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1364 lines
44 KiB
JavaScript
1364 lines
44 KiB
JavaScript
7 years ago
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import { defaultOptions, addLooseExports, SourceLocation, tokTypes, tokenizer, Node, lineBreak, isNewLine, getLineInfo, Token, lineBreakG } from './acorn';
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// Registered plugins
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var pluginsLoose = {}
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var LooseParser = function LooseParser(input, options) {
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if ( options === void 0 ) options = {};
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this.toks = tokenizer(input, options)
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this.options = this.toks.options
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this.input = this.toks.input
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this.tok = this.last = {type: tokTypes.eof, start: 0, end: 0}
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if (this.options.locations) {
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var here = this.toks.curPosition()
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this.tok.loc = new SourceLocation(this.toks, here, here)
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}
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this.ahead = [] // Tokens ahead
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this.context = [] // Indentation contexted
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this.curIndent = 0
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this.curLineStart = 0
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this.nextLineStart = this.lineEnd(this.curLineStart) + 1
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this.inAsync = false
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// Load plugins
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this.options.pluginsLoose = options.pluginsLoose || {}
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this.loadPlugins(this.options.pluginsLoose)
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};
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LooseParser.prototype.startNode = function startNode () {
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return new Node(this.toks, this.tok.start, this.options.locations ? this.tok.loc.start : null)
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};
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LooseParser.prototype.storeCurrentPos = function storeCurrentPos () {
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return this.options.locations ? [this.tok.start, this.tok.loc.start] : this.tok.start
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};
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LooseParser.prototype.startNodeAt = function startNodeAt (pos) {
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if (this.options.locations) {
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return new Node(this.toks, pos[0], pos[1])
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} else {
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return new Node(this.toks, pos)
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}
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};
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LooseParser.prototype.finishNode = function finishNode (node, type) {
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node.type = type
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node.end = this.last.end
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if (this.options.locations)
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node.loc.end = this.last.loc.end
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if (this.options.ranges)
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node.range[1] = this.last.end
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return node
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};
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LooseParser.prototype.dummyNode = function dummyNode (type) {
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var dummy = this.startNode()
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dummy.type = type
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dummy.end = dummy.start
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if (this.options.locations)
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dummy.loc.end = dummy.loc.start
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if (this.options.ranges)
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dummy.range[1] = dummy.start
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this.last = {type: tokTypes.name, start: dummy.start, end: dummy.start, loc: dummy.loc}
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return dummy
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};
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LooseParser.prototype.dummyIdent = function dummyIdent () {
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var dummy = this.dummyNode("Identifier")
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dummy.name = "✖"
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return dummy
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};
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LooseParser.prototype.dummyString = function dummyString () {
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var dummy = this.dummyNode("Literal")
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dummy.value = dummy.raw = "✖"
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return dummy
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};
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LooseParser.prototype.eat = function eat (type) {
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if (this.tok.type === type) {
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this.next()
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return true
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} else {
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return false
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}
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};
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LooseParser.prototype.isContextual = function isContextual (name) {
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return this.tok.type === tokTypes.name && this.tok.value === name
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};
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LooseParser.prototype.eatContextual = function eatContextual (name) {
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return this.tok.value === name && this.eat(tokTypes.name)
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};
