JavaScriptCore-7601.1.46.3.tar.gz

[apple/javascriptcore.git] / runtime / FunctionConstructor.cpp

diff --git a/runtime/FunctionConstructor.cpp b/runtime/FunctionConstructor.cpp
index 3c4379b3925103ba10fd48fe9aaf0b62c11cfa8f..dbe42fa5fe26304e86ee2013b100cabb221c429c 100644 (file)
--- a/runtime/FunctionConstructor.cpp
+++ b/runtime/FunctionConstructor.cpp
@@ -1,6 +1,6 @@
 /*
  *  Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
- *  Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
+ *  Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2013 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
@@ -29,28 +29,28 @@
 #include "JSString.h"
 #include "Lexer.h"
 #include "Nodes.h"
-#include "Operations.h"
+#include "JSCInlines.h"
 #include "Parser.h"
 #include <wtf/text/StringBuilder.h>
 
 namespace JSC {
 
-ASSERT_HAS_TRIVIAL_DESTRUCTOR(FunctionConstructor);
+STATIC_ASSERT_IS_TRIVIALLY_DESTRUCTIBLE(FunctionConstructor);
 
-const ClassInfo FunctionConstructor::s_info = { "Function", &Base::s_info, 0, 0, CREATE_METHOD_TABLE(FunctionConstructor) };
+const ClassInfo FunctionConstructor::s_info = { "Function", &Base::s_info, 0, CREATE_METHOD_TABLE(FunctionConstructor) };
 
-FunctionConstructor::FunctionConstructor(JSGlobalObject* globalObject, Structure* structure)
-    : InternalFunction(globalObject, structure)
+FunctionConstructor::FunctionConstructor(VM& vm, Structure* structure)
+    : InternalFunction(vm, structure)
 {
 }
 
-void FunctionConstructor::finishCreation(ExecState* exec, FunctionPrototype* functionPrototype)
+void FunctionConstructor::finishCreation(VM& vm, FunctionPrototype* functionPrototype)
 {
-    Base::finishCreation(exec->vm(), functionPrototype->classInfo()->className);
-    putDirectWithoutTransition(exec->vm(), exec->propertyNames().prototype, functionPrototype, DontEnum | DontDelete | ReadOnly);
+    Base::finishCreation(vm, functionPrototype->classInfo()->className);
+    putDirectWithoutTransition(vm, vm.propertyNames->prototype, functionPrototype, DontEnum | DontDelete | ReadOnly);
 
     // Number of arguments for constructor
-    putDirectWithoutTransition(exec->vm(), exec->propertyNames().length, jsNumber(1), ReadOnly | DontDelete | DontEnum);
+    putDirectWithoutTransition(vm, vm.propertyNames->length, jsNumber(1), ReadOnly | DontDelete | DontEnum);
 }
 
 static EncodedJSValue JSC_HOST_CALL constructWithFunctionConstructor(ExecState* exec)
@@ -82,43 +82,47 @@ CallType FunctionConstructor::getCallData(JSCell*, CallData& callData)
 JSObject* constructFunction(ExecState* exec, JSGlobalObject* globalObject, const ArgList& args, const Identifier& functionName, const String& sourceURL, const TextPosition& position)
 {
     if (!globalObject->evalEnabled())
-        return throwError(exec, createEvalError(exec, globalObject->evalDisabledErrorMessage()));
+        return exec->vm().throwException(exec, createEvalError(exec, globalObject->evalDisabledErrorMessage()));
     return constructFunctionSkippingEvalEnabledCheck(exec, globalObject, args, functionName, sourceURL, position);
 }
 
-JSObject* constructFunctionSkippingEvalEnabledCheck(ExecState* exec, JSGlobalObject* globalObject, const ArgList& args, const Identifier& functionName, const String& sourceURL, const TextPosition& position)
+JSObject* constructFunctionSkippingEvalEnabledCheck(
+    ExecState* exec, JSGlobalObject* globalObject, const ArgList& args, 
+    const Identifier& functionName, const String& sourceURL, 
+    const TextPosition& position, int overrideLineNumber)
 {
-    // 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
+    // How we stringify functions is sometimes important for web compatibility.
+    // See https://bugs.webkit.org/show_bug.cgi?id=24350.
     String program;
     if (args.isEmpty())
-        program = ASCIILiteral("(function() { \n})");
+        program = makeString("{function ", functionName.string(), "() {\n\n}}");
     else if (args.size() == 1)
-        program = makeString("(function() { ", args.at(0).toString(exec)->value(exec), "\n})");
+        program = makeString("{function ", functionName.string(), "() {\n", args.at(0).toString(exec)->value(exec), "\n}}");
     else {
         StringBuilder builder;
-        builder.appendLiteral("(function(");
-        builder.append(args.at(0).toString(exec)->value(exec));
+        builder.appendLiteral("{function ");
+        builder.append(functionName.string());
+        builder.append('(');
+        builder.append(args.at(0).toString(exec)->view(exec));
         for (size_t i = 1; i < args.size() - 1; i++) {
-            builder.append(',');
-            builder.append(args.at(i).toString(exec)->value(exec));
+            builder.appendLiteral(", ");
+            builder.append(args.at(i).toString(exec)->view(exec));
         }
-        builder.appendLiteral(") { ");
-        builder.append(args.at(args.size() - 1).toString(exec)->value(exec));
-        builder.appendLiteral("\n})");
+        builder.appendLiteral(") {\n");
+        builder.append(args.at(args.size() - 1).toString(exec)->view(exec));
+        builder.appendLiteral("\n}}");
         program = builder.toString();
     }
 
     SourceCode source = makeSource(program, sourceURL, position);
-    JSObject* exception = 0;
-    FunctionExecutable* function = FunctionExecutable::fromGlobalCode(functionName, exec, exec->dynamicGlobalObject()->debugger(), source, &exception);
+    JSObject* exception = nullptr;
+    FunctionExecutable* function = FunctionExecutable::fromGlobalCode(functionName, *exec, source, exception, overrideLineNumber);
     if (!function) {
         ASSERT(exception);
-        return throwError(exec, exception);
+        return exec->vm().throwException(exec, exception);
     }
 
-    return JSFunction::create(exec, function, globalObject);
+    return JSFunction::create(exec->vm(), function, globalObject);
 }
 
 // ECMA 15.3.2 The Function Constructor