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|
- //
- // Copyright (C) 2016-2018 Google, Inc.
- // Copyright (C) 2016 LunarG, Inc.
- //
- // All rights reserved.
- //
- // Redistribution and use in source and binary forms, with or without
- // modification, are permitted provided that the following conditions
- // are met:
- //
- // Redistributions of source code must retain the above copyright
- // notice, this list of conditions and the following disclaimer.
- //
- // Redistributions in binary form must reproduce the above
- // copyright notice, this list of conditions and the following
- // disclaimer in the documentation and/or other materials provided
- // with the distribution.
- //
- // Neither the name of Google, Inc., nor the names of its
- // contributors may be used to endorse or promote products derived
- // from this software without specific prior written permission.
- //
- // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- // FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- // COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- // INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- // BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- // LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- // LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- // ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- // POSSIBILITY OF SUCH DAMAGE.
- //
- //
- // This is a set of mutually recursive methods implementing the HLSL grammar.
- // Generally, each returns
- // - through an argument: a type specifically appropriate to which rule it
- // recognized
- // - through the return value: true/false to indicate whether or not it
- // recognized its rule
- //
- // As much as possible, only grammar recognition should happen in this file,
- // with all other work being farmed out to hlslParseHelper.cpp, which in turn
- // will build the AST.
- //
- // The next token, yet to be "accepted" is always sitting in 'token'.
- // When a method says it accepts a rule, that means all tokens involved
- // in the rule will have been consumed, and none left in 'token'.
- //
- #include "hlslTokens.h"
- #include "hlslGrammar.h"
- #include "hlslAttributes.h"
- namespace glslang {
- // Root entry point to this recursive decent parser.
- // Return true if compilation unit was successfully accepted.
- bool HlslGrammar::parse()
- {
- advanceToken();
- return acceptCompilationUnit();
- }
- void HlslGrammar::expected(const char* syntax)
- {
- parseContext.error(token.loc, "Expected", syntax, "");
- }
- void HlslGrammar::unimplemented(const char* error)
- {
- parseContext.error(token.loc, "Unimplemented", error, "");
- }
- // IDENTIFIER
- // THIS
- // type that can be used as IDENTIFIER
- //
- // Only process the next token if it is an identifier.
- // Return true if it was an identifier.
- bool HlslGrammar::acceptIdentifier(HlslToken& idToken)
- {
- // IDENTIFIER
- if (peekTokenClass(EHTokIdentifier)) {
- idToken = token;
- advanceToken();
- return true;
- }
- // THIS
- // -> maps to the IDENTIFIER spelled with the internal special name for 'this'
- if (peekTokenClass(EHTokThis)) {
- idToken = token;
- advanceToken();
- idToken.tokenClass = EHTokIdentifier;
- idToken.string = NewPoolTString(intermediate.implicitThisName);
- return true;
- }
- // type that can be used as IDENTIFIER
- // Even though "sample", "bool", "float", etc keywords (for types, interpolation modifiers),
- // they ARE still accepted as identifiers. This is not a dense space: e.g, "void" is not a
- // valid identifier, nor is "linear". This code special cases the known instances of this, so
- // e.g, "int sample;" or "float float;" is accepted. Other cases can be added here if needed.
- const char* idString = getTypeString(peek());
- if (idString == nullptr)
- return false;
- token.string = NewPoolTString(idString);
- token.tokenClass = EHTokIdentifier;
- idToken = token;
- typeIdentifiers = true;
- advanceToken();
- return true;
- }
- // compilationUnit
- // : declaration_list EOF
- //
- bool HlslGrammar::acceptCompilationUnit()
- {
- if (! acceptDeclarationList(unitNode))
- return false;
- if (! peekTokenClass(EHTokNone))
- return false;
- // set root of AST
- if (unitNode && !unitNode->getAsAggregate())
- unitNode = intermediate.growAggregate(nullptr, unitNode);
- intermediate.setTreeRoot(unitNode);
- return true;
- }
- // Recognize the following, but with the extra condition that it can be
- // successfully terminated by EOF or '}'.
- //
- // declaration_list
- // : list of declaration_or_semicolon followed by EOF or RIGHT_BRACE
- //
- // declaration_or_semicolon
- // : declaration
- // : SEMICOLON
- //
- bool HlslGrammar::acceptDeclarationList(TIntermNode*& nodeList)
- {
- do {
- // HLSL allows extra semicolons between global declarations
- do { } while (acceptTokenClass(EHTokSemicolon));
- // EOF or RIGHT_BRACE
- if (peekTokenClass(EHTokNone) || peekTokenClass(EHTokRightBrace))
- return true;
- // declaration
- if (! acceptDeclaration(nodeList))
- return false;
- } while (true);
- return true;
- }
- // sampler_state
- // : LEFT_BRACE [sampler_state_assignment ... ] RIGHT_BRACE
- //
- // sampler_state_assignment
- // : sampler_state_identifier EQUAL value SEMICOLON
- //
- // sampler_state_identifier
- // : ADDRESSU
- // | ADDRESSV
- // | ADDRESSW
- // | BORDERCOLOR
- // | FILTER
- // | MAXANISOTROPY
- // | MAXLOD
- // | MINLOD
- // | MIPLODBIAS
- //
- bool HlslGrammar::acceptSamplerState()
- {
- // TODO: this should be genericized to accept a list of valid tokens and
- // return token/value pairs. Presently it is specific to texture values.
- if (! acceptTokenClass(EHTokLeftBrace))
- return true;
- parseContext.warn(token.loc, "unimplemented", "immediate sampler state", "");
- do {
- // read state name
- HlslToken state;
- if (! acceptIdentifier(state))
- break; // end of list
- // FXC accepts any case
- TString stateName = *state.string;
- std::transform(stateName.begin(), stateName.end(), stateName.begin(), ::tolower);
- if (! acceptTokenClass(EHTokAssign)) {
- expected("assign");
- return false;
- }
- if (stateName == "minlod" || stateName == "maxlod") {
- if (! peekTokenClass(EHTokIntConstant)) {
- expected("integer");
- return false;
- }
- TIntermTyped* lod = nullptr;
- if (! acceptLiteral(lod)) // should never fail, since we just looked for an integer
- return false;
- } else if (stateName == "maxanisotropy") {
- if (! peekTokenClass(EHTokIntConstant)) {
- expected("integer");
- return false;
- }
- TIntermTyped* maxAnisotropy = nullptr;
- if (! acceptLiteral(maxAnisotropy)) // should never fail, since we just looked for an integer
- return false;
- } else if (stateName == "filter") {
- HlslToken filterMode;
- if (! acceptIdentifier(filterMode)) {
- expected("filter mode");
- return false;
- }
- } else if (stateName == "addressu" || stateName == "addressv" || stateName == "addressw") {
- HlslToken addrMode;
- if (! acceptIdentifier(addrMode)) {
- expected("texture address mode");
- return false;
- }
- } else if (stateName == "miplodbias") {
- TIntermTyped* lodBias = nullptr;
- if (! acceptLiteral(lodBias)) {
- expected("lod bias");
- return false;
- }
- } else if (stateName == "bordercolor") {
- return false;
- } else {
- expected("texture state");
- return false;
- }
- // SEMICOLON
- if (! acceptTokenClass(EHTokSemicolon)) {
- expected("semicolon");
- return false;
- }
- } while (true);
- if (! acceptTokenClass(EHTokRightBrace))
- return false;
- return true;
- }
- // sampler_declaration_dx9
- // : SAMPLER identifier EQUAL sampler_type sampler_state
- //
- bool HlslGrammar::acceptSamplerDeclarationDX9(TType& /*type*/)
- {
- if (! acceptTokenClass(EHTokSampler))
- return false;
- // TODO: remove this when DX9 style declarations are implemented.
- unimplemented("Direct3D 9 sampler declaration");
- // read sampler name
- HlslToken name;
- if (! acceptIdentifier(name)) {
- expected("sampler name");
- return false;
- }
- if (! acceptTokenClass(EHTokAssign)) {
- expected("=");
- return false;
- }
- return false;
- }
- // declaration
- // : attributes attributed_declaration
- // | NAMESPACE IDENTIFIER LEFT_BRACE declaration_list RIGHT_BRACE
- //
- // attributed_declaration
- // : sampler_declaration_dx9 post_decls SEMICOLON
- // | fully_specified_type // for cbuffer/tbuffer
- // | fully_specified_type declarator_list SEMICOLON // for non cbuffer/tbuffer
- // | fully_specified_type identifier function_parameters post_decls compound_statement // function definition
- // | fully_specified_type identifier sampler_state post_decls compound_statement // sampler definition
- // | typedef declaration
- //
- // declarator_list
- // : declarator COMMA declarator COMMA declarator... // zero or more declarators
- //
- // declarator
- // : identifier array_specifier post_decls
- // | identifier array_specifier post_decls EQUAL assignment_expression
- // | identifier function_parameters post_decls // function prototype
- //
- // Parsing has to go pretty far in to know whether it's a variable, prototype, or
- // function definition, so the implementation below doesn't perfectly divide up the grammar
- // as above. (The 'identifier' in the first item in init_declarator list is the
- // same as 'identifier' for function declarations.)
- //
- // This can generate more than one subtree, one per initializer or a function body.
- // All initializer subtrees are put in their own aggregate node, making one top-level
- // node for all the initializers. Each function created is a top-level node to grow
- // into the passed-in nodeList.
- //
- // If 'nodeList' is passed in as non-null, it must be an aggregate to extend for
- // each top-level node the declaration creates. Otherwise, if only one top-level
- // node in generated here, that is want is returned in nodeList.
- //
- bool HlslGrammar::acceptDeclaration(TIntermNode*& nodeList)
- {
- // NAMESPACE IDENTIFIER LEFT_BRACE declaration_list RIGHT_BRACE
- if (acceptTokenClass(EHTokNamespace)) {
- HlslToken namespaceToken;
- if (!acceptIdentifier(namespaceToken)) {
- expected("namespace name");
- return false;
- }
- parseContext.pushNamespace(*namespaceToken.string);
- if (!acceptTokenClass(EHTokLeftBrace)) {
- expected("{");
- return false;
- }
- if (!acceptDeclarationList(nodeList)) {
- expected("declaration list");
- return false;
- }
- if (!acceptTokenClass(EHTokRightBrace)) {
- expected("}");
- return false;
- }
- parseContext.popNamespace();
- return true;
- }
- bool declarator_list = false; // true when processing comma separation
- // attributes
- TFunctionDeclarator declarator;
- acceptAttributes(declarator.attributes);
- // typedef
- bool typedefDecl = acceptTokenClass(EHTokTypedef);
- TType declaredType;
- // DX9 sampler declaration use a different syntax
- // DX9 shaders need to run through HLSL compiler (fxc) via a back compat mode, it isn't going to
- // be possible to simultaneously compile D3D10+ style shaders and DX9 shaders. If we want to compile DX9
- // HLSL shaders, this will have to be a master level switch
- // As such, the sampler keyword in D3D10+ turns into an automatic sampler type, and is commonly used
- // For that reason, this line is commented out
- // if (acceptSamplerDeclarationDX9(declaredType))
- // return true;
- bool forbidDeclarators = (peekTokenClass(EHTokCBuffer) || peekTokenClass(EHTokTBuffer));
- // fully_specified_type
- if (! acceptFullySpecifiedType(declaredType, nodeList, declarator.attributes, forbidDeclarators))
- return false;
- // cbuffer and tbuffer end with the closing '}'.
- // No semicolon is included.
- if (forbidDeclarators)
- return true;
- // declarator_list
- // : declarator
- // : identifier
- HlslToken idToken;
- TIntermAggregate* initializers = nullptr;
- while (acceptIdentifier(idToken)) {
- TString *fullName = idToken.string;
- if (parseContext.symbolTable.atGlobalLevel())
- parseContext.getFullNamespaceName(fullName);
- if (peekTokenClass(EHTokLeftParen)) {
- // looks like function parameters
- // merge in the attributes into the return type
- parseContext.transferTypeAttributes(token.loc, declarator.attributes, declaredType, true);
- // Potentially rename shader entry point function. No-op most of the time.
- parseContext.renameShaderFunction(fullName);
- // function_parameters
- declarator.function = new TFunction(fullName, declaredType);
- if (!acceptFunctionParameters(*declarator.function)) {
- expected("function parameter list");
- return false;
- }
- // post_decls
- acceptPostDecls(declarator.function->getWritableType().getQualifier());
- // compound_statement (function body definition) or just a prototype?
- declarator.loc = token.loc;
- if (peekTokenClass(EHTokLeftBrace)) {
- if (declarator_list)
- parseContext.error(idToken.loc, "function body can't be in a declarator list", "{", "");
- if (typedefDecl)
- parseContext.error(idToken.loc, "function body can't be in a typedef", "{", "");
- return acceptFunctionDefinition(declarator, nodeList, nullptr);
- } else {
- if (typedefDecl)
- parseContext.error(idToken.loc, "function typedefs not implemented", "{", "");
- parseContext.handleFunctionDeclarator(declarator.loc, *declarator.function, true);
- }
- } else {
- // A variable declaration.
- // merge in the attributes, the first time around, into the shared type
- if (! declarator_list)
- parseContext.transferTypeAttributes(token.loc, declarator.attributes, declaredType);
- // Fix the storage qualifier if it's a global.
- if (declaredType.getQualifier().storage == EvqTemporary && parseContext.symbolTable.atGlobalLevel())
- declaredType.getQualifier().storage = EvqUniform;
- // recognize array_specifier
- TArraySizes* arraySizes = nullptr;
- acceptArraySpecifier(arraySizes);
- // We can handle multiple variables per type declaration, so
- // the number of types can expand when arrayness is different.
- TType variableType;
- variableType.shallowCopy(declaredType);
- // In the most general case, arrayness is potentially coming both from the
- // declared type and from the variable: "int[] a[];" or just one or the other.
- // Merge it all to the variableType, so all arrayness is part of the variableType.
- variableType.transferArraySizes(arraySizes);
- variableType.copyArrayInnerSizes(declaredType.getArraySizes());
- // samplers accept immediate sampler state
- if (variableType.getBasicType() == EbtSampler) {
- if (! acceptSamplerState())
- return false;
- }
- // post_decls
- acceptPostDecls(variableType.getQualifier());
- // EQUAL assignment_expression
- TIntermTyped* expressionNode = nullptr;
- if (acceptTokenClass(EHTokAssign)) {
- if (typedefDecl)
- parseContext.error(idToken.loc, "can't have an initializer", "typedef", "");
- if (! acceptAssignmentExpression(expressionNode)) {
- expected("initializer");
- return false;
- }
- }
- // TODO: things scoped within an annotation need their own name space;
- // TODO: strings are not yet handled.
- if (variableType.getBasicType() != EbtString && parseContext.getAnnotationNestingLevel() == 0) {
- if (typedefDecl)
- parseContext.declareTypedef(idToken.loc, *fullName, variableType);
- else if (variableType.getBasicType() == EbtBlock) {
- if (expressionNode)
- parseContext.error(idToken.loc, "buffer aliasing not yet supported", "block initializer", "");
- parseContext.declareBlock(idToken.loc, variableType, fullName);
- parseContext.declareStructBufferCounter(idToken.loc, variableType, *fullName);
- } else {
- if (variableType.getQualifier().storage == EvqUniform && ! variableType.containsOpaque()) {
- // this isn't really an individual variable, but a member of the $Global buffer
- parseContext.growGlobalUniformBlock(idToken.loc, variableType, *fullName);
- } else {
- // Declare the variable and add any initializer code to the AST.
- // The top-level node is always made into an aggregate, as that's
- // historically how the AST has been.
- initializers = intermediate.growAggregate(initializers,
- parseContext.declareVariable(idToken.loc, *fullName, variableType, expressionNode),
- idToken.loc);
- }
- }
- }
- }
- // COMMA
- if (acceptTokenClass(EHTokComma))
- declarator_list = true;
- }
- // The top-level initializer node is a sequence.
