1311 lines
45 KiB
JavaScript
1311 lines
45 KiB
JavaScript
/***********************************************************************
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A JavaScript tokenizer / parser / beautifier / compressor.
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https://github.com/mishoo/UglifyJS
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-------------------------------- (C) ---------------------------------
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Author: Mihai Bazon
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<mihai.bazon@gmail.com>
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http://mihai.bazon.net/blog
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Distributed under the BSD license:
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Copyright 2012 (c) Mihai Bazon <mihai.bazon@gmail.com>
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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* Redistributions of source code must retain the above
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copyright notice, this list of conditions and the following
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disclaimer.
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* Redistributions in binary form must reproduce the above
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copyright notice, this list of conditions and the following
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disclaimer in the documentation and/or other materials
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provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
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EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
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OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
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TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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SUCH DAMAGE.
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***********************************************************************/
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"use strict";
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(function() {
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var MOZ_TO_ME = {
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Program: function(M) {
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return new AST_Toplevel({
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start: my_start_token(M),
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end: my_end_token(M),
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body: normalize_directives(M.body.map(from_moz)),
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});
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},
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ArrowFunctionExpression: function(M) {
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var argnames = [], rest = null;
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M.params.forEach(function(param) {
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if (param.type == "RestElement") {
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rest = from_moz(param.argument);
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} else {
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argnames.push(from_moz(param));
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}
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});
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var fn = new (M.async ? AST_AsyncArrow : AST_Arrow)({
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start: my_start_token(M),
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end: my_end_token(M),
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argnames: argnames,
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rest: rest,
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});
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var node = from_moz(M.body);
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if (node instanceof AST_BlockStatement) {
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fn.body = normalize_directives(node.body);
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fn.value = null;
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} else {
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fn.body = [];
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fn.value = node;
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}
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return fn;
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},
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FunctionDeclaration: function(M) {
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var ctor;
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if (M.async) {
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ctor = M.generator ? AST_AsyncGeneratorDefun : AST_AsyncDefun;
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} else {
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ctor = M.generator ? AST_GeneratorDefun : AST_Defun;
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}
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var argnames = [], rest = null;
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M.params.forEach(function(param) {
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if (param.type == "RestElement") {
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rest = from_moz(param.argument);
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} else {
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argnames.push(from_moz(param));
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}
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});
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return new ctor({
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start: my_start_token(M),
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end: my_end_token(M),
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name: from_moz(M.id),
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argnames: argnames,
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rest: rest,
