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
132
133
134
135
136
137
138
139
140
141
142
143
144
|
//===--- InstrumenterSupport.cpp - Instrumenter Support -------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
//
// This file implements the supporting functions for writing instrumenters of
// the Swift AST.
//
//===----------------------------------------------------------------------===//
#include "InstrumenterSupport.h"
#include "swift/AST/DiagnosticSuppression.h"
#include "swift/AST/SourceFile.h"
#include "swift/Demangling/Punycode.h"
#include "llvm/Support/Path.h"
using namespace swift;
using namespace swift::instrumenter_support;
namespace {
class ErrorGatherer : public DiagnosticConsumer {
private:
bool error = false;
DiagnosticEngine &diags;
public:
ErrorGatherer(DiagnosticEngine &diags) : diags(diags) {
diags.addConsumer(*this);
}
~ErrorGatherer() override { diags.takeConsumers(); }
void handleDiagnostic(SourceManager &SM,
const DiagnosticInfo &Info) override {
if (Info.Kind == swift::DiagnosticKind::Error) {
error = true;
}
DiagnosticEngine::formatDiagnosticText(llvm::errs(), Info.FormatString,
Info.FormatArgs);
llvm::errs() << "\n";
}
bool hadError() { return error; }
};
class ErrorFinder : public ASTWalker {
bool error = false;
public:
ErrorFinder() {}
MacroWalking getMacroWalkingBehavior() const override {
return MacroWalking::Expansion;
}
PreWalkResult<Expr *> walkToExprPre(Expr *E) override {
if (isa<ErrorExpr>(E) || !E->getType() || E->getType()->hasError())
error = true;
return Action::StopIf(error, E);
}
PreWalkAction walkToDeclPre(Decl *D) override {
if (auto *VD = dyn_cast<ValueDecl>(D)) {
if (!VD->hasInterfaceType() || VD->getInterfaceType()->hasError())
error = true;
}
return Action::StopIf(error);
}
bool hadError() { return error; }
};
} // end anonymous namespace
InstrumenterBase::InstrumenterBase(ASTContext &C, DeclContext *DC)
: Context(C), TypeCheckDC(DC), CF(*this) {
// Prefixes for module and file vars
const std::string builtinPrefix = "__builtin";
const std::string modulePrefix = "_pg_module_";
const std::string filePrefix = "_pg_file_";
// Setup Module identifier
std::string moduleName =
std::string(TypeCheckDC->getParentModule()->getName());
Identifier moduleIdentifier =
Context.getIdentifier(builtinPrefix + modulePrefix + moduleName);
SmallVector<ValueDecl *, 1> results;
TypeCheckDC->getParentModule()->lookupValue(
moduleIdentifier, NLKind::UnqualifiedLookup, results);
if (results.size() == 1)
ModuleIdentifier = results.front()->createNameRef();
// Setup File identifier
StringRef filePath = TypeCheckDC->getParentSourceFile()->getFilename();
StringRef fileName = llvm::sys::path::stem(filePath);
std::string filePunycodeName;
Punycode::encodePunycodeUTF8(fileName, filePunycodeName, true);
Identifier fileIdentifier =
Context.getIdentifier(builtinPrefix + modulePrefix + moduleName +
filePrefix + filePunycodeName);
results.clear();
TypeCheckDC->getParentModule()->lookupValue(
fileIdentifier, NLKind::UnqualifiedLookup, results);
if (results.size() == 1)
FileIdentifier = results.front()->createNameRef();
}
void InstrumenterBase::anchor() {}
bool InstrumenterBase::doTypeCheckImpl(ASTContext &Ctx, DeclContext *DC,
Expr * &parsedExpr) {
DiagnosticSuppression suppression(Ctx.Diags);
ErrorGatherer errorGatherer(Ctx.Diags);
TypeChecker::typeCheckExpression(parsedExpr, DC, /*contextualInfo=*/{});
if (parsedExpr) {
ErrorFinder errorFinder;
parsedExpr->walk(errorFinder);
if (!errorFinder.hadError() && !errorGatherer.hadError()) {
return true;
}
}
return false;
}
Expr *InstrumenterBase::buildIDArgumentExpr(std::optional<DeclNameRef> name,
SourceRange SR) {
if (!name)
return IntegerLiteralExpr::createFromUnsigned(Context, 0, SR.End);
return new (Context) UnresolvedDeclRefExpr(*name, DeclRefKind::Ordinary,
DeclNameLoc(SR.End));
}
|
