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1300 lines
44 KiB
JavaScript
1300 lines
44 KiB
JavaScript
(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}(g.acorn || (g.acorn = {})).loose = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(_dereq_,module,exports){
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"use strict";
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module.exports = typeof acorn != 'undefined' ? acorn : require("./acorn");
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},{}],2:[function(_dereq_,module,exports){
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"use strict";
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var _state = _dereq_("./state");
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var _parseutil = _dereq_("./parseutil");
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var _ = _dereq_("..");
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var lp = _state.LooseParser.prototype;
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lp.checkLVal = function (expr) {
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if (!expr) return expr;
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switch (expr.type) {
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case "Identifier":
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case "MemberExpression":
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return expr;
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case "ParenthesizedExpression":
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expr.expression = this.checkLVal(expr.expression);
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return expr;
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default:
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return this.dummyIdent();
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}
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};
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lp.parseExpression = function (noIn) {
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var start = this.storeCurrentPos();
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var expr = this.parseMaybeAssign(noIn);
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if (this.tok.type === _.tokTypes.comma) {
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var node = this.startNodeAt(start);
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node.expressions = [expr];
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while (this.eat(_.tokTypes.comma)) node.expressions.push(this.parseMaybeAssign(noIn));
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return this.finishNode(node, "SequenceExpression");
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}
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return expr;
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};
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lp.parseParenExpression = function () {
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this.pushCx();
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this.expect(_.tokTypes.parenL);
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var val = this.parseExpression();
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this.popCx();
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this.expect(_.tokTypes.parenR);
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return val;
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};
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lp.parseMaybeAssign = function (noIn) {
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var start = this.storeCurrentPos();
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var left = this.parseMaybeConditional(noIn);
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if (this.tok.type.isAssign) {
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var node = this.startNodeAt(start);
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node.operator = this.tok.value;
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node.left = this.tok.type === _.tokTypes.eq ? this.toAssignable(left) : this.checkLVal(left);
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this.next();
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node.right = this.parseMaybeAssign(noIn);
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return this.finishNode(node, "AssignmentExpression");
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}
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return left;
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};
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lp.parseMaybeConditional = function (noIn) {
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var start = this.storeCurrentPos();
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var expr = this.parseExprOps(noIn);
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if (this.eat(_.tokTypes.question)) {
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var node = this.startNodeAt(start);
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node.test = expr;
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node.consequent = this.parseMaybeAssign();
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node.alternate = this.expect(_.tokTypes.colon) ? this.parseMaybeAssign(noIn) : this.dummyIdent();
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return this.finishNode(node, "ConditionalExpression");
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}
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return expr;
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};
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lp.parseExprOps = function (noIn) {
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var start = this.storeCurrentPos();
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var indent = this.curIndent,
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line = this.curLineStart;
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return this.parseExprOp(this.parseMaybeUnary(noIn), start, -1, noIn, indent, line);
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};
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lp.parseExprOp = function (left, start, minPrec, noIn, indent, line) {
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if (this.curLineStart != line && this.curIndent < indent && this.tokenStartsLine()) return left;
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var prec = this.tok.type.binop;
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if (prec != null && (!noIn || this.tok.type !== _.tokTypes._in)) {
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if (prec > minPrec) {
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var node = this.startNodeAt(start);
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node.left = left;
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node.operator = this.tok.value;
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this.next();
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if (this.curLineStart != line && this.curIndent < indent && this.tokenStartsLine()) {
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node.right = this.dummyIdent();
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} else {
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var rightStart = this.storeCurrentPos();
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node.right = this.parseExprOp(this.parseMaybeUnary(noIn), rightStart, prec, noIn, indent, line);
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}
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this.finishNode(node, /&&|\|\|/.test(node.operator) ? "LogicalExpression" : "BinaryExpression");
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return this.parseExprOp(node, start, minPrec, noIn, indent, line);
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}
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}
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return left;
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};
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lp.parseMaybeUnary = function (noIn) {
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if (this.tok.type.prefix) {
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var node = this.startNode(),
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update = this.tok.type === _.tokTypes.incDec;
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node.operator = this.tok.value;
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node.prefix = true;
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this.next();
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node.argument = this.parseMaybeUnary(noIn);
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if (update) node.argument = this.checkLVal(node.argument);
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return this.finishNode(node, update ? "UpdateExpression" : "UnaryExpression");
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} else if (this.tok.type === _.tokTypes.ellipsis) {
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var node = this.startNode();
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this.next();
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node.argument = this.parseMaybeUnary(noIn);
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return this.finishNode(node, "SpreadElement");
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}
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var start = this.storeCurrentPos();
