Add a bunch of validation for declarations in GLSL

[libs/gl.git] / source / glsl / validate.h

diff --git a/source/glsl/validate.h b/source/glsl/validate.h
index 42c74230c4f90637208b4fb9ca42388f82ad123b..f1e3f5126eb8422624524979a8768165b5451396 100644 (file)
--- a/source/glsl/validate.h
+++ b/source/glsl/validate.h
@@ -14,24 +14,63 @@ class Validator: protected TraversingVisitor
 {
 protected:
        Stage *stage;
+       Node *last_provoker;
 
        Validator();
 
-       void diagnose(Statement *, Diagnostic::Severity, const std::string &);
-       void error(Statement *s, const std::string &m) { diagnose(s, Diagnostic::ERR, m); }
+       void diagnose(Node &, Node &, Diagnostic::Severity, const std::string &);
+       void diagnose(Node &n, Diagnostic::Severity s, const std::string &m) { diagnose(n, n, s, m); }
+       void error(Node &n, const std::string &m) { diagnose(n, Diagnostic::ERR, m); }
+       void add_info(Node &, const std::string &);
 };
 
 class DeclarationValidator: private Validator
 {
+private:
+       enum ScopeType
+       {
+               GLOBAL,
+               STRUCT,
+               INTERFACE_BLOCK,
+               FUNCTION_PARAM,
+               FUNCTION
+       };
+
+       ScopeType scope;
+       InterfaceLayout *iface_layout;
+       InterfaceBlock *iface_block;
+       VariableDeclaration *variable;
+
+public:
+       DeclarationValidator();
+
+       void apply(Stage &s) { stage = &s; s.content.visit(*this); }
+
+private:
+       static const char *describe_variable(ScopeType);
+
+       virtual void visit(Layout &);
+       virtual void visit(InterfaceLayout &);
+       virtual void visit(BasicTypeDeclaration &);
+       virtual void visit(ImageTypeDeclaration &);
+       virtual void visit(StructDeclaration &);
+       virtual void visit(VariableDeclaration &);
+       virtual void visit(InterfaceBlock &);
+       virtual void visit(FunctionDeclaration &);
+};
+
+class IdentifierValidator: private Validator
+{
 private:
        typedef std::map<std::string, Statement *> BlockDeclarationMap;
 
        std::map<Block *, BlockDeclarationMap> declarations;
        std::map<std::string, InterfaceBlock *> interface_blocks;
+       std::map<std::string, FunctionDeclaration *> overloaded_functions;
        bool anonymous_block;
 
 public:
-       DeclarationValidator();
+       IdentifierValidator();
 
        void apply(Stage &s) { stage = &s; s.content.visit(*this); }
 
@@ -41,11 +80,53 @@ private:
        void check_definition(const std::string &, Statement &);
        void record_definition(const std::string &, Statement &);
 
+       virtual void visit(TypeDeclaration &);
+       virtual void visit(BasicTypeDeclaration &t) { visit(static_cast<TypeDeclaration &>(t)); }
+       virtual void visit(ImageTypeDeclaration &t) { visit(static_cast<TypeDeclaration &>(t)); }
+       virtual void visit(StructDeclaration &);
        virtual void visit(VariableDeclaration &);
        virtual void visit(InterfaceBlock &);
        virtual void visit(FunctionDeclaration &);
 };
 
+class ReferenceValidator: private Validator
+{
+public:
+       void apply(Stage &s) { stage = &s; s.content.visit(*this); }
+
+private:
+       virtual void visit(BasicTypeDeclaration &);
+       virtual void visit(ImageTypeDeclaration &);
+       virtual void visit(VariableReference &);
+       virtual void visit(MemberAccess &);
+       virtual void visit(InterfaceBlockReference &);
+       virtual void visit(FunctionCall &);
+       virtual void visit(VariableDeclaration &);
+       virtual void visit(InterfaceBlock &);
+       virtual void visit(FunctionDeclaration &);
+};
+
+class ExpressionValidator: private Validator
+{
+private:
+       FunctionDeclaration *current_function;
+
+public:
+       ExpressionValidator();
+
+       void apply(Stage &s) { stage = &s; s.content.visit(*this); }
+
+private:
+       virtual void visit(Swizzle &);
+       virtual void visit(UnaryExpression &);
+       virtual void visit(BinaryExpression &);
+       virtual void visit(Assignment &);
+       virtual void visit(TernaryExpression &);
+       virtual void visit(VariableDeclaration &);
+       virtual void visit(FunctionDeclaration &);
+       virtual void visit(Return &);
+};
+
 } // namespace SL
 } // namespace GL
 } // namespace Msp