source/glsl/syntax.cpp

   1 #include <msp/core/maputils.h>
   2 #include "syntax.h"
   3 #include "visitor.h"
   4
   5 using namespace std;
   6
   7 namespace Msp {
   8 namespace GL {
   9 namespace SL {
  10
  11 const Operator Operator::operators[] =
  12 {
  13         { "[", "]", 2, BINARY, LEFT_TO_RIGHT },
  14         { "(", ")", 2, POSTFIX, LEFT_TO_RIGHT },
  15         { ".", { }, 2, POSTFIX, LEFT_TO_RIGHT },
  16         { "++", { }, 2, POSTFIX, LEFT_TO_RIGHT },
  17         { "--", { }, 2, POSTFIX, LEFT_TO_RIGHT },
  18         { "++", { }, 3, PREFIX, RIGHT_TO_LEFT },
  19         { "--", { }, 3, PREFIX, RIGHT_TO_LEFT },
  20         { "+", { }, 3, PREFIX, RIGHT_TO_LEFT },
  21         { "-", { }, 3, PREFIX, RIGHT_TO_LEFT },
  22         { "~", { }, 3, PREFIX, RIGHT_TO_LEFT },
  23         { "!", { }, 3, PREFIX, RIGHT_TO_LEFT },
  24         { "*", { }, 4, BINARY, ASSOCIATIVE },
  25         { "/", { }, 4, BINARY, LEFT_TO_RIGHT },
  26         { "%", { }, 4, BINARY, LEFT_TO_RIGHT },
  27         { "+", { }, 5, BINARY, ASSOCIATIVE },
  28         { "-", { }, 5, BINARY, LEFT_TO_RIGHT },
  29         { "<<", { }, 6, BINARY, LEFT_TO_RIGHT },
  30         { ">>", { }, 6, BINARY, LEFT_TO_RIGHT },
  31         { "<", { }, 7, BINARY, LEFT_TO_RIGHT },
  32         { ">", { }, 7, BINARY, LEFT_TO_RIGHT },
  33         { "<=", { }, 7, BINARY, LEFT_TO_RIGHT },
  34         { ">=", { }, 7, BINARY, LEFT_TO_RIGHT },
  35         { "==", { }, 8, BINARY, LEFT_TO_RIGHT },
  36         { "!=", { }, 8, BINARY, LEFT_TO_RIGHT },
  37         { "&", { }, 9, BINARY, ASSOCIATIVE },
  38         { "^", { }, 10, BINARY, ASSOCIATIVE },
  39         { "|", { }, 11, BINARY, ASSOCIATIVE },
  40         { "&&", { }, 12, BINARY, ASSOCIATIVE },
  41         { "^^", { }, 13, BINARY, ASSOCIATIVE },
  42         { "||", { }, 14, BINARY, ASSOCIATIVE },
  43         { "?", ":", 15, TERNARY, RIGHT_TO_LEFT },
  44         { "=", { }, 16, BINARY, RIGHT_TO_LEFT },
  45         { "+=", { }, 16, BINARY, RIGHT_TO_LEFT },
  46         { "-=", { }, 16, BINARY, RIGHT_TO_LEFT },
  47         { "*=", { }, 16, BINARY, RIGHT_TO_LEFT },
  48         { "/=", { }, 16, BINARY, RIGHT_TO_LEFT },
  49         { "%=", { }, 16, BINARY, RIGHT_TO_LEFT },
  50         { "<<=", { }, 16, BINARY, RIGHT_TO_LEFT },
  51         { ">>=", { }, 16, BINARY, RIGHT_TO_LEFT },
  52         { "&=", { }, 16, BINARY, RIGHT_TO_LEFT },
  53         { "^=", { }, 16, BINARY, RIGHT_TO_LEFT },
  54         { "|=", { }, 16, BINARY, RIGHT_TO_LEFT },
  55         { ",", { }, 17, BINARY, LEFT_TO_RIGHT },
  56         { { 0 }, { }, 18, NO_OPERATOR, LEFT_TO_RIGHT }
  57 };
  58
  59 const Operator &Operator::get_operator(const string &token, Type type)
  60 {
  61         for(const Operator *i=operators; i->type; ++i)
  62                 if(i->type==type && i->token==token)
  63                         return *i;
  64         throw key_error(token);
  65 }
  66
  67
  68 template<typename C>
  69 NodeContainer<C>::NodeContainer(const NodeContainer &c):
  70         C(c)
  71 {
  72         for(typename C::iterator i=this->begin(); i!=this->end(); ++i)
  73                 *i = (*i)->clone();
  74 }
  75
  76
  77 Block::Block():
  78         use_braces(false),
  79         parent(0)
  80 { }
  81
  82 Block::Block(const Block &other):
  83         Node(other),
  84         body(other.body),
  85         use_braces(other.use_braces),
  86         parent(0)
  87 { }
  88
  89 void Block::visit(NodeVisitor &visitor)
  90 {
  91         visitor.visit(*this);
  92 }
  93
  94
