diff options
Diffstat (limited to 'source/slang/slang-parser.cpp')
| -rw-r--r-- | source/slang/slang-parser.cpp | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/source/slang/slang-parser.cpp b/source/slang/slang-parser.cpp index a019f97c4..a2fd944eb 100644 --- a/source/slang/slang-parser.cpp +++ b/source/slang/slang-parser.cpp @@ -1692,6 +1692,8 @@ static void maybeParseGenericConstraints(Parser* parser, ContainerDecl* genericP Token whereToken; while (AdvanceIf(parser, "where", &whereToken)) { + bool optional = AdvanceIf(parser, "optional", &whereToken); + auto subType = parser->ParseTypeExp(); if (AdvanceIf(parser, TokenType::Colon)) { @@ -1702,6 +1704,12 @@ static void maybeParseGenericConstraints(Parser* parser, ContainerDecl* genericP parser->FillPosition(constraint); constraint->sub = subType; constraint->sup = parser->ParseTypeExp(); + if (optional) + { + addModifier( + constraint, + parser->astBuilder->create<OptionalConstraintModifier>()); + } AddMember(genericParent, constraint); if (!AdvanceIf(parser, TokenType::Comma)) break; @@ -1715,6 +1723,10 @@ static void maybeParseGenericConstraints(Parser* parser, ContainerDecl* genericP parser->FillPosition(constraint); constraint->sub = subType; constraint->sup = parser->ParseTypeExp(); + if (optional) + { + addModifier(constraint, parser->astBuilder->create<OptionalConstraintModifier>()); + } AddMember(genericParent, constraint); } else if (AdvanceIf(parser, TokenType::LParent)) |