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Implement static name resolution (#958)

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This doesn't actually use the results of name resolution, but it does verify that they are present.
Also ensures that name resolution and type checking are applied to deduced function parameters and the implicit call to `Main()`.

Co-authored-by: Jon Meow <46229924+jonmeow@users.noreply.github.com>
This commit is contained in:
Geoff Romer
2021-11-30 13:33:54 -08:00
committed by GitHub
co-authored by Jon Meow
parent dc5e62fc7a
commit 17e0a1afb9
12 changed files with 347 additions and 22 deletions
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executable_semantics/ast/declaration.h
+11
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@@ -91,6 +91,7 @@ struct GenericBinding : public virtual AstNode, public NamedEntity {
auto name() const -> const std::string& { return name_; }
auto type() const -> const Expression& { return *type_; }
auto type() -> Expression& { return *type_; }
private:
std::string name_;
@@ -201,6 +202,9 @@ class FunctionDeclaration : public Declaration {
-> llvm::ArrayRef<Nonnull<const GenericBinding*>> {
return deduced_parameters_;
}
auto deduced_parameters() -> llvm::ArrayRef<Nonnull<GenericBinding*>> {
return deduced_parameters_;
}
auto param_pattern() const -> const TuplePattern& { return *param_pattern_; }
auto param_pattern() -> TuplePattern& { return *param_pattern_; }
auto return_term() const -> const ReturnTerm& { return return_term_; }
@@ -262,6 +266,7 @@ class AlternativeSignature : public virtual AstNode, public NamedEntity {
auto name() const -> const std::string& { return name_; }
auto signature() const -> const Expression& { return *signature_; }
auto signature() -> Expression& { return *signature_; }
private:
std::string name_;
@@ -285,6 +290,9 @@ class ChoiceDeclaration : public Declaration {
-> llvm::ArrayRef<Nonnull<const AlternativeSignature*>> {
return alternatives_;
}
auto alternatives() -> llvm::ArrayRef<Nonnull<AlternativeSignature*>> {
return alternatives_;
}
// Contains the alternatives.
auto static_scope() const -> const StaticScope& { return static_scope_; }
@@ -297,6 +305,9 @@ class ChoiceDeclaration : public Declaration {
};
// Global variable definition implements the Declaration concept.
//
// TODO: this should not inherit from NamedEntity, because names should
// always resolve to the underlying binding, not the VariableDeclaration.
class VariableDeclaration : public Declaration {
public:
VariableDeclaration(SourceLocation source_loc,