  95 Expression::Expression():
  96         oper(0),
  97         type(0),
  98         lvalue(false)
  99 { }
 100
 101
 102 void Literal::visit(NodeVisitor &visitor)
 103 {
 104         visitor.visit(*this);
 105 }
 106
 107
 108 VariableReference::VariableReference():
 109         declaration(0)
 110 { }
 111
 112 VariableReference::VariableReference(const VariableReference &other):
 113         Expression(other),
 114         name(other.name),
 115         declaration(0)
 116 { }
 117
 118 void VariableReference::visit(NodeVisitor &visitor)
 119 {
 120         visitor.visit(*this);
 121 }
 122
 123
 124 InterfaceBlockReference::InterfaceBlockReference():
 125         declaration(0)
 126 { }
 127
 128 InterfaceBlockReference::InterfaceBlockReference(const InterfaceBlockReference &other):
 129         Expression(other),
 130         name(other.name),
 131         declaration(0)
 132 { }
 133
 134 void InterfaceBlockReference::visit(NodeVisitor &visitor)
 135 {
 136         visitor.visit(*this);
 137 }
 138
 139
 140 MemberAccess::MemberAccess():
 141         declaration(0),
 142         index(-1)
 143 { }
 144
 145 MemberAccess::MemberAccess(const MemberAccess &other):
 146         Expression(other),
 147         left(other.left),
 148         member(other.member),
 149         declaration(0),
 150         index(-1)
 151 { }
 152
 153 void MemberAccess::visit(NodeVisitor &visitor)
 154 {
 155         visitor.visit(*this);
 156 }
 157
 158
 159 Swizzle::Swizzle():
 160         count(0)
 161 {
 162         fill(components, components+4, 0);
 163 }
 164
 165 void Swizzle::visit(NodeVisitor &visitor)
 166 {
 167         visitor.visit(*this);
 168 }
 169
 170
 171 void UnaryExpression::visit(NodeVisitor &visitor)
 172 {
 173         visitor.visit(*this);
 174 }
 175
 176
 177 void BinaryExpression::visit(NodeVisitor &visitor)
 178 {
 179         visitor.visit(*this);
 180 }
 181
 182
 183 Assignment::Assignment():
 184         self_referencing(false)
 185 { }
 186
 187 Assignment::Assignment(const Assignment &other):
 188         BinaryExpression(other),
 189         self_referencing(other.self_referencing)
 190 { }
 191
 192 void Assignment::visit(NodeVisitor &visitor)
 193 {
 194         visitor.visit(*this);
 195 }
 196
 197
 198 Assignment::Target::Target(Statement *d):
 199         declaration(d),
 200         chain_len(0)
 201 {
 202         fill(chain, chain+7, 0);
 203 }
 204
 205 bool Assignment::Target::operator<(const Target &other) const
 206 {
 207         if(declaration!=other.declaration)
 208                 return declaration<other.declaration;
 209         for(unsigned i=0; (i<7 && i<chain_len && i<other.chain_len); ++i)
 210                 if(chain[i]!=other.chain[i])
 211                         return chain[i]<other.chain[i];
 212         return chain_len<other.chain_len;
 213 }
 214
 215
 216 void TernaryExpression::visit(NodeVisitor &visitor)
 217 {
 218         visitor.visit(*this);
 219 }
 220
 221
 222 FunctionCall::FunctionCall():
 223         constructor(false),
 224         declaration(0)
 225 { }
 226
 227 FunctionCall::FunctionCall(const FunctionCall &other):
 228         Expression(other),
 229         name(other.name),
 230         constructor(other.constructor),
 231         arguments(other.arguments),
 232         declaration(0)
 233 { }
 234
 235 void FunctionCall::visit(NodeVisitor &visitor)
 236 {
 237         visitor.visit(*this);
 238 }
 239
 240
 241 void ExpressionStatement::visit(NodeVisitor &visitor)
 242 {
 243         visitor.visit(*this);
 244 }
 245
 246
