[Pkg-javascript-commits] [node-acorn-jsx] 01/484: Initial import
Bastien Roucariès
rouca at moszumanska.debian.org
Sat Aug 19 14:19:55 UTC 2017
This is an automated email from the git hooks/post-receive script.
rouca pushed a commit to branch master
in repository node-acorn-jsx.
commit aedcd4e12fd2dca3b415b0019fb96962a8bad27d
Author: Marijn Haverbeke <marijnh at gmail.com>
Date: Mon Sep 24 10:48:45 2012 +0200
Initial import
---
acorn.js | 998 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 998 insertions(+)
diff --git a/acorn.js b/acorn.js
new file mode 100644
index 0000000..369902c
--- /dev/null
+++ b/acorn.js
@@ -0,0 +1,998 @@
+// Some regexps (identifierchars, whitespace) and error message
+// strings from esprima(.org) by Ariya Hidayat.
+
+(function(exports) {
+ "strict mode";
+
+ exports.version = "0.0.1";
+
+ // State variables
+
+ var options, input, inputLen;
+ var next, last;
+ var lastStart, lastEnd, lastCommentsAfter;
+ var inFunction, labels, strict;
+
+ // PARSER
+
+ var defaultOptions = {
+ ecmaVersion: 5,
+ strictSemicolons: false,
+ allowTrailingCommas: true,
+ forbidReserved: false,
+ trackComments: false,
+ linePositions: false
+ };
+
+ function next() {
+ lastStart = tokStart;
+ lastEnd = tokEnd;
+ lastCommentsAfter = tokCommentsAfter;
+ readToken();
+ }
+
+ function setStrict(strct) {
+ strict = strct;
+ tokPos = options.linePositions ? lastEnd.offset : lastEnd;
+ skipSpace();
+ readToken();
+ }
+
+ function startNode() {
+ var node = {type: null, start: tokStart};
+ if (options.trackComments && tokCommentsBefore) {
+ node.commentsBefore = tokCommentsBefore;
+ tokCommentsBefore = null;
+ }
+ return node;
+ }
+
+ function startNodeFrom(other) {
+ var node = {type: null, start: other.start};
+ if (other.commentsBefore) {
+ node.commentsBefore = other.commentsBefore;
+ other.commentsBefore = null;
+ }
+ return node;
+ }
+
+ function finishNode(node, type) {
+ if (type != null) node.type = type;
+ node.end = lastEnd;
+ if (options.trackComments && lastCommentsAfter)
+ node.commentsAfter = tokCommentsAfter;
+ return node;
+ }
+
+ exports.parse = function(inpt, opts) {
+ input = String(inpt); inputLen = input.length;
+ options = opts || {};
+ for (var opt in defaultOptions) if (!options.hasOwnProperty(opt))
+ options[opt] = defaultOptions[opt];
+ initTokenState();
+ lastStart = lastEnd = options.linePositions ? curLinePos() : tokPos;
+ lastCommentsAfter = inFunction = strict = null;
+ labels = [];
+ readToken();
+
+ var node = startNode(), first = true;
+ node.body = [];
+ while (tokType !== _eof) {
+ var stmt = parseStatement();
+ node.body.push(stmt);
+ if (first && isUseStrict(stmt)) setStrict(true);
+ first = false;
+ }
+ return finishNode(node, "Program");
+ };
+
+ function isUseStrict(stmt) {
+ return stmt.type === "ExpressionStatement" && stmt.expression.type === "Literal" &&
+ stmt.expression.value === "use strict";
+ }
+
+ function eat(type) {
+ if (tokType === type) {
+ next();
+ return true;
+ }
+ }
+
+ function canInsertSemicolon() {
+ return tokType === _eof || tokType === _braceR ||
+ !options.strictSemicolons &&
+ newline.test(options.linePositions ? input.slice(lastEnd.offset, tokStart.offset)
+ : input.slice(lastEnd, tokStart));
+ }
+
+ function semicolon() {
+ if (!eat(_semi) && !canInsertSemicolon()) unexpected();
+ }
+
+ function expect(type) {
+ if (tokType === type) next();
+ else unexpected();
+ }
+
+ function unexpected() {
+ raise(tokStart, "Unexpected token");
+ }
+
+ function parseStatement() {
+ // if expecting a statement and found a slash as operator,
+ // it must be a literal regexp.
