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authorFlorian Dold <florian.dold@gmail.com>2017-05-03 15:35:00 +0200
committerFlorian Dold <florian.dold@gmail.com>2017-05-03 15:35:00 +0200
commitde98e0b232509d5f40c135d540a70e415272ff85 (patch)
treea79222a5b58484ab3b80d18efcaaa7ccc4769b33 /node_modules/uglify-js/lib/mozilla-ast.js
parente0c9d480a73fa629c1e4a47d3e721f1d2d345406 (diff)
node_modules
Diffstat (limited to 'node_modules/uglify-js/lib/mozilla-ast.js')
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diff --git a/node_modules/uglify-js/lib/mozilla-ast.js b/node_modules/uglify-js/lib/mozilla-ast.js
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+++ b/node_modules/uglify-js/lib/mozilla-ast.js
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+/***********************************************************************
+
+ A JavaScript tokenizer / parser / beautifier / compressor.
+ https://github.com/mishoo/UglifyJS2
+
+ -------------------------------- (C) ---------------------------------
+
+ Author: Mihai Bazon
+ <mihai.bazon@gmail.com>
+ http://mihai.bazon.net/blog
+
+ Distributed under the BSD license:
+
+ Copyright 2012 (c) Mihai Bazon <mihai.bazon@gmail.com>
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ * Redistributions of source code must retain the above
+ copyright notice, this list of conditions and the following
+ disclaimer.
+
+ * Redistributions in binary form must reproduce the above
+ copyright notice, this list of conditions and the following
+ disclaimer in the documentation and/or other materials
+ provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
+ EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
+ LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+ OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+ TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+ THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ SUCH DAMAGE.
+
+ ***********************************************************************/
+
+"use strict";
+
+(function(){
+
+ var normalize_directives = function(body) {
+ var in_directive = true;
+
+ for (var i = 0; i < body.length; i++) {
+ if (in_directive && body[i] instanceof AST_Statement && body[i].body instanceof AST_String) {
+ body[i] = new AST_Directive({
+ start: body[i].start,
+ end: body[i].end,
+ value: body[i].body.value
+ });
+ } else if (in_directive && !(body[i] instanceof AST_Statement && body[i].body instanceof AST_String)) {
+ in_directive = false;
+ }
+ }
+
+ return body;
+ };
+
+ var MOZ_TO_ME = {
+ Program: function(M) {
+ return new AST_Toplevel({
+ start: my_start_token(M),
+ end: my_end_token(M),
+ body: normalize_directives(M.body.map(from_moz))
+ });
+ },
+ FunctionDeclaration: function(M) {
+ return new AST_Defun({
+ start: my_start_token(M),
+ end: my_end_token(M),
+ name: from_moz(M.id),
+ argnames: M.params.map(from_moz),
+ body: normalize_directives(from_moz(M.body).body)
+ });
+ },
+ FunctionExpression: function(M) {
+ return new AST_Function({
+ start: my_start_token(M),
+ end: my_end_token(M),
+ name: from_moz(M.id),
+ argnames: M.params.map(from_moz),
+ body: normalize_directives(from_moz(M.body).body)
+ });
+ },
+ ExpressionStatement: function(M) {
+ return new AST_SimpleStatement({
+ start: my_start_token(M),
+ end: my_end_token(M),
+ body: from_moz(M.expression)
+ });
+ },
+ TryStatement: function(M) {
+ var handlers = M.handlers || [M.handler];
+ if (handlers.length > 1 || M.guardedHandlers && M.guardedHandlers.length) {
