FLANG

misc-parsers.h
1 //===-- lib/Parser/misc-parsers.h -------------------------------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 // Parser templates and constexpr parsers shared by multiple
10 // per-type parser implementation source files.
11
12 #ifndef FORTRAN_PARSER_MISC_PARSERS_H_
13 #define FORTRAN_PARSER_MISC_PARSERS_H_
14
15 #include "basic-parsers.h"
16 #include "token-parsers.h"
17 #include "type-parsers.h"
18 #include "flang/Parser/message.h"
19 #include "flang/Parser/parse-tree.h"
20
21 namespace Fortran::parser {
22
23 // R401 xzy-list -> xzy [, xzy]...
24 template <typename PA> inline constexpr auto nonemptyList(const PA &p) {
25 return nonemptySeparated(p, ","_tok); // p-list
26 }
27
28 template <typename PA>
29 inline constexpr auto nonemptyList(MessageFixedText error, const PA &p) {
30 return withMessage(error, nonemptySeparated(p, ","_tok)); // p-list
31 }
32
33 template <typename PA> inline constexpr auto optionalList(const PA &p) {
34 return defaulted(nonemptySeparated(p, ","_tok)); // [p-list]
35 }
36
37 // R402 xzy-name -> name
38
39 // R516 keyword -> name
40 constexpr auto keyword{construct<Keyword>(name)};
41
42 // R1101 block -> [execution-part-construct]...
43 constexpr auto block{many(executionPartConstruct)};
44
45 constexpr auto listOfNames{nonemptyList("expected names"_err_en_US, name)};
46
47 constexpr auto star{construct<Star>("*"_tok)};
48 constexpr auto allocatable{construct<Allocatable>("ALLOCATABLE"_tok)};
49 constexpr auto contiguous{construct<Contiguous>("CONTIGUOUS"_tok)};
50 constexpr auto optional{construct<Optional>("OPTIONAL"_tok)};
51 constexpr auto pointer{construct<Pointer>("POINTER"_tok)};
52 constexpr auto protectedAttr{construct<Protected>("PROTECTED"_tok)};
53 constexpr auto save{construct<Save>("SAVE"_tok)};
54
55 } // namespace Fortran::parser
56 #endif
Fortran::parser
Definition: check-expression.h:19