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- (function (global, factory) {
- typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('./acorn')) :
- typeof define === 'function' && define.amd ? define(['exports', './acorn'], factory) :
- (factory((global.acorn = global.acorn || {}, global.acorn.loose = global.acorn.loose || {}),global.acorn));
- }(this, (function (exports,__acorn) { 'use strict';
- // Registered plugins
- var pluginsLoose = {}
- var LooseParser = function LooseParser(input, options) {
- if ( options === void 0 ) options = {};
- this.toks = __acorn.tokenizer(input, options)
- this.options = this.toks.options
- this.input = this.toks.input
- this.tok = this.last = {type: __acorn.tokTypes.eof, start: 0, end: 0}
- if (this.options.locations) {
- var here = this.toks.curPosition()
- this.tok.loc = new __acorn.SourceLocation(this.toks, here, here)
- }
- this.ahead = [] // Tokens ahead
- this.context = [] // Indentation contexted
- this.curIndent = 0
- this.curLineStart = 0
- this.nextLineStart = this.lineEnd(this.curLineStart) + 1
- this.inAsync = false
- // Load plugins
- this.options.pluginsLoose = options.pluginsLoose || {}
- this.loadPlugins(this.options.pluginsLoose)
- };
- LooseParser.prototype.startNode = function startNode () {
- return new __acorn.Node(this.toks, this.tok.start, this.options.locations ? this.tok.loc.start : null)
- };
- LooseParser.prototype.storeCurrentPos = function storeCurrentPos () {
- return this.options.locations ? [this.tok.start, this.tok.loc.start] : this.tok.start
- };
- LooseParser.prototype.startNodeAt = function startNodeAt (pos) {
- if (this.options.locations) {
- return new __acorn.Node(this.toks, pos[0], pos[1])
- } else {
- return new __acorn.Node(this.toks, pos)
- }
- };
- LooseParser.prototype.finishNode = function finishNode (node, type) {
- node.type = type
- node.end = this.last.end
- if (this.options.locations)
- node.loc.end = this.last.loc.end
- if (this.options.ranges)
- node.range[1] = this.last.end
- return node
- };
- LooseParser.prototype.dummyNode = function dummyNode (type) {
- var dummy = this.startNode()
- dummy.type = type
- dummy.end = dummy.start
- if (this.options.locations)
- dummy.loc.end = dummy.loc.start
- if (this.options.ranges)
- dummy.range[1] = dummy.start
- this.last = {type: __acorn.tokTypes.name, start: dummy.start, end: dummy.start, loc: dummy.loc}
- return dummy
- };
- LooseParser.prototype.dummyIdent = function dummyIdent () {
- var dummy = this.dummyNode("Identifier")
- dummy.name = "✖"
- return dummy
- };
- LooseParser.prototype.dummyString = function dummyString () {
- var dummy = this.dummyNode("Literal")
- dummy.value = dummy.raw = "✖"
- return dummy
- };
- LooseParser.prototype.eat = function eat (type) {
- if (this.tok.type === type) {
- this.next()
- return true
- } else {
- return false
- }
- };
- LooseParser.prototype.isContextual = function isContextual (name) {
- return this.tok.type === __acorn.tokTypes.name && this.tok.value === name
- };
- LooseParser.prototype.eatContextual = function eatContextual (name) {
- return this.tok.value === name && this.eat(__acorn.tokTypes.name)
- };
- LooseParser.prototype.canInsertSemicolon = function canInsertSemicolon () {
- return this.tok.type === __acorn.tokTypes.eof || this.tok.type === __acorn.tokTypes.braceR ||
- __acorn.lineBreak.test(this.input.slice(this.last.end, this.tok.start))
- };
- LooseParser.prototype.semicolon = function semicolon () {
- return this.eat(__acorn.tokTypes.semi)
- };
- LooseParser.prototype.expect = function expect (type) {
- var this$1 = this;
- if (this.eat(type)) return true
- for (var i = 1; i <= 2; i++) {
- if (this$1.lookAhead(i).type == type) {
- for (var j = 0; j < i; j++) this$1.next()
- return true
- }
- }
- };
- LooseParser.prototype.pushCx = function pushCx () {
- this.context.push(this.curIndent)
- };
- LooseParser.prototype.popCx = function popCx () {
- this.curIndent = this.context.pop()
- };
- LooseParser.prototype.lineEnd = function lineEnd (pos) {
- while (pos < this.input.length && !__acorn.isNewLine(this.input.charCodeAt(pos))) ++pos
- return pos
- };
- LooseParser.prototype.indentationAfter = function indentationAfter (pos) {
- var this$1 = this;
- for (var count = 0;; ++pos) {
- var ch = this$1.input.charCodeAt(pos)
- if (ch === 32) ++count
- else if (ch === 9) count += this$1.options.tabSize
- else return count
- }
- };
- LooseParser.prototype.closes = function closes (closeTok, indent, line, blockHeuristic) {
- if (this.tok.type === closeTok || this.tok.type === __acorn.tokTypes.eof) return true
- return line != this.curLineStart && this.curIndent < indent && this.tokenStartsLine() &&
- (!blockHeuristic || this.nextLineStart >= this.input.length ||
- this.indentationAfter(this.nextLineStart) < indent)
- };
- LooseParser.prototype.tokenStartsLine = function tokenStartsLine () {
- var this$1 = this;
- for (var p = this.tok.start - 1; p >= this.curLineStart; --p) {
- var ch = this$1.input.charCodeAt(p)
- if (ch !== 9 && ch !== 32) return false
- }
- return true
- };
- LooseParser.prototype.extend = function extend (name, f) {
- this[name] = f(this[name])
- };
- LooseParser.prototype.loadPlugins = function loadPlugins (pluginConfigs) {
- var this$1 = this;
- for (var name in pluginConfigs) {