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body: normalize_directives(from_moz(M.body).body),
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});
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},
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FunctionExpression: function(M) {
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var ctor;
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if (M.async) {
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ctor = M.generator ? AST_AsyncGeneratorFunction : AST_AsyncFunction;
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} else {
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ctor = M.generator ? AST_GeneratorFunction : AST_Function;
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}
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var argnames = [], rest = null;
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M.params.forEach(function(param) {
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if (param.type == "RestElement") {
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rest = from_moz(param.argument);
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} else {
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argnames.push(from_moz(param));
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}
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});
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return new ctor({
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start: my_start_token(M),
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end: my_end_token(M),
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name: from_moz(M.id),
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argnames: argnames,
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rest: rest,
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body: normalize_directives(from_moz(M.body).body),
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});
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},
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ClassDeclaration: function(M) {
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return new AST_DefClass({
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start: my_start_token(M),
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end: my_end_token(M),
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name: from_moz(M.id),
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extends: from_moz(M.superClass),
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properties: M.body.body.map(from_moz),
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});
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},
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ClassExpression: function(M) {
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return new AST_ClassExpression({
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start: my_start_token(M),
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end: my_end_token(M),
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name: from_moz(M.id),
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extends: from_moz(M.superClass),
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properties: M.body.body.map(from_moz),
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});
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},
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MethodDefinition: function(M) {
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var key = M.key, internal = false;
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if (M.computed) {
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key = from_moz(key);
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} else if (key.type == "PrivateIdentifier") {
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internal = true;
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key = "#" + key.name;
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} else {
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key = read_name(key);
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}
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var ctor = AST_ClassMethod, value = from_moz(M.value);
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switch (M.kind) {
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case "get":
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ctor = AST_ClassGetter;
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value = new AST_Accessor(value);
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break;
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case "set":
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ctor = AST_ClassSetter;
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value = new AST_Accessor(value);
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break;
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}
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return new ctor({
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start: my_start_token(M),
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end: my_end_token(M),
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key: key,
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private: internal,
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static: M.static,
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value: value,
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});
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},
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PropertyDefinition: function(M) {
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var key = M.key, internal = false;
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if (M.computed) {
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key = from_moz(key);
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} else if (key.type == "PrivateIdentifier") {
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internal = true;
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key = "#" + key.name;
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} else {
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key = read_name(key);
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}
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return new AST_ClassField({
