = isolateCoverGrammar(parseAssignmentExpression);
- state.allowIn = previousAllowIn;
- expect(':');
- alternate = isolateCoverGrammar(parseAssignmentExpression);
-
- expr = new WrappingNode(startToken).finishConditionalExpression(expr, consequent, alternate);
- isAssignmentTarget = isBindingElement = false;
- }
-
- return expr;
- }
-
- // ECMA-262 14.2 Arrow Function Definitions
-
- function parseConciseBody() {
- if (match('{')) {
- return parseFunctionSourceElements();
- }
- return isolateCoverGrammar(parseAssignmentExpression);
- }
-
- function checkPatternParam(options, param) {
- var i;
- switch (param.type) {
- case Syntax.Identifier:
- validateParam(options, param, param.name);
- break;
- case Syntax.RestElement:
- checkPatternParam(options, param.argument);
- break;
- case Syntax.AssignmentPattern:
- checkPatternParam(options, param.left);
- break;
- case Syntax.ArrayPattern:
- for (i = 0; i < param.elements.length; i++) {
- if (param.elements[i] !== null) {
- checkPatternParam(options, param.elements[i]);
- }
- }
- break;
- case Syntax.YieldExpression:
- break;
- default:
- assert(param.type === Syntax.ObjectPattern, 'Invalid type');
- for (i = 0; i < param.properties.length; i++) {
- checkPatternParam(options, param.properties[i].value);
- }
- break;
- }
- }
- function reinterpretAsCoverFormalsList(expr) {
- var i, len, param, params, defaults, defaultCount, options, token;
-
- defaults = [];
- defaultCount = 0;
- params = [expr];
-
- switch (expr.type) {
- case Syntax.Identifier:
- break;
- case PlaceHolders.ArrowParameterPlaceHolder:
- params = expr.params;
- break;
- default:
- return null;
- }
-
- options = {
- paramSet: {}
- };
-
- for (i = 0, len = params.length; i < len; i += 1) {
- param = params[i];
- switch (param.type) {
- case Syntax.AssignmentPattern:
- params[i] = param.left;
- if (param.right.type === Syntax.YieldExpression) {
- if (param.right.argument) {
- throwUnexpectedToken(lookahead);
- }
- param.right.type = Syntax.Identifier;
- param.right.name = 'yield';
- delete param.right.argument;
- delete param.right.delegate;
- }
- defaults.push(param.right);
- ++defaultCount;
- checkPatternParam(options, param.left);
- break;
- default:
- checkPatternParam(options, param);
- params[i] = param;
- defaults.push(null);
- break;
- }
- }
-
- if (strict || !state.allowYield) {
- for (i = 0, len = params.length; i < len; i += 1) {
- param = params[i];
- if (param.type === Syntax.YieldExpression) {
- throwUnexpectedToken(lookahead);
- }
- }
- }
-
- if (options.message === Messages.StrictParamDupe) {
- token = strict ? options.stricted : options.firstRestricted;
- throwUnexpectedToken(token, options.message);
- }
-
- if (defaultCount === 0) {
- defaults = [];
- }
-
- return {
- params: params,
- defaults: defaults,
- stricted: options.stricted,
- firstRestricted: options.firstRestricted,
- message: options.message
- };
- }
-
- function parseArrowFunctionExpression(options, node) {
- var previousStrict, previousAllowYield, body;
-
- if (hasLineTerminator) {
- tolerateUnexpectedToken(lookahead);
- }
- expect('=>');
-
- previousStrict = strict;
- previousAllowYield = state.allowYield;
- state.allowYield = true;
-
- body = parseConciseBody();
-
- if (strict && options.firstRestricted) {
- throwUnexpectedToken(options.firstRestricted, options.message);
- }
- if (strict && options.stricted) {
- tolerateUnexpectedToken(options.stricted, options.message);
- }
-
- strict = previousStrict;
- state.allowYield = previousAllowYield;
-
- return node.finishArrowFunctionExpression(options.params, options.defaults, body, body.type !== Syntax.BlockStatement);
- }
-
- // ECMA-262 14.4 Yield expression
-
- function parseYieldExpression() {
- var argument, expr, delegate, previousAllowYield;
-
- argument = null;
- expr = new Node();
- delegate = false;
-
- expectKeyword('yield');
-
- if (!hasLineTerminator) {
- previousAllowYield = state.allowYield;
- state.allowYield = false;
- delegate = match('*');
- if (delegate) {
- lex();
- argument = parseAssignmentExpression();
- } else {
- if (!match(';') && !match('}') && !match(')') && lookahead.type !== Token.EOF) {
- argument = parseAssignmentExpression();
- }
- }
- state.allowYield = previousAllowYield;
- }
-
- return expr.finishYieldExpression(argument, delegate);
- }
-
- // ECMA-262 12.14 Assignment Operators
-
- function parseAssignmentExpression() {
- var token, expr, right, list, startToken;
-
- startToken = lookahead;
- token = lookahead;
-
- if (!state.allowYield && matchKeyword('yield')) {
- return parseYieldExpression();
- }
-
- expr = parseConditionalExpression();
-
- if (expr.type === PlaceHolders.ArrowParameterPlaceHolder || match('=>')) {
- isAssignmentTarget = isBindingElement = false;
- list = reinterpretAsCoverFormalsList(expr);
-
- if (list) {
- firstCoverInitializedNameError = null;
- return parseArrowFunctionExpression(list, new WrappingNode(startToken));
- }
-
- return expr;
- }
-
- if (matchAssign()) {
- if (!isAssignmentTarget) {
- tolerateError(Messages.InvalidLHSInAssignment);
- }
-
- // ECMA-262 12.1.1
- if (strict && expr.type === Syntax.Identifier) {
- if (isRestrictedWord(expr.name)) {
- tolerateUnexpectedToken(token, Messages.StrictLHSAssignment);
- }
- if (isStrictModeReservedWord(expr.name)) {
- tolerateUnexpectedToken(token, Messages.StrictReservedWord);
- }
- }
-
- if (!match('=')) {
- isAssignmentTarget = isBindingElement = false;
- } else {
- reinterpretExpressionAsPattern(expr);
- }
-
- token = lex();
- right = isolateCoverGrammar(parseAssignmentExpression);
- expr = new WrappingNode(startToken).finishAssignmentExpression(token.value, expr, right);
- firstCoverInitializedNameError = null;
- }
-
- return expr;
- }
-
- // ECMA-262 12.15 Comma Operator
-
- function parseExpression() {
- var expr, startToken = lookahead, expressions;
-
- expr = isolateCoverGrammar(parseAssignmentExpression);
-
- if (match(',')) {
- expressions = [expr];
-
- while (startIndex < length) {
- if (!match(',')) {
- break;
- }
- lex();
- expressions.push(isolateCoverGrammar(parseAssignmentExpression));
- }
-
- expr = new WrappingNode(startToken).finishSequenceExpression(expressions);
- }
-
- return expr;
- }
-
- // ECMA-262 13.2 Block
-
- function parseStatementListItem() {
- if (lookahead.type === Token.Keyword) {
- switch (lookahead.value) {
- case 'export':
- if (state.sourceType !== 'module') {
- tolerateUnexpectedToken(lookahead, Messages.IllegalExportDeclaration);