+ throw new Error("Multiple catch clauses are not supported.");
+ }
+ return new AST_Try({
+ start : my_start_token(M),
+ end : my_end_token(M),
+ body : from_moz(M.block).body,
+ bcatch : from_moz(handlers[0]),
+ bfinally : M.finalizer ? new AST_Finally(from_moz(M.finalizer)) : null
+ });
+ },
+ Property: function(M) {
+ var key = M.key;
+ var name = key.type == "Identifier" ? key.name : key.value;
+ var args = {
+ start : my_start_token(key),
+ end : my_end_token(M.value),
+ key : name,
+ value : from_moz(M.value)
+ };
+ switch (M.kind) {
+ case "init":
+ return new AST_ObjectKeyVal(args);
+ case "set":
+ args.value.name = from_moz(key);
+ return new AST_ObjectSetter(args);
+ case "get":
+ args.value.name = from_moz(key);
+ return new AST_ObjectGetter(args);
+ }
+ },
+ ArrayExpression: function(M) {
+ return new AST_Array({
+ start : my_start_token(M),
+ end : my_end_token(M),
+ elements : M.elements.map(function(elem){
+ return elem === null ? new AST_Hole() : from_moz(elem);
+ })
+ });
+ },
+ ObjectExpression: function(M) {
+ return new AST_Object({
+ start : my_start_token(M),
+ end : my_end_token(M),
+ properties : M.properties.map(function(prop){
+ prop.type = "Property";
+ return from_moz(prop)
+ })
+ });
+ },
+ SequenceExpression: function(M) {
+ return AST_Seq.from_array(M.expressions.map(from_moz));
+ },
+ MemberExpression: function(M) {
+ return new (M.computed ? AST_Sub : AST_Dot)({
+ start : my_start_token(M),
+ end : my_end_token(M),
+ property : M.computed ? from_moz(M.property) : M.property.name,
+ expression : from_moz(M.object)
+ });
+ },
+ SwitchCase: function(M) {
+ return new (M.test ? AST_Case : AST_Default)({
+ start : my_start_token(M),
+ end : my_end_token(M),
+ expression : from_moz(M.test),
+ body : M.consequent.map(from_moz)
+ });
+ },
+ VariableDeclaration: function(M) {
+ return new (M.kind === "const" ? AST_Const : AST_Var)({
+ start : my_start_token(M),
+ end : my_end_token(M),
+ definitions : M.declarations.map(from_moz)
+ });
+ },
+ Literal: function(M) {
+ var val = M.value, args = {
+ start : my_start_token(M),
+ end : my_end_token(M)
+ };
+ if (val === null) return new AST_Null(args);
+ switch (typeof val) {
+ case "string":
+ args.value = val;
+ return new AST_String(args);
+ case "number":
+ args.value = val;
+ return new AST_Number(args);
+ case "boolean":
+ return new (val ? AST_True : AST_False)(args);
+ default:
+ var rx = M.regex;
+ if (rx && rx.pattern) {
+ // RegExpLiteral as per ESTree AST spec
+ args.value = new RegExp(rx.pattern, rx.flags).toString();
+ } else {
+ // support legacy RegExp
+ args.value = M.regex && M.raw ? M.raw : val;
+ }
+ return new AST_RegExp(args);
+ }
+ },
+ Identifier: function(M) {
+ var p = FROM_MOZ_STACK[FROM_MOZ_STACK.length - 2];
+ return new ( p.type == "LabeledStatement" ? AST_Label
+ : p.type == "VariableDeclarator" && p.id === M ? (p.kind == "const" ? AST_SymbolConst : AST_SymbolVar)
+ : p.type == "FunctionExpression" ? (p.id === M ? AST_SymbolLambda : AST_SymbolFunarg)
+ : p.type == "FunctionDeclaration" ? (p.id === M ? AST_SymbolDefun : AST_SymbolFunarg)
+ : p.type == "CatchClause" ? AST_SymbolCatch
+ : p.type == "BreakStatement" || p.type == "ContinueStatement" ? AST_LabelRef
+ : AST_SymbolRef)({
+ start : my_start_token(M),
+ end : my_end_token(M),
+ name : M.name
+ });
+ }
+ };
+
+ MOZ_TO_ME.UpdateExpression =
+ MOZ_TO_ME.UnaryExpression = function To_Moz_Unary(M) {
+ var prefix = "prefix" in M ? M.prefix
+ : M.type == "UnaryExpression" ? true : false;