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start: my_start_token(M),
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end: my_end_token(M),
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key: key,
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private: internal,
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static: M.static,
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value: from_moz(M.value),
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});
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},
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StaticBlock: function(M) {
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var start = my_start_token(M);
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var end = my_end_token(M);
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return new AST_ClassInit({
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start: start,
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end: end,
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value: new AST_ClassInitBlock({
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start: start,
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end: end,
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body: normalize_directives(M.body.map(from_moz)),
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}),
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});
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},
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ForOfStatement: function(M) {
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return new (M.await ? AST_ForAwaitOf : AST_ForOf)({
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start: my_start_token(M),
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end: my_end_token(M),
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init: from_moz(M.left),
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object: from_moz(M.right),
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body: from_moz(M.body),
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});
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},
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TryStatement: function(M) {
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var handlers = M.handlers || [M.handler];
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if (handlers.length > 1 || M.guardedHandlers && M.guardedHandlers.length) {
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throw new Error("Multiple catch clauses are not supported.");
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}
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return new AST_Try({
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start : my_start_token(M),
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end : my_end_token(M),
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body : from_moz(M.block).body,
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bcatch : from_moz(handlers[0]),
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bfinally : M.finalizer ? new AST_Finally(from_moz(M.finalizer)) : null,
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});
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},
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Property: function(M) {
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var key = M.computed ? from_moz(M.key) : read_name(M.key);
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var args = {
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start: my_start_token(M),
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end: my_end_token(M),
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key: key,
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value: from_moz(M.value),
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};
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if (M.kind == "init") return new (M.method ? AST_ObjectMethod : AST_ObjectKeyVal)(args);
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args.value = new AST_Accessor(args.value);
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if (M.kind == "get") return new AST_ObjectGetter(args);
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if (M.kind == "set") return new AST_ObjectSetter(args);
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},
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ArrayExpression: function(M) {
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return new AST_Array({
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start: my_start_token(M),
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end: my_end_token(M),
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elements: M.elements.map(function(elem) {
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return elem === null ? new AST_Hole() : from_moz(elem);
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}),
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});
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},
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ArrayPattern: function(M) {
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var elements = [], rest = null;
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M.elements.forEach(function(el) {
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if (el === null) {
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elements.push(new AST_Hole());
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} else if (el.type == "RestElement") {
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rest = from_moz(el.argument);
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} else {
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elements.push(from_moz(el));
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}
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});
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return new AST_DestructuredArray({
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start: my_start_token(M),
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end: my_end_token(M),
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elements: elements,
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rest: rest,
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});
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},