- }
- return parseExportDeclaration();
- case 'import':
- if (state.sourceType !== 'module') {
- tolerateUnexpectedToken(lookahead, Messages.IllegalImportDeclaration);
- }
- return parseImportDeclaration();
- case 'const':
- return parseLexicalDeclaration({inFor: false});
- case 'function':
- return parseFunctionDeclaration(new Node());
- case 'class':
- return parseClassDeclaration();
- }
- }
-
- if (matchKeyword('let') && isLexicalDeclaration()) {
- return parseLexicalDeclaration({inFor: false});
- }
-
- return parseStatement();
- }
-
- function parseStatementList() {
- var list = [];
- while (startIndex < length) {
- if (match('}')) {
- break;
- }
- list.push(parseStatementListItem());
- }
-
- return list;
- }
-
- function parseBlock() {
- var block, node = new Node();
-
- expect('{');
-
- block = parseStatementList();
-
- expect('}');
-
- return node.finishBlockStatement(block);
- }
-
- // ECMA-262 13.3.2 Variable Statement
-
- function parseVariableIdentifier(kind) {
- var token, node = new Node();
-
- token = lex();
-
- if (token.type === Token.Keyword && token.value === 'yield') {
- if (strict) {
- tolerateUnexpectedToken(token, Messages.StrictReservedWord);
- } if (!state.allowYield) {
- throwUnexpectedToken(token);
- }
- } else if (token.type !== Token.Identifier) {
- if (strict && token.type === Token.Keyword && isStrictModeReservedWord(token.value)) {
- tolerateUnexpectedToken(token, Messages.StrictReservedWord);
- } else {
- if (strict || token.value !== 'let' || kind !== 'var') {
- throwUnexpectedToken(token);
- }
- }
- } else if (state.sourceType === 'module' && token.type === Token.Identifier && token.value === 'await') {
- tolerateUnexpectedToken(token);
- }
-
- return node.finishIdentifier(token.value);
- }
-
- function parseVariableDeclaration(options) {
- var init = null, id, node = new Node(), params = [];
-
- id = parsePattern(params, 'var');
-
- // ECMA-262 12.2.1
- if (strict && isRestrictedWord(id.name)) {
- tolerateError(Messages.StrictVarName);
- }
-
- if (match('=')) {
- lex();
- init = isolateCoverGrammar(parseAssignmentExpression);
- } else if (id.type !== Syntax.Identifier && !options.inFor) {
- expect('=');
- }
-
- return node.finishVariableDeclarator(id, init);
- }
-
- function parseVariableDeclarationList(options) {
- var opt, list;
-
- opt = { inFor: options.inFor };
- list = [parseVariableDeclaration(opt)];
-
- while (match(',')) {
- lex();
- list.push(parseVariableDeclaration(opt));
- }
-
- return list;
- }
-
- function parseVariableStatement(node) {
- var declarations;
-
- expectKeyword('var');
-
- declarations = parseVariableDeclarationList({ inFor: false });
-
- consumeSemicolon();
-
- return node.finishVariableDeclaration(declarations);
- }
-
- // ECMA-262 13.3.1 Let and Const Declarations
-
- function parseLexicalBinding(kind, options) {
- var init = null, id, node = new Node(), params = [];
-
- id = parsePattern(params, kind);
-
- // ECMA-262 12.2.1
- if (strict && id.type === Syntax.Identifier && isRestrictedWord(id.name)) {
- tolerateError(Messages.StrictVarName);
- }
-
- if (kind === 'const') {
- if (!matchKeyword('in') && !matchContextualKeyword('of')) {
- expect('=');
- init = isolateCoverGrammar(parseAssignmentExpression);
- }
- } else if ((!options.inFor && id.type !== Syntax.Identifier) || match('=')) {
- expect('=');
- init = isolateCoverGrammar(parseAssignmentExpression);
- }
-
- return node.finishVariableDeclarator(id, init);
- }
-
- function parseBindingList(kind, options) {
- var list = [parseLexicalBinding(kind, options)];
-
- while (match(',')) {
- lex();
- list.push(parseLexicalBinding(kind, options));
- }
-
- return list;
- }
-
-
- function tokenizerState() {
- return {
- index: index,
- lineNumber: lineNumber,
- lineStart: lineStart,
- hasLineTerminator: hasLineTerminator,
- lastIndex: lastIndex,
- lastLineNumber: lastLineNumber,
- lastLineStart: lastLineStart,
- startIndex: startIndex,
- startLineNumber: startLineNumber,
- startLineStart: startLineStart,
- lookahead: lookahead,
- tokenCount: extra.tokens ? extra.tokens.length : 0
- };
- }
-
- function resetTokenizerState(ts) {
- index = ts.index;
- lineNumber = ts.lineNumber;
- lineStart = ts.lineStart;
- hasLineTerminator = ts.hasLineTerminator;
- lastIndex = ts.lastIndex;
- lastLineNumber = ts.lastLineNumber;
- lastLineStart = ts.lastLineStart;
- startIndex = ts.startIndex;
- startLineNumber = ts.startLineNumber;
- startLineStart = ts.startLineStart;
- lookahead = ts.lookahead;
- if (extra.tokens) {
- extra.tokens.splice(ts.tokenCount, extra.tokens.length);
- }
- }
-
- function isLexicalDeclaration() {
- var lexical, ts;
-
- ts = tokenizerState();
-
- lex();
- lexical = (lookahead.type === Token.Identifier) || match('[') || match('{') ||
- matchKeyword('let') || matchKeyword('yield');
-
- resetTokenizerState(ts);
-
- return lexical;
- }
-
- function parseLexicalDeclaration(options) {
- var kind, declarations, node = new Node();
-
- kind = lex().value;
- assert(kind === 'let' || kind === 'const', 'Lexical declaration must be either let or const');
-
- declarations = parseBindingList(kind, options);
-
- consumeSemicolon();
-
- return node.finishLexicalDeclaration(declarations, kind);
- }
-
- function parseRestElement(params) {
- var param, node = new Node();
-
- lex();
-
- if (match('{')) {
- throwError(Messages.ObjectPatternAsRestParameter);
- }
-
- params.push(lookahead);
-
- param = parseVariableIdentifier();
-
- if (match('=')) {
- throwError(Messages.DefaultRestParameter);
- }
-
- if (!match(')')) {
- throwError(Messages.ParameterAfterRestParameter);
- }
-
- return node.finishRestElement(param);
- }
-
- // ECMA-262 13.4 Empty Statement
-
- function parseEmptyStatement(node) {
- expect(';');
- return node.finishEmptyStatement();
- }
-
- // ECMA-262 12.4 Expression Statement
-
- function parseExpressionStatement(node) {
- var expr = parseExpression();
- consumeSemicolon();
- return node.finishExpressionStatement(expr);
- }
-
- // ECMA-262 13.6 If statement
-
- function parseIfStatement(node) {
- var test, consequent, alternate;
-
- expectKeyword('if');
-
- expect('(');
-
- test = parseExpression();
-
- expect(')');
-
- consequent = parseStatement();
-
- if (matchKeyword('else')) {
- lex();
- alternate = parseStatement();
- } else {
- alternate = null;
- }
-
- return node.finishIfStatement(test, consequent, alternate);
- }
-
