diff options
Diffstat (limited to 'node_modules/babel-traverse/lib/path/introspection.js')
| -rw-r--r-- | node_modules/babel-traverse/lib/path/introspection.js | 400 |
1 files changed, 400 insertions, 0 deletions
diff --git a/node_modules/babel-traverse/lib/path/introspection.js b/node_modules/babel-traverse/lib/path/introspection.js new file mode 100644 index 000000000..a84f9d219 --- /dev/null +++ b/node_modules/babel-traverse/lib/path/introspection.js @@ -0,0 +1,400 @@ +"use strict"; + +exports.__esModule = true; +exports.is = undefined; + +var _typeof2 = require("babel-runtime/helpers/typeof"); + +var _typeof3 = _interopRequireDefault(_typeof2); + +var _getIterator2 = require("babel-runtime/core-js/get-iterator"); + +var _getIterator3 = _interopRequireDefault(_getIterator2); + +exports.matchesPattern = matchesPattern; +exports.has = has; +exports.isStatic = isStatic; +exports.isnt = isnt; +exports.equals = equals; +exports.isNodeType = isNodeType; +exports.canHaveVariableDeclarationOrExpression = canHaveVariableDeclarationOrExpression; +exports.canSwapBetweenExpressionAndStatement = canSwapBetweenExpressionAndStatement; +exports.isCompletionRecord = isCompletionRecord; +exports.isStatementOrBlock = isStatementOrBlock; +exports.referencesImport = referencesImport; +exports.getSource = getSource; +exports.willIMaybeExecuteBefore = willIMaybeExecuteBefore; +exports._guessExecutionStatusRelativeTo = _guessExecutionStatusRelativeTo; +exports._guessExecutionStatusRelativeToDifferentFunctions = _guessExecutionStatusRelativeToDifferentFunctions; +exports.resolve = resolve; +exports._resolve = _resolve; + +var _includes = require("lodash/includes"); + +var _includes2 = _interopRequireDefault(_includes); + +var _babelTypes = require("babel-types"); + +var t = _interopRequireWildcard(_babelTypes); + +function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } } + +function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } + +function matchesPattern(pattern, allowPartial) { + if (!this.isMemberExpression()) return false; + + var parts = pattern.split("."); + var search = [this.node]; + var i = 0; + + function matches(name) { + var part = parts[i]; + return part === "*" || name === part; + } + + while (search.length) { + var node = search.shift(); + + if (allowPartial && i === parts.length) { + return true; + } + + if (t.isIdentifier(node)) { + if (!matches(node.name)) return false; + } else if (t.isLiteral(node)) { + if (!matches(node.value)) return false; + } else if (t.isMemberExpression(node)) { + if (node.computed && !t.isLiteral(node.property)) { + return false; + } else { + search.unshift(node.property); + search.unshift(node.object); + continue; + } + } else if (t.isThisExpression(node)) { + if (!matches("this")) return false; + } else { + return false; + } + + if (++i > parts.length) { + return false; + } + } + + return i === parts.length; +} + +function has(key) { + var val = this.node && this.node[key]; + if (val && Array.isArray(val)) { + return !!val.length; + } else { + return !!val; + } +} + +function isStatic() { + return this.scope.isStatic(this.node); +} + +var is = exports.is = has; + +function isnt(key) { + return !this.has(key); +} + +function equals(key, value) { + return this.node[key] === value; +} + +function isNodeType(type) { + return t.isType(this.type, type); +} + +function canHaveVariableDeclarationOrExpression() { + return (this.key === "init" || this.key === "left") && this.parentPath.isFor(); +} + +function canSwapBetweenExpressionAndStatement(replacement) { + if (this.key !== "body" || !this.parentPath.isArrowFunctionExpression()) { + return false; + } + + if (this.isExpression()) { + return t.isBlockStatement(replacement); + } else if (this.isBlockStatement()) { + return t.isExpression(replacement); + } + + return false; +} + +function isCompletionRecord(allowInsideFunction) { + var path = this; + var first = true; + + do { + var container = path.container; + + if (path.isFunction() && !first) { + return !!allowInsideFunction; + } + + first = false; + + if (Array.isArray(container) && path.key !== container.length - 1) { + return false; + } + } while ((path = path.parentPath) && !path.isProgram()); + + return true; +} + +function isStatementOrBlock() { + if (this.parentPath.isLabeledStatement() || t.isBlockStatement(this.container)) { + return false; + } else { + return (0, _includes2.default)(t.STATEMENT_OR_BLOCK_KEYS, this.key); + } +} + +function referencesImport(moduleSource, importName) { + if (!this.isReferencedIdentifier()) return false; + + var binding = this.scope.getBinding(this.node.name); + if (!binding || binding.kind !== "module") return false; + + var path = binding.path; + var parent = path.parentPath; + if (!parent.isImportDeclaration()) return false; + + if (parent.node.source.value === moduleSource) { + if (!importName) return true; + } else { + return false; + } + + if (path.isImportDefaultSpecifier() && importName === "default") { + return true; + } + + if (path.isImportNamespaceSpecifier() && importName === "*") { + return true; + } + + if (path.isImportSpecifier() && path.node.imported.name === importName) { + return true; + } + + return false; +} + +function getSource() { + var node = this.node; + if (node.end) { + return this.hub.file.code.slice(node.start, node.end); + } else { + return ""; + } +} + +function willIMaybeExecuteBefore(target) { + return this._guessExecutionStatusRelativeTo(target) !