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LooseParser.prototype.canInsertSemicolon = function canInsertSemicolon () {
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return this.tok.type === tokTypes.eof || this.tok.type === tokTypes.braceR ||
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lineBreak.test(this.input.slice(this.last.end, this.tok.start))
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};
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LooseParser.prototype.semicolon = function semicolon () {
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return this.eat(tokTypes.semi)
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};
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LooseParser.prototype.expect = function expect (type) {
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var this$1 = this;
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if (this.eat(type)) return true
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for (var i = 1; i <= 2; i++) {
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if (this$1.lookAhead(i).type == type) {
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for (var j = 0; j < i; j++) this$1.next()
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return true
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}
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}
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};
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LooseParser.prototype.pushCx = function pushCx () {
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this.context.push(this.curIndent)
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};
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LooseParser.prototype.popCx = function popCx () {
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this.curIndent = this.context.pop()
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};
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LooseParser.prototype.lineEnd = function lineEnd (pos) {
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while (pos < this.input.length && !isNewLine(this.input.charCodeAt(pos))) ++pos
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return pos
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};
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LooseParser.prototype.indentationAfter = function indentationAfter (pos) {
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var this$1 = this;
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for (var count = 0;; ++pos) {
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var ch = this$1.input.charCodeAt(pos)
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if (ch === 32) ++count
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else if (ch === 9) count += this$1.options.tabSize
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else return count
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}
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};
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LooseParser.prototype.closes = function closes (closeTok, indent, line, blockHeuristic) {
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if (this.tok.type === closeTok || this.tok.type === tokTypes.eof) return true
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return line != this.curLineStart && this.curIndent < indent && this.tokenStartsLine() &&
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(!blockHeuristic || this.nextLineStart >= this.input.length ||
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this.indentationAfter(this.nextLineStart) < indent)
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};
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LooseParser.prototype.tokenStartsLine = function tokenStartsLine () {
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var this$1 = this;
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for (var p = this.tok.start - 1; p >= this.curLineStart; --p) {
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var ch = this$1.input.charCodeAt(p)
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if (ch !== 9 && ch !== 32) return false
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}
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return true
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};
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LooseParser.prototype.extend = function extend (name, f) {
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this[name] = f(this[name])
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};
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LooseParser.prototype.loadPlugins = function loadPlugins (pluginConfigs) {
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var this$1 = this;
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for (var name in pluginConfigs) {
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var plugin = pluginsLoose[name]
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if (!plugin) throw new Error("Plugin '" + name + "' not found")
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plugin(this$1, pluginConfigs[name])
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}
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};
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var lp = LooseParser.prototype
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function isSpace(ch) {
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return (ch < 14 && ch > 8) || ch === 32 || ch === 160 || isNewLine(ch)
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}
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lp.next = function() {
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var this$1 = this;
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this.last = this.tok
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if (this.ahead.length)
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this.tok = this.ahead.shift()
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else
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this.tok = this.readToken()
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if (this.tok.start >= this.nextLineStart) {
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while (this.tok.start >= this.nextLineStart) {
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this$1.curLineStart = this$1.nextLineStart
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this$1.nextLineStart = this$1.lineEnd(this$1.curLineStart) + 1
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}
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this.curIndent = this.indentationAfter(this.curLineStart)
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}
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}
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lp.readToken = function() {
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var this$1 = this;
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for (;;) {
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try {