- var plugin = pluginsLoose[name]
- if (!plugin) throw new Error("Plugin '" + name + "' not found")
- plugin(this$1, pluginConfigs[name])
- }
- };
- var lp = LooseParser.prototype
- function isSpace(ch) {
- return (ch < 14 && ch > 8) || ch === 32 || ch === 160 || __acorn.isNewLine(ch)
- }
- lp.next = function() {
- var this$1 = this;
- this.last = this.tok
- if (this.ahead.length)
- this.tok = this.ahead.shift()
- else
- this.tok = this.readToken()
- if (this.tok.start >= this.nextLineStart) {
- while (this.tok.start >= this.nextLineStart) {
- this$1.curLineStart = this$1.nextLineStart
- this$1.nextLineStart = this$1.lineEnd(this$1.curLineStart) + 1
- }
- this.curIndent = this.indentationAfter(this.curLineStart)
- }
- }
- lp.readToken = function() {
- var this$1 = this;
- for (;;) {
- try {
- this$1.toks.next()
- if (this$1.toks.type === __acorn.tokTypes.dot &&
- this$1.input.substr(this$1.toks.end, 1) === "." &&
- this$1.options.ecmaVersion >= 6) {
- this$1.toks.end++
- this$1.toks.type = __acorn.tokTypes.ellipsis
- }
- return new __acorn.Token(this$1.toks)
- } catch(e) {
- if (!(e instanceof SyntaxError)) throw e
- // Try to skip some text, based on the error message, and then continue
- var msg = e.message, pos = e.raisedAt, replace = true
- if (/unterminated/i.test(msg)) {
- pos = this$1.lineEnd(e.pos + 1)
- if (/string/.test(msg)) {
- replace = {start: e.pos, end: pos, type: __acorn.tokTypes.string, value: this$1.input.slice(e.pos + 1, pos)}
- } else if (/regular expr/i.test(msg)) {
- var re = this$1.input.slice(e.pos, pos)
- try { re = new RegExp(re) } catch(e) {}
- replace = {start: e.pos, end: pos, type: __acorn.tokTypes.regexp, value: re}
- } else if (/template/.test(msg)) {
- replace = {start: e.pos, end: pos,
- type: __acorn.tokTypes.template,
- value: this$1.input.slice(e.pos, pos)}
- } else {
- replace = false
- }
- } else if (/invalid (unicode|regexp|number)|expecting unicode|octal literal|is reserved|directly after number|expected number in radix/i.test(msg)) {
- while (pos < this.input.length && !isSpace(this.input.charCodeAt(pos))) ++pos
- } else if (/character escape|expected hexadecimal/i.test(msg)) {
- while (pos < this.input.length) {
- var ch = this$1.input.charCodeAt(pos++)
- if (ch === 34 || ch === 39 || __acorn.isNewLine(ch)) break
- }
- } else if (/unexpected character/i.test(msg)) {
- pos++
- replace = false
- } else if (/regular expression/i.test(msg)) {
- replace = true
- } else {
- throw e
- }
- this$1.resetTo(pos)
- if (replace === true) replace = {start: pos, end: pos, type: __acorn.tokTypes.name, value: "✖"}
- if (replace) {
- if (this$1.options.locations)
- replace.loc = new __acorn.SourceLocation(
- this$1.toks,
- __acorn.getLineInfo(this$1.input, replace.start),
- __acorn.getLineInfo(this$1.input, replace.end))
- return replace
- }
- }
- }
- }
- lp.resetTo = function(pos) {
- var this$1 = this;
- this.toks.pos = pos
- var ch = this.input.charAt(pos - 1)
- this.toks.exprAllowed = !ch || /[\[\{\(,;:?\/*=+\-~!|&%^<>]/.test(ch) ||
- /[enwfd]/.test(ch) &&
- /\b(keywords|case|else|return|throw|new|in|(instance|type)of|delete|void)$/.test(this.input.slice(pos - 10, pos))
- if (this.options.locations) {
- this.toks.curLine = 1
- this.toks.lineStart = __acorn.lineBreakG.lastIndex = 0
- var match
- while ((match = __acorn.lineBreakG.exec(this.input)) && match.index < pos) {
- ++this$1.toks.curLine
- this$1.toks.lineStart = match.index + match[0].length
- }
- }
- }
- lp.lookAhead = function(n) {
- var this$1 = this;
- while (n > this.ahead.length)
- this$1.ahead.push(this$1.readToken())
- return this.ahead[n - 1]
- }
- function isDummy(node) { return node.name == "✖" }
- var lp$1 = LooseParser.prototype
- lp$1.parseTopLevel = function() {
- var this$1 = this;
- var node = this.startNodeAt(this.options.locations ? [0, __acorn.getLineInfo(this.input, 0)] : 0)
- node.body = []
- while (this.tok.type !== __acorn.tokTypes.eof) node.body.push(this$1.parseStatement())
- this.last = this.tok
- if (this.options.ecmaVersion >= 6) {
- node.sourceType = this.options.sourceType
- }
- return this.finishNode(node, "Program")
- }
- lp$1.parseStatement = function() {
- var this$1 = this;
- var starttype = this.tok.type, node = this.startNode(), kind
- if (this.toks.isLet()) {
- starttype = __acorn.tokTypes._var
- kind = "let"
- }
- switch (starttype) {
- case __acorn.tokTypes._break: case __acorn.tokTypes._continue:
- this.next()
- var isBreak = starttype === __acorn.tokTypes._break
- if (this.semicolon() || this.canInsertSemicolon()) {
- node.label = null
- } else {
- node.label = this.tok.type === __acorn.tokTypes.name ? this.parseIdent() : null
- this.semicolon()
- }
- return this.finishNode(node, isBreak ? "BreakStatement" : "ContinueStatement")
- case __acorn.tokTypes._debugger:
- this.next()
- this.semicolon()
- return this.finishNode(node, "DebuggerStatement")
- case __acorn.tokTypes._do:
- this.next()
- node.body = this.parseStatement()
- node.test = this.eat(__acorn.tokTypes._while) ? this.parseParenExpression() : this.dummyIdent()
- this.semicolon()
- return this.finishNode(node, "DoWhileStatement")
- case __acorn.tokTypes._for:
- this.next()
- this.pushCx()
- this.expect(__acorn.tokTypes.parenL)
- if (this.tok.type === __acorn.tokTypes.semi) return this.parseFor(node, null)
