From feab8604c927c28a78fc1efb8a15328c5acb8371 Mon Sep 17 00:00:00 2001
From: Rene Gollent <rene@gollent.com>
Date: Tue, 28 Oct 2014 22:47:28 -0400
Subject: [PATCH] Debugger: Add job for expression evaluation.

---
 .../debugger/jobs/ExpressionEvaluationJob.cpp | 64 +++++++++++++++++++
 src/apps/debugger/jobs/Jobs.h                 | 28 +++++++-
 2 files changed, 91 insertions(+), 1 deletion(-)
 create mode 100644 src/apps/debugger/jobs/ExpressionEvaluationJob.cpp

diff --git a/src/apps/debugger/jobs/ExpressionEvaluationJob.cpp b/src/apps/debugger/jobs/ExpressionEvaluationJob.cpp
new file mode 100644
index 0000000000..ea42f19a6c
--- /dev/null
+++ b/src/apps/debugger/jobs/ExpressionEvaluationJob.cpp
@@ -0,0 +1,64 @@
+/*
+ * Copyright 2014, Rene Gollent, rene@gollent.com.
+ * Distributed under the terms of the MIT License.
+ */
+
+#include "Jobs.h"
+
+#include <String.h>
+
+#include <AutoLocker.h>
+
+#include "SourceLanguage.h"
+#include "StackFrame.h"
+#include "Team.h"
+#include "Value.h"
+
+
+ExpressionEvaluationJob::ExpressionEvaluationJob(Team* team,
+	SourceLanguage* language, const char* expression, type_code resultType,
+	StackFrame* frame)
+	:
+	fKey(expression, JOB_TYPE_EVALUATE_EXPRESSION),
+	fTeam(team),
+	fLanguage(language),
+	fExpression(expression),
+	fResultType(resultType),
+	fFrame(frame)
+{
+	fLanguage->AcquireReference();
+	if (fFrame != NULL)
+		fFrame->AcquireReference();
+}
+
+
+ExpressionEvaluationJob::~ExpressionEvaluationJob()
+{
+	fLanguage->ReleaseReference();
+	if (fFrame != NULL)
+		fFrame->ReleaseReference();
+}
+
+
+const JobKey&
+ExpressionEvaluationJob::Key() const
+{
+	return fKey;
+}
+
+
+status_t
+ExpressionEvaluationJob::Do()
+{
+	Value* value = NULL;
+	status_t result = fLanguage->EvaluateExpression(fExpression, fResultType,
+		value);
+	BReference<Value> reference;
+	if (value != NULL)
+		reference.SetTo(value, true);
+
+	AutoLocker<Team> teamLocker(fTeam);
+	fTeam->NotifyExpressionEvaluated(fExpression.String(), result, value);
+
+	return B_OK;
+}
diff --git a/src/apps/debugger/jobs/Jobs.h b/src/apps/debugger/jobs/Jobs.h
index bc5df71558..7a01f870e0 100644
--- a/src/apps/debugger/jobs/Jobs.h
+++ b/src/apps/debugger/jobs/Jobs.h
@@ -6,6 +6,7 @@
 #ifndef JOBS_H
 #define JOBS_H
 
+#include <String.h>
 
 #include "ImageDebugInfoLoadingState.h"
 #include "ImageDebugInfoProvider.h"
@@ -20,6 +21,7 @@ class DebuggerInterface;
 class Function;
 class FunctionInstance;
 class Image;
+class SourceLanguage;
 class StackFrame;
 class StackFrameValues;
 class Team;
@@ -29,6 +31,7 @@ class TeamTypeInformation;
 class Thread;
 class Type;
 class TypeComponentPath;
+class Value;
 class ValueLocation;
 class ValueNode;
 class ValueNodeChild;
@@ -45,7 +48,8 @@ enum {
 	JOB_TYPE_LOAD_SOURCE_CODE,
 	JOB_TYPE_GET_STACK_FRAME_VALUE,
 	JOB_TYPE_RESOLVE_VALUE_NODE_VALUE,
-	JOB_TYPE_GET_MEMORY_BLOCK
+	JOB_TYPE_GET_MEMORY_BLOCK,
+	JOB_TYPE_EVALUATE_EXPRESSION
 };
 
 
@@ -226,4 +230,26 @@ private:
 };
 
 
+class ExpressionEvaluationJob : public Job {
+public:
+								ExpressionEvaluationJob(Team* team,
+									SourceLanguage* language,
+									const char* expression,
+									type_code resultType,
+									StackFrame* frame);
+	virtual						~ExpressionEvaluationJob();
+
+	virtual	const JobKey&		Key() const;
+	virtual	status_t			Do();
+
+private:
+			SimpleJobKey		fKey;
+			Team*				fTeam;
+			SourceLanguage*		fLanguage;
+			BString				fExpression;
+			type_code			fResultType;
+			StackFrame*			fFrame;
+};
+
+
 #endif	// JOBS_H