1 #ifndef MSP_GL_PROGRAMCOMPILER_H_
2 #define MSP_GL_PROGRAMCOMPILER_H_
5 #include "programparser.h"
6 #include "programsyntax.h"
17 struct Visitor: ProgramSyntax::TraversingVisitor
19 typedef void ResultType;
21 ProgramSyntax::Stage *stage;
25 virtual void apply(ProgramSyntax::Stage &);
26 void get_result() const { }
29 struct Formatter: Visitor
31 typedef std::string ResultType;
33 std::string formatted;
37 std::string block_interface;
41 virtual void apply(ProgramSyntax::Stage &);
42 const std::string &get_result() const { return formatted; }
43 virtual void visit(ProgramSyntax::Block &);
44 virtual void visit(ProgramSyntax::Literal &);
45 virtual void visit(ProgramSyntax::ParenthesizedExpression &);
46 virtual void visit(ProgramSyntax::VariableReference &);
47 virtual void visit(ProgramSyntax::MemberAccess &);
48 virtual void visit(ProgramSyntax::UnaryExpression &);
49 virtual void visit(ProgramSyntax::BinaryExpression &);
50 virtual void visit(ProgramSyntax::Assignment &);
51 virtual void visit(ProgramSyntax::FunctionCall &);
52 virtual void visit(ProgramSyntax::ExpressionStatement &);
53 virtual void visit(ProgramSyntax::Import &);
54 virtual void visit(ProgramSyntax::Layout &);
55 virtual void visit(ProgramSyntax::InterfaceLayout &);
56 virtual void visit(ProgramSyntax::StructDeclaration &);
57 virtual void visit(ProgramSyntax::VariableDeclaration &);
58 virtual void visit(ProgramSyntax::InterfaceBlock &);
59 virtual void visit(ProgramSyntax::FunctionDeclaration &);
60 virtual void visit(ProgramSyntax::Conditional &);
61 virtual void visit(ProgramSyntax::Iteration &);
62 virtual void visit(ProgramSyntax::Return &);
66 struct NodeGatherer: Visitor
68 typedef std::list<T *> ResultType;
72 const ResultType &get_result() const { return nodes; }
73 virtual void visit(T &n) { nodes.push_back(&n); }
76 struct DeclarationCombiner: Visitor
79 std::map<std::string, std::vector<ProgramSyntax::FunctionDeclaration *> > functions;
80 std::map<std::string, ProgramSyntax::VariableDeclaration *> variables;
83 DeclarationCombiner();
85 virtual void visit(ProgramSyntax::Block &);
86 virtual void visit(ProgramSyntax::FunctionDeclaration &);
87 virtual void visit(ProgramSyntax::VariableDeclaration &);
90 struct VariableResolver: Visitor
92 std::vector<ProgramSyntax::Block *> blocks;
93 ProgramSyntax::StructDeclaration *type;
95 std::string block_interface;
97 ProgramSyntax::VariableDeclaration *assignment_target;
98 bool self_referencing;
102 virtual void apply(ProgramSyntax::Stage &);
103 virtual void visit(ProgramSyntax::Block &);
104 virtual void visit(ProgramSyntax::VariableReference &);
105 virtual void visit(ProgramSyntax::MemberAccess &);
106 virtual void visit(ProgramSyntax::BinaryExpression &);
107 virtual void visit(ProgramSyntax::Assignment &);
108 virtual void visit(ProgramSyntax::StructDeclaration &);
109 virtual void visit(ProgramSyntax::VariableDeclaration &);
110 virtual void visit(ProgramSyntax::InterfaceBlock &);
113 struct FunctionResolver: Visitor
115 std::map<std::string, std::vector<ProgramSyntax::FunctionDeclaration *> > functions;
117 virtual void visit(ProgramSyntax::FunctionCall &);
118 virtual void visit(ProgramSyntax::FunctionDeclaration &);
121 struct BlockModifier: Visitor
124 std::list<RefPtr<ProgramSyntax::Node> > insert_nodes;
128 void flatten_block(ProgramSyntax::Block &);
129 void apply_and_increment(ProgramSyntax::Block &, std::list<RefPtr<ProgramSyntax::Node> >::iterator &);
130 virtual void visit(ProgramSyntax::Block &);
133 struct InterfaceGenerator: BlockModifier
135 std::string in_prefix;
136 std::string out_prefix;
137 unsigned scope_level;
138 std::map<std::string, RefPtr<ProgramSyntax::VariableDeclaration> > iface_declarations;
140 InterfaceGenerator();
142 static std::string get_out_prefix(ProgramSyntax::StageType);
143 virtual void apply(ProgramSyntax::Stage &);
144 virtual void visit(ProgramSyntax::Block &);
145 std::string change_prefix(const std::string &, const std::string &) const;
146 bool generate_interface(ProgramSyntax::VariableDeclaration &, const std::string &, const std::string &);
147 void insert_assignment(const std::string &, ProgramSyntax::Expression *);
148 virtual void visit(ProgramSyntax::VariableReference &);
149 virtual void visit(ProgramSyntax::VariableDeclaration &);
150 virtual void visit(ProgramSyntax::Passthrough &);
153 struct VariableRenamer: Visitor
155 virtual void visit(ProgramSyntax::VariableReference &);
156 virtual void visit(ProgramSyntax::VariableDeclaration &);
159 struct DeclarationReorderer: Visitor
170 DeclarationKind kind;
172 DeclarationReorderer();
174 virtual void visit(ProgramSyntax::Block &);