- var isLet = this.toks.isLet()
- if (isLet || this.tok.type === __acorn.tokTypes._var || this.tok.type === __acorn.tokTypes._const) {
- var init$1 = this.parseVar(true, isLet ? "let" : this.tok.value)
- if (init$1.declarations.length === 1 && (this.tok.type === __acorn.tokTypes._in || this.isContextual("of"))) {
- return this.parseForIn(node, init$1)
- }
- return this.parseFor(node, init$1)
- }
- var init = this.parseExpression(true)
- if (this.tok.type === __acorn.tokTypes._in || this.isContextual("of"))
- return this.parseForIn(node, this.toAssignable(init))
- return this.parseFor(node, init)
- case __acorn.tokTypes._function:
- this.next()
- return this.parseFunction(node, true)
- case __acorn.tokTypes._if:
- this.next()
- node.test = this.parseParenExpression()
- node.consequent = this.parseStatement()
- node.alternate = this.eat(__acorn.tokTypes._else) ? this.parseStatement() : null
- return this.finishNode(node, "IfStatement")
- case __acorn.tokTypes._return:
- this.next()
- if (this.eat(__acorn.tokTypes.semi) || this.canInsertSemicolon()) node.argument = null
- else { node.argument = this.parseExpression(); this.semicolon() }
- return this.finishNode(node, "ReturnStatement")
- case __acorn.tokTypes._switch:
- var blockIndent = this.curIndent, line = this.curLineStart
- this.next()
- node.discriminant = this.parseParenExpression()
- node.cases = []
- this.pushCx()
- this.expect(__acorn.tokTypes.braceL)
- var cur
- while (!this.closes(__acorn.tokTypes.braceR, blockIndent, line, true)) {
- if (this$1.tok.type === __acorn.tokTypes._case || this$1.tok.type === __acorn.tokTypes._default) {
- var isCase = this$1.tok.type === __acorn.tokTypes._case
- if (cur) this$1.finishNode(cur, "SwitchCase")
- node.cases.push(cur = this$1.startNode())
- cur.consequent = []
- this$1.next()
- if (isCase) cur.test = this$1.parseExpression()
- else cur.test = null
- this$1.expect(__acorn.tokTypes.colon)
- } else {
- if (!cur) {
- node.cases.push(cur = this$1.startNode())
- cur.consequent = []
- cur.test = null
- }
- cur.consequent.push(this$1.parseStatement())
- }
- }
- if (cur) this.finishNode(cur, "SwitchCase")
- this.popCx()
- this.eat(__acorn.tokTypes.braceR)
- return this.finishNode(node, "SwitchStatement")
- case __acorn.tokTypes._throw:
- this.next()
- node.argument = this.parseExpression()
- this.semicolon()
- return this.finishNode(node, "ThrowStatement")
- case __acorn.tokTypes._try:
- this.next()
- node.block = this.parseBlock()
- node.handler = null
- if (this.tok.type === __acorn.tokTypes._catch) {
- var clause = this.startNode()
- this.next()
- this.expect(__acorn.tokTypes.parenL)
- clause.param = this.toAssignable(this.parseExprAtom(), true)
- this.expect(__acorn.tokTypes.parenR)
- clause.body = this.parseBlock()
- node.handler = this.finishNode(clause, "CatchClause")
- }
- node.finalizer = this.eat(__acorn.tokTypes._finally) ? this.parseBlock() : null
- if (!node.handler && !node.finalizer) return node.block
- return this.finishNode(node, "TryStatement")
- case __acorn.tokTypes._var:
- case __acorn.tokTypes._const:
- return this.parseVar(false, kind || this.tok.value)
- case __acorn.tokTypes._while:
- this.next()
- node.test = this.parseParenExpression()
- node.body = this.parseStatement()
- return this.finishNode(node, "WhileStatement")
- case __acorn.tokTypes._with:
- this.next()
- node.object = this.parseParenExpression()
- node.body = this.parseStatement()
- return this.finishNode(node, "WithStatement")
- case __acorn.tokTypes.braceL:
- return this.parseBlock()
- case __acorn.tokTypes.semi:
- this.next()
- return this.finishNode(node, "EmptyStatement")
- case __acorn.tokTypes._class:
- return this.parseClass(true)
- case __acorn.tokTypes._import:
- return this.parseImport()
- case __acorn.tokTypes._export:
- return this.parseExport()
- default:
- if (this.toks.isAsyncFunction()) {
- this.next()
- this.next()
- return this.parseFunction(node, true, true)
- }
- var expr = this.parseExpression()
- if (isDummy(expr)) {
- this.next()
- if (this.tok.type === __acorn.tokTypes.eof) return this.finishNode(node, "EmptyStatement")
- return this.parseStatement()
- } else if (starttype === __acorn.tokTypes.name && expr.type === "Identifier" && this.eat(__acorn.tokTypes.colon)) {
- node.body = this.parseStatement()
- node.label = expr
- return this.finishNode(node, "LabeledStatement")
- } else {
- node.expression = expr
- this.semicolon()
- return this.finishNode(node, "ExpressionStatement")
- }
- }
- }
- lp$1.parseBlock = function() {
- var this$1 = this;
- var node = this.startNode()
- this.pushCx()
- this.expect(__acorn.tokTypes.braceL)
- var blockIndent = this.curIndent, line = this.curLineStart
- node.body = []
- while (!this.closes(__acorn.tokTypes.braceR, blockIndent, line, true))
- node.body.push(this$1.parseStatement())
- this.popCx()
- this.eat(__acorn.tokTypes.braceR)
- return this.finishNode(node, "BlockStatement")
- }
- lp$1.parseFor = function(node, init) {
- node.init = init
- node.test = node.update = null
- if (this.eat(__acorn.tokTypes.semi) && this.tok.type !== __acorn.tokTypes.semi) node.test = this.parseExpression()
- if (this.eat(__acorn.tokTypes.semi) && this.tok.type !== __acorn.tokTypes.parenR) node.update = this.parseExpression()
- this.popCx()
- this.expect(__acorn.tokTypes.parenR)
- node.body = this.parseStatement()
- return this.finishNode(node, "ForStatement")
- }
- lp$1.parseForIn = function(node, init) {
- var type = this.tok.type === __acorn.tokTypes._in ? "ForInStatement" : "ForOfStatement"
- this.next()
- node.left = init
- node.right = this.parseExpression()
- this.popCx()
- this.expect(__acorn.tokTypes.parenR)
- node.body = this.parseStatement()
- return this.finishNode(node, type)
- }
- lp$1.parseVar = function(noIn, kind) {
- var this$1 = this;
- var node = this.startNode()
- node.kind = kind
- this.next()
- node.declarations = []
- do {
- var decl = this$1.startNode()
- decl.id = this$1.options.ecmaVersion >= 6 ? this$1.toAssignable(this$1.parseExprAtom(), true) : this$1.parseIdent()
- decl.init = this$1.eat(__acorn.tokTypes.eq) ? this$1.parseMaybeAssign(noIn) : null
- node.declarations.push(this$1.finishNode(decl, "VariableDeclarator"))
- } while (this.eat(__acorn.tokTypes.comma))
- if (!node.declarations.length) {
- var decl$1 = this.startNode()
- decl$1.id = this.dummyIdent()
- node.declarations.push(this.finishNode(decl$1, "VariableDeclarator"))
- }
- if (!noIn) this.semicolon()
- return this.finishNode(node, "VariableDeclaration")
- }
- lp$1.parseClass = function(isStatement) {
- var this$1 = this;
- var node = this.startNode()
- this.next()
- if (isStatement == null) isStatement = this.tok.type === __acorn.tokTypes.name
- if (this.tok.type === __acorn.tokTypes.name) node.id = this.parseIdent()
- else if (isStatement) node.id = this.dummyIdent()
- else node.id = null
- node.superClass = this.eat(__acorn.tokTypes._extends) ? this.parseExpression() : null
- node.body = this.startNode()
- node.body.body = []
- this.pushCx()
- var indent = this.curIndent + 1, line = this.curLineStart
- this.eat(__acorn.tokTypes.braceL)
- if (this.curIndent + 1 < indent) { indent = this.curIndent; line = this.curLineStart }
- while (!this.closes(__acorn.tokTypes.braceR, indent, line)) {
- if (this$1.semicolon()) continue
- var method = this$1.startNode(), isGenerator, isAsync
- if (this$1.options.ecmaVersion >= 6) {
- method.static = false
- isGenerator = this$1.eat(__acorn.tokTypes.star)
- }
- this$1.parsePropertyName(method)
- if (isDummy(method.key)) { if (isDummy(this$1.parseMaybeAssign())) this$1.next(); this$1.eat(__acorn.tokTypes.comma); continue }
- if (method.key.type === "Identifier" && !method.computed && method.key.name === "static" &&
- (this$1.tok.type != __acorn.tokTypes.parenL && this$1.tok.type != __acorn.tokTypes.braceL)) {
- method.static = true
- isGenerator = this$1.eat(__acorn.tokTypes.star)
- this$1.parsePropertyName(method)
- } else {
- method.static = false
- }
- if (!method.computed &&
- method.key.type === "Identifier" && method.key.name === "async" && this$1.tok.type !== __acorn.tokTypes.parenL &&
- !this$1.canInsertSemicolon()) {
- this$1.parsePropertyName(method)
- isAsync = true
- } else {
- isAsync = false
- }
- if (this$1.options.ecmaVersion >= 5 && method.key.type === "Identifier" &&
- !method.computed && (method.key.name === "get" || method.key.name === "set") &&
- this$1.tok.type !== __acorn.tokTypes.parenL && this$1.tok.type !== __acorn.tokTypes.braceL) {
- method.kind = method.key.name
- this$1.parsePropertyName(method)
- method.value = this$1.parseMethod(false)
- } else {
- if (!method.computed && !method.static && !isGenerator && !isAsync && (
- method.key.type === "Identifier" && method.key.name === "constructor" ||
- method.key.type === "Literal" && method.key.value === "constructor")) {
- method.kind = "constructor"
- } else {
- method.kind = "method"
- }
- method.value = this$1.parseMethod(isGenerator, isAsync)
- }
- node.body.body.push(this$1.finishNode(method, "MethodDefinition"))
- }
- this.popCx()
- if (!this.eat(__acorn.tokTypes.braceR)) {
- // If there is no closing brace, make the node span to the start
- // of the next token (this is useful for Tern)
- this.last.end = this.tok.start
- if (this.options.locations) this.last.loc.end = this.tok.loc.start
- }
- this.semicolon()
- this.finishNode(node.body, "ClassBody")
- return this.finishNode(node, isStatement ? "ClassDeclaration" : "ClassExpression")
- }
- lp$1.parseFunction = function(node, isStatement, isAsync) {
- var oldInAsync = this.inAsync
- this.initFunction(node)
- if (this.options.ecmaVersion >= 6) {
- node.generator = this.eat(__acorn.tokTypes.star)
- }
- if (this.options.ecmaVersion >= 8) {
- node.async = !!isAsync
- }
- if (isStatement == null) isStatement = this.tok.type === __acorn.tokTypes.name
- if (this.tok.type === __acorn.tokTypes.name) node.id = this.parseIdent()
- else if (isStatement) node.id = this.dummyIdent()
- this.inAsync = node.async
- node.params = this.parseFunctionParams()
- node.body = this.parseBlock()
- this.inAsync = oldInAsync
- return this.finishNode(node, isStatement ? "FunctionDeclaration" : "FunctionExpression")
- }
- lp$1.parseExport = function() {
- var node = this.startNode()
- this.next()
- if (this.eat(__acorn.tokTypes.star)) {
- node.source = this.eatContextual("from") ? this.parseExprAtom() : this.dummyString()
- return this.finishNode(node, "ExportAllDeclaration")
- }
- if (this.eat(__acorn.tokTypes._default)) {
- // export default (function foo() {}) // This is FunctionExpression.