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var expr = this.parseExprSubscripts();
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while (this.tok.type.postfix && !this.canInsertSemicolon()) {
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var node = this.startNodeAt(start);
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node.operator = this.tok.value;
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node.prefix = false;
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node.argument = this.checkLVal(expr);
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this.next();
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expr = this.finishNode(node, "UpdateExpression");
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}
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return expr;
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};
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lp.parseExprSubscripts = function () {
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var start = this.storeCurrentPos();
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return this.parseSubscripts(this.parseExprAtom(), start, false, this.curIndent, this.curLineStart);
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};
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lp.parseSubscripts = function (base, start, noCalls, startIndent, line) {
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for (;;) {
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if (this.curLineStart != line && this.curIndent <= startIndent && this.tokenStartsLine()) {
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if (this.tok.type == _.tokTypes.dot && this.curIndent == startIndent) --startIndent;else return base;
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}
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if (this.eat(_.tokTypes.dot)) {
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var node = this.startNodeAt(start);
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node.object = base;
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if (this.curLineStart != line && this.curIndent <= startIndent && this.tokenStartsLine()) node.property = this.dummyIdent();else node.property = this.parsePropertyAccessor() || this.dummyIdent();
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node.computed = false;
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base = this.finishNode(node, "MemberExpression");
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} else if (this.tok.type == _.tokTypes.bracketL) {
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this.pushCx();
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this.next();
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var node = this.startNodeAt(start);
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node.object = base;
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node.property = this.parseExpression();
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node.computed = true;
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this.popCx();
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this.expect(_.tokTypes.bracketR);
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base = this.finishNode(node, "MemberExpression");
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} else if (!noCalls && this.tok.type == _.tokTypes.parenL) {
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var node = this.startNodeAt(start);
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node.callee = base;
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node.arguments = this.parseExprList(_.tokTypes.parenR);
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base = this.finishNode(node, "CallExpression");
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} else if (this.tok.type == _.tokTypes.backQuote) {
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var node = this.startNodeAt(start);
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node.tag = base;
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node.quasi = this.parseTemplate();
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base = this.finishNode(node, "TaggedTemplateExpression");
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} else {
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return base;
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}
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}
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};
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lp.parseExprAtom = function () {
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var node = undefined;
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switch (this.tok.type) {
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case _.tokTypes._this:
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case _.tokTypes._super:
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var type = this.tok.type === _.tokTypes._this ? "ThisExpression" : "Super";
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node = this.startNode();
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this.next();
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return this.finishNode(node, type);
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case _.tokTypes.name:
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var start = this.storeCurrentPos();
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var id = this.parseIdent();
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return this.eat(_.tokTypes.arrow) ? this.parseArrowExpression(this.startNodeAt(start), [id]) : id;
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case _.tokTypes.regexp:
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node = this.startNode();
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var val = this.tok.value;
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node.regex = { pattern: val.pattern, flags: val.flags };
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node.value = val.value;
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node.raw = this.input.slice(this.tok.start, this.tok.end);
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this.next();
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return this.finishNode(node, "Literal");
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case _.tokTypes.num:case _.tokTypes.string:
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node = this.startNode();
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node.value = this.tok.value;
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node.raw = this.input.slice(this.tok.start, this.tok.end);
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this.next();
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return this.finishNode(node, "Literal");
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case _.tokTypes._null:case _.tokTypes._true:case _.tokTypes._false:
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node = this.startNode();
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node.value = this.tok.type === _.tokTypes._null ? null : this.tok.type === _.tokTypes._true;
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node.raw = this.tok.type.keyword;
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this.next();
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return this.finishNode(node, "Literal");
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case _.tokTypes.parenL:
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var parenStart = this.storeCurrentPos();
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this.next();
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var inner = this.parseExpression();
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this.expect(_.tokTypes.parenR);
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if (this.eat(_.tokTypes.arrow)) {
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return this.parseArrowExpression(this.startNodeAt(parenStart), inner.expressions || (_parseutil.isDummy(inner) ? [] : [inner]));
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}
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if (this.options.preserveParens) {
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var par = this.startNodeAt(parenStart);
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par.expression = inner;
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inner = this.finishNode(par, "ParenthesizedExpression");
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}
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return inner;
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case _.tokTypes.bracketL:
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node = this.startNode();
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node.elements = this.parseExprList(_.tokTypes.bracketR, true);
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return this.finishNode(node, "ArrayExpression");
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case _.tokTypes.braceL:
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return this.parseObj();
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case _.tokTypes._class:
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return this.parseClass();
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case _.tokTypes._function:
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node = this.startNode();
