mozilla
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gecko-dev
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gecko-dev/devtools/shared/acorn/acorn_loose.js

1302 строки
44 KiB
JavaScript
Исходник Ответственный История

(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){
"use strict";
module.exports = typeof acorn != 'undefined' ? acorn : require("devtools/shared/acorn/acorn");
},{}],2:[function(_dereq_,module,exports){
"use strict";
var _state = _dereq_("./state");
var _parseutil = _dereq_("./parseutil");
var _ = _dereq_("..");
var lp = _state.LooseParser.prototype;
lp.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.parseExpression = function (noIn) {
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.parseMaybeAssign(noIn));
return this.finishNode(node, "SequenceExpression");
}
return expr;
};
lp.parseParenExpression = function () {
this.pushCx();
this.expect(_.tokTypes.parenL);
var val = this.parseExpression();
this.popCx();
this.expect(_.tokTypes.parenR);
return val;
};
lp.parseMaybeAssign = function (noIn) {
var start = this.storeCurrentPos();
var left = this.parseMaybeConditional(noIn);
if (this.tok.type.isAssign) {
var node = this.startNodeAt(start);
node.operator = this.tok.value;
node.left = this.tok.type === _.tokTypes.eq ? this.toAssignable(left) : this.checkLVal(left);
this.next();
node.right = this.parseMaybeAssign(noIn);
return this.finishNode(node, "AssignmentExpression");
}
return left;
};
lp.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.parseExprOps = function (noIn) {
var start = this.storeCurrentPos();
var indent = this.curIndent,
line = this.curLineStart;
return this.parseExprOp(this.parseMaybeUnary(noIn), start, -1, noIn, indent, line);
};
lp.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(noIn), 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.parseMaybeUnary = function (noIn) {
if (this.tok.type.prefix) {
var node = this.startNode(),
update = this.tok.type === _.tokTypes.incDec;
node.operator = this.tok.value;
node.prefix = true;
this.next();
node.argument = this.parseMaybeUnary(noIn);
if (update) node.argument = this.checkLVal(node.argument);
return this.finishNode(node, update ? "UpdateExpression" : "UnaryExpression");
} else if (this.tok.type === _.tokTypes.ellipsis) {
var node = this.startNode();
this.next();
node.argument = this.parseMaybeUnary(noIn);
return this.finishNode(node, "SpreadElement");
}
var start = this.storeCurrentPos();
var expr = this.parseExprSubscripts();
while (this.tok.type.postfix && !this.canInsertSemicolon()) {
var node = this.startNodeAt(start);
node.operator = this.tok.value;
node.prefix = false;
node.argument = this.checkLVal(expr);
this.next();
expr = this.finishNode(node, "UpdateExpression");
}
return expr;
};
lp.parseExprSubscripts = function () {
var start = this.storeCurrentPos();
return this.parseSubscripts(this.parseExprAtom(), start, false, this.curIndent, this.curLineStart);
};
lp.parseSubscripts = function (base, start, noCalls, startIndent, line) {
for (;;) {
if (this.curLineStart != line && this.curIndent <= startIndent && this.tokenStartsLine()) {
if (this.tok.type == _.tokTypes.dot && this.curIndent == startIndent) --startIndent;else return base;
}
if (this.eat(_.tokTypes.dot)) {
var node = this.startNodeAt(start);
node.object = base;
if (this.curLineStart != line && this.curIndent <= startIndent && this.tokenStartsLine()) node.property = this.dummyIdent();else node.property = this.parsePropertyAccessor() || this.dummyIdent();
node.computed = false;
base = this.finishNode(node, "MemberExpression");
} else if (this.tok.type == _.tokTypes.bracketL) {
this.pushCx();
this.next();
var node = this.startNodeAt(start);
node.object = base;
node.property = this.parseExpression();
node.computed = true;
this.popCx();
this.expect(_.tokTypes.bracketR);
base = this.finishNode(node, "MemberExpression");
} else if (!noCalls && this.tok.type == _.tokTypes.parenL) {
var node = this.startNodeAt(start);
node.callee = base;
node.arguments = this.parseExprList(_.tokTypes.parenR);
base = this.finishNode(node, "CallExpression");
} else if (this.tok.type == _.tokTypes.backQuote) {
var node = this.startNodeAt(start);
node.tag = base;
node.quasi = this.parseTemplate();
base = this.finishNode(node, "TaggedTemplateExpression");
} else {
return base;
}
}
};
lp.parseExprAtom = function () {
var node = undefined;
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 || (_parseutil.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._yield:
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");
case _.tokTypes.backQuote:
return this.parseTemplate();
default:
return this.dummyIdent();
}
};
lp.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.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.parseTemplate = function () {
var node = this.startNode();
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");
};
lp.parseObj = function () {
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.startNode(),
isGenerator = undefined,
start = undefined;
if (this.options.ecmaVersion >= 6) {
start = this.storeCurrentPos();
prop.method = false;
prop.shorthand = false;
isGenerator = this.eat(_.tokTypes.star);
}
this.parsePropertyName(prop);
if (_parseutil.isDummy(prop.key)) {
if (_parseutil.isDummy(this.parseMaybeAssign())) this.next();this.eat(_.tokTypes.comma);continue;
}
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)) {
prop.kind = "init";
prop.method = true;
prop.value = this.parseMethod(isGenerator);
} 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)) {
prop.kind = prop.key.name;
this.parsePropertyName(prop);
prop.value = this.parseMethod(false);
} else {
prop.kind = "init";
if (this.options.ecmaVersion >= 6) {
if (this.eat(_.tokTypes.eq)) {
var assign = this.startNodeAt(start);
assign.operator = "=";
assign.left = prop.key;
assign.right = this.parseMaybeAssign();
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();
}
// Don't define new properties on acorn because of:
// TypeError: can't define property "parse_dammit": Object is not extensible
// 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)) {
if (this.eatContextual("as")) elt.local = this.parseIdent();
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)
});
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