- var isAsync
- if (this.tok.type === __acorn.tokTypes._function || (isAsync = this.toks.isAsyncFunction())) {
- var fNode = this.startNode()
- this.next()
- if (isAsync) this.next()
- node.declaration = this.parseFunction(fNode, null, isAsync)
- } else if (this.tok.type === __acorn.tokTypes._class) {
- node.declaration = this.parseClass(null)
- } else {
- node.declaration = this.parseMaybeAssign()
- this.semicolon()
- }
- return this.finishNode(node, "ExportDefaultDeclaration")
- }
- if (this.tok.type.keyword || this.toks.isLet() || this.toks.isAsyncFunction()) {
- node.declaration = this.parseStatement()
- node.specifiers = []
- node.source = null
- } else {
- node.declaration = null
- node.specifiers = this.parseExportSpecifierList()
- node.source = this.eatContextual("from") ? this.parseExprAtom() : null
- this.semicolon()
- }
- return this.finishNode(node, "ExportNamedDeclaration")
- }
- lp$1.parseImport = function() {
- var node = this.startNode()
- this.next()
- if (this.tok.type === __acorn.tokTypes.string) {
- node.specifiers = []
- node.source = this.parseExprAtom()
- node.kind = ''
- } else {
- var elt
- if (this.tok.type === __acorn.tokTypes.name && this.tok.value !== "from") {
- elt = this.startNode()
- elt.local = this.parseIdent()
- this.finishNode(elt, "ImportDefaultSpecifier")
- this.eat(__acorn.tokTypes.comma)
- }
- node.specifiers = this.parseImportSpecifierList()
- node.source = this.eatContextual("from") && this.tok.type == __acorn.tokTypes.string ? this.parseExprAtom() : this.dummyString()
- if (elt) node.specifiers.unshift(elt)
- }
- this.semicolon()
- return this.finishNode(node, "ImportDeclaration")
- }
- lp$1.parseImportSpecifierList = function() {
- var this$1 = this;
- var elts = []
- if (this.tok.type === __acorn.tokTypes.star) {
- var elt = this.startNode()
- this.next()
- elt.local = this.eatContextual("as") ? this.parseIdent() : this.dummyIdent()
- elts.push(this.finishNode(elt, "ImportNamespaceSpecifier"))
- } else {
- var indent = this.curIndent, line = this.curLineStart, continuedLine = this.nextLineStart
- this.pushCx()
- this.eat(__acorn.tokTypes.braceL)
- if (this.curLineStart > continuedLine) continuedLine = this.curLineStart
- while (!this.closes(__acorn.tokTypes.braceR, indent + (this.curLineStart <= continuedLine ? 1 : 0), line)) {
- var elt$1 = this$1.startNode()
- if (this$1.eat(__acorn.tokTypes.star)) {
- elt$1.local = this$1.eatContextual("as") ? this$1.parseIdent() : this$1.dummyIdent()
- this$1.finishNode(elt$1, "ImportNamespaceSpecifier")
- } else {
- if (this$1.isContextual("from")) break
- elt$1.imported = this$1.parseIdent()
- if (isDummy(elt$1.imported)) break
- elt$1.local = this$1.eatContextual("as") ? this$1.parseIdent() : elt$1.imported
- this$1.finishNode(elt$1, "ImportSpecifier")
- }
- elts.push(elt$1)
- this$1.eat(__acorn.tokTypes.comma)
- }
- this.eat(__acorn.tokTypes.braceR)
- this.popCx()
- }
- return elts
- }
- lp$1.parseExportSpecifierList = function() {
- var this$1 = this;
- var elts = []
- var indent = this.curIndent, line = this.curLineStart, continuedLine = this.nextLineStart
- this.pushCx()
- this.eat(__acorn.tokTypes.braceL)
- if (this.curLineStart > continuedLine) continuedLine = this.curLineStart
- while (!this.closes(__acorn.tokTypes.braceR, indent + (this.curLineStart <= continuedLine ? 1 : 0), line)) {
- if (this$1.isContextual("from")) break
- var elt = this$1.startNode()
- elt.local = this$1.parseIdent()
- if (isDummy(elt.local)) break
- elt.exported = this$1.eatContextual("as") ? this$1.parseIdent() : elt.local
- this$1.finishNode(elt, "ExportSpecifier")
- elts.push(elt)
- this$1.eat(__acorn.tokTypes.comma)
- }
- this.eat(__acorn.tokTypes.braceR)
- this.popCx()
- return elts
- }
- var lp$2 = LooseParser.prototype
- lp$2.checkLVal = function(expr) {
- if (!expr) return expr
- switch (expr.type) {
- case "Identifier":
- case "MemberExpression":
- return expr
- case "ParenthesizedExpression":
- expr.expression = this.checkLVal(expr.expression)
- return expr
- default:
- return this.dummyIdent()
- }
- }
- lp$2.parseExpression = function(noIn) {
- var this$1 = this;
- var start = this.storeCurrentPos()
- var expr = this.parseMaybeAssign(noIn)
- if (this.tok.type === __acorn.tokTypes.comma) {
- var node = this.startNodeAt(start)
- node.expressions = [expr]
- while (this.eat(__acorn.tokTypes.comma)) node.expressions.push(this$1.parseMaybeAssign(noIn))
- return this.finishNode(node, "SequenceExpression")
- }
- return expr
- }
- lp$2.parseParenExpression = function() {
- this.pushCx()
- this.expect(__acorn.tokTypes.parenL)
- var val = this.parseExpression()
- this.popCx()
- this.expect(__acorn.tokTypes.parenR)
- return val
- }
- lp$2.parseMaybeAssign = function(noIn) {
- if (this.toks.isContextual("yield")) {
- var node = this.startNode()
- this.next()
- if (this.semicolon() || this.canInsertSemicolon() || (this.tok.type != __acorn.tokTypes.star && !this.tok.type.startsExpr)) {
- node.delegate = false
- node.argument = null
- } else {
- node.delegate = this.eat(__acorn.tokTypes.star)
- node.argument = this.parseMaybeAssign()
- }
- return this.finishNode(node, "YieldExpression")
- }
- var start = this.storeCurrentPos()
- var left = this.parseMaybeConditional(noIn)
- if (this.tok.type.isAssign) {
- var node$1 = this.startNodeAt(start)
- node$1.operator = this.tok.value
- node$1.left = this.tok.type === __acorn.tokTypes.eq ? this.toAssignable(left) : this.checkLVal(left)
- this.next()
- node$1.right = this.parseMaybeAssign(noIn)
- return this.finishNode(node$1, "AssignmentExpression")
- }
- return left
- }
- lp$2.parseMaybeConditional = function(noIn) {
- var start = this.storeCurrentPos()
- var expr = this.parseExprOps(noIn)
- if (this.eat(__acorn.tokTypes.question)) {
- var node = this.startNodeAt(start)
- node.test = expr
- node.consequent = this.parseMaybeAssign()
- node.alternate = this.expect(__acorn.tokTypes.colon) ? this.parseMaybeAssign(noIn) : this.dummyIdent()
- return this.finishNode(node, "ConditionalExpression")
- }
- return expr
- }
- lp$2.parseExprOps = function(noIn) {
- var start = this.storeCurrentPos()
- var indent = this.curIndent, line = this.curLineStart
- return this.parseExprOp(this.parseMaybeUnary(false), start, -1, noIn, indent, line)
- }
