Add some missing 'const' and texture-op guards, for future change to enum-based textu...

The infrastructure is in place to not do text comparisons for "texture" ... for deducing type of
texture call.  But, it is not yet turned on, as it could break some consumers.  Am soliciting
any feedback on that.

See in Initialize.cpp: const bool PureOperatorBuiltins = false;  // could break backward compatibility; pending feedback

diff --git a/glslang/Include/intermediate.h b/glslang/Include/intermediate.h
index cf24e01..2232c01 100644 (file)
--- a/glslang/Include/intermediate.h
+++ b/glslang/Include/intermediate.h
@@ -353,6 +353,7 @@ enum TOperator {
     // Texture operations
     //
 
+    ETextureGuardBegin,
     ETextureQuerySize,
     ETextureQueryLod,
     ETextureQueryLevels,
@@ -374,6 +375,7 @@ enum TOperator {
     ETextureGather,
     ETextureGatherOffset,
     ETextureGatherOffsets,
+    ETextureGuardEnd,
 };
 
 class TIntermTraverser;
@@ -484,10 +486,10 @@ public:
         terminal(aTerminal),
         first(testFirst) { }
     virtual void traverse(TIntermTraverser*);
-    TIntermNode*  getBody() { return body; }
-    TIntermTyped* getTest() { return test; }
-    TIntermTyped* getTerminal() { return terminal; }
-    bool testFirst() { return first; }
+    TIntermNode*  getBody() const { return body; }
+    TIntermTyped* getTest() const { return test; }
+    TIntermTyped* getTerminal() const { return terminal; }
+    bool testFirst() const { return first; }
 protected:
     TIntermNode* body;       // code to loop over
     TIntermTyped* test;      // exit condition associated with loop, could be 0 for 'for' loops
@@ -506,8 +508,8 @@ public:
     virtual       TIntermBranch* getAsBranchNode()       { return this; }
     virtual const TIntermBranch* getAsBranchNode() const { return this; }
     virtual void traverse(TIntermTraverser*);
-    TOperator getFlowOp() { return flowOp; }
-    TIntermTyped* getExpression() { return expression; }
+    TOperator getFlowOp() const { return flowOp; }
+    TIntermTyped* getExpression() const { return expression; }
 protected:
     TOperator flowOp;
     TIntermTyped* expression;
@@ -578,7 +580,7 @@ class TIntermOperator : public TIntermTyped {
 public:
     virtual       TIntermOperator* getAsOperator()       { return this; }
     virtual const TIntermOperator* getAsOperator() const { return this; }
-    TOperator getOp() { return op; }
+    TOperator getOp() const { return op; }
     bool modifiesState() const;
     bool isConstructor() const;
     virtual bool promote() { return true; }
@@ -650,8 +652,8 @@ public:
     virtual const TQualifierList& getQualifierList() const { return qualifier; }
     void setOptimize(bool o) { optimize = o; }
     void setDebug(bool d) { debug = d; }
-    bool getOptimize() { return optimize; }
-    bool getDebug() { return debug; }
+    bool getOptimize() const { return optimize; }
+    bool getDebug() const { return debug; }
     void addToPragmaTable(const TPragmaTable& pTable);
     const TPragmaTable& getPragmaTable() const { return *pragmaTable; }
 protected: