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
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
//== AnalysisContext.cpp - Analysis context for Path Sens analysis -*- C++ -*-//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines AnalysisContext, a class that manages the analysis context
// data for path sensitive analysis.
//
//===----------------------------------------------------------------------===//
#include "clang/Analysis/PathSensitive/AnalysisContext.h"
#include "clang/Analysis/Analyses/LiveVariables.h"
#include "clang/Analysis/CFG.h"
#include "clang/AST/Decl.h"
#include "clang/AST/DeclObjC.h"
#include "clang/AST/ParentMap.h"
#include "llvm/Support/ErrorHandling.h"
using namespace clang;
AnalysisContext::~AnalysisContext() {
delete cfg;
delete liveness;
delete PM;
}
Stmt *AnalysisContext::getBody() {
if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D))
return FD->getBody();
else if (ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(D))
return MD->getBody();
llvm::llvm_unreachable("unknown code decl");
}
const ImplicitParamDecl *AnalysisContext::getSelfDecl() const {
if (const ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(D))
return MD->getSelfDecl();
return NULL;
}
CFG *AnalysisContext::getCFG() {
if (!cfg)
cfg = CFG::buildCFG(getBody(), &D->getASTContext());
return cfg;
}
ParentMap &AnalysisContext::getParentMap() {
if (!PM)
PM = new ParentMap(getBody());
return *PM;
}
LiveVariables *AnalysisContext::getLiveVariables() {
if (!liveness) {
CFG *c = getCFG();
if (!c)
return 0;
liveness = new LiveVariables(D->getASTContext(), *c);
liveness->runOnCFG(*c);
liveness->runOnAllBlocks(*c, 0, true);
}
return liveness;
}
AnalysisContext *AnalysisContextManager::getContext(Decl *D) {
iterator I = Contexts.find(D);
if (I != Contexts.end())
return &(I->second);
AnalysisContext &Ctx = Contexts[D];
Ctx.setDecl(D);
return &Ctx;
}
void LocationContext::Profile(llvm::FoldingSetNodeID &ID, ContextKind k,
AnalysisContext *ctx, LocationContext *parent) {
ID.AddInteger(k);
ID.AddPointer(ctx);
ID.AddPointer(parent);
}
void StackFrameContext::Profile(llvm::FoldingSetNodeID &ID,AnalysisContext *ctx,
LocationContext *parent, Stmt *s) {
LocationContext::Profile(ID, StackFrame, ctx, parent);
ID.AddPointer(s);
}
void ScopeContext::Profile(llvm::FoldingSetNodeID &ID, AnalysisContext *ctx,
LocationContext *parent, Stmt *s) {
LocationContext::Profile(ID, Scope, ctx, parent);
ID.AddPointer(s);
}
StackFrameContext *LocationContextManager::getStackFrame(AnalysisContext *ctx,
LocationContext *parent, Stmt *s) {
llvm::FoldingSetNodeID ID;
StackFrameContext::Profile(ID, ctx, parent, s);
void *InsertPos;
StackFrameContext *f =
cast_or_null<StackFrameContext>(Contexts.FindNodeOrInsertPos(ID, InsertPos));
if (!f) {
f = new StackFrameContext(ctx, parent, s);
Contexts.InsertNode(f, InsertPos);
}
return f;
}
ScopeContext *LocationContextManager::getScope(AnalysisContext *ctx,
LocationContext *parent, Stmt *s) {
llvm::FoldingSetNodeID ID;
ScopeContext::Profile(ID, ctx, parent, s);
void *InsertPos;
ScopeContext *scope =
cast_or_null<ScopeContext>(Contexts.FindNodeOrInsertPos(ID, InsertPos));
if (!scope) {
scope = new ScopeContext(ctx, parent, s);
Contexts.InsertNode(scope, InsertPos);
}
return scope;
}
|