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this$1.toks.next()
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if (this$1.toks.type === tokTypes.dot &&
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this$1.input.substr(this$1.toks.end, 1) === "." &&
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this$1.options.ecmaVersion >= 6) {
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this$1.toks.end++
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this$1.toks.type = tokTypes.ellipsis
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}
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return new Token(this$1.toks)
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} catch(e) {
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if (!(e instanceof SyntaxError)) throw e
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// Try to skip some text, based on the error message, and then continue
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var msg = e.message, pos = e.raisedAt, replace = true
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if (/unterminated/i.test(msg)) {
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pos = this$1.lineEnd(e.pos + 1)
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if (/string/.test(msg)) {
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replace = {start: e.pos, end: pos, type: tokTypes.string, value: this$1.input.slice(e.pos + 1, pos)}
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} else if (/regular expr/i.test(msg)) {
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var re = this$1.input.slice(e.pos, pos)
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try { re = new RegExp(re) } catch(e) {}
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replace = {start: e.pos, end: pos, type: tokTypes.regexp, value: re}
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} else if (/template/.test(msg)) {
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replace = {start: e.pos, end: pos,
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type: tokTypes.template,
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value: this$1.input.slice(e.pos, pos)}
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} else {
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replace = false
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}
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} else if (/invalid (unicode|regexp|number)|expecting unicode|octal literal|is reserved|directly after number|expected number in radix/i.test(msg)) {
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while (pos < this.input.length && !isSpace(this.input.charCodeAt(pos))) ++pos
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} else if (/character escape|expected hexadecimal/i.test(msg)) {
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while (pos < this.input.length) {
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var ch = this$1.input.charCodeAt(pos++)
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if (ch === 34 || ch === 39 || isNewLine(ch)) break
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}
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} else if (/unexpected character/i.test(msg)) {
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pos++
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replace = false
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} else if (/regular expression/i.test(msg)) {
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replace = true
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} else {
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throw e
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}
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this$1.resetTo(pos)
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if (replace === true) replace = {start: pos, end: pos, type: tokTypes.name, value: "✖"}
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if (replace) {
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if (this$1.options.locations)
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replace.loc = new SourceLocation(
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this$1.toks,
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getLineInfo(this$1.input, replace.start),
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getLineInfo(this$1.input, replace.end))
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return replace
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}
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}
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}
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}
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lp.resetTo = function(pos) {
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var this$1 = this;
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this.toks.pos = pos
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var ch = this.input.charAt(pos - 1)
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this.toks.exprAllowed = !ch || /[\[\{\(,;:?\/*=+\-~!|&%^<>]/.test(ch) ||
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/[enwfd]/.test(ch) &&
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/\b(keywords|case|else|return|throw|new|in|(instance|type)of|delete|void)$/.test(this.input.slice(pos - 10, pos))
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if (this.options.locations) {
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this.toks.curLine = 1
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this.toks.lineStart = lineBreakG.lastIndex = 0
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var match
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while ((match = lineBreakG.exec(this.input)) && match.index < pos) {
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++this$1.toks.curLine
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this$1.toks.lineStart = match.index + match[0].length
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}
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}
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}
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lp.lookAhead = function(n) {
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var this$1 = this;
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while (n > this.ahead.length)
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this$1.ahead.push(this$1.readToken())
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return this.ahead[n - 1]
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}
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function isDummy(node) { return node.name == "✖" }
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var lp$1 = LooseParser.prototype
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lp$1.parseTopLevel = function() {
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var this$1 = this;
