1 #include <msp/core/raii.h>
2 #include <msp/strings/format.h>
11 Formatter::Formatter():
16 parameter_list(false),
20 const string &Formatter::apply(Stage &s)
25 const Version &ver = s.required_features.glsl_version;
29 append(format("#version %d%02d", ver.major, ver.minor));
30 if(s.required_features.gl_api==OPENGL_ES2 && ver>=Version(3, 0))
35 if(s.required_features.arb_explicit_attrib_location)
36 append("#extension arb_explicit_attrib_location: require\n");
37 if(s.required_features.arb_gpu_shader5)
38 append("#extension arb_gpu_shader5: require\n");
39 if(s.required_features.arb_uniform_buffer_object)
40 append("#extension arb_uniform_buffer_object: require\n");
41 if(s.required_features.ext_gpu_shader4)
42 append("#extension ext_gpu_shader4: require\n");
43 if(s.required_features.ext_texture_array)
44 append("#extension ext_texture_array: require\n");
47 s.content.visit(*this);
52 void Formatter::append(const string &text)
55 for(string::const_iterator i=text.begin(); i!=text.end(); ++i)
60 void Formatter::append(char c)
67 void Formatter::set_source(unsigned index, unsigned line)
69 if(index!=source_index || (index && line!=source_line))
71 if(index==source_index && line==source_line+1)
76 if(stage && stage->required_features.glsl_version && stage->required_features.glsl_version<Version(3, 30))
78 formatted += format("#line %d %d\n", l, index);
85 void Formatter::visit(Block &block)
87 unsigned brace_indent = indent;
88 bool use_braces = (block.use_braces || (indent && block.body.size()!=1));
90 append(format("%s{\n", string(brace_indent*2, ' ')));
92 SetForScope<unsigned> set(indent, indent+(indent>0 || use_braces));
93 string spaces(indent*2, ' ');
95 for(NodeList<Statement>::iterator i=block.body.begin(); i!=block.body.end(); ++i)
97 if(omit_builtin && (*i)->source<=BUILTIN_SOURCE)
102 set_source((*i)->source, (*i)->line);
108 append(format("\n%s}", string(brace_indent*2, ' ')));
111 void Formatter::visit(Literal &literal)
113 append(literal.token);
116 void Formatter::visit(ParenthesizedExpression &parexpr)
119 parexpr.expression->visit(*this);
123 void Formatter::visit(VariableReference &var)
128 void Formatter::visit(InterfaceBlockReference &iface)
133 void Formatter::visit(MemberAccess &memacc)
135 memacc.left->visit(*this);
136 append(format(".%s", memacc.member));
139 void Formatter::visit(Swizzle &swizzle)
141 swizzle.left->visit(*this);
142 append(format(".%s", swizzle.component_group));
145 void Formatter::visit(UnaryExpression &unary)
147 if(unary.oper->type==Operator::PREFIX)
148 append(unary.oper->token);
149 unary.expression->visit(*this);
150 if(unary.oper->type==Operator::POSTFIX)
151 append(unary.oper->token);
154 void Formatter::visit(BinaryExpression &binary)
156 binary.left->visit(*this);
157 append(binary.oper->token);
158 binary.right->visit(*this);
159 if(binary.oper->token[0]=='[')
163 void Formatter::visit(Assignment &assign)
165 assign.left->visit(*this);
166 append(format(" %s ", assign.oper->token));
167 assign.right->visit(*this);
170 void Formatter::visit(TernaryExpression &ternary)
172 ternary.condition->visit(*this);
173 append(ternary.oper->token);
174 ternary.true_expr->visit(*this);
175 if(ternary.oper->token[0]=='?')
