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<ProgramSyntax::Node *> insert_nodes;
128 void flatten_block(ProgramSyntax::Block &);
129 void apply_and_increment(ProgramSyntax::Block &, std::list<ProgramSyntax::NodePtr<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, 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 ExpressionEvaluator: ProgramSyntax::NodeVisitor
161 typedef std::map<ProgramSyntax::VariableDeclaration *, ProgramSyntax::Expression *> ValueMap;
163 const ValueMap *variable_values;
167 ExpressionEvaluator();
168 ExpressionEvaluator(const ValueMap &);
170 virtual void visit(ProgramSyntax::Literal &);
171 virtual void visit(ProgramSyntax::VariableReference &);
172 virtual void visit(ProgramSyntax::UnaryExpression &);
173 virtual void visit(ProgramSyntax::BinaryExpression &);
176 struct ConstantConditionEliminator: BlockModifier
178 unsigned scope_level;
179 ExpressionEvaluator::ValueMap variable_values;
181 ConstantConditionEliminator();
183 virtual void visit(ProgramSyntax::Block &);
184 virtual void visit(ProgramSyntax::Assignment &);
185 virtual void visit(ProgramSyntax::VariableDeclaration &);
186 virtual void visit(ProgramSyntax::Conditional &);
187 virtual void visit(ProgramSyntax::Iteration &);
190 struct UnusedVariableLocator: Visitor
192 struct AssignmentList
194 std::vector<ProgramSyntax::Node *> nodes;
196 bool self_referencing;
199 typedef std::set<ProgramSyntax::Node *> ResultType;
200 typedef std::map<ProgramSyntax::VariableDeclaration *, AssignmentList> BlockAssignmentMap;
202 std::set<ProgramSyntax::Node *> unused_nodes;
203 std::map<ProgramSyntax::VariableDeclaration *, ProgramSyntax::Node *> aggregates;
204 ProgramSyntax::Node *aggregate;
205 std::vector<BlockAssignmentMap> assignments;
206 ProgramSyntax::Assignment *assignment;
207 bool assignment_target;
209 UnusedVariableLocator();
211 virtual void apply(ProgramSyntax::Stage &);
212 const ResultType &get_result() const { return unused_nodes; }
213 virtual void visit(ProgramSyntax::VariableReference &);
214 virtual void visit(ProgramSyntax::MemberAccess &);
215 virtual void visit(ProgramSyntax::BinaryExpression &);
216 virtual void visit(ProgramSyntax::Assignment &);
217 void record_assignment(ProgramSyntax::VariableDeclaration &, ProgramSyntax::Node &, bool);
218 virtual void visit(ProgramSyntax::ExpressionStatement &);
219 virtual void visit(ProgramSyntax::StructDeclaration &);
220 virtual void visit(ProgramSyntax::VariableDeclaration &);
221 virtual void visit(ProgramSyntax::InterfaceBlock &);
222 virtual void visit(ProgramSyntax::FunctionDeclaration &);
223 void merge_down_assignments();
224 virtual void visit(ProgramSyntax::Conditional &);
225 virtual void visit(ProgramSyntax::Iteration &);
228 struct UnusedFunctionLocator: Visitor
230 typedef std::set<ProgramSyntax::Node *> ResultType;
232 std::set<ProgramSyntax::Node *> unused_nodes;
233 std::set<ProgramSyntax::FunctionDeclaration *> used_definitions;
235 const ResultType &get_result() const { return unused_nodes; }
236 virtual void visit(ProgramSyntax::FunctionCall &);
237 virtual void visit(ProgramSyntax::FunctionDeclaration &);
240 struct NodeRemover: Visitor
242 std::set<ProgramSyntax::Node *> to_remove;
245 NodeRemover(const std::set<ProgramSyntax::Node *> &);
247 virtual void visit(ProgramSyntax::Block &);
248 virtual void visit(ProgramSyntax::VariableDeclaration &);
251 struct LegacyConverter: BlockModifier
253 Version target_version;
255 std::string frag_out_name;
258 LegacyConverter(const Version &);
260 bool check_version(const Version &);
261 virtual void visit(ProgramSyntax::VariableReference &);
262 virtual void visit(ProgramSyntax::FunctionCall &);
263 virtual void visit(ProgramSyntax::VariableDeclaration &);
264 virtual void visit(ProgramSyntax::InterfaceBlock &);
267 Resources *resources;
268 ProgramParser parser;
269 ProgramSyntax::Module *module;
274 void compile(const std::string &);
275 void compile(IO::Base &, Resources * = 0);
276 void add_shaders(Program &);
279 static ProgramSyntax::Module *create_builtins_module();
280 static ProgramSyntax::Module &get_builtins_module();
281 static ProgramSyntax::Stage *get_builtins(ProgramSyntax::StageType);
283 void import(const std::string &);
284 void generate(ProgramSyntax::Stage &);
285 bool optimize(ProgramSyntax::Stage &);
286 static void inject_block(ProgramSyntax::Block &, const ProgramSyntax::Block &);
288 static typename T::ResultType apply(ProgramSyntax::Stage &);
289 template<typename T, typename A>
290 static typename T::ResultType apply(ProgramSyntax::Stage &, const A &);