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var node = this.startNodeAt(this.options.locations ? [0, getLineInfo(this.input, 0)] : 0)
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node.body = []
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while (this.tok.type !== tokTypes.eof) node.body.push(this$1.parseStatement())
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this.last = this.tok
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if (this.options.ecmaVersion >= 6) {
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node.sourceType = this.options.sourceType
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}
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return this.finishNode(node, "Program")
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}
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lp$1.parseStatement = function() {
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var this$1 = this;
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var starttype = this.tok.type, node = this.startNode(), kind
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if (this.toks.isLet()) {
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starttype = tokTypes._var
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kind = "let"
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}
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switch (starttype) {
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case tokTypes._break: case tokTypes._continue:
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this.next()
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var isBreak = starttype === tokTypes._break
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if (this.semicolon() || this.canInsertSemicolon()) {
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node.label = null
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} else {
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node.label = this.tok.type === tokTypes.name ? this.parseIdent() : null
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this.semicolon()
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}
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return this.finishNode(node, isBreak ? "BreakStatement" : "ContinueStatement")
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case tokTypes._debugger:
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this.next()
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this.semicolon()
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return this.finishNode(node, "DebuggerStatement")
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case tokTypes._do:
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this.next()
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node.body = this.parseStatement()
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node.test = this.eat(tokTypes._while) ? this.parseParenExpression() : this.dummyIdent()
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this.semicolon()
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return this.finishNode(node, "DoWhileStatement")
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case tokTypes._for:
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this.next()
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this.pushCx()
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this.expect(tokTypes.parenL)
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if (this.tok.type === tokTypes.semi) return this.parseFor(node, null)
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var isLet = this.toks.isLet()
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if (isLet || this.tok.type === tokTypes._var || this.tok.type === tokTypes._const) {
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var init$1 = this.parseVar(true, isLet ? "let" : this.tok.value)
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if (init$1.declarations.length === 1 && (this.tok.type === tokTypes._in || this.isContextual("of"))) {
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return this.parseForIn(node, init$1)
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}
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return this.parseFor(node, init$1)
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}
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var init = this.parseExpression(true)
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if (this.tok.type === tokTypes._in || this.isContextual("of"))
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return this.parseForIn(node, this.toAssignable(init))
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return this.parseFor(node, init)
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case tokTypes._function:
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this.next()
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return this.parseFunction(node, true)
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case tokTypes._if:
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this.next()
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node.test = this.parseParenExpression()
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node.consequent = this.parseStatement()
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node.alternate = this.eat(tokTypes._else) ? this.parseStatement() : null
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return this.finishNode(node, "IfStatement")
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case tokTypes._return:
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this.next()
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if (this.eat(tokTypes.semi) || this.canInsertSemicolon()) node.argument = null
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else { node.argument = this.parseExpression(); this.semicolon() }
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return this.finishNode(node, "ReturnStatement")
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case tokTypes._switch:
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var blockIndent = this.curIndent, line = this.curLineStart
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this.next()
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node.discriminant = this.parseParenExpression()
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node.cases = []
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this.pushCx()
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this.expect(tokTypes.braceL)
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var cur
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while (!this.closes(tokTypes.braceR, blockIndent, line, true)) {
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if (this$1.tok.type === tokTypes._case || this$1.tok.type === tokTypes._default) {
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var isCase = this$1.tok.type === tokTypes._case
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if (cur) this$1.finishNode(cur, "SwitchCase")