+ if (tokType === _slash)
+ readToken(true);
+
+ var starttype = tokType, node = startNode();
+
+ switch (starttype) {
+ case _break: case _continue:
+ next();
+ var isBreak = starttype === _break;
+ if (eat(_semi) || canInsertSemicolon()) node.label = null;
+ else if (tokType !== _name) unexpected();
+ else {
+ node.label = parseIdent();
+ semicolon();
+ }
+ for (var i = 0; i < labels.length; ++i) {
+ var lab = labels[i];
+ if ((node.label == null || lab.name === node.label.name) &&
+ lab.kind != null && (isBreak || lab.kind === "loop")) break;
+ }
+ if (i === labels.length) raise(node.start, "Unsyntactic " + starttype.keyword);
+ return finishNode(node, isBreak ? "BreakStatement" : "ContinueStatement");
+
+ case _debugger:
+ next();
+ return finishNode(node, "DebuggerStatement");
+
+ case _do:
+ next();
+ labels.push({kind: "loop"});
+ node.body = parseStatement();
+ labels.pop();
+ expect(_while);
+ node.test = parseParenExpression();
+ return finishNode(node, "DoWhileStatement");
+
+ case _for:
+ next();
+ expect(_parenL);
+ if (tokType === _semi) return parseFor(node, null);
+ if (tokType === _var) {
+ var init = startNode();
+ next();
+ parseVar(init, true);
+ if (init.declarations.length === 1 && eat(_in))
+ return parseForIn(node, init);
+ return parseFor(node, init);
+ }
+ var init = parseExpression(false, true);
+ if (eat(_in)) {checkLVal(init); return parseForIn(node, init);}
+ return parseFor(node, init);
+
+ case _function:
+ next();
+ return parseFunction(node, true);
+
+ case _if:
+ next();
+ node.test = parseParenExpression();
+ node.consequent = parseStatement();
+ node.alternate = eat(_else) ? parseStatement() : null;
+ return finishNode(node, "IfStatement");
+
+ case _return:
+ if (!inFunction) raise(tokStart, "'return' outside of function");
+ next();
+ if (eat(_semi) || canInsertSemicolon()) node.argument = null;
+ else { node.argument = parseExpression(); semicolon(); }
+ return finishNode(node, "ReturnStatement");
+
+ case _switch:
+ next();
+ node.discriminant = parseParenExpression();
+ node.lexical = false;
+ node.cases = [];
+ expect(_braceL);
+ labels.push({kind: "switch"});
+ for (var cur, sawDefault; !eat(_braceR);) {
+ if (tokType === _case || tokType === _default) {
+ var isCase = tokType === _case;
+ if (cur) finishNode(cur, "SwitchCase");
+ node.cases.push(cur = startNode());
+ cur.consequent = [];
+ next();
+ if (isCase) cur.test = parseExpression();
+ else {
+ if (sawDefault) raise(lastStart, "Multiple default clauses"); sawDefault = true;
+ cur.test = null;
+ }
+ expect(_colon);
+ } else {
+ if (!cur) unexpected();
+ cur.consequent.push(parseStatement());
+ }
+ }
+ if (cur) finishNode(cur, "SwitchCase");
+ labels.pop();
+ return finishNode(node, "SwitchStatement");
+
+ case _throw:
+ next();
+ node.argument = parseExpression();
+ return finishNode(node, "ThrowStatement");
+
+ case _try:
+ next();
+ node.block = parseBlock();
+ node.handlers = [];
+ while (tokType === _catch) {
+ var clause = startNode();
+ next();
+ expect(_parenL);
+ clause.param = parseIdent();
+ if (strict && strictBadWords.test(clause.param.name))
+ raise(clause.param.start, "Binding " + clause.param.name + " in strict mode");
+ expect(_parenR);
+ clause.guard = null;
+ clause.body = parseBlock();
+ node.handlers.push(finishNode(clause, "CatchClause"));
+ }
+ node.finalizer = eat(_finally) ? parseBlock() : null;
+ if (!node.handlers.length && !node.finalizer)
+ raise(node.start, "Missing catch or finally clause");
+ return finishNode(node, "TryStatement");
+
+ case _var:
+ next();
+ node = parseVar(node);
+ semicolon();
+ return node;
+
+ case _while:
+ next();
+ node.test = parseParenExpression();
+ labels.push({kind: "loop"});
+ node.body = parseStatement();
+ labels.pop();
+ return finishNode(node, "WhileStatement");
+
+ case _with:
+ if (strict) raise(tokStart, "'with' in strict mode");
+ next();
+ node.object = parseParenExpression();
+ node.body = parseStatement();
+ return finishNode(node, "WithStatement");
+
+ case _braceL:
+ return parseBlock();
+
+ case _semi:
+ next();
+ return finishNode(node, "EmptyStatement");
+
+ default:
+ var maybeName = tokVal, expr = parseExpression();