- lp$2.parseExprOp = function(left, start, minPrec, noIn, indent, line) {
- if (this.curLineStart != line && this.curIndent < indent && this.tokenStartsLine()) return left
- var prec = this.tok.type.binop
- if (prec != null && (!noIn || this.tok.type !== __acorn.tokTypes._in)) {
- if (prec > minPrec) {
- var node = this.startNodeAt(start)
- node.left = left
- node.operator = this.tok.value
- this.next()
- if (this.curLineStart != line && this.curIndent < indent && this.tokenStartsLine()) {
- node.right = this.dummyIdent()
- } else {
- var rightStart = this.storeCurrentPos()
- node.right = this.parseExprOp(this.parseMaybeUnary(false), rightStart, prec, noIn, indent, line)
- }
- this.finishNode(node, /&&|\|\|/.test(node.operator) ? "LogicalExpression" : "BinaryExpression")
- return this.parseExprOp(node, start, minPrec, noIn, indent, line)
- }
- }
- return left
- }
- lp$2.parseMaybeUnary = function(sawUnary) {
- var this$1 = this;
- var start = this.storeCurrentPos(), expr
- if (this.options.ecmaVersion >= 8 && this.inAsync && this.toks.isContextual("await")) {
- expr = this.parseAwait()
- sawUnary = true
- } else if (this.tok.type.prefix) {
- var node = this.startNode(), update = this.tok.type === __acorn.tokTypes.incDec
- if (!update) sawUnary = true
- node.operator = this.tok.value
- node.prefix = true
- this.next()
- node.argument = this.parseMaybeUnary(true)
- if (update) node.argument = this.checkLVal(node.argument)
- expr = this.finishNode(node, update ? "UpdateExpression" : "UnaryExpression")
- } else if (this.tok.type === __acorn.tokTypes.ellipsis) {
- var node$1 = this.startNode()
- this.next()
- node$1.argument = this.parseMaybeUnary(sawUnary)
- expr = this.finishNode(node$1, "SpreadElement")
- } else {
- expr = this.parseExprSubscripts()
- while (this.tok.type.postfix && !this.canInsertSemicolon()) {
- var node$2 = this$1.startNodeAt(start)
- node$2.operator = this$1.tok.value
- node$2.prefix = false
- node$2.argument = this$1.checkLVal(expr)
- this$1.next()
- expr = this$1.finishNode(node$2, "UpdateExpression")
- }
- }
- if (!sawUnary && this.eat(__acorn.tokTypes.starstar)) {
- var node$3 = this.startNodeAt(start)
- node$3.operator = "**"
- node$3.left = expr
- node$3.right = this.parseMaybeUnary(false)
- return this.finishNode(node$3, "BinaryExpression")
- }
- return expr
- }
- lp$2.parseExprSubscripts = function() {
- var start = this.storeCurrentPos()
- return this.parseSubscripts(this.parseExprAtom(), start, false, this.curIndent, this.curLineStart)
- }
- lp$2.parseSubscripts = function(base, start, noCalls, startIndent, line) {
- var this$1 = this;
- for (;;) {
- if (this$1.curLineStart != line && this$1.curIndent <= startIndent && this$1.tokenStartsLine()) {
- if (this$1.tok.type == __acorn.tokTypes.dot && this$1.curIndent == startIndent)
- --startIndent
- else
- return base
- }
- var maybeAsyncArrow = base.type === "Identifier" && base.name === "async" && !this$1.canInsertSemicolon()
- if (this$1.eat(__acorn.tokTypes.dot)) {
- var node = this$1.startNodeAt(start)
- node.object = base
- if (this$1.curLineStart != line && this$1.curIndent <= startIndent && this$1.tokenStartsLine())
- node.property = this$1.dummyIdent()
- else
- node.property = this$1.parsePropertyAccessor() || this$1.dummyIdent()
- node.computed = false
- base = this$1.finishNode(node, "MemberExpression")
- } else if (this$1.tok.type == __acorn.tokTypes.bracketL) {
- this$1.pushCx()
- this$1.next()
- var node$1 = this$1.startNodeAt(start)
- node$1.object = base
- node$1.property = this$1.parseExpression()
- node$1.computed = true
- this$1.popCx()
- this$1.expect(__acorn.tokTypes.bracketR)
- base = this$1.finishNode(node$1, "MemberExpression")
- } else if (!noCalls && this$1.tok.type == __acorn.tokTypes.parenL) {
- var exprList = this$1.parseExprList(__acorn.tokTypes.parenR)
- if (maybeAsyncArrow && this$1.eat(__acorn.tokTypes.arrow))
- return this$1.parseArrowExpression(this$1.startNodeAt(start), exprList, true)
- var node$2 = this$1.startNodeAt(start)
- node$2.callee = base
- node$2.arguments = exprList
- base = this$1.finishNode(node$2, "CallExpression")
- } else if (this$1.tok.type == __acorn.tokTypes.backQuote) {
- var node$3 = this$1.startNodeAt(start)
- node$3.tag = base
- node$3.quasi = this$1.parseTemplate()
- base = this$1.finishNode(node$3, "TaggedTemplateExpression")
- } else {
- return base
- }
- }
- }
- lp$2.parseExprAtom = function() {
- var node
- switch (this.tok.type) {
- case __acorn.tokTypes._this:
- case __acorn.tokTypes._super:
- var type = this.tok.type === __acorn.tokTypes._this ? "ThisExpression" : "Super"
- node = this.startNode()
- this.next()
- return this.finishNode(node, type)
- case __acorn.tokTypes.name:
- var start = this.storeCurrentPos()
- var id = this.parseIdent()
- var isAsync = false
- if (id.name === "async" && !this.canInsertSemicolon()) {
- if (this.eat(__acorn.tokTypes._function))
- return this.parseFunction(this.startNodeAt(start), false, true)
- if (this.tok.type === __acorn.tokTypes.name) {
- id = this.parseIdent()
- isAsync = true
- }
- }
- return this.eat(__acorn.tokTypes.arrow) ? this.parseArrowExpression(this.startNodeAt(start), [id], isAsync) : id
- case __acorn.tokTypes.regexp:
- node = this.startNode()
- var val = this.tok.value
- node.regex = {pattern: val.pattern, flags: val.flags}
- node.value = val.value
- node.raw = this.input.slice(this.tok.start, this.tok.end)
- this.next()
- return this.finishNode(node, "Literal")
- case __acorn.tokTypes.num: case __acorn.tokTypes.string:
- node = this.startNode()
- node.value = this.tok.value
- node.raw = this.input.slice(this.tok.start, this.tok.end)
- this.next()
- return this.finishNode(node, "Literal")
- case __acorn.tokTypes._null: case __acorn.tokTypes._true: case __acorn.tokTypes._false:
- node = this.startNode()
- node.value = this.tok.type === __acorn.tokTypes._null ? null : this.tok.type === __acorn.tokTypes._true
- node.raw = this.tok.type.keyword
- this.next()
- return this.finishNode(node, "Literal")
- case __acorn.tokTypes.parenL:
- var parenStart = this.storeCurrentPos()
- this.next()
- var inner = this.parseExpression()
- this.expect(__acorn.tokTypes.parenR)
- if (this.eat(__acorn.tokTypes.arrow)) {
- // (a,)=>a // SequenceExpression makes dummy in the last hole. Drop the dummy.