- if (initializers != nullptr)
- initializers->setOperator(EOpSequence);
- // if we have a locally scoped static, it needs a globally scoped initializer
- if (declaredType.getQualifier().storage == EvqGlobal && !parseContext.symbolTable.atGlobalLevel()) {
- unitNode = intermediate.growAggregate(unitNode, initializers, idToken.loc);
- } else {
- // Add the initializers' aggregate to the nodeList we were handed.
- if (nodeList)
- nodeList = intermediate.growAggregate(nodeList, initializers);
- else
- nodeList = initializers;
- }
- // SEMICOLON
- if (! acceptTokenClass(EHTokSemicolon)) {
- // This may have been a false detection of what appeared to be a declaration, but
- // was actually an assignment such as "float = 4", where "float" is an identifier.
- // We put the token back to let further parsing happen for cases where that may
- // happen. This errors on the side of caution, and mostly triggers the error.
- if (peek() == EHTokAssign || peek() == EHTokLeftBracket || peek() == EHTokDot || peek() == EHTokComma)
- recedeToken();
- else
- expected(";");
- return false;
- }
- return true;
- }
- // control_declaration
- // : fully_specified_type identifier EQUAL expression
- //
- bool HlslGrammar::acceptControlDeclaration(TIntermNode*& node)
- {
- node = nullptr;
- TAttributes attributes;
- // fully_specified_type
- TType type;
- if (! acceptFullySpecifiedType(type, attributes))
- return false;
- if (attributes.size() > 0)
- parseContext.warn(token.loc, "attributes don't apply to control declaration", "", "");
- // filter out type casts
- if (peekTokenClass(EHTokLeftParen)) {
- recedeToken();
- return false;
- }
- // identifier
- HlslToken idToken;
- if (! acceptIdentifier(idToken)) {
- expected("identifier");
- return false;
- }
- // EQUAL
- TIntermTyped* expressionNode = nullptr;
- if (! acceptTokenClass(EHTokAssign)) {
- expected("=");
- return false;
- }
- // expression
- if (! acceptExpression(expressionNode)) {
- expected("initializer");
- return false;
- }
- node = parseContext.declareVariable(idToken.loc, *idToken.string, type, expressionNode);
- return true;
- }
- // fully_specified_type
- // : type_specifier
- // | type_qualifier type_specifier
- //
- bool HlslGrammar::acceptFullySpecifiedType(TType& type, const TAttributes& attributes)
- {
- TIntermNode* nodeList = nullptr;
- return acceptFullySpecifiedType(type, nodeList, attributes);
- }
- bool HlslGrammar::acceptFullySpecifiedType(TType& type, TIntermNode*& nodeList, const TAttributes& attributes, bool forbidDeclarators)
- {
- // type_qualifier
- TQualifier qualifier;
- qualifier.clear();
- if (! acceptQualifier(qualifier))
- return false;
- TSourceLoc loc = token.loc;
- // type_specifier
- if (! acceptType(type, nodeList)) {
- // If this is not a type, we may have inadvertently gone down a wrong path
- // by parsing "sample", which can be treated like either an identifier or a
- // qualifier. Back it out, if we did.
- if (qualifier.sample)
- recedeToken();
- return false;
- }
- if (type.getBasicType() == EbtBlock) {
- // the type was a block, which set some parts of the qualifier
- parseContext.mergeQualifiers(type.getQualifier(), qualifier);
-
- // merge in the attributes
- parseContext.transferTypeAttributes(token.loc, attributes, type);
- // further, it can create an anonymous instance of the block
- // (cbuffer and tbuffer don't consume the next identifier, and
- // should set forbidDeclarators)
- if (forbidDeclarators || peek() != EHTokIdentifier)
- parseContext.declareBlock(loc, type);
- } else {
- // Some qualifiers are set when parsing the type. Merge those with
- // whatever comes from acceptQualifier.
- assert(qualifier.layoutFormat == ElfNone);
- qualifier.layoutFormat = type.getQualifier().layoutFormat;
- qualifier.precision = type.getQualifier().precision;
- if (type.getQualifier().storage == EvqOut ||
- type.getQualifier().storage == EvqBuffer) {
- qualifier.storage = type.getQualifier().storage;
- qualifier.readonly = type.getQualifier().readonly;
- }
- if (type.isBuiltIn())
- qualifier.builtIn = type.getQualifier().builtIn;
- type.getQualifier() = qualifier;
- }
- return true;
- }
- // type_qualifier
- // : qualifier qualifier ...
- //
- // Zero or more of these, so this can't return false.
- //
- bool HlslGrammar::acceptQualifier(TQualifier& qualifier)
- {
- do {
- switch (peek()) {
- case EHTokStatic:
- qualifier.storage = EvqGlobal;
- break;
- case EHTokExtern:
- // TODO: no meaning in glslang?
- break;
- case EHTokShared:
- // TODO: hint
- break;
- case EHTokGroupShared:
- qualifier.storage = EvqShared;
- break;
- case EHTokUniform:
- qualifier.storage = EvqUniform;
- break;
- case EHTokConst:
- qualifier.storage = EvqConst;
- break;
- case EHTokVolatile:
- qualifier.volatil = true;
- break;
- case EHTokLinear:
- qualifier.smooth = true;
- break;
- case EHTokCentroid:
- qualifier.centroid = true;
- break;
- case EHTokNointerpolation:
- qualifier.flat = true;
- break;
- case EHTokNoperspective:
- qualifier.nopersp = true;
- break;
- case EHTokSample:
- qualifier.sample = true;
- break;
- case EHTokRowMajor:
- qualifier.layoutMatrix = ElmColumnMajor;
- break;
- case EHTokColumnMajor:
- qualifier.layoutMatrix = ElmRowMajor;
- break;
- case EHTokPrecise:
- qualifier.noContraction = true;
- break;
- case EHTokIn:
- qualifier.storage = (qualifier.storage == EvqOut) ? EvqInOut : EvqIn;
- break;
- case EHTokOut:
- qualifier.storage = (qualifier.storage == EvqIn) ? EvqInOut : EvqOut;
- break;
- case EHTokInOut:
- qualifier.storage = EvqInOut;
- break;
- case EHTokLayout:
- if (! acceptLayoutQualifierList(qualifier))
- return false;
- continue;
- case EHTokGloballyCoherent:
- qualifier.coherent = true;
- break;
- case EHTokInline:
- // TODO: map this to SPIR-V function control
- break;
- // GS geometries: these are specified on stage input variables, and are an error (not verified here)
- // for output variables.
- case EHTokPoint:
- qualifier.storage = EvqIn;
- if (!parseContext.handleInputGeometry(token.loc, ElgPoints))
- return false;
- break;
- case EHTokLine:
- qualifier.storage = EvqIn;
- if (!parseContext.handleInputGeometry(token.loc, ElgLines))
- return false;
- break;
- case EHTokTriangle:
- qualifier.storage = EvqIn;
- if (!parseContext.handleInputGeometry(token.loc, ElgTriangles))
- return false;
- break;
- case EHTokLineAdj:
- qualifier.storage = EvqIn;
- if (!parseContext.handleInputGeometry(token.loc, ElgLinesAdjacency))
- return false;
- break;
- case EHTokTriangleAdj:
- qualifier.storage = EvqIn;
- if (!parseContext.handleInputGeometry(token.loc, ElgTrianglesAdjacency))
- return false;
- break;
- default:
- return true;
- }
- advanceToken();
- } while (true);
- }
- // layout_qualifier_list
- // : LAYOUT LEFT_PAREN layout_qualifier COMMA layout_qualifier ... RIGHT_PAREN
- //
- // layout_qualifier
- // : identifier
- // | identifier EQUAL expression
- //
- // Zero or more of these, so this can't return false.
- //
- bool HlslGrammar::acceptLayoutQualifierList(TQualifier& qualifier)
- {
- if (! acceptTokenClass(EHTokLayout))
- return false;
- // LEFT_PAREN
- if (! acceptTokenClass(EHTokLeftParen))
- return false;
- do {
- // identifier
- HlslToken idToken;
- if (! acceptIdentifier(idToken))
- break;
- // EQUAL expression
- if (acceptTokenClass(EHTokAssign)) {
- TIntermTyped* expr;
- if (! acceptConditionalExpression(expr)) {
- expected("expression");
- return false;
- }
- parseContext.setLayoutQualifier(idToken.loc, qualifier, *idToken.string, expr);
- } else
- parseContext.setLayoutQualifier(idToken.loc, qualifier, *idToken.string);
- // COMMA
- if (! acceptTokenClass(EHTokComma))
- break;
- } while (true);
- // RIGHT_PAREN
- if (! acceptTokenClass(EHTokRightParen)) {
- expected(")");
- return false;
- }
- return true;
- }
- // template_type
- // : FLOAT
- // | DOUBLE
- // | INT
- // | DWORD
- // | UINT
- // | BOOL
- //
- bool HlslGrammar::acceptTemplateVecMatBasicType(TBasicType& basicType)
- {
- switch (peek()) {
- case EHTokFloat:
- basicType = EbtFloat;
- break;
- case EHTokDouble:
- basicType = EbtDouble;
- break;
- case EHTokInt:
- case EHTokDword:
- basicType = EbtInt;
- break;
- case EHTokUint:
- basicType = EbtUint;
- break;
- case EHTokBool:
- basicType = EbtBool;
- break;
- default:
- return false;
- }
- advanceToken();
- return true;
- }
- // vector_template_type
- // : VECTOR
- // | VECTOR LEFT_ANGLE template_type COMMA integer_literal RIGHT_ANGLE
- //
- bool HlslGrammar::acceptVectorTemplateType(TType& type)
- {
- if (! acceptTokenClass(EHTokVector))
- return false;
- if (! acceptTokenClass(EHTokLeftAngle)) {
- // in HLSL, 'vector' alone means float4.
- new(&type) TType(EbtFloat, EvqTemporary, 4);
- return true;
- }
- TBasicType basicType;
- if (! acceptTemplateVecMatBasicType(basicType)) {
- expected("scalar type");
- return false;
- }
- // COMMA
- if (! acceptTokenClass(EHTokComma)) {
- expected(",");
- return false;
- }
- // integer
- if (! peekTokenClass(EHTokIntConstant)) {
- expected("literal integer");
- return false;
- }
- TIntermTyped* vecSize;
- if (! acceptLiteral(vecSize))
- return false;
- const int vecSizeI = vecSize->getAsConstantUnion()->getConstArray()[0].getIConst();
- new(&type) TType(basicType, EvqTemporary, vecSizeI);
- if (vecSizeI == 1)
- type.makeVector();
- if (!acceptTokenClass(EHTokRightAngle)) {
- expected("right angle bracket");
- return false;
- }
- return true;
- }
- // matrix_template_type
- // : MATRIX
- // | MATRIX LEFT_ANGLE template_type COMMA integer_literal COMMA integer_literal RIGHT_ANGLE
- //
- bool HlslGrammar::acceptMatrixTemplateType(TType& type)
- {
- if (! acceptTokenClass(EHTokMatrix))
- return false;
- if (! acceptTokenClass(EHTokLeftAngle)) {
- // in HLSL, 'matrix' alone means float4x4.
- new(&type) TType(EbtFloat, EvqTemporary, 0, 4, 4);
- return true;
- }
- TBasicType basicType;
- if (! acceptTemplateVecMatBasicType(basicType)) {
- expected("scalar type");
- return false;
- }
- // COMMA
- if (! acceptTokenClass(EHTokComma)) {
- expected(",");
- return false;
- }
- // integer rows
- if (! peekTokenClass(EHTokIntConstant)) {
- expected("literal integer");
- return false;
- }
- TIntermTyped* rows;
- if (! acceptLiteral(rows))
- return false;
- // COMMA
- if (! acceptTokenClass(EHTokComma)) {
- expected(",");
- return false;
- }
- // integer cols
- if (! peekTokenClass(EHTokIntConstant)) {
- expected("literal integer");
- return false;
- }
- TIntermTyped* cols;
- if (! acceptLiteral(cols))
- return false;
- new(&type) TType(basicType, EvqTemporary, 0,
- rows->getAsConstantUnion()->getConstArray()[0].getIConst(),
- cols->getAsConstantUnion()->getConstArray()[0].getIConst());
- if (!acceptTokenClass(EHTokRightAngle)) {
- expected("right angle bracket");
- return false;
- }
- return true;
- }
- // layout_geometry
- // : LINESTREAM
- // | POINTSTREAM
- // | TRIANGLESTREAM
- //
- bool HlslGrammar::acceptOutputPrimitiveGeometry(TLayoutGeometry& geometry)
- {
- // read geometry type
- const EHlslTokenClass geometryType = peek();
- switch (geometryType) {
- case EHTokPointStream: geometry = ElgPoints; break;
- case EHTokLineStream: geometry = ElgLineStrip; break;
- case EHTokTriangleStream: geometry = ElgTriangleStrip; break;
- default:
- return false; // not a layout geometry
- }
- advanceToken(); // consume the layout keyword
- return true;
- }
- // tessellation_decl_type
- // : INPUTPATCH
- // | OUTPUTPATCH
- //
- bool HlslGrammar::acceptTessellationDeclType(TBuiltInVariable& patchType)
- {
- // read geometry type
- const EHlslTokenClass tessType = peek();
- switch (tessType) {
- case EHTokInputPatch: patchType = EbvInputPatch; break;
- case EHTokOutputPatch: patchType = EbvOutputPatch; break;
- default:
- return false; // not a tessellation decl
- }
- advanceToken(); // consume the keyword
- return true;
- }
- // tessellation_patch_template_type
- // : tessellation_decl_type LEFT_ANGLE type comma integer_literal RIGHT_ANGLE
- //
- bool HlslGrammar::acceptTessellationPatchTemplateType(TType& type)
- {
- TBuiltInVariable patchType;
- if (! acceptTessellationDeclType(patchType))
- return false;
-
- if (! acceptTokenClass(EHTokLeftAngle))
- return false;
- if (! acceptType(type)) {
- expected("tessellation patch type");
- return false;
- }
- if (! acceptTokenClass(EHTokComma))
- return false;
- // integer size
- if (! peekTokenClass(EHTokIntConstant)) {
- expected("literal integer");
- return false;
- }
- TIntermTyped* size;
- if (! acceptLiteral(size))
- return false;
- TArraySizes* arraySizes = new TArraySizes;
- arraySizes->addInnerSize(size->getAsConstantUnion()->getConstArray()[0].getIConst());
- type.transferArraySizes(arraySizes);
- type.getQualifier().builtIn = patchType;
- if (! acceptTokenClass(EHTokRightAngle)) {
- expected("right angle bracket");
- return false;
- }
- return true;
- }
-
- // stream_out_template_type
- // : output_primitive_geometry_type LEFT_ANGLE type RIGHT_ANGLE
- //
- bool HlslGrammar::acceptStreamOutTemplateType(TType& type, TLayoutGeometry& geometry)
- {
- geometry = ElgNone;
- if (! acceptOutputPrimitiveGeometry(geometry))
- return false;
- if (! acceptTokenClass(EHTokLeftAngle))
- return false;
- if (! acceptType(type)) {
- expected("stream output type");
- return false;
- }
- type.getQualifier().storage = EvqOut;
- type.getQualifier().builtIn = EbvGsOutputStream;
- if (! acceptTokenClass(EHTokRightAngle)) {
- expected("right angle bracket");
- return false;
- }
- return true;
- }
- // annotations
- // : LEFT_ANGLE declaration SEMI_COLON ... declaration SEMICOLON RIGHT_ANGLE
- //
- bool HlslGrammar::acceptAnnotations(TQualifier&)
- {
- if (! acceptTokenClass(EHTokLeftAngle))
- return false;
- // note that we are nesting a name space
- parseContext.nestAnnotations();
- // declaration SEMI_COLON ... declaration SEMICOLON RIGHT_ANGLE
- do {
- // eat any extra SEMI_COLON; don't know if the grammar calls for this or not
- while (acceptTokenClass(EHTokSemicolon))
- ;
- if (acceptTokenClass(EHTokRightAngle))
- break;
- // declaration
- TIntermNode* node = nullptr;
- if (! acceptDeclaration(node)) {
- expected("declaration in annotation");
- return false;
- }
- } while (true);
- parseContext.unnestAnnotations();
- return true;
- }
- // subpass input type
- // : SUBPASSINPUT
- // | SUBPASSINPUT VECTOR LEFT_ANGLE template_type RIGHT_ANGLE
- // | SUBPASSINPUTMS
- // | SUBPASSINPUTMS VECTOR LEFT_ANGLE template_type RIGHT_ANGLE
- bool HlslGrammar::acceptSubpassInputType(TType& type)
- {
- // read subpass type
- const EHlslTokenClass subpassInputType = peek();
- bool multisample;
- switch (subpassInputType) {
- case EHTokSubpassInput: multisample = false; break;
- case EHTokSubpassInputMS: multisample = true; break;
- default:
- return false; // not a subpass input declaration
- }
- advanceToken(); // consume the sampler type keyword
- TType subpassType(EbtFloat, EvqUniform, 4); // default type is float4
- if (acceptTokenClass(EHTokLeftAngle)) {
- if (! acceptType(subpassType)) {
- expected("scalar or vector type");
- return false;
- }
- const TBasicType basicRetType = subpassType.getBasicType() ;
- switch (basicRetType) {
- case EbtFloat:
- case EbtUint:
- case EbtInt:
- case EbtStruct:
- break;
- default:
- unimplemented("basic type in subpass input");
- return false;
- }
- if (! acceptTokenClass(EHTokRightAngle)) {
- expected("right angle bracket");
- return false;
- }
- }
- const TBasicType subpassBasicType = subpassType.isStruct() ? (*subpassType.getStruct())[0].type->getBasicType()
- : subpassType.getBasicType();
- TSampler sampler;
- sampler.setSubpass(subpassBasicType, multisample);
- // Remember the declared return type. Function returns false on error.
- if (!parseContext.setTextureReturnType(sampler, subpassType, token.loc))
- return false;
- type.shallowCopy(TType(sampler, EvqUniform));
- return true;
- }
- // sampler_type for DX9 compatibility
- // : SAMPLER
- // | SAMPLER1D
- // | SAMPLER2D
- // | SAMPLER3D
- // | SAMPLERCUBE
- bool HlslGrammar::acceptSamplerTypeDX9(TType &type)
- {
- // read sampler type
- const EHlslTokenClass samplerType = peek();
- TSamplerDim dim = EsdNone;
- TType txType(EbtFloat, EvqUniform, 4); // default type is float4
- bool isShadow = false;
- switch (samplerType)
- {
- case EHTokSampler: dim = Esd2D; break;
- case EHTokSampler1d: dim = Esd1D; break;
- case EHTokSampler2d: dim = Esd2D; break;
- case EHTokSampler3d: dim = Esd3D; break;
- case EHTokSamplerCube: dim = EsdCube; break;
- default:
- return false; // not a dx9 sampler declaration
- }
- advanceToken(); // consume the sampler type keyword
- TArraySizes *arraySizes = nullptr; // TODO: array
- TSampler sampler;
- sampler.set(txType.getBasicType(), dim, false, isShadow, false);
- if (!parseContext.setTextureReturnType(sampler, txType, token.loc))
- return false;
- type.shallowCopy(TType(sampler, EvqUniform, arraySizes));
- type.getQualifier().layoutFormat = ElfNone;
- return true;
- }
- // sampler_type
- // : SAMPLER
- // | SAMPLER1D
- // | SAMPLER2D
- // | SAMPLER3D
- // | SAMPLERCUBE
- // | SAMPLERSTATE
- // | SAMPLERCOMPARISONSTATE
- bool HlslGrammar::acceptSamplerType(TType& type)
- {
- // read sampler type
- const EHlslTokenClass samplerType = peek();
- // TODO: for DX9
- // TSamplerDim dim = EsdNone;
- bool isShadow = false;
- switch (samplerType) {
- case EHTokSampler: break;
- case EHTokSampler1d: /*dim = Esd1D*/; break;
- case EHTokSampler2d: /*dim = Esd2D*/; break;
- case EHTokSampler3d: /*dim = Esd3D*/; break;
- case EHTokSamplerCube: /*dim = EsdCube*/; break;
- case EHTokSamplerState: break;
- case EHTokSamplerComparisonState: isShadow = true; break;
- default:
- return false; // not a sampler declaration
- }
- advanceToken(); // consume the sampler type keyword
- TArraySizes* arraySizes = nullptr; // TODO: array
- TSampler sampler;
- sampler.setPureSampler(isShadow);
- type.shallowCopy(TType(sampler, EvqUniform, arraySizes));
- return true;
- }
- // texture_type
- // | BUFFER
- // | TEXTURE1D
- // | TEXTURE1DARRAY
- // | TEXTURE2D
- // | TEXTURE2DARRAY
- // | TEXTURE3D
- // | TEXTURECUBE
- // | TEXTURECUBEARRAY
- // | TEXTURE2DMS
- // | TEXTURE2DMSARRAY
- // | RWBUFFER
- // | RWTEXTURE1D
- // | RWTEXTURE1DARRAY
- // | RWTEXTURE2D
- // | RWTEXTURE2DARRAY
- // | RWTEXTURE3D
- bool HlslGrammar::acceptTextureType(TType& type)
- {
- const EHlslTokenClass textureType = peek();
- TSamplerDim dim = EsdNone;
- bool array = false;
- bool ms = false;
- bool image = false;
- bool combined = true;
- switch (textureType) {
- case EHTokBuffer: dim = EsdBuffer; combined = false; break;
- case EHTokTexture1d: dim = Esd1D; break;
- case EHTokTexture1darray: dim = Esd1D; array = true; break;
- case EHTokTexture2d: dim = Esd2D; break;
- case EHTokTexture2darray: dim = Esd2D; array = true; break;
- case EHTokTexture3d: dim = Esd3D; break;
- case EHTokTextureCube: dim = EsdCube; break;
- case EHTokTextureCubearray: dim = EsdCube; array = true; break;
- case EHTokTexture2DMS: dim = Esd2D; ms = true; break;
- case EHTokTexture2DMSarray: dim = Esd2D; array = true; ms = true; break;
- case EHTokRWBuffer: dim = EsdBuffer; image=true; break;
- case EHTokRWTexture1d: dim = Esd1D; array=false; image=true; break;
- case EHTokRWTexture1darray: dim = Esd1D; array=true; image=true; break;
- case EHTokRWTexture2d: dim = Esd2D; array=false; image=true; break;
- case EHTokRWTexture2darray: dim = Esd2D; array=true; image=true; break;
- case EHTokRWTexture3d: dim = Esd3D; array=false; image=true; break;
- default:
- return false; // not a texture declaration
- }
- advanceToken(); // consume the texture object keyword
- TType txType(EbtFloat, EvqUniform, 4); // default type is float4
- TIntermTyped* msCount = nullptr;
- // texture type: required for multisample types and RWBuffer/RWTextures!
- if (acceptTokenClass(EHTokLeftAngle)) {
- if (! acceptType(txType)) {
- expected("scalar or vector type");
- return false;
- }
- const TBasicType basicRetType = txType.getBasicType() ;
- switch (basicRetType) {
- case EbtFloat:
- case EbtUint:
- case EbtInt:
- case EbtStruct:
- break;
- default:
- unimplemented("basic type in texture");
- return false;
- }
- // Buffers can handle small mats if they fit in 4 components
- if (dim == EsdBuffer && txType.isMatrix()) {
- if ((txType.getMatrixCols() * txType.getMatrixRows()) > 4) {
- expected("components < 4 in matrix buffer type");
- return false;
- }
- // TODO: except we don't handle it yet...
- unimplemented("matrix type in buffer");
- return false;
- }
- if (!txType.isScalar() && !txType.isVector() && !txType.isStruct()) {
- expected("scalar, vector, or struct type");
- return false;
- }
- if (ms && acceptTokenClass(EHTokComma)) {
- // read sample count for multisample types, if given
- if (! peekTokenClass(EHTokIntConstant)) {
- expected("multisample count");
- return false;
- }
- if (! acceptLiteral(msCount)) // should never fail, since we just found an integer
- return false;
- }
- if (! acceptTokenClass(EHTokRightAngle)) {
- expected("right angle bracket");
- return false;
- }
- } else if (ms) {
- expected("texture type for multisample");
- return false;
- } else if (image) {
- expected("type for RWTexture/RWBuffer");
- return false;
- }
- TArraySizes* arraySizes = nullptr;
- const bool shadow = false; // declared on the sampler
- TSampler sampler;
- TLayoutFormat format = ElfNone;
- // Buffer, RWBuffer and RWTexture (images) require a TLayoutFormat. We handle only a limit set.
- if (image || dim == EsdBuffer)
- format = parseContext.getLayoutFromTxType(token.loc, txType);
- const TBasicType txBasicType = txType.isStruct() ? (*txType.getStruct())[0].type->getBasicType()
- : txType.getBasicType();
- // Non-image Buffers are combined
- if (dim == EsdBuffer && !image) {
- sampler.set(txType.getBasicType(), dim, array);
- } else {
- // DX10 textures are separated. TODO: DX9.
- if (image) {
- sampler.setImage(txBasicType, dim, array, shadow, ms);
- } else {
- sampler.setTexture(txBasicType, dim, array, shadow, ms);
- }
- }
- // Remember the declared return type. Function returns false on error.
- if (!parseContext.setTextureReturnType(sampler, txType, token.loc))
- return false;
- // Force uncombined, if necessary
- if (!combined)
- sampler.combined = false;
- type.shallowCopy(TType(sampler, EvqUniform, arraySizes));
- type.getQualifier().layoutFormat = format;
- return true;
- }
- // If token is for a type, update 'type' with the type information,
- // and return true and advance.
- // Otherwise, return false, and don't advance
- bool HlslGrammar::acceptType(TType& type)
- {
- TIntermNode* nodeList = nullptr;
- return acceptType(type, nodeList);
- }
- bool HlslGrammar::acceptType(TType& type, TIntermNode*& nodeList)
- {
- // Basic types for min* types, use native halfs if the option allows them.
- bool enable16BitTypes = parseContext.hlslEnable16BitTypes();
- const TBasicType min16float_bt = enable16BitTypes ? EbtFloat16 : EbtFloat;
- const TBasicType min10float_bt = enable16BitTypes ? EbtFloat16 : EbtFloat;
- const TBasicType half_bt = enable16BitTypes ? EbtFloat16 : EbtFloat;
- const TBasicType min16int_bt = enable16BitTypes ? EbtInt16 : EbtInt;
- const TBasicType min12int_bt = enable16BitTypes ? EbtInt16 : EbtInt;
- const TBasicType min16uint_bt = enable16BitTypes ? EbtUint16 : EbtUint;
- // Some types might have turned into identifiers. Take the hit for checking
- // when this has happened.
- if (typeIdentifiers) {
- const char* identifierString = getTypeString(peek());
- if (identifierString != nullptr) {
- TString name = identifierString;
- // if it's an identifier, it's not a type
- if (parseContext.symbolTable.find(name) != nullptr)
- return false;
- }
- }
- bool isUnorm = false;
- bool isSnorm = false;
- // Accept snorm and unorm. Presently, this is ignored, save for an error check below.
- switch (peek()) {
- case EHTokUnorm:
- isUnorm = true;
- advanceToken(); // eat the token
- break;
- case EHTokSNorm:
- isSnorm = true;
- advanceToken(); // eat the token
- break;
- default:
- break;
- }
- switch (peek()) {
- case EHTokVector:
- return acceptVectorTemplateType(type);
- break;
- case EHTokMatrix:
- return acceptMatrixTemplateType(type);
- break;
- case EHTokPointStream: // fall through
- case EHTokLineStream: // ...
- case EHTokTriangleStream: // ...
- {
- TLayoutGeometry geometry;
- if (! acceptStreamOutTemplateType(type, geometry))
- return false;
- if (! parseContext.handleOutputGeometry(token.loc, geometry))
- return false;
- return true;
- }
- case EHTokInputPatch: // fall through
- case EHTokOutputPatch: // ...
- {
- if (! acceptTessellationPatchTemplateType(type))
- return false;
- return true;
- }
- case EHTokSampler: // fall through
- case EHTokSampler1d: // ...
- case EHTokSampler2d: // ...
- case EHTokSampler3d: // ...
- case EHTokSamplerCube: // ...
- if (parseContext.hlslDX9Compatible())
- return acceptSamplerTypeDX9(type);
- else
- return acceptSamplerType(type);
- break;
- case EHTokSamplerState: // fall through
- case EHTokSamplerComparisonState: // ...
- return acceptSamplerType(type);
- break;
- case EHTokSubpassInput: // fall through
- case EHTokSubpassInputMS: // ...
- return acceptSubpassInputType(type);
- break;
- case EHTokBuffer: // fall through
- case EHTokTexture1d: // ...
- case EHTokTexture1darray: // ...
- case EHTokTexture2d: // ...
- case EHTokTexture2darray: // ...
- case EHTokTexture3d: // ...
- case EHTokTextureCube: // ...
- case EHTokTextureCubearray: // ...
- case EHTokTexture2DMS: // ...
- case EHTokTexture2DMSarray: // ...
- case EHTokRWTexture1d: // ...
- case EHTokRWTexture1darray: // ...
- case EHTokRWTexture2d: // ...
- case EHTokRWTexture2darray: // ...
- case EHTokRWTexture3d: // ...
- case EHTokRWBuffer: // ...
- return acceptTextureType(type);
- break;
- case EHTokAppendStructuredBuffer:
- case EHTokByteAddressBuffer:
- case EHTokConsumeStructuredBuffer:
- case EHTokRWByteAddressBuffer:
- case EHTokRWStructuredBuffer:
- case EHTokStructuredBuffer:
- return acceptStructBufferType(type);
- break;
- case EHTokTextureBuffer:
- return acceptTextureBufferType(type);
- break;
- case EHTokConstantBuffer:
- return acceptConstantBufferType(type);
- case EHTokClass:
- case EHTokStruct:
- case EHTokCBuffer:
- case EHTokTBuffer:
- return acceptStruct(type, nodeList);
- case EHTokIdentifier:
- // An identifier could be for a user-defined type.
- // Note we cache the symbol table lookup, to save for a later rule
- // when this is not a type.
- if (parseContext.lookupUserType(*token.string, type) != nullptr) {
- advanceToken();
- return true;
- } else
- return false;
- case EHTokVoid:
- new(&type) TType(EbtVoid);
- break;
- case EHTokString:
- new(&type) TType(EbtString);
- break;
- case EHTokFloat:
- new(&type) TType(EbtFloat);
- break;
- case EHTokFloat1:
- new(&type) TType(EbtFloat);
- type.makeVector();
- break;
- case EHTokFloat2:
- new(&type) TType(EbtFloat, EvqTemporary, 2);
- break;
- case EHTokFloat3:
- new(&type) TType(EbtFloat, EvqTemporary, 3);
- break;
- case EHTokFloat4:
- new(&type) TType(EbtFloat, EvqTemporary, 4);
- break;
- case EHTokDouble:
- new(&type) TType(EbtDouble);
- break;
- case EHTokDouble1:
- new(&type) TType(EbtDouble);
- type.makeVector();
- break;
- case EHTokDouble2:
- new(&type) TType(EbtDouble, EvqTemporary, 2);
- break;
- case EHTokDouble3:
- new(&type) TType(EbtDouble, EvqTemporary, 3);
- break;
- case EHTokDouble4:
- new(&type) TType(EbtDouble, EvqTemporary, 4);
- break;
- case EHTokInt:
- case EHTokDword:
- new(&type) TType(EbtInt);
- break;
- case EHTokInt1:
- new(&type) TType(EbtInt);
- type.makeVector();
- break;
- case EHTokInt2:
- new(&type) TType(EbtInt, EvqTemporary, 2);
- break;
- case EHTokInt3:
- new(&type) TType(EbtInt, EvqTemporary, 3);
- break;
- case EHTokInt4:
- new(&type) TType(EbtInt, EvqTemporary, 4);
- break;
- case EHTokUint:
- new(&type) TType(EbtUint);
- break;
- case EHTokUint1:
- new(&type) TType(EbtUint);
- type.makeVector();
- break;
- case EHTokUint2:
- new(&type) TType(EbtUint, EvqTemporary, 2);
- break;
- case EHTokUint3:
- new(&type) TType(EbtUint, EvqTemporary, 3);
- break;
- case EHTokUint4:
- new(&type) TType(EbtUint, EvqTemporary, 4);
- break;
- case EHTokUint64:
- new(&type) TType(EbtUint64);
- break;
- case EHTokBool:
- new(&type) TType(EbtBool);
- break;
- case EHTokBool1:
- new(&type) TType(EbtBool);
- type.makeVector();
- break;
- case EHTokBool2:
- new(&type) TType(EbtBool, EvqTemporary, 2);
- break;
- case EHTokBool3:
- new(&type) TType(EbtBool, EvqTemporary, 3);
- break;
- case EHTokBool4:
- new(&type) TType(EbtBool, EvqTemporary, 4);
- break;
- case EHTokHalf:
- new(&type) TType(half_bt, EvqTemporary);
- break;
- case EHTokHalf1:
- new(&type) TType(half_bt, EvqTemporary);
- type.makeVector();
- break;
- case EHTokHalf2:
- new(&type) TType(half_bt, EvqTemporary, 2);
- break;
- case EHTokHalf3:
- new(&type) TType(half_bt, EvqTemporary, 3);
- break;
- case EHTokHalf4:
- new(&type) TType(half_bt, EvqTemporary, 4);
- break;
- case EHTokMin16float:
- new(&type) TType(min16float_bt, EvqTemporary, EpqMedium);
- break;
- case EHTokMin16float1:
- new(&type) TType(min16float_bt, EvqTemporary, EpqMedium);
- type.makeVector();
- break;
- case EHTokMin16float2:
- new(&type) TType(min16float_bt, EvqTemporary, EpqMedium, 2);
- break;
- case EHTokMin16float3:
- new(&type) TType(min16float_bt, EvqTemporary, EpqMedium, 3);
- break;
- case EHTokMin16float4:
- new(&type) TType(min16float_bt, EvqTemporary, EpqMedium, 4);
- break;
- case EHTokMin10float:
- new(&type) TType(min10float_bt, EvqTemporary, EpqMedium);
- break;
- case EHTokMin10float1:
- new(&type) TType(min10float_bt, EvqTemporary, EpqMedium);
- type.makeVector();
- break;
- case EHTokMin10float2:
- new(&type) TType(min10float_bt, EvqTemporary, EpqMedium, 2);
- break;
- case EHTokMin10float3:
- new(&type) TType(min10float_bt, EvqTemporary, EpqMedium, 3);
- break;
- case EHTokMin10float4:
- new(&type) TType(min10float_bt, EvqTemporary, EpqMedium, 4);
- break;
- case EHTokMin16int:
- new(&type) TType(min16int_bt, EvqTemporary, EpqMedium);
- break;
- case EHTokMin16int1:
- new(&type) TType(min16int_bt, EvqTemporary, EpqMedium);
- type.makeVector();
- break;
- case EHTokMin16int2:
- new(&type) TType(min16int_bt, EvqTemporary, EpqMedium, 2);
- break;
- case EHTokMin16int3:
- new(&type) TType(min16int_bt, EvqTemporary, EpqMedium, 3);
- break;
- case EHTokMin16int4:
- new(&type) TType(min16int_bt, EvqTemporary, EpqMedium, 4);
- break;
- case EHTokMin12int:
- new(&type) TType(min12int_bt, EvqTemporary, EpqMedium);
- break;
- case EHTokMin12int1:
- new(&type) TType(min12int_bt, EvqTemporary, EpqMedium);
- type.makeVector();
- break;
- case EHTokMin12int2:
- new(&type) TType(min12int_bt, EvqTemporary, EpqMedium, 2);
- break;
- case EHTokMin12int3:
- new(&type) TType(min12int_bt, EvqTemporary, EpqMedium, 3);
- break;
- case EHTokMin12int4:
- new(&type) TType(min12int_bt, EvqTemporary, EpqMedium, 4);
- break;
- case EHTokMin16uint:
- new(&type) TType(min16uint_bt, EvqTemporary, EpqMedium);
- break;
- case EHTokMin16uint1:
- new(&type) TType(min16uint_bt, EvqTemporary, EpqMedium);
- type.makeVector();
- break;
- case EHTokMin16uint2:
- new(&type) TType(min16uint_bt, EvqTemporary, EpqMedium, 2);
- break;
- case EHTokMin16uint3:
- new(&type) TType(min16uint_bt, EvqTemporary, EpqMedium, 3);
- break;
- case EHTokMin16uint4:
- new(&type) TType(min16uint_bt, EvqTemporary, EpqMedium, 4);
- break;
- case EHTokInt1x1:
- new(&type) TType(EbtInt, EvqTemporary, 0, 1, 1);
- break;
- case EHTokInt1x2:
- new(&type) TType(EbtInt, EvqTemporary, 0, 1, 2);
- break;
- case EHTokInt1x3:
- new(&type) TType(EbtInt, EvqTemporary, 0, 1, 3);
- break;
- case EHTokInt1x4:
- new(&type) TType(EbtInt, EvqTemporary, 0, 1, 4);
- break;
- case EHTokInt2x1:
- new(&type) TType(EbtInt, EvqTemporary, 0, 2, 1);
- break;
- case EHTokInt2x2:
- new(&type) TType(EbtInt, EvqTemporary, 0, 2, 2);
- break;
- case EHTokInt2x3:
- new(&type) TType(EbtInt, EvqTemporary, 0, 2, 3);
- break;
- case EHTokInt2x4:
- new(&type) TType(EbtInt, EvqTemporary, 0, 2, 4);
- break;
- case EHTokInt3x1:
- new(&type) TType(EbtInt, EvqTemporary, 0, 3, 1);
- break;
- case EHTokInt3x2:
- new(&type) TType(EbtInt, EvqTemporary, 0, 3, 2);
- break;
- case EHTokInt3x3:
- new(&type) TType(EbtInt, EvqTemporary, 0, 3, 3);
- break;
- case EHTokInt3x4:
- new(&type) TType(EbtInt, EvqTemporary, 0, 3, 4);
- break;
- case EHTokInt4x1:
- new(&type) TType(EbtInt, EvqTemporary, 0, 4, 1);
- break;
- case EHTokInt4x2:
- new(&type) TType(EbtInt, EvqTemporary, 0, 4, 2);
- break;
- case EHTokInt4x3:
- new(&type) TType(EbtInt, EvqTemporary, 0, 4, 3);
- break;
- case EHTokInt4x4:
- new(&type) TType(EbtInt, EvqTemporary, 0, 4, 4);
- break;
- case EHTokUint1x1:
- new(&type) TType(EbtUint, EvqTemporary, 0, 1, 1);
- break;
- case EHTokUint1x2:
- new(&type) TType(EbtUint, EvqTemporary, 0, 1, 2);
- break;
- case EHTokUint1x3:
- new(&type) TType(EbtUint, EvqTemporary, 0, 1, 3);
- break;
- case EHTokUint1x4:
- new(&type) TType(EbtUint, EvqTemporary, 0, 1, 4);
- break;
- case EHTokUint2x1:
- new(&type) TType(EbtUint, EvqTemporary, 0, 2, 1);
- break;
- case EHTokUint2x2:
- new(&type) TType(EbtUint, EvqTemporary, 0, 2, 2);
- break;
- case EHTokUint2x3:
- new(&type) TType(EbtUint, EvqTemporary, 0, 2, 3);
- break;
- case EHTokUint2x4:
- new(&type) TType(EbtUint, EvqTemporary, 0, 2, 4);
- break;
- case EHTokUint3x1:
- new(&type) TType(EbtUint, EvqTemporary, 0, 3, 1);
- break;
- case EHTokUint3x2:
- new(&type) TType(EbtUint, EvqTemporary, 0, 3, 2);
- break;
- case EHTokUint3x3:
- new(&type) TType(EbtUint, EvqTemporary, 0, 3, 3);
- break;
- case EHTokUint3x4:
- new(&type) TType(EbtUint, EvqTemporary, 0, 3, 4);
- break;
- case EHTokUint4x1:
- new(&type) TType(EbtUint, EvqTemporary, 0, 4, 1);
- break;
- case EHTokUint4x2:
- new(&type) TType(EbtUint, EvqTemporary, 0, 4, 2);
- break;
- case EHTokUint4x3:
- new(&type) TType(EbtUint, EvqTemporary, 0, 4, 3);
- break;
- case EHTokUint4x4:
- new(&type) TType(EbtUint, EvqTemporary, 0, 4, 4);
- break;
- case EHTokBool1x1:
- new(&type) TType(EbtBool, EvqTemporary, 0, 1, 1);
- break;
- case EHTokBool1x2:
- new(&type) TType(EbtBool, EvqTemporary, 0, 1, 2);
- break;
- case EHTokBool1x3:
- new(&type) TType(EbtBool, EvqTemporary, 0, 1, 3);
- break;
- case EHTokBool1x4:
- new(&type) TType(EbtBool, EvqTemporary, 0, 1, 4);
- break;
- case EHTokBool2x1:
- new(&type) TType(EbtBool, EvqTemporary, 0, 2, 1);
- break;
- case EHTokBool2x2:
- new(&type) TType(EbtBool, EvqTemporary, 0, 2, 2);
- break;
- case EHTokBool2x3:
- new(&type) TType(EbtBool, EvqTemporary, 0, 2, 3);
- break;
- case EHTokBool2x4:
- new(&type) TType(EbtBool, EvqTemporary, 0, 2, 4);
- break;
- case EHTokBool3x1:
- new(&type) TType(EbtBool, EvqTemporary, 0, 3, 1);
- break;
- case EHTokBool3x2:
- new(&type) TType(EbtBool, EvqTemporary, 0, 3, 2);
- break;
- case EHTokBool3x3:
- new(&type) TType(EbtBool, EvqTemporary, 0, 3, 3);
- break;
- case EHTokBool3x4:
- new(&type) TType(EbtBool, EvqTemporary, 0, 3, 4);
- break;
- case EHTokBool4x1:
- new(&type) TType(EbtBool, EvqTemporary, 0, 4, 1);
- break;
- case EHTokBool4x2:
- new(&type) TType(EbtBool, EvqTemporary, 0, 4, 2);
- break;
- case EHTokBool4x3:
- new(&type) TType(EbtBool, EvqTemporary, 0, 4, 3);
- break;
- case EHTokBool4x4:
- new(&type) TType(EbtBool, EvqTemporary, 0, 4, 4);
- break;
- case EHTokFloat1x1:
- new(&type) TType(EbtFloat, EvqTemporary, 0, 1, 1);
- break;
- case EHTokFloat1x2:
- new(&type) TType(EbtFloat, EvqTemporary, 0, 1, 2);
- break;
- case EHTokFloat1x3:
- new(&type) TType(EbtFloat, EvqTemporary, 0, 1, 3);
- break;
- case EHTokFloat1x4:
- new(&type) TType(EbtFloat, EvqTemporary, 0, 1, 4);
- break;
- case EHTokFloat2x1:
- new(&type) TType(EbtFloat, EvqTemporary, 0, 2, 1);
- break;
- case EHTokFloat2x2:
- new(&type) TType(EbtFloat, EvqTemporary, 0, 2, 2);
- break;
- case EHTokFloat2x3:
- new(&type) TType(EbtFloat, EvqTemporary, 0, 2, 3);
- break;
- case EHTokFloat2x4:
- new(&type) TType(EbtFloat, EvqTemporary, 0, 2, 4);
- break;
- case EHTokFloat3x1:
- new(&type) TType(EbtFloat, EvqTemporary, 0, 3, 1);
- break;
- case EHTokFloat3x2:
- new(&type) TType(EbtFloat, EvqTemporary, 0, 3, 2);
- break;
- case EHTokFloat3x3:
- new(&type) TType(EbtFloat, EvqTemporary, 0, 3, 3);
- break;
- case EHTokFloat3x4:
- new(&type) TType(EbtFloat, EvqTemporary, 0, 3, 4);
- break;
- case EHTokFloat4x1:
- new(&type) TType(EbtFloat, EvqTemporary, 0, 4, 1);
- break;
- case EHTokFloat4x2:
- new(&type) TType(EbtFloat, EvqTemporary, 0, 4, 2);
- break;
- case EHTokFloat4x3:
- new(&type) TType(EbtFloat, EvqTemporary, 0, 4, 3);
- break;
- case EHTokFloat4x4:
- new(&type) TType(EbtFloat, EvqTemporary, 0, 4, 4);
- break;
- case EHTokHalf1x1:
- new(&type) TType(half_bt, EvqTemporary, 0, 1, 1);
- break;
- case EHTokHalf1x2:
- new(&type) TType(half_bt, EvqTemporary, 0, 1, 2);
- break;
- case EHTokHalf1x3:
- new(&type) TType(half_bt, EvqTemporary, 0, 1, 3);
- break;
- case EHTokHalf1x4:
- new(&type) TType(half_bt, EvqTemporary, 0, 1, 4);
- break;
- case EHTokHalf2x1:
- new(&type) TType(half_bt, EvqTemporary, 0, 2, 1);
- break;
- case EHTokHalf2x2:
- new(&type) TType(half_bt, EvqTemporary, 0, 2, 2);
- break;
- case EHTokHalf2x3:
- new(&type) TType(half_bt, EvqTemporary, 0, 2, 3);
- break;
- case EHTokHalf2x4:
- new(&type) TType(half_bt, EvqTemporary, 0, 2, 4);
- break;
- case EHTokHalf3x1:
- new(&type) TType(half_bt, EvqTemporary, 0, 3, 1);
- break;
- case EHTokHalf3x2:
- new(&type) TType(half_bt, EvqTemporary, 0, 3, 2);
- break;
- case EHTokHalf3x3:
- new(&type) TType(half_bt, EvqTemporary, 0, 3, 3);
- break;
- case EHTokHalf3x4:
- new(&type) TType(half_bt, EvqTemporary, 0, 3, 4);
- break;
- case EHTokHalf4x1:
- new(&type) TType(half_bt, EvqTemporary, 0, 4, 1);
- break;
- case EHTokHalf4x2:
- new(&type) TType(half_bt, EvqTemporary, 0, 4, 2);
- break;
- case EHTokHalf4x3:
- new(&type) TType(half_bt, EvqTemporary, 0, 4, 3);
- break;
- case EHTokHalf4x4:
- new(&type) TType(half_bt, EvqTemporary, 0, 4, 4);
- break;
- case EHTokDouble1x1:
- new(&type) TType(EbtDouble, EvqTemporary, 0, 1, 1);
- break;
- case EHTokDouble1x2:
- new(&type) TType(EbtDouble, EvqTemporary, 0, 1, 2);
- break;
- case EHTokDouble1x3:
- new(&type) TType(EbtDouble, EvqTemporary, 0, 1, 3);
- break;
- case EHTokDouble1x4:
- new(&type) TType(EbtDouble, EvqTemporary, 0, 1, 4);
- break;
- case EHTokDouble2x1:
- new(&type) TType(EbtDouble, EvqTemporary, 0, 2, 1);
- break;
- case EHTokDouble2x2:
- new(&type) TType(EbtDouble, EvqTemporary, 0, 2, 2);
- break;
- case EHTokDouble2x3:
- new(&type) TType(EbtDouble, EvqTemporary, 0, 2, 3);
- break;
- case EHTokDouble2x4:
- new(&type) TType(EbtDouble, EvqTemporary, 0, 2, 4);
- break;
- case EHTokDouble3x1:
- new(&type) TType(EbtDouble, EvqTemporary, 0, 3, 1);
- break;
- case EHTokDouble3x2:
- new(&type) TType(EbtDouble, EvqTemporary, 0, 3, 2);
- break;
- case EHTokDouble3x3:
- new(&type) TType(EbtDouble, EvqTemporary, 0, 3, 3);
- break;
- case EHTokDouble3x4:
- new(&type) TType(EbtDouble, EvqTemporary, 0, 3, 4);
- break;
- case EHTokDouble4x1:
- new(&type) TType(EbtDouble, EvqTemporary, 0, 4, 1);
- break;
- case EHTokDouble4x2:
- new(&type) TType(EbtDouble, EvqTemporary, 0, 4, 2);
- break;
- case EHTokDouble4x3:
- new(&type) TType(EbtDouble, EvqTemporary, 0, 4, 3);
- break;
- case EHTokDouble4x4:
- new(&type) TType(EbtDouble, EvqTemporary, 0, 4, 4);
- break;
- default:
- return false;
- }
- advanceToken();
- if ((isUnorm || isSnorm) && !type.isFloatingDomain()) {
- parseContext.error(token.loc, "unorm and snorm only valid in floating point domain", "", "");
- return false;
- }
- return true;
- }
- // struct
- // : struct_type IDENTIFIER post_decls LEFT_BRACE struct_declaration_list RIGHT_BRACE
- // | struct_type post_decls LEFT_BRACE struct_declaration_list RIGHT_BRACE
- // | struct_type IDENTIFIER // use of previously declared struct type
- //
- // struct_type
- // : STRUCT
- // | CLASS
- // | CBUFFER
- // | TBUFFER
- //
- bool HlslGrammar::acceptStruct(TType& type, TIntermNode*& nodeList)
- {
- // This storage qualifier will tell us whether it's an AST
- // block type or just a generic structure type.
- TStorageQualifier storageQualifier = EvqTemporary;
- bool readonly = false;
- if (acceptTokenClass(EHTokCBuffer)) {
- // CBUFFER
- storageQualifier = EvqUniform;
- } else if (acceptTokenClass(EHTokTBuffer)) {
- // TBUFFER
- storageQualifier = EvqBuffer;
- readonly = true;
- } else if (! acceptTokenClass(EHTokClass) && ! acceptTokenClass(EHTokStruct)) {
- // Neither CLASS nor STRUCT
- return false;
- }
- // Now known to be one of CBUFFER, TBUFFER, CLASS, or STRUCT
- // IDENTIFIER. It might also be a keyword which can double as an identifier.
- // For example: 'cbuffer ConstantBuffer' or 'struct ConstantBuffer' is legal.
- // 'cbuffer int' is also legal, and 'struct int' appears rejected only because
- // it attempts to redefine the 'int' type.
- const char* idString = getTypeString(peek());
- TString structName = "";
- if (peekTokenClass(EHTokIdentifier) || idString != nullptr) {
- if (idString != nullptr)
- structName = *idString;
- else
- structName = *token.string;
- advanceToken();
- }
- // post_decls
- TQualifier postDeclQualifier;
- postDeclQualifier.clear();
- bool postDeclsFound = acceptPostDecls(postDeclQualifier);
- // LEFT_BRACE, or
- // struct_type IDENTIFIER
- if (! acceptTokenClass(EHTokLeftBrace)) {
- if (structName.size() > 0 && !postDeclsFound && parseContext.lookupUserType(structName, type) != nullptr) {
- // struct_type IDENTIFIER
- return true;
- } else {
- expected("{");
- return false;
- }
- }
- // struct_declaration_list
- TTypeList* typeList;
- // Save each member function so they can be processed after we have a fully formed 'this'.
- TVector<TFunctionDeclarator> functionDeclarators;
- parseContext.pushNamespace(structName);
- bool acceptedList = acceptStructDeclarationList(typeList, nodeList, functionDeclarators);
- parseContext.popNamespace();
- if (! acceptedList) {
- expected("struct member declarations");
- return false;
- }
- // RIGHT_BRACE
- if (! acceptTokenClass(EHTokRightBrace)) {
- expected("}");
- return false;
- }
- // create the user-defined type
- if (storageQualifier == EvqTemporary)
- new(&type) TType(typeList, structName);
- else {
- postDeclQualifier.storage = storageQualifier;
- postDeclQualifier.readonly = readonly;
- new(&type) TType(typeList, structName, postDeclQualifier); // sets EbtBlock
- }
- parseContext.declareStruct(token.loc, structName, type);
- // For member functions: now that we know the type of 'this', go back and
- // - add their implicit argument with 'this' (not to the mangling, just the argument list)
- // - parse the functions, their tokens were saved for deferred parsing (now)
- for (int b = 0; b < (int)functionDeclarators.size(); ++b) {
- // update signature
- if (functionDeclarators[b].function->hasImplicitThis())
- functionDeclarators[b].function->addThisParameter(type, intermediate.implicitThisName);
- }
- // All member functions get parsed inside the class/struct namespace and with the
- // class/struct members in a symbol-table level.
- parseContext.pushNamespace(structName);
- parseContext.pushThisScope(type, functionDeclarators);
- bool deferredSuccess = true;
- for (int b = 0; b < (int)functionDeclarators.size() && deferredSuccess; ++b) {
- // parse body
- pushTokenStream(functionDeclarators[b].body);
- if (! acceptFunctionBody(functionDeclarators[b], nodeList))
- deferredSuccess = false;
- popTokenStream();
- }
- parseContext.popThisScope();
- parseContext.popNamespace();
- return deferredSuccess;
- }
- // constantbuffer
- // : CONSTANTBUFFER LEFT_ANGLE type RIGHT_ANGLE
- bool HlslGrammar::acceptConstantBufferType(TType& type)
- {
- if (! acceptTokenClass(EHTokConstantBuffer))
- return false;
- if (! acceptTokenClass(EHTokLeftAngle)) {
- expected("left angle bracket");
- return false;
- }
-
- TType templateType;
- if (! acceptType(templateType)) {
- expected("type");
- return false;
- }
- if (! acceptTokenClass(EHTokRightAngle)) {
- expected("right angle bracket");
- return false;
- }
- TQualifier postDeclQualifier;
- postDeclQualifier.clear();
- postDeclQualifier.storage = EvqUniform;
- if (templateType.isStruct()) {
- // Make a block from the type parsed as the template argument
- TTypeList* typeList = templateType.getWritableStruct();
- new(&type) TType(typeList, "", postDeclQualifier); // sets EbtBlock
- type.getQualifier().storage = EvqUniform;
- return true;
- } else {
- parseContext.error(token.loc, "non-structure type in ConstantBuffer", "", "");
- return false;
- }
- }
- // texture_buffer
- // : TEXTUREBUFFER LEFT_ANGLE type RIGHT_ANGLE
- bool HlslGrammar::acceptTextureBufferType(TType& type)
- {
- if (! acceptTokenClass(EHTokTextureBuffer))
- return false;
- if (! acceptTokenClass(EHTokLeftAngle)) {
- expected("left angle bracket");
- return false;
- }
-
- TType templateType;
- if (! acceptType(templateType)) {
- expected("type");
- return false;
- }
- if (! acceptTokenClass(EHTokRightAngle)) {
- expected("right angle bracket");
- return false;
- }
- templateType.getQualifier().storage = EvqBuffer;
- templateType.getQualifier().readonly = true;
- TType blockType(templateType.getWritableStruct(), "", templateType.getQualifier());
- blockType.getQualifier().storage = EvqBuffer;
- blockType.getQualifier().readonly = true;
- type.shallowCopy(blockType);
- return true;
- }
- // struct_buffer
- // : APPENDSTRUCTUREDBUFFER
- // | BYTEADDRESSBUFFER
- // | CONSUMESTRUCTUREDBUFFER
- // | RWBYTEADDRESSBUFFER
- // | RWSTRUCTUREDBUFFER
- // | STRUCTUREDBUFFER
- bool HlslGrammar::acceptStructBufferType(TType& type)
- {
- const EHlslTokenClass structBuffType = peek();
- // TODO: globallycoherent
- bool hasTemplateType = true;
- bool readonly = false;
- TStorageQualifier storage = EvqBuffer;
- TBuiltInVariable builtinType = EbvNone;
- switch (structBuffType) {
- case EHTokAppendStructuredBuffer:
- builtinType = EbvAppendConsume;
- break;
- case EHTokByteAddressBuffer:
- hasTemplateType = false;
- readonly = true;
- builtinType = EbvByteAddressBuffer;
- break;
- case EHTokConsumeStructuredBuffer:
- builtinType = EbvAppendConsume;
- break;
- case EHTokRWByteAddressBuffer:
- hasTemplateType = false;
- builtinType = EbvRWByteAddressBuffer;
- break;
- case EHTokRWStructuredBuffer:
- builtinType = EbvRWStructuredBuffer;
- break;
- case EHTokStructuredBuffer:
- builtinType = EbvStructuredBuffer;
- readonly = true;
- break;
- default:
- return false; // not a structure buffer type
- }
- advanceToken(); // consume the structure keyword
- // type on which this StructedBuffer is templatized. E.g, StructedBuffer<MyStruct> ==> MyStruct
- TType* templateType = new TType;
- if (hasTemplateType) {
- if (! acceptTokenClass(EHTokLeftAngle)) {
- expected("left angle bracket");
- return false;
- }
-
- if (! acceptType(*templateType)) {
- expected("type");
- return false;
- }
- if (! acceptTokenClass(EHTokRightAngle)) {
- expected("right angle bracket");
- return false;
- }
- } else {
- // byte address buffers have no explicit type.
- TType uintType(EbtUint, storage);
- templateType->shallowCopy(uintType);
- }
- // Create an unsized array out of that type.
- // TODO: does this work if it's already an array type?
- TArraySizes* unsizedArray = new TArraySizes;
- unsizedArray->addInnerSize(UnsizedArraySize);
- templateType->transferArraySizes(unsizedArray);
- templateType->getQualifier().storage = storage;
- // field name is canonical for all structbuffers
- templateType->setFieldName("@data");
- TTypeList* blockStruct = new TTypeList;
- TTypeLoc member = { templateType, token.loc };
- blockStruct->push_back(member);
- // This is the type of the buffer block (SSBO)
- TType blockType(blockStruct, "", templateType->getQualifier());
- blockType.getQualifier().storage = storage;
- blockType.getQualifier().readonly = readonly;
- blockType.getQualifier().builtIn = builtinType;
- // We may have created an equivalent type before, in which case we should use its
- // deep structure.
- parseContext.shareStructBufferType(blockType);
- type.shallowCopy(blockType);
- return true;
- }
- // struct_declaration_list
- // : struct_declaration SEMI_COLON struct_declaration SEMI_COLON ...
- //
- // struct_declaration
- // : attributes fully_specified_type struct_declarator COMMA struct_declarator ...
- // | attributes fully_specified_type IDENTIFIER function_parameters post_decls compound_statement // member-function definition
- //
- // struct_declarator
- // : IDENTIFIER post_decls
- // | IDENTIFIER array_specifier post_decls
- // | IDENTIFIER function_parameters post_decls // member-function prototype
- //
- bool HlslGrammar::acceptStructDeclarationList(TTypeList*& typeList, TIntermNode*& nodeList,
- TVector<TFunctionDeclarator>& declarators)
- {
- typeList = new TTypeList();
- HlslToken idToken;
- do {
- // success on seeing the RIGHT_BRACE coming up
- if (peekTokenClass(EHTokRightBrace))
- break;
- // struct_declaration
- // attributes
- TAttributes attributes;
- acceptAttributes(attributes);
- bool declarator_list = false;
- // fully_specified_type
- TType memberType;
- if (! acceptFullySpecifiedType(memberType, nodeList, attributes)) {
- expected("member type");
- return false;
- }
-
- // merge in the attributes
- parseContext.transferTypeAttributes(token.loc, attributes, memberType);
- // struct_declarator COMMA struct_declarator ...
- bool functionDefinitionAccepted = false;
- do {
- if (! acceptIdentifier(idToken)) {
- expected("member name");
- return false;
- }
- if (peekTokenClass(EHTokLeftParen)) {
- // function_parameters
- if (!declarator_list) {
- declarators.resize(declarators.size() + 1);
- // request a token stream for deferred processing
- functionDefinitionAccepted = acceptMemberFunctionDefinition(nodeList, memberType, *idToken.string,
- declarators.back());
- if (functionDefinitionAccepted)
- break;
- }
- expected("member-function definition");
- return false;
- } else {
- // add it to the list of members
- TTypeLoc member = { new TType(EbtVoid), token.loc };
- member.type->shallowCopy(memberType);
- member.type->setFieldName(*idToken.string);
- typeList->push_back(member);
- // array_specifier
- TArraySizes* arraySizes = nullptr;
- acceptArraySpecifier(arraySizes);
- if (arraySizes)
- typeList->back().type->transferArraySizes(arraySizes);
- acceptPostDecls(member.type->getQualifier());
- // EQUAL assignment_expression
- if (acceptTokenClass(EHTokAssign)) {
- parseContext.warn(idToken.loc, "struct-member initializers ignored", "typedef", "");
- TIntermTyped* expressionNode = nullptr;
- if (! acceptAssignmentExpression(expressionNode)) {
- expected("initializer");
- return false;
- }
- }
- }
- // success on seeing the SEMICOLON coming up
- if (peekTokenClass(EHTokSemicolon))
- break;
- // COMMA
- if (acceptTokenClass(EHTokComma))
- declarator_list = true;
- else {
- expected(",");
- return false;
- }
- } while (true);
- // SEMI_COLON
- if (! functionDefinitionAccepted && ! acceptTokenClass(EHTokSemicolon)) {
- expected(";");
- return false;
- }
- } while (true);
- return true;
- }
- // member_function_definition
- // | function_parameters post_decls compound_statement
- //
- // Expects type to have EvqGlobal for a static member and
- // EvqTemporary for non-static member.
- bool HlslGrammar::acceptMemberFunctionDefinition(TIntermNode*& nodeList, const TType& type, TString& memberName,
- TFunctionDeclarator& declarator)
- {
- bool accepted = false;
- TString* functionName = &memberName;
- parseContext.getFullNamespaceName(functionName);
- declarator.function = new TFunction(functionName, type);
- if (type.getQualifier().storage == EvqTemporary)
- declarator.function->setImplicitThis();
- else
- declarator.function->setIllegalImplicitThis();
- // function_parameters
- if (acceptFunctionParameters(*declarator.function)) {
- // post_decls
- acceptPostDecls(declarator.function->getWritableType().getQualifier());
- // compound_statement (function body definition)
- if (peekTokenClass(EHTokLeftBrace)) {
- declarator.loc = token.loc;
- declarator.body = new TVector<HlslToken>;
- accepted = acceptFunctionDefinition(declarator, nodeList, declarator.body);
- }
- } else
- expected("function parameter list");
- return accepted;
- }
- // function_parameters
- // : LEFT_PAREN parameter_declaration COMMA parameter_declaration ... RIGHT_PAREN
- // | LEFT_PAREN VOID RIGHT_PAREN
- //
- bool HlslGrammar::acceptFunctionParameters(TFunction& function)
- {
- // LEFT_PAREN
- if (! acceptTokenClass(EHTokLeftParen))
- return false;
- // VOID RIGHT_PAREN
- if (! acceptTokenClass(EHTokVoid)) {
- do {
- // parameter_declaration
- if (! acceptParameterDeclaration(function))
- break;
- // COMMA
- if (! acceptTokenClass(EHTokComma))
- break;
- } while (true);
- }
- // RIGHT_PAREN
- if (! acceptTokenClass(EHTokRightParen)) {
- expected(")");
- return false;
- }
- return true;
- }
- // default_parameter_declaration
- // : EQUAL conditional_expression
- // : EQUAL initializer
- bool HlslGrammar::acceptDefaultParameterDeclaration(const TType& type, TIntermTyped*& node)
- {
- node = nullptr;
- // Valid not to have a default_parameter_declaration
- if (!acceptTokenClass(EHTokAssign))
- return true;
- if (!acceptConditionalExpression(node)) {
- if (!acceptInitializer(node))
- return false;
- // For initializer lists, we have to const-fold into a constructor for the type, so build
- // that.
