%PDF-
%PDF-
Mini Shell
Mini Shell
import acorn, { SourceLocation, tokTypes, tokenizer, Node, lineBreak, isNewLine, getLineInfo, Token, lineBreakG } from './acorn.js';
// Registered plugins
var pluginsLoose = {}
var LooseParser = function LooseParser(input, options) {
if ( options === void 0 ) options = {};
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) {
var this$1 = this;
if (this.eat(type)) return true
for (var i = 1; i <= 2; i++) {
if (this$1.lookAhead(i).type == type) {
for (var j = 0; j < i; j++) this$1.next()
return true
}
}
};
LooseParser.prototype.pushCx = function pushCx () {
this.context.push(this.curIndent)
};
LooseParser.prototype.popCx = function popCx () {
this.curIndent = this.context.pop()
};
LooseParser.prototype.lineEnd = function lineEnd (pos) {
while (pos < this.input.length && !isNewLine(this.input.charCodeAt(pos))) ++pos
return pos
};
LooseParser.prototype.indentationAfter = function indentationAfter (pos) {
var this$1 = this;
for (var count = 0;; ++pos) {
var ch = this$1.input.charCodeAt(pos)
if (ch === 32) ++count
else if (ch === 9) count += this$1.options.tabSize
else return count
}
};
LooseParser.prototype.closes = function closes (closeTok, indent, line, blockHeuristic) {
if (this.tok.type === closeTok || this.tok.type === tokTypes.eof) return true
return line != this.curLineStart && this.curIndent < indent && this.tokenStartsLine() &&
(!blockHeuristic || this.nextLineStart >= this.input.length ||
this.indentationAfter(this.nextLineStart) < indent)
};
LooseParser.prototype.tokenStartsLine = function tokenStartsLine () {
var this$1 = this;
for (var p = this.tok.start - 1; p >= this.curLineStart; --p) {
var ch = this$1.input.charCodeAt(p)
if (ch !== 9 && ch !== 32) return false
}
return true
};
LooseParser.prototype.extend = function extend (name, f) {
this[name] = f(this[name])
};
LooseParser.prototype.loadPlugins = function loadPlugins (pluginConfigs) {
var this$1 = this;
for (var name in pluginConfigs) {
var plugin = pluginsLoose[name]
if (!plugin) throw new Error("Plugin '" + name + "' not found")
plugin(this$1, pluginConfigs[name])
}
};
var lp = LooseParser.prototype
function isSpace(ch) {
return (ch < 14 && ch > 8) || ch === 32 || ch === 160 || isNewLine(ch)
}
lp.next = function() {
var this$1 = this;
this.last = this.tok
if (this.ahead.length)
this.tok = this.ahead.shift()
else
this.tok = this.readToken()
if (this.tok.start >= this.nextLineStart) {
while (this.tok.start >= this.nextLineStart) {
this$1.curLineStart = this$1.nextLineStart
this$1.nextLineStart = this$1.lineEnd(this$1.curLineStart) + 1
}
this.curIndent = this.indentationAfter(this.curLineStart)
}
}
lp.readToken = function() {
var this$1 = this;
for (;;) {
try {
this$1.toks.next()
if (this$1.toks.type === tokTypes.dot &&
this$1.input.substr(this$1.toks.end, 1) === "." &&
this$1.options.ecmaVersion >= 6) {
this$1.toks.end++
this$1.toks.type = tokTypes.ellipsis
}
return new Token(this$1.toks)
} catch(e) {
if (!(e instanceof SyntaxError)) throw e
// Try to skip some text, based on the error message, and then continue
var msg = e.message, pos = e.raisedAt, replace = true
if (/unterminated/i.test(msg)) {
pos = this$1.lineEnd(e.pos + 1)
if (/string/.test(msg)) {
replace = {start: e.pos, end: pos, type: tokTypes.string, value: this$1.input.slice(e.pos + 1, pos)}
} else if (/regular expr/i.test(msg)) {
var re = this$1.input.slice(e.pos, pos)
try { re = new RegExp(re) } catch(e) {}
replace = {start: e.pos, end: pos, type: tokTypes.regexp, value: re}
} else if (/template/.test(msg)) {
replace = {start: e.pos, end: pos,
type: tokTypes.template,
value: this$1.input.slice(e.pos, pos)}
} else {
replace = false
}
} else if (/invalid (unicode|regexp|number)|expecting unicode|octal literal|is reserved|directly after number|expected number in radix/i.test(msg)) {
while (pos < this.input.length && !isSpace(this.input.charCodeAt(pos))) ++pos
} else if (/character escape|expected hexadecimal/i.test(msg)) {
while (pos < this.input.length) {
var ch = this$1.input.charCodeAt(pos++)
if (ch === 34 || ch === 39 || isNewLine(ch)) break
}
} else if (/unexpected character/i.test(msg)) {
pos++
replace = false
