Change ValueObject::IsLogicalTrue so that it starts by asking the applicable Language plugin before using the C-style rule

llvm-svn: 251838

lldb/include/lldb/Target/Language.h

@@ -119,6 +119,10 @@ public:
     virtual DumpValueObjectOptions::DeclPrintingHelper
     GetDeclPrintingHelper ();
     
+    virtual LazyBool
+    IsLogicalTrue (ValueObject& valobj,
+                   Error& error);
+    
     // These are accessors for general information about the Languages lldb knows about:
     
     static lldb::LanguageType

lldb/source/Core/ValueObject.cpp

@@ -47,6 +47,7 @@
 #include "lldb/Symbol/Type.h"
 
 #include "lldb/Target/ExecutionContext.h"
+#include "lldb/Target/Language.h"
 #include "lldb/Target/LanguageRuntime.h"
 #include "lldb/Target/ObjCLanguageRuntime.h"
 #include "lldb/Target/Process.h"
@@ -515,6 +516,20 @@ ValueObject::ResolveValue (Scalar &scalar)
 bool
 ValueObject::IsLogicalTrue (Error& error)
 {
+    if (Language *language = Language::FindPlugin(GetObjectRuntimeLanguage()))
+    {
+        LazyBool is_logical_true = language->IsLogicalTrue(*this, error);
+        switch (is_logical_true)
+        {
+            case eLazyBoolYes:
+            case eLazyBoolNo:
+                return (is_logical_true == true);
+            case eLazyBoolCalculate:
+            default:
+                break;
+        }
+    }
+    
     Scalar scalar_value;
     
     if (!ResolveValue (scalar_value))

lldb/source/Target/Language.cpp

@@ -351,6 +351,13 @@ Language::GetDeclPrintingHelper ()
     return nullptr;
 }
 
+LazyBool
+Language::IsLogicalTrue (ValueObject& valobj,
+                         Error& error)
+{
+    return eLazyBoolCalculate;
+}
+
 //----------------------------------------------------------------------
 // Constructor
 //----------------------------------------------------------------------