- TFunction* constructor = parseContext.makeConstructorCall(token.loc, type);
- if (constructor == nullptr) // cannot construct
- return false;
- TIntermTyped* arguments = nullptr;
- for (int i = 0; i < int(node->getAsAggregate()->getSequence().size()); i++)
- parseContext.handleFunctionArgument(constructor, arguments, node->getAsAggregate()->getSequence()[i]->getAsTyped());
- node = parseContext.handleFunctionCall(token.loc, constructor, node);
- }
- if (node == nullptr)
- return false;
- // If this is simply a constant, we can use it directly.
- if (node->getAsConstantUnion())
- return true;
- // Otherwise, it has to be const-foldable.
- TIntermTyped* origNode = node;
- node = intermediate.fold(node->getAsAggregate());
- if (node != nullptr && origNode != node)
- return true;
- parseContext.error(token.loc, "invalid default parameter value", "", "");
- return false;
- }
- // parameter_declaration
- // : attributes attributed_declaration
- //
- // attributed_declaration
- // : fully_specified_type post_decls [ = default_parameter_declaration ]
- // | fully_specified_type identifier array_specifier post_decls [ = default_parameter_declaration ]
- //
- bool HlslGrammar::acceptParameterDeclaration(TFunction& function)
- {
- // attributes
- TAttributes attributes;
- acceptAttributes(attributes);
- // fully_specified_type
- TType* type = new TType;
- if (! acceptFullySpecifiedType(*type, attributes))
- return false;
- // merge in the attributes
- parseContext.transferTypeAttributes(token.loc, attributes, *type);
- // identifier
- HlslToken idToken;
- acceptIdentifier(idToken);
- // array_specifier
- TArraySizes* arraySizes = nullptr;
- acceptArraySpecifier(arraySizes);
- if (arraySizes) {
- if (arraySizes->hasUnsized()) {
- parseContext.error(token.loc, "function parameter requires array size", "[]", "");
- return false;
- }
- type->transferArraySizes(arraySizes);
- }
- // post_decls
- acceptPostDecls(type->getQualifier());
- TIntermTyped* defaultValue;
- if (!acceptDefaultParameterDeclaration(*type, defaultValue))
- return false;
- parseContext.paramFix(*type);
- // If any prior parameters have default values, all the parameters after that must as well.
- if (defaultValue == nullptr && function.getDefaultParamCount() > 0) {
- parseContext.error(idToken.loc, "invalid parameter after default value parameters", idToken.string->c_str(), "");
- return false;
- }
- TParameter param = { idToken.string, type, defaultValue };
- function.addParameter(param);
- return true;
- }
- // Do the work to create the function definition in addition to
- // parsing the body (compound_statement).
- //
- // If 'deferredTokens' are passed in, just get the token stream,
- // don't process.
- //
- bool HlslGrammar::acceptFunctionDefinition(TFunctionDeclarator& declarator, TIntermNode*& nodeList,
- TVector<HlslToken>* deferredTokens)
- {
- parseContext.handleFunctionDeclarator(declarator.loc, *declarator.function, false /* not prototype */);
- if (deferredTokens)
- return captureBlockTokens(*deferredTokens);
- else
- return acceptFunctionBody(declarator, nodeList);
- }
- bool HlslGrammar::acceptFunctionBody(TFunctionDeclarator& declarator, TIntermNode*& nodeList)
- {
- // we might get back an entry-point
- TIntermNode* entryPointNode = nullptr;
- // This does a pushScope()
- TIntermNode* functionNode = parseContext.handleFunctionDefinition(declarator.loc, *declarator.function,
- declarator.attributes, entryPointNode);
- // compound_statement
- TIntermNode* functionBody = nullptr;
- if (! acceptCompoundStatement(functionBody))
- return false;
- // this does a popScope()
- parseContext.handleFunctionBody(declarator.loc, *declarator.function, functionBody, functionNode);
- // Hook up the 1 or 2 function definitions.
- nodeList = intermediate.growAggregate(nodeList, functionNode);
- nodeList = intermediate.growAggregate(nodeList, entryPointNode);
- return true;
- }
- // Accept an expression with parenthesis around it, where
- // the parenthesis ARE NOT expression parenthesis, but the
- // syntactically required ones like in "if ( expression )".
- //
- // Also accepts a declaration expression; "if (int a = expression)".
- //
- // Note this one is not set up to be speculative; as it gives
- // errors if not found.
- //
- bool HlslGrammar::acceptParenExpression(TIntermTyped*& expression)
- {
- expression = nullptr;
- // LEFT_PAREN
- if (! acceptTokenClass(EHTokLeftParen))
- expected("(");
- bool decl = false;
- TIntermNode* declNode = nullptr;
- decl = acceptControlDeclaration(declNode);
- if (decl) {
- if (declNode == nullptr || declNode->getAsTyped() == nullptr) {
- expected("initialized declaration");
- return false;
- } else
- expression = declNode->getAsTyped();
- } else {
- // no declaration
- if (! acceptExpression(expression)) {
- expected("expression");
- return false;
- }
- }
- // RIGHT_PAREN
- if (! acceptTokenClass(EHTokRightParen))
- expected(")");
- return true;
- }
- // The top-level full expression recognizer.
- //
- // expression
- // : assignment_expression COMMA assignment_expression COMMA assignment_expression ...
- //
- bool HlslGrammar::acceptExpression(TIntermTyped*& node)
- {
- node = nullptr;
- // assignment_expression
- if (! acceptAssignmentExpression(node))
- return false;
- if (! peekTokenClass(EHTokComma))
- return true;
- do {
- // ... COMMA
- TSourceLoc loc = token.loc;
- advanceToken();
- // ... assignment_expression
- TIntermTyped* rightNode = nullptr;
- if (! acceptAssignmentExpression(rightNode)) {
- expected("assignment expression");
- return false;
- }
- node = intermediate.addComma(node, rightNode, loc);
- if (! peekTokenClass(EHTokComma))
- return true;
- } while (true);
- }
- // initializer
- // : LEFT_BRACE RIGHT_BRACE
- // | LEFT_BRACE initializer_list RIGHT_BRACE
- //
- // initializer_list
- // : assignment_expression COMMA assignment_expression COMMA ...
- //
- bool HlslGrammar::acceptInitializer(TIntermTyped*& node)
- {
- // LEFT_BRACE
- if (! acceptTokenClass(EHTokLeftBrace))
- return false;
- // RIGHT_BRACE
- TSourceLoc loc = token.loc;
- if (acceptTokenClass(EHTokRightBrace)) {
- // a zero-length initializer list
- node = intermediate.makeAggregate(loc);
- return true;
- }
- // initializer_list
- node = nullptr;
- do {
- // assignment_expression
- TIntermTyped* expr;
- if (! acceptAssignmentExpression(expr)) {
- expected("assignment expression in initializer list");
- return false;
- }
- const bool firstNode = (node == nullptr);
- node = intermediate.growAggregate(node, expr, loc);
- // If every sub-node in the list has qualifier EvqConst, the returned node becomes
- // EvqConst. Otherwise, it becomes EvqTemporary. That doesn't happen with e.g.
- // EvqIn or EvqPosition, since the collection isn't EvqPosition if all the members are.
- if (firstNode && expr->getQualifier().storage == EvqConst)
- node->getQualifier().storage = EvqConst;
- else if (expr->getQualifier().storage != EvqConst)
- node->getQualifier().storage = EvqTemporary;
- // COMMA
- if (acceptTokenClass(EHTokComma)) {
- if (acceptTokenClass(EHTokRightBrace)) // allow trailing comma
- return true;
- continue;
- }
- // RIGHT_BRACE
- if (acceptTokenClass(EHTokRightBrace))
- return true;
- expected(", or }");
- return false;
- } while (true);
- }
- // Accept an assignment expression, where assignment operations
- // associate right-to-left. That is, it is implicit, for example
- //
- // a op (b op (c op d))
- //
- // assigment_expression
- // : initializer
- // | conditional_expression
- // | conditional_expression assign_op conditional_expression assign_op conditional_expression ...
- //
- bool HlslGrammar::acceptAssignmentExpression(TIntermTyped*& node)
- {
- // initializer
- if (peekTokenClass(EHTokLeftBrace)) {
- if (acceptInitializer(node))
- return true;
- expected("initializer");
- return false;
- }
- // conditional_expression
- if (! acceptConditionalExpression(node))
- return false;
- // assignment operation?
- TOperator assignOp = HlslOpMap::assignment(peek());
- if (assignOp == EOpNull)
- return true;
- // assign_op
- TSourceLoc loc = token.loc;
- advanceToken();
- // conditional_expression assign_op conditional_expression ...
- // Done by recursing this function, which automatically
- // gets the right-to-left associativity.
- TIntermTyped* rightNode = nullptr;
- if (! acceptAssignmentExpression(rightNode)) {
- expected("assignment expression");
- return false;
- }
- node = parseContext.handleAssign(loc, assignOp, node, rightNode);
- node = parseContext.handleLvalue(loc, "assign", node);
- if (node == nullptr) {
- parseContext.error(loc, "could not create assignment", "", "");
- return false;
- }
- if (! peekTokenClass(EHTokComma))
- return true;
- return true;
- }
- // Accept a conditional expression, which associates right-to-left,
- // accomplished by the "true" expression calling down to lower
- // precedence levels than this level.
- //
- // conditional_expression
- // : binary_expression
- // | binary_expression QUESTION expression COLON assignment_expression
- //
- bool HlslGrammar::acceptConditionalExpression(TIntermTyped*& node)
- {
- // binary_expression
- if (! acceptBinaryExpression(node, PlLogicalOr))
- return false;
- if (! acceptTokenClass(EHTokQuestion))
- return true;
- node = parseContext.convertConditionalExpression(token.loc, node, false);
- if (node == nullptr)
- return false;
- ++parseContext.controlFlowNestingLevel; // this only needs to work right if no errors
- TIntermTyped* trueNode = nullptr;
- if (! acceptExpression(trueNode)) {
- expected("expression after ?");
- return false;
- }
- TSourceLoc loc = token.loc;
- if (! acceptTokenClass(EHTokColon)) {
- expected(":");
- return false;
- }
- TIntermTyped* falseNode = nullptr;
- if (! acceptAssignmentExpression(falseNode)) {
- expected("expression after :");
- return false;
- }
- --parseContext.controlFlowNestingLevel;
- node = intermediate.addSelection(node, trueNode, falseNode, loc);
- return true;
- }
- // Accept a binary expression, for binary operations that
- // associate left-to-right. This is, it is implicit, for example
- //
- // ((a op b) op c) op d
- //
- // binary_expression
- // : expression op expression op expression ...
- //
- // where 'expression' is the next higher level in precedence.
- //
- bool HlslGrammar::acceptBinaryExpression(TIntermTyped*& node, PrecedenceLevel precedenceLevel)
- {
- if (precedenceLevel > PlMul)
- return acceptUnaryExpression(node);
- // assignment_expression
- if (! acceptBinaryExpression(node, (PrecedenceLevel)(precedenceLevel + 1)))
- return false;
- do {
- TOperator op = HlslOpMap::binary(peek());
- PrecedenceLevel tokenLevel = HlslOpMap::precedenceLevel(op);
- if (tokenLevel < precedenceLevel)
- return true;
- // ... op
- TSourceLoc loc = token.loc;
- advanceToken();
- // ... expression
- TIntermTyped* rightNode = nullptr;
- if (! acceptBinaryExpression(rightNode, (PrecedenceLevel)(precedenceLevel + 1))) {
- expected("expression");
- return false;
- }
- node = intermediate.addBinaryMath(op, node, rightNode, loc);
- if (node == nullptr) {
- parseContext.error(loc, "Could not perform requested binary operation", "", "");
- return false;
- }
- } while (true);
- }
- // unary_expression
- // : (type) unary_expression
- // | + unary_expression
- // | - unary_expression
- // | ! unary_expression
- // | ~ unary_expression
- // | ++ unary_expression
- // | -- unary_expression
- // | postfix_expression
- //
- bool HlslGrammar::acceptUnaryExpression(TIntermTyped*& node)
- {
- // (type) unary_expression
- // Have to look two steps ahead, because this could be, e.g., a
- // postfix_expression instead, since that also starts with at "(".
- if (acceptTokenClass(EHTokLeftParen)) {
- TType castType;
- if (acceptType(castType)) {
- // recognize any array_specifier as part of the type
- TArraySizes* arraySizes = nullptr;
- acceptArraySpecifier(arraySizes);
- if (arraySizes != nullptr)
- castType.transferArraySizes(arraySizes);
- TSourceLoc loc = token.loc;
- if (acceptTokenClass(EHTokRightParen)) {
- // We've matched "(type)" now, get the expression to cast
- if (! acceptUnaryExpression(node))
- return false;
- // Hook it up like a constructor
- TFunction* constructorFunction = parseContext.makeConstructorCall(loc, castType);
- if (constructorFunction == nullptr) {
- expected("type that can be constructed");
- return false;
- }
- TIntermTyped* arguments = nullptr;
- parseContext.handleFunctionArgument(constructorFunction, arguments, node);
- node = parseContext.handleFunctionCall(loc, constructorFunction, arguments);
- return node != nullptr;
- } else {
- // This could be a parenthesized constructor, ala (int(3)), and we just accepted
- // the '(int' part. We must back up twice.
- recedeToken();
- recedeToken();
- // Note, there are no array constructors like
- // (float[2](...))
- if (arraySizes != nullptr)
- parseContext.error(loc, "parenthesized array constructor not allowed", "([]())", "", "");
- }
- } else {
- // This isn't a type cast, but it still started "(", so if it is a
- // unary expression, it can only be a postfix_expression, so try that.
- // Back it up first.
- recedeToken();
- return acceptPostfixExpression(node);
- }
- }
- // peek for "op unary_expression"
- TOperator unaryOp = HlslOpMap::preUnary(peek());
- // postfix_expression (if no unary operator)
- if (unaryOp == EOpNull)
- return acceptPostfixExpression(node);
- // op unary_expression
- TSourceLoc loc = token.loc;
- advanceToken();
- if (! acceptUnaryExpression(node))
- return false;
- // + is a no-op
- if (unaryOp == EOpAdd)
- return true;
- node = intermediate.addUnaryMath(unaryOp, node, loc);
- // These unary ops require lvalues
- if (unaryOp == EOpPreIncrement || unaryOp == EOpPreDecrement)
- node = parseContext.handleLvalue(loc, "unary operator", node);
- return node != nullptr;
- }
- // postfix_expression
- // : LEFT_PAREN expression RIGHT_PAREN
- // | literal
- // | constructor
- // | IDENTIFIER [ COLONCOLON IDENTIFIER [ COLONCOLON IDENTIFIER ... ] ]
- // | function_call
- // | postfix_expression LEFT_BRACKET integer_expression RIGHT_BRACKET
- // | postfix_expression DOT IDENTIFIER
- // | postfix_expression DOT IDENTIFIER arguments
- // | postfix_expression arguments
- // | postfix_expression INC_OP
- // | postfix_expression DEC_OP
- //
- bool HlslGrammar::acceptPostfixExpression(TIntermTyped*& node)
- {
- // Not implemented as self-recursive:
- // The logical "right recursion" is done with a loop at the end
- // idToken will pick up either a variable or a function name in a function call
- HlslToken idToken;
- // Find something before the postfix operations, as they can't operate
- // on nothing. So, no "return true", they fall through, only "return false".
