Use default member initializers for simple types

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

diff --git a/source/glsl/reflect.h b/source/glsl/reflect.h
index 72a50c3eb6368b303ba5bd6e2fad8f7095e0189b..d48fbec156506f31fda79fd86aa676b8257a128d 100644 (file)
--- a/source/glsl/reflect.h
+++ b/source/glsl/reflect.h
@@ -7,15 +7,47 @@ namespace Msp {
 namespace GL {
 namespace SL {
 
+bool is_scalar(const BasicTypeDeclaration &);
+bool is_vector_or_matrix(const BasicTypeDeclaration &);
+BasicTypeDeclaration *get_element_type(BasicTypeDeclaration &);
+bool can_convert(const BasicTypeDeclaration &, const BasicTypeDeclaration &);
+
+/** Compares two types for equality.  Struct types are compared recursively. */
+class TypeComparer: private NodeVisitor
+{
+private:
+       Node *first = 0;
+       Node *second = 0;
+       unsigned first_tag = 0;
+       bool r_result = false;
+
+       static unsigned next_tag;
+
+public:
+       bool apply(TypeDeclaration &t1, TypeDeclaration &t2) { compare(t1, t2); return r_result; }
+
+private:
+       void compare(Node &, Node &);
+       template<typename T>
+       T *multi_visit(T &);
+       virtual void visit(Literal &);
+       virtual void visit(VariableReference &);
+       virtual void visit(UnaryExpression &);
+       virtual void visit(BinaryExpression &);
+       virtual void visit(TernaryExpression &);
+       virtual void visit(BasicTypeDeclaration &);
+       virtual void visit(ImageTypeDeclaration &);
+       virtual void visit(StructDeclaration &);
+       virtual void visit(VariableDeclaration &);
+};
+
 /** Determines the number of interface locations required by a variable. */
 class LocationCounter: private NodeVisitor
 {
 private:
-       unsigned r_count;
+       unsigned r_count = 0;
 
 public:
-       LocationCounter();
-
        unsigned apply(VariableDeclaration &v) { v.visit(*this); return r_count; }
 
 private:
@@ -25,6 +57,33 @@ private:
        virtual void visit(VariableDeclaration &);
 };
 
+/** Determines the size and alignment of a variable or a type, in bytes. */
+class MemoryRequirementsCalculator: private NodeVisitor
+{
+public:
+       struct Result
+       {
+               unsigned size;
+               unsigned alignment;
+               unsigned stride;
+
+               Result(unsigned s, unsigned a): size(s), alignment(a), stride(s+a-1-(s+a-1)%a) { }
+       };
+private:
+       unsigned r_size = 0;
+       unsigned r_alignment = 1;
+       int r_offset = -1;
+
+public:
+       Result apply(VariableDeclaration &v) { v.visit(*this); return Result(r_size, r_alignment); }
+       Result apply(TypeDeclaration &t) { t.visit(*this); return Result(r_size, r_alignment); }
+
+private:
+       virtual void visit(BasicTypeDeclaration &);
+       virtual void visit(StructDeclaration &);
+       virtual void visit(VariableDeclaration &);
+};
+
 /** Collects dependencies of a function.  This includes global variables,
 interface blocks, other functions and types. */
 class DependencyCollector: private TraversingVisitor
@@ -32,6 +91,7 @@ class DependencyCollector: private TraversingVisitor
 private:
        std::set<Node *> dependencies;
        std::set<Node *> locals;
+       std::set<FunctionDeclaration *> visited_functions;
 
 public:
        std::set<Node *> apply(FunctionDeclaration &);
@@ -41,6 +101,7 @@ private:
        virtual void visit(InterfaceBlockReference &);
        virtual void visit(FunctionCall &);
        virtual void visit(VariableDeclaration &);
+       virtual void visit(FunctionDeclaration &);
 };
 
 } // namespace SL