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this.next();
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return this.parseFunction(node, false);
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case _.tokTypes._new:
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return this.parseNew();
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case _.tokTypes._yield:
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node = this.startNode();
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this.next();
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if (this.semicolon() || this.canInsertSemicolon() || this.tok.type != _.tokTypes.star && !this.tok.type.startsExpr) {
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node.delegate = false;
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node.argument = null;
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} else {
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node.delegate = this.eat(_.tokTypes.star);
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node.argument = this.parseMaybeAssign();
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}
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return this.finishNode(node, "YieldExpression");
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case _.tokTypes.backQuote:
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return this.parseTemplate();
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default:
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return this.dummyIdent();
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}
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};
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lp.parseNew = function () {
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var node = this.startNode(),
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startIndent = this.curIndent,
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line = this.curLineStart;
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var meta = this.parseIdent(true);
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if (this.options.ecmaVersion >= 6 && this.eat(_.tokTypes.dot)) {
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node.meta = meta;
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node.property = this.parseIdent(true);
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return this.finishNode(node, "MetaProperty");
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}
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var start = this.storeCurrentPos();
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node.callee = this.parseSubscripts(this.parseExprAtom(), start, true, startIndent, line);
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if (this.tok.type == _.tokTypes.parenL) {
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node.arguments = this.parseExprList(_.tokTypes.parenR);
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} else {
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node.arguments = [];
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}
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return this.finishNode(node, "NewExpression");
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};
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lp.parseTemplateElement = function () {
|
|
var elem = this.startNode();
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elem.value = {
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|
raw: this.input.slice(this.tok.start, this.tok.end).replace(/\r\n?/g, '\n'),
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cooked: this.tok.value
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};
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this.next();
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elem.tail = this.tok.type === _.tokTypes.backQuote;
|
|
return this.finishNode(elem, "TemplateElement");
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};
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lp.parseTemplate = function () {
|
|
var node = this.startNode();
|
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this.next();
|
|
node.expressions = [];
|
|
var curElt = this.parseTemplateElement();
|
|
node.quasis = [curElt];
|
|
while (!curElt.tail) {
|
|
this.next();
|
|
node.expressions.push(this.parseExpression());
|
|
if (this.expect(_.tokTypes.braceR)) {
|
|
curElt = this.parseTemplateElement();
|
|
} else {
|
|
curElt = this.startNode();
|
|
curElt.value = { cooked: '', raw: '' };
|
|
curElt.tail = true;
|
|
}
|
|
node.quasis.push(curElt);
|
|
}
|
|
this.expect(_.tokTypes.backQuote);
|
|
return this.finishNode(node, "TemplateLiteral");
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};
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|
|
lp.parseObj = function () {
|
|
var node = this.startNode();
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node.properties = [];
|
|
this.pushCx();
|
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var indent = this.curIndent + 1,
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line = this.curLineStart;
|
|
this.eat(_.tokTypes.braceL);
|
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if (this.curIndent + 1 < indent) {
|
|
indent = this.curIndent;line = this.curLineStart;
|
|
}
|
|
while (!this.closes(_.tokTypes.braceR, indent, line)) {
|
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var prop = this.startNode(),
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isGenerator = undefined,
|
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start = undefined;
|
|
if (this.options.ecmaVersion >= 6) {
|
|
start = this.storeCurrentPos();
|
|
prop.method = false;
|
|
prop.shorthand = false;
|
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isGenerator = this.eat(_.tokTypes.star);
|
|
}
|
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this.parsePropertyName(prop);
|
|
if (_parseutil.isDummy(prop.key)) {
|
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if (_parseutil.isDummy(this.parseMaybeAssign())) this.next();this.eat(_.tokTypes.comma);continue;
|
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}
|
|
if (this.eat(_.tokTypes.colon)) {
|
|
prop.kind = "init";
|
|
prop.value = this.parseMaybeAssign();
|
|
} else if (this.options.ecmaVersion >= 6 && (this.tok.type === _.tokTypes.parenL || this.tok.type === _.tokTypes.braceL)) {
|
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prop.kind = "init";
|
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prop.method = true;
|
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prop.value = this.parseMethod(isGenerator);
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|
} else if (this.options.ecmaVersion >= 5 && prop.key.type === "Identifier" && !prop.computed && (prop.key.name === "get" || prop.key.name === "set") && (this.tok.type != _.tokTypes.comma && this.tok.type != _.tokTypes.braceR)) {
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prop.kind = prop.key.name;
|
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this.parsePropertyName(prop);
|
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prop.value = this.parseMethod(false);
|
|
} else {
|
|
prop.kind = "init";
|
|
if (this.options.ecmaVersion >= 6) {
|
|
if (this.eat(_.tokTypes.eq)) {
|
|
var assign = this.startNodeAt(start);
|
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assign.operator = "=";
|
|
assign.left = prop.key;
|
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assign.right = this.parseMaybeAssign();
|
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prop.value = this.finishNode(assign, "AssignmentExpression");
|
|
} else {
|
|
prop.value = prop.key;
|
|
}
|
|
} else {
|
|
prop.value = this.dummyIdent();
|
|
}
|
|
prop.shorthand = true;
|
|
}
|
|
node.properties.push(this.finishNode(prop, "Property"));
|
|
this.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.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.parsePropertyAccessor = function () {
|
|
if (this.tok.type === _.tokTypes.name || this.tok.type.keyword) return this.parseIdent();
|
|
};
|
|
|
|
lp.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.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.toAssignable = function (node, binding) {
|
|
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.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.toAssignableList = function (exprList, binding) {
|
|
for (var i = 0; i < exprList.length; i++) {
|
|
exprList[i] = this.toAssignable(exprList[i], binding);
|
|
}return exprList;
|
|
};
|
|
|
|
lp.parseFunctionParams = function (params) {
|
|
params = this.parseExprList(_.tokTypes.parenR);
|
|
return this.toAssignableList(params, true);
|
|
};
|
|
|
|
lp.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.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.parseExprList = function (close, allowEmpty) {
|
|
this.pushCx();
|
|
var indent = this.curIndent,
|
|
line = this.curLineStart,
|
|
elts = [];
|
|
this.next(); // Opening bracket
|
|
while (!this.closes(close, indent + 1, line)) {
|
|
if (this.eat(_.tokTypes.comma)) {
|
|
elts.push(allowEmpty ? null : this.dummyIdent());
|
|
continue;
|
|
}
|
|
var elt = this.parseMaybeAssign();
|
|
if (_parseutil.isDummy(elt)) {
|
|
if (this.closes(close, indent, line)) break;
|
|
this.next();
|
|
} else {
|
|
elts.push(elt);
|
|
}
|
|
this.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;
|
|
};
|
|
|
|
},{"..":1,"./parseutil":4,"./state":5}],3:[function(_dereq_,module,exports){
|
|
// 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.