- // ECMA-262 13.7 Iteration Statements
-
- function parseDoWhileStatement(node) {
- var body, test, oldInIteration;
-
- expectKeyword('do');
-
- oldInIteration = state.inIteration;
- state.inIteration = true;
-
- body = parseStatement();
-
- state.inIteration = oldInIteration;
-
- expectKeyword('while');
-
- expect('(');
-
- test = parseExpression();
-
- expect(')');
-
- if (match(';')) {
- lex();
- }
-
- return node.finishDoWhileStatement(body, test);
- }
-
- function parseWhileStatement(node) {
- var test, body, oldInIteration;
-
- expectKeyword('while');
-
- expect('(');
-
- test = parseExpression();
-
- expect(')');
-
- oldInIteration = state.inIteration;
- state.inIteration = true;
-
- body = parseStatement();
-
- state.inIteration = oldInIteration;
-
- return node.finishWhileStatement(test, body);
- }
-
- function parseForStatement(node) {
- var init, forIn, initSeq, initStartToken, test, update, left, right, kind, declarations,
- body, oldInIteration, previousAllowIn = state.allowIn;
-
- init = test = update = null;
- forIn = true;
-
- expectKeyword('for');
-
- expect('(');
-
- if (match(';')) {
- lex();
- } else {
- if (matchKeyword('var')) {
- init = new Node();
- lex();
-
- state.allowIn = false;
- declarations = parseVariableDeclarationList({ inFor: true });
- state.allowIn = previousAllowIn;
-
- if (declarations.length === 1 && matchKeyword('in')) {
- init = init.finishVariableDeclaration(declarations);
- lex();
- left = init;
- right = parseExpression();
- init = null;
- } else if (declarations.length === 1 && declarations[0].init === null && matchContextualKeyword('of')) {
- init = init.finishVariableDeclaration(declarations);
- lex();
- left = init;
- right = parseAssignmentExpression();
- init = null;
- forIn = false;
- } else {
- init = init.finishVariableDeclaration(declarations);
- expect(';');
- }
- } else if (matchKeyword('const') || matchKeyword('let')) {
- init = new Node();
- kind = lex().value;
-
- if (!strict && lookahead.value === 'in') {
- init = init.finishIdentifier(kind);
- lex();
- left = init;
- right = parseExpression();
- init = null;
- } else {
- state.allowIn = false;
- declarations = parseBindingList(kind, {inFor: true});
- state.allowIn = previousAllowIn;
-
- if (declarations.length === 1 && declarations[0].init === null && matchKeyword('in')) {
- init = init.finishLexicalDeclaration(declarations, kind);
- lex();
- left = init;
- right = parseExpression();
- init = null;
- } else if (declarations.length === 1 && declarations[0].init === null && matchContextualKeyword('of')) {
- init = init.finishLexicalDeclaration(declarations, kind);
- lex();
- left = init;
- right = parseAssignmentExpression();
- init = null;
- forIn = false;
- } else {
- consumeSemicolon();
- init = init.finishLexicalDeclaration(declarations, kind);
- }
- }
- } else {
- initStartToken = lookahead;
- state.allowIn = false;
- init = inheritCoverGrammar(parseAssignmentExpression);
- state.allowIn = previousAllowIn;
-
- if (matchKeyword('in')) {
- if (!isAssignmentTarget) {
- tolerateError(Messages.InvalidLHSInForIn);
- }
-
- lex();
- reinterpretExpressionAsPattern(init);
- left = init;
- right = parseExpression();
- init = null;
- } else if (matchContextualKeyword('of')) {
- if (!isAssignmentTarget) {
- tolerateError(Messages.InvalidLHSInForLoop);
- }
-
- lex();
- reinterpretExpressionAsPattern(init);
- left = init;
- right = parseAssignmentExpression();
- init = null;
- forIn = false;
- } else {
- if (match(',')) {
- initSeq = [init];
- while (match(',')) {
- lex();
- initSeq.push(isolateCoverGrammar(parseAssignmentExpression));
- }
- init = new WrappingNode(initStartToken).finishSequenceExpression(initSeq);
- }
- expect(';');
- }
- }
- }
-
- if (typeof left === 'undefined') {
-
- if (!match(';')) {
- test = parseExpression();
- }
- expect(';');
-
- if (!match(')')) {
- update = parseExpression();
- }
- }
-
- expect(')');
-
- oldInIteration = state.inIteration;
- state.inIteration = true;
-
- body = isolateCoverGrammar(parseStatement);
-
- state.inIteration = oldInIteration;
-
- return (typeof left === 'undefined') ?
- node.finishForStatement(init, test, update, body) :
- forIn ? node.finishForInStatement(left, right, body) :
- node.finishForOfStatement(left, right, body);
- }
-
- // ECMA-262 13.8 The continue statement
-
- function parseContinueStatement(node) {
- var label = null, key;
-
- expectKeyword('continue');
-
- // Optimize the most common form: 'continue;'.
- if (source.charCodeAt(startIndex) === 0x3B) {
- lex();
-
- if (!state.inIteration) {
- throwError(Messages.IllegalContinue);
- }
-
- return node.finishContinueStatement(null);
- }
-
- if (hasLineTerminator) {
- if (!state.inIteration) {
- throwError(Messages.IllegalContinue);
- }
-
- return node.finishContinueStatement(null);
- }
-
- if (lookahead.type === Token.Identifier) {
- label = parseVariableIdentifier();
-
- key = '$' + label.name;
- if (!Object.prototype.hasOwnProperty.call(state.labelSet, key)) {
- throwError(Messages.UnknownLabel, label.name);
- }
- }
-
- consumeSemicolon();
-
- if (label === null && !state.inIteration) {
- throwError(Messages.IllegalContinue);
- }
-
- return node.finishContinueStatement(label);
- }
-
- // ECMA-262 13.9 The break statement
-
- function parseBreakStatement(node) {
- var label = null, key;
-
- expectKeyword('break');
-
- // Catch the very common case first: immediately a semicolon (U+003B).
- if (source.charCodeAt(lastIndex) === 0x3B) {
- lex();
-
- if (!(state.inIteration || state.inSwitch)) {
- throwError(Messages.IllegalBreak);
- }
-
- return node.finishBreakStatement(null);
- }
-
- if (hasLineTerminator) {
- if (!(state.inIteration || state.inSwitch)) {
- throwError(Messages.IllegalBreak);
- }
- } else if (lookahead.type === Token.Identifier) {
- label = parseVariableIdentifier();
-
- key = '$' + label.name;
- if (!Object.prototype.hasOwnProperty.call(state.labelSet, key)) {
- throwError(Messages.UnknownLabel, label.name);
- }
- }
-
- consumeSemicolon();
-
- if (label === null && !(state.inIteration || state.inSwitch)) {
- throwError(Messages.IllegalBreak);
- }
-
- return node.finishBreakStatement(label);
- }
-
- // ECMA-262 13.10 The return statement
-
- function parseReturnStatement(node) {
- var argument = null;
-
- expectKeyword('return');
-
- if (!state.inFunctionBody) {
- tolerateError(Messages.IllegalReturn);
- }
-
- // 'return' followed by a space and an identifier is very common.
