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
/*
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
/**
* Optimiser component that identifies functions to be inlined.
*/
#pragma once
#include <libyul/ASTForward.h>
#include <libyul/optimiser/ASTWalker.h>
#include <set>
namespace solidity::yul
{
/**
* Optimiser component that finds functions that can be
* inlined inside functional expressions, i.e. functions that
* - have a single return parameter r
* - have a body like r := <functional expression>
* - neither reference themselves nor r in the right hand side
*
* This component can only be used on sources with unique names.
*/
class InlinableExpressionFunctionFinder: public ASTWalker
{
public:
std::map<YulString, FunctionDefinition const*> const& inlinableFunctions() const
{
return m_inlinableFunctions;
}
using ASTWalker::operator();
void operator()(Identifier const& _identifier) override;
void operator()(FunctionCall const& _funCall) override;
void operator()(FunctionDefinition const& _function) override;
private:
void checkAllowed(YulString _name)
{
if (m_disallowedIdentifiers.count(_name))
m_foundDisallowedIdentifier = true;
}
bool m_foundDisallowedIdentifier = false;
std::set<YulString> m_disallowedIdentifiers;
std::map<YulString, FunctionDefinition const*> m_inlinableFunctions;
};
}