mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-10-01 13:25:52 +01:00
Jon Ross-Perkins
4d522c8e90
This does some more work to the run_clang_tidy.py wrapper script, and runs an example pass. "again" because it's really the proto fuzzer changes that broke it, it had been working before. "mostly" because there's still an issue within the proto fuzzer that it can't find "port/protobuf.h", i.e. https://github.com/google/libprotobuf-mutator/tree/master/port, but I'm still hesitant to add an include path there.
103 lines
3.3 KiB
C++
103 lines
3.3 KiB
C++
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#ifndef CARBON_EXPLORER_AST_IMPL_BINDING_H_
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#define CARBON_EXPLORER_AST_IMPL_BINDING_H_
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#include <map>
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#include "common/check.h"
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#include "common/ostream.h"
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#include "explorer/ast/ast_node.h"
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#include "explorer/ast/pattern.h"
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#include "explorer/ast/value_category.h"
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namespace Carbon {
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class Value;
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class Expression;
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class ImplBinding;
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// `ImplBinding` plays the role of the parameter for passing witness
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// tables to a generic. However, unlike regular parameters
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// (`BindingPattern`) there is no explicit syntax that corresponds to
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// an `ImplBinding`, so they are not created during parsing. Instances
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// of `ImplBinding` are created during type checking, when processing
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// a type parameter (a `GenericBinding`), or an `is` requirement in
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// a `where` clause.
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class ImplBinding : public AstNode {
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public:
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using ImplementsCarbonValueNode = void;
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ImplBinding(SourceLocation source_loc,
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Nonnull<const GenericBinding*> type_var,
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std::optional<Nonnull<const Value*>> iface)
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: AstNode(AstNodeKind::ImplBinding, source_loc),
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type_var_(type_var),
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iface_(iface) {}
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static auto classof(const AstNode* node) -> bool {
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return InheritsFromImplBinding(node->kind());
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}
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void Print(llvm::raw_ostream& out) const override;
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void PrintID(llvm::raw_ostream& out) const override;
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// The binding for the type variable.
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auto type_var() const -> Nonnull<const GenericBinding*> { return type_var_; }
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// The constraint being implemented.
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// TODO: Rename this to `constraint`.
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auto interface() const -> Nonnull<const Value*> {
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CARBON_CHECK(iface_) << "interface has not been set yet";
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return *iface_;
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}
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// Set the interface being implemented, if not set by the constructor. Should
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// only be called by typechecking.
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void set_interface(Nonnull<const Value*> iface) {
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CARBON_CHECK(!iface_) << "interface set twice";
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iface_ = iface;
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}
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// Required for the ValueNode interface
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auto constant_value() const -> std::optional<Nonnull<const Value*>> {
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return std::nullopt;
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}
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auto symbolic_identity() const -> std::optional<Nonnull<const Value*>> {
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return symbolic_identity_;
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}
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void set_symbolic_identity(Nonnull<const Value*> value) {
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CARBON_CHECK(!symbolic_identity_.has_value());
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symbolic_identity_ = value;
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}
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// These functions exist only so that an `ImplBinding` can be used as a
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// `ValueNodeView` as a key in a `StaticScope`.
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auto static_type() const -> const Value& {
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CARBON_FATAL() << "an ImplBinding has no type";
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}
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auto value_category() const -> ValueCategory { return ValueCategory::Let; }
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// Return the original impl binding.
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auto original() const -> Nonnull<const ImplBinding*> {
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if (original_.has_value()) {
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return *original_;
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} else {
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return this;
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}
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}
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// Set the original impl binding.
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void set_original(Nonnull<const ImplBinding*> orig) { original_ = orig; }
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private:
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Nonnull<const GenericBinding*> type_var_;
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std::optional<Nonnull<const Value*>> iface_;
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std::optional<Nonnull<const Value*>> symbolic_identity_;
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std::optional<Nonnull<const ImplBinding*>> original_;
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};
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} // namespace Carbon
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#endif // CARBON_EXPLORER_AST_IMPL_BINDING_H_
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