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
|
/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @author Christian <c@ethdev.com>
* @date 2014
* Component that resolves type names to types and annotates the AST accordingly.
*/
#pragma once
#include <map>
#include <list>
#include <boost/noncopyable.hpp>
#include <libsolidity/ast/ASTVisitor.h>
#include <libsolidity/ast/ASTAnnotations.h>
namespace dev
{
namespace solidity
{
class NameAndTypeResolver;
/**
* Resolves references to declarations (of variables and types) and also establishes the link
* between a return statement and the return parameter list.
*/
class ReferencesResolver: private ASTConstVisitor
{
public:
ReferencesResolver(
ErrorList& _errors,
NameAndTypeResolver& _resolver,
ContractDefinition const* _currentContract,
ParameterList const* _returnParameters,
bool _resolveInsideCode = false
):
m_errors(_errors),
m_resolver(_resolver),
m_currentContract(_currentContract),
m_returnParameters(_returnParameters),
m_resolveInsideCode(_resolveInsideCode)
{}
/// @returns true if no errors during resolving
bool resolve(ASTNode& _root)
{
_root.accept(*this);
return true;//m_errors.empty();
}
private:
virtual bool visit(Block const&) override { return m_resolveInsideCode; }
virtual bool visit(Identifier const& _identifier) override;
virtual bool visit(UserDefinedTypeName const& _typeName) override;
virtual bool visit(Return const& _return) override;
virtual void endVisit(VariableDeclaration const& _variable) override;
TypePointer typeFor(TypeName const& _typeName);
/// Adds a new error to the list of errors.
void typeError(std::string const& _description, SourceLocation const& _location);
/// Adds a new error to the list of errors and throws to abort type checking.
void fatalTypeError(std::string const& _description);
ErrorList& m_errors;
NameAndTypeResolver& m_resolver;
ContractDefinition const* m_currentContract;
ParameterList const* m_returnParameters;
bool m_resolveInsideCode;
};
}
}
|