- if (source.charCodeAt(lastIndex) === 0x20) {
- if (isIdentifierStart(source.charCodeAt(lastIndex + 1))) {
- argument = parseExpression();
- consumeSemicolon();
- return node.finishReturnStatement(argument);
- }
- }
-
- if (hasLineTerminator) {
- // HACK
- return node.finishReturnStatement(null);
- }
-
- if (!match(';')) {
- if (!match('}') && lookahead.type !== Token.EOF) {
- argument = parseExpression();
- }
- }
-
- consumeSemicolon();
-
- return node.finishReturnStatement(argument);
- }
-
- // ECMA-262 13.11 The with statement
-
- function parseWithStatement(node) {
- var object, body;
-
- if (strict) {
- tolerateError(Messages.StrictModeWith);
- }
-
- expectKeyword('with');
-
- expect('(');
-
- object = parseExpression();
-
- expect(')');
-
- body = parseStatement();
-
- return node.finishWithStatement(object, body);
- }
-
- // ECMA-262 13.12 The switch statement
-
- function parseSwitchCase() {
- var test, consequent = [], statement, node = new Node();
-
- if (matchKeyword('default')) {
- lex();
- test = null;
- } else {
- expectKeyword('case');
- test = parseExpression();
- }
- expect(':');
-
- while (startIndex < length) {
- if (match('}') || matchKeyword('default') || matchKeyword('case')) {
- break;
- }
- statement = parseStatementListItem();
- consequent.push(statement);
- }
-
- return node.finishSwitchCase(test, consequent);
- }
-
- function parseSwitchStatement(node) {
- var discriminant, cases, clause, oldInSwitch, defaultFound;
-
- expectKeyword('switch');
-
- expect('(');
-
- discriminant = parseExpression();
-
- expect(')');
-
- expect('{');
-
- cases = [];
-
- if (match('}')) {
- lex();
- return node.finishSwitchStatement(discriminant, cases);
- }
-
- oldInSwitch = state.inSwitch;
- state.inSwitch = true;
- defaultFound = false;
-
- while (startIndex < length) {
- if (match('}')) {
- break;
- }
- clause = parseSwitchCase();
- if (clause.test === null) {
- if (defaultFound) {
- throwError(Messages.MultipleDefaultsInSwitch);
- }
- defaultFound = true;
- }
- cases.push(clause);
- }
-
- state.inSwitch = oldInSwitch;
-
- expect('}');
-
- return node.finishSwitchStatement(discriminant, cases);
- }
-
- // ECMA-262 13.14 The throw statement
-
- function parseThrowStatement(node) {
- var argument;
-
- expectKeyword('throw');
-
- if (hasLineTerminator) {
- throwError(Messages.NewlineAfterThrow);
- }
-
- argument = parseExpression();
-
- consumeSemicolon();
-
- return node.finishThrowStatement(argument);
- }
-
- // ECMA-262 13.15 The try statement
-
- function parseCatchClause() {
- var param, params = [], paramMap = {}, key, i, body, node = new Node();
-
- expectKeyword('catch');
-
- expect('(');
- if (match(')')) {
- throwUnexpectedToken(lookahead);
- }
-
- param = parsePattern(params);
- for (i = 0; i < params.length; i++) {
- key = '$' + params[i].value;
- if (Object.prototype.hasOwnProperty.call(paramMap, key)) {
- tolerateError(Messages.DuplicateBinding, params[i].value);
- }
- paramMap[key] = true;
- }
-
- // ECMA-262 12.14.1
- if (strict && isRestrictedWord(param.name)) {
- tolerateError(Messages.StrictCatchVariable);
- }
-
- expect(')');
- body = parseBlock();
- return node.finishCatchClause(param, body);
- }
-
- function parseTryStatement(node) {
- var block, handler = null, finalizer = null;
-
- expectKeyword('try');
-
- block = parseBlock();
-
- if (matchKeyword('catch')) {
- handler = parseCatchClause();
- }
-
- if (matchKeyword('finally')) {
- lex();
- finalizer = parseBlock();
- }
-
- if (!handler && !finalizer) {
- throwError(Messages.NoCatchOrFinally);
- }
-
- return node.finishTryStatement(block, handler, finalizer);
- }
-
- // ECMA-262 13.16 The debugger statement
-
- function parseDebuggerStatement(node) {
- expectKeyword('debugger');
-
- consumeSemicolon();
-
- return node.finishDebuggerStatement();
- }
-
- // 13 Statements
-
- function parseStatement() {
- var type = lookahead.type,
- expr,
- labeledBody,
- key,
- node;
-
- if (type === Token.EOF) {
- throwUnexpectedToken(lookahead);
- }
-
- if (type === Token.Punctuator && lookahead.value === '{') {
- return parseBlock();
- }
- isAssignmentTarget = isBindingElement = true;
- node = new Node();
-
- if (type === Token.Punctuator) {
- switch (lookahead.value) {
- case ';':
- return parseEmptyStatement(node);
- case '(':
- return parseExpressionStatement(node);
- default:
- break;
- }
- } else if (type === Token.Keyword) {
- switch (lookahead.value) {
- case 'break':
- return parseBreakStatement(node);
- case 'continue':
- return parseContinueStatement(node);
- case 'debugger':
- return parseDebuggerStatement(node);
- case 'do':
- return parseDoWhileStatement(node);
- case 'for':
- return parseForStatement(node);
- case 'function':
- return parseFunctionDeclaration(node);
- case 'if':
- return parseIfStatement(node);
- case 'return':
- return parseReturnStatement(node);
- case 'switch':
- return parseSwitchStatement(node);
- case 'throw':
- return parseThrowStatement(node);
- case 'try':
- return parseTryStatement(node);
- case 'var':
- return parseVariableStatement(node);
- case 'while':
- return parseWhileStatement(node);
- case 'with':
- return parseWithStatement(node);
- default:
- break;
- }
- }
-
- expr = parseExpression();
-
- // ECMA-262 12.12 Labelled Statements
- if ((expr.type === Syntax.Identifier) && match(':')) {
- lex();
-
- key = '$' + expr.name;
- if (Object.prototype.hasOwnProperty.call(state.labelSet, key)) {
- throwError(Messages.Redeclaration, 'Label', expr.name);
- }
-
- state.labelSet[key] = true;
- labeledBody = parseStatement();
- delete state.labelSet[key];
- return node.finishLabeledStatement(expr, labeledBody);
- }
-
- consumeSemicolon();
-
- return node.finishExpressionStatement(expr);
- }
-
- // ECMA-262 14.1 Function Definition
-
- function parseFunctionSourceElements() {
- var statement, body = [], token, directive, firstRestricted,
- oldLabelSet, oldInIteration, oldInSwitch, oldInFunctionBody,
- node = new Node();
-
- expect('{');
-
- while (startIndex < length) {
- if (lookahead.type !== Token.StringLiteral) {
- break;
- }
- token = lookahead;
-
- statement = parseStatementListItem();
- body.push(statement);
- if (statement.expression.type !== Syntax.Literal) {
- // this is not directive
- break;
- }
- directive = source.slice(token.start + 1, token.end - 1);
- if (directive === 'use strict') {
- strict = true;
- if (firstRestricted) {
- tolerateUnexpectedToken(firstRestricted, Messages.StrictOctalLiteral);
- }
- } else {
- if (!firstRestricted && token.octal) {
- firstRestricted = token;
- }
- }
- }
-
- oldLabelSet = state.labelSet;
- oldInIteration = state.inIteration;
- oldInSwitch = state.inSwitch;
- oldInFunctionBody = state.inFunctionBody;
-
- state.labelSet = {};
- state.inIteration = false;
- state.inSwitch = false;
- state.inFunctionBody = true;
-
- while (startIndex < length) {
- if (match('}')) {
- break;
- }
- body.push(parseStatementListItem());
- }
-
- expect('}');
-
- state.labelSet = oldLabelSet;
- state.inIteration = oldInIteration;