|
|
|
|
"use strict";
|
|
|
|
exports.__esModule = true;
|
|
exports.parse_dammit = parse_dammit;
|
|
|
|
function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }
|
|
|
|
var _ = _dereq_("..");
|
|
|
|
var acorn = _interopRequireWildcard(_);
|
|
|
|
var _state = _dereq_("./state");
|
|
|
|
_dereq_("./tokenize");
|
|
|
|
_dereq_("./statement");
|
|
|
|
_dereq_("./expression");
|
|
|
|
exports.LooseParser = _state.LooseParser;
|
|
exports.pluginsLoose = _state.pluginsLoose;
|
|
|
|
acorn.defaultOptions.tabSize = 4;
|
|
|
|
function parse_dammit(input, options) {
|
|
var p = new _state.LooseParser(input, options);
|
|
p.next();
|
|
return p.parseTopLevel();
|
|
}
|
|
|
|
acorn.parse_dammit = parse_dammit;
|
|
acorn.LooseParser = _state.LooseParser;
|
|
acorn.pluginsLoose = _state.pluginsLoose;
|
|
|
|
},{"..":1,"./expression":2,"./state":5,"./statement":6,"./tokenize":7}],4:[function(_dereq_,module,exports){
|
|
"use strict";
|
|
|
|
exports.__esModule = true;
|
|
exports.isDummy = isDummy;
|
|
|
|
function isDummy(node) {
|
|
return node.name == "✖";
|
|
}
|
|
|
|
},{}],5:[function(_dereq_,module,exports){
|
|
"use strict";
|
|
|
|
exports.__esModule = true;
|
|
|
|
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
|
|
|
|
var _ = _dereq_("..");
|
|
|
|
// Registered plugins
|
|
var pluginsLoose = {};
|
|
|
|
exports.pluginsLoose = pluginsLoose;
|
|
|
|
var LooseParser = (function () {
|
|
function LooseParser(input, options) {
|
|
_classCallCheck(this, LooseParser);
|
|
|
|
this.toks = _.tokenizer(input, options);
|
|
this.options = this.toks.options;
|
|
this.input = this.toks.input;
|
|
this.tok = this.last = { type: _.tokTypes.eof, start: 0, end: 0 };
|
|
if (this.options.locations) {
|
|
var here = this.toks.curPosition();
|
|
this.tok.loc = new _.SourceLocation(this.toks, here, here);
|
|
}
|
|
this.ahead = []; // Tokens ahead
|
|
this.context = []; // Indentation contexted
|
|
this.curIndent = 0;
|
|
this.curLineStart = 0;
|
|
this.nextLineStart = this.lineEnd(this.curLineStart) + 1;
|
|
// Load plugins
|
|
this.options.pluginsLoose = options.pluginsLoose || {};
|
|
this.loadPlugins(this.options.pluginsLoose);
|
|
}
|
|
|
|
LooseParser.prototype.startNode = function startNode() {
|
|
return new _.Node(this.toks, this.tok.start, this.options.locations ? this.tok.loc.start : null);
|
|
};
|
|
|
|
LooseParser.prototype.storeCurrentPos = function storeCurrentPos() {
|
|
return this.options.locations ? [this.tok.start, this.tok.loc.start] : this.tok.start;
|
|
};
|
|
|
|
LooseParser.prototype.startNodeAt = function startNodeAt(pos) {
|
|
if (this.options.locations) {
|
|
return new _.Node(this.toks, pos[0], pos[1]);
|
|
} else {
|
|
return new _.Node(this.toks, pos);
|
|
}
|
|
};
|
|
|
|
LooseParser.prototype.finishNode = function finishNode(node, type) {
|
|
node.type = type;
|
|
node.end = this.last.end;
|
|
if (this.options.locations) node.loc.end = this.last.loc.end;
|
|
if (this.options.ranges) node.range[1] = this.last.end;
|
|
return node;
|
|
};
|
|
|
|
LooseParser.prototype.dummyNode = function dummyNode(type) {
|
|
var dummy = this.startNode();
|
|
dummy.type = type;
|
|
dummy.end = dummy.start;
|
|
if (this.options.locations) dummy.loc.end = dummy.loc.start;
|
|
if (this.options.ranges) dummy.range[1] = dummy.start;
|
|
this.last = { type: _.tokTypes.name, start: dummy.start, end: dummy.start, loc: dummy.loc };
|
|
return dummy;
|
|
};
|
|
|
|
LooseParser.prototype.dummyIdent = function dummyIdent() {
|
|
var dummy = this.dummyNode("Identifier");
|
|
dummy.name = "✖";
|
|
return dummy;
|
|
};
|
|
|
|
LooseParser.prototype.dummyString = function dummyString() {
|
|
var dummy = this.dummyNode("Literal");
|
|
dummy.value = dummy.raw = "✖";
|
|
return dummy;
|
|
};
|
|
|
|
LooseParser.prototype.eat = function eat(type) {
|
|
if (this.tok.type === type) {
|
|
this.next();