} else if (/regular expression/i.test(msg)) {
replace = true
} else {
throw e
}
this$1.resetTo(pos)
if (replace === true) replace = {start: pos, end: pos, type: tokTypes.name, value: "✖"}
if (replace) {
if (this$1.options.locations)
replace.loc = new SourceLocation(
this$1.toks,
getLineInfo(this$1.input, replace.start),
getLineInfo(this$1.input, replace.end))
return replace
}
}
}
}
lp.resetTo = function(pos) {
var this$1 = this;
this.toks.pos = pos
var ch = this.input.charAt(pos - 1)
this.toks.exprAllowed = !ch || /[\[\{\(,;:?\/*=+\-~!|&%^<>]/.test(ch) ||
/[enwfd]/.test(ch) &&
/\b(keywords|case|else|return|throw|new|in|(instance|type)of|delete|void)$/.test(this.input.slice(pos - 10, pos))
if (this.options.locations) {
this.toks.curLine = 1
this.toks.lineStart = lineBreakG.lastIndex = 0
var match
while ((match = lineBreakG.exec(this.input)) && match.index < pos) {
++this$1.toks.curLine
this$1.toks.lineStart = match.index + match[0].length
}
}
}
lp.lookAhead = function(n) {
var this$1 = this;
while (n > this.ahead.length)
this$1.ahead.push(this$1.readToken())
return this.ahead[n - 1]
}
function isDummy(node) { return node.name == "✖" }
var lp$1 = LooseParser.prototype
lp$1.parseTopLevel = function() {
var this$1 = this;
var node = this.startNodeAt(this.options.locations ? [0, getLineInfo(this.input, 0)] : 0)
node.body = []
while (this.tok.type !== tokTypes.eof) node.body.push(this$1.parseStatement())
this.last = this.tok
if (this.options.ecmaVersion >= 6) {
node.sourceType = this.options.sourceType
}
return this.finishNode(node, "Program")
}
lp$1.parseStatement = function() {
var this$1 = this;
var starttype = this.tok.type, node = this.startNode(), kind
if (this.toks.isLet()) {
starttype = tokTypes._var
kind = "let"
}
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)
var isLet = this.toks.isLet()
if (isLet || this.tok.type === tokTypes._var || this.tok.type === tokTypes._const) {
var init$1 = this.parseVar(true, isLet ? "let" : this.tok.value)
if (init$1.declarations.length === 1 && (this.tok.type === tokTypes._in || this.isContextual("of"))) {
return this.parseForIn(node, init$1)
}
return this.parseFor(node, init$1)
}
var init = this.parseExpression(true)
if (this.tok.type === 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
while (!this.closes(tokTypes.braceR, blockIndent, line, true)) {
if (this$1.tok.type === tokTypes._case || this$1.tok.type === tokTypes._default) {
var isCase = this$1.tok.type === tokTypes._case
if (cur) this$1.finishNode(cur, "SwitchCase")
node.cases.push(cur = this$1.startNode())
cur.consequent = []
this$1.next()
if (isCase) cur.test = this$1.parseExpression()
else cur.test = null
this$1.expect(tokTypes.colon)
} else {
if (!cur) {
node.cases.push(cur = this$1.startNode())
cur.consequent = []
cur.test = null
}
cur.consequent.push(this$1.parseStatement())
}
}
if (cur) this.finishNode(cur, "SwitchCase")
this.popCx()
this.eat(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._const:
return this.parseVar(false, kind || this.tok.value)
case tokTypes._while:
this.next()
node.test = this.parseParenExpression()
node.body = this.parseStatement()
return this.finishNode(node, "WhileStatement")
case tokTypes._with:
this.next()
node.object = this.parseParenExpression()
node.body = this.parseStatement()
return this.finishNode(node, "WithStatement")
case tokTypes.braceL:
return this.parseBlock()
case tokTypes.semi:
this.next()
return this.finishNode(node, "EmptyStatement")
case tokTypes._class:
return this.parseClass(true)
case tokTypes._import:
return this.parseImport()
case tokTypes._export:
return this.parseExport()
default:
var expr = this.parseExpression()
if (isDummy(expr)) {
this.next()
if (this.tok.type === tokTypes.eof) return this.finishNode(node, "EmptyStatement")
return this.parseStatement()
} else if (starttype === tokTypes.name && expr.type === "Identifier" && this.eat(tokTypes.colon)) {
node.body = this.parseStatement()
node.label = expr
return this.finishNode(node, "LabeledStatement")
} else {
node.expression = expr
this.semicolon()
return this.finishNode(node, "ExpressionStatement")
}
}
}
lp$1.parseBlock = function() {
