Make pool allocations more explicit

This removes the ability for some classes to be implicitly allocated
using the pool allocator. Now NewPoolObject should be used to explicitly
allocate any object using the pool allocator.

Some other things this change does:
- Remove some of the NewPool* non-generic functions,
  replacing them with a single "make_unique" style function.
- Existing pointers allocated with the standard allocator are replaced
  with smart pointers.

Related to #3123.

glslang/HLSL/hlslGrammar.cpp

@@ -97,7 +97,7 @@ bool HlslGrammar::acceptIdentifier(HlslToken& idToken)
         idToken = token;
         advanceToken();
         idToken.tokenClass = EHTokIdentifier;
-        idToken.string = NewPoolTString(intermediate.implicitThisName);
+        idToken.string = NewPoolObject<TString>(intermediate.implicitThisName);
         return true;
     }
 
@@ -112,7 +112,7 @@ bool HlslGrammar::acceptIdentifier(HlslToken& idToken)
     if (idString == nullptr)
         return false;
 
-    token.string     = NewPoolTString(idString);
+    token.string     = NewPoolObject<TString>(idString);
     token.tokenClass = EHTokIdentifier;
     idToken = token;
     typeIdentifiers = true;
@@ -414,7 +414,7 @@ bool HlslGrammar::acceptDeclaration(TIntermNode*& nodeList)
             parseContext.renameShaderFunction(fullName);
 
             // function_parameters
-            declarator.function = new TFunction(fullName, declaredType);
+            declarator.function = NewPoolObject<TFunction>(fullName, declaredType);
             if (!acceptFunctionParameters(*declarator.function)) {
                 expected("function parameter list");
                 return false;
@@ -1087,7 +1087,7 @@ bool HlslGrammar::acceptTessellationPatchTemplateType(TType& type)
     if (! acceptLiteral(size))
         return false;
 
-    TArraySizes* arraySizes = new TArraySizes;
+    TArraySizes* arraySizes = NewPoolObject<TArraySizes>();
     arraySizes->addInnerSize(size->getAsConstantUnion()->getConstArray()[0].getIConst());
     type.transferArraySizes(arraySizes);
     type.getQualifier().builtIn = patchType;
@@ -2618,7 +2618,7 @@ bool HlslGrammar::acceptStructBufferType(TType& type)
     advanceToken();  // consume the structure keyword
 
     // type on which this StructedBuffer is templatized.  E.g, StructedBuffer<MyStruct> ==> MyStruct
-    TType* templateType = new TType;
+    TType* templateType = NewPoolObject<TType>();
 
     if (hasTemplateType) {
         if (! acceptTokenClass(EHTokLeftAngle)) {
@@ -2642,15 +2642,15 @@ bool HlslGrammar::acceptStructBufferType(TType& type)
 
     // Create an unsized array out of that type.
     // TODO: does this work if it's already an array type?
-    TArraySizes* unsizedArray = new TArraySizes;
+    TArraySizes* unsizedArray = NewPoolObject<TArraySizes>();
     unsizedArray->addInnerSize(UnsizedArraySize);
     templateType->transferArraySizes(unsizedArray);
     templateType->getQualifier().storage = storage;
 
     // field name is canonical for all structbuffers
     templateType->setFieldName("@data");
 
-    TTypeList* blockStruct = new TTypeList;
+    TTypeList* blockStruct = NewPoolObject<TTypeList>();
     TTypeLoc  member = { templateType, token.loc };
     blockStruct->push_back(member);
 
@@ -2685,7 +2685,7 @@ bool HlslGrammar::acceptStructBufferType(TType& type)
 bool HlslGrammar::acceptStructDeclarationList(TTypeList*& typeList, TIntermNode*& nodeList,
                                               TVector<TFunctionDeclarator>& declarators)
 {
-    typeList = new TTypeList();
+    typeList = NewPoolObject<TTypeList>();
     HlslToken idToken;
 
     do {
@@ -2733,7 +2733,7 @@ bool HlslGrammar::acceptStructDeclarationList(TTypeList*& typeList, TIntermNode*
                 return false;
             } else {
                 // add it to the list of members
-                TTypeLoc member = { new TType(EbtVoid), token.loc };
+                TTypeLoc member = { NewPoolObject<TType>(EbtVoid), token.loc };
                 member.type->shallowCopy(memberType);
                 member.type->setFieldName(*idToken.string);
                 typeList->push_back(member);
@@ -2793,7 +2793,7 @@ bool HlslGrammar::acceptMemberFunctionDefinition(TIntermNode*& nodeList, const T
 