|
|
return true;
|
|
} else {
|
|
return false;
|
|
}
|
|
};
|
|
|
|
LooseParser.prototype.isContextual = function isContextual(name) {
|
|
return this.tok.type === _.tokTypes.name && this.tok.value === name;
|
|
};
|
|
|
|
LooseParser.prototype.eatContextual = function eatContextual(name) {
|
|
return this.tok.value === name && this.eat(_.tokTypes.name);
|
|
};
|
|
|
|
LooseParser.prototype.canInsertSemicolon = function canInsertSemicolon() {
|
|
return this.tok.type === _.tokTypes.eof || this.tok.type === _.tokTypes.braceR || _.lineBreak.test(this.input.slice(this.last.end, this.tok.start));
|
|
};
|
|
|
|
LooseParser.prototype.semicolon = function semicolon() {
|
|
return this.eat(_.tokTypes.semi);
|
|
};
|
|
|
|
LooseParser.prototype.expect = function expect(type) {
|
|
if (this.eat(type)) return true;
|
|
for (var i = 1; i <= 2; i++) {
|
|
if (this.lookAhead(i).type == type) {
|
|
for (var j = 0; j < i; j++) {
|
|
this.next();
|
|
}return true;
|
|
}
|
|
}
|
|
};
|
|
|
|
LooseParser.prototype.pushCx = function pushCx() {
|
|
this.context.push(this.curIndent);
|
|
};
|
|
|
|
LooseParser.prototype.popCx = function popCx() {
|
|
this.curIndent = this.context.pop();
|
|
};
|
|
|
|
LooseParser.prototype.lineEnd = function lineEnd(pos) {
|
|
while (pos < this.input.length && !_.isNewLine(this.input.charCodeAt(pos))) ++pos;
|
|
return pos;
|
|
};
|
|
|
|
LooseParser.prototype.indentationAfter = function indentationAfter(pos) {
|
|
for (var count = 0;; ++pos) {
|
|
var ch = this.input.charCodeAt(pos);
|
|
if (ch === 32) ++count;else if (ch === 9) count += this.options.tabSize;else return count;
|
|
}
|
|
};
|
|
|
|
LooseParser.prototype.closes = function closes(closeTok, indent, line, blockHeuristic) {
|
|
if (this.tok.type === closeTok || this.tok.type === _.tokTypes.eof) return true;
|
|
return line != this.curLineStart && this.curIndent < indent && this.tokenStartsLine() && (!blockHeuristic || this.nextLineStart >= this.input.length || this.indentationAfter(this.nextLineStart) < indent);
|
|
};
|
|
|
|
LooseParser.prototype.tokenStartsLine = function tokenStartsLine() {
|
|
for (var p = this.tok.start - 1; p >= this.curLineStart; --p) {
|
|
var ch = this.input.charCodeAt(p);
|
|
if (ch !== 9 && ch !== 32) return false;
|
|
}
|
|
return true;
|
|
};
|
|
|
|
LooseParser.prototype.extend = function extend(name, f) {
|
|
this[name] = f(this[name]);
|
|
};
|
|
|
|
LooseParser.prototype.loadPlugins = function loadPlugins(pluginConfigs) {
|
|
for (var _name in pluginConfigs) {
|
|
var plugin = pluginsLoose[_name];
|
|
if (!plugin) throw new Error("Plugin '" + _name + "' not found");
|
|
plugin(this, pluginConfigs[_name]);
|
|
}
|
|
};
|
|
|
|
return LooseParser;
|
|
})();
|
|
|
|
exports.LooseParser = LooseParser;
|
|
|
|
},{"..":1}],6:[function(_dereq_,module,exports){
|
|
"use strict";
|
|
|
|
var _state = _dereq_("./state");
|
|
|
|
var _parseutil = _dereq_("./parseutil");
|
|
|
|
var _ = _dereq_("..");
|
|
|
|
var lp = _state.LooseParser.prototype;
|
|
|
|
lp.parseTopLevel = function () {
|
|
var node = this.startNodeAt(this.options.locations ? [0, _.getLineInfo(this.input, 0)] : 0);
|
|
node.body = [];
|
|
while (this.tok.type !== _.tokTypes.eof) node.body.push(this.parseStatement());
|
|
this.last = this.tok;
|
|
if (this.options.ecmaVersion >= 6) {
|
|
node.sourceType = this.options.sourceType;
|
|
}
|
|
return this.finishNode(node, "Program");
|
|
};
|
|
|
|
lp.parseStatement = function () {
|
|
var starttype = this.tok.type,
|
|
node = this.startNode();
|
|
|
|
switch (starttype) {
|
|
case _.tokTypes._break:case _.tokTypes._continue:
|
|
this.next();
|
|
var isBreak = starttype === _.tokTypes._break;
|
|
if (this.semicolon() || this.canInsertSemicolon()) {
|
|
node.label = null;
|
|
} else {
|
|
node.label = this.tok.type === _.tokTypes.name ? this.parseIdent() : null;
|
|