var this$1 = this;
var node = this.startNode()
this.pushCx()
this.expect(tokTypes.braceL)
var blockIndent = this.curIndent, line = this.curLineStart
node.body = []
while (!this.closes(tokTypes.braceR, blockIndent, line, true))
node.body.push(this$1.parseStatement())
this.popCx()
this.eat(tokTypes.braceR)
return this.finishNode(node, "BlockStatement")
}
lp$1.parseFor = function(node, init) {
node.init = init
node.test = node.update = null
if (this.eat(tokTypes.semi) && this.tok.type !== tokTypes.semi) node.test = this.parseExpression()
if (this.eat(tokTypes.semi) && this.tok.type !== tokTypes.parenR) node.update = this.parseExpression()
this.popCx()
this.expect(tokTypes.parenR)
node.body = this.parseStatement()
return this.finishNode(node, "ForStatement")
}
lp$1.parseForIn = function(node, init) {
var type = this.tok.type === tokTypes._in ? "ForInStatement" : "ForOfStatement"
this.next()
node.left = init
node.right = this.parseExpression()
this.popCx()
this.expect(tokTypes.parenR)
node.body = this.parseStatement()
return this.finishNode(node, type)
}
lp$1.parseVar = function(noIn, kind) {
var this$1 = this;
var node = this.startNode()
node.kind = kind
this.next()
node.declarations = []
do {
var decl = this$1.startNode()
decl.id = this$1.options.ecmaVersion >= 6 ? this$1.toAssignable(this$1.parseExprAtom(), true) : this$1.parseIdent()
decl.init = this$1.eat(tokTypes.eq) ? this$1.parseMaybeAssign(noIn) : null
node.declarations.push(this$1.finishNode(decl, "VariableDeclarator"))
} while (this.eat(tokTypes.comma))
if (!node.declarations.length) {
var decl$1 = this.startNode()
decl$1.id = this.dummyIdent()
node.declarations.push(this.finishNode(decl$1, "VariableDeclarator"))
}
if (!noIn) this.semicolon()
return this.finishNode(node, "VariableDeclaration")
}
lp$1.parseClass = function(isStatement) {
var this$1 = this;
var node = this.startNode()
this.next()
if (this.tok.type === tokTypes.name) node.id = this.parseIdent()
else if (isStatement) node.id = this.dummyIdent()
else node.id = null
node.superClass = this.eat(tokTypes._extends) ? this.parseExpression() : null
node.body = this.startNode()
node.body.body = []
this.pushCx()
var indent = this.curIndent + 1, line = this.curLineStart
this.eat(tokTypes.braceL)
if (this.curIndent + 1 < indent) { indent = this.curIndent; line = this.curLineStart }
while (!this.closes(tokTypes.braceR, indent, line)) {
if (this$1.semicolon()) continue
var method = this$1.startNode(), isGenerator
if (this$1.options.ecmaVersion >= 6) {
method.static = false
isGenerator = this$1.eat(tokTypes.star)
}
this$1.parsePropertyName(method)
if (isDummy(method.key)) { if (isDummy(this$1.parseMaybeAssign())) this$1.next(); this$1.eat(tokTypes.comma); continue }
if (method.key.type === "Identifier" && !method.computed && method.key.name === "static" &&
(this$1.tok.type != tokTypes.parenL && this$1.tok.type != tokTypes.braceL)) {
method.static = true
isGenerator = this$1.eat(tokTypes.star)
this$1.parsePropertyName(method)
} else {
method.static = false
}
if (this$1.options.ecmaVersion >= 5 && method.key.type === "Identifier" &&
!method.computed && (method.key.name === "get" || method.key.name === "set") &&
this$1.tok.type !== tokTypes.parenL && this$1.tok.type !== tokTypes.braceL) {
method.kind = method.key.name
this$1.parsePropertyName(method)
method.value = this$1.parseMethod(false)
} else {
if (!method.computed && !method.static && !isGenerator && (
method.key.type === "Identifier" && method.key.name === "constructor" ||
method.key.type === "Literal" && method.key.value === "constructor")) {
method.kind = "constructor"
} else {
method.kind = "method"
}
method.value = this$1.parseMethod(isGenerator)
}
node.body.body.push(this$1.finishNode(method, "MethodDefinition"))
}
this.popCx()
if (!this.eat(tokTypes.braceR)) {
// If there is no closing brace, make the node span to the start
// of the next token (this is useful for Tern)
this.last.end = this.tok.start
if (this.options.locations) this.last.loc.end = this.tok.loc.start
}
this.semicolon()
this.finishNode(node.body, "ClassBody")
return this.finishNode(node, isStatement ? "ClassDeclaration" : "ClassExpression")
}
