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
/*
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/>.
*/
// SPDX-License-Identifier: GPL-3.0
#pragma once
#include <libyul/ASTForward.h>
#include <libyul/optimiser/ASTWalker.h>
#include <libyul/YulString.h>
#include <libyul/optimiser/OptimiserStep.h>
#include <map>
#include <set>
#include <string>
namespace solidity::yul
{
struct Dialect;
/**
* Pass to "simplify" all identifier names.
*
* The purpose of this is to make generated code more readable, but also
* to remove AST identifiers that could lead to a different sorting order
* and thus influence e.g. the order of function inlining.
*
* Prerequisites: Disambiguator, FunctionHoister, FunctionGrouper
*/
class NameSimplifier: public ASTModifier
{
public:
static constexpr char const* name{"NameSimplifier"};
static void run(OptimiserStepContext& _context, Block& _ast)
{
NameSimplifier{_context, _ast}(_ast);
}
using ASTModifier::operator();
void operator()(VariableDeclaration& _varDecl) override;
void operator()(Identifier& _identifier) override;
void operator()(FunctionCall& _funCall) override;
void operator()(FunctionDefinition& _funDef) override;
private:
NameSimplifier(OptimiserStepContext& _context, Block const& _ast);
/// Tries to rename a list of variables.
void renameVariables(std::vector<TypedName>& _variables);
void findSimplification(YulString const& _name);
void translate(YulString& _name);
OptimiserStepContext& m_context;
std::map<YulString, YulString> m_translations;
};
}