- if (acceptTokenClass(EHTokLeftParen)) {
- // LEFT_PAREN expression RIGHT_PAREN
- if (! acceptExpression(node)) {
- expected("expression");
- return false;
- }
- if (! acceptTokenClass(EHTokRightParen)) {
- expected(")");
- return false;
- }
- } else if (acceptLiteral(node)) {
- // literal (nothing else to do yet)
- } else if (acceptConstructor(node)) {
- // constructor (nothing else to do yet)
- } else if (acceptIdentifier(idToken)) {
- // user-type, namespace name, variable, or function name
- TString* fullName = idToken.string;
- while (acceptTokenClass(EHTokColonColon)) {
- // user-type or namespace name
- fullName = NewPoolTString(fullName->c_str());
- fullName->append(parseContext.scopeMangler);
- if (acceptIdentifier(idToken))
- fullName->append(*idToken.string);
- else {
- expected("identifier after ::");
- return false;
- }
- }
- if (! peekTokenClass(EHTokLeftParen)) {
- node = parseContext.handleVariable(idToken.loc, fullName);
- if (node == nullptr)
- return false;
- } else if (acceptFunctionCall(idToken.loc, *fullName, node, nullptr)) {
- // function_call (nothing else to do yet)
- } else {
- expected("function call arguments");
- return false;
- }
- } else {
- // nothing found, can't post operate
- return false;
- }
- // Something was found, chain as many postfix operations as exist.
- do {
- TSourceLoc loc = token.loc;
- TOperator postOp = HlslOpMap::postUnary(peek());
- // Consume only a valid post-unary operator, otherwise we are done.
- switch (postOp) {
- case EOpIndexDirectStruct:
- case EOpIndexIndirect:
- case EOpPostIncrement:
- case EOpPostDecrement:
- case EOpScoping:
- advanceToken();
- break;
- default:
- return true;
- }
- // We have a valid post-unary operator, process it.
- switch (postOp) {
- case EOpScoping:
- case EOpIndexDirectStruct:
- {
- // DOT IDENTIFIER
- // includes swizzles, member variables, and member functions
- HlslToken field;
- if (! acceptIdentifier(field)) {
- expected("swizzle or member");
- return false;
- }
- if (peekTokenClass(EHTokLeftParen)) {
- // member function
- TIntermTyped* thisNode = node;
- // arguments
- if (! acceptFunctionCall(field.loc, *field.string, node, thisNode)) {
- expected("function parameters");
- return false;
- }
- } else
- node = parseContext.handleDotDereference(field.loc, node, *field.string);
- break;
- }
- case EOpIndexIndirect:
- {
- // LEFT_BRACKET integer_expression RIGHT_BRACKET
- TIntermTyped* indexNode = nullptr;
- if (! acceptExpression(indexNode) ||
- ! peekTokenClass(EHTokRightBracket)) {
- expected("expression followed by ']'");
- return false;
- }
- advanceToken();
- node = parseContext.handleBracketDereference(indexNode->getLoc(), node, indexNode);
- if (node == nullptr)
- return false;
- break;
- }
- case EOpPostIncrement:
- // INC_OP
- // fall through
- case EOpPostDecrement:
- // DEC_OP
- node = intermediate.addUnaryMath(postOp, node, loc);
- node = parseContext.handleLvalue(loc, "unary operator", node);
- break;
- default:
- assert(0);
- break;
- }
- } while (true);
- }
- // constructor
- // : type argument_list
- //
- bool HlslGrammar::acceptConstructor(TIntermTyped*& node)
- {
- // type
- TType type;
- if (acceptType(type)) {
- TFunction* constructorFunction = parseContext.makeConstructorCall(token.loc, type);
- if (constructorFunction == nullptr)
- return false;
- // arguments
- TIntermTyped* arguments = nullptr;
- if (! acceptArguments(constructorFunction, arguments)) {
- // It's possible this is a type keyword used as an identifier. Put the token back
- // for later use.
- recedeToken();
- return false;
- }
- // hook it up
- node = parseContext.handleFunctionCall(arguments->getLoc(), constructorFunction, arguments);
- return node != nullptr;
- }
- return false;
- }
- // The function_call identifier was already recognized, and passed in as idToken.
- //
- // function_call
- // : [idToken] arguments
- //
- bool HlslGrammar::acceptFunctionCall(const TSourceLoc& loc, TString& name, TIntermTyped*& node, TIntermTyped* baseObject)
- {
- // name
- TString* functionName = nullptr;
- if (baseObject == nullptr) {
- functionName = &name;
- } else if (parseContext.isBuiltInMethod(loc, baseObject, name)) {
- // Built-in methods are not in the symbol table as methods, but as global functions
- // taking an explicit 'this' as the first argument.
- functionName = NewPoolTString(BUILTIN_PREFIX);
- functionName->append(name);
- } else {
- if (! baseObject->getType().isStruct()) {
- expected("structure");
- return false;
- }
- functionName = NewPoolTString("");
- functionName->append(baseObject->getType().getTypeName());
- parseContext.addScopeMangler(*functionName);
- functionName->append(name);
- }
- // function
- TFunction* function = new TFunction(functionName, TType(EbtVoid));
- // arguments
- TIntermTyped* arguments = nullptr;
- if (baseObject != nullptr) {
- // Non-static member functions have an implicit first argument of the base object.
- parseContext.handleFunctionArgument(function, arguments, baseObject);
- }
- if (! acceptArguments(function, arguments))
- return false;
- // call
- node = parseContext.handleFunctionCall(loc, function, arguments);
- return node != nullptr;
- }
- // arguments
- // : LEFT_PAREN expression COMMA expression COMMA ... RIGHT_PAREN
- //
- // The arguments are pushed onto the 'function' argument list and
- // onto the 'arguments' aggregate.
- //
- bool HlslGrammar::acceptArguments(TFunction* function, TIntermTyped*& arguments)
- {
- // LEFT_PAREN
- if (! acceptTokenClass(EHTokLeftParen))
- return false;
- // RIGHT_PAREN
- if (acceptTokenClass(EHTokRightParen))
- return true;
- // must now be at least one expression...
- do {
- // expression
- TIntermTyped* arg;
- if (! acceptAssignmentExpression(arg))
- return false;
- // hook it up
- parseContext.handleFunctionArgument(function, arguments, arg);
- // COMMA
- if (! acceptTokenClass(EHTokComma))
- break;
- } while (true);
- // RIGHT_PAREN
- if (! acceptTokenClass(EHTokRightParen)) {
- expected(")");
- return false;
- }
- return true;
- }
- bool HlslGrammar::acceptLiteral(TIntermTyped*& node)
- {
- switch (token.tokenClass) {
- case EHTokIntConstant:
- node = intermediate.addConstantUnion(token.i, token.loc, true);
- break;
- case EHTokUintConstant:
- node = intermediate.addConstantUnion(token.u, token.loc, true);
- break;
- case EHTokFloat16Constant:
- node = intermediate.addConstantUnion(token.d, EbtFloat16, token.loc, true);
- break;
- case EHTokFloatConstant:
- node = intermediate.addConstantUnion(token.d, EbtFloat, token.loc, true);
- break;
- case EHTokDoubleConstant:
- node = intermediate.addConstantUnion(token.d, EbtDouble, token.loc, true);
- break;
- case EHTokBoolConstant:
- node = intermediate.addConstantUnion(token.b, token.loc, true);
- break;
- case EHTokStringConstant:
- node = intermediate.addConstantUnion(token.string, token.loc, true);
- break;
- default:
- return false;
- }
- advanceToken();
- return true;
- }
- // simple_statement
- // : SEMICOLON
- // | declaration_statement
- // | expression SEMICOLON
- //
- bool HlslGrammar::acceptSimpleStatement(TIntermNode*& statement)
- {
- // SEMICOLON
- if (acceptTokenClass(EHTokSemicolon))
- return true;
- // declaration
- if (acceptDeclaration(statement))
- return true;
- // expression
- TIntermTyped* node;
- if (acceptExpression(node))
- statement = node;
- else
- return false;
- // SEMICOLON (following an expression)
- if (acceptTokenClass(EHTokSemicolon))
- return true;
- else {
- expected(";");
- return false;
- }
- }
- // compound_statement
- // : LEFT_CURLY statement statement ... RIGHT_CURLY
- //
- bool HlslGrammar::acceptCompoundStatement(TIntermNode*& retStatement)
- {
- TIntermAggregate* compoundStatement = nullptr;
- // LEFT_CURLY
- if (! acceptTokenClass(EHTokLeftBrace))
- return false;
- // statement statement ...
- TIntermNode* statement = nullptr;
- while (acceptStatement(statement)) {
- TIntermBranch* branch = statement ? statement->getAsBranchNode() : nullptr;
- if (branch != nullptr && (branch->getFlowOp() == EOpCase ||
- branch->getFlowOp() == EOpDefault)) {
- // hook up individual subsequences within a switch statement
- parseContext.wrapupSwitchSubsequence(compoundStatement, statement);
- compoundStatement = nullptr;
- } else {
- // hook it up to the growing compound statement
- compoundStatement = intermediate.growAggregate(compoundStatement, statement);
- }
- }
- if (compoundStatement)
- compoundStatement->setOperator(EOpSequence);
- retStatement = compoundStatement;
- // RIGHT_CURLY
- return acceptTokenClass(EHTokRightBrace);
- }
- bool HlslGrammar::acceptScopedStatement(TIntermNode*& statement)
- {
- parseContext.pushScope();
- bool result = acceptStatement(statement);
- parseContext.popScope();
- return result;
- }
- bool HlslGrammar::acceptScopedCompoundStatement(TIntermNode*& statement)
- {
- parseContext.pushScope();
- bool result = acceptCompoundStatement(statement);
- parseContext.popScope();
- return result;
- }
- // statement
- // : attributes attributed_statement
- //
- // attributed_statement
- // : compound_statement
- // | simple_statement
- // | selection_statement
- // | switch_statement
- // | case_label
- // | default_label
- // | iteration_statement
- // | jump_statement
- //
- bool HlslGrammar::acceptStatement(TIntermNode*& statement)
- {
- statement = nullptr;
- // attributes
- TAttributes attributes;
- acceptAttributes(attributes);
- // attributed_statement
- switch (peek()) {
- case EHTokLeftBrace:
- return acceptScopedCompoundStatement(statement);
- case EHTokIf:
- return acceptSelectionStatement(statement, attributes);
- case EHTokSwitch:
- return acceptSwitchStatement(statement, attributes);
- case EHTokFor:
- case EHTokDo:
- case EHTokWhile:
- return acceptIterationStatement(statement, attributes);
- case EHTokContinue:
- case EHTokBreak:
- case EHTokDiscard:
- case EHTokReturn:
- return acceptJumpStatement(statement);
- case EHTokCase:
- return acceptCaseLabel(statement);
- case EHTokDefault:
- return acceptDefaultLabel(statement);
- case EHTokRightBrace:
- // Performance: not strictly necessary, but stops a bunch of hunting early,
- // and is how sequences of statements end.
- return false;
- default:
- return acceptSimpleStatement(statement);
- }
- return true;
- }
- // attributes
- // : [zero or more:] bracketed-attribute
- //
- // bracketed-attribute:
- // : LEFT_BRACKET scoped-attribute RIGHT_BRACKET
- // : LEFT_BRACKET LEFT_BRACKET scoped-attribute RIGHT_BRACKET RIGHT_BRACKET
- //
- // scoped-attribute:
- // : attribute
- // | namespace COLON COLON attribute
- //
- // attribute:
- // : UNROLL
- // | UNROLL LEFT_PAREN literal RIGHT_PAREN
- // | FASTOPT
- // | ALLOW_UAV_CONDITION
- // | BRANCH
- // | FLATTEN
- // | FORCECASE
- // | CALL
- // | DOMAIN
- // | EARLYDEPTHSTENCIL
- // | INSTANCE
- // | MAXTESSFACTOR
- // | OUTPUTCONTROLPOINTS
- // | OUTPUTTOPOLOGY
- // | PARTITIONING
- // | PATCHCONSTANTFUNC
- // | NUMTHREADS LEFT_PAREN x_size, y_size,z z_size RIGHT_PAREN
- //
- void HlslGrammar::acceptAttributes(TAttributes& attributes)
- {
- // For now, accept the [ XXX(X) ] syntax, but drop all but
- // numthreads, which is used to set the CS local size.
- // TODO: subset to correct set? Pass on?
- do {
- HlslToken attributeToken;
- // LEFT_BRACKET?
- if (! acceptTokenClass(EHTokLeftBracket))
- return;
- // another LEFT_BRACKET?
- bool doubleBrackets = false;
- if (acceptTokenClass(EHTokLeftBracket))
- doubleBrackets = true;
- // attribute? (could be namespace; will adjust later)
- if (!acceptIdentifier(attributeToken)) {
- if (!peekTokenClass(EHTokRightBracket)) {
- expected("namespace or attribute identifier");
- advanceToken();
- }
- }
- TString nameSpace;
- if (acceptTokenClass(EHTokColonColon)) {
- // namespace COLON COLON
- nameSpace = *attributeToken.string;
- // attribute
- if (!acceptIdentifier(attributeToken)) {
- expected("attribute identifier");
- return;
- }
- }
- TIntermAggregate* expressions = nullptr;
- // (x, ...)
- if (acceptTokenClass(EHTokLeftParen)) {
- expressions = new TIntermAggregate;
- TIntermTyped* node;
- bool expectingExpression = false;
- while (acceptAssignmentExpression(node)) {
- expectingExpression = false;
- expressions->getSequence().push_back(node);
- if (acceptTokenClass(EHTokComma))
- expectingExpression = true;
- }
- // 'expressions' is an aggregate with the expressions in it
- if (! acceptTokenClass(EHTokRightParen))
- expected(")");
- // Error for partial or missing expression
- if (expectingExpression || expressions->getSequence().empty())
- expected("expression");
- }
- // RIGHT_BRACKET
- if (!acceptTokenClass(EHTokRightBracket)) {
- expected("]");
- return;
- }
- // another RIGHT_BRACKET?
- if (doubleBrackets && !acceptTokenClass(EHTokRightBracket)) {
- expected("]]");
- return;
- }
- // Add any values we found into the attribute map.