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ObjectPattern: function(M) {
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var props = [], rest = null;
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M.properties.forEach(function(prop) {
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if (prop.type == "RestElement") {
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rest = from_moz(prop.argument);
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} else {
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props.push(new AST_DestructuredKeyVal(from_moz(prop)));
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}
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});
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return new AST_DestructuredObject({
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start: my_start_token(M),
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end: my_end_token(M),
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properties: props,
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rest: rest,
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});
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},
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MemberExpression: function(M) {
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return new (M.computed ? AST_Sub : AST_Dot)({
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start: my_start_token(M),
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end: my_end_token(M),
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optional: M.optional,
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expression: from_moz(M.object),
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property: M.computed ? from_moz(M.property) : M.property.name,
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});
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},
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MetaProperty: function(M) {
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var expr = from_moz(M.meta);
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var prop = read_name(M.property);
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if (expr.name == "new" && prop == "target") return new AST_NewTarget({
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start: my_start_token(M),
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end: my_end_token(M),
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name: "new.target",
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});
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return new AST_Dot({
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start: my_start_token(M),
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end: my_end_token(M),
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expression: expr,
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property: prop,
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});
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},
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SwitchCase: function(M) {
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return new (M.test ? AST_Case : AST_Default)({
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start : my_start_token(M),
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end : my_end_token(M),
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expression : from_moz(M.test),
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body : M.consequent.map(from_moz),
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});
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},
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ExportAllDeclaration: function(M) {
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var start = my_start_token(M);
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var end = my_end_token(M);
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return new AST_ExportForeign({
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start: start,
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end: end,
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aliases: [ M.exported ? from_moz_alias(M.exported) : new AST_String({
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start: start,
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value: "*",
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end: end,
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}) ],
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keys: [ new AST_String({
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start: start,
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value: "*",
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end: end,
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}) ],
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path: from_moz(M.source),
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});
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},
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ExportDefaultDeclaration: function(M) {
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var decl = from_moz(M.declaration);
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if (!decl.name) switch (decl.CTOR) {
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case AST_AsyncDefun:
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decl = new AST_AsyncFunction(decl);
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break;
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case AST_AsyncGeneratorDefun:
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decl = new AST_AsyncGeneratorFunction(decl);
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break;
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case AST_DefClass:
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decl = new AST_ClassExpression(decl);
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break;
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case AST_Defun:
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decl = new AST_Function(decl);
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break;
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case AST_GeneratorDefun:
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decl = new AST_GeneratorFunction(decl);
