namespace GL {
namespace SL {
+/** Base class for validators. Contains some utilities for adding diagnostic
+messages. */
class Validator: protected TraversingVisitor
{
protected:
- Stage *stage;
+ Stage *stage = 0;
+ Node *last_provoker = 0;
- Validator();
+ Validator() = default;
- void diagnose(Node &, Diagnostic::Severity, const std::string &);
+ 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 &);
};
+/** Verifies that declarations are valid in isolation. */
class DeclarationValidator: private Validator
{
+private:
+ enum ScopeType
+ {
+ GLOBAL,
+ STRUCT,
+ INTERFACE_BLOCK,
+ FUNCTION_PARAM,
+ FUNCTION
+ };
+
+ Features features;
+ ScopeType scope = GLOBAL;
+ InterfaceLayout *iface_layout = 0;
+ VariableDeclaration *iface_block = 0;
+ VariableDeclaration *variable = 0;
+ bool have_input_primitive = false;
+ bool have_output_primitive = false;
+ bool have_output_vertex_count = false;
+ bool have_workgroup_size = false;
+
+public:
+ void apply(Stage &, const Features &);
+
+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(FunctionDeclaration &);
+};
+
+/** Verifies that identifiers are unique or, in the case of functions, are
+overloaded only in valid ways. */
+class IdentifierValidator: private Validator
+{
private:
typedef std::map<std::string, Statement *> BlockDeclarationMap;
std::map<Block *, BlockDeclarationMap> declarations;
- std::map<std::string, InterfaceBlock *> interface_blocks;
- bool anonymous_block;
+ std::map<std::string, VariableDeclaration *> interface_blocks;
+ std::map<std::string, FunctionDeclaration *> overloaded_functions;
+ bool anonymous_block = false;
public:
- DeclarationValidator();
-
void apply(Stage &s) { stage = &s; s.content.visit(*this); }
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 &);
};
+/** Verifies that there are no unresolved references. */
+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(FunctionCall &);
+ virtual void visit(VariableDeclaration &);
+ virtual void visit(FunctionDeclaration &);
+};
+
+/** Verifies that expressions are valid. In most cases an invalid expression
+is indicated by a null result type. */
+class ExpressionValidator: private Validator
+{
+private:
+ enum ConstantKind
+ {
+ NOT_CONSTANT,
+ FIXED_CONSTANT,
+ SPEC_CONSTANT
+ };
+
+ FunctionDeclaration *current_function = 0;
+ bool in_struct = false;
+ ConstantKind constant_expression = NOT_CONSTANT;
+
+public:
+ void apply(Stage &s) { stage = &s; s.content.visit(*this); }
+
+private:
+ virtual void visit(VariableReference &);
+ virtual void visit(Swizzle &);
+ virtual void visit(UnaryExpression &);
+ virtual void visit(BinaryExpression &);
+ virtual void visit(Assignment &);
+ virtual void visit(TernaryExpression &);
+ virtual void visit(StructDeclaration &);
+ virtual void visit(VariableDeclaration &);
+ virtual void visit(FunctionDeclaration &);
+ virtual void visit(Conditional &);
+ virtual void visit(Iteration &);
+ virtual void visit(Return &);
+};
+
+/** Verifies flow control constructs. Functions returning non-void must have
+return statements. Warnings are given about dead code. */
+class FlowControlValidator: private Validator
+{
+private:
+ bool reachable = true;
+
+public:
+ void apply(Stage &s) { stage = &s; s.content.visit(*this); }
+
+private:
+ virtual void visit(Block &);
+ virtual void visit(FunctionDeclaration &);
+ virtual void visit(Conditional &);
+ virtual void visit(Iteration &);
+ virtual void visit(Return &) { reachable = false; }
+ virtual void visit(Jump &) { reachable = false; }
+};
+
+/** Verifies that stage input and output interfaces are valid. Linked
+variables must have matching types and locations and there must not be any
+overlap in locations. */
+class StageInterfaceValidator: private Validator
+{
+private:
+ std::map<std::string, std::map<unsigned, VariableDeclaration *> > used_locations;
+
+public:
+ void apply(Stage &s) { stage = &s; s.content.visit(*this); }
+
+private:
+ virtual void visit(VariableDeclaration &);
+ virtual void visit(FunctionDeclaration &) { }
+};
+
+/** Verifies that uniform interfaces are valid across the entire module.
+Variables declared with the same binding must have the same name and type. */
+class GlobalInterfaceValidator: private Validator
+{
+private:
+ struct Uniform
+ {
+ Node *node = 0;
+ TypeDeclaration *type = 0;
+ std::string name;
+ int location = -1;
+ unsigned loc_count = 1;
+ int desc_set = 0;
+ int bind_point = -1;
+ };
+
+ std::list<Uniform> uniforms;
+ std::map<std::string, const Uniform *> used_names;
+ std::map<unsigned, const Uniform *> used_locations;
+ std::map<unsigned, std::map<unsigned, const Uniform *> > used_bindings;
+
+public:
+ void apply(Module &);
+
+private:
+ void check_uniform(const Uniform &);
+
+ virtual void visit(VariableDeclaration &);
+ virtual void visit(FunctionDeclaration &) { }
+};
+
} // namespace SL
} // namespace GL
} // namespace Msp
projects / libs / gl.git / blobdiff