this.semicolon();
|
|
}
|
|
return this.finishNode(node, isBreak ? "BreakStatement" : "ContinueStatement");
|
|
|
|
case _.tokTypes._debugger:
|
|
this.next();
|
|
this.semicolon();
|
|
return this.finishNode(node, "DebuggerStatement");
|
|
|
|
case _.tokTypes._do:
|
|
this.next();
|
|
node.body = this.parseStatement();
|
|
node.test = this.eat(_.tokTypes._while) ? this.parseParenExpression() : this.dummyIdent();
|
|
this.semicolon();
|
|
return this.finishNode(node, "DoWhileStatement");
|
|
|
|
case _.tokTypes._for:
|
|
this.next();
|
|
this.pushCx();
|
|
this.expect(_.tokTypes.parenL);
|
|
if (this.tok.type === _.tokTypes.semi) return this.parseFor(node, null);
|
|
if (this.tok.type === _.tokTypes._var || this.tok.type === _.tokTypes._let || this.tok.type === _.tokTypes._const) {
|
|
var _init = this.parseVar(true);
|
|
if (_init.declarations.length === 1 && (this.tok.type === _.tokTypes._in || this.isContextual("of"))) {
|
|
return this.parseForIn(node, _init);
|
|
}
|
|
return this.parseFor(node, _init);
|
|
}
|
|
var init = this.parseExpression(true);
|
|
if (this.tok.type === _.tokTypes._in || this.isContextual("of")) return this.parseForIn(node, this.toAssignable(init));
|
|
return this.parseFor(node, init);
|
|
|
|
case _.tokTypes._function:
|
|
this.next();
|
|
return this.parseFunction(node, true);
|
|
|
|
case _.tokTypes._if:
|
|
this.next();
|
|
node.test = this.parseParenExpression();
|
|
node.consequent = this.parseStatement();
|
|
node.alternate = this.eat(_.tokTypes._else) ? this.parseStatement() : null;
|
|
return this.finishNode(node, "IfStatement");
|
|
|
|
case _.tokTypes._return:
|
|
this.next();
|
|
if (this.eat(_.tokTypes.semi) || this.canInsertSemicolon()) node.argument = null;else {
|
|
node.argument = this.parseExpression();this.semicolon();
|
|
}
|
|
return this.finishNode(node, "ReturnStatement");
|
|
|
|
case _.tokTypes._switch:
|
|
var blockIndent = this.curIndent,
|
|
line = this.curLineStart;
|
|
this.next();
|
|
node.discriminant = this.parseParenExpression();
|
|
node.cases = [];
|
|
this.pushCx();
|
|
this.expect(_.tokTypes.braceL);
|
|
|
|
var cur = undefined;
|
|
while (!this.closes(_.tokTypes.braceR, blockIndent, line, true)) {
|
|
if (this.tok.type === _.tokTypes._case || this.tok.type === _.tokTypes._default) {
|
|
var isCase = this.tok.type === _.tokTypes._case;
|
|
if (cur) this.finishNode(cur, "SwitchCase");
|
|
node.cases.push(cur = this.startNode());
|
|
cur.consequent = [];
|
|
this.next();
|
|
if (isCase) cur.test = this.parseExpression();else cur.test = null;
|
|
this.expect(_.tokTypes.colon);
|
|
} else {
|
|
if (!cur) {
|
|
node.cases.push(cur = this.startNode());
|
|
cur.consequent = [];
|
|
cur.test = null;
|
|
}
|
|
cur.consequent.push(this.parseStatement());
|
|
}
|
|
}
|
|
if (cur) this.finishNode(cur, "SwitchCase");
|
|
this.popCx();
|
|
this.eat(_.tokTypes.braceR);
|
|
return this.finishNode(node, "SwitchStatement");
|
|
|
|
case _.tokTypes._throw:
|
|
this.next();
|
|
node.argument = this.parseExpression();
|
|
this.semicolon();
|
|
return this.finishNode(node, "ThrowStatement");
|
|
|
|
case _.tokTypes._try:
|
|
this.next();
|
|
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._let:
|
|
case _.tokTypes._const:
|
|
return this.parseVar();
|
|
|
|
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:
|
|
var expr = this.parseExpression();
|
|
if (_parseutil.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.parseBlock = function () {
|
|
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.parseStatement());
|
|
this.popCx();
|
|
this.eat(_.tokTypes.braceR);
|
|
return this.finishNode(node, "BlockStatement");
|
|
};
|
|
|
|
lp.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.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.parseVar = function (noIn) {
|
|
var node = this.startNode();
|
|
node.kind = this.tok.type.keyword;
