1508 lines
41 KiB
JavaScript
1508 lines
41 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 = [],
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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 = [],
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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 = [],
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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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CallExpression: function (M) {
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return new AST_Call({
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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.callee),
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args: M.arguments.map(from_moz),
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optional: M.optional,
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pure: M.pure,
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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,
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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,
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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,
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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 (
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handlers.length > 1 ||
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(M.guardedHandlers && M.guardedHandlers.length)
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) {
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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')
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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 = [],
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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 = [],
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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')
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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: [
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M.exported ?
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from_moz_alias(M.exported)
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: 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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],
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keys: [
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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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],
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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)
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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)
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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 = [],
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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,
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def = null,
|
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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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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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});
|
|
},
|
|
ImportExpression: function (M) {
|
|
var start = my_start_token(M);
|
|
var arg = from_moz(M.source);
|
|
return new AST_Call({
|
|
start: start,
|
|
end: my_end_token(M),
|
|
expression: new AST_SymbolRef({
|
|
start: start,
|
|
end: arg.start,
|
|
name: 'import',
|
|
}),
|
|
args: [arg],
|
|
});
|
|
},
|
|
VariableDeclaration: function (M) {
|
|
return new ({
|
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const: AST_Const,
|
|
let: AST_Let,
|
|
}[M.kind] || AST_Var)({
|
|
start: my_start_token(M),
|
|
end: my_end_token(M),
|
|
definitions: M.declarations.map(from_moz),
|
|
});
|
|
},
|
|
Literal: function (M) {
|
|
var args = {
|
|
start: my_start_token(M),
|
|
end: my_end_token(M),
|
|
};
|
|
if (M.bigint) {
|
|
args.value = M.bigint.toLowerCase();
|
|
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('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,
|
|
expression: !!M.value,
|
|
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_Call, function To_Moz_CallExpression(M) {
|
|
var expr = M.expression;
|
|
if (
|
|
M.args.length == 1 &&
|
|
expr instanceof AST_SymbolRef &&
|
|
expr.name == 'import'
|
|
)
|
|
return {
|
|
type: 'ImportExpression',
|
|
source: to_moz(M.args[0]),
|
|
};
|
|
return {
|
|
type: 'CallExpression',
|
|
callee: to_moz(expr),
|
|
arguments: M.args.map(to_moz),
|
|
optional: M.optional,
|
|
pure: M.pure,
|
|
};
|
|
});
|
|
|
|
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',
|
|
directive: M.value,
|
|
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),
|
|
finalizer: to_moz(M.bfinally),
|
|
};
|
|
});
|
|
|
|
def_to_moz(AST_Catch, function To_Moz_CatchClause(M) {
|
|
return {
|
|
type: 'CatchClause',
|
|
param: to_moz(M.argname),
|
|
body: to_moz_block(M),
|
|
};
|
|
});
|
|
|
|
def_to_moz(
|
|
AST_ExportDeclaration,
|
|
function To_Moz_ExportNamedDeclaration_declaration(M) {
|
|
return {
|
|
type: 'ExportNamedDeclaration',
|
|
declaration: to_moz(M.body),
|
|
specifiers: [],
|
|
};
|
|
}
|
|
);
|
|
|
|
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,
|
|
method: false,
|
|
shorthand: false,
|
|
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,
|
|
shorthand: false,
|
|
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,
|
|
raw: value + 'n',
|
|
};
|
|
});
|
|
|
|
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,
|
|
};
|
|
}
|
|
})();
|