lp$1.parseFunction = function(node, isStatement) {
this.initFunction(node)
if (this.options.ecmaVersion >= 6) {
node.generator = this.eat(tokTypes.star)
}
if (this.tok.type === tokTypes.name) node.id = this.parseIdent()
else if (isStatement) node.id = this.dummyIdent()
node.params = this.parseFunctionParams()
node.body = this.parseBlock()
return this.finishNode(node, isStatement ? "FunctionDeclaration" : "FunctionExpression")
}
lp$1.parseExport = function() {
var node = this.startNode()
this.next()
if (this.eat(tokTypes.star)) {
node.source = this.eatContextual("from") ? this.parseExprAtom() : this.dummyString()
return this.finishNode(node, "ExportAllDeclaration")
}
if (this.eat(tokTypes._default)) {
var expr = this.parseMaybeAssign()
if (expr.id) {
switch (expr.type) {
case "FunctionExpression": expr.type = "FunctionDeclaration"; break
case "ClassExpression": expr.type = "ClassDeclaration"; break
}
}
node.declaration = expr
this.semicolon()
return this.finishNode(node, "ExportDefaultDeclaration")
}
if (this.tok.type.keyword || this.toks.isLet()) {
node.declaration = this.parseStatement()
node.specifiers = []
node.source = null
} else {
node.declaration = null
node.specifiers = this.parseExportSpecifierList()
node.source = this.eatContextual("from") ? this.parseExprAtom() : null
this.semicolon()
}
return this.finishNode(node, "ExportNamedDeclaration")
}
lp$1.parseImport = function() {
var node = this.startNode()
this.next()
if (this.tok.type === tokTypes.string) {
node.specifiers = []
node.source = this.parseExprAtom()
node.kind = ''
} else {
var elt
if (this.tok.type === tokTypes.name && this.tok.value !== "from") {
elt = this.startNode()
elt.local = this.parseIdent()
this.finishNode(elt, "ImportDefaultSpecifier")
this.eat(tokTypes.comma)
}
node.specifiers = this.parseImportSpecifierList()
node.source = this.eatContextual("from") && this.tok.type == tokTypes.string ? this.parseExprAtom() : this.dummyString()
if (elt) node.specifiers.unshift(elt)
}
this.semicolon()
return this.finishNode(node, "ImportDeclaration")
}
lp$1.parseImportSpecifierList = function() {
var this$1 = this;
var elts = []
if (this.tok.type === tokTypes.star) {
var elt = this.startNode()
this.next()
elt.local = this.eatContextual("as") ? this.parseIdent() : this.dummyIdent()
elts.push(this.finishNode(elt, "ImportNamespaceSpecifier"))
} else {
var indent = this.curIndent, line = this.curLineStart, continuedLine = this.nextLineStart
this.pushCx()
this.eat(tokTypes.braceL)
if (this.curLineStart > continuedLine) continuedLine = this.curLineStart
while (!this.closes(tokTypes.braceR, indent + (this.curLineStart <= continuedLine ? 1 : 0), line)) {
var elt$1 = this$1.startNode()
if (this$1.eat(tokTypes.star)) {
elt$1.local = this$1.eatContextual("as") ? this$1.parseIdent() : this$1.dummyIdent()
this$1.finishNode(elt$1, "ImportNamespaceSpecifier")
} else {
if (this$1.isContextual("from")) break
elt$1.imported = this$1.parseIdent()
if (isDummy(elt$1.imported)) break
elt$1.local = this$1.eatContextual("as") ? this$1.parseIdent() : elt$1.imported
this$1.finishNode(elt$1, "ImportSpecifier")
}
elts.push(elt$1)
this$1.eat(tokTypes.comma)
}
this.eat(tokTypes.braceR)
this.popCx()
}
return elts
}
lp$1.parseExportSpecifierList = function() {
var this$1 = this;
var elts = []
var indent = this.curIndent, line = this.curLineStart, continuedLine = this.nextLineStart
this.pushCx()
this.eat(tokTypes.braceL)
if (this.curLineStart > continuedLine) continuedLine = this.curLineStart
while (!this.closes(tokTypes.braceR, indent + (this.curLineStart <= continuedLine ? 1 : 0), line)) {
if (this$1.isContextual("from")) break
var elt = this$1.startNode()
elt.local = this$1.parseIdent()
if (isDummy(elt.local)) break
elt.exported = this$1.eatContextual("as") ? this$1.parseIdent() : elt.local
this$1.finishNode(elt, "ExportSpecifier")
elts.push(elt)
this$1.eat(tokTypes.comma)
}
this.eat(tokTypes.braceR)
this.popCx()
return elts
}
var lp$2 = LooseParser.prototype
lp$2.checkLVal = function(expr) {
if (!expr) return expr
switch (expr.type) {
case "Identifier":
case "MemberExpression":
return expr
case "ParenthesizedExpression":
expr.expression = this.checkLVal(expr.expression)
