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Shader: Add support for compound operators

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This commit is contained in:
Jérôme Leclercq
2021-09-24 15:39:03 +02:00
parent 601ed047ba
commit 0442db1c53
15 changed files with 350 additions and 234 deletions
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24
src/Nazara/Shader/ShaderLangParser.cpp
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@@ -860,12 +860,32 @@ namespace Nz::ShaderLang
ShaderAst::ExpressionPtr Parser::ParseVariableAssignation()
{
// Variable expression
ShaderAst::ExpressionPtr left = ParseExpression();
Expect(Advance(), TokenType::Assign);
// Assignation type
ShaderAst::AssignType assignType;
switch (Peek().type)
{
case TokenType::Assign: assignType = ShaderAst::AssignType::Simple; break;
case TokenType::DivideAssign: assignType = ShaderAst::AssignType::CompoundDivide; break;
case TokenType::LogicalAndAssign: assignType = ShaderAst::AssignType::CompoundLogicalAnd; break;
case TokenType::LogicalOrAssign: assignType = ShaderAst::AssignType::CompoundLogicalOr; break;
case TokenType::MultiplyAssign: assignType = ShaderAst::AssignType::CompoundMultiply; break;
case TokenType::MinusAssign: assignType = ShaderAst::AssignType::CompoundSubtract; break;
case TokenType::PlusAssign: assignType = ShaderAst::AssignType::CompoundAdd; break;
default:
throw UnexpectedToken{};
}
Consume();
// Value expression
ShaderAst::ExpressionPtr right = ParseExpression();
return ShaderBuilder::Assign(ShaderAst::AssignType::Simple, std::move(left), std::move(right));
return ShaderBuilder::Assign(assignType, std::move(left), std::move(right));
}
ShaderAst::StatementPtr Parser::ParseVariableDeclaration()