|
|
this.next();
|
|
node.declarations = [];
|
|
do {
|
|
var decl = this.startNode();
|
|
decl.id = this.options.ecmaVersion >= 6 ? this.toAssignable(this.parseExprAtom(), true) : this.parseIdent();
|
|
decl.init = this.eat(_.tokTypes.eq) ? this.parseMaybeAssign(noIn) : null;
|
|
node.declarations.push(this.finishNode(decl, "VariableDeclarator"));
|
|
} while (this.eat(_.tokTypes.comma));
|
|
if (!node.declarations.length) {
|
|
var decl = this.startNode();
|
|
decl.id = this.dummyIdent();
|
|
node.declarations.push(this.finishNode(decl, "VariableDeclarator"));
|
|
}
|
|
if (!noIn) this.semicolon();
|
|
return this.finishNode(node, "VariableDeclaration");
|
|
};
|
|
|
|
lp.parseClass = function (isStatement) {
|
|
var node = this.startNode();
|
|
this.next();
|
|
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.semicolon()) continue;
|
|
var method = this.startNode(),
|
|
isGenerator = undefined;
|
|
if (this.options.ecmaVersion >= 6) {
|
|
method["static"] = false;
|
|
isGenerator = this.eat(_.tokTypes.star);
|
|
}
|
|
this.parsePropertyName(method);
|
|
if (_parseutil.isDummy(method.key)) {
|
|
if (_parseutil.isDummy(this.parseMaybeAssign())) this.next();this.eat(_.tokTypes.comma);continue;
|
|
}
|
|
if (method.key.type === "Identifier" && !method.computed && method.key.name === "static" && (this.tok.type != _.tokTypes.parenL && this.tok.type != _.tokTypes.braceL)) {
|
|
method["static"] = true;
|
|
isGenerator = this.eat(_.tokTypes.star);
|
|
this.parsePropertyName(method);
|
|
} else {
|
|
method["static"] = false;
|
|
}
|
|
if (this.options.ecmaVersion >= 5 && method.key.type === "Identifier" && !method.computed && (method.key.name === "get" || method.key.name === "set") && this.tok.type !== _.tokTypes.parenL && this.tok.type !== _.tokTypes.braceL) {
|
|
method.kind = method.key.name;
|
|
this.parsePropertyName(method);
|
|
method.value = this.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.parseMethod(isGenerator);
|
|
}
|
|
node.body.body.push(this.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.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.parseExport = function () {
|
|
var node = this.startNode();
|
|
this.next();
|
|
if (this.eat(_.tokTypes.star)) {
|
|
node.source = this.eatContextual("from") ? this.parseExprAtom() : null;
|
|
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) {
|
|
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.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 = undefined;
|
|
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.parseImportSpecifierList = function () {
|
|
var elts = [];
|
|
if (this.tok.type === _.tokTypes.star) {
|
|
var elt = this.startNode();
|
|
this.next();
|
|
if (this.eatContextual("as")) elt.local = this.parseIdent();
|
|
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 = this.startNode();
|
|
if (this.eat(_.tokTypes.star)) {
|
|
elt.local = this.eatContextual("as") ? this.parseIdent() : this.dummyIdent();
|
|
this.finishNode(elt, "ImportNamespaceSpecifier");
|
|
} else {
|
|
if (this.isContextual("from")) break;
|
|
elt.imported = this.parseIdent();
|
|
if (_parseutil.isDummy(elt.imported)) break;
|
|
elt.local = this.eatContextual("as") ? this.parseIdent() : elt.imported;
|
|
this.finishNode(elt, "ImportSpecifier");
|
|
}
|
|
elts.push(elt);
|
|
this.eat(_.tokTypes.comma);
|
|
}
|
|
this.eat(_.tokTypes.braceR);
|
|
this.popCx();
|
|
}
|
|
return elts;
|
|
};
|
|
|
|
lp.parseExportSpecifierList = function () {
|
|
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.isContextual("from")) break;
|
|
var elt = this.startNode();
|
|
elt.local = this.parseIdent();
|
|
if (_parseutil.isDummy(elt.local)) break;
|
|
elt.exported = this.eatContextual("as") ? this.parseIdent() : elt.local;
|
|
this.finishNode(elt, "ExportSpecifier");
|
|
elts.push(elt);
|
|
this.eat(_.tokTypes.comma);
