1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
|
//===--- LexerUtils.h - clang-tidy-------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_UTILS_LEXER_UTILS_H
#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_UTILS_LEXER_UTILS_H
#include "clang/AST/ASTContext.h"
#include "clang/Lex/Lexer.h"
namespace clang {
namespace tidy {
namespace utils {
namespace lexer {
/// Returns previous token or ``tok::unknown`` if not found.
Token getPreviousToken(SourceLocation Location, const SourceManager &SM,
const LangOptions &LangOpts, bool SkipComments = true);
SourceLocation findPreviousTokenStart(SourceLocation Start,
const SourceManager &SM,
const LangOptions &LangOpts);
SourceLocation findPreviousTokenKind(SourceLocation Start,
const SourceManager &SM,
const LangOptions &LangOpts,
tok::TokenKind TK);
SourceLocation findNextTerminator(SourceLocation Start, const SourceManager &SM,
const LangOptions &LangOpts);
template <typename TokenKind, typename... TokenKinds>
SourceLocation findPreviousAnyTokenKind(SourceLocation Start,
const SourceManager &SM,
const LangOptions &LangOpts,
TokenKind TK, TokenKinds... TKs) {
while (true) {
SourceLocation L = findPreviousTokenStart(Start, SM, LangOpts);
if (L.isInvalid() || L.isMacroID())
return SourceLocation();
Token T;
// Returning 'true' is used to signal failure to retrieve the token.
if (Lexer::getRawToken(L, T, SM, LangOpts))
return SourceLocation();
if (T.isOneOf(TK, TKs...))
return T.getLocation();
Start = L;
}
}
template <typename TokenKind, typename... TokenKinds>
SourceLocation findNextAnyTokenKind(SourceLocation Start,
const SourceManager &SM,
const LangOptions &LangOpts, TokenKind TK,
TokenKinds... TKs) {
while (true) {
Optional<Token> CurrentToken = Lexer::findNextToken(Start, SM, LangOpts);
if (!CurrentToken)
return SourceLocation();
Token PotentialMatch = *CurrentToken;
if (PotentialMatch.isOneOf(TK, TKs...))
return PotentialMatch.getLocation();
Start = PotentialMatch.getLastLoc();
}
}
/// Re-lex the provide \p Range and return \c false if either a macro spans
/// multiple tokens, a pre-processor directive or failure to retrieve the
/// next token is found, otherwise \c true.
bool rangeContainsExpansionsOrDirectives(SourceRange Range,
const SourceManager &SM,
const LangOptions &LangOpts);
/// Assuming that ``Range`` spans a const-qualified type, returns the ``const``
/// token in ``Range`` that is responsible for const qualification. ``Range``
/// must be valid with respect to ``SM``. Returns ``None`` if no ``const``
/// tokens are found.
llvm::Optional<Token> getConstQualifyingToken(CharSourceRange Range,
const ASTContext &Context,
const SourceManager &SM);
} // namespace lexer
} // namespace utils
} // namespace tidy
} // namespace clang
#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_UTILS_LEXER_UTILS_H
|
