mirror of https://github.com/gcc-mirror/gcc.git
117 lines
4.0 KiB
C++
117 lines
4.0 KiB
C++
// Copyright (C) 2020-2024 Free Software Foundation, Inc.
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// This file is part of GCC.
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// GCC is free software; you can redistribute it and/or modify it under
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// the terms of the GNU General Public License as published by the Free
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// Software Foundation; either version 3, or (at your option) any later
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// version.
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// GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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// for more details.
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// You should have received a copy of the GNU General Public License
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// along with GCC; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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#ifndef AST_BUILDER_H
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#define AST_BUILDER_H
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#include "rust-ast-full.h"
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namespace Rust {
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namespace AST {
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// TODO: Use this builder when expanding regular macros
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/* Builder class with helper methods to create AST nodes. This builder is
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* tailored towards generating multiple AST nodes from a single location, and
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* may not be suitable to other purposes */
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class AstBuilder
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{
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public:
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AstBuilder (location_t loc) : loc (loc) {}
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/* Create an identifier expression (`variable`) */
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std::unique_ptr<Expr> identifier (std::string name);
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/* Create a tuple index expression (`receiver.0`) */
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std::unique_ptr<Expr> tuple_idx (std::string receiver, int idx);
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/* Create a reference to an expression (`&of`) */
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std::unique_ptr<Expr> ref (std::unique_ptr<Expr> &&of, bool mut = false);
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/* Create a dereference of an expression (`*of`) */
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std::unique_ptr<Expr> deref (std::unique_ptr<Expr> &&of);
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/* Create a block with an optional tail expression */
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std::unique_ptr<Expr> block (std::vector<std::unique_ptr<Stmt>> &&stmts,
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std::unique_ptr<Expr> &&tail_expr = nullptr);
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/* Create a let binding with an optional type and initializer (`let <name> :
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* <type> = <init>`) */
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std::unique_ptr<Stmt> let (std::unique_ptr<Pattern> pattern,
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std::unique_ptr<Type> type = nullptr,
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std::unique_ptr<Expr> init = nullptr);
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/**
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* Create a call expression to a function, struct or enum variant, given its
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* arguments (`path(arg0, arg1, arg2)`)
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*/
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std::unique_ptr<Expr> call (std::unique_ptr<Expr> &&path,
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std::vector<std::unique_ptr<Expr>> &&args);
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/* Empty function qualifiers, with no specific qualifiers */
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FunctionQualifiers fn_qualifiers ();
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/* Create a single path segment from one string */
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PathExprSegment path_segment (std::string seg);
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/* And similarly for type path segments */
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std::unique_ptr<TypePathSegment> type_path_segment (std::string seg);
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/* Create a Type from a single string - the most basic kind of type in our AST
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*/
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std::unique_ptr<Type> single_type_path (std::string type);
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/**
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* Create a path in expression from multiple segments (`Clone::clone`). You
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* do not need to separate the segments using `::`, you can simply provide a
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* vector of strings to the functions which will get turned into path segments
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*/
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PathInExpression path_in_expression (std::vector<std::string> &&segments);
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/* Create a struct expression for unit structs (`S`) */
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std::unique_ptr<Expr> struct_expr_struct (std::string struct_name);
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/**
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* Create an expression for struct instantiation with fields (`S { a, b: c }`)
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*/
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std::unique_ptr<Expr>
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struct_expr (std::string struct_name,
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std::vector<std::unique_ptr<StructExprField>> &&fields);
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/* Create a field expression for struct instantiation (`field_name: value`) */
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std::unique_ptr<StructExprField>
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struct_expr_field (std::string field_name, std::unique_ptr<Expr> &&value);
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/* Create a field access expression (`instance.field`) */
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std::unique_ptr<Expr> field_access (std::unique_ptr<Expr> &&instance,
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std::string field);
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/* Create a wildcard pattern (`_`) */
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std::unique_ptr<Pattern> wildcard ();
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private:
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/**
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* Location of the generated AST nodes
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*/
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location_t loc;
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};
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} // namespace AST
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} // namespace Rust
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#endif // AST_BUILDER_H
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