+ if (starttype === _name && expr.type === "Identifier" && eat(_colon)) {
+ for (var i = 0; i < labels.length; ++i)
+ if (labels[i].name === maybeName) raise(expr.start, "Label '" + maybeName + "' is already declared");
+ var kind = tokType.isLoop ? "loop" : tokType === _switch ? "switch" : null;
+ labels.push({name: maybeName, kind: kind});
+ node.body = parseStatement();
+ node.label = expr;
+ return finishNode(node, "LabeledStatement");
+ } else {
+ node.expression = expr;
+ semicolon();
+ return finishNode(node, "ExpressionStatement");
+ }
+ }
+ }
+
+ function parseParenExpression() {
+ expect(_parenL);
+ var val = parseExpression();
+ expect(_parenR);
+ return val;
+ }
+
+ function parseBlock(allowStrict) {
+ var node = startNode(), first = true, strict = false, oldStrict;
+ node.body = [];
+ expect(_braceL);
+ while (!eat(_braceR)) {
+ var stmt = parseStatement();
+ node.body.push(stmt);
+ if (first && isUseStrict(stmt)) {
+ oldStrict = strict;
+ setStrict(strict = true);
+ }
+ first = false
+ }
+ if (strict && !oldStrict) setStrict(false);
+ return finishNode(node, "BlockStatement");
+ }
+
+ function parseFor(node, init) {
+ node.init = init;
+ expect(_semi);
+ node.test = tokType === _semi ? null : parseExpression();
+ expect(_semi);
+ node.update = tokType === _parenR ? null : parseExpression();
+ expect(_parenR);
+ labels.push({kind: "loop"});
+ node.body = parseStatement();
+ labels.pop();
+ return finishNode(node, "ForStatement");
+ }
+
+ function parseForIn(node, init) {
+ node.left = init;
+ node.right = parseExpression();
+ expect(_parenR);
+ labels.push({kind: "loop"});
+ node.body = parseStatement();
+ labels.pop();
+ return finishNode(node, "ForInStatement");
+ }
+
+ function parseVar(node, noIn) {
+ node.declarations = [];
+ node.kind = "var";
+ for (;;) {
+ var decl = startNode();
+ decl.id = parseIdent();
+ if (strict && strictBadWords.test(decl.id.name))
+ raise(id.start, "Binding " + decl.id.name + " in strict mode");
+ decl.init = eat(_eq) ? parseExpression(true, noIn) : null;
+ node.declarations.push(finishNode(decl, "VariableDeclarator"));
+ if (!eat(_comma)) break;
+ }
+ return finishNode(node, "VariableDeclaration");
+ }
+
+ function parsePropertyName() {
+ if (tokType === _num || tokType === _string) return parseExprAtom();
+ return parseIdent(true);
+ }
+
+ function parseIdent(liberal) {
+ var node = startNode();
+ if (tokType !== _name) {
+ if (liberal && tokType.keyword) node.name = tokType.keyword;
+ else unexpected();
+ } else node.name = tokVal;
+ next();
+ return finishNode(node, "Identifier");
+ }
+
+ function parseFunction(node, isStatement) {
+ if (tokType === _name) node.id = parseIdent();
+ else if (isStatement) unexpected();
+ else node.id = null;
+ node.params = [];
+ var first = true;
+ expect(_parenL);
+ while (!eat(_parenR)) {
+ if (!first) expect(_comma); else first = false;
+ node.params.push(parseIdent());
+ }
+
+ var oldInFunc = inFunction, oldLabels = labels;
+ inFunction = true; labels = [];
+ node.body = parseBlock(true);
+ if (strict || node.body.body.length && isUseStrict(node.body.body[0])) {
+ for (var i = node.id ? -1 : 0; i < node.params.length; ++i) {
+ var id = i < 0 ? node.id : node.params[i];
+ if (strictReservedWords.test(id.name) ||
+ strictBadWords.test(id.name))
+ raise(id.start, "Defining '" + id.name + "' in strict mode");
+ if (i >= 0) for (var j = 0; j < i; ++j) if (id.name === node.params[j].name)
+ raise(id.start, "Argument name clash in strict mode");
+ }
+ }
+
+ inFunction = oldInFunc; labels = oldLabels;
+ return finishNode(node, isStatement ? "FunctionDeclaration" : "FunctionExpression");
+ }
+
+ // EXPRESSION PARSING
+
+ function parseExprList(close, allowTrailingComma, allowEmpty) {
+ var elts = [], first = true;
+ while (!eat(close)) {
+ if (!first) {
+ expect(_comma);
+ if (allowTrailingComma && options.allowTrailingCommas && eat(close)) break;
+ } else first = false;
+
+ if (allowEmpty && tokType === _comma) elts.push(null);
+ else elts.push(parseExpression(true));
+ }
+ return elts;
+ }
+
+ function parseNew() {
+ var node = startNode();
+ next();