- state.inSwitch = oldInSwitch;
- state.inFunctionBody = oldInFunctionBody;
-
- return node.finishBlockStatement(body);
- }
-
- function validateParam(options, param, name) {
- var key = '$' + name;
- if (strict) {
- if (isRestrictedWord(name)) {
- options.stricted = param;
- options.message = Messages.StrictParamName;
- }
- if (Object.prototype.hasOwnProperty.call(options.paramSet, key)) {
- options.stricted = param;
- options.message = Messages.StrictParamDupe;
- }
- } else if (!options.firstRestricted) {
- if (isRestrictedWord(name)) {
- options.firstRestricted = param;
- options.message = Messages.StrictParamName;
- } else if (isStrictModeReservedWord(name)) {
- options.firstRestricted = param;
- options.message = Messages.StrictReservedWord;
- } else if (Object.prototype.hasOwnProperty.call(options.paramSet, key)) {
- options.stricted = param;
- options.message = Messages.StrictParamDupe;
- }
- }
- options.paramSet[key] = true;
- }
-
- function parseParam(options) {
- var token, param, params = [], i, def;
-
- token = lookahead;
- if (token.value === '...') {
- param = parseRestElement(params);
- validateParam(options, param.argument, param.argument.name);
- options.params.push(param);
- options.defaults.push(null);
- return false;
- }
-
- param = parsePatternWithDefault(params);
- for (i = 0; i < params.length; i++) {
- validateParam(options, params[i], params[i].value);
- }
-
- if (param.type === Syntax.AssignmentPattern) {
- def = param.right;
- param = param.left;
- ++options.defaultCount;
- }
-
- options.params.push(param);
- options.defaults.push(def);
-
- return !match(')');
- }
-
- function parseParams(firstRestricted) {
- var options;
-
- options = {
- params: [],
- defaultCount: 0,
- defaults: [],
- firstRestricted: firstRestricted
- };
-
- expect('(');
-
- if (!match(')')) {
- options.paramSet = {};
- while (startIndex < length) {
- if (!parseParam(options)) {
- break;
- }
- expect(',');
- }
- }
-
- expect(')');
-
- if (options.defaultCount === 0) {
- options.defaults = [];
- }
-
- return {
- params: options.params,
- defaults: options.defaults,
- stricted: options.stricted,
- firstRestricted: options.firstRestricted,
- message: options.message
- };
- }
-
- function parseFunctionDeclaration(node, identifierIsOptional) {
- var id = null, params = [], defaults = [], body, token, stricted, tmp, firstRestricted, message, previousStrict,
- isGenerator, previousAllowYield;
-
- previousAllowYield = state.allowYield;
-
- expectKeyword('function');
-
- isGenerator = match('*');
- if (isGenerator) {
- lex();
- }
-
- if (!identifierIsOptional || !match('(')) {
- token = lookahead;
- id = parseVariableIdentifier();
- if (strict) {
- if (isRestrictedWord(token.value)) {
- tolerateUnexpectedToken(token, Messages.StrictFunctionName);
- }
- } else {
- if (isRestrictedWord(token.value)) {
- firstRestricted = token;
- message = Messages.StrictFunctionName;
- } else if (isStrictModeReservedWord(token.value)) {
- firstRestricted = token;
- message = Messages.StrictReservedWord;
- }
- }
- }
-
- state.allowYield = !isGenerator;
- tmp = parseParams(firstRestricted);
- params = tmp.params;
- defaults = tmp.defaults;
- stricted = tmp.stricted;
- firstRestricted = tmp.firstRestricted;
- if (tmp.message) {
- message = tmp.message;
- }
-
-
- previousStrict = strict;
- body = parseFunctionSourceElements();
- if (strict && firstRestricted) {
- throwUnexpectedToken(firstRestricted, message);
- }
- if (strict && stricted) {
- tolerateUnexpectedToken(stricted, message);
- }
-
- strict = previousStrict;
- state.allowYield = previousAllowYield;
-
- return node.finishFunctionDeclaration(id, params, defaults, body, isGenerator);
- }
-
- function parseFunctionExpression() {
- var token, id = null, stricted, firstRestricted, message, tmp,
- params = [], defaults = [], body, previousStrict, node = new Node(),
- isGenerator, previousAllowYield;
-
- previousAllowYield = state.allowYield;
-
- expectKeyword('function');
-
- isGenerator = match('*');
- if (isGenerator) {
- lex();
- }
-
- state.allowYield = !isGenerator;
- if (!match('(')) {
- token = lookahead;
- id = (!strict && !isGenerator && matchKeyword('yield')) ? parseNonComputedProperty() : parseVariableIdentifier();
- if (strict) {
- if (isRestrictedWord(token.value)) {
- tolerateUnexpectedToken(token, Messages.StrictFunctionName);
- }
- } else {
- if (isRestrictedWord(token.value)) {
- firstRestricted = token;
- message = Messages.StrictFunctionName;
- } else if (isStrictModeReservedWord(token.value)) {
- firstRestricted = token;
- message = Messages.StrictReservedWord;
- }
- }
- }
-
- tmp = parseParams(firstRestricted);
- params = tmp.params;
- defaults = tmp.defaults;
- stricted = tmp.stricted;
- firstRestricted = tmp.firstRestricted;
- if (tmp.message) {
- message = tmp.message;
- }
-
- previousStrict = strict;
- body = parseFunctionSourceElements();
- if (strict && firstRestricted) {
- throwUnexpectedToken(firstRestricted, message);
- }
- if (strict && stricted) {
- tolerateUnexpectedToken(stricted, message);
- }
- strict = previousStrict;
- state.allowYield = previousAllowYield;
-
- return node.finishFunctionExpression(id, params, defaults, body, isGenerator);
- }
-
- // ECMA-262 14.5 Class Definitions
-
- function parseClassBody() {
- var classBody, token, isStatic, hasConstructor = false, body, method, computed, key;
-
- classBody = new Node();
-
- expect('{');
- body = [];
- while (!match('}')) {
- if (match(';')) {
- lex();
- } else {
- method = new Node();
- token = lookahead;
- isStatic = false;
- computed = match('[');
- if (match('*')) {
- lex();
- } else {
- key = parseObjectPropertyKey();
- if (key.name === 'static' && (lookaheadPropertyName() || match('*'))) {
- token = lookahead;
- isStatic = true;
- computed = match('[');
- if (match('*')) {
- lex();
- } else {
- key = parseObjectPropertyKey();
- }
- }
- }
- method = tryParseMethodDefinition(token, key, computed, method);
- if (method) {
- method['static'] = isStatic; // jscs:ignore requireDotNotation
- if (method.kind === 'init') {
- method.kind = 'method';
- }
- if (!isStatic) {
- if (!method.computed && (method.key.name || method.key.value.toString()) === 'constructor') {
- if (method.kind !== 'method' || !method.method || method.value.generator) {
- throwUnexpectedToken(token, Messages.ConstructorSpecialMethod);
- }
- if (hasConstructor) {
- throwUnexpectedToken(token, Messages.DuplicateConstructor);
- } else {
- hasConstructor = true;
- }
- method.kind = 'constructor';
- }
- } else {
- if (!method.computed && (method.key.name || method.key.value.toString()) === 'prototype') {
- throwUnexpectedToken(token, Messages.StaticPrototype);
- }
- }
- method.type = Syntax.MethodDefinition;
- delete method.method;
- delete method.shorthand;
- body.push(method);
- } else {
- throwUnexpectedToken(lookahead);
- }
- }
- }
- lex();
- return classBody.finishClassBody(body);
- }
-
- function parseClassDeclaration(identifierIsOptional) {
- var id = null, superClass = null, classNode = new Node(), classBody, previousStrict = strict;
