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Fix #54: BindPattern is not bound during inference inside a match-expression

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This commit is contained in:
Sam Vervaeck 2024-02-19 14:17:12 +01:00
parent 521e1f1e4f
commit 60f1e4519e
Signed by: samvv
SSH key fingerprint: SHA256:dIg0ywU1OP+ZYifrYxy8c5esO72cIKB+4/9wkZj1VaY
3 changed files with 19 additions and 2 deletions
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11
bootstrap/cxx/include/bolt/CST.hpp
View file

@ -1637,6 +1637,9 @@ namespace bolt {
};
class MatchCase : public Node {
Scope* TheScope = nullptr;
public:
InferContext* Ctx;
@ -1657,6 +1660,14 @@ namespace bolt {
Token* getFirstToken() const override;
Token* getLastToken() const override;
inline Scope* getScope() override {
if (TheScope == nullptr) {
TheScope = new Scope(this);
}
return TheScope;
}
};
class MatchExpression : public Expression {

6
bootstrap/cxx/src/CST.cc
View file

@ -78,6 +78,12 @@ namespace bolt {
}
break;
}
case NodeKind::MatchCase:
{
auto Case = static_cast<MatchCase*>(X);
visitPattern(Case->Pattern, Case);
break;
}
case NodeKind::LetDeclaration:
{
auto Decl = static_cast<LetDeclaration*>(X);

4
bootstrap/cxx/src/Checker.cc
View file

@ -508,6 +508,7 @@ namespace bolt {
auto Instance = static_cast<InstanceDeclaration*>(Let->Parent);
auto Class = cast<ClassDeclaration>(Instance->getScope()->lookup({ {}, getCanonicalText(Instance->Name) }, SymbolKind::Class));
// TODO check if `Class` is nullptr
auto SigLet = cast<LetDeclaration>(Class->getScope()->lookupDirect({ {}, Let->getNameAsString() }, SymbolKind::Var));
auto Params = addClassVars(Class, false);
@ -1297,7 +1298,7 @@ namespace bolt {
auto Y = static_cast<ReferenceExpression*>(N);
auto Def = Y->getScope()->lookup(Y->getSymbolPath());
// Name lookup failures will be reported directly in inferExpression().
if (Def == nullptr || Def->getKind() == NodeKind::SourceFile) {
if (Def == nullptr || Def->getKind() != NodeKind::LetDeclaration) {
return;
}
// This case ensures that a deeply nested structure that references a
@ -1307,7 +1308,6 @@ namespace bolt {
RefGraph.addEdge(Stack.top(), Def->Parent);
return;
}
ZEN_ASSERT(Def->getKind() == NodeKind::LetDeclaration);
if (!Stack.empty()) {
RefGraph.addEdge(Def, Stack.top());
}