 247 void Import::visit(NodeVisitor &visitor)
 248 {
 249         visitor.visit(*this);
 250 }
 251
 252
 253 void Precision::visit(NodeVisitor &visitor)
 254 {
 255         visitor.visit(*this);
 256 }
 257
 258
 259 void Layout::visit(NodeVisitor &visitor)
 260 {
 261         visitor.visit(*this);
 262 }
 263
 264
 265 void InterfaceLayout::visit(NodeVisitor &visitor)
 266 {
 267         visitor.visit(*this);
 268 }
 269
 270
 271 BasicTypeDeclaration::BasicTypeDeclaration():
 272         kind(ALIAS),
 273         size(0),
 274         sign(true),
 275         base_type(0)
 276 { }
 277
 278 BasicTypeDeclaration::BasicTypeDeclaration(const BasicTypeDeclaration &other):
 279         TypeDeclaration(other),
 280         kind(other.kind),
 281         size(other.size),
 282         sign(other.sign),
 283         base(other.base),
 284         base_type(0)
 285 { }
 286
 287 void BasicTypeDeclaration::visit(NodeVisitor &visitor)
 288 {
 289         visitor.visit(*this);
 290 }
 291
 292
 293 ImageTypeDeclaration::ImageTypeDeclaration():
 294         dimensions(TWO),
 295         array(false),
 296         sampled(true),
 297         shadow(false)
 298 { }
 299
 300 void ImageTypeDeclaration::visit(NodeVisitor &visitor)
 301 {
 302         visitor.visit(*this);
 303 }
 304
 305
 306 StructDeclaration::StructDeclaration():
 307         interface_block(0)
 308 {
 309         members.use_braces = true;
 310 }
 311
 312 StructDeclaration::StructDeclaration(const StructDeclaration &other):
 313         TypeDeclaration(other),
 314         members(other.members),
 315         interface_block(0)
 316 { }
 317
 318 StructDeclaration::~StructDeclaration()
 319 {
 320         if(interface_block && interface_block->struct_declaration==this)
 321                 interface_block->struct_declaration = 0;
 322 }
 323
 324 void StructDeclaration::visit(NodeVisitor &visitor)
 325 {
 326         visitor.visit(*this);
 327 }
 328
 329
 330 VariableDeclaration::VariableDeclaration():
 331         constant(false),
 332         array(false),
 333         type_declaration(0),
 334         linked_declaration(0)
 335 { }
 336
 337 VariableDeclaration::VariableDeclaration(const VariableDeclaration &other):
 338         Statement(other),
 339         layout(other.layout),
 340         constant(other.constant),
 341         sampling(other.sampling),
 342         interpolation(other.interpolation),
 343         interface(other.interface),
 344         precision(other.precision),
 345         type(other.type),
 346         name(other.name),
 347         array(other.array),
 348         array_size(other.array_size),
 349         init_expression(other.init_expression),
 350         type_declaration(0),
 351         linked_declaration(0)
 352 { }
 353
 354 VariableDeclaration::~VariableDeclaration()
 355 {
 356         if(linked_declaration && linked_declaration->linked_declaration==this)
 357                 linked_declaration->linked_declaration = 0;
 358 }
 359
 360 void VariableDeclaration::visit(NodeVisitor &visitor)
 361 {
 362         visitor.visit(*this);
 363 }
 364
 365
 366 InterfaceBlock::InterfaceBlock():
 367         array(false),
 368         type_declaration(0),
 369         struct_declaration(0),
 370         linked_block(0)
 371 { }
 372
 373 InterfaceBlock::InterfaceBlock(const InterfaceBlock &other):
 374         Statement(other),
 375         interface(other.interface),
 376         block_name(other.block_name),
 377         members(other.members),
 378         instance_name(other.instance_name),
 379         array(other.array),