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break;
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}
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return new AST_ExportDefault({
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start: my_start_token(M),
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end: my_end_token(M),
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body: decl,
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});
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},
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ExportNamedDeclaration: function(M) {
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if (M.declaration) return new AST_ExportDeclaration({
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start: my_start_token(M),
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end: my_end_token(M),
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body: from_moz(M.declaration),
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});
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if (M.source) {
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var aliases = [], keys = [];
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M.specifiers.forEach(function(prop) {
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aliases.push(from_moz_alias(prop.exported));
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keys.push(from_moz_alias(prop.local));
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});
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return new AST_ExportForeign({
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start: my_start_token(M),
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end: my_end_token(M),
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aliases: aliases,
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keys: keys,
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path: from_moz(M.source),
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});
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}
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return new AST_ExportReferences({
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start: my_start_token(M),
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end: my_end_token(M),
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properties: M.specifiers.map(function(prop) {
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var sym = new AST_SymbolExport(from_moz(prop.local));
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sym.alias = from_moz_alias(prop.exported);
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return sym;
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}),
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});
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},
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ImportDeclaration: function(M) {
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var start = my_start_token(M);
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var end = my_end_token(M);
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var all = null, def = null, props = null;
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M.specifiers.forEach(function(prop) {
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var sym = new AST_SymbolImport(from_moz(prop.local));
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switch (prop.type) {
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case "ImportDefaultSpecifier":
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def = sym;
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def.key = new AST_String({
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start: start,
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value: "",
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end: end,
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});
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break;
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case "ImportNamespaceSpecifier":
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all = sym;
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all.key = new AST_String({
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start: start,
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value: "*",
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end: end,
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});
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break;
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default:
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sym.key = from_moz_alias(prop.imported);
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if (!props) props = [];
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props.push(sym);
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break;
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}
|
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});
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return new AST_Import({
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start: start,
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end: end,
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all: all,
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default: def,
|
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properties: props,
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path: from_moz(M.source),
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});
|
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},
|
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ImportExpression: function(M) {
|
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var start = my_start_token(M);
|
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var arg = from_moz(M.source);
|
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return new AST_Call({
|
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start: start,
|
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end: my_end_token(M),
|
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expression: new AST_SymbolRef({
|
|
start: start,
|
|
end: arg.start,
|
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name: "import",
|
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}),
|