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node.cases.push(cur = this$1.startNode())
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cur.consequent = []
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this$1.next()
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if (isCase) cur.test = this$1.parseExpression()
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else cur.test = null
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this$1.expect(tokTypes.colon)
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} else {
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if (!cur) {
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node.cases.push(cur = this$1.startNode())
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cur.consequent = []
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cur.test = null
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}
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cur.consequent.push(this$1.parseStatement())
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}
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}
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if (cur) this.finishNode(cur, "SwitchCase")
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this.popCx()
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this.eat(tokTypes.braceR)
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return this.finishNode(node, "SwitchStatement")
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||
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case tokTypes._throw:
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this.next()
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node.argument = this.parseExpression()
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this.semicolon()
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return this.finishNode(node, "ThrowStatement")
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case tokTypes._try:
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this.next()
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||
|
node.block = this.parseBlock()
|
||
|
node.handler = null
|
||
|
if (this.tok.type === tokTypes._catch) {
|
||
|
var clause = this.startNode()
|
||
|
this.next()
|
||
|
this.expect(tokTypes.parenL)
|
||
|
clause.param = this.toAssignable(this.parseExprAtom(), true)
|
||
|
this.expect(tokTypes.parenR)
|
||
|
clause.body = this.parseBlock()
|
||
|
node.handler = this.finishNode(clause, "CatchClause")
|
||
|
}
|
||
|
node.finalizer = this.eat(tokTypes._finally) ? this.parseBlock() : null
|
||
|
if (!node.handler && !node.finalizer) return node.block
|
||
|
return this.finishNode(node, "TryStatement")
|
||
|
|
||
|
case tokTypes._var:
|
||
|
case tokTypes._const:
|
||
|
return this.parseVar(false, kind || this.tok.value)
|
||
|
|
||
|
case tokTypes._while:
|
||
|
this.next()
|
||
|
node.test = this.parseParenExpression()
|
||
|
node.body = this.parseStatement()
|
||
|
return this.finishNode(node, "WhileStatement")
|
||
|
|
||
|
case tokTypes._with:
|
||
|
this.next()
|
||
|
node.object = this.parseParenExpression()
|
||
|
node.body = this.parseStatement()
|
||
|
return this.finishNode(node, "WithStatement")
|
||
|
|
||
|
case tokTypes.braceL:
|
||
|
return this.parseBlock()
|
||
|
|
||
|
case tokTypes.semi:
|
||
|
this.next()
|
||
|
return this.finishNode(node, "EmptyStatement")
|
||
|
|
||
|
case tokTypes._class:
|
||
|
return this.parseClass(true)
|
||
|
|
||
|
case tokTypes._import:
|
||
|
return this.parseImport()
|
||
|
|
||
|
case 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 === tokTypes.eof) return this.finishNode(node, "EmptyStatement")
|
||
|
return this.parseStatement()
|
||
|
} else if (starttype === tokTypes.name && expr.type === "Identifier" && this.eat(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(tokTypes.braceL)
|
||
|
var blockIndent = this.curIndent, line = this.curLineStart
|
||
|
node.body = []
|
||
|
while (!this.closes(tokTypes.braceR, blockIndent, line, true))
|
||
|
node.body.push(this$1.parseStatement())
|
||
|
this.popCx()
|
||
|
this.eat(tokTypes.braceR)
|
||
|
return this.finishNode(node, "BlockStatement")
|
||
|
}
|
||
|
|
||
|
lp$1.parseFor = function(node, init) {
|
||
|
node.init = init
|
||
|
node.test = node.update = null
|
||
|
if (this.eat(tokTypes.semi) && this.tok.type !== tokTypes.semi) node.test = this.parseExpression()
|
||
|
if (this.eat(tokTypes.semi) && this.tok.type !== tokTypes.parenR) node.update = this.parseExpression()
|
||
|
this.popCx()
|
||
|
this.expect(tokTypes.parenR)
|
||
|
node.body = this.parseStatement()
|
||
|
return this.finishNode(node, "ForStatement")
|
||
|
}
|
||
|
|
||
|
lp$1.parseForIn = function(node, init) {
|
||
|
var type = this.tok.type === tokTypes._in ? "ForInStatement" : "ForOfStatement"
|
||
|
this.next()
|
||
|
node.left = init
|
||
|
node.right = this.parseExpression()
|
||
|
this.popCx()
|
||
|
this.expect(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(tokTypes.eq) ? this$1.parseMaybeAssign(noIn) : null
|
||
|
node.declarations.push(this$1.finishNode(decl, "VariableDeclarator"))
|
||
|
} while (this.eat(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 === tokTypes.name
|
||
|
if (this.tok.type === tokTypes.name) node.id = this.parseIdent()
|
||
|
else if (isStatement) node.id = this.dummyIdent()
|
||
|
else node.id = null
|
||
|
node.superClass = this.eat(tokTypes._extends) ? this.parseExpression() : null
|
||
|
node.body = this.startNode()
|
||
|
node.body.body = []
|
||
|
this.pushCx()
|
||
|
var indent = this.curIndent + 1, line = this.curLineStart
|
||
|
this.eat(tokTypes.braceL)
|
||
|
if (this.curIndent + 1 < indent) { indent = this.curIndent; line = this.curLineStart }
|
||
|
while (!this.closes(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(tokTypes.star)
|
||
|
}
|
||
|
this$1.parsePropertyName(method)
|
||
|
if (isDummy(method.key)) { if (isDummy(this$1.parseMaybeAssign())) this$1.next(); this$1.eat(tokTypes.comma); continue }
|
||
|
if (method.key.type === "Identifier" && !method.computed && method.key.name === "static" &&
|
||
|
(this$1.tok.type != tokTypes.parenL && this$1.tok.type != tokTypes.braceL)) {
|
||
|
method.static = true
|
||
|
isGenerator = this$1.eat(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 !== 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 !== tokTypes.parenL && this$1.tok.type !== 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(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(tokTypes.star)
|
||
|
}
|
||
|
if (this.options.ecmaVersion >= 8) {
|
||
|
node.async = !!isAsync
|
||
|
}
|
||
|
if (isStatement == null) isStatement = this.tok.type === tokTypes.name
|
||
|
if (this.tok.type === 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(tokTypes.star)) {
|
||
|
node.source = this.eatContextual("from") ? this.parseExprAtom() : this.dummyString()
|
||
|
return this.finishNode(node, "ExportAllDeclaration")
|
||
|
}
|
||
|
if (this.eat(tokTypes._default)) {
|
||
|
// export default (function foo() {}) // This is FunctionExpression.
