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1261 lines
40 KiB
1261 lines
40 KiB
import acorn, { SourceLocation, tokTypes, tokenizer, Node, lineBreak, isNewLine, getLineInfo, Token, lineBreakG } from './acorn.js'; |
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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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|
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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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// 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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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() |
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node.handler = null |
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if (this.tok.type === tokTypes._catch) { |
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var clause = this.startNode() |
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this.next() |
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this.expect(tokTypes.parenL) |
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clause.param = this.toAssignable(this.parseExprAtom(), true) |
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this.expect(tokTypes.parenR) |
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clause.body = this.parseBlock() |
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node.handler = this.finishNode(clause, "CatchClause") |
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} |
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node.finalizer = this.eat(tokTypes._finally) ? this.parseBlock() : null |
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if (!node.handler && !node.finalizer) return node.block |
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return this.finishNode(node, "TryStatement") |
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case tokTypes._var: |
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case tokTypes._const: |
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return this.parseVar(false, kind || this.tok.value) |
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case tokTypes._while: |
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this.next() |
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node.test = this.parseParenExpression() |
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node.body = this.parseStatement() |
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return this.finishNode(node, "WhileStatement") |
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case tokTypes._with: |
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this.next() |
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node.object = this.parseParenExpression() |
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node.body = this.parseStatement() |
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return this.finishNode(node, "WithStatement") |
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|
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case tokTypes.braceL: |
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return this.parseBlock() |
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case tokTypes.semi: |
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this.next() |
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return this.finishNode(node, "EmptyStatement") |
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|
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case tokTypes._class: |
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return this.parseClass(true) |
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case tokTypes._import: |
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return this.parseImport() |
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case tokTypes._export: |
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return this.parseExport() |
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default: |
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var expr = this.parseExpression() |
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if (isDummy(expr)) { |
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this.next() |
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if (this.tok.type === tokTypes.eof) return this.finishNode(node, "EmptyStatement") |
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return this.parseStatement() |
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} else if (starttype === tokTypes.name && expr.type === "Identifier" && this.eat(tokTypes.colon)) { |
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node.body = this.parseStatement() |
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node.label = expr |
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return this.finishNode(node, "LabeledStatement") |
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} else { |
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node.expression = expr |
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this.semicolon() |
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return this.finishNode(node, "ExpressionStatement") |
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} |
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} |
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} |
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lp$1.parseBlock = function() { |
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var this$1 = this; |
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var node = this.startNode() |
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this.pushCx() |
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this.expect(tokTypes.braceL) |
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var blockIndent = this.curIndent, line = this.curLineStart |
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node.body = [] |
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while (!this.closes(tokTypes.braceR, blockIndent, line, true)) |
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node.body.push(this$1.parseStatement()) |
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this.popCx() |
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this.eat(tokTypes.braceR) |
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return this.finishNode(node, "BlockStatement") |
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} |
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lp$1.parseFor = function(node, init) { |
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node.init = init |
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node.test = node.update = null |
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if (this.eat(tokTypes.semi) && this.tok.type !== tokTypes.semi) node.test = this.parseExpression() |
