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Bare-bones support for forward-declared classes. (#3294)

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This is mostly scaffolding, but is just about enough for pointers to
classes to work properly as types.
This commit is contained in:
Richard Smith
2023-10-13 21:29:50 +00:00
committed by GitHub
parent 0e2b6c7f1a
commit 4e64b1948d
16 changed files with 225 additions and 13 deletions
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toolchain/check/node_stack.h
+13
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@@ -108,6 +108,11 @@ class NodeStack {
RequireParseKind<RequiredParseKind>(back.first);
return back;
}
if constexpr (RequiredIdKind == IdKind::ClassId) {
auto back = PopWithParseNode<SemIR::ClassId>();
RequireParseKind<RequiredParseKind>(back.first);
return back;
}
if constexpr (RequiredIdKind == IdKind::StringId) {
auto back = PopWithParseNode<SemIR::StringId>();
RequireParseKind<RequiredParseKind>(back.first);
@@ -154,6 +159,9 @@ class NodeStack {
if constexpr (RequiredIdKind == IdKind::FunctionId) {
return back.id<SemIR::FunctionId>();
}
if constexpr (RequiredIdKind == IdKind::ClassId) {
return back.id<SemIR::ClassId>();
}
if constexpr (RequiredIdKind == IdKind::StringId) {
return back.id<SemIR::StringId>();
}
@@ -177,6 +185,7 @@ class NodeStack {
NodeId,
NodeBlockId,
FunctionId,
ClassId,
StringId,
TypeId,
// No associated ID type.
@@ -272,6 +281,7 @@ class NodeStack {
case Parse::NodeKind::Name:
return IdKind::StringId;
case Parse::NodeKind::ArrayExpressionSemi:
case Parse::NodeKind::ClassIntroducer:
case Parse::NodeKind::CodeBlockStart:
case Parse::NodeKind::FunctionIntroducer:
case Parse::NodeKind::IfStatementElse:
@@ -302,6 +312,9 @@ class NodeStack {
if constexpr (std::is_same_v<IdT, SemIR::FunctionId>) {
return IdKind::FunctionId;
}
if constexpr (std::is_same_v<IdT, SemIR::ClassId>) {
return IdKind::ClassId;
}
if constexpr (std::is_same_v<IdT, SemIR::StringId>) {
return IdKind::StringId;
}