|
||
|
var isAsync
|
||
|
if (this.tok.type === 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 === 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 === tokTypes.string) {
|
||
|
node.specifiers = []
|
||
|
node.source = this.parseExprAtom()
|
||
|
node.kind = ''
|
||
|
} else {
|
||
|
var elt
|
||
|
if (this.tok.type === tokTypes.name && this.tok.value !== "from") {
|
||
|
elt = this.startNode()
|
||
|
elt.local = this.parseIdent()
|
||
|
this.finishNode(elt, "ImportDefaultSpecifier")
|
||
|
this.eat(tokTypes.comma)
|
||
|
}
|
||
|
node.specifiers = this.parseImportSpecifierList()
|
||
|
node.source = this.eatContextual("from") && this.tok.type == 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 === 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(tokTypes.braceL)
|
||
|
if (this.curLineStart > continuedLine) continuedLine = this.curLineStart
|
||
|
while (!this.closes(tokTypes.braceR, indent + (this.curLineStart <= continuedLine ? 1 : 0), line)) {
|
||
|
var elt$1 = this$1.startNode()
|
||
|
if (this$1.eat(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(tokTypes.comma)
|
||
|
}
|
||
|
this.eat(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(tokTypes.braceL)
|
||
|
if (this.curLineStart > continuedLine) continuedLine = this.curLineStart
|
||
|
while (!this.closes(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(tokTypes.comma)
|
||
|
}
|
||
|
this.eat(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 === tokTypes.comma) {
|
||
|
var node = this.startNodeAt(start)
|
||
|
node.expressions = [expr]
|
||
|
while (this.eat(tokTypes.comma)) node.expressions.push(this$1.parseMaybeAssign(noIn))
|
||
|
return this.finishNode(node, "SequenceExpression")
|
||
|
}
|
||
|
return expr
|
||
|
}
|
||
|
|
||
|
lp$2.parseParenExpression = function() {
|
||
|
this.pushCx()
|
||
|
this.expect(tokTypes.parenL)
|
||
|
var val = this.parseExpression()
|
||
|
this.popCx()
|
||
|
this.expect(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 != tokTypes.star && !this.tok.type.startsExpr)) {
|
||
|
node.delegate = false
|
||
|
node.argument = null
|
||
|
} else {
|
||
|
node.delegate = this.eat(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 === 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(tokTypes.question)) {
|
||
|
var node = this.startNodeAt(start)
|
||
|
node.test = expr
|
||
|
node.consequent = this.parseMaybeAssign()
|
||
|
node.alternate = this.expect(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 !== 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 === 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 === 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(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 == 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(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 == 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(tokTypes.bracketR)
|
||
|
base = this$1.finishNode(node$1, "MemberExpression")
|
||
|
} else if (!noCalls && this$1.tok.type == tokTypes.parenL) {
|
||
|
var exprList = this$1.parseExprList(tokTypes.parenR)
|
||
|
if (maybeAsyncArrow && this$1.eat(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 == 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 tokTypes._this:
|
||
|
case tokTypes._super:
|
||
|
var type = this.tok.type === tokTypes._this ? "ThisExpression" : "Super"
|
||
|
node = this.startNode()
|
||
|
this.next()
|
||
|
return this.finishNode(node, type)
|
||
|
|
||
|
case tokTypes.name:
|
||
|
var start = this.storeCurrentPos()
|
||
|
var id = this.parseIdent()
|
||
|
var isAsync = false
|
||
|
if (id.name === "async" && !this.canInsertSemicolon()) {
|
||
|
if (this.eat(tokTypes._function))
|
||
|
return this.parseFunction(this.startNodeAt(start), false, true)
|
||
|
if (this.tok.type === tokTypes.name) {
|
||
|
id = this.parseIdent()
|
||
|
isAsync = true
|
||
|
}
|
||
|
}
|
||
|
return this.eat(tokTypes.arrow) ? this.parseArrowExpression(this.startNodeAt(start), [id], isAsync) : id