- strict = true;
-
- expectKeyword('class');
-
- if (!identifierIsOptional || lookahead.type === Token.Identifier) {
- id = parseVariableIdentifier();
- }
-
- if (matchKeyword('extends')) {
- lex();
- superClass = isolateCoverGrammar(parseLeftHandSideExpressionAllowCall);
- }
- classBody = parseClassBody();
- strict = previousStrict;
-
- return classNode.finishClassDeclaration(id, superClass, classBody);
- }
-
- function parseClassExpression() {
- var id = null, superClass = null, classNode = new Node(), classBody, previousStrict = strict;
- strict = true;
-
- expectKeyword('class');
-
- if (lookahead.type === Token.Identifier) {
- id = parseVariableIdentifier();
- }
-
- if (matchKeyword('extends')) {
- lex();
- superClass = isolateCoverGrammar(parseLeftHandSideExpressionAllowCall);
- }
- classBody = parseClassBody();
- strict = previousStrict;
-
- return classNode.finishClassExpression(id, superClass, classBody);
- }
-
- // ECMA-262 15.2 Modules
-
- function parseModuleSpecifier() {
- var node = new Node();
-
- if (lookahead.type !== Token.StringLiteral) {
- throwError(Messages.InvalidModuleSpecifier);
- }
- return node.finishLiteral(lex());
- }
-
- // ECMA-262 15.2.3 Exports
-
- function parseExportSpecifier() {
- var exported, local, node = new Node(), def;
- if (matchKeyword('default')) {
- // export {default} from 'something';
- def = new Node();
- lex();
- local = def.finishIdentifier('default');
- } else {
- local = parseVariableIdentifier();
- }
- if (matchContextualKeyword('as')) {
- lex();
- exported = parseNonComputedProperty();
- }
- return node.finishExportSpecifier(local, exported);
- }
-
- function parseExportNamedDeclaration(node) {
- var declaration = null,
- isExportFromIdentifier,
- src = null, specifiers = [];
-
- // non-default export
- if (lookahead.type === Token.Keyword) {
- // covers:
- // export var f = 1;
- switch (lookahead.value) {
- case 'let':
- case 'const':
- declaration = parseLexicalDeclaration({inFor: false});
- return node.finishExportNamedDeclaration(declaration, specifiers, null);
- case 'var':
- case 'class':
- case 'function':
- declaration = parseStatementListItem();
- return node.finishExportNamedDeclaration(declaration, specifiers, null);
- }
- }
-
- expect('{');
- while (!match('}')) {
- isExportFromIdentifier = isExportFromIdentifier || matchKeyword('default');
- specifiers.push(parseExportSpecifier());
- if (!match('}')) {
- expect(',');
- if (match('}')) {
- break;
- }
- }
- }
- expect('}');
-
- if (matchContextualKeyword('from')) {
- // covering:
- // export {default} from 'foo';
- // export {foo} from 'foo';
- lex();
- src = parseModuleSpecifier();
- consumeSemicolon();
- } else if (isExportFromIdentifier) {
- // covering:
- // export {default}; // missing fromClause
- throwError(lookahead.value ?
- Messages.UnexpectedToken : Messages.MissingFromClause, lookahead.value);
- } else {
- // cover
- // export {foo};
- consumeSemicolon();
- }
- return node.finishExportNamedDeclaration(declaration, specifiers, src);
- }
-
- function parseExportDefaultDeclaration(node) {
- var declaration = null,
- expression = null;
-
- // covers:
- // export default ...
- expectKeyword('default');
-
- if (matchKeyword('function')) {
- // covers:
- // export default function foo () {}
- // export default function () {}
- declaration = parseFunctionDeclaration(new Node(), true);
- return node.finishExportDefaultDeclaration(declaration);
- }
- if (matchKeyword('class')) {
- declaration = parseClassDeclaration(true);
- return node.finishExportDefaultDeclaration(declaration);
- }
-
- if (matchContextualKeyword('from')) {
- throwError(Messages.UnexpectedToken, lookahead.value);
- }
-
- // covers:
- // export default {};
- // export default [];
- // export default (1 + 2);
- if (match('{')) {
- expression = parseObjectInitializer();
- } else if (match('[')) {
- expression = parseArrayInitializer();
- } else {
- expression = parseAssignmentExpression();
- }
- consumeSemicolon();
- return node.finishExportDefaultDeclaration(expression);
- }
-
- function parseExportAllDeclaration(node) {
- var src;
-
- // covers:
- // export * from 'foo';
- expect('*');
- if (!matchContextualKeyword('from')) {
- throwError(lookahead.value ?
- Messages.UnexpectedToken : Messages.MissingFromClause, lookahead.value);
- }
- lex();
- src = parseModuleSpecifier();
- consumeSemicolon();
-
- return node.finishExportAllDeclaration(src);
- }
-
- function parseExportDeclaration() {
- var node = new Node();
- if (state.inFunctionBody) {
- throwError(Messages.IllegalExportDeclaration);
- }
-
- expectKeyword('export');
-
- if (matchKeyword('default')) {
- return parseExportDefaultDeclaration(node);
- }
- if (match('*')) {
- return parseExportAllDeclaration(node);
- }
- return parseExportNamedDeclaration(node);
- }
-
- // ECMA-262 15.2.2 Imports
-
- function parseImportSpecifier() {
- // import {<foo as bar>} ...;
- var local, imported, node = new Node();
-
- imported = parseNonComputedProperty();
- if (matchContextualKeyword('as')) {
- lex();
- local = parseVariableIdentifier();
- }
-
- return node.finishImportSpecifier(local, imported);
- }
-
- function parseNamedImports() {
- var specifiers = [];
- // {foo, bar as bas}
- expect('{');
- while (!match('}')) {
- specifiers.push(parseImportSpecifier());
- if (!match('}')) {
- expect(',');
- if (match('}')) {
- break;
- }
- }
- }
- expect('}');
- return specifiers;
- }
-
- function parseImportDefaultSpecifier() {
- // import <foo> ...;
- var local, node = new Node();
-
- local = parseNonComputedProperty();
-
- return node.finishImportDefaultSpecifier(local);
- }
-
- function parseImportNamespaceSpecifier() {
- // import <* as foo> ...;
- var local, node = new Node();
-
- expect('*');
- if (!matchContextualKeyword('as')) {
- throwError(Messages.NoAsAfterImportNamespace);
- }
- lex();
- local = parseNonComputedProperty();
-
- return node.finishImportNamespaceSpecifier(local);
- }
-
- function parseImportDeclaration() {
- var specifiers = [], src, node = new Node();
-
- if (state.inFunctionBody) {
- throwError(Messages.IllegalImportDeclaration);
- }
-
- expectKeyword('import');
-
- if (lookahead.type === Token.StringLiteral) {
- // import 'foo';
- src = parseModuleSpecifier();
- } else {
-
- if (match('{')) {
- // import {bar}
- specifiers = specifiers.concat(parseNamedImports());
- } else if (match('*')) {
- // import * as foo
- specifiers.push(parseImportNamespaceSpecifier());
- } else if (isIdentifierName(lookahead) && !matchKeyword('default')) {
- // import foo
- specifiers.push(parseImportDefaultSpecifier());
- if (match(',')) {
- lex();
- if (match('*')) {
- // import foo, * as foo
- specifiers.push(parseImportNamespaceSpecifier());
- } else if (match('{')) {
- // import foo, {bar}
- specifiers = specifiers.concat(parseNamedImports());
- } else {
- throwUnexpectedToken(lookahead);
- }
- }
- } else {
- throwUnexpectedToken(lex());
- }
-
- if (!matchContextualKeyword('from')) {
- throwError(lookahead.value ?