+ node.callee = parseSubscripts(parseExprAtom(false), false);
+ if (eat(_parenL)) node.arguments = parseExprList(_parenR, false);
+ else node.arguments = [];
+ return finishNode(node, "NewExpression");
+ }
+
+ function parseObj() {
+ var node = startNode(), first = true;
+ node.properties = [];
+ next();
+ while (!eat(_braceR)) {
+ if (!first) {
+ expect(_comma);
+ if (options.allowTrailingCommas && eat(_braceR)) break;
+ } else first = false;
+
+ var prop = {key: parsePropertyName()};
+ if (eat(_colon)) {
+ prop.value = parseExpression(true);
+ prop.kind = "init";
+ } else if (options.ecmaVersion >= 5 && prop.key.type === "Identifier" &&
+ /^[sg]et$/.test(prop.key.name)) {
+ prop.kind = prop.key.name;
+ prop.key = parsePropertyName();
+ if (!tokType === _parenL) unexpected();
+ prop.value = parseFunction(startNode(), false);
+ } else unexpected();
+ if (prop.key.type === "Identifier") for (var i = 0; i < node.properties.length; ++i) {
+ var other = node.properties[i];
+ if (other.key.name === prop.key.name) {
+ var haveGetSet = /.et/.test(prop.kind) || /.et/.test(other.kind);
+ var haveInit = prop.kind === "init" || other.kind === "init";
+ if (haveGetSet && (other.kind === prop.kind || haveInit) ||
+ strict && prop.kind === "init" && other.kind === "init")
+ raise(prop.key.start, "Redefinition of property");
+ }
+ }
+ node.properties.push(prop);
+ }
+ return finishNode(node, "ObjectExpression");
+ }
+
+ function parseExprAtom() {
+ if (tokType === _new) return parseNew();
+
+ switch (tokType) {
+ case _parenL:
+ next();
+ var val = parseExpression();
+ expect(_parenR);
+ return val;
+
+ case _bracketL:
+ var node = startNode();
+ next();
+ node.elements = parseExprList(_bracketR, true, true);
+ return finishNode(node, "ArrayExpression");
+
+ case _braceL:
+ return parseObj();
+
+ case _function:
+ var node = startNode();
+ next();
+ return parseFunction(node, false);
+
+ case _num: case _string: case _regexp:
+ var node = startNode();
+ node.value = tokVal;
+ next();
+ return finishNode(node, "Literal");
+
+ case _null: case _true: case _false:
+ var node = startNode();
+ node.value = tokType.atomValue;
+ next();
+ return finishNode(node, "Literal");
+
+ case _name:
+ if (tokVal === "this") {
+ var node = startNode();
+ next();
+ return finishNode(node, "ThisExpression");
+ } else return parseIdent();
+
+ default:
+ unexpected();
+ }
+ }
+
+ function parseSubscripts(base, allowCalls) {
+ if (eat(_dot)) {
+ var node = startNodeFrom(base);
+ node.object = base;
+ node.property = parseIdent(true);
+ node.computed = false;
+ return parseSubscripts(finishNode(node, "MemberExpression"), allowCalls);
+ } else if (eat(_bracketL)) {
+ var node = startNodeFrom(base);
+ node.object = base;
+ node.property = parseExpression();
+ node.computed = true;
+ expect(_bracketR);
+ return parseSubscripts(finishNode(node, "MemberExpression"), allowCalls);
+ } else if (allowCalls && eat(_parenL)) {
+ var node = startNodeFrom(base);
+ node.callee = base;
+ node.arguments = parseExprList(_parenR, false);
+ return parseSubscripts(finishNode(node, "CallExpression"), allowCalls);
+ } else return base;
+ }
+
+ function parseExprSubscripts(allowCalls) {
+ return parseSubscripts(parseExprAtom(allowCalls), allowCalls);
+ }
+
+ function parseMaybeUnary(noIn) {
+ if (tokType.prefix) {
+ var node = startNode(), update = tokType.isUpdate;
+ node.operator = tokVal;
+ node.prefix = true;
+ next();
+ node.argument = parseMaybeUnary(noIn);
+ if (update) checkLVal(node.argument);
+ else if (strict && node.operator === "delete" &&
+ node.argument.type === "Identifier")
+ raise(node.start, "Deleting local variable in strict mode");
+ return finishNode(node, update ? "UpdateExpression" : "UnaryExpression");
+ }
+ var expr = parseExprSubscripts(true);
+ while (tokType.postfix && !canInsertSemicolon()) {
+ var node = startNodeFrom(expr);
+ node.operator = tokVal;
+ node.prefix = false;
+ node.argument = expr;
+ checkLVal(expr);
+ next();
+ expr = finishNode(node, "UpdateExpression");
+ }
+ return expr;
+ }
+
+ function parseExprOp(left, minPrec, noIn) {
+ var prec = tokType.binop;
+ if (prec != null && (!noIn || tokType !== _in)) {
+ if (prec > minPrec) {
