clang 19.0.0git
PPConditionalDirectiveRecord.cpp
Go to the documentation of this file.
1//===--- PPConditionalDirectiveRecord.h - Preprocessing Directives-*- 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// This file implements the PPConditionalDirectiveRecord class, which maintains
10// a record of conditional directive regions.
11//
12//===----------------------------------------------------------------------===//
14#include "llvm/Support/Capacity.h"
15
16using namespace clang;
17
19 : SourceMgr(SM) {
20 CondDirectiveStack.push_back(SourceLocation());
21}
22
24 SourceRange Range) const {
25 if (Range.isInvalid())
26 return false;
27
28 CondDirectiveLocsTy::const_iterator low = llvm::lower_bound(
29 CondDirectiveLocs, Range.getBegin(), CondDirectiveLoc::Comp(SourceMgr));
30 if (low == CondDirectiveLocs.end())
31 return false;
32
33 if (SourceMgr.isBeforeInTranslationUnit(Range.getEnd(), low->getLoc()))
34 return false;
35
36 CondDirectiveLocsTy::const_iterator
37 upp = std::upper_bound(low, CondDirectiveLocs.end(),
38 Range.getEnd(), CondDirectiveLoc::Comp(SourceMgr));
39 SourceLocation uppRegion;
40 if (upp != CondDirectiveLocs.end())
41 uppRegion = upp->getRegionLoc();
42
43 return low->getRegionLoc() != uppRegion;
44}
45
47 SourceLocation Loc) const {
48 if (Loc.isInvalid())
49 return SourceLocation();
50 if (CondDirectiveLocs.empty())
51 return SourceLocation();
52
53 if (SourceMgr.isBeforeInTranslationUnit(CondDirectiveLocs.back().getLoc(),
54 Loc))
55 return CondDirectiveStack.back();
56
57 CondDirectiveLocsTy::const_iterator low = llvm::lower_bound(
58 CondDirectiveLocs, Loc, CondDirectiveLoc::Comp(SourceMgr));
59 assert(low != CondDirectiveLocs.end());
60 return low->getRegionLoc();
61}
62
63void PPConditionalDirectiveRecord::addCondDirectiveLoc(
64 CondDirectiveLoc DirLoc) {
65 // Ignore directives in system headers.
66 if (SourceMgr.isInSystemHeader(DirLoc.getLoc()))
67 return;
68
69 assert(CondDirectiveLocs.empty() ||
70 SourceMgr.isBeforeInTranslationUnit(CondDirectiveLocs.back().getLoc(),
71 DirLoc.getLoc()));
72 CondDirectiveLocs.push_back(DirLoc);
73}
74
75void PPConditionalDirectiveRecord::If(SourceLocation Loc,
76 SourceRange ConditionRange,
77 ConditionValueKind ConditionValue) {
78 addCondDirectiveLoc(CondDirectiveLoc(Loc, CondDirectiveStack.back()));
79 CondDirectiveStack.push_back(Loc);
80}
81
82void PPConditionalDirectiveRecord::Ifdef(SourceLocation Loc,
83 const Token &MacroNameTok,
84 const MacroDefinition &MD) {
85 addCondDirectiveLoc(CondDirectiveLoc(Loc, CondDirectiveStack.back()));
86 CondDirectiveStack.push_back(Loc);
87}
88
89void PPConditionalDirectiveRecord::Ifndef(SourceLocation Loc,
90 const Token &MacroNameTok,
91 const MacroDefinition &MD) {
92 addCondDirectiveLoc(CondDirectiveLoc(Loc, CondDirectiveStack.back()));
93 CondDirectiveStack.push_back(Loc);
94}
95
96void PPConditionalDirectiveRecord::Elif(SourceLocation Loc,
97 SourceRange ConditionRange,
98 ConditionValueKind ConditionValue,
99 SourceLocation IfLoc) {
100 addCondDirectiveLoc(CondDirectiveLoc(Loc, CondDirectiveStack.back()));
101 CondDirectiveStack.back() = Loc;
102}
103
104void PPConditionalDirectiveRecord::Elifdef(SourceLocation Loc, const Token &,
105 const MacroDefinition &) {
106 addCondDirectiveLoc(CondDirectiveLoc(Loc, CondDirectiveStack.back()));
107 CondDirectiveStack.back() = Loc;
108}
109void PPConditionalDirectiveRecord::Elifdef(SourceLocation Loc, SourceRange,
111 addCondDirectiveLoc(CondDirectiveLoc(Loc, CondDirectiveStack.back()));
112 CondDirectiveStack.back() = Loc;
113}
114
115void PPConditionalDirectiveRecord::Elifndef(SourceLocation Loc, const Token &,
116 const MacroDefinition &) {
117 addCondDirectiveLoc(CondDirectiveLoc(Loc, CondDirectiveStack.back()));
118 CondDirectiveStack.back() = Loc;
119}
120void PPConditionalDirectiveRecord::Elifndef(SourceLocation Loc, SourceRange,
122 addCondDirectiveLoc(CondDirectiveLoc(Loc, CondDirectiveStack.back()));
123 CondDirectiveStack.back() = Loc;
124}
125
126void PPConditionalDirectiveRecord::Else(SourceLocation Loc,
127 SourceLocation IfLoc) {
128 addCondDirectiveLoc(CondDirectiveLoc(Loc, CondDirectiveStack.back()));
129 CondDirectiveStack.back() = Loc;
130}
131
132void PPConditionalDirectiveRecord::Endif(SourceLocation Loc,
133 SourceLocation IfLoc) {
134 addCondDirectiveLoc(CondDirectiveLoc(Loc, CondDirectiveStack.back()));
135 assert(!CondDirectiveStack.empty());
136 CondDirectiveStack.pop_back();
137}
138
140 return llvm::capacity_in_bytes(CondDirectiveLocs);
141}
#define SM(sm)
Definition: Cuda.cpp:84
SourceRange Range
Definition: SemaObjC.cpp:757
SourceLocation Loc
Definition: SemaObjC.cpp:758
A description of the current definition of a macro.
Definition: MacroInfo.h:590
PPConditionalDirectiveRecord(SourceManager &SM)
Construct a new preprocessing record.
bool rangeIntersectsConditionalDirective(SourceRange Range) const
Returns true if the given range intersects with a conditional directive.
SourceLocation findConditionalDirectiveRegionLoc(SourceLocation Loc) const
Encodes a location in the source.
This class handles loading and caching of source files into memory.
bool isInSystemHeader(SourceLocation Loc) const
Returns if a SourceLocation is in a system header.
bool isBeforeInTranslationUnit(SourceLocation LHS, SourceLocation RHS) const
Determines the order of 2 source locations in the translation unit.
A trivial tuple used to represent a source range.
bool isInvalid() const
SourceLocation getEnd() const
SourceLocation getBegin() const
Token - This structure provides full information about a lexed token.
Definition: Token.h:36
The JSON file list parser is used to communicate input to InstallAPI.