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
|
/*
This file is part of solidity.
solidity 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.
solidity 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 solidity. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* Component that verifies overloads, abstract contracts, function clashes and others
* checks at contract or function level.
*/
#pragma once
#include <libsolidity/ast/ASTForward.h>
#include <map>
namespace langutil
{
class ErrorReporter;
}
namespace dev
{
namespace solidity
{
/**
* Component that verifies overloads, abstract contracts, function clashes and others
* checks at contract or function level.
*/
class ContractLevelChecker
{
public:
/// @param _errorReporter provides the error logging functionality.
explicit ContractLevelChecker(langutil::ErrorReporter& _errorReporter):
m_errorReporter(_errorReporter)
{}
/// Performs checks on the given contract.
/// @returns true iff all checks passed. Note even if all checks passed, errors() can still contain warnings
bool check(ContractDefinition const& _contract);
private:
/// Checks that two functions defined in this contract with the same name have different
/// arguments and that there is at most one constructor.
void checkDuplicateFunctions(ContractDefinition const& _contract);
void checkDuplicateEvents(ContractDefinition const& _contract);
template <class T>
void findDuplicateDefinitions(std::map<std::string, std::vector<T>> const& _definitions, std::string _message);
void checkIllegalOverrides(ContractDefinition const& _contract);
/// Reports a type error with an appropriate message if overridden function signature differs.
/// Also stores the direct super function in the AST annotations.
void checkFunctionOverride(FunctionDefinition const& function, FunctionDefinition const& super);
void overrideError(FunctionDefinition const& function, FunctionDefinition const& super, std::string message);
void checkAbstractFunctions(ContractDefinition const& _contract);
void checkBaseConstructorArguments(ContractDefinition const& _contract);
void annotateBaseConstructorArguments(
ContractDefinition const& _currentContract,
FunctionDefinition const* _baseConstructor,
ASTNode const* _argumentNode
);
void checkConstructor(ContractDefinition const& _contract);
void checkFallbackFunction(ContractDefinition const& _contract);
/// Checks that different functions with external visibility end up having different
/// external argument types (i.e. different signature).
void checkExternalTypeClashes(ContractDefinition const& _contract);
/// Checks for hash collisions in external function signatures.
void checkHashCollisions(ContractDefinition const& _contract);
/// Checks that all requirements for a library are fulfilled if this is a library.
void checkLibraryRequirements(ContractDefinition const& _contract);
langutil::ErrorReporter& m_errorReporter;
};
}
}
|