- var params = inner.expressions || [inner]
- if (params.length && isDummy(params[params.length - 1]))
- params.pop()
- return this.parseArrowExpression(this.startNodeAt(parenStart), params)
- }
- if (this.options.preserveParens) {
- var par = this.startNodeAt(parenStart)
- par.expression = inner
- inner = this.finishNode(par, "ParenthesizedExpression")
- }
- return inner
- case __acorn.tokTypes.bracketL:
- node = this.startNode()
- node.elements = this.parseExprList(__acorn.tokTypes.bracketR, true)
- return this.finishNode(node, "ArrayExpression")
- case __acorn.tokTypes.braceL:
- return this.parseObj()
- case __acorn.tokTypes._class:
- return this.parseClass(false)
- case __acorn.tokTypes._function:
- node = this.startNode()
- this.next()
- return this.parseFunction(node, false)
- case __acorn.tokTypes._new:
- return this.parseNew()
- case __acorn.tokTypes.backQuote:
- return this.parseTemplate()
- default:
- return this.dummyIdent()
- }
- }
- lp$2.parseNew = function() {
- var node = this.startNode(), startIndent = this.curIndent, line = this.curLineStart
- var meta = this.parseIdent(true)
- if (this.options.ecmaVersion >= 6 && this.eat(__acorn.tokTypes.dot)) {
- node.meta = meta
- node.property = this.parseIdent(true)
- return this.finishNode(node, "MetaProperty")
- }
- var start = this.storeCurrentPos()
- node.callee = this.parseSubscripts(this.parseExprAtom(), start, true, startIndent, line)
- if (this.tok.type == __acorn.tokTypes.parenL) {
- node.arguments = this.parseExprList(__acorn.tokTypes.parenR)
- } else {
- node.arguments = []
- }
- return this.finishNode(node, "NewExpression")
- }
- lp$2.parseTemplateElement = function() {
- var elem = this.startNode()
- elem.value = {
- raw: this.input.slice(this.tok.start, this.tok.end).replace(/\r\n?/g, '\n'),
- cooked: this.tok.value
- }
- this.next()
- elem.tail = this.tok.type === __acorn.tokTypes.backQuote
- return this.finishNode(elem, "TemplateElement")
- }
- lp$2.parseTemplate = function() {
- var this$1 = this;
- var node = this.startNode()
- this.next()
- node.expressions = []
- var curElt = this.parseTemplateElement()
- node.quasis = [curElt]
- while (!curElt.tail) {
- this$1.next()
- node.expressions.push(this$1.parseExpression())
- if (this$1.expect(__acorn.tokTypes.braceR)) {
- curElt = this$1.parseTemplateElement()
- } else {
- curElt = this$1.startNode()
- curElt.value = {cooked: '', raw: ''}
- curElt.tail = true
- this$1.finishNode(curElt, "TemplateElement")
- }
- node.quasis.push(curElt)
- }
- this.expect(__acorn.tokTypes.backQuote)
- return this.finishNode(node, "TemplateLiteral")
- }
- lp$2.parseObj = function() {
- var this$1 = this;
- var node = this.startNode()
- node.properties = []
- this.pushCx()
- var indent = this.curIndent + 1, line = this.curLineStart
- this.eat(__acorn.tokTypes.braceL)
- if (this.curIndent + 1 < indent) { indent = this.curIndent; line = this.curLineStart }
- while (!this.closes(__acorn.tokTypes.braceR, indent, line)) {
- var prop = this$1.startNode(), isGenerator, isAsync, start
- if (this$1.options.ecmaVersion >= 6) {
- start = this$1.storeCurrentPos()
- prop.method = false
- prop.shorthand = false
- isGenerator = this$1.eat(__acorn.tokTypes.star)
- }
- this$1.parsePropertyName(prop)
- if (!prop.computed &&
- prop.key.type === "Identifier" && prop.key.name === "async" && this$1.tok.type !== __acorn.tokTypes.parenL &&
- this$1.tok.type !== __acorn.tokTypes.colon && !this$1.canInsertSemicolon()) {
- this$1.parsePropertyName(prop)
- isAsync = true
- } else {
- isAsync = false
- }
- if (isDummy(prop.key)) { if (isDummy(this$1.parseMaybeAssign())) this$1.next(); this$1.eat(__acorn.tokTypes.comma); continue }
- if (this$1.eat(__acorn.tokTypes.colon)) {
- prop.kind = "init"
- prop.value = this$1.parseMaybeAssign()
- } else if (this$1.options.ecmaVersion >= 6 && (this$1.tok.type === __acorn.tokTypes.parenL || this$1.tok.type === __acorn.tokTypes.braceL)) {
- prop.kind = "init"
- prop.method = true
- prop.value = this$1.parseMethod(isGenerator, isAsync)
- } else if (this$1.options.ecmaVersion >= 5 && prop.key.type === "Identifier" &&
- !prop.computed && (prop.key.name === "get" || prop.key.name === "set") &&
- (this$1.tok.type != __acorn.tokTypes.comma && this$1.tok.type != __acorn.tokTypes.braceR)) {
- prop.kind = prop.key.name
- this$1.parsePropertyName(prop)
- prop.value = this$1.parseMethod(false)
- } else {
- prop.kind = "init"
- if (this$1.options.ecmaVersion >= 6) {
- if (this$1.eat(__acorn.tokTypes.eq)) {
- var assign = this$1.startNodeAt(start)
- assign.operator = "="
- assign.left = prop.key
- assign.right = this$1.parseMaybeAssign()
- prop.value = this$1.finishNode(assign, "AssignmentExpression")
- } else {
- prop.value = prop.key
- }
- } else {
- prop.value = this$1.dummyIdent()
- }
- prop.shorthand = true
- }
- node.properties.push(this$1.finishNode(prop, "Property"))
- this$1.eat(__acorn.tokTypes.comma)
- }
- this.popCx()
- if (!this.eat(__acorn.tokTypes.braceR)) {
- // If there is no closing brace, make the node span to the start
- // of the next token (this is useful for Tern)
- this.last.end = this.tok.start
- if (this.options.locations) this.last.loc.end = this.tok.loc.start
- }
- return this.finishNode(node, "ObjectExpression")
- }
- lp$2.parsePropertyName = function(prop) {
- if (this.options.ecmaVersion >= 6) {
- if (this.eat(__acorn.tokTypes.bracketL)) {
- prop.computed = true
- prop.key = this.parseExpression()
- this.expect(__acorn.tokTypes.bracketR)
- return
- } else {
- prop.computed = false
- }
- }
- var key = (this.tok.type === __acorn.tokTypes.num || this.tok.type === __acorn.tokTypes.string) ? this.parseExprAtom() : this.parseIdent()
- prop.key = key || this.dummyIdent()
- }
- lp$2.parsePropertyAccessor = function() {
- if (this.tok.type === __acorn.tokTypes.name || this.tok.type.keyword) return this.parseIdent()
- }
- lp$2.parseIdent = function() {
- var name = this.tok.type === __acorn.tokTypes.name ? this.tok.value : this.tok.type.keyword
- if (!name) return this.dummyIdent()
- var node = this.startNode()
- this.next()
- node.name = name
- return this.finishNode(node, "Identifier")
- }
- lp$2.initFunction = function(node) {
- node.id = null
- node.params = []
- if (this.options.ecmaVersion >= 6) {
- node.generator = false
- node.expression = false
- }
- if (this.options.ecmaVersion >= 8)
- node.async = false
- }
- // Convert existing expression atom to assignable pattern
- // if possible.