175 virtual void visit(ProgramSyntax::InterfaceLayout &) { kind = LAYOUT; }
176 virtual void visit(ProgramSyntax::StructDeclaration &) { kind = STRUCT; }
177 virtual void visit(ProgramSyntax::VariableDeclaration &) { kind = VARIABLE; }
178 virtual void visit(ProgramSyntax::InterfaceBlock &) { kind = VARIABLE; }
179 virtual void visit(ProgramSyntax::FunctionDeclaration &) { kind = FUNCTION; }
182 struct ExpressionEvaluator: ProgramSyntax::NodeVisitor
184 typedef std::map<ProgramSyntax::VariableDeclaration *, ProgramSyntax::Expression *> ValueMap;
186 const ValueMap *variable_values;
190 ExpressionEvaluator();
191 ExpressionEvaluator(const ValueMap &);
193 virtual void visit(ProgramSyntax::Literal &);
194 virtual void visit(ProgramSyntax::ParenthesizedExpression &);
195 virtual void visit(ProgramSyntax::VariableReference &);
196 virtual void visit(ProgramSyntax::UnaryExpression &);
197 virtual void visit(ProgramSyntax::BinaryExpression &);
200 struct ConstantConditionEliminator: BlockModifier
202 unsigned scope_level;
203 ExpressionEvaluator::ValueMap variable_values;
205 ConstantConditionEliminator();
207 virtual void visit(ProgramSyntax::Block &);
208 virtual void visit(ProgramSyntax::Assignment &);
209 virtual void visit(ProgramSyntax::VariableDeclaration &);
210 virtual void visit(ProgramSyntax::Conditional &);
211 virtual void visit(ProgramSyntax::Iteration &);
214 struct UnusedVariableLocator: Visitor
216 struct AssignmentList
218 std::vector<ProgramSyntax::Node *> nodes;
220 bool self_referencing;
223 typedef std::set<ProgramSyntax::Node *> ResultType;
224 typedef std::map<ProgramSyntax::VariableDeclaration *, AssignmentList> BlockAssignmentMap;
226 std::set<ProgramSyntax::Node *> unused_nodes;
227 std::map<ProgramSyntax::VariableDeclaration *, ProgramSyntax::Node *> aggregates;
228 ProgramSyntax::Node *aggregate;
229 std::vector<BlockAssignmentMap> assignments;
230 ProgramSyntax::Assignment *assignment;
231 bool assignment_target;
233 UnusedVariableLocator();
235 virtual void apply(ProgramSyntax::Stage &);
236 const ResultType &get_result() const { return unused_nodes; }
237 virtual void visit(ProgramSyntax::VariableReference &);
238 virtual void visit(ProgramSyntax::MemberAccess &);
239 virtual void visit(ProgramSyntax::BinaryExpression &);
240 virtual void visit(ProgramSyntax::Assignment &);
241 void record_assignment(ProgramSyntax::VariableDeclaration &, ProgramSyntax::Node &, bool);
242 virtual void visit(ProgramSyntax::ExpressionStatement &);
243 virtual void visit(ProgramSyntax::StructDeclaration &);
244 virtual void visit(ProgramSyntax::VariableDeclaration &);
245 virtual void visit(ProgramSyntax::InterfaceBlock &);
246 virtual void visit(ProgramSyntax::FunctionDeclaration &);
247 void merge_down_assignments();
248 virtual void visit(ProgramSyntax::Conditional &);
249 virtual void visit(ProgramSyntax::Iteration &);
252 struct UnusedFunctionLocator: Visitor
254 typedef std::set<ProgramSyntax::Node *> ResultType;
256 std::set<ProgramSyntax::Node *> unused_nodes;
257 std::set<ProgramSyntax::FunctionDeclaration *> used_definitions;
259 const ResultType &get_result() const { return unused_nodes; }
260 virtual void visit(ProgramSyntax::FunctionCall &);
261 virtual void visit(ProgramSyntax::FunctionDeclaration &);
264 struct NodeRemover: Visitor
266 std::set<ProgramSyntax::Node *> to_remove;
269 NodeRemover(const std::set<ProgramSyntax::Node *> &);
271 virtual void visit(ProgramSyntax::Block &);
272 virtual void visit(ProgramSyntax::VariableDeclaration &);
275 struct LegacyConverter: BlockModifier
277 Version target_version;
279 std::string frag_out_name;
282 LegacyConverter(const Version &);
284 bool check_version(const Version &);
285 virtual void visit(ProgramSyntax::VariableReference &);
286 virtual void visit(ProgramSyntax::FunctionCall &);
287 virtual void visit(ProgramSyntax::VariableDeclaration &);
288 virtual void visit(ProgramSyntax::InterfaceBlock &);
291 Resources *resources;
292 ProgramParser parser;
293 ProgramSyntax::Module *module;
298 void compile(const std::string &);
299 void compile(IO::Base &, Resources * = 0);
300 void add_shaders(Program &);
303 static ProgramSyntax::Module *create_builtins_module();
304 static ProgramSyntax::Module &get_builtins_module();
305 static ProgramSyntax::Stage *get_builtins(ProgramSyntax::StageType);
307 void import(const std::string &);
308 void generate(ProgramSyntax::Stage &);
309 bool optimize(ProgramSyntax::Stage &);
310 static void inject_block(ProgramSyntax::Block &, const ProgramSyntax::Block &);
312 static typename T::ResultType apply(ProgramSyntax::Stage &);
313 template<typename T, typename A>
314 static typename T::ResultType apply(ProgramSyntax::Stage &, const A &);