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if (this.eat(tokTypes.semi) && this.tok.type !== tokTypes.parenR) node.update = this.parseExpression() |
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this.popCx() |
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this.expect(tokTypes.parenR) |
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node.body = this.parseStatement() |
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return this.finishNode(node, "ForStatement") |
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} |
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lp$1.parseForIn = function(node, init) { |
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var type = this.tok.type === tokTypes._in ? "ForInStatement" : "ForOfStatement" |
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this.next() |
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node.left = init |
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node.right = this.parseExpression() |
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this.popCx() |
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this.expect(tokTypes.parenR) |
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node.body = this.parseStatement() |
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return this.finishNode(node, type) |
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} |
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lp$1.parseVar = function(noIn, kind) { |
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var this$1 = this; |
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var node = this.startNode() |
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node.kind = kind |
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this.next() |
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node.declarations = [] |
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do { |
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var decl = this$1.startNode() |
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decl.id = this$1.options.ecmaVersion >= 6 ? this$1.toAssignable(this$1.parseExprAtom(), true) : this$1.parseIdent() |
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decl.init = this$1.eat(tokTypes.eq) ? this$1.parseMaybeAssign(noIn) : null |
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node.declarations.push(this$1.finishNode(decl, "VariableDeclarator")) |
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} while (this.eat(tokTypes.comma)) |
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if (!node.declarations.length) { |
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var decl$1 = this.startNode() |
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decl$1.id = this.dummyIdent() |
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node.declarations.push(this.finishNode(decl$1, "VariableDeclarator")) |
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} |
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if (!noIn) this.semicolon() |
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return this.finishNode(node, "VariableDeclaration") |
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} |
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|
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lp$1.parseClass = function(isStatement) { |
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var this$1 = this; |
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|
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var node = this.startNode() |
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this.next() |
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if (this.tok.type === tokTypes.name) node.id = this.parseIdent() |
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else if (isStatement) node.id = this.dummyIdent() |
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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 |
|
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 (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 && ( |
|
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) |
|
} |
|
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) { |
|
this.initFunction(node) |
|
if (this.options.ecmaVersion >= 6) { |
|
node.generator = this.eat(tokTypes.star) |
|
} |
|
if (this.tok.type === tokTypes.name) node.id = this.parseIdent() |
|
else if (isStatement) node.id = this.dummyIdent() |
|
node.params = this.parseFunctionParams() |
|
node.body = this.parseBlock() |
|
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)) { |
|
var expr = this.parseMaybeAssign() |
|
if (expr.id) { |
|
switch (expr.type) { |
|
case "FunctionExpression": expr.type = "FunctionDeclaration"; break |
|
case "ClassExpression": expr.type = "ClassDeclaration"; break |
|
} |
|
} |
|
node.declaration = expr |
|
this.semicolon() |
|
return this.finishNode(node, "ExportDefaultDeclaration") |
|
} |
|
if (this.tok.type.keyword || this.toks.isLet()) { |
|
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.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 |
|
} |
|
|
|
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 node$2 = this$1.startNodeAt(start) |
|
node$2.callee = base |
|
node$2.arguments = this$1.parseExprList(tokTypes.parenR) |
|
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() |
|
return this.eat(tokTypes.arrow) ? this.parseArrowExpression(this.startNodeAt(start), [id]) : 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)) { |
|
return this.parseArrowExpression(this.startNodeAt(parenStart), inner.expressions || (isDummy(inner) ? [] : [inner])) |
|
} |
|
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() |
|
|
|
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, 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 (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) |
|
} 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 |
|
} |
|
} |
|
|
|
// 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) { |
|
var node = this.startNode() |
|
this.initFunction(node) |
|
node.params = this.parseFunctionParams() |
|
node.generator = isGenerator || false |
|
node.expression = this.options.ecmaVersion >= 6 && this.tok.type !== tokTypes.braceL |
|
node.body = node.expression ? this.parseMaybeAssign() : this.parseBlock() |
|
return this.finishNode(node, "FunctionExpression") |
|
} |
|
|
|
lp$2.parseArrowExpression = function(node, params) { |
|
this.initFunction(node) |
|
node.params = this.toAssignableList(params, true) |
|
node.expression = this.tok.type !== tokTypes.braceL |
|
node.body = node.expression ? this.parseMaybeAssign() : this.parseBlock() |
|
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 |
|
} |
|
|
|
acorn.defaultOptions.tabSize = 4 |
|
|
|
function parse_dammit(input, options) { |
|
var p = new LooseParser(input, options) |
|
p.next() |
|
return p.parseTopLevel() |
|
} |
|
|
|
acorn.parse_dammit = parse_dammit |
|
acorn.LooseParser = LooseParser |
|
acorn.pluginsLoose = pluginsLoose |
|
|
|
export { parse_dammit, LooseParser, pluginsLoose }; |