+ return new (prefix ? AST_UnaryPrefix : AST_UnaryPostfix)({
+ start : my_start_token(M),
+ end : my_end_token(M),
+ operator : M.operator,
+ expression : from_moz(M.argument)
+ });
+ };
+
+ map("EmptyStatement", AST_EmptyStatement);
+ map("BlockStatement", AST_BlockStatement, "body@body");
+ map("IfStatement", AST_If, "test>condition, consequent>body, alternate>alternative");
+ map("LabeledStatement", AST_LabeledStatement, "label>label, body>body");
+ map("BreakStatement", AST_Break, "label>label");
+ map("ContinueStatement", AST_Continue, "label>label");
+ map("WithStatement", AST_With, "object>expression, body>body");
+ map("SwitchStatement", AST_Switch, "discriminant>expression, cases@body");
+ map("ReturnStatement", AST_Return, "argument>value");
+ map("ThrowStatement", AST_Throw, "argument>value");
+ map("WhileStatement", AST_While, "test>condition, body>body");
+ map("DoWhileStatement", AST_Do, "test>condition, body>body");
+ map("ForStatement", AST_For, "init>init, test>condition, update>step, body>body");
+ map("ForInStatement", AST_ForIn, "left>init, right>object, body>body");
+ map("DebuggerStatement", AST_Debugger);
+ map("VariableDeclarator", AST_VarDef, "id>name, init>value");
+ map("CatchClause", AST_Catch, "param>argname, body%body");
+
+ map("ThisExpression", AST_This);
+ map("BinaryExpression", AST_Binary, "operator=operator, left>left, right>right");
+ map("LogicalExpression", AST_Binary, "operator=operator, left>left, right>right");
+ map("AssignmentExpression", AST_Assign, "operator=operator, left>left, right>right");
+ map("ConditionalExpression", AST_Conditional, "test>condition, consequent>consequent, alternate>alternative");
+ map("NewExpression", AST_New, "callee>expression, arguments@args");
+ map("CallExpression", AST_Call, "callee>expression, arguments@args");
+
+ def_to_moz(AST_Toplevel, function To_Moz_Program(M) {
+ return {
+ type: "Program",
+ body: M.body.map(to_moz)
+ };
+ });
+
+ def_to_moz(AST_Defun, function To_Moz_FunctionDeclaration(M) {
+ return {
+ type: "FunctionDeclaration",
+ id: to_moz(M.name),
+ params: M.argnames.map(to_moz),
+ body: to_moz_block(M)
+ }
+ });
+
+ def_to_moz(AST_Function, function To_Moz_FunctionExpression(M) {
+ return {
+ type: "FunctionExpression",
+ id: to_moz(M.name),
+ params: M.argnames.map(to_moz),
+ body: to_moz_block(M)
+ }
+ });
+
+ def_to_moz(AST_Directive, function To_Moz_Directive(M) {
+ return {
+ type: "ExpressionStatement",
+ expression: {
+ type: "Literal",
+ value: M.value
+ }
+ };
+ });
+
+ def_to_moz(AST_SimpleStatement, function To_Moz_ExpressionStatement(M) {
+ return {
+ type: "ExpressionStatement",
+ expression: to_moz(M.body)
+ };
+ });
+
+ def_to_moz(AST_SwitchBranch, function To_Moz_SwitchCase(M) {
+ return {
+ type: "SwitchCase",
+ test: to_moz(M.expression),
+ consequent: M.body.map(to_moz)
+ };
+ });
+
+ def_to_moz(AST_Try, function To_Moz_TryStatement(M) {
+ return {
+ type: "TryStatement",
+ block: to_moz_block(M),
+ handler: to_moz(M.bcatch),
+ guardedHandlers: [],
+ finalizer: to_moz(M.bfinally)
+ };
+ });
+
+ def_to_moz(AST_Catch, function To_Moz_CatchClause(M) {
+ return {
+ type: "CatchClause",
+ param: to_moz(M.argname),
+ guard: null,
+ body: to_moz_block(M)
+ };
+ });
+
+ def_to_moz(AST_Definitions, function To_Moz_VariableDeclaration(M) {
+ return {
+ type: "VariableDeclaration",
+ kind: M instanceof AST_Const ? "const" : "var",
+ declarations: M.definitions.map(to_moz)
+ };
+ });
+
