diff options
Diffstat (limited to 'node_modules/babel-traverse/lib/path/replacement.js')
| -rw-r--r-- | node_modules/babel-traverse/lib/path/replacement.js | 262 |
1 files changed, 262 insertions, 0 deletions
diff --git a/node_modules/babel-traverse/lib/path/replacement.js b/node_modules/babel-traverse/lib/path/replacement.js new file mode 100644 index 000000000..dc852334d --- /dev/null +++ b/node_modules/babel-traverse/lib/path/replacement.js @@ -0,0 +1,262 @@ +"use strict"; + +exports.__esModule = true; + +var _getIterator2 = require("babel-runtime/core-js/get-iterator"); + +var _getIterator3 = _interopRequireDefault(_getIterator2); + +exports.replaceWithMultiple = replaceWithMultiple; +exports.replaceWithSourceString = replaceWithSourceString; +exports.replaceWith = replaceWith; +exports._replaceWith = _replaceWith; +exports.replaceExpressionWithStatements = replaceExpressionWithStatements; +exports.replaceInline = replaceInline; + +var _babelCodeFrame = require("babel-code-frame"); + +var _babelCodeFrame2 = _interopRequireDefault(_babelCodeFrame); + +var _index = require("../index"); + +var _index2 = _interopRequireDefault(_index); + +var _index3 = require("./index"); + +var _index4 = _interopRequireDefault(_index3); + +var _babylon = require("babylon"); + +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 }; } + +var hoistVariablesVisitor = { + Function: function Function(path) { + path.skip(); + }, + VariableDeclaration: function VariableDeclaration(path) { + if (path.node.kind !== "var") return; + + var bindings = path.getBindingIdentifiers(); + for (var key in bindings) { + path.scope.push({ id: bindings[key] }); + } + + var exprs = []; + + for (var _iterator = path.node.declarations, _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 declar = _ref; + + if (declar.init) { + exprs.push(t.expressionStatement(t.assignmentExpression("=", declar.id, declar.init))); + } + } + + path.replaceWithMultiple(exprs); + } +}; + +function replaceWithMultiple(nodes) { + this.resync(); + + nodes = this._verifyNodeList(nodes); + t.inheritLeadingComments(nodes[0], this.node); + t.inheritTrailingComments(nodes[nodes.length - 1], this.node); + this.node = this.container[this.key] = null; + this.insertAfter(nodes); + + if (this.node) { + this.requeue(); + } else { + this.remove(); + } +} + +function replaceWithSourceString(replacement) { + this.resync(); + + try { + replacement = "(" + replacement + ")"; + replacement = (0, _babylon.parse)(replacement); + } catch (err) { + var loc = err.loc; + if (loc) { + err.message += " - make sure this is an expression."; + err.message += "\n" + (0, _babelCodeFrame2.default)(replacement, loc.line, loc.column + 1); + } + throw err; + } + + replacement = replacement.program.body[0].expression; + _index2.default.removeProperties(replacement); + return this.replaceWith(replacement); +} + +function replaceWith(replacement) { + this.resync(); + + if (this.removed) { + throw new Error("You can't replace this node, we've already removed it"); + } + + if (replacement instanceof _index4.default) { + replacement = replacement.node; + } + + if (!replacement) { + throw new Error("You passed `path.replaceWith()` a falsy node, use `path.remove()` instead"); + } + + if (this.node === replacement) { + return; + } + + if (this.isProgram() && !t.isProgram(replacement)) { + throw new Error("You can only replace a Program root node with another Program node"); + } + + if (Array.isArray(replacement)) { + throw new Error("Don't use `path.replaceWith()` with an array of nodes, use `path.replaceWithMultiple()`"); + } + + if (typeof replacement === "string") { + throw new Error("Don't use `path.replaceWith()` with a source string, use `path.replaceWithSourceString()`"); + } + + if (this.isNodeType("Statement") && t.isExpression(replacement)) { + if (!this.canHaveVariableDeclarationOrExpression() && !this.canSwapBetweenExpressionAndStatement(replacement)) { + replacement = t.expressionStatement(replacement); + } + } + + if (this.isNodeType("Expression") && t.isStatement(replacement)) { + if (!this.canHaveVariableDeclarationOrExpression() && !this.canSwapBetweenExpressionAndStatement(replacement)) { + return this.replaceExpressionWithStatements([replacement]); + } + } + + var oldNode = this.node; + if (oldNode) { + t.inheritsComments(replacement, oldNode); + t.removeComments(oldNode); + } + + this._replaceWith(replacement); + this.type = replacement.type; + + this.setScope(); + + this.requeue(); +} + +function _replaceWith(node) { + if (!this.container) { + throw new ReferenceError("Container is falsy"); + } + + if (this.inList) { + t.validate(this.parent, this.key, [node]); + } else { + t.validate(this.parent, this.key, node); + } + + this.debug(function () { + return "Replace with " + (node && node.type); + }); + + this.node = this.container[this.key] = node; +} + +function replaceExpressionWithStatements(nodes) { + this.resync(); + + var toSequenceExpression = t.toSequenceExpression(nodes, this.scope); + + if (t.isSequenceExpression(toSequenceExpression)) { + var exprs = toSequenceExpression.expressions; + + if (exprs.length >= 2 && this.parentPath.isExpressionStatement()) { + this._maybePopFromStatements(exprs); + } + + if (exprs.length === 1) { + this.replaceWith(exprs[0]); + } else { + this.replaceWith(toSequenceExpression); + } + } else if (toSequenceExpression) { + this.replaceWith(toSequenceExpression); + } else { + var container = t.functionExpression(null, [], t.blockStatement(nodes)); + container.shadow = true; + + this.replaceWith(t.callExpression(container, [])); + this.traverse(hoistVariablesVisitor); + + var completionRecords = this.get("callee").getCompletionRecords(); + for (var _iterator2 = completionRecords, _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; + + if (!path.isExpressionStatement()) continue; + + var loop = path.findParent(function (path) { + return path.isLoop(); + }); + if (loop) { + var callee = this.get("callee"); + + var uid = callee.scope.generateDeclaredUidIdentifier("ret"); + callee.get("body").pushContainer("body", t.returnStatement(uid)); + + path.get("expression").replaceWith(t.assignmentExpression("=", uid, path.node.expression)); + } else { + path.replaceWith(t.returnStatement(path.node.expression)); + } + } + + return this.node; + } +} + +function replaceInline(nodes) { + this.resync(); + + if (Array.isArray(nodes)) { + if (Array.isArray(this.container)) { + nodes = this._verifyNodeList(nodes); + this._containerInsertAfter(nodes); + return this.remove(); + } else { + return this.replaceWithMultiple(nodes); + } + } else { + return this.replaceWith(nodes); + } +}
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