JavaScriptCore-7600.1.4.9.tar.gz

[apple/javascriptcore.git] / inspector / InjectedScriptBase.cpp

diff --git a/inspector/InjectedScriptBase.cpp b/inspector/InjectedScriptBase.cpp
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+/*
+ * Copyright (C) 2013 Apple Inc. All rights reserved.
+ * Copyright (C) 2012 Google 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:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * 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.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
+ * OWNER 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 "InjectedScriptBase.h"
+
+#if ENABLE(INSPECTOR)
+
+#include "InspectorValues.h"
+#include "JSCInlines.h"
+#include "JSGlobalObject.h"
+#include "ScriptFunctionCall.h"
+#include <wtf/text/WTFString.h>
+
+namespace Inspector {
+
+InjectedScriptBase::InjectedScriptBase(const String& name)
+    : m_name(name)
+    , m_environment(nullptr)
+{
+}
+
+InjectedScriptBase::InjectedScriptBase(const String& name, Deprecated::ScriptObject injectedScriptObject, InspectorEnvironment* environment)
+    : m_name(name)
+    , m_injectedScriptObject(injectedScriptObject)
+    , m_environment(environment)
+{
+}
+
+InjectedScriptBase::~InjectedScriptBase()
+{
+}
+
+void InjectedScriptBase::initialize(Deprecated::ScriptObject injectedScriptObject, InspectorEnvironment* environment)
+{
+    m_injectedScriptObject = injectedScriptObject;
+    m_environment = environment;
+}
+
+bool InjectedScriptBase::hasAccessToInspectedScriptState() const
+{
+    return m_environment && m_environment->canAccessInspectedScriptState(m_injectedScriptObject.scriptState());
+}
+
+const Deprecated::ScriptObject& InjectedScriptBase::injectedScriptObject() const
+{
+    return m_injectedScriptObject;
+}
+
+Deprecated::ScriptValue InjectedScriptBase::callFunctionWithEvalEnabled(Deprecated::ScriptFunctionCall& function, bool& hadException) const
+{
+    if (m_environment)
+        m_environment->willCallInjectedScriptFunction(m_injectedScriptObject.scriptState(), name(), 1);
+
+    JSC::ExecState* scriptState = m_injectedScriptObject.scriptState();
+    bool evalIsDisabled = false;
+    if (scriptState) {
+        evalIsDisabled = !scriptState->lexicalGlobalObject()->evalEnabled();
+        // Temporarily enable allow evals for inspector.
+        if (evalIsDisabled)
+            scriptState->lexicalGlobalObject()->setEvalEnabled(true);
+    }
+
+    Deprecated::ScriptValue resultValue = function.call(hadException);
+
+    if (evalIsDisabled)
+        scriptState->lexicalGlobalObject()->setEvalEnabled(false);
+
+    if (m_environment)
+        m_environment->didCallInjectedScriptFunction(m_injectedScriptObject.scriptState());
+
+    return resultValue;
+}
+
+void InjectedScriptBase::makeCall(Deprecated::ScriptFunctionCall& function, RefPtr<InspectorValue>* result)
+{
+    if (hasNoValue() || !hasAccessToInspectedScriptState()) {
+        *result = InspectorValue::null();
+        return;
+    }
+
+    bool hadException = false;
+    Deprecated::ScriptValue resultValue = callFunctionWithEvalEnabled(function, hadException);
+
+    ASSERT(!hadException);
+    if (!hadException) {
+        *result = resultValue.toInspectorValue(m_injectedScriptObject.scriptState());
+        if (!*result)
+            *result = InspectorString::create(String::format("Object has too long reference chain (must not be longer than %d)", InspectorValue::maxDepth));
+    } else
+        *result = InspectorString::create("Exception while making a call.");
+}
+
+void InjectedScriptBase::makeEvalCall(ErrorString* errorString, Deprecated::ScriptFunctionCall& function, RefPtr<TypeBuilder::Runtime::RemoteObject>* objectResult, TypeBuilder::OptOutput<bool>* wasThrown)
+{
+    RefPtr<InspectorValue> result;
+    makeCall(function, &result);
+    if (!result) {
+        *errorString = ASCIILiteral("Internal error: result value is empty");
+        return;
+    }
+
+    if (result->type() == InspectorValue::TypeString) {
+        result->asString(errorString);
+        ASSERT(errorString->length());
+        return;
+    }
+
+    RefPtr<InspectorObject> resultPair = result->asObject();
+    if (!resultPair) {
+        *errorString = ASCIILiteral("Internal error: result is not an Object");
+        return;
+    }
+
+    RefPtr<InspectorObject> resultObj = resultPair->getObject(ASCIILiteral("result"));
+    bool wasThrownVal = false;
+    if (!resultObj || !resultPair->getBoolean(ASCIILiteral("wasThrown"), &wasThrownVal)) {
+        *errorString = ASCIILiteral("Internal error: result is not a pair of value and wasThrown flag");
+        return;
+    }
+
+    *objectResult = TypeBuilder::Runtime::RemoteObject::runtimeCast(resultObj);
+    *wasThrown = wasThrownVal;
+}
+
+} // namespace Inspector
+
+#endif // ENABLE(INSPECTOR)