1/*
2 * Copyright (C) 2014 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26
27#include "config.h"
28#include "BuiltinExecutables.h"
29
30#include "BuiltinNames.h"
31#include "Executable.h"
32#include "JSCInlines.h"
33#include "Parser.h"
34
35namespace JSC {
36
37BuiltinExecutables::BuiltinExecutables(VM& vm)
38    : m_vm(vm)
39#define INITIALIZE_BUILTIN_SOURCE_MEMBERS(name, functionName, length) , m_##name##Source(makeSource(StringImpl::createFromLiteral(s_##name, length)))
40    JSC_FOREACH_BUILTIN(INITIALIZE_BUILTIN_SOURCE_MEMBERS)
41#undef EXPOSE_BUILTIN_STRINGS
42{
43}
44
45UnlinkedFunctionExecutable* BuiltinExecutables::createBuiltinExecutable(const SourceCode& source, const Identifier& name)
46{
47    JSTextPosition positionBeforeLastNewline;
48    ParserError error;
49    RefPtr<ProgramNode> program = parse<ProgramNode>(&m_vm, source, 0, Identifier(), JSParseBuiltin, JSParseProgramCode, error, &positionBeforeLastNewline);
50
51    if (!program) {
52        dataLog("Fatal error compiling builtin function '", name.string(), "': ", error.m_message);
53        CRASH();
54    }
55
56    StatementNode* exprStatement = program->singleStatement();
57    RELEASE_ASSERT(exprStatement);
58    RELEASE_ASSERT(exprStatement->isExprStatement());
59    ExpressionNode* funcExpr = static_cast<ExprStatementNode*>(exprStatement)->expr();
60    RELEASE_ASSERT(funcExpr);
61    RELEASE_ASSERT(funcExpr->isFuncExprNode());
62    FunctionBodyNode* body = static_cast<FuncExprNode*>(funcExpr)->body();
63    RELEASE_ASSERT(!program->hasCapturedVariables());
64
65    body->setEndPosition(positionBeforeLastNewline);
66    RELEASE_ASSERT(body);
67    RELEASE_ASSERT(body->ident().isNull());
68
69    // This function assumes an input string that would result in a single anonymous function expression.
70    body->setEndPosition(positionBeforeLastNewline);
71    RELEASE_ASSERT(body);
72    for (const auto& closedVariable : program->closedVariables()) {
73        if (closedVariable == m_vm.propertyNames->arguments.impl())
74        continue;
75
76        if (closedVariable == m_vm.propertyNames->undefinedKeyword.impl())
77            continue;
78        RELEASE_ASSERT(closedVariable->isEmptyUnique());
79    }
80    body->overrideName(name);
81    UnlinkedFunctionExecutable* functionExecutable = UnlinkedFunctionExecutable::create(&m_vm, source, body, UnlinkedBuiltinFunction);
82    functionExecutable->m_nameValue.set(m_vm, functionExecutable, jsString(&m_vm, name.string()));
83    return functionExecutable;
84}
85
86#define DEFINE_BUILTIN_EXECUTABLES(name, functionName, length) \
87UnlinkedFunctionExecutable* BuiltinExecutables::name##Executable() \
88{\
89    if (!m_##name##Executable)\
90        m_##name##Executable = createBuiltinExecutable(m_##name##Source, m_vm.propertyNames->builtinNames().functionName##PublicName());\
91    return m_##name##Executable.get();\
92}
93JSC_FOREACH_BUILTIN(DEFINE_BUILTIN_EXECUTABLES)
94#undef EXPOSE_BUILTIN_SOURCES
95
96}
97