177 ternary.false_expr->visit(*this);
180 void Formatter::visit(FunctionCall &call)
182 append(format("%s(", call.name));
183 for(NodeArray<Expression>::iterator i=call.arguments.begin(); i!=call.arguments.end(); ++i)
185 if(i!=call.arguments.begin())
192 void Formatter::visit(ExpressionStatement &expr)
194 expr.expression->visit(*this);
198 void Formatter::visit(Import &import)
200 append(format("import %s;", import.module));
203 void Formatter::visit(Precision &prec)
205 append(format("precision %s %s;", prec.precision, prec.type));
208 void Formatter::visit(Layout &layout)
211 for(vector<Layout::Qualifier>::const_iterator i=layout.qualifiers.begin(); i!=layout.qualifiers.end(); ++i)
213 if(i!=layout.qualifiers.begin())
217 append(format("=%d", i->value));
222 void Formatter::visit(InterfaceLayout &layout)
224 layout.layout.visit(*this);
225 append(format(" %s;", layout.interface));
228 void Formatter::visit(StructDeclaration &strct)
230 append(format("struct %s\n", strct.name));
231 strct.members.visit(*this);
235 void Formatter::visit(VariableDeclaration &var)
239 var.layout->visit(*this);
244 if(!var.interpolation.empty())
245 append(format("%s ", var.interpolation));
246 if(!var.sampling.empty())
247 append(format("%s ", var.sampling));
248 if(!var.interface.empty())
250 string interface = var.interface;
251 if(stage && stage->required_features.glsl_version && stage->required_features.glsl_version<Version(1, 30))
253 if(stage->type==Stage::VERTEX && var.interface=="in")
254 interface = "attribute";
255 else if((stage->type==Stage::VERTEX && var.interface=="out") || (stage->type==Stage::FRAGMENT && var.interface=="in"))
256 interface = "varying";
258 append(format("%s ", interface));
260 if(!var.precision.empty())
261 append(format("%s ", var.precision));
262 string type_name = var.type_declaration->name;
264 type_name = type_name.substr(0, type_name.find('['));
265 append(format("%s %s", type_name, var.name));
270 var.array_size->visit(*this);
273 if(var.init_expression)
276 var.init_expression->visit(*this);
282 void Formatter::visit(InterfaceBlock &iface)
284 append(format("%s %s\n", iface.interface, iface.name));
285 if(iface.struct_declaration)
286 iface.struct_declaration->members.visit(*this);
287 if(!iface.instance_name.empty())
290 append(iface.instance_name);
297 void Formatter::visit(FunctionDeclaration &func)
299 append(format("%s %s(", func.return_type_declaration->name, func.name));
300 for(NodeArray<VariableDeclaration>::iterator i=func.parameters.begin(); i!=func.parameters.end(); ++i)
302 if(i!=func.parameters.begin())
304 SetFlag set(parameter_list);
308 if(func.definition==&func)
311 func.body.visit(*this);
317 void Formatter::visit(Conditional &cond)
320 cond.condition->visit(*this);
323 cond.body.visit(*this);
324 if(!cond.else_body.body.empty())
326 Conditional *else_cond = dynamic_cast<Conditional *>(cond.else_body.body.front().get());
327 if(cond.else_body.body.size()==1 && else_cond)
330 set_source(else_cond->source, else_cond->line);
331 append(format("%selse ", string(indent*2, ' ')));
332 else_cond->visit(*this);
336 append(format("\n%selse\n", string(indent*2, ' ')));
337 cond.else_body.visit(*this);
342 void Formatter::visit(Iteration &iter)
344 if(!iter.init_statement && iter.condition && !iter.loop_expression)
347 iter.condition->visit(*this);
353 if(iter.init_statement)
354 iter.init_statement->visit(*this);
360 iter.condition->visit(*this);
363 if(iter.loop_expression)
366 iter.loop_expression->visit(*this);
371 if(iter.body.body.empty())
376 iter.body.visit(*this);
380 void Formatter::visit(Passthrough &pass)
382 append("passthrough");
386 pass.subscript->visit(*this);
392 void Formatter::visit(Return &ret)
398 ret.expression->visit(*this);
403 void Formatter::visit(Jump &jump)
405 append(jump.keyword);