return expr
default:
return this.dummyIdent()
}
}
lp$2.parseExpression = function(noIn) {
var this$1 = this;
var start = this.storeCurrentPos()
var expr = this.parseMaybeAssign(noIn)
if (this.tok.type === tokTypes.comma) {
var node = this.startNodeAt(start)
node.expressions = [expr]
while (this.eat(tokTypes.comma)) node.expressions.push(this$1.parseMaybeAssign(noIn))
return this.finishNode(node, "SequenceExpression")
}
return expr
}
lp$2.parseParenExpression = function() {
this.pushCx()
this.expect(tokTypes.parenL)
var val = this.parseExpression()
this.popCx()
this.expect(tokTypes.parenR)
return val
}
lp$2.parseMaybeAssign = function(noIn) {
if (this.toks.isContextual("yield")) {
var node = this.startNode()
this.next()
if (this.semicolon() || this.canInsertSemicolon() || (this.tok.type != tokTypes.star && !this.tok.type.startsExpr)) {
node.delegate = false
node.argument = null
} else {
node.delegate = this.eat(tokTypes.star)
node.argument = this.parseMaybeAssign()
}
return this.finishNode(node, "YieldExpression")
}
var start = this.storeCurrentPos()
var left = this.parseMaybeConditional(noIn)
if (this.tok.type.isAssign) {
var node$1 = this.startNodeAt(start)
node$1.operator = this.tok.value
node$1.left = this.tok.type === tokTypes.eq ? this.toAssignable(left) : this.checkLVal(left)
this.next()
node$1.right = this.parseMaybeAssign(noIn)
return this.finishNode(node$1, "AssignmentExpression")
}
return left
}
lp$2.parseMaybeConditional = function(noIn) {
var start = this.storeCurrentPos()
var expr = this.parseExprOps(noIn)
if (this.eat(tokTypes.question)) {
var node = this.startNodeAt(start)
node.test = expr
node.consequent = this.parseMaybeAssign()
node.alternate = this.expect(tokTypes.colon) ? this.parseMaybeAssign(noIn) : this.dummyIdent()
return this.finishNode(node, "ConditionalExpression")
}
return expr
}
lp$2.parseExprOps = function(noIn) {
var start = this.storeCurrentPos()
var indent = this.curIndent, line = this.curLineStart
return this.parseExprOp(this.parseMaybeUnary(false), start, -1, noIn, indent, line)
}
lp$2.parseExprOp = function(left, start, minPrec, noIn, indent, line) {
if (this.curLineStart != line && this.curIndent < indent && this.tokenStartsLine()) return left
var prec = this.tok.type.binop
if (prec != null && (!noIn || this.tok.type !== tokTypes._in)) {
if (prec > minPrec) {
var node = this.startNodeAt(start)
node.left = left
node.operator = this.tok.value
this.next()
if (this.curLineStart != line && this.curIndent < indent && this.tokenStartsLine()) {
node.right = this.dummyIdent()
} else {
var rightStart = this.storeCurrentPos()
node.right = this.parseExprOp(this.parseMaybeUnary(false), rightStart, prec, noIn, indent, line)
}
this.finishNode(node, /&&|\|\|/.test(node.operator) ? "LogicalExpression" : "BinaryExpression")
return this.parseExprOp(node, start, minPrec, noIn, indent, line)
}
}
return left
}
lp$2.parseMaybeUnary = function(sawUnary) {
var this$1 = this;
var start = this.storeCurrentPos(), expr
if (this.tok.type.prefix) {
var node = this.startNode(), update = this.tok.type === tokTypes.incDec
if (!update) sawUnary = true
node.operator = this.tok.value
node.prefix = true
this.next()
node.argument = this.parseMaybeUnary(true)
if (update) node.argument = this.checkLVal(node.argument)
expr = this.finishNode(node, update ? "UpdateExpression" : "UnaryExpression")
} else if (this.tok.type === tokTypes.ellipsis) {
var node$1 = this.startNode()
this.next()
node$1.argument = this.parseMaybeUnary(sawUnary)
expr = this.finishNode(node$1, "SpreadElement")
} else {
expr = this.parseExprSubscripts()
while (this.tok.type.postfix && !this.canInsertSemicolon()) {
var node$2 = this$1.startNodeAt(start)
node$2.operator = this$1.tok.value
node$2.prefix = false
node$2.argument = this$1.checkLVal(expr)
this$1.next()
expr = this$1.finishNode(node$2, "UpdateExpression")
}
}
if (!sawUnary && this.eat(tokTypes.starstar)) {
var node$3 = this.startNodeAt(start)
node$3.operator = "**"
node$3.left = expr
node$3.right = this.parseMaybeUnary(false)
return this.finishNode(node$3, "BinaryExpression")
}
return expr
}
lp$2.parseExprSubscripts = function() {