|
|
}
|
|
this.eat(_.tokTypes.braceR);
|
|
this.popCx();
|
|
return elts;
|
|
};
|
|
|
|
},{"..":1,"./parseutil":4,"./state":5}],7:[function(_dereq_,module,exports){
|
|
"use strict";
|
|
|
|
var _ = _dereq_("..");
|
|
|
|
var _state = _dereq_("./state");
|
|
|
|
var lp = _state.LooseParser.prototype;
|
|
|
|
function isSpace(ch) {
|
|
return ch < 14 && ch > 8 || ch === 32 || ch === 160 || _.isNewLine(ch);
|
|
}
|
|
|
|
lp.next = function () {
|
|
this.last = this.tok;
|
|
if (this.ahead.length) this.tok = this.ahead.shift();else this.tok = this.readToken();
|
|
|
|
if (this.tok.start >= this.nextLineStart) {
|
|
while (this.tok.start >= this.nextLineStart) {
|
|
this.curLineStart = this.nextLineStart;
|
|
this.nextLineStart = this.lineEnd(this.curLineStart) + 1;
|
|
}
|
|
this.curIndent = this.indentationAfter(this.curLineStart);
|
|
}
|
|
};
|
|
|
|
lp.readToken = function () {
|
|
for (;;) {
|
|
try {
|
|
this.toks.next();
|
|
if (this.toks.type === _.tokTypes.dot && this.input.substr(this.toks.end, 1) === "." && this.options.ecmaVersion >= 6) {
|
|
this.toks.end++;
|
|
this.toks.type = _.tokTypes.ellipsis;
|
|
}
|
|
return new _.Token(this.toks);
|
|
} catch (e) {
|
|
if (!(e instanceof SyntaxError)) throw e;
|
|
|
|
// Try to skip some text, based on the error message, and then continue
|
|
var msg = e.message,
|
|
pos = e.raisedAt,
|
|
replace = true;
|
|
if (/unterminated/i.test(msg)) {
|
|
pos = this.lineEnd(e.pos + 1);
|
|
if (/string/.test(msg)) {
|
|
replace = { start: e.pos, end: pos, type: _.tokTypes.string, value: this.input.slice(e.pos + 1, pos) };
|
|
} else if (/regular expr/i.test(msg)) {
|
|
var re = this.input.slice(e.pos, pos);
|
|
try {
|
|
re = new RegExp(re);
|
|
} catch (e) {}
|
|
replace = { start: e.pos, end: pos, type: _.tokTypes.regexp, value: re };
|
|
} else if (/template/.test(msg)) {
|
|
replace = { start: e.pos, end: pos,
|
|
type: _.tokTypes.template,
|
|
value: this.input.slice(e.pos, pos) };
|
|
} else {
|
|
replace = false;
|
|
}
|
|
} else if (/invalid (unicode|regexp|number)|expecting unicode|octal literal|is reserved|directly after number|expected number in radix/i.test(msg)) {
|
|
while (pos < this.input.length && !isSpace(this.input.charCodeAt(pos))) ++pos;
|
|
} else if (/character escape|expected hexadecimal/i.test(msg)) {
|
|
while (pos < this.input.length) {
|
|
var ch = this.input.charCodeAt(pos++);
|
|
if (ch === 34 || ch === 39 || _.isNewLine(ch)) break;
|
|
}
|
|
} else if (/unexpected character/i.test(msg)) {
|
|
pos++;
|
|
replace = false;
|
|
} else if (/regular expression/i.test(msg)) {
|
|
replace = true;
|
|
} else {
|
|
throw e;
|
|
}
|
|
this.resetTo(pos);
|
|
if (replace === true) replace = { start: pos, end: pos, type: _.tokTypes.name, value: "✖" };
|
|
if (replace) {
|
|
if (this.options.locations) replace.loc = new _.SourceLocation(this.toks, _.getLineInfo(this.input, replace.start), _.getLineInfo(this.input, replace.end));
|
|
return replace;
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
lp.resetTo = function (pos) {
|
|
this.toks.pos = pos;
|
|
var ch = this.input.charAt(pos - 1);
|
|
this.toks.exprAllowed = !ch || /[\[\{\(,;:?\/*=+\-~!|&%^<>]/.test(ch) || /[enwfd]/.test(ch) && /\b(keywords|case|else|return|throw|new|in|(instance|type)of|delete|void)$/.test(this.input.slice(pos - 10, pos));
|
|
|
|
if (this.options.locations) {
|
|
this.toks.curLine = 1;
|
|
this.toks.lineStart = _.lineBreakG.lastIndex = 0;
|
|
var match = undefined;
|
|
while ((match = _.lineBreakG.exec(this.input)) && match.index < pos) {
|
|
++this.toks.curLine;
|
|
this.toks.lineStart = match.index + match[0].length;
|
|
}
|
|
}
|
|
};
|
|
|
|
lp.lookAhead = function (n) {
|
|
while (n > this.ahead.length) this.ahead.push(this.readToken());
|
|
return this.ahead[n - 1];
|
|
};
|
|
|
|
},{"..":1,"./state":5}]},{},[3])(3)
|
|
}); |