+ var node = startNodeFrom(left);
+ node.left = left;
+ node.operator = tokVal;
+ next();
+ node.right = parseExprOp(parseMaybeUnary(noIn), prec, noIn);
+ var node = finishNode(node, /&&|\|\|/.test(node.operator) ? "LogicalExpression" : "BinaryExpression");
+ return parseExprOp(node, minPrec, noIn);
+ }
+ }
+ return left;
+ }
+
+ function parseExprOps(noIn) {
+ return parseExprOp(parseMaybeUnary(noIn), -1, noIn);
+ }
+
+ function parseMaybeConditional(noIn) {
+ var expr = parseExprOps(noIn);
+ if (eat(_question)) {
+ var node = startNodeFrom(expr);
+ node.test = expr;
+ node.consequent = parseExpression(true);
+ expect(_colon);
+ node.alternate = parseExpression(true, noIn);
+ return finishNode(node, "ConditionalExpression");
+ }
+ return expr;
+ }
+
+ function parseMaybeAssign(noIn) {
+ var left = parseMaybeConditional(noIn);
+ if (tokType.isAssign) {
+ var node = startNodeFrom(left);
+ node.operator = tokVal;
+ node.left = left;
+ next();
+ node.right = parseMaybeAssign(noIn);
+ checkLVal(left);
+ return finishNode(node, "AssignmentExpression");
+ }
+ return left;
+ }
+
+ function parseExpression(noComma, noIn) {
+ var expr = parseMaybeAssign(noIn);
+ if (!noComma && tokType === _comma) {
+ var node = startNodeFrom(expr);
+ node.expressions = [expr];
+ while (eat(_comma)) node.expressions.push(parseMaybeAssign(noIn));
+ return finishNode(node, "SequenceExpression");
+ }
+ return expr;
+ }
+
+ function checkLVal(expr) {
+ if (!/^(?:Identifier|Member)/.test(expr.type))
+ raise(expr.start, "Assigning to rvalue");
+ if (strict && expr.type === "Identifier" && strictBadWords.test(expr.name))
+ raise(expr.start, "Assigning to " + expr.name + " in strict mode");
+ }
+
+ // TOKENIZER DEFINITIONS
+
+ // Token types
+ var _name = {type: "name"}, _eof = {type: "eof"};
+ var _num = {type: "num"}, _regexp = {type: "regexp"}, _string = {type: "string"};
+
+ var _break = {keyword: "break"}, _case = {keyword: "case", beforeExpr: true}, _catch = {keyword: "catch"};
+ var _continue = {keyword: "continue"}, _debugger = {keyword: "debugger"}, _default = {keyword: "default"};
+ var _do = {keyword: "do", isLoop: true}, _else = {keyword: "else", beforeExpr: true};
+ var _finally = {keyword: "finally"}, _for = {keyword: "for", isLoop: true}, _function = {keyword: "function"};
+ var _if = {keyword: "if"}, _return = {keyword: "return", beforeExpr: true}, _switch = {keyword: "switch"};
+ var _throw = {keyword: "throw", beforeExpr: true}, _try = {keyword: "try"}, _var = {keyword: "var"};
+ var _while = {keyword: "while", isLoop: true}, _with = {keyword: "with"}, _new = {keyword: "new", beforeExpr: true};
+ var _null = {keyword: "null", atomValue: null}, _true = {keyword: "true", atomValue: true};
+ var _false = {keyword: "false", atomValue: false}, _in = {keyword: "in", binop: 7, beforeExpr: true};
+ var keywordTypes = {"break": _break, "case": _case, "catch": _catch,
+ "continue": _continue, "debugger": _debugger, "default": _default,
+ "do": _do, "else": _else, "finally": _finally, "for": _for,
+ "function": _function, "if": _if, "return": _return, "switch": _switch,
+ "throw": _throw, "try": _try, "var": _var, "while": _while, "with": _with,
+ "null": _null, "true": _true, "false": _false, "new": _new, "in": _in,
+ "instanceof": {keyword: "instanceof", binop: 7},
+ "typeof": {keyword: "typeof", prefix: true},
+ "void": {keyword: "void", prefix: true},
+ "delete": {keyword: "delete", prefix: true}};
+ var keywords = /^(?:break|case|catch|const|continue|debugger|default|do|else|finally|for|function|if|return|switch|throw|try|var|while|with|null|true|false|instanceof|typeof|void|delete|new|in)$/;
+
+ var _bracketL = {type: "[", beforeExpr: true}, _bracketR = {type: "]"}, _braceL = {type: "{", beforeExpr: true}, _braceR = {type: "}"}, _parenL = {type: "(", beforeExpr: true}, _parenR = {type: ")"}, _comma = {type: ",", beforeExpr: true}, _semi = {type: ";", beforeExpr: true}, _colon = {type: ":", beforeExpr: true}, _dot = {type: "."}, _question = {type: "?", beforeExpr: true};
+ var puncTypes = {"[": _bracketL, "]": _bracketR, "{": _braceL, "}": _braceR, "(": _parenL,