var start = this.storeCurrentPos()
return this.parseSubscripts(this.parseExprAtom(), start, false, this.curIndent, this.curLineStart)
}
lp$2.parseSubscripts = function(base, start, noCalls, startIndent, line) {
var this$1 = this;
for (;;) {
if (this$1.curLineStart != line && this$1.curIndent <= startIndent && this$1.tokenStartsLine()) {
if (this$1.tok.type == tokTypes.dot && this$1.curIndent == startIndent)
--startIndent
else
return base
}
if (this$1.eat(tokTypes.dot)) {
var node = this$1.startNodeAt(start)
node.object = base
if (this$1.curLineStart != line && this$1.curIndent <= startIndent && this$1.tokenStartsLine())
node.property = this$1.dummyIdent()
else
node.property = this$1.parsePropertyAccessor() || this$1.dummyIdent()
node.computed = false
base = this$1.finishNode(node, "MemberExpression")
} else if (this$1.tok.type == tokTypes.bracketL) {
this$1.pushCx()
this$1.next()
var node$1 = this$1.startNodeAt(start)
node$1.object = base
node$1.property = this$1.parseExpression()
node$1.computed = true
this$1.popCx()
this$1.expect(tokTypes.bracketR)
base = this$1.finishNode(node$1, "MemberExpression")
} else if (!noCalls && this$1.tok.type == tokTypes.parenL) {
var node$2 = this$1.startNodeAt(start)
node$2.callee = base
node$2.arguments = this$1.parseExprList(tokTypes.parenR)
base = this$1.finishNode(node$2, "CallExpression")
} else if (this$1.tok.type == tokTypes.backQuote) {
var node$3 = this$1.startNodeAt(start)
node$3.tag = base
node$3.quasi = this$1.parseTemplate()
base = this$1.finishNode(node$3, "TaggedTemplateExpression")
} else {
return base
}
}
}
lp$2.parseExprAtom = function() {
var node
switch (this.tok.type) {
case tokTypes._this:
case tokTypes._super:
var type = this.tok.type === tokTypes._this ? "ThisExpression" : "Super"
node = this.startNode()
this.next()
return this.finishNode(node, type)
case tokTypes.name:
var start = this.storeCurrentPos()
var id = this.parseIdent()
return this.eat(tokTypes.arrow) ? this.parseArrowExpression(this.startNodeAt(start), [id]) : id
case tokTypes.regexp:
node = this.startNode()
var val = this.tok.value
node.regex = {pattern: val.pattern, flags: val.flags}
node.value = val.value
node.raw = this.input.slice(this.tok.start, this.tok.end)
this.next()
return this.finishNode(node, "Literal")
case tokTypes.num: case tokTypes.string:
node = this.startNode()
node.value = this.tok.value
node.raw = this.input.slice(this.tok.start, this.tok.end)
this.next()
return this.finishNode(node, "Literal")
case tokTypes._null: case tokTypes._true: case tokTypes._false:
node = this.startNode()
node.value = this.tok.type === tokTypes._null ? null : this.tok.type === tokTypes._true
node.raw = this.tok.type.keyword
this.next()
return this.finishNode(node, "Literal")
case tokTypes.parenL:
var parenStart = this.storeCurrentPos()
this.next()
var inner = this.parseExpression()
this.expect(tokTypes.parenR)
if (this.eat(tokTypes.arrow)) {
return this.parseArrowExpression(this.startNodeAt(parenStart), inner.expressions || (isDummy(inner) ? [] : [inner]))
}
if (this.options.preserveParens) {
var par = this.startNodeAt(parenStart)
par.expression = inner
inner = this.finishNode(par, "ParenthesizedExpression")
}
return inner
case tokTypes.bracketL:
node = this.startNode()
node.elements = this.parseExprList(tokTypes.bracketR, true)
return this.finishNode(node, "ArrayExpression")
case tokTypes.braceL:
return this.parseObj()
case tokTypes._class:
return this.parseClass()
case tokTypes._function:
node = this.startNode()
this.next()
return this.parseFunction(node, false)
case tokTypes._new:
return this.parseNew()
case tokTypes.backQuote:
return this.parseTemplate()
default:
return this.dummyIdent()
}
}
lp$2.parseNew = function() {
var node = this.startNode(), startIndent = this.curIndent, line = this.curLineStart
var meta = this.parseIdent(true)
if (this.options.ecmaVersion >= 6 && this.eat(tokTypes.dot)) {
node.meta = meta
node.property = this.parseIdent(true)
return this.finishNode(node, "MetaProperty")
}
var start = this.storeCurrentPos()
node.callee = this.parseSubscripts(this.parseExprAtom(), start, true, startIndent, line)
if (this.tok.type == tokTypes.parenL) {
