Wire up the Inspector V8 Debugger

sky/engine/core/inspector/InjectedScriptBase.cpp

+/*
+ * 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 "core/inspector/InjectedScriptBase.h"
+
+#include "bindings/core/v8/ScriptFunctionCall.h"
+#include "core/inspector/InspectorTraceEvents.h"
+#include "platform/JSONValues.h"
+#include "wtf/text/WTFString.h"
+
+using blink::TypeBuilder::Array;
+using blink::TypeBuilder::Runtime::RemoteObject;
+
+namespace blink {
+
+static PassRefPtr<TypeBuilder::Debugger::ExceptionDetails> toExceptionDetails(PassRefPtr<JSONObject> object)
+{
+    String text;
+    if (!object->getString("text", &text))
+        return nullptr;
+
+    RefPtr<TypeBuilder::Debugger::ExceptionDetails> exceptionDetails = TypeBuilder::Debugger::ExceptionDetails::create().setText(text);
+    String url;
+    if (object->getString("url", &url))
+        exceptionDetails->setUrl(url);
+    int line = 0;
+    if (object->getNumber("line", &line))
+        exceptionDetails->setLine(line);
+    int column = 0;
+    if (object->getNumber("column", &column))
+        exceptionDetails->setColumn(column);
+    RefPtr<JSONArray> stackTrace = object->getArray("stackTrace");
+    if (stackTrace && stackTrace->length() > 0) {
+        RefPtr<TypeBuilder::Array<TypeBuilder::Console::CallFrame> > frames = TypeBuilder::Array<TypeBuilder::Console::CallFrame>::create();
+        for (unsigned i = 0; i < stackTrace->length(); ++i) {
+            RefPtr<JSONObject> stackFrame = stackTrace->get(i)->asObject();
+            int lineNumber = 0;
+            stackFrame->getNumber("lineNumber", &lineNumber);
+            int column = 0;
+            stackFrame->getNumber("column", &column);
+            int scriptId = 0;
+            stackFrame->getNumber("scriptId", &scriptId);
+            String sourceURL;
+            stackFrame->getString("scriptNameOrSourceURL", &sourceURL);
+            String functionName;
+            stackFrame->getString("functionName", &functionName);
+
+            RefPtr<TypeBuilder::Console::CallFrame> callFrame = TypeBuilder::Console::CallFrame::create()
+                .setFunctionName(functionName)
+                .setScriptId(String::number(scriptId))
+                .setUrl(sourceURL)
+                .setLineNumber(lineNumber)
+                .setColumnNumber(column);
+
+            frames->addItem(callFrame.release());
+        }
+        exceptionDetails->setStackTrace(frames.release());
+    }
+    return exceptionDetails.release();
+}
+
+InjectedScriptBase::InjectedScriptBase(const String& name)
+    : m_name(name)
+{
+}
+
+InjectedScriptBase::InjectedScriptBase(const String& name, ScriptValue injectedScriptObject)
+    : m_name(name)
+    , m_injectedScriptObject(injectedScriptObject)
+{
+}
+
+void InjectedScriptBase::initialize(ScriptValue injectedScriptObject)
+{
+    m_injectedScriptObject = injectedScriptObject;
+}
+
+const ScriptValue& InjectedScriptBase::injectedScriptObject() const
+{
+    return m_injectedScriptObject;
+}
+
+ScriptValue InjectedScriptBase::callFunctionWithEvalEnabled(ScriptFunctionCall& function, bool& hadException) const
+{
+    ASSERT(!isEmpty());
+    ExecutionContext* executionContext = m_injectedScriptObject.scriptState()->executionContext();
+    TRACE_EVENT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline"), "FunctionCall", "data", InspectorFunctionCallEvent::data(executionContext, 0, name(), 1));
+    TRACE_EVENT_INSTANT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline.stack"), "CallStack", TRACE_EVENT_SCOPE_PROCESS, "stack", InspectorCallStackEvent::currentCallStack());
+
+    ScriptState* scriptState = m_injectedScriptObject.scriptState();
+    bool evalIsDisabled = false;
+    if (scriptState) {
+        evalIsDisabled = !scriptState->evalEnabled();
+        // Temporarily enable allow evals for inspector.
+        if (evalIsDisabled)
+            scriptState->setEvalEnabled(true);
+    }
+
+    ScriptValue resultValue = function.call(hadException);
+
+    if (evalIsDisabled)
+        scriptState->setEvalEnabled(false);
+
+    TRACE_EVENT_INSTANT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline"), "UpdateCounters", TRACE_EVENT_SCOPE_PROCESS, "data", InspectorUpdateCountersEvent::data());
+    return resultValue;
+}
+
+void InjectedScriptBase::makeCall(ScriptFunctionCall& function, RefPtr<JSONValue>* result)
+{
+    if (isEmpty()) {
+        *result = JSONValue::null();
+        return;
+    }
+
+    bool hadException = false;
+    ScriptValue resultValue = callFunctionWithEvalEnabled(function, hadException);
+
+    ASSERT(!hadException);
+    if (!hadException) {
+        *result = resultValue.toJSONValue(m_injectedScriptObject.scriptState());
+        if (!*result)
+            *result = JSONString::create(String::format("Object has too long reference chain(must not be longer than %d)", JSONValue::maxDepth));
+    } else {
+        *result = JSONString::create("Exception while making a call.");
+    }
+}
+
+void InjectedScriptBase::makeEvalCall(ErrorString* errorString, ScriptFunctionCall& function, RefPtr<TypeBuilder::Runtime::RemoteObject>* objectResult, TypeBuilder::OptOutput<bool>* wasThrown, RefPtr<TypeBuilder::Debugger::ExceptionDetails>* exceptionDetails)
+{
+    RefPtr<JSONValue> result;
+    makeCall(function, &result);
+    if (!result) {
+        *errorString = "Internal error: result value is empty";
+        return;
+    }
+    if (result->type() == JSONValue::TypeString) {
+        result->asString(errorString);
+        ASSERT(errorString->length());
+        return;
+    }
+    RefPtr<JSONObject> resultPair = result->asObject();
+    if (!resultPair) {
+        *errorString = "Internal error: result is not an Object";
+        return;
+    }
+    RefPtr<JSONObject> resultObj = resultPair->getObject("result");
+    bool wasThrownVal = false;
+    if (!resultObj || !resultPair->getBoolean("wasThrown", &wasThrownVal)) {
+        *errorString = "Internal error: result is not a pair of value and wasThrown flag";
+        return;
+    }
+    if (wasThrownVal) {
+        RefPtr<JSONObject> objectExceptionDetails = resultPair->getObject("exceptionDetails");
+        if (objectExceptionDetails)
+            *exceptionDetails = toExceptionDetails(objectExceptionDetails.release());
+    }
+    *objectResult = TypeBuilder::Runtime::RemoteObject::runtimeCast(resultObj);
+    *wasThrown = wasThrownVal;
+}
+
+} // namespace blink
+