+ def_to_moz(AST_Seq, function To_Moz_SequenceExpression(M) {
+ return {
+ type: "SequenceExpression",
+ expressions: M.to_array().map(to_moz)
+ };
+ });
+
+ def_to_moz(AST_PropAccess, function To_Moz_MemberExpression(M) {
+ var isComputed = M instanceof AST_Sub;
+ return {
+ type: "MemberExpression",
+ object: to_moz(M.expression),
+ computed: isComputed,
+ property: isComputed ? to_moz(M.property) : {type: "Identifier", name: M.property}
+ };
+ });
+
+ def_to_moz(AST_Unary, function To_Moz_Unary(M) {
+ return {
+ type: M.operator == "++" || M.operator == "--" ? "UpdateExpression" : "UnaryExpression",
+ operator: M.operator,
+ prefix: M instanceof AST_UnaryPrefix,
+ argument: to_moz(M.expression)
+ };
+ });
+
+ def_to_moz(AST_Binary, function To_Moz_BinaryExpression(M) {
+ return {
+ type: M.operator == "&&" || M.operator == "||" ? "LogicalExpression" : "BinaryExpression",
+ left: to_moz(M.left),
+ operator: M.operator,
+ right: to_moz(M.right)
+ };
+ });
+
+ def_to_moz(AST_Array, function To_Moz_ArrayExpression(M) {
+ return {
+ type: "ArrayExpression",
+ elements: M.elements.map(to_moz)
+ };
+ });
+
+ def_to_moz(AST_Object, function To_Moz_ObjectExpression(M) {
+ return {
+ type: "ObjectExpression",
+ properties: M.properties.map(to_moz)
+ };
+ });
+
+ def_to_moz(AST_ObjectProperty, function To_Moz_Property(M) {
+ var key = (
+ is_identifier(M.key)
+ ? {type: "Identifier", name: M.key}
+ : {type: "Literal", value: M.key}
+ );
+ var kind;
+ if (M instanceof AST_ObjectKeyVal) {
+ kind = "init";
+ } else
+ if (M instanceof AST_ObjectGetter) {
+ kind = "get";
+ } else
+ if (M instanceof AST_ObjectSetter) {
+ kind = "set";
+ }
+ return {
+ type: "Property",
+ kind: kind,
+ key: key,
+ value: to_moz(M.value)
+ };
+ });
+
+ def_to_moz(AST_Symbol, function To_Moz_Identifier(M) {
+ var def = M.definition();
+ return {
+ type: "Identifier",
+ name: def ? def.mangled_name || def.name : M.name
+ };
+ });
+
+ def_to_moz(AST_RegExp, function To_Moz_RegExpLiteral(M) {
+ var value = M.value;
+ return {
+ type: "Literal",
+ value: value,
+ raw: value.toString(),
+ regex: {
+ pattern: value.source,
+ flags: value.toString().match(/[gimuy]*$/)[0]
+ }
+ };
+ });
+
+ def_to_moz(AST_Constant, function To_Moz_Literal(M) {
+ var value = M.value;
+ if (typeof value === 'number' && (value < 0 || (value === 0 && 1 / value < 0))) {
+ return {
+ type: "UnaryExpression",
+ operator: "-",
+ prefix: true,
+ argument: {
+ type: "Literal",
+ value: -value,
+ raw: M.start.raw
+ }
+ };
+ }
+ return {
+ type: "Literal",
+ value: value,
+ raw: M.start.raw
+ };
+ });
+
+ def_to_moz(AST_Atom, function To_Moz_Atom(M) {
+ return {
+ type: "Identifier",
+ name: String(M.value)
+ };
+ });
+
+ AST_Boolean.DEFMETHOD("to_mozilla_ast", AST_Constant.prototype.to_mozilla_ast);
+ AST_Null.DEFMETHOD("to_mozilla_ast", AST_Constant.prototype.to_mozilla_ast);
+ AST_Hole.DEFMETHOD("to_mozilla_ast", function To_Moz_ArrayHole() { return null });
+
+ AST_Block.DEFMETHOD("to_mozilla_ast", AST_BlockStatement.prototype.to_mozilla_ast);
+ AST_Lambda.DEFMETHOD("to_mozilla_ast", AST_Function.prototype.to_mozilla_ast);
+
+ /* -----[ tools ]----- */
+
+ function raw_token(moznode) {
+ if (moznode.type == "Literal") {
+ return moznode.raw != null ? moznode.raw : moznode.value + "";
+ }
+ }
+
+ function my_start_token(moznode) {
+ var loc = moznode.loc, start = loc && loc.start;
+ var range = moznode.range;
+ return new AST_Token({
+ file : loc && loc.source,
+ line : start && start.line,
+ col : start && start.column,