node.arguments = this.parseExprList(tokTypes.parenR)
} else {
node.arguments = []
}
return this.finishNode(node, "NewExpression")
}
lp$2.parseTemplateElement = function() {
var elem = this.startNode()
elem.value = {
raw: this.input.slice(this.tok.start, this.tok.end).replace(/\r\n?/g, '\n'),
cooked: this.tok.value
}
this.next()
elem.tail = this.tok.type === tokTypes.backQuote
return this.finishNode(elem, "TemplateElement")
}
lp$2.parseTemplate = function() {
var this$1 = this;
var node = this.startNode()
this.next()
node.expressions = []
var curElt = this.parseTemplateElement()
node.quasis = [curElt]
while (!curElt.tail) {
this$1.next()
node.expressions.push(this$1.parseExpression())
if (this$1.expect(tokTypes.braceR)) {
curElt = this$1.parseTemplateElement()
} else {
curElt = this$1.startNode()
curElt.value = {cooked: '', raw: ''}
curElt.tail = true
this$1.finishNode(curElt, "TemplateElement")
}
node.quasis.push(curElt)
}
this.expect(tokTypes.backQuote)
return this.finishNode(node, "TemplateLiteral")
}
lp$2.parseObj = function() {
var this$1 = this;
var node = this.startNode()
node.properties = []
this.pushCx()
var indent = this.curIndent + 1, line = this.curLineStart
this.eat(tokTypes.braceL)
if (this.curIndent + 1 < indent) { indent = this.curIndent; line = this.curLineStart }
while (!this.closes(tokTypes.braceR, indent, line)) {
var prop = this$1.startNode(), isGenerator, start
if (this$1.options.ecmaVersion >= 6) {
start = this$1.storeCurrentPos()
prop.method = false
prop.shorthand = false
isGenerator = this$1.eat(tokTypes.star)
}
this$1.parsePropertyName(prop)
if (isDummy(prop.key)) { if (isDummy(this$1.parseMaybeAssign())) this$1.next(); this$1.eat(tokTypes.comma); continue }
if (this$1.eat(tokTypes.colon)) {
prop.kind = "init"
prop.value = this$1.parseMaybeAssign()
} else if (this$1.options.ecmaVersion >= 6 && (this$1.tok.type === tokTypes.parenL || this$1.tok.type === tokTypes.braceL)) {
prop.kind = "init"
prop.method = true
prop.value = this$1.parseMethod(isGenerator)
} else if (this$1.options.ecmaVersion >= 5 && prop.key.type === "Identifier" &&
!prop.computed && (prop.key.name === "get" || prop.key.name === "set") &&
(this$1.tok.type != tokTypes.comma && this$1.tok.type != tokTypes.braceR)) {
prop.kind = prop.key.name
this$1.parsePropertyName(prop)
prop.value = this$1.parseMethod(false)
} else {
prop.kind = "init"
if (this$1.options.ecmaVersion >= 6) {
if (this$1.eat(tokTypes.eq)) {
var assign = this$1.startNodeAt(start)
assign.operator = "="
assign.left = prop.key
assign.right = this$1.parseMaybeAssign()
prop.value = this$1.finishNode(assign, "AssignmentExpression")
} else {
prop.value = prop.key
}
} else {
prop.value = this$1.dummyIdent()
}
prop.shorthand = true
}
node.properties.push(this$1.finishNode(prop, "Property"))
this$1.eat(tokTypes.comma)
}
this.popCx()
if (!this.eat(tokTypes.braceR)) {
// If there is no closing brace, make the node span to the start
// of the next token (this is useful for Tern)
this.last.end = this.tok.start
if (this.options.locations) this.last.loc.end = this.tok.loc.start
}
return this.finishNode(node, "ObjectExpression")
}
lp$2.parsePropertyName = function(prop) {
if (this.options.ecmaVersion >= 6) {
if (this.eat(tokTypes.bracketL)) {
prop.computed = true
prop.key = this.parseExpression()
this.expect(tokTypes.bracketR)
return
} else {
prop.computed = false
}
}
var key = (this.tok.type === tokTypes.num || this.tok.type === tokTypes.string) ? this.parseExprAtom() : this.parseIdent()
prop.key = key || this.dummyIdent()
}
lp$2.parsePropertyAccessor = function() {
if (this.tok.type === tokTypes.name || this.tok.type.keyword) return this.parseIdent()
}
lp$2.parseIdent = function() {
var name = this.tok.type === tokTypes.name ? this.tok.value : this.tok.type.keyword
if (!name) return this.dummyIdent()
var node = this.startNode()
this.next()
node.name = name
return this.finishNode(node, "Identifier")
}
lp$2.initFunction = function(node) {
node.id = null
node.params = []
if (this.options.ecmaVersion >= 6) {
node.generator = false
node.expression = false
}
}
// Convert existing expression atom to assignable pattern
// if possible.