== "after"; +} + +function _guessExecutionStatusRelativeTo(target) { + var targetFuncParent = target.scope.getFunctionParent(); + var selfFuncParent = this.scope.getFunctionParent(); + + if (targetFuncParent.node !== selfFuncParent.node) { + var status = this._guessExecutionStatusRelativeToDifferentFunctions(targetFuncParent); + if (status) { + return status; + } else { + target = targetFuncParent.path; + } + } + + var targetPaths = target.getAncestry(); + if (targetPaths.indexOf(this) >= 0) return "after"; + + var selfPaths = this.getAncestry(); + + var commonPath = void 0; + var targetIndex = void 0; + var selfIndex = void 0; + for (selfIndex = 0; selfIndex < selfPaths.length; selfIndex++) { + var selfPath = selfPaths[selfIndex]; + targetIndex = targetPaths.indexOf(selfPath); + if (targetIndex >= 0) { + commonPath = selfPath; + break; + } + } + if (!commonPath) { + return "before"; + } + + var targetRelationship = targetPaths[targetIndex - 1]; + var selfRelationship = selfPaths[selfIndex - 1]; + if (!targetRelationship || !selfRelationship) { + return "before"; + } + + if (targetRelationship.listKey && targetRelationship.container === selfRelationship.container) { + return targetRelationship.key > selfRelationship.key ? "before" : "after"; + } + + var targetKeyPosition = t.VISITOR_KEYS[targetRelationship.type].indexOf(targetRelationship.key); + var selfKeyPosition = t.VISITOR_KEYS[selfRelationship.type].indexOf(selfRelationship.key); + return targetKeyPosition > selfKeyPosition ? "before" : "after"; +} + +function _guessExecutionStatusRelativeToDifferentFunctions(targetFuncParent) { + var targetFuncPath = targetFuncParent.path; + if (!targetFuncPath.isFunctionDeclaration()) return; + + var binding = targetFuncPath.scope.getBinding(targetFuncPath.node.id.name); + + if (!binding.references) return "before"; + + var referencePaths = binding.referencePaths; + + for (var _iterator = referencePaths, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : (0, _getIterator3.default)(_iterator);;) { + var _ref; + + if (_isArray) { + if (_i >= _iterator.length) break; + _ref = _iterator[_i++]; + } else { + _i = _iterator.next(); + if (_i.done) break; + _ref = _i.value; + } + + var path = _ref; + + if (path.key !== "callee" || !path.parentPath.isCallExpression()) { + return; + } + } + + var allStatus = void 0; + + for (var _iterator2 = referencePaths, _isArray2 = Array.isArray(_iterator2), _i2 = 0, _iterator2 = _isArray2 ? _iterator2 : (0, _getIterator3.default)(_iterator2);;) { + var _ref2; + + if (_isArray2) { + if (_i2 >= _iterator2.length) break; + _ref2 = _iterator2[_i2++]; + } else { + _i2 = _iterator2.next(); + if (_i2.done) break; + _ref2 = _i2.value; + } + + var _path = _ref2; + + var childOfFunction = !!_path.find(function (path) { + return path.node === targetFuncPath.node; + }); + if (childOfFunction) continue; + + var status = this._guessExecutionStatusRelativeTo(_path); + + if (allStatus) { + if (allStatus !== status) return; + } else { + allStatus = status; + } + } + + return allStatus; +} + +function resolve(dangerous, resolved) { + return this._resolve(dangerous, resolved) || this; +} + +function _resolve(dangerous, resolved) { + var _this = this; + + if (resolved && resolved.indexOf(this) >= 0) return; + + resolved = resolved || []; + resolved.push(this); + + if (this.isVariableDeclarator()) { + if (this.get("id").isIdentifier()) { + return this.get("init").resolve(dangerous, resolved); + } else {} + } else if (this.isReferencedIdentifier()) { + var binding = this.scope.getBinding(this.node.name); + if (!binding) return; + + if (!binding.constant) return; + + if (binding.kind === "module") return; + + if (binding.path !== this) { + var _ret = function () { + var ret = binding.path.resolve(dangerous, resolved); + + if (_this.find(function (parent) { + return parent.node === ret.node; + })) return { + v: void 0 + }; + return { + v: ret + }; + }(); + + if ((typeof _ret === "undefined" ? "undefined" : (0, _typeof3.default)(_ret)) === "object") return _ret.v; + } + } else if (this.isTypeCastExpression()) { + return this.get("expression").resolve(dangerous, resolved); + } else if (dangerous && this.isMemberExpression()) { + + var targetKey = this.toComputedKey(); + if (!t.isLiteral(targetKey)) return; + + var targetName = targetKey.value; + + var target = this.get("object").resolve(dangerous, resolved); + + if (target.isObjectExpression()) { + var props = target.get("properties"); + for (var _iterator3 = props, _isArray3 = Array.isArray(_iterator3), _i3 = 0, _iterator3 = _isArray3 ? _iterator3 : (0, _getIterator3.default)(_iterator3);;) { + var _ref3; + + if (_isArray3) { + if (_i3 >= _iterator3.length) break; + _ref3 = _iterator3[_i3++]; + } else { + _i3 = _iterator3.next(); + if (_i3.done) break; + _ref3 = _i3.value; + } + + var prop = _ref3; + + if (!prop.isProperty()) continue; + + var key = prop.get("key"); + + var match = prop.isnt("computed") && key.isIdentifier({ name: targetName }); + + match = match || key.isLiteral({ value: targetName }); + + if (match) return prop.get("value").resolve(dangerous, resolved); + } + } else if (target.isArrayExpression() && !isNaN(+targetName)) { + var elems = target.get("elements"); + var elem = elems[targetName]; + if (elem) return elem.resolve(dangerous, resolved); + } + } +}
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