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args: [ arg ],
|
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});
|
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},
|
|
VariableDeclaration: function(M) {
|
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return new ({
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const: AST_Const,
|
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let: AST_Let,
|
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}[M.kind] || AST_Var)({
|
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start: my_start_token(M),
|
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end: my_end_token(M),
|
|
definitions: M.declarations.map(from_moz),
|
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});
|
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},
|
|
Literal: function(M) {
|
|
var args = {
|
|
start: my_start_token(M),
|
|
end: my_end_token(M),
|
|
};
|
|
if (M.bigint) {
|
|
args.value = M.bigint.toLowerCase() + "n";
|
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return new AST_BigInt(args);
|
|
}
|
|
var val = M.value;
|
|
if (val === null) return new AST_Null(args);
|
|
var rx = M.regex;
|
|
if (rx && rx.pattern) {
|
|
// RegExpLiteral as per ESTree AST spec
|
|
args.value = new RegExp(rx.pattern, rx.flags);
|
|
args.value.raw_source = rx.pattern;
|
|
return new AST_RegExp(args);
|
|
} else if (rx) {
|
|
// support legacy RegExp
|
|
args.value = M.regex && M.raw ? M.raw : val;
|
|
return new AST_RegExp(args);
|
|
}
|
|
switch (typeof val) {
|
|
case "string":
|
|
args.value = val;
|
|
return new AST_String(args);
|
|
case "number":
|
|
if (isNaN(val)) return new AST_NaN(args);
|
|
var negate, node;
|
|
if (isFinite(val)) {
|
|
negate = 1 / val < 0;
|
|
args.value = negate ? -val : val;
|
|
node = new AST_Number(args);
|
|
} else {
|
|
negate = val < 0;
|
|
node = new AST_Infinity(args);
|
|
}
|
|
return negate ? new AST_UnaryPrefix({
|
|
start: args.start,
|
|
end: args.end,
|
|
operator: "-",
|
|
expression: node,
|
|
}) : node;
|
|
case "boolean":
|
|
return new (val ? AST_True : AST_False)(args);
|
|
}
|
|
},
|
|
TemplateLiteral: function(M) {
|
|
return new AST_Template({
|
|
start: my_start_token(M),
|
|
end: my_end_token(M),
|
|
expressions: M.expressions.map(from_moz),
|
|
strings: M.quasis.map(function(el) {
|
|
return el.value.raw;
|
|
}),
|
|
});
|
|
},
|
|
TaggedTemplateExpression: function(M) {
|
|
var tmpl = from_moz(M.quasi);
|
|
tmpl.start = my_start_token(M);
|
|
tmpl.end = my_end_token(M);
|
|
tmpl.tag = from_moz(M.tag);
|
|
return tmpl;
|
|
},
|
|
Identifier: function(M) {
|
|
var p, level = FROM_MOZ_STACK.length - 1;
|
|
do {
|
|
p = FROM_MOZ_STACK[--level];
|
|
} while (p.type == "ArrayPattern"
|
|
|| p.type == "AssignmentPattern" && p.left === FROM_MOZ_STACK[level + 1]
|
|
|| p.type == "ObjectPattern"
|
|
|| p.type == "Property" && p.value === FROM_MOZ_STACK[level + 1]
|
|
|| p.type == "VariableDeclarator" && p.id === FROM_MOZ_STACK[level + 1]);
|
|
var ctor = AST_SymbolRef;
|
|
switch (p.type) {
|
|
case "ArrowFunctionExpression":
|
|
if (p.body !== FROM_MOZ_STACK[level + 1]) ctor = AST_SymbolFunarg;
|
|
break;
|
|
case "BreakStatement":
|
|
case "ContinueStatement":
|
|
ctor = AST_LabelRef;
|
|
break;
|
|
case "CatchClause":
|
|
ctor = AST_SymbolCatch;
|
|
break;
|
|
case "ClassDeclaration":
|
|
if (p.id === FROM_MOZ_STACK[level + 1]) ctor = AST_SymbolDefClass;
|
|
break;
|
|
case "ClassExpression":
|
|
if (p.id === FROM_MOZ_STACK[level + 1]) ctor = AST_SymbolClass;
|
|
break;
|
|
case "FunctionDeclaration":
|
|
ctor = p.id === FROM_MOZ_STACK[level + 1] ? AST_SymbolDefun : AST_SymbolFunarg;
|
|
break;
|
|
case "FunctionExpression":
|
|
ctor = p.id === FROM_MOZ_STACK[level + 1] ? AST_SymbolLambda : AST_SymbolFunarg;
|
|
break;
|
|
case "LabeledStatement":
|
|
ctor = AST_Label;
|
|
break;
|
|
case "VariableDeclaration":
|
|
ctor = {
|
|
const: AST_SymbolConst,
|
|
let: AST_SymbolLet,
|
|
}[p.kind] || AST_SymbolVar;
|
|
break;
|
|
}
|
|
return new ctor({
|
|
start: my_start_token(M),
|
|
end: my_end_token(M),
|
|
name: M.name,
|
|
});
|
|
},
|
|
Super: function(M) {
|
|
return new AST_Super({
|
|
start: my_start_token(M),
|
|
end: my_end_token(M),
|
|
name: "super",
|
|
});
|
|
},
|
|
ThisExpression: function(M) {
|
|
return new AST_This({
|
|
start: my_start_token(M),
|
|
end: my_end_token(M),
|
|
name: "this",
|
|
});
|
|
},
|
|
ParenthesizedExpression: function(M) {
|
|
var node = from_moz(M.expression);
|
|
if (!node.start.parens) node.start.parens = [];
|
|
node.start.parens.push(my_start_token(M));
|
|
if (!node.end.parens) node.end.parens = [];
|
|
node.end.parens.push(my_end_token(M));
|
|
return node;
|
|
},
|
|
ChainExpression: function(M) {
|
|
var node = from_moz(M.expression);
|
|
node.terminal = true;
|
|
return node;
|
|
},
|
|
};
|
|
|
|
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("ExpressionStatement", AST_SimpleStatement, "expression>body");
|
|
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("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("AssignmentPattern", AST_DefaultValue, "left>name, right>value");
|
|
map("ConditionalExpression", AST_Conditional, "test>condition, consequent>consequent, alternate>alternative");
|
|
map("NewExpression", AST_New, "callee>expression, arguments@args, pure=pure");
|
|
map("CallExpression", AST_Call, "callee>expression, arguments@args, optional=optional, pure=pure");
|
|
map("SequenceExpression", AST_Sequence, "expressions@expressions");
|
|
map("SpreadElement", AST_Spread, "argument>expression");
|
|
map("ObjectExpression", AST_Object, "properties@properties");
|
|
map("AwaitExpression", AST_Await, "argument>expression");
|
|
map("YieldExpression", AST_Yield, "argument>expression, delegate=nested");
|
|
|
|
def_to_moz(AST_Toplevel, function To_Moz_Program(M) {
|
|
return to_moz_scope("Program", M);
|
|
});
|
|
|
|
def_to_moz(AST_LambdaDefinition, function To_Moz_FunctionDeclaration(M) {
|
|
var params = M.argnames.map(to_moz);
|
|
if (M.rest) params.push({
|
|
type: "RestElement",
|
|
argument: to_moz(M.rest),
|
|
});
|
|
return {
|
|
type: "FunctionDeclaration",
|
|
id: to_moz(M.name),
|
|
async: is_async(M),
|
|
generator: is_generator(M),
|
|
params: params,
|
|
body: to_moz_scope("BlockStatement", M),
|
|
};
|
|
});
|
|
|
|
def_to_moz(AST_Lambda, function To_Moz_FunctionExpression(M) {
|
|
var params = M.argnames.map(to_moz);