+ pos : range ? range[0] : moznode.start,
+ endline : start && start.line,
+ endcol : start && start.column,
+ endpos : range ? range[0] : moznode.start,
+ raw : raw_token(moznode),
+ });
+ };
+
+ function my_end_token(moznode) {
+ var loc = moznode.loc, end = loc && loc.end;
+ var range = moznode.range;
+ return new AST_Token({
+ file : loc && loc.source,
+ line : end && end.line,
+ col : end && end.column,
+ pos : range ? range[1] : moznode.end,
+ endline : end && end.line,
+ endcol : end && end.column,
+ endpos : range ? range[1] : moznode.end,
+ raw : raw_token(moznode),
+ });
+ };
+
+ function map(moztype, mytype, propmap) {
+ var moz_to_me = "function From_Moz_" + moztype + "(M){\n";
+ moz_to_me += "return new U2." + mytype.name + "({\n" +
+ "start: my_start_token(M),\n" +
+ "end: my_end_token(M)";
+
+ var me_to_moz = "function To_Moz_" + moztype + "(M){\n";
+ me_to_moz += "return {\n" +
+ "type: " + JSON.stringify(moztype);
+
+ if (propmap) propmap.split(/\s*,\s*/).forEach(function(prop){
+ var m = /([a-z0-9$_]+)(=|@|>|%)([a-z0-9$_]+)/i.exec(prop);
+ if (!m) throw new Error("Can't understand property map: " + prop);
+ var moz = m[1], how = m[2], my = m[3];
+ moz_to_me += ",\n" + my + ": ";
+ me_to_moz += ",\n" + moz + ": ";
+ switch (how) {
+ case "@":
+ moz_to_me += "M." + moz + ".map(from_moz)";
+ me_to_moz += "M." + my + ".map(to_moz)";
+ break;
+ case ">":
+ moz_to_me += "from_moz(M." + moz + ")";
+ me_to_moz += "to_moz(M." + my + ")";
+ break;
+ case "=":
+ moz_to_me += "M." + moz;
+ me_to_moz += "M." + my;
+ break;
+ case "%":
+ moz_to_me += "from_moz(M." + moz + ").body";
+ me_to_moz += "to_moz_block(M)";
+ break;
+ default:
+ throw new Error("Can't understand operator in propmap: " + prop);
+ }
+ });
+
+ moz_to_me += "\n})\n}";
+ me_to_moz += "\n}\n}";
+
+ //moz_to_me = parse(moz_to_me).print_to_string({ beautify: true });
+ //me_to_moz = parse(me_to_moz).print_to_string({ beautify: true });
+ //console.log(moz_to_me);
+
+ moz_to_me = new Function("U2", "my_start_token", "my_end_token", "from_moz", "return(" + moz_to_me + ")")(
+ exports, my_start_token, my_end_token, from_moz
+ );
+ me_to_moz = new Function("to_moz", "to_moz_block", "return(" + me_to_moz + ")")(
+ to_moz, to_moz_block
+ );
+ MOZ_TO_ME[moztype] = moz_to_me;
+ def_to_moz(mytype, me_to_moz);
+ };
+
+ var FROM_MOZ_STACK = null;
+
+ function from_moz(node) {
+ FROM_MOZ_STACK.push(node);
+ var ret = node != null ? MOZ_TO_ME[node.type](node) : null;
+ FROM_MOZ_STACK.pop();
+ return ret;
+ };
+
+ AST_Node.from_mozilla_ast = function(node){
+ var save_stack = FROM_MOZ_STACK;
+ FROM_MOZ_STACK = [];
+ var ast = from_moz(node);
+ FROM_MOZ_STACK = save_stack;
+ return ast;
+ };
+
+ function set_moz_loc(mynode, moznode, myparent) {
+ var start = mynode.start;
+ var end = mynode.end;
+ if (start.pos != null && end.endpos != null) {
+ moznode.range = [start.pos, end.endpos];
+ }
+ if (start.line) {
+ moznode.loc = {
+ start: {line: start.line, column: start.col},
+ end: end.endline ? {line: end.endline, column: end.endcol} : null
+ };
+ if (start.file) {
+ moznode.loc.source = start.file;
+ }
+ }
+ return moznode;
+ };
+
+ function def_to_moz(mytype, handler) {
+ mytype.DEFMETHOD("to_mozilla_ast", function() {
+ return set_moz_loc(this, handler(this));
+ });
+ };
+
+ function to_moz(node) {
+ return node != null ? node.to_mozilla_ast() : null;
+ };
+
+ function to_moz_block(node) {
+ return {
+ type: "BlockStatement",
+ body: node.body.map(to_moz)
+ };
+ };
+
+})();