From cad810f21b803229eb11403f9209855525a25d57 Mon Sep 17 00:00:00 2001
From: Steve Block <steveblock@google.com>
Date: Fri, 6 May 2011 11:45:16 +0100
Subject: Merge WebKit at r75315: Initial merge by git.

Change-Id: I570314b346ce101c935ed22a626b48c2af266b84
---
 .../JavaScriptCore/runtime/FunctionConstructor.cpp | 119 +++++++++++++++++++++
 1 file changed, 119 insertions(+)
 create mode 100644 Source/JavaScriptCore/runtime/FunctionConstructor.cpp

(limited to 'Source/JavaScriptCore/runtime/FunctionConstructor.cpp')

diff --git a/Source/JavaScriptCore/runtime/FunctionConstructor.cpp b/Source/JavaScriptCore/runtime/FunctionConstructor.cpp
new file mode 100644
index 0000000..45b4802
--- /dev/null
+++ b/Source/JavaScriptCore/runtime/FunctionConstructor.cpp
@@ -0,0 +1,119 @@
+/*
+ *  Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
+ *  Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 of the License, or (at your option) any later version.
+ *
+ *  This library is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public
+ *  License along with this library; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#include "config.h"
+#include "FunctionConstructor.h"
+
+#include "Debugger.h"
+#include "ExceptionHelpers.h"
+#include "FunctionPrototype.h"
+#include "JSFunction.h"
+#include "JSGlobalObject.h"
+#include "JSString.h"
+#include "Lexer.h"
+#include "Nodes.h"
+#include "Parser.h"
+#include "UStringBuilder.h"
+#include "UStringConcatenate.h"
+
+namespace JSC {
+
+ASSERT_CLASS_FITS_IN_CELL(FunctionConstructor);
+
+FunctionConstructor::FunctionConstructor(ExecState* exec, JSGlobalObject* globalObject, NonNullPassRefPtr<Structure> structure, FunctionPrototype* functionPrototype)
+    : InternalFunction(&exec->globalData(), globalObject, structure, Identifier(exec, functionPrototype->classInfo()->className))
+{
+    putDirectWithoutTransition(exec->propertyNames().prototype, functionPrototype, DontEnum | DontDelete | ReadOnly);
+
+    // Number of arguments for constructor
+    putDirectWithoutTransition(exec->propertyNames().length, jsNumber(1), ReadOnly | DontDelete | DontEnum);
+}
+
+static EncodedJSValue JSC_HOST_CALL constructWithFunctionConstructor(ExecState* exec)
+{
+    ArgList args(exec);
+    return JSValue::encode(constructFunction(exec, args));
+}
+
+ConstructType FunctionConstructor::getConstructData(ConstructData& constructData)
+{
+    constructData.native.function = constructWithFunctionConstructor;
+    return ConstructTypeHost;
+}
+
+static EncodedJSValue JSC_HOST_CALL callFunctionConstructor(ExecState* exec)
+{
+    ArgList args(exec);
+    return JSValue::encode(constructFunction(exec, args));
+}
+
+// ECMA 15.3.1 The Function Constructor Called as a Function
+CallType FunctionConstructor::getCallData(CallData& callData)
+{
+    callData.native.function = callFunctionConstructor;
+    return CallTypeHost;
+}
+
+// ECMA 15.3.2 The Function Constructor
+JSObject* constructFunction(ExecState* exec, const ArgList& args, const Identifier& functionName, const UString& sourceURL, int lineNumber)
+{
+    // Functions need to have a space following the opening { due to for web compatibility
+    // see https://bugs.webkit.org/show_bug.cgi?id=24350
+    // We also need \n before the closing } to handle // comments at the end of the last line
+    UString program;
+    if (args.isEmpty())
+        program = "(function() { \n})";
+    else if (args.size() == 1)
+        program = makeUString("(function() { ", args.at(0).toString(exec), "\n})");
+    else {
+        UStringBuilder builder;
+        builder.append("(function(");
+        builder.append(args.at(0).toString(exec));
+        for (size_t i = 1; i < args.size() - 1; i++) {
+            builder.append(",");
+            builder.append(args.at(i).toString(exec));
+        }
+        builder.append(") { ");
+        builder.append(args.at(args.size() - 1).toString(exec));
+        builder.append("\n})");
+        program = builder.toUString();
+    }
+
+    JSGlobalObject* globalObject = exec->lexicalGlobalObject();
+    JSGlobalData& globalData = globalObject->globalData();
+    SourceCode source = makeSource(program, sourceURL, lineNumber);
+    JSObject* exception = 0;
+    RefPtr<FunctionExecutable> function = FunctionExecutable::fromGlobalCode(functionName, exec, exec->dynamicGlobalObject()->debugger(), source, &exception);
+    if (!function) {
+        ASSERT(exception);
+        return throwError(exec, exception);
+    }
+
+    ScopeChain scopeChain(globalObject, &globalData, globalObject, exec->globalThisValue());
+    return new (exec) JSFunction(exec, function, scopeChain.node());
+}
+
+// ECMA 15.3.2 The Function Constructor
+JSObject* constructFunction(ExecState* exec, const ArgList& args)
+{
+    return constructFunction(exec, args, Identifier(exec, "anonymous"), UString(), 1);
+}
+
+} // namespace JSC
-- 
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