Introduced a simple memory pool.

src/libs/glsl/glsl-lib.pri

 HEADERS += $$PWD/glsl.h $$PWD/glsllexer.h $$PWD/glslparser.h $$PWD/glslparsertable_p.h $$PWD/glslast.h \
-    $$PWD/glslastvisitor.h $$PWD/glslengine.h
+    $$PWD/glslastvisitor.h $$PWD/glslengine.h $$PWD/glslmemorypool.h
 SOURCES += $$PWD/glslkeywords.cpp $$PWD/glslparser.cpp $$PWD/glslparsertable.cpp \
     $$PWD/glsllexer.cpp $$PWD/glslast.cpp \
-    $$PWD/glslastvisitor.cpp $$PWD/glslengine.cpp
+    $$PWD/glslastvisitor.cpp $$PWD/glslengine.cpp $$PWD/glslmemorypool.cpp
 
 OTHER_FILES = $$PWD/glsl.g \
     $$PWD/specs/grammar.txt

src/libs/glsl/glsl.g

@@ -277,6 +277,7 @@ private:
     void reduce(int ruleno);
 
 private:
+    Engine *_engine;
     int _tos;
     int _index;
     std::vector<int> _stateStack;
@@ -319,6 +320,7 @@ private:
 **************************************************************************/
 
 #include "glslparser.h"
+#include "glslengine.h"
 #include <iostream>
 #include <cstdio>
 #include <cassert>
@@ -326,7 +328,7 @@ private:
 using namespace GLSL;
 
 Parser::Parser(Engine *engine, const char *source, unsigned size, int variant)
-    : _tos(-1), _index(0)
+    : _engine(engine), _tos(-1), _index(0)
 {
     _tokens.reserve(1024);
 
@@ -2602,14 +2604,14 @@ case $rule_number: {
 external_declaration_list ::= external_declaration ;
 /.
 case $rule_number: {
-    sym(1).declaration_list = new List<Declaration *>(sym(1).declaration);
+    sym(1).declaration_list = new (_engine->pool()) List<Declaration *>(sym(1).declaration);
 }   break;
 ./
 
 external_declaration_list ::= external_declaration_list external_declaration ;
 /.
 case $rule_number: {
-    sym(1).declaration_list = new List<Declaration *>(sym(1).declaration_list, sym(2).declaration);
+    sym(1).declaration_list = new (_engine->pool())  List<Declaration *>(sym(1).declaration_list, sym(2).declaration);
 }   break;
 ./
 

src/libs/glsl/glsl.h

@@ -46,6 +46,7 @@ namespace GLSL {
 class Engine;
 class Lexer;
 class Parser;
+class MemoryPool;
 class AST;
 template <typename T> class List;
 }

src/libs/glsl/glslast.h

@@ -30,6 +30,7 @@
 #define GLSLAST_H
 
 #include "glsl.h"
+#include "glslmemorypool.h"
 #include <vector>
 #include <string>
 
@@ -66,7 +67,7 @@ class StructType;
 class Visitor;
 
 template <typename T>
-class GLSL_EXPORT List
+class GLSL_EXPORT List: public Managed
 {
 public:
     List(const T &value)
@@ -90,7 +91,7 @@ public:
     List *next;
 };
 
-class GLSL_EXPORT AST
+class GLSL_EXPORT AST  // : public Managed
 {
 public:
     enum Kind {

src/libs/glsl/glslengine.cpp

@@ -19,3 +19,8 @@ const std::string *Engine::identifier(const char *s, int n)
 {
     return &*_identifiers.insert(std::string(s, n)).first;
 }
+
+MemoryPool *Engine::pool()
+{
+    return &_pool;
+}

src/libs/glsl/glslengine.h

@@ -2,6 +2,7 @@
 #define GLSLENGINE_H
 
 #include "glsl.h"
+#include "glslmemorypool.h"
 #include <set>
 #include <string>
 
@@ -16,8 +17,11 @@ public:
     const std::string *identifier(const std::string &s);
     const std::string *identifier(const char *s, int n);
 
+    MemoryPool *pool();
+
 private:
     std::set<std::string> _identifiers;
+    MemoryPool _pool;
 };
 
 } // namespace GLSL

src/libs/glsl/glslparser.h

@@ -68,6 +68,7 @@ private:
     void reduce(int ruleno);
 
 private:
+    Engine *_engine;
     int _tos;
     int _index;
     std::vector<int> _stateStack;