|
|
if (M.rest) params.push({
|
|
type: "RestElement",
|
|
argument: to_moz(M.rest),
|
|
});
|
|
if (is_arrow(M)) return {
|
|
type: "ArrowFunctionExpression",
|
|
async: is_async(M),
|
|
params: params,
|
|
body: M.value ? to_moz(M.value) : to_moz_scope("BlockStatement", M),
|
|
};
|
|
return {
|
|
type: "FunctionExpression",
|
|
id: to_moz(M.name),
|
|
async: is_async(M),
|
|
generator: is_generator(M),
|
|
params: params,
|
|
body: to_moz_scope("BlockStatement", M),
|
|
};
|
|
});
|
|
|
|
def_to_moz(AST_DefClass, function To_Moz_ClassDeclaration(M) {
|
|
return {
|
|
type: "ClassDeclaration",
|
|
id: to_moz(M.name),
|
|
superClass: to_moz(M.extends),
|
|
body: {
|
|
type: "ClassBody",
|
|
body: M.properties.map(to_moz),
|
|
},
|
|
};
|
|
});
|
|
|
|
def_to_moz(AST_ClassExpression, function To_Moz_ClassExpression(M) {
|
|
return {
|
|
type: "ClassExpression",
|
|
id: to_moz(M.name),
|
|
superClass: to_moz(M.extends),
|
|
body: {
|
|
type: "ClassBody",
|
|
body: M.properties.map(to_moz),
|
|
},
|
|
};
|
|
});
|
|
|
|
function To_Moz_MethodDefinition(kind) {
|
|
return function(M) {
|
|
var computed = M.key instanceof AST_Node;
|
|
var key = computed ? to_moz(M.key) : M.private ? {
|
|
type: "PrivateIdentifier",
|
|
name: M.key.slice(1),
|
|
} : {
|
|
type: "Literal",
|
|
value: M.key,
|
|
};
|
|
return {
|
|
type: "MethodDefinition",
|
|
kind: kind,
|
|
computed: computed,
|
|
key: key,
|
|
static: M.static,
|
|
value: to_moz(M.value),
|
|
};
|
|
};
|
|
}
|
|
def_to_moz(AST_ClassGetter, To_Moz_MethodDefinition("get"));
|
|
def_to_moz(AST_ClassSetter, To_Moz_MethodDefinition("set"));
|
|
def_to_moz(AST_ClassMethod, To_Moz_MethodDefinition("method"));
|
|
|
|
def_to_moz(AST_ClassField, function To_Moz_PropertyDefinition(M) {
|
|
var computed = M.key instanceof AST_Node;
|
|
var key = computed ? to_moz(M.key) : M.private ? {
|
|
type: "PrivateIdentifier",
|
|
name: M.key.slice(1),
|
|
} : {
|
|
type: "Literal",
|
|
value: M.key,
|
|
};
|
|
return {
|
|
type: "PropertyDefinition",
|
|
computed: computed,
|
|
key: key,
|
|
static: M.static,
|
|
value: to_moz(M.value),
|
|
};
|
|
});
|
|
|
|
def_to_moz(AST_ClassInit, function To_Moz_StaticBlock(M) {
|
|
return to_moz_scope("StaticBlock", M.value);
|
|
});
|
|
|
|
function To_Moz_ForOfStatement(is_await) {
|
|
return function(M) {
|
|
return {
|
|
type: "ForOfStatement",
|
|
await: is_await,
|
|
left: to_moz(M.init),
|
|
right: to_moz(M.object),
|
|
body: to_moz(M.body),
|
|
};
|
|
};
|
|
}
|
|
def_to_moz(AST_ForAwaitOf, To_Moz_ForOfStatement(true));
|
|
def_to_moz(AST_ForOf, To_Moz_ForOfStatement(false));
|
|
|
|
def_to_moz(AST_Directive, function To_Moz_Directive(M) {
|
|
return {
|
|
type: "ExpressionStatement",
|
|
expression: set_moz_loc(M, {
|
|
type: "Literal",
|
|
value: M.value,
|
|
}),
|
|
};
|
|
});
|
|
|
|
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_ExportDeclaration, function To_Moz_ExportNamedDeclaration_declaration(M) {
|
|
return {
|
|
type: "ExportNamedDeclaration",
|
|
declaration: to_moz(M.body),
|
|
};
|
|
});
|
|
|
|
def_to_moz(AST_ExportDefault, function To_Moz_ExportDefaultDeclaration(M) {
|
|
return {
|
|
type: "ExportDefaultDeclaration",
|
|
declaration: to_moz(M.body),
|
|
};
|
|
});
|
|
|
|
def_to_moz(AST_ExportForeign, function To_Moz_ExportAllDeclaration_ExportNamedDeclaration(M) {
|
|
if (M.keys[0].value == "*") return {
|
|
type: "ExportAllDeclaration",
|
|
exported: M.aliases[0].value == "*" ? null : to_moz_alias(M.aliases[0]),
|
|
source: to_moz(M.path),
|
|
};
|
|
var specifiers = [];
|
|
for (var i = 0; i < M.aliases.length; i++) {
|
|
specifiers.push(set_moz_loc({
|
|
start: M.keys[i].start,
|
|
end: M.aliases[i].end,
|
|
}, {
|
|
type: "ExportSpecifier",
|
|
local: to_moz_alias(M.keys[i]),
|
|
exported: to_moz_alias(M.aliases[i]),
|
|
}));
|
|
}
|
|
return {
|
|
type: "ExportNamedDeclaration",
|
|
specifiers: specifiers,
|
|
source: to_moz(M.path),
|
|
};
|
|
});
|
|
|
|
def_to_moz(AST_ExportReferences, function To_Moz_ExportNamedDeclaration_specifiers(M) {
|
|
return {
|
|
type: "ExportNamedDeclaration",
|
|
specifiers: M.properties.map(function(prop) {
|
|
return set_moz_loc({
|
|
start: prop.start,
|
|
end: prop.alias.end,
|
|
}, {
|
|
type: "ExportSpecifier",
|
|
local: to_moz(prop),
|
|
exported: to_moz_alias(prop.alias),
|
|
});
|
|
}),
|
|
};
|
|
});
|
|
|
|
def_to_moz(AST_Import, function To_Moz_ImportDeclaration(M) {
|
|
var specifiers = M.properties ? M.properties.map(function(prop) {
|
|
return set_moz_loc({
|
|
start: prop.key.start,
|
|
end: prop.end,
|
|
}, {
|
|
type: "ImportSpecifier",
|
|
local: to_moz(prop),
|
|
imported: to_moz_alias(prop.key),
|
|
});
|
|
}) : [];
|
|
if (M.all) specifiers.unshift(set_moz_loc(M.all, {
|
|
type: "ImportNamespaceSpecifier",
|
|
local: to_moz(M.all),
|
|
}));
|
|
if (M.default) specifiers.unshift(set_moz_loc(M.default, {
|
|
type: "ImportDefaultSpecifier",
|
|
local: to_moz(M.default),
|
|
}));
|
|
return {
|
|
type: "ImportDeclaration",
|
|
specifiers: specifiers,
|
|
source: to_moz(M.path),
|
|
};
|
|
});
|
|
|
|
def_to_moz(AST_Definitions, function To_Moz_VariableDeclaration(M) {
|
|
return {
|
|
type: "VariableDeclaration",
|
|
kind: M.TYPE.toLowerCase(),
|
|
declarations: M.definitions.map(to_moz),
|
|
};
|
|
});
|
|
|
|
def_to_moz(AST_PropAccess, function To_Moz_MemberExpression(M) {
|
|
var computed = M instanceof AST_Sub;
|
|
var expr = {
|
|
type: "MemberExpression",
|
|
object: to_moz(M.expression),
|
|
computed: computed,
|
|
optional: M.optional,
|
|
property: computed ? to_moz(M.property) : {
|
|
type: "Identifier",
|
|
name: M.property,
|
|
},
|
|
};
|
|
return M.terminal ? {
|
|
type: "ChainExpression",
|
|
expression: expr,
|
|
} : expr;
|
|
});
|
|
|
|
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_DestructuredArray, function To_Moz_ArrayPattern(M) {
|
|
var elements = M.elements.map(to_moz);
|
|
if (M.rest) elements.push({
|
|
type: "RestElement",
|
|
argument: to_moz(M.rest),
|
|
});
|
|
return {
|
|
type: "ArrayPattern",
|
|
elements: elements,
|
|
};
|
|
});
|
|
|
|
def_to_moz(AST_DestructuredKeyVal, function To_Moz_Property(M) {
|
|
var computed = M.key instanceof AST_Node;
|
|
var key = computed ? to_moz(M.key) : {
|
|
type: "Literal",
|
|
value: M.key,
|
|
};
|
|
return {
|
|
type: "Property",
|
|
kind: "init",
|
|
computed: computed,
|
|
key: key,
|
|
value: to_moz(M.value),
|
|
};
|
|
});
|
|
|
|