- if (attributeToken.string != nullptr) {
- TAttributeType attributeType = parseContext.attributeFromName(nameSpace, *attributeToken.string);
- if (attributeType == EatNone)
- parseContext.warn(attributeToken.loc, "unrecognized attribute", attributeToken.string->c_str(), "");
- else {
- TAttributeArgs attributeArgs = { attributeType, expressions };
- attributes.push_back(attributeArgs);
- }
- }
- } while (true);
- }
- // selection_statement
- // : IF LEFT_PAREN expression RIGHT_PAREN statement
- // : IF LEFT_PAREN expression RIGHT_PAREN statement ELSE statement
- //
- bool HlslGrammar::acceptSelectionStatement(TIntermNode*& statement, const TAttributes& attributes)
- {
- TSourceLoc loc = token.loc;
- // IF
- if (! acceptTokenClass(EHTokIf))
- return false;
- // so that something declared in the condition is scoped to the lifetimes
- // of the then-else statements
- parseContext.pushScope();
- // LEFT_PAREN expression RIGHT_PAREN
- TIntermTyped* condition;
- if (! acceptParenExpression(condition))
- return false;
- condition = parseContext.convertConditionalExpression(loc, condition);
- if (condition == nullptr)
- return false;
- // create the child statements
- TIntermNodePair thenElse = { nullptr, nullptr };
- ++parseContext.controlFlowNestingLevel; // this only needs to work right if no errors
- // then statement
- if (! acceptScopedStatement(thenElse.node1)) {
- expected("then statement");
- return false;
- }
- // ELSE
- if (acceptTokenClass(EHTokElse)) {
- // else statement
- if (! acceptScopedStatement(thenElse.node2)) {
- expected("else statement");
- return false;
- }
- }
- // Put the pieces together
- statement = intermediate.addSelection(condition, thenElse, loc);
- parseContext.handleSelectionAttributes(loc, statement->getAsSelectionNode(), attributes);
- parseContext.popScope();
- --parseContext.controlFlowNestingLevel;
- return true;
- }
- // switch_statement
- // : SWITCH LEFT_PAREN expression RIGHT_PAREN compound_statement
- //
- bool HlslGrammar::acceptSwitchStatement(TIntermNode*& statement, const TAttributes& attributes)
- {
- // SWITCH
- TSourceLoc loc = token.loc;
- if (! acceptTokenClass(EHTokSwitch))
- return false;
- // LEFT_PAREN expression RIGHT_PAREN
- parseContext.pushScope();
- TIntermTyped* switchExpression;
- if (! acceptParenExpression(switchExpression)) {
- parseContext.popScope();
- return false;
- }
- // compound_statement
- parseContext.pushSwitchSequence(new TIntermSequence);
- ++parseContext.controlFlowNestingLevel;
- bool statementOkay = acceptCompoundStatement(statement);
- --parseContext.controlFlowNestingLevel;
- if (statementOkay)
- statement = parseContext.addSwitch(loc, switchExpression, statement ? statement->getAsAggregate() : nullptr,
- attributes);
- parseContext.popSwitchSequence();
- parseContext.popScope();
- return statementOkay;
- }
- // iteration_statement
- // : WHILE LEFT_PAREN condition RIGHT_PAREN statement
- // | DO LEFT_BRACE statement RIGHT_BRACE WHILE LEFT_PAREN expression RIGHT_PAREN SEMICOLON
- // | FOR LEFT_PAREN for_init_statement for_rest_statement RIGHT_PAREN statement
- //
- // Non-speculative, only call if it needs to be found; WHILE or DO or FOR already seen.
- bool HlslGrammar::acceptIterationStatement(TIntermNode*& statement, const TAttributes& attributes)
- {
- TSourceLoc loc = token.loc;
- TIntermTyped* condition = nullptr;
- EHlslTokenClass loop = peek();
- assert(loop == EHTokDo || loop == EHTokFor || loop == EHTokWhile);
- // WHILE or DO or FOR
- advanceToken();
- TIntermLoop* loopNode = nullptr;
- switch (loop) {
- case EHTokWhile:
- // so that something declared in the condition is scoped to the lifetime
- // of the while sub-statement
- parseContext.pushScope(); // this only needs to work right if no errors
- parseContext.nestLooping();
- ++parseContext.controlFlowNestingLevel;
- // LEFT_PAREN condition RIGHT_PAREN
- if (! acceptParenExpression(condition))
- return false;
- condition = parseContext.convertConditionalExpression(loc, condition);
- if (condition == nullptr)
- return false;
- // statement
- if (! acceptScopedStatement(statement)) {
- expected("while sub-statement");
- return false;
- }
- parseContext.unnestLooping();
- parseContext.popScope();
- --parseContext.controlFlowNestingLevel;
- loopNode = intermediate.addLoop(statement, condition, nullptr, true, loc);
- statement = loopNode;
- break;
- case EHTokDo:
- parseContext.nestLooping(); // this only needs to work right if no errors
- ++parseContext.controlFlowNestingLevel;
- // statement
- if (! acceptScopedStatement(statement)) {
- expected("do sub-statement");
- return false;
- }
- // WHILE
- if (! acceptTokenClass(EHTokWhile)) {
- expected("while");
- return false;
- }
- // LEFT_PAREN condition RIGHT_PAREN
- if (! acceptParenExpression(condition))
- return false;
- condition = parseContext.convertConditionalExpression(loc, condition);
- if (condition == nullptr)
- return false;
- if (! acceptTokenClass(EHTokSemicolon))
- expected(";");
- parseContext.unnestLooping();
- --parseContext.controlFlowNestingLevel;
- loopNode = intermediate.addLoop(statement, condition, 0, false, loc);
- statement = loopNode;
- break;
- case EHTokFor:
- {
- // LEFT_PAREN
- if (! acceptTokenClass(EHTokLeftParen))
- expected("(");
- // so that something declared in the condition is scoped to the lifetime
- // of the for sub-statement
- parseContext.pushScope();
- // initializer
- TIntermNode* initNode = nullptr;
- if (! acceptSimpleStatement(initNode))
- expected("for-loop initializer statement");
- parseContext.nestLooping(); // this only needs to work right if no errors
- ++parseContext.controlFlowNestingLevel;
- // condition SEMI_COLON
- acceptExpression(condition);
- if (! acceptTokenClass(EHTokSemicolon))
- expected(";");
- if (condition != nullptr) {
- condition = parseContext.convertConditionalExpression(loc, condition);
- if (condition == nullptr)
- return false;
- }
- // iterator SEMI_COLON
- TIntermTyped* iterator = nullptr;
- acceptExpression(iterator);
- if (! acceptTokenClass(EHTokRightParen))
- expected(")");
- // statement
- if (! acceptScopedStatement(statement)) {
- expected("for sub-statement");
- return false;
- }
- statement = intermediate.addForLoop(statement, initNode, condition, iterator, true, loc, loopNode);
- parseContext.popScope();
- parseContext.unnestLooping();
- --parseContext.controlFlowNestingLevel;
- break;
- }
- default:
- return false;
- }
- parseContext.handleLoopAttributes(loc, loopNode, attributes);
- return true;
- }
- // jump_statement
- // : CONTINUE SEMICOLON
- // | BREAK SEMICOLON
- // | DISCARD SEMICOLON
- // | RETURN SEMICOLON
- // | RETURN expression SEMICOLON
- //
- bool HlslGrammar::acceptJumpStatement(TIntermNode*& statement)
- {
- EHlslTokenClass jump = peek();
- switch (jump) {
- case EHTokContinue:
- case EHTokBreak:
- case EHTokDiscard:
- case EHTokReturn:
- advanceToken();
- break;
- default:
- // not something we handle in this function
- return false;
- }
- switch (jump) {
- case EHTokContinue:
- statement = intermediate.addBranch(EOpContinue, token.loc);
- if (parseContext.loopNestingLevel == 0) {
- expected("loop");
- return false;
- }
- break;
- case EHTokBreak:
- statement = intermediate.addBranch(EOpBreak, token.loc);
- if (parseContext.loopNestingLevel == 0 && parseContext.switchSequenceStack.size() == 0) {
- expected("loop or switch");
- return false;
- }
- break;
- case EHTokDiscard:
- statement = intermediate.addBranch(EOpKill, token.loc);
- break;
- case EHTokReturn:
- {
- // expression
- TIntermTyped* node;
- if (acceptExpression(node)) {
- // hook it up
- statement = parseContext.handleReturnValue(token.loc, node);
- } else
- statement = intermediate.addBranch(EOpReturn, token.loc);
- break;
- }
- default:
- assert(0);
- return false;
- }
- // SEMICOLON
- if (! acceptTokenClass(EHTokSemicolon))
- expected(";");
- return true;
- }
- // case_label
- // : CASE expression COLON
- //
- bool HlslGrammar::acceptCaseLabel(TIntermNode*& statement)
- {
- TSourceLoc loc = token.loc;
- if (! acceptTokenClass(EHTokCase))
- return false;
- TIntermTyped* expression;
- if (! acceptExpression(expression)) {
- expected("case expression");
- return false;
- }
- if (! acceptTokenClass(EHTokColon)) {
- expected(":");
- return false;
- }
- statement = parseContext.intermediate.addBranch(EOpCase, expression, loc);
- return true;
- }
- // default_label
- // : DEFAULT COLON
- //
- bool HlslGrammar::acceptDefaultLabel(TIntermNode*& statement)
- {
- TSourceLoc loc = token.loc;
- if (! acceptTokenClass(EHTokDefault))
- return false;
- if (! acceptTokenClass(EHTokColon)) {
- expected(":");
- return false;
- }
- statement = parseContext.intermediate.addBranch(EOpDefault, loc);
- return true;
- }
- // array_specifier
- // : LEFT_BRACKET integer_expression RGHT_BRACKET ... // optional
- // : LEFT_BRACKET RGHT_BRACKET // optional
- //
- void HlslGrammar::acceptArraySpecifier(TArraySizes*& arraySizes)
- {
- arraySizes = nullptr;
- // Early-out if there aren't any array dimensions
- if (!peekTokenClass(EHTokLeftBracket))
- return;
- // If we get here, we have at least one array dimension. This will track the sizes we find.
- arraySizes = new TArraySizes;
- // Collect each array dimension.
- while (acceptTokenClass(EHTokLeftBracket)) {
- TSourceLoc loc = token.loc;
- TIntermTyped* sizeExpr = nullptr;
- // Array sizing expression is optional. If omitted, array will be later sized by initializer list.
- const bool hasArraySize = acceptAssignmentExpression(sizeExpr);
- if (! acceptTokenClass(EHTokRightBracket)) {
- expected("]");
- return;
- }
- if (hasArraySize) {
- TArraySize arraySize;
- parseContext.arraySizeCheck(loc, sizeExpr, arraySize);
- arraySizes->addInnerSize(arraySize);
- } else {
- arraySizes->addInnerSize(0); // sized by initializers.
- }
- }
- }
- // post_decls
- // : COLON semantic // optional
- // COLON PACKOFFSET LEFT_PAREN c[Subcomponent][.component] RIGHT_PAREN // optional
- // COLON REGISTER LEFT_PAREN [shader_profile,] Type#[subcomp]opt (COMMA SPACEN)opt RIGHT_PAREN // optional
- // COLON LAYOUT layout_qualifier_list
- // annotations // optional
- //
- // Return true if any tokens were accepted. That is,
- // false can be returned on successfully recognizing nothing,
- // not necessarily meaning bad syntax.
- //
- bool HlslGrammar::acceptPostDecls(TQualifier& qualifier)
- {
- bool found = false;
- do {
- // COLON
- if (acceptTokenClass(EHTokColon)) {
- found = true;
- HlslToken idToken;
- if (peekTokenClass(EHTokLayout))
- acceptLayoutQualifierList(qualifier);
- else if (acceptTokenClass(EHTokPackOffset)) {
- // PACKOFFSET LEFT_PAREN c[Subcomponent][.component] RIGHT_PAREN
- if (! acceptTokenClass(EHTokLeftParen)) {
- expected("(");
- return false;
- }
- HlslToken locationToken;
- if (! acceptIdentifier(locationToken)) {
- expected("c[subcomponent][.component]");
- return false;
- }
- HlslToken componentToken;
- if (acceptTokenClass(EHTokDot)) {
- if (! acceptIdentifier(componentToken)) {
- expected("component");
- return false;
- }
- }
- if (! acceptTokenClass(EHTokRightParen)) {
- expected(")");
- break;
- }
- parseContext.handlePackOffset(locationToken.loc, qualifier, *locationToken.string, componentToken.string);
- } else if (! acceptIdentifier(idToken)) {
- expected("layout, semantic, packoffset, or register");
- return false;
- } else if (*idToken.string == "register") {
- // REGISTER LEFT_PAREN [shader_profile,] Type#[subcomp]opt (COMMA SPACEN)opt RIGHT_PAREN
- // LEFT_PAREN
- if (! acceptTokenClass(EHTokLeftParen)) {
- expected("(");
- return false;
- }
- HlslToken registerDesc; // for Type#
- HlslToken profile;
- if (! acceptIdentifier(registerDesc)) {
- expected("register number description");
- return false;
- }
- if (registerDesc.string->size() > 1 && !isdigit((*registerDesc.string)[1]) &&
- acceptTokenClass(EHTokComma)) {
- // Then we didn't really see the registerDesc yet, it was
- // actually the profile. Adjust...
- profile = registerDesc;
- if (! acceptIdentifier(registerDesc)) {
- expected("register number description");
- return false;
- }
- }
- int subComponent = 0;
- if (acceptTokenClass(EHTokLeftBracket)) {
- // LEFT_BRACKET subcomponent RIGHT_BRACKET
- if (! peekTokenClass(EHTokIntConstant)) {
- expected("literal integer");
- return false;
- }
- subComponent = token.i;
- advanceToken();
- if (! acceptTokenClass(EHTokRightBracket)) {
- expected("]");
- break;
- }
- }
- // (COMMA SPACEN)opt
- HlslToken spaceDesc;
- if (acceptTokenClass(EHTokComma)) {
- if (! acceptIdentifier(spaceDesc)) {
- expected ("space identifier");
- return false;
- }
- }
- // RIGHT_PAREN
- if (! acceptTokenClass(EHTokRightParen)) {
- expected(")");
- break;
- }
- parseContext.handleRegister(registerDesc.loc, qualifier, profile.string, *registerDesc.string, subComponent, spaceDesc.string);
- } else {
- // semantic, in idToken.string
- TString semanticUpperCase = *idToken.string;
- std::transform(semanticUpperCase.begin(), semanticUpperCase.end(), semanticUpperCase.begin(), ::toupper);
- parseContext.handleSemantic(idToken.loc, qualifier, mapSemantic(semanticUpperCase.c_str()), semanticUpperCase);
- }
- } else if (peekTokenClass(EHTokLeftAngle)) {
- found = true;
- acceptAnnotations(qualifier);
- } else
- break;
- } while (true);
- return found;
- }
- //
- // Get the stream of tokens from the scanner, but skip all syntactic/semantic
- // processing.
- //
- bool HlslGrammar::captureBlockTokens(TVector<HlslToken>& tokens)
- {
- if (! peekTokenClass(EHTokLeftBrace))
- return false;
- int braceCount = 0;
- do {
- switch (peek()) {
- case EHTokLeftBrace:
- ++braceCount;
- break;
- case EHTokRightBrace:
- --braceCount;
- break;
- case EHTokNone:
- // End of input before balance { } is bad...
- return false;
- default:
- break;
- }
- tokens.push_back(token);
- advanceToken();
- } while (braceCount > 0);
- return true;
- }
- // Return a string for just the types that can also be declared as an identifier.
- const char* HlslGrammar::getTypeString(EHlslTokenClass tokenClass) const
- {
- switch (tokenClass) {
- case EHTokSample: return "sample";
- case EHTokHalf: return "half";
- case EHTokHalf1x1: return "half1x1";
- case EHTokHalf1x2: return "half1x2";
- case EHTokHalf1x3: return "half1x3";
- case EHTokHalf1x4: return "half1x4";
- case EHTokHalf2x1: return "half2x1";
- case EHTokHalf2x2: return "half2x2";
- case EHTokHalf2x3: return "half2x3";
- case EHTokHalf2x4: return "half2x4";
- case EHTokHalf3x1: return "half3x1";
- case EHTokHalf3x2: return "half3x2";
- case EHTokHalf3x3: return "half3x3";
- case EHTokHalf3x4: return "half3x4";
- case EHTokHalf4x1: return "half4x1";
- case EHTokHalf4x2: return "half4x2";
- case EHTokHalf4x3: return "half4x3";
- case EHTokHalf4x4: return "half4x4";
- case EHTokBool: return "bool";
- case EHTokFloat: return "float";
- case EHTokDouble: return "double";
- case EHTokInt: return "int";
- case EHTokUint: return "uint";
- case EHTokMin16float: return "min16float";
- case EHTokMin10float: return "min10float";
- case EHTokMin16int: return "min16int";
- case EHTokMin12int: return "min12int";
- case EHTokConstantBuffer: return "ConstantBuffer";
- case EHTokLayout: return "layout";
- default:
- return nullptr;
- }
- }
- } // end namespace glslang
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