+ ")": _parenR, ",": _comma, ";": _semi, ":": _colon, ".": _dot, "?": _question};
+ var puncChars = /[\[\]\{\}\(\),;:\.\?]/;
+
+ var _slash = {binop: 10, beforeExpr: true}, _eq = {isAssign: true, beforeExpr: true};
+ var opTypes = {"/": _slash, "=": _eq};
+ opTypes["+"] = opTypes["-"] = {binop: 9, prefix: true, beforeExpr: true};
+ opTypes["++"] = opTypes["--"] = {postfix: true, prefix: true, isUpdate: true};
+ opTypes["~"] = opTypes["!"] = {prefix: true, beforeExpr: true};
+ var binopPrecs = [1, "||", 2, "&&", 3, "|", 4, "^", 5, "&", 6, "==", "===", "!=", "!==",
+ 7, "<", ">", "<=", ">=", 8, ">>", "<<", ">>>", 10, "*", "%"];
+ for (var i = 0, curPrec; i < binopPrecs.length; ++i)
+ if (typeof binopPrecs[i] === "number") curPrec = binopPrecs[i];
+ else opTypes[binopPrecs[i]] = {binop: curPrec, beforeExpr: true};
+ var assignOps = ["+=", "-=", "/=", "*=", "%=", ">>=", ">>>=", "<<=", "|=", "^=", "&="];
+ for (var i = 0, typeObj = {isAssign: true, beforeExpr: true}; i < assignOps.length; ++i)
+ opTypes[assignOps[i]] = typeObj;
+
+ var reservedWords3 = /^(?:abstract|boolean|byte|char|class|double|enum|export|extends|final|float|goto|implements|import|int|interface|long|native|package|private|protected|public|short|static|super|synchronized|throws|transient|volatile)$/;
+ var reservedWords5 = /^(?:class|enum|extends|super|const|export|import)$/;
+ var strictReservedWords = /^(?:implements|interface|let|package|private|protected|public|static|yield)$/;
+ var strictBadWords = /^(?:eval|arguments)$/;
+
+ // CHARACTER CATEGORIES
+
+ var operatorChar = /[+\-\*\/&%=<>!|~^]/;
+ var reModifiers = /^[gmsiy]*$/;
+
+ var nonASCIIwhitespace = /[\u1680\u180E\u2000-\u200A\u202F\u205F\u3000\uFEFF]/;
+ var nonASCIIidentifierStartChars = "\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0370-\u0374\u0376\u0377\u037a-\u037d\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u048a-\u0527\u0531-\u0556\u0559\u0561-\u0587\u05d0-\u05ea\u05f0-\u05f2\u0620-\u064a\u066e\u066f\u0671-\u06d3\u06d5\u06e5\u06e6\u06ee\u06ef\u06fa-\u06fc\u06ff\u0710\u0712-\u072f\u074d-\u07a5\u07b1\u07ca-\u07ea\u07f4\u07f5\u07fa\u0800-\u0815\u081a\u0824\u0828\u0840-\u0858\u [...]
+ var nonASCIIidentifierChars = "\u0371-\u0374\u0483-\u0487\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u0620-\u0649\u0672-\u06d3\u06e7-\u06e8\u06fb-\u06fc\u0730-\u074a\u0800-\u0814\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0840-\u0857\u08e4-\u08fe\u0900-\u0903\u093a-\u093c\u093e-\u094f\u0951-\u0957\u0962-\u0963\u0966-\u096f\u0981-\u0983\u09bc\u09be-\u09c4\u09c7\u09c8\u09d7\u09df-\u09e0\u0a01-\u0a03\u0a3c\u0a3e-\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a66-\u0a71\u0a75\u0a8 [...]
+ var nonASCIIidentifierStart = new RegExp("[" + nonASCIIidentifierStartChars + "]");
+ var nonASCIIidentifier = new RegExp("[" + nonASCIIidentifierStartChars + nonASCIIidentifierChars + "]");
+ var identifierStart = /[a-zA-Z_$]/, identifier = /[a-zA-Z_$0-9]+/, identifierG = /[a-zA-Z_$0-9]+/g
+ var digit = /\d/, sign = /[-+]/;
+ var newline = /[\n\r\u2028\u2029]/;
+ var lineBreak = /\r\n?|[\n\r\u2028\u2029]/g;
+
+ // TOKENIZER STATE
+
+ var tokStart, tokEnd, tokType, tokVal, tokCommentsBefore, tokCommentsAfter;
+
+ var tokPos, tokRegexpAllowed, tokComments;
+ var tokCurLine, tokLineStart, tokLineStartNext;
+
+ function nextLineStart() {
+ lineBreak.lastIndex = tokLineStart;
+ var match = lineBreak.exec(input);
+ return match ? match.index + match[0].length : input.length + 1;
+ }
+
+ function curLinePos() {
+ while (tokLineStartNext <= tokPos) {
+ ++tokCurLine;
+ tokLineStart = tokLineStartNext;
+ tokLineStartNext = nextLineStart();
+ }
+ return {offset: tokPos, line: tokCurLine, column: tokPos - tokLineStart};
+ }
+
+ function initTokenState() {
+ tokCurLine = 1;
+ tokPos = tokLineStart = 0;
+ tokLineStartNext = nextLineStart();
+ tokRegexpAllowed = true;
+ tokComments = null;
+ skipSpace();
+ }
+
+ function finishToken(type, val) {
+ tokEnd = options.linePositions ? curLinePos() : tokPos;
+ tokType = type;
+ skipSpace();
+ tokVal = val;
+ tokCommentsAfter = tokComments;
+ tokRegexpAllowed = type.beforeExpr;
+ }
+
+ var getLineInfo = exports.getLineInfo = function(input, pos) {
