JavaScriptCore-7600.1.4.9.tar.gz

[apple/javascriptcore.git] / builtins / BuiltinExecutables.cpp

diff --git a/builtins/BuiltinExecutables.cpp b/builtins/BuiltinExecutables.cpp
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+++ b/builtins/BuiltinExecutables.cpp
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+/*
+ * Copyright (C) 2014 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+#include "config.h"
+#include "BuiltinExecutables.h"
+
+#include "BuiltinNames.h"
+#include "Executable.h"
+#include "JSCInlines.h"
+#include "Parser.h"
+
+namespace JSC {
+
+BuiltinExecutables::BuiltinExecutables(VM& vm)
+    : m_vm(vm)
+#define INITIALIZE_BUILTIN_SOURCE_MEMBERS(name, functionName, length) , m_##name##Source(makeSource(StringImpl::createFromLiteral(s_##name, length)))
+    JSC_FOREACH_BUILTIN(INITIALIZE_BUILTIN_SOURCE_MEMBERS)
+#undef EXPOSE_BUILTIN_STRINGS
+{
+}
+
+UnlinkedFunctionExecutable* BuiltinExecutables::createBuiltinExecutable(const SourceCode& source, const Identifier& name)
+{
+    JSTextPosition positionBeforeLastNewline;
+    ParserError error;
+    RefPtr<ProgramNode> program = parse<ProgramNode>(&m_vm, source, 0, Identifier(), JSParseBuiltin, JSParseProgramCode, error, &positionBeforeLastNewline);
+
+    if (!program) {
+        dataLog("Fatal error compiling builtin function '", name.string(), "': ", error.m_message);
+        CRASH();
+    }
+
+    StatementNode* exprStatement = program->singleStatement();
+    RELEASE_ASSERT(exprStatement);
+    RELEASE_ASSERT(exprStatement->isExprStatement());
+    ExpressionNode* funcExpr = static_cast<ExprStatementNode*>(exprStatement)->expr();
+    RELEASE_ASSERT(funcExpr);
+    RELEASE_ASSERT(funcExpr->isFuncExprNode());
+    FunctionBodyNode* body = static_cast<FuncExprNode*>(funcExpr)->body();
+    RELEASE_ASSERT(!program->hasCapturedVariables());
+    
+    body->setEndPosition(positionBeforeLastNewline);
+    RELEASE_ASSERT(body);
+    RELEASE_ASSERT(body->ident().isNull());
+    
+    // This function assumes an input string that would result in a single anonymous function expression.
+    body->setEndPosition(positionBeforeLastNewline);
+    RELEASE_ASSERT(body);
+    for (const auto& closedVariable : program->closedVariables()) {
+        if (closedVariable == m_vm.propertyNames->arguments.impl())
+        continue;
+        
+        if (closedVariable == m_vm.propertyNames->undefinedKeyword.impl())
+            continue;
+        RELEASE_ASSERT(closedVariable->isEmptyUnique());
+    }
+    body->overrideName(name);
+    UnlinkedFunctionExecutable* functionExecutable = UnlinkedFunctionExecutable::create(&m_vm, source, body, UnlinkedBuiltinFunction);
+    functionExecutable->m_nameValue.set(m_vm, functionExecutable, jsString(&m_vm, name.string()));
+    return functionExecutable;
+}
+
+#define DEFINE_BUILTIN_EXECUTABLES(name, functionName, length) \
+UnlinkedFunctionExecutable* BuiltinExecutables::name##Executable() \
+{\
+    if (!m_##name##Executable)\
+        m_##name##Executable = createBuiltinExecutable(m_##name##Source, m_vm.propertyNames->builtinNames().functionName##PublicName());\
+    return m_##name##Executable.get();\
+}
+JSC_FOREACH_BUILTIN(DEFINE_BUILTIN_EXECUTABLES)
+#undef EXPOSE_BUILTIN_SOURCES
+
+}