CDB: Pass settings maxStringLength and maxStackDepth to extension.

Change-Id: I602aa3758817026c8b4cbda1cc9fa9eff95fc691
Reviewed-by: hjk <hjk121@nokiamail.com>

src/libs/qtcreatorcdbext/extensioncontext.cpp

@@ -43,6 +43,16 @@ WINDBG_EXTENSION_APIS   ExtensionApis = {sizeof(WINDBG_EXTENSION_APIS), 0, 0, 0,
 const char *ExtensionContext::stopReasonKeyC = "reason";
 const char *ExtensionContext::breakPointStopReasonC = "breakpoint";
 
+/*!  \class Parameters
+
+    Externally configureable parameters.
+    \ingroup qtcreatorcdbext
+*/
+
+Parameters::Parameters() : maxStringLength(10000), maxStackDepth(1000)
+{
+}
+
 /*!  \class ExtensionContext
 
     Global singleton with context.

src/libs/qtcreatorcdbext/extensioncontext.h

@@ -40,6 +40,16 @@ class LocalsSymbolGroup;
 class WatchesSymbolGroup;
 class OutputCallback;
 
+// Global parameters
+class Parameters
+{
+public:
+    Parameters();
+
+    unsigned maxStringLength;
+    unsigned maxStackDepth;
+};
+
 // Global singleton with context.
 // Caches a symbolgroup per frame and thread as long as the session is accessible.
 class ExtensionContext {
@@ -105,6 +115,9 @@ public:
 
     CIDebugClient *hookedClient() const { return m_hookedClient; }
 
+    const Parameters &parameters() const { return m_parameters; }
+    Parameters &parameters() { return m_parameters; }
+
 private:
     bool isInitialized() const;
 
@@ -120,6 +133,7 @@ private:
 
     StopReasonMap m_stopReason;
     bool m_stateNotification;
+    Parameters m_parameters;
 };
 
 // Context for extension commands to be instantiated on stack in a command handler.

src/libs/qtcreatorcdbext/qtcreatorcdbext.def

@@ -14,6 +14,7 @@ threads
 registers
 modules
 idle
+setparameter
 help
 memory
 expression

src/libs/qtcreatorcdbext/qtcreatorcdbextension.cpp

@@ -110,7 +110,8 @@ enum Command {
     CmdAddWatch,
     CmdWidgetAt,
     CmdBreakPoints,
-    CmdTest
+    CmdTest,
+    CmdSetParameter
 };
 
 static const CommandDescription commandDescriptions[] = {
@@ -172,7 +173,8 @@ static const CommandDescription commandDescriptions[] = {
 {"addwatch","Add watch expression","<iname> <expression>"},
 {"widgetat","Return address of widget at position","<x> <y>"},
 {"breakpoints","List breakpoints with modules","[-h] [-v]"},
-{"test","Testing command","-T type | -w watch-expression"}
+{"test","Testing command","-T type | -w watch-expression"},
+{"setparameter","Set parameter","maxStringLength=value maxStackDepth=value"}
 };
 
 typedef std::vector<std::string> StringVector;
@@ -893,6 +895,34 @@ extern "C" HRESULT CALLBACK idle(CIDebugClient *client, PCSTR)
     return S_OK;
 }
 
+// Extension command 'setparameter':
+// Parse a list of parameters: 'key=value'
+
+extern "C" HRESULT CALLBACK setparameter(CIDebugClient *, PCSTR args)
+{
+    int token;
+    StringVector tokens = commandTokens<StringVector>(args, &token);
+    const size_t count = tokens.size();
+    size_t success = 0;
+    for (size_t i = 0; i < count; ++i) {
+        const std::string &token = tokens.at(i);
+        const std::string::size_type equalsPos = token.find('=');
+        if (equalsPos != std::string::npos) {
+            const std::string value = token.substr(equalsPos + 1, token.size() - 1 - equalsPos);
+            if (!token.compare(0, equalsPos, "maxStringLength")) {
+                if (integerFromString(value, &ExtensionContext::instance().parameters().maxStringLength))
+                    ++success;
+            } else if (!token.compare(0, equalsPos, "maxStackDepth")) {
+                if (integerFromString(value, &ExtensionContext::instance().parameters().maxStackDepth))
+                    ++success;
+            }
+        }
+    }
+    if (success != count)
+        DebugPrint() << "Errors parsing setparameters command '" << args << '\'';
+    return S_OK;
+}
+
 // Extension command 'help':
 // Display version
 

src/plugins/debugger/cdb/cdbengine.cpp

@@ -783,6 +783,11 @@ void CdbEngine::setupInferior()
     }
     postCommand("sxn 0x4000001f", 0); // Do not break on WowX86 exceptions.
     postCommand(".asm source_line", 0); // Source line in assembly
+    postCommand(m_extensionCommandPrefixBA + "setparameter maxStringLength="
+                + debuggerCore()->action(MaximalStringLength)->value().toByteArray()
+                + " maxStackDepth="
+                + debuggerCore()->action(MaximalStackDepth)->value().toByteArray()
+                , 0);
     postExtensionCommand("pid", QByteArray(), 0, &CdbEngine::handlePid);
 }