+ for (var line = 1, cur = 0;;) {
+ lineBreak.lastIndex = cur;
+ var match = lineBreak.exec(input);
+ if (match && match.index < pos) {
+ ++line;
+ cur = match.index + match[0].length;
+ } else break;
+ }
+ return {line: line, column: pos - cur};
+ };
+
+ function readBlockComment() {
+ var end = input.indexOf("*/", tokPos += 2);
+ if (end === -1) raise(tokPos - 2, "Unterminated comment");
+ if (options.trackComments)
+ (tokComments || (tokComments = [])).push(input.slice(tokPos, end));
+ tokPos = end + 2;
+ }
+
+ function readLineComment() {
+ var start = tokPos;
+ tokPos += 2;
+ while (tokPos < inputLen && !newline.test(input.charAt(tokPos))) ++tokPos;
+ if (options.trackComments)
+ (tokComments || (tokComments = [])).push(input.slice(start, tokPos));
+ }
+
+ function skipSpace() {
+ tokComments = null;
+ while (tokPos < inputLen) {
+ var ch = input.charAt(tokPos);
+ if (ch === "/") {
+ var nextCh = input.charAt(tokPos+1);
+ if (nextCh === "*") {
+ readBlockComment();
+ } else if (nextCh === "/") {
+ readLineComment();
+ } else break;
+ } else if (ch === " " || ch === '\t' || ch === "\n" || ch === "\r" || ch === "\f" ||
+ ch === "\xa0" || ch === "\x0b" || (ch >= "\u1680" && nonASCIIwhitespace.test(ch))) {
+ ++tokPos;
+ } else {
+ break;
+ }
+ }
+ }
+
+ // TOKENIZER READING
+
+ function readToken(forceRegexp) {
+ tokStart = options.linePositions ? curLinePos() : tokPos;
+ tokCommentsBefore = tokComments;
+ if (forceRegexp) return readRegexp();
+ if (tokPos >= inputLen) return finishToken(_eof);
+
+ var ch = input.charAt(tokPos), next;
+ if (identifierStart.test(ch)) return readWord();
+ if (ch === "." && digit.test(input.charAt(tokPos+1))) return readNumber(ch);
+ if (puncChars.test(ch)) {++tokPos; return finishToken(puncTypes[ch], null);}
+ if (digit.test(ch)) {
+ var nextCh = input.charAt(tokPos+1);
+ if (ch === "0" && nextCh === "x" || nextCh === "X") return readHexNumber();
+ else return readNumber(ch);
+ }
+ if (ch === '"' || ch === "'") return readString(ch);
+ if (ch === "/" && tokRegexpAllowed) {++tokPos; return readRegexp();}
+ if (operatorChar.test(ch)) return readOperator(ch);
+ if (ch === "\\" || nonASCIIidentifierStart.test(ch)) return readWord(true);
+ raise(tokPos, "Unexpected character '" + ch + "'");
+ }
+
+ function readRegexp() {
+ var content = "", escaped, inClass, start = tokPos;
+ for (;;) {
+ if (tokPos >= inputLen) raise(start, "Unterminated regular expression");
+ var ch = input.charAt(tokPos);
+ if (newline.test(ch)) raise(start, "Unterminated regular expression");
+ if (!escaped) {
+ if (ch === "[") inClass = true;
+ else if (ch === "]" && inClass) inClass = false;
+ else if (ch === "/" && !inClass) break;
+ escaped = ch === "\\";
+ } else escaped = false;
+ ++tokPos;
+ }
+ var content = input.slice(start, tokPos);
+ ++tokPos;
+ var mods = readWord1(true);
+ if (!reModifiers.test(mods)) raise(start, "Invalid regexp flag");
+ return finishToken(_regexp, new RegExp(content, mods));
+ }
+
+ function readInt(radix, len) {
+ var start = tokPos, total = 0;
+ for (;;) {
+ var code = input.charCodeAt(tokPos), val;
+ if (code >= 97) val = code - 97 + 10; // a
+ else if (code >= 65) val = code - 65 + 10; // A
+ else if (code >= 48 && code <= 57) val = code - 48; // 0-9
+ else val = Infinity;
+ if (val >= radix) break;
+ ++tokPos;
+ total = total * radix + val;
+ }
+ if (tokPos === start || len != null && tokPos - start !== len) return null;
+
+ return total;
+ }
+
+ function readHexNumber() {
+ tokPos += 2; // 0x
+ var val = readInt(16);
+ if (val == null) raise(tokStart + 2, "Expected hexadecimal number");
+ if (identifierStart.test(input.charAt(tokPos))) raise(tokPos, "Identifier directly after number");
+ return finishToken(_num, val);
+ }
+
+ function readNumber(ch) {
+ var start = tokPos, isFloat = ch === ".";
+ if (!isFloat && readInt(10) == null) raise(start, "Invalid number");
+ if (isFloat || input.charAt(tokPos) === ".") {
+ if (sign.test(input.charAt(++tokPos))) ++tokPos;
+ if (readInt(10) == null) raise(start, "Invalid number");
+ isFloat = true;
+ }
+ if (/e/i.test(input.charAt(tokPos))) {
+ if (sign.test(input.charAt(++tokPos))) ++tokPos;