def_to_moz(AST_DestructuredObject, function To_Moz_ObjectPattern(M) {
|
|
var props = M.properties.map(to_moz);
|
|
if (M.rest) props.push({
|
|
type: "RestElement",
|
|
argument: to_moz(M.rest),
|
|
});
|
|
return {
|
|
type: "ObjectPattern",
|
|
properties: props,
|
|
};
|
|
});
|
|
|
|
def_to_moz(AST_ObjectProperty, function To_Moz_Property(M) {
|
|
var computed = M.key instanceof AST_Node;
|
|
var key = computed ? to_moz(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,
|
|
computed: computed,
|
|
method: M instanceof AST_ObjectMethod,
|
|
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 || M.name,
|
|
};
|
|
});
|
|
|
|
def_to_moz(AST_Super, function To_Moz_Super() {
|
|
return { type: "Super" };
|
|
});
|
|
|
|
def_to_moz(AST_This, function To_Moz_ThisExpression() {
|
|
return { type: "ThisExpression" };
|
|
});
|
|
|
|
def_to_moz(AST_NewTarget, function To_Moz_MetaProperty() {
|
|
return {
|
|
type: "MetaProperty",
|
|
meta: {
|
|
type: "Identifier",
|
|
name: "new",
|
|
},
|
|
property: {
|
|
type: "Identifier",
|
|
name: "target",
|
|
},
|
|
};
|
|
});
|
|
|
|
def_to_moz(AST_RegExp, function To_Moz_RegExpLiteral(M) {
|
|
var flags = M.value.toString().match(/\/([gimuy]*)$/)[1];
|
|
var value = "/" + M.value.raw_source + "/" + flags;
|
|
return {
|
|
type: "Literal",
|
|
value: value,
|
|
raw: value,
|
|
regex: {
|
|
pattern: M.value.raw_source,
|
|
flags: flags,
|
|
},
|
|
};
|
|
});
|
|
|
|
def_to_moz(AST_BigInt, function To_Moz_BigInt(M) {
|
|
var value = M.value;
|
|
return {
|
|
type: "Literal",
|
|
bigint: value.slice(0, -1),
|
|
raw: value,
|
|
};
|
|
});
|
|
|
|
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_Boolean, To_Moz_Literal);
|
|
def_to_moz(AST_Constant, To_Moz_Literal);
|
|
def_to_moz(AST_Null, To_Moz_Literal);
|
|
|
|
def_to_moz(AST_Atom, function To_Moz_Atom(M) {
|
|
return {
|
|
type: "Identifier",
|
|
name: String(M.value),
|
|
};
|
|
});
|
|
|
|
def_to_moz(AST_Template, function To_Moz_TemplateLiteral_TaggedTemplateExpression(M) {
|
|
var last = M.strings.length - 1;
|
|
var tmpl = {
|
|
type: "TemplateLiteral",
|
|
expressions: M.expressions.map(to_moz),
|
|
quasis: M.strings.map(function(str, index) {
|
|
return {
|
|
type: "TemplateElement",
|
|
tail: index == last,
|
|
value: { raw: str },
|
|
};
|
|
}),
|
|
};
|
|
if (!M.tag) return tmpl;
|
|
return {
|
|
type: "TaggedTemplateExpression",
|
|
tag: to_moz(M.tag),
|
|
quasi: tmpl,
|
|
};
|
|
});
|
|
|
|
AST_Block.DEFMETHOD("to_mozilla_ast", AST_BlockStatement.prototype.to_mozilla_ast);
|
|
AST_Hole.DEFMETHOD("to_mozilla_ast", return_null);
|
|
AST_Node.DEFMETHOD("to_mozilla_ast", function() {
|
|
throw new Error("Cannot convert AST_" + this.TYPE);
|
|
});
|
|
|
|
/* -----[ tools ]----- */
|
|
|
|
function normalize_directives(body) {
|
|
for (var i = 0; i < body.length; i++) {
|
|
var stat = body[i];
|
|
if (!(stat instanceof AST_SimpleStatement)) break;
|
|
var node = stat.body;
|
|
if (!(node instanceof AST_String)) break;
|
|
if (stat.start.pos !== node.start.pos) break;
|
|
body[i] = new AST_Directive(node);
|
|
}
|
|
return body;
|
|
}
|
|
|
|
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 read_name(M) {
|
|
return "" + M[M.type == "Identifier" ? "name" : "value"];
|
|
}
|
|
|
|
function map(moztype, mytype, propmap) {
|
|
var moz_to_me = [
|
|
"start: my_start_token(M)",
|
|
"end: my_end_token(M)",
|
|
];
|
|
var me_to_moz = [
|
|
"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];
|
|
switch (how) {
|
|
case "@":
|
|
moz_to_me.push(my + ": M." + moz + ".map(from_moz)");
|
|
me_to_moz.push(moz + ": M." + my + ".map(to_moz)");
|
|
break;
|
|
case ">":
|
|
moz_to_me.push(my + ": from_moz(M." + moz + ")");
|
|
me_to_moz.push(moz + ": to_moz(M." + my + ")");
|
|
break;
|
|
case "=":
|
|
moz_to_me.push(my + ": M." + moz);
|
|
me_to_moz.push(moz + ": M." + my);
|
|
break;
|
|
case "%":
|
|
moz_to_me.push(my + ": from_moz(M." + moz + ").body");
|
|
me_to_moz.push(moz + ": to_moz_block(M)");
|
|
break;
|
|
default:
|
|
throw new Error("Can't understand operator in propmap: " + prop);
|
|
}
|
|
});
|
|
|
|
MOZ_TO_ME[moztype] = new Function("U2", "my_start_token", "my_end_token", "from_moz", [
|
|
"return function From_Moz_" + moztype + "(M) {",
|
|
" return new U2.AST_" + mytype.TYPE + "({",
|
|
moz_to_me.join(",\n"),
|
|
" });",
|
|
"};",
|
|
].join("\n"))(exports, my_start_token, my_end_token, from_moz);
|
|
def_to_moz(mytype, new Function("to_moz", "to_moz_block", "to_moz_scope", [
|
|
"return function To_Moz_" + moztype + "(M) {",
|
|
" return {",
|
|
me_to_moz.join(",\n"),
|
|
" };",
|
|
"};",
|
|
].join("\n"))(to_moz, to_moz_block, to_moz_scope));
|
|
}
|
|
|
|
var FROM_MOZ_STACK = null;
|
|
|
|
function from_moz(moz) {
|
|
FROM_MOZ_STACK.push(moz);
|
|
var node = null;
|
|
if (moz) {
|
|
if (!HOP(MOZ_TO_ME, moz.type)) throw new Error("Unsupported type: " + moz.type);
|
|
node = MOZ_TO_ME[moz.type](moz);
|
|
}
|
|
FROM_MOZ_STACK.pop();
|
|
return node;
|
|
}
|
|
|
|
function from_moz_alias(moz) {
|
|
return new AST_String({
|
|
start: my_start_token(moz),
|
|
value: read_name(moz),
|
|
end: my_end_token(moz),
|
|
});
|
|
}
|
|
|
|
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;
|
|
ast.walk(new TreeWalker(function(node) {
|
|
if (node instanceof AST_LabelRef) {
|
|
for (var level = 0, parent; parent = this.parent(level); level++) {
|
|
if (parent instanceof AST_Scope) break;
|
|
if (parent instanceof AST_LabeledStatement && parent.label.name == node.name) {
|
|
node.thedef = parent.label;
|
|
break;
|
|
}
|
|
}
|
|
if (!node.thedef) {
|
|
var s = node.start;
|
|
js_error("Undefined label " + node.name, s.file, s.line, s.col, s.pos);
|
|
}
|
|
}
|
|
}));
|
|
return ast;
|
|
};
|
|
|
|
function set_moz_loc(mynode, moznode) {
|
|
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_alias(alias) {
|
|
return is_identifier_string(alias.value) ? set_moz_loc(alias, {
|
|
type: "Identifier",
|
|
name: alias.value,
|
|
}) : to_moz(alias);
|
|
}
|
|
|
|
function to_moz_block(node) {
|
|
return {
|
|
type: "BlockStatement",
|
|
body: node.body.map(to_moz),
|
|
};
|
|
}
|
|
|
|
function to_moz_scope(type, node) {
|
|
var body = node.body.map(to_moz);
|
|
if (node.body[0] instanceof AST_SimpleStatement && node.body[0].body instanceof AST_String) {
|
|
body.unshift(to_moz(new AST_EmptyStatement(node.body[0])));
|
|
}
|
|
return {
|
|
type: type,
|
|
body: body,
|
|
};
|
|
}
|
|
})();
|