JavaScriptCore-1218.tar.gz

[apple/javascriptcore.git] / API / JSScriptRef.cpp

diff --git a/API/JSScriptRef.cpp b/API/JSScriptRef.cpp
new file mode 100644 (file)
index 0000000..8a5f3ca
--- /dev/null
+++ b/API/JSScriptRef.cpp
@@ -0,0 +1,151 @@
+/*
+ * Copyright (C) 2012 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. AND ITS CONTRIBUTORS ``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 ITS 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 "APICast.h"
+#include "APIShims.h"
+#include "Completion.h"
+#include "JSBasePrivate.h"
+#include "VM.h"
+#include "JSScriptRefPrivate.h"
+#include "OpaqueJSString.h"
+#include "Operations.h"
+#include "Parser.h"
+#include "SourceCode.h"
+#include "SourceProvider.h"
+
+using namespace JSC;
+
+struct OpaqueJSScript : public SourceProvider {
+public:
+    static WTF::PassRefPtr<OpaqueJSScript> create(VM* vm, const String& url, int startingLineNumber, const String& source)
+    {
+        return WTF::adoptRef(new OpaqueJSScript(vm, url, startingLineNumber, source));
+    }
+
+    const String& source() const OVERRIDE
+    {
+        return m_source;
+    }
+
+    VM* vm() const { return m_vm; }
+
+private:
+    OpaqueJSScript(VM* vm, const String& url, int startingLineNumber, const String& source)
+        : SourceProvider(url, TextPosition(OrdinalNumber::fromOneBasedInt(startingLineNumber), OrdinalNumber::first()))
+        , m_vm(vm)
+        , m_source(source)
+    {
+    }
+
+    ~OpaqueJSScript() { }
+
+    VM* m_vm;
+    String m_source;
+};
+
+static bool parseScript(VM* vm, const SourceCode& source, ParserError& error)
+{
+    return JSC::parse<JSC::ProgramNode>(vm, source, 0, Identifier(), JSParseNormal, JSParseProgramCode, error);
+}
+
+extern "C" {
+
+JSScriptRef JSScriptCreateReferencingImmortalASCIIText(JSContextGroupRef contextGroup, JSStringRef url, int startingLineNumber, const char* source, size_t length, JSStringRef* errorMessage, int* errorLine)
+{
+    VM* vm = toJS(contextGroup);
+    APIEntryShim entryShim(vm);
+    for (size_t i = 0; i < length; i++) {
+        if (!isASCII(source[i]))
+            return 0;
+    }
+
+    RefPtr<OpaqueJSScript> result = OpaqueJSScript::create(vm, url->string(), startingLineNumber, String(StringImpl::createFromLiteral(source, length)));
+
+    ParserError error;
+    if (!parseScript(vm, SourceCode(result), error)) {
+        if (errorMessage)
+            *errorMessage = OpaqueJSString::create(error.m_message).leakRef();
+        if (errorLine)
+            *errorLine = error.m_line;
+        return 0;
+    }
+
+    return result.release().leakRef();
+}
+
+JSScriptRef JSScriptCreateFromString(JSContextGroupRef contextGroup, JSStringRef url, int startingLineNumber, JSStringRef source, JSStringRef* errorMessage, int* errorLine)
+{
+    VM* vm = toJS(contextGroup);
+    APIEntryShim entryShim(vm);
+
+    RefPtr<OpaqueJSScript> result = OpaqueJSScript::create(vm, url->string(), startingLineNumber, source->string());
+
+    ParserError error;
+    if (!parseScript(vm, SourceCode(result), error)) {
+        if (errorMessage)
+            *errorMessage = OpaqueJSString::create(error.m_message).leakRef();
+        if (errorLine)
+            *errorLine = error.m_line;
+        return 0;
+    }
+
+    return result.release().leakRef();
+}
+
+void JSScriptRetain(JSScriptRef script)
+{
+    APIEntryShim entryShim(script->vm());
+    script->ref();
+}
+
+void JSScriptRelease(JSScriptRef script)
+{
+    APIEntryShim entryShim(script->vm());
+    script->deref();
+}
+
+JSValueRef JSScriptEvaluate(JSContextRef context, JSScriptRef script, JSValueRef thisValueRef, JSValueRef* exception)
+{
+    ExecState* exec = toJS(context);
+    APIEntryShim entryShim(exec);
+    if (script->vm() != &exec->vm()) {
+        RELEASE_ASSERT_NOT_REACHED();
+        return 0;
+    }
+    JSValue internalException;
+    JSValue thisValue = thisValueRef ? toJS(exec, thisValueRef) : jsUndefined();
+    JSValue result = evaluate(exec, SourceCode(script), thisValue, &internalException);
+    if (internalException) {
+        if (exception)
+            *exception = toRef(exec, internalException);
+        return 0;
+    }
+    ASSERT(result);
+    return toRef(exec, result);
+}
+
+}