lp$2.toAssignable = function(node, binding) {
var this$1 = this;
if (!node || node.type == "Identifier" || (node.type == "MemberExpression" && !binding)) {
// Okay
} else if (node.type == "ParenthesizedExpression") {
node.expression = this.toAssignable(node.expression, binding)
} else if (this.options.ecmaVersion < 6) {
return this.dummyIdent()
} else if (node.type == "ObjectExpression") {
node.type = "ObjectPattern"
var props = node.properties
for (var i = 0; i < props.length; i++)
props[i].value = this$1.toAssignable(props[i].value, binding)
} else if (node.type == "ArrayExpression") {
node.type = "ArrayPattern"
this.toAssignableList(node.elements, binding)
} else if (node.type == "SpreadElement") {
node.type = "RestElement"
node.argument = this.toAssignable(node.argument, binding)
} else if (node.type == "AssignmentExpression") {
node.type = "AssignmentPattern"
delete node.operator
} else {
return this.dummyIdent()
}
return node
}
lp$2.toAssignableList = function(exprList, binding) {
var this$1 = this;
for (var i = 0; i < exprList.length; i++)
exprList[i] = this$1.toAssignable(exprList[i], binding)
return exprList
}
lp$2.parseFunctionParams = function(params) {
params = this.parseExprList(tokTypes.parenR)
return this.toAssignableList(params, true)
}
lp$2.parseMethod = function(isGenerator) {
var node = this.startNode()
this.initFunction(node)
node.params = this.parseFunctionParams()
node.generator = isGenerator || false
node.expression = this.options.ecmaVersion >= 6 && this.tok.type !== tokTypes.braceL
node.body = node.expression ? this.parseMaybeAssign() : this.parseBlock()
return this.finishNode(node, "FunctionExpression")
}
lp$2.parseArrowExpression = function(node, params) {
this.initFunction(node)
node.params = this.toAssignableList(params, true)
node.expression = this.tok.type !== tokTypes.braceL
node.body = node.expression ? this.parseMaybeAssign() : this.parseBlock()
return this.finishNode(node, "ArrowFunctionExpression")
}
lp$2.parseExprList = function(close, allowEmpty) {
var this$1 = this;
this.pushCx()
var indent = this.curIndent, line = this.curLineStart, elts = []
this.next() // Opening bracket
while (!this.closes(close, indent + 1, line)) {
if (this$1.eat(tokTypes.comma)) {
elts.push(allowEmpty ? null : this$1.dummyIdent())
continue
}
var elt = this$1.parseMaybeAssign()
if (isDummy(elt)) {
if (this$1.closes(close, indent, line)) break
this$1.next()
} else {
elts.push(elt)
}
this$1.eat(tokTypes.comma)
}
this.popCx()
if (!this.eat(close)) {
// If there is no closing brace, make the node span to the start
// of the next token (this is useful for Tern)
this.last.end = this.tok.start
if (this.options.locations) this.last.loc.end = this.tok.loc.start
}
return elts
}
acorn.defaultOptions.tabSize = 4
function parse_dammit(input, options) {
var p = new LooseParser(input, options)
p.next()
return p.parseTopLevel()
}
acorn.parse_dammit = parse_dammit
acorn.LooseParser = LooseParser
acorn.pluginsLoose = pluginsLoose
export { parse_dammit, LooseParser, pluginsLoose };
Zerion Mini Shell 1.0