+ if (readInt(10) == null) raise(start, "Invalid number")
+ isFloat = true;
+ }
+ if (identifierStart.test(input.charAt(tokPos))) raise(tokPos, "Identifier directly after number");
+
+ var str = input.slice(start, tokPos), val;
+ if (isFloat) val = parseFloat(str);
+ else if (ch !== "0") val = parseInt(str, 10);
+ else if (/[89]/.test(str) || strict) raise(start, "Invalid number");
+ else val = parseInt(str, 8);
+ return finishToken(_num, val);
+ }
+
+ function readString(quote) {
+ tokPos++;
+ var escaped, str = "";
+ for (;;) {
+ if (tokPos >= inputLen) raise(tokStart, "Unterminated string constant");
+ var ch = input.charAt(tokPos);
+ if (ch === quote && !escaped) {
+ ++tokPos;
+ return finishToken(_string, str);
+ }
+ if (escaped) {
+ var octal = /^[0-7]+/.exec(input.slice(tokPos, tokPos + 3));
+ if (octal) octal = octal[0];
+ while (octal && parseInt(octal, 8) > 255) octal = octal.slice(0, octal.length - 1);
+ if (octal) {
+ if (strict) raise(tokPos - 1, "Octal literal in strict mode");
+ str += String.fromCharCode(parseInt(octal, 8));
+ tokPos += octal.length;
+ } else if (ch === "x") {
+ ++tokPos;
+ str += readHexChar(2);
+ } else if (ch === "u") {
+ ++tokPos;
+ str += readHexChar(4);
+ } else if (ch === "U") {
+ ++tokPos;
+ str += readHexChar(8);
+ } else {
+ ++tokPos;
+ switch (ch) {
+ case "n" : str += "\n"; break;
+ case "r" : str += "\r"; break;
+ case "t" : str += "\t"; break;
+ case "b" : str += "\b"; break;
+ case "v" : str += "\u000b"; break;
+ case "f" : str += "\f"; break;
+ case "0" : str += "\0"; break;
+ case "\r": if (input.charAt(tokPos) === "\n") ++tokPos;
+ case "\n": break;
+ default: str += ch; break;
+ }
+ }
+ escaped = false;
+ } else {
+ if (newline.test(ch)) raise(tokStart, "Unterminated string constant");
+ if (ch !== "\\") str += ch;
+ ++tokPos;
+ escaped = ch === "\\";
+ }
+ }
+ }
+
+ function readHexChar(len) {
+ var n = readInt(16, len);
+ if (n == null) raise(tokStart, "Bad character escape sequence");
+ return String.fromCharCode(n);
+ }
+
+ function readOperator(op) {
+ for (;;) {
+ var ch = input.charAt(++tokPos), nextOp;
+ if (!operatorChar.test(ch) || !opTypes.hasOwnProperty(nextOp = op + ch)) break;
+ op = nextOp;
+ }
+ return finishToken(opTypes[op], op);
+ }
+
+ var containsEsc;
+ function readWord1(startSpecial) {
+ containsEsc = false;
+ var word, first, escaped;
+ if (startSpecial) {
+ word = ""; first = true;
+ } else {
+ identifierG.lastIndex = tokPos;
+ word = identifierG.exec(input)[0];
+ tokPos += word.length;
+ var code = input.charCodeAt(tokPos);
+ if (code < 256 && code !== 92) return word;
+ }
+ for (;;) {
+ var ch = input.charAt(tokPos);
+ if (!escaped) {
+ if (ch === "\\") {}
+ else if ((ch <= "\xff" ? identifier : nonASCIIidentifier).test(ch)) word += ch;
+ else break;
+ ++tokPos;
+ } else {
+ if (ch !== "u") raise(tokPos, "Expecting Unicode escape sequence \\uXXXX");
+ ++tokPos;
+ var esc = readHexChar(4);
+ if (!esc) raise(tokPos - 1, "Invalid Unicode escape");
+ var re = esc <= "\xff" ? (first ? identifier : identifierStart)
+ : (first ? nonASCIIidentifier : nonASCIIidentifierStart);
+ if (!re.test(esc)) raise(tokPos - 4, "Invalid Unicode escape");
+ word += esc;
+ }
+ escaped = ch === "\\";
+ if (escaped) containsEsc = true;
+ first = false;
+ }
+ return word;
+ }
+
+ function readWord(startSpecial) {
+ var word = readWord1(startSpecial);
+ var type = _name;
+ if (!containsEsc) {
+ if (keywords.test(word)) type = keywordTypes[word];
+ else if (options.forbidReserved &&
+ (options.ecmaVersion === 3 ? reservedWords3 : reservedWords5).test(word) ||
+ strict && strictReservedWords.test(word))
+ raise(tokStart, "The keyword '" + word + "' is reserved");
+ }
+ return finishToken(type, word);
+ }
+
+ function raise(pos, message) {
+ if (typeof pos == "number") pos = getLineInfo(input, pos);
+ message += " (" + pos.line + ":" + pos.column + ")";
+ throw new SyntaxError(message);
+ }
+
+})(typeof exports === "undefined" ? (window.acorn = {}) : exports);
--
Alioth's /usr/local/bin/git-commit-notice on /srv/git.debian.org/git/pkg-javascript/node-acorn-jsx.git
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