gcc/rust/hir/rust-ast-lower-expr.h

// Copyright (C) 2020-2026 Free Software Foundation, Inc.

// This file is part of GCC.

// GCC is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 3, or (at your option) any later
// version.

// GCC is distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
// for more details.

// You should have received a copy of the GNU General Public License
// along with GCC; see the file COPYING3.  If not see
// <http://www.gnu.org/licenses/>.

#ifndef RUST_AST_LOWER_EXPR
#define RUST_AST_LOWER_EXPR

#include "rust-ast-lower-base.h"
#include "rust-ast.h"
#include "rust-expr.h"

namespace Rust {
namespace HIR {

class ASTLowerPathInExpression : public ASTLoweringBase
{
  using Rust::HIR::ASTLoweringBase::visit;

public:
  static HIR::PathInExpression *translate (AST::PathInExpression &expr)
  {
    ASTLowerPathInExpression compiler;
    expr.accept_vis (compiler);
    rust_assert (compiler.translated);
    return compiler.translated;
  }

  void visit (AST::PathInExpression &expr) override;

private:
  ASTLowerPathInExpression () : translated (nullptr) {}

  HIR::PathInExpression *translated;
};

class ASTLowerQualPathInExpression : public ASTLoweringBase
{
  using Rust::HIR::ASTLoweringBase::visit;

public:
  static HIR::QualifiedPathInExpression *
  translate (AST::QualifiedPathInExpression &expr)
  {
    ASTLowerQualPathInExpression compiler;
    expr.accept_vis (compiler);
    rust_assert (compiler.translated);
    return compiler.translated;
  }

  void visit (AST::QualifiedPathInExpression &expr) override;

private:
  ASTLowerQualPathInExpression () : translated (nullptr) {}

  HIR::QualifiedPathInExpression *translated;
};

class ASTLoweringExpr : public ASTLoweringBase
{
  using Rust::HIR::ASTLoweringBase::visit;

public:
  static HIR::Expr *translate (AST::Expr &expr, bool *terminated = nullptr);

  void visit (AST::TupleIndexExpr &expr) override;
  void visit (AST::TupleExpr &expr) override;
  void visit (AST::IfExpr &expr) override;
  void visit (AST::IfExprConseqElse &expr) override;
  void visit (AST::IfLetExpr &expr) override;
  void visit (AST::IfLetExprConseqElse &expr) override;
  void visit (AST::BlockExpr &expr) override;
  void visit (AST::AnonConst &expr) override;
  void visit (AST::ConstBlock &expr) override;
  void visit (AST::UnsafeBlockExpr &expr) override;
  void visit (AST::PathInExpression &expr) override;
  void visit (AST::QualifiedPathInExpression &expr) override;
  void visit (AST::BoxExpr &expr) override;
  void visit (AST::ReturnExpr &expr) override;
  void visit (AST::CallExpr &expr) override;
  void visit (AST::MethodCallExpr &expr) override;
  void visit (AST::AssignmentExpr &expr) override;
  void visit (AST::IdentifierExpr &expr) override;
  void visit (AST::ArrayExpr &expr) override;
  void visit (AST::ArrayIndexExpr &expr) override;
  void visit (AST::ArrayElemsValues &elems) override;
  void visit (AST::ArrayElemsCopied &elems) override;
  void visit (AST::LiteralExpr &expr) override;
  void visit (AST::ArithmeticOrLogicalExpr &expr) override;
  void visit (AST::ComparisonExpr &expr) override;
  void visit (AST::LazyBooleanExpr &expr) override;
  void visit (AST::NegationExpr &expr) override;
  void visit (AST::TypeCastExpr &expr) override;
  void visit (AST::CompoundAssignmentExpr &expr) override;
  void visit (AST::StructExprStruct &struct_expr) override;
  void visit (AST::StructExprStructFields &struct_expr) override;
  void visit (AST::GroupedExpr &expr) override;
  void visit (AST::FieldAccessExpr &expr) override;
  void visit (AST::LoopExpr &expr) override;
  void visit (AST::WhileLoopExpr &expr) override;
  void visit (AST::BreakExpr &expr) override;
  void visit (AST::ContinueExpr &expr) override;
  void visit (AST::BorrowExpr &expr) override;
  void visit (AST::DereferenceExpr &expr) override;
  void visit (AST::MatchExpr &expr) override;
  void visit (AST::RangeFromToExpr &expr) override;
  void visit (AST::RangeFromExpr &expr) override;
  void visit (AST::RangeToExpr &expr) override;
  void visit (AST::RangeFullExpr &expr) override;
  void visit (AST::RangeFromToInclExpr &expr) override;
  void visit (AST::ClosureExprInner &expr) override;
  void visit (AST::ClosureExprInnerTyped &expr) override;
  void visit (AST::InlineAsm &expr) override;
  void visit (AST::LlvmInlineAsm &expr) override;

  // Extra visitor for builtin macro nodes
  void visit (AST::FormatArgs &fmt) override;
  void visit (AST::OffsetOf &offset_of) override;

private:
  ASTLoweringExpr ();

  HIR::Expr *translated;
  HIR::ArrayElems *translated_array_elems;
  bool terminated;
};

} // namespace HIR
} // namespace Rust

#endif // RUST_AST_LOWER_EXPR