     TString* functionName = &memberName;
     parseContext.getFullNamespaceName(functionName);
-    declarator.function = new TFunction(functionName, type);
+    declarator.function = NewPoolObject<TFunction>(functionName, type);
     if (type.getQualifier().storage == EvqTemporary)
         declarator.function->setImplicitThis();
     else
@@ -2807,7 +2807,7 @@ bool HlslGrammar::acceptMemberFunctionDefinition(TIntermNode*& nodeList, const T
         // compound_statement (function body definition)
         if (peekTokenClass(EHTokLeftBrace)) {
             declarator.loc = token.loc;
-            declarator.body = new TVector<HlslToken>;
+            declarator.body = NewPoolObject<TVector<HlslToken>>();
             accepted = acceptFunctionDefinition(declarator, nodeList, declarator.body);
         }
     } else
@@ -2912,7 +2912,7 @@ bool HlslGrammar::acceptParameterDeclaration(TFunction& function)
     acceptAttributes(attributes);
 
     // fully_specified_type
-    TType* type = new TType;
+    TType* type = NewPoolObject<TType>();
     if (! acceptFullySpecifiedType(*type, attributes))
         return false;
 
@@ -3409,7 +3409,7 @@ bool HlslGrammar::acceptPostfixExpression(TIntermTyped*& node)
         TString* fullName = idToken.string;
         while (acceptTokenClass(EHTokColonColon)) {
             // user-type or namespace name
-            fullName = NewPoolTString(fullName->c_str());
+            fullName = NewPoolObject<TString>(fullName->c_str());
             fullName->append(parseContext.scopeMangler);
             if (acceptIdentifier(idToken))
                 fullName->append(*idToken.string);
@@ -3557,21 +3557,21 @@ bool HlslGrammar::acceptFunctionCall(const TSourceLoc& loc, TString& name, TInte
     } else if (parseContext.isBuiltInMethod(loc, baseObject, name)) {
         // Built-in methods are not in the symbol table as methods, but as global functions
         // taking an explicit 'this' as the first argument.
-        functionName = NewPoolTString(BUILTIN_PREFIX);
+        functionName = NewPoolObject<TString>(BUILTIN_PREFIX);
         functionName->append(name);
     } else {
         if (! baseObject->getType().isStruct()) {
             expected("structure");
             return false;
         }
-        functionName = NewPoolTString("");
+        functionName = NewPoolObject<TString>("");
         functionName->append(baseObject->getType().getTypeName());
         parseContext.addScopeMangler(*functionName);
         functionName->append(name);
     }
 
     // function
-    TFunction* function = new TFunction(functionName, TType(EbtVoid));
+    TFunction* function = NewPoolObject<TFunction>(functionName, TType(EbtVoid));
 
     // arguments
     TIntermTyped* arguments = nullptr;
@@ -3874,7 +3874,7 @@ void HlslGrammar::acceptAttributes(TAttributes& attributes)
 
         // (x, ...)
         if (acceptTokenClass(EHTokLeftParen)) {
-            expressions = new TIntermAggregate;
+            expressions = NewPoolObject<TIntermAggregate>();
 
             TIntermTyped* node;
             bool expectingExpression = false;
@@ -3993,7 +3993,7 @@ bool HlslGrammar::acceptSwitchStatement(TIntermNode*& statement, const TAttribut
     }
 
     // compound_statement
-    parseContext.pushSwitchSequence(new TIntermSequence);
+    parseContext.pushSwitchSequence(NewPoolObject<TIntermSequence>());
 
     ++parseContext.controlFlowNestingLevel;
     bool statementOkay = acceptCompoundStatement(statement);
@@ -4268,7 +4268,7 @@ void HlslGrammar::acceptArraySpecifier(TArraySizes*& arraySizes)
         return;
 
     // If we get here, we have at least one array dimension.  This will track the sizes we find.
-    arraySizes = new TArraySizes;
+    arraySizes = NewPoolObject<TArraySizes>();
 
     // Collect each array dimension.
     while (acceptTokenClass(EHTokLeftBracket)) {