- Messages.UnexpectedToken : Messages.MissingFromClause, lookahead.value);
- }
- lex();
- src = parseModuleSpecifier();
- }
-
- consumeSemicolon();
- return node.finishImportDeclaration(specifiers, src);
- }
-
- // ECMA-262 15.1 Scripts
-
- function parseScriptBody() {
- var statement, body = [], token, directive, firstRestricted;
-
- while (startIndex < length) {
- token = lookahead;
- if (token.type !== Token.StringLiteral) {
- break;
- }
-
- statement = parseStatementListItem();
- body.push(statement);
- if (statement.expression.type !== Syntax.Literal) {
- // this is not directive
- break;
- }
- directive = source.slice(token.start + 1, token.end - 1);
- if (directive === 'use strict') {
- strict = true;
- if (firstRestricted) {
- tolerateUnexpectedToken(firstRestricted, Messages.StrictOctalLiteral);
- }
- } else {
- if (!firstRestricted && token.octal) {
- firstRestricted = token;
- }
- }
- }
-
- while (startIndex < length) {
- statement = parseStatementListItem();
- /* istanbul ignore if */
- if (typeof statement === 'undefined') {
- break;
- }
- body.push(statement);
- }
- return body;
- }
-
- function parseProgram() {
- var body, node;
-
- peek();
- node = new Node();
-
- body = parseScriptBody();
- return node.finishProgram(body, state.sourceType);
- }
-
- function filterTokenLocation() {
- var i, entry, token, tokens = [];
-
- for (i = 0; i < extra.tokens.length; ++i) {
- entry = extra.tokens[i];
- token = {
- type: entry.type,
- value: entry.value
- };
- if (entry.regex) {
- token.regex = {
- pattern: entry.regex.pattern,
- flags: entry.regex.flags
- };
- }
- if (extra.range) {
- token.range = entry.range;
- }
- if (extra.loc) {
- token.loc = entry.loc;
- }
- tokens.push(token);
- }
-
- extra.tokens = tokens;
- }
-
- function tokenize(code, options, delegate) {
- var toString,
- tokens;
-
- toString = String;
- if (typeof code !== 'string' && !(code instanceof String)) {
- code = toString(code);
- }
-
- source = code;
- index = 0;
- lineNumber = (source.length > 0) ? 1 : 0;
- lineStart = 0;
- startIndex = index;
- startLineNumber = lineNumber;
- startLineStart = lineStart;
- length = source.length;
- lookahead = null;
- state = {
- allowIn: true,
- allowYield: true,
- labelSet: {},
- inFunctionBody: false,
- inIteration: false,
- inSwitch: false,
- lastCommentStart: -1,
- curlyStack: []
- };
-
- extra = {};
-
- // Options matching.
- options = options || {};
-
- // Of course we collect tokens here.
- options.tokens = true;
- extra.tokens = [];
- extra.tokenValues = [];
- extra.tokenize = true;
- extra.delegate = delegate;
-
- // The following two fields are necessary to compute the Regex tokens.
- extra.openParenToken = -1;
- extra.openCurlyToken = -1;
-
- extra.range = (typeof options.range === 'boolean') && options.range;
- extra.loc = (typeof options.loc === 'boolean') && options.loc;
-
- if (typeof options.comment === 'boolean' && options.comment) {
- extra.comments = [];
- }
- if (typeof options.tolerant === 'boolean' && options.tolerant) {
- extra.errors = [];
- }
-
- try {
- peek();
- if (lookahead.type === Token.EOF) {
- return extra.tokens;
- }
-
- lex();
- while (lookahead.type !== Token.EOF) {
- try {
- lex();
- } catch (lexError) {
- if (extra.errors) {
- recordError(lexError);
- // We have to break on the first error
- // to avoid infinite loops.
- break;
- } else {
- throw lexError;
- }
- }
- }
-
- tokens = extra.tokens;
- if (typeof extra.errors !== 'undefined') {
- tokens.errors = extra.errors;
- }
- } catch (e) {
- throw e;
- } finally {
- extra = {};
- }
- return tokens;
- }
-
- function parse(code, options) {
- var program, toString;
-
- toString = String;
- if (typeof code !== 'string' && !(code instanceof String)) {
- code = toString(code);
- }
-
- source = code;
- index = 0;
- lineNumber = (source.length > 0) ? 1 : 0;
- lineStart = 0;
- startIndex = index;
- startLineNumber = lineNumber;
- startLineStart = lineStart;
- length = source.length;
- lookahead = null;
- state = {
- allowIn: true,
- allowYield: true,
- labelSet: {},
- inFunctionBody: false,
- inIteration: false,
- inSwitch: false,
- lastCommentStart: -1,
- curlyStack: [],
- sourceType: 'script'
- };
- strict = false;
-
- extra = {};
- if (typeof options !== 'undefined') {
- extra.range = (typeof options.range === 'boolean') && options.range;
- extra.loc = (typeof options.loc === 'boolean') && options.loc;
- extra.attachComment = (typeof options.attachComment === 'boolean') && options.attachComment;
-
- if (extra.loc && options.source !== null && options.source !== undefined) {
- extra.source = toString(options.source);
- }
-
- if (typeof options.tokens === 'boolean' && options.tokens) {
- extra.tokens = [];
- }
- if (typeof options.comment === 'boolean' && options.comment) {
- extra.comments = [];
- }
- if (typeof options.tolerant === 'boolean' && options.tolerant) {
- extra.errors = [];
- }
- if (extra.attachComment) {
- extra.range = true;
- extra.comments = [];
- extra.bottomRightStack = [];
- extra.trailingComments = [];
- extra.leadingComments = [];
- }
- if (options.sourceType === 'module') {
- // very restrictive condition for now
- state.sourceType = options.sourceType;
- strict = true;
- }
- }
-
- try {
- program = parseProgram();
- if (typeof extra.comments !== 'undefined') {
- program.comments = extra.comments;
- }
- if (typeof extra.tokens !== 'undefined') {
- filterTokenLocation();
- program.tokens = extra.tokens;
- }
- if (typeof extra.errors !== 'undefined') {
- program.errors = extra.errors;
- }
- } catch (e) {
- throw e;
- } finally {
- extra = {};
- }
-
- return program;
- }
-
- // Sync with *.json manifests.
- exports.version = '2.7.3';
-
- exports.tokenize = tokenize;
-
- exports.parse = parse;
-
- // Deep copy.
- /* istanbul ignore next */
- exports.Syntax = (function () {
- var name, types = {};
-
- if (typeof Object.create === 'function') {
- types = Object.create(null);
- }
-
- for (name in Syntax) {
- if (Syntax.hasOwnProperty(name)) {
- types[name] = Syntax[name];
- }
- }
-
- if (typeof Object.freeze === 'function') {
- Object.freeze(types);
- }
-
- return types;
- }());
-
-}));
-/* vim: set sw=4 ts=4 et tw=80 : */
diff --git a/node_modules/esprima/package.json b/node_modules/esprima/package.json
index f2d591202..4ce474ddf 100644
--- a/node_modules/esprima/package.json
+++ b/node_modules/esprima/package.json
@@ -2,19 +2,18 @@
"name": "esprima",
"description": "ECMAScript parsing infrastructure for multipurpose analysis",
"homepage": "http://esprima.org",
- "main": "esprima.js",
+ "main": "dist/esprima.js",
"bin": {
"esparse": "./bin/esparse.js",
"esvalidate": "./bin/esvalidate.js"
},
- "version": "2.7.3",
+ "version": "3.1.3",
"files": [
"bin",
- "unit-tests.js",
- "esprima.js"
+ "dist/esprima.js"
],
"engines": {
- "node": ">=0.10.0"
+ "node": ">=4"
},
"author": {
"name": "Ariya Hidayat",
@@ -38,62 +37,73 @@
"devDependencies": {
"codecov.io": "~0.1.6",
"escomplex-js": "1.2.0",
- "eslint": "~1.7.2",
"everything.js": "~1.0.3",
- "glob": "^5.0.15",
+ "glob": "~7.1.0",
"istanbul": "~0.4.0",
- "jscs": "~2.3.5",
"json-diff": "~0.3.1",
- "karma": "^0.13.11",
- "karma-chrome-launcher": "^0.2.1",
- "karma-detect-browsers": "^2.0.2",
- "karma-firefox-launcher": "^0.1.6",
- "karma-ie-launcher": "^0.2.0",
- "karma-mocha": "^0.2.0",
- "karma-safari-launcher": "^0.1.1",
- "karma-sauce-launcher": "^0.2.14",
- "lodash": "^3.10.0",
- "mocha": "^2.3.3",
+ "karma": "~1.3.0",
+ "karma-chrome-launcher": "~2.0.0",
+ "karma-detect-browsers": "~2.1.0",
+ "karma-firefox-launcher": "~1.0.0",
+ "karma-ie-launcher": "~1.0.0",
+ "karma-mocha": "~1.2.0",
+ "karma-safari-launcher": "~1.0.0",
+ "karma-sauce-launcher": "~1.0.0",
+ "lodash": "~3.10.1",
+ "mocha": "~3.1.0",
"node-tick-processor": "~0.0.2",
- "regenerate": "~1.2.1",
+ "regenerate": "~1.3.1",
"temp": "~0.8.3",
- "unicode-7.0.0": "~0.1.5"
+ "tslint": "~3.15.1",
+ "typescript": "~1.8.10",
+ "typescript-formatter": "~2.3.0",
+ "unicode-8.0.0": "~0.7.0",
+ "webpack": "~1.13.2"
},
"keywords": [
"ast",
"ecmascript",
+ "esprima",
"javascript",
"parser",
"syntax"
],
"scripts": {
"check-version": "node test/check-version.js",
- "jscs": "jscs -p crockford esprima.js && jscs -p crockford test/*.js",
- "eslint": "node node_modules/eslint/bin/eslint.js -c .lintrc esprima.js",
+ "tslint": "tslint src/*.ts",
+ "code-style": "tsfmt --verify src/*.ts && tsfmt --verify test/*.js",
+ "format-code": "tsfmt -r src/*.ts && tsfmt -r test/*.js",
"complexity": "node test/check-complexity.js",
- "static-analysis": "npm run check-version && npm run jscs && npm run eslint && npm run complexity",
+ "static-analysis": "npm run check-version && npm run tslint && npm run code-style && npm run complexity",
+ "hostile-env-tests": "node test/hostile-environment-tests.js",
"unit-tests": "node test/unit-tests.js",
+ "api-tests": "mocha -R dot test/api-tests.js",
"grammar-tests": "node test/grammar-tests.js",
"regression-tests": "node test/regression-tests.js",
- "all-tests": "npm run generate-fixtures && npm run unit-tests && npm run grammar-tests && npm run regression-tests",
+ "all-tests": "npm run generate-fixtures && npm run unit-tests && npm run api-tests && npm run grammar-tests && npm run regression-tests && npm run hostile-env-tests",
"generate-fixtures": "node tools/generate-fixtures.js",
- "browser-tests": "npm run generate-fixtures && cd test && karma start --single-run",
+ "browser-tests": "npm run compile && npm run generate-fixtures && cd test && karma start --single-run",
"saucelabs-evergreen": "cd test && karma start saucelabs-evergreen.conf.js",
"saucelabs-safari": "cd test && karma start saucelabs-safari.conf.js",
"saucelabs-ie": "cd test && karma start saucelabs-ie.conf.js",
+ "saucelabs": "npm run saucelabs-evergreen && npm run saucelabs-ie && npm run saucelabs-safari",
"analyze-coverage": "istanbul cover test/unit-tests.js",
"check-coverage": "istanbul check-coverage --statement 100 --branch 100 --function 100",
"dynamic-analysis": "npm run analyze-coverage && npm run check-coverage",
- "test": "npm run all-tests && npm run static-analysis && npm run dynamic-analysis",
+ "compile": "tsc -p src/ && webpack && node tools/fixupbundle.js",
+ "test": "npm run compile && npm run all-tests && npm run static-analysis && npm run dynamic-analysis",
+ "prepublish": "npm run compile",
"profile": "node --prof test/profile.js && mv isolate*.log v8.log && node-tick-processor",
- "benchmark": "node test/benchmarks.js",
- "benchmark-quick": "node test/benchmarks.js quick",
+ "benchmark-parser": "node -expose_gc test/benchmark-parser.js",
+ "benchmark-tokenizer": "node --expose_gc test/benchmark-tokenizer.js",
+ "benchmark": "npm run benchmark-parser && npm run benchmark-tokenizer",
"codecov" : "istanbul report cobertura && codecov < ./coverage/cobertura-coverage.xml",
"downstream": "node test/downstream.js",
"travis": "npm test",
"circleci": "npm test && npm run codecov && npm run downstream",
- "appveyor": "npm run all-tests && npm run browser-tests && npm run dynamic-analysis",
- "droneio": "npm test && npm run saucelabs-evergreen && npm run saucelabs-ie && npm run saucelabs-safari",
- "generate-regex": "node tools/generate-identifier-regex.js"
+ "appveyor": "npm run compile && npm run all-tests && npm run browser-tests",
+ "droneio": "npm run compile && npm run all-tests && npm run saucelabs",
+ "generate-regex": "node tools/generate-identifier-regex.js",
+ "generate-xhtml-entities": "node tools/generate-xhtml-entities.js"
}
}
generated by cgit v1.2.3 (git 2.26.2) at 2024-07-16 19:07:12 +0000