|
||
|
|
||
|
case 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 tokTypes.num: case 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 tokTypes._null: case tokTypes._true: case tokTypes._false:
|
||
|
node = this.startNode()
|
||
|
node.value = this.tok.type === tokTypes._null ? null : this.tok.type === tokTypes._true
|
||
|
node.raw = this.tok.type.keyword
|
||
|
this.next()
|
||
|
return this.finishNode(node, "Literal")
|
||
|
|
||
|
case tokTypes.parenL:
|
||
|
var parenStart = this.storeCurrentPos()
|
||
|
this.next()
|
||
|
var inner = this.parseExpression()
|
||
|
this.expect(tokTypes.parenR)
|
||
|
if (this.eat(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 tokTypes.bracketL:
|
||
|
node = this.startNode()
|
||
|
node.elements = this.parseExprList(tokTypes.bracketR, true)
|
||
|
return this.finishNode(node, "ArrayExpression")
|
||
|
|
||
|
case tokTypes.braceL:
|
||
|
return this.parseObj()
|
||
|
|
||
|
case tokTypes._class:
|
||
|
return this.parseClass(false)
|
||
|
|
||
|
case tokTypes._function:
|
||
|
node = this.startNode()
|
||
|
this.next()
|
||
|
return this.parseFunction(node, false)
|
||
|
|
||
|
case tokTypes._new:
|
||
|
return this.parseNew()
|
||
|
|
||
|
case 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(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 == tokTypes.parenL) {
|
||
|
node.arguments = this.parseExprList(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 === 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(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(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(tokTypes.braceL)
|
||
|
if (this.curIndent + 1 < indent) { indent = this.curIndent; line = this.curLineStart }
|
||
|
while (!this.closes(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(tokTypes.star)
|
||
|
}
|
||
|
this$1.parsePropertyName(prop)
|
||
|
if (!prop.computed &&
|
||
|
prop.key.type === "Identifier" && prop.key.name === "async" && this$1.tok.type !== tokTypes.parenL &&
|
||
|
this$1.tok.type !== 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(tokTypes.comma); continue }
|
||
|
if (this$1.eat(tokTypes.colon)) {
|
||
|
prop.kind = "init"
|
||
|
prop.value = this$1.parseMaybeAssign()
|
||
|
} else if (this$1.options.ecmaVersion >= 6 && (this$1.tok.type === tokTypes.parenL || this$1.tok.type === 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 != tokTypes.comma && this$1.tok.type != 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(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(tokTypes.comma)
|
||
|
}
|
||
|
this.popCx()
|
||
|
if (!this.eat(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(tokTypes.bracketL)) {
|
||
|
prop.computed = true
|
||
|
prop.key = this.parseExpression()
|
||
|
this.expect(tokTypes.bracketR)
|
||
|
return
|
||
|
} else {
|
||
|
prop.computed = false
|
||
|
}
|
||
|
}
|
||
|
var key = (this.tok.type === tokTypes.num || this.tok.type === tokTypes.string) ? this.parseExprAtom() : this.parseIdent()
|
||
|
prop.key = key || this.dummyIdent()
|
||
|
}
|
||
|
|
||
|
lp$2.parsePropertyAccessor = function() {
|
||
|
if (this.tok.type === tokTypes.name || this.tok.type.keyword) return this.parseIdent()
|
||
|
}
|
||
|
|
||
|
lp$2.parseIdent = function() {
|
||
|
var name = this.tok.type === 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(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 !== 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 !== 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(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(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.
|
||
|
|
||
|
defaultOptions.tabSize = 4
|
||
|
|
||
|
function parse_dammit(input, options) {
|
||
|
var p = new LooseParser(input, options)
|
||
|
p.next()
|
||
|
return p.parseTopLevel()
|
||
|
}
|
||
|
|
||
|
addLooseExports(parse_dammit, LooseParser, pluginsLoose)
|
||
|
|
||
|
export { parse_dammit, LooseParser, pluginsLoose };
|