- lp$2.toAssignable = function(node, binding) {
- var this$1 = this;
- if (!node || node.type == "Identifier" || (node.type == "MemberExpression" && !binding)) {
- // Okay
- } else if (node.type == "ParenthesizedExpression") {
- node.expression = this.toAssignable(node.expression, binding)
- } else if (this.options.ecmaVersion < 6) {
- return this.dummyIdent()
- } else if (node.type == "ObjectExpression") {
- node.type = "ObjectPattern"
- var props = node.properties
- for (var i = 0; i < props.length; i++)
- props[i].value = this$1.toAssignable(props[i].value, binding)
- } else if (node.type == "ArrayExpression") {
- node.type = "ArrayPattern"
- this.toAssignableList(node.elements, binding)
- } else if (node.type == "SpreadElement") {
- node.type = "RestElement"
- node.argument = this.toAssignable(node.argument, binding)
- } else if (node.type == "AssignmentExpression") {
- node.type = "AssignmentPattern"
- delete node.operator
- } else {
- return this.dummyIdent()
- }
- return node
- }
- lp$2.toAssignableList = function(exprList, binding) {
- var this$1 = this;
- for (var i = 0; i < exprList.length; i++)
- exprList[i] = this$1.toAssignable(exprList[i], binding)
- return exprList
- }
- lp$2.parseFunctionParams = function(params) {
- params = this.parseExprList(__acorn.tokTypes.parenR)
- return this.toAssignableList(params, true)
- }
- lp$2.parseMethod = function(isGenerator, isAsync) {
- var node = this.startNode(), oldInAsync = this.inAsync
- this.initFunction(node)
- if (this.options.ecmaVersion >= 6)
- node.generator = !!isGenerator
- if (this.options.ecmaVersion >= 8)
- node.async = !!isAsync
- this.inAsync = node.async
- node.params = this.parseFunctionParams()
- node.expression = this.options.ecmaVersion >= 6 && this.tok.type !== __acorn.tokTypes.braceL
- node.body = node.expression ? this.parseMaybeAssign() : this.parseBlock()
- this.inAsync = oldInAsync
- return this.finishNode(node, "FunctionExpression")
- }
- lp$2.parseArrowExpression = function(node, params, isAsync) {
- var oldInAsync = this.inAsync
- this.initFunction(node)
- if (this.options.ecmaVersion >= 8)
- node.async = !!isAsync
- this.inAsync = node.async
- node.params = this.toAssignableList(params, true)
- node.expression = this.tok.type !== __acorn.tokTypes.braceL
- node.body = node.expression ? this.parseMaybeAssign() : this.parseBlock()
- this.inAsync = oldInAsync
- return this.finishNode(node, "ArrowFunctionExpression")
- }
- lp$2.parseExprList = function(close, allowEmpty) {
- var this$1 = this;
- this.pushCx()
- var indent = this.curIndent, line = this.curLineStart, elts = []
- this.next() // Opening bracket
- while (!this.closes(close, indent + 1, line)) {
- if (this$1.eat(__acorn.tokTypes.comma)) {
- elts.push(allowEmpty ? null : this$1.dummyIdent())
- continue
- }
- var elt = this$1.parseMaybeAssign()
- if (isDummy(elt)) {
- if (this$1.closes(close, indent, line)) break
- this$1.next()
- } else {
- elts.push(elt)
- }
- this$1.eat(__acorn.tokTypes.comma)
- }
- this.popCx()
- if (!this.eat(close)) {
- // If there is no closing brace, make the node span to the start
- // of the next token (this is useful for Tern)
- this.last.end = this.tok.start
- if (this.options.locations) this.last.loc.end = this.tok.loc.start
- }
- return elts
- }
- lp$2.parseAwait = function() {
- var node = this.startNode()
- this.next()
- node.argument = this.parseMaybeUnary()
- return this.finishNode(node, "AwaitExpression")
- }
- // Acorn: Loose parser
- //
- // This module provides an alternative parser (`parse_dammit`) that
- // exposes that same interface as `parse`, but will try to parse
- // anything as JavaScript, repairing syntax error the best it can.
- // There are circumstances in which it will raise an error and give
- // up, but they are very rare. The resulting AST will be a mostly
- // valid JavaScript AST (as per the [Mozilla parser API][api], except
- // that:
- //
- // - Return outside functions is allowed
- //
- // - Label consistency (no conflicts, break only to existing labels)
- // is not enforced.
- //
- // - Bogus Identifier nodes with a name of `"✖"` are inserted whenever
- // the parser got too confused to return anything meaningful.
- //
- // [api]: https://developer.mozilla.org/en-US/docs/SpiderMonkey/Parser_API
- //
- // The expected use for this is to *first* try `acorn.parse`, and only
- // if that fails switch to `parse_dammit`. The loose parser might
- // parse badly indented code incorrectly, so **don't** use it as
- // your default parser.
- //
- // Quite a lot of acorn.js is duplicated here. The alternative was to
- // add a *lot* of extra cruft to that file, making it less readable
- // and slower. Copying and editing the code allowed me to make
- // invasive changes and simplifications without creating a complicated
- // tangle.
- __acorn.defaultOptions.tabSize = 4
- function parse_dammit(input, options) {
- var p = new LooseParser(input, options)
- p.next()
- return p.parseTopLevel()
- }
- __acorn.addLooseExports(parse_dammit, LooseParser, pluginsLoose)
- exports.parse_dammit = parse_dammit;
- exports.LooseParser = LooseParser;
- exports.pluginsLoose = pluginsLoose;
- Object.defineProperty(exports, '__esModule', { value: true });
- })));
|