 380         type_declaration(0),
 381         struct_declaration(0),
 382         linked_block(0)
 383 { }
 384
 385 InterfaceBlock::~InterfaceBlock()
 386 {
 387         if(linked_block && linked_block->linked_block==this)
 388                 linked_block->linked_block = 0;
 389         if(struct_declaration && struct_declaration->interface_block==this)
 390                 struct_declaration->interface_block = 0;
 391 }
 392
 393 void InterfaceBlock::visit(NodeVisitor &visitor)
 394 {
 395         visitor.visit(*this);
 396 }
 397
 398
 399 FunctionDeclaration::FunctionDeclaration():
 400         virtua(false),
 401         overrd(false),
 402         definition(0),
 403         return_type_declaration(0)
 404 { }
 405
 406 FunctionDeclaration::FunctionDeclaration(const FunctionDeclaration &other):
 407         Statement(other),
 408         return_type(other.return_type),
 409         name(other.name),
 410         parameters(other.parameters),
 411         virtua(other.virtua),
 412         overrd(other.overrd),
 413         body(other.body),
 414         signature(other.signature),
 415         definition(other.definition==&other ? this : 0),
 416         return_type_declaration(0)
 417 { }
 418
 419 void FunctionDeclaration::visit(NodeVisitor &visitor)
 420 {
 421         visitor.visit(*this);
 422 }
 423
 424
 425 void Conditional::visit(NodeVisitor &visitor)
 426 {
 427         visitor.visit(*this);
 428 }
 429
 430
 431 void Iteration::visit(NodeVisitor &visitor)
 432 {
 433         visitor.visit(*this);
 434 }
 435
 436
 437 void Passthrough::visit(NodeVisitor &visitor)
 438 {
 439         visitor.visit(*this);
 440 }
 441
 442
 443 void Return::visit(NodeVisitor &visitor)
 444 {
 445         visitor.visit(*this);
 446 }
 447
 448
 449 void Jump::visit(NodeVisitor &visitor)
 450 {
 451         visitor.visit(*this);
 452 }
 453
 454
 455 Stage::Stage(Stage::Type t):
 456         type(t),
 457         previous(0)
 458 { }
 459
 460 const char *Stage::get_stage_name(Type type)
 461 {
 462         static const char *names[] = { "shared", "vertex", "geometry", "fragment" };
 463         return names[type];
 464 }
 465
 466
 467 Module::Module():
 468         shared(Stage::SHARED)
 469 { }
 470
 471
 472 string get_unused_variable_name(const Block &block, const string &base)
 473 {
 474         string name = base;
 475
 476         unsigned number = 1;
 477         unsigned base_size = name.size();
 478         while(1)
 479         {
 480                 bool unused = true;
 481                 for(const Block *b=&block; (unused && b); b=b->parent)
 482                         unused = !b->variables.count(name);
 483                 if(unused)
 484                         return name;
 485
 486                 name.erase(base_size);
 487                 name += format("_%d", number);
 488                 ++number;
 489         }
 490 }
 491
 492 int get_layout_value(const Layout &layout, const string &name, int def_value)
 493 {
 494         for(vector<Layout::Qualifier>::const_iterator i=layout.qualifiers.begin(); i!=layout.qualifiers.end(); ++i)
 495                 if(i->name==name)
 496                         return i->value;
 497         return def_value;
 498 }
 499
 500 void add_to_chain(Assignment::Target &target, Assignment::Target::ChainType type, unsigned index)
 501 {
 502         if(target.chain_len<7)
 503                 target.chain[target.chain_len] = type | min<unsigned>(index, 0x3F);
 504         ++target.chain_len;
 505 }
 506
 507 } // namespace SL
 508 } // namespace GL
 509 } // namespace Msp