1 files changed, 146 insertions, 0 deletions
diff --git a/JavaScriptCore/runtime/FunctionConstructor.cpp b/JavaScriptCore/runtime/FunctionConstructor.cpp
new file mode 100644
index 0000000..adc3d3c
--- /dev/null
+++ b/JavaScriptCore/runtime/FunctionConstructor.cpp
@@ -0,0 +1,146 @@
+/*
+ *  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 "FunctionPrototype.h"
+#include "JSFunction.h"
+#include "JSGlobalObject.h"
+#include "JSString.h"
+#include "Parser.h"
+#include "Debugger.h"
+#include "lexer.h"
+#include "nodes.h"
+
+namespace JSC {
+
+ASSERT_CLASS_FITS_IN_CELL(FunctionConstructor);
+
+FunctionConstructor::FunctionConstructor(ExecState* exec, PassRefPtr<StructureID> structure, FunctionPrototype* functionPrototype)
+    : InternalFunction(&exec->globalData(), structure, Identifier(exec, functionPrototype->classInfo()->className))
+{
+    putDirectWithoutTransition(exec->propertyNames().prototype, functionPrototype, DontEnum | DontDelete | ReadOnly);
+
+    // Number of arguments for constructor
+    putDirectWithoutTransition(exec->propertyNames().length, jsNumber(exec, 1), ReadOnly | DontDelete | DontEnum);
+}
+
+static JSObject* constructWithFunctionConstructor(ExecState* exec, JSObject*, const ArgList& args)
+{
+    return constructFunction(exec, args);
+}
+
+ConstructType FunctionConstructor::getConstructData(ConstructData& constructData)
+{
+    constructData.native.function = constructWithFunctionConstructor;
+    return ConstructTypeHost;
+}
+
+static JSValue* callFunctionConstructor(ExecState* exec, JSObject*, JSValue*, const ArgList& args)
+{
+    return 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)
+{
+    UString p("");
+    UString body;
+    int argsSize = args.size();
+    if (argsSize == 0)
+        body = "";
+    else if (argsSize == 1)
+        body = args.at(exec, 0)->toString(exec);
+    else {
+        p = args.at(exec, 0)->toString(exec);
+        for (int k = 1; k < argsSize - 1; k++)
+            p += "," + args.at(exec, k)->toString(exec);
+        body = args.at(exec, argsSize - 1)->toString(exec);
+    }
+
+    // parse the source code
+    int errLine;
+    UString errMsg;
+    SourceCode source = makeSource(body, sourceURL, lineNumber);
+    RefPtr<FunctionBodyNode> functionBody = exec->globalData().parser->parse<FunctionBodyNode>(exec, exec->dynamicGlobalObject()->debugger(), source, &errLine, &errMsg);
+
+    // No program node == syntax error - throw a syntax error
+    if (!functionBody)
+        // We can't return a Completion(Throw) here, so just set the exception
+        // and return it
+        return throwError(exec, SyntaxError, errMsg, errLine, source.provider()->asID(), source.provider()->url());
+
+    // parse parameter list. throw syntax error on illegal identifiers
+    int len = p.size();
+    const UChar* c = p.data();
+    int i = 0;
+    UString param;
+    Vector<Identifier> parameters;
+    while (i < len) {
+        while (*c == ' ' && i < len)
+            c++, i++;
+        if (Lexer::isIdentStart(c[0])) {  // else error
+            param = UString(c, 1);
+            c++, i++;
+            while (i < len && (Lexer::isIdentPart(c[0]))) {
+                param.append(*c);
+                c++, i++;
+            }
+            while (i < len && *c == ' ')
+                c++, i++;
+            if (i == len) {
+                parameters.append(Identifier(exec, param));
+                break;
+            } else if (*c == ',') {
+                parameters.append(Identifier(exec, param));
+                c++, i++;
+                continue;
+            } // else error
+        }
+        return throwError(exec, SyntaxError, "Syntax error in parameter list");
+    }
+    size_t count = parameters.size();
+    functionBody->finishParsing(parameters.releaseBuffer(), count);
+
+    JSGlobalObject* globalObject = exec->lexicalGlobalObject();
+    ScopeChain scopeChain(globalObject, globalObject->globalData(), exec->globalThisValue());
+    JSFunction* function = new (exec) JSFunction(exec, functionName, functionBody.get(), scopeChain.node());
+
+    JSObject* prototype = constructEmptyObject(exec);
+    prototype->putDirect(exec->propertyNames().constructor, function, DontEnum);
+    function->putDirect(exec->propertyNames().prototype, prototype, DontDelete);
+    return function;
+}
+
+// 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