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
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
|
/*
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/>.
*/
/**
* @author Christian <c@ethdev.com>
* @date 2017
* Converts a parsed assembly into its textual form.
*/
#include <libsolidity/inlineasm/AsmPrinter.h>
#include <libsolidity/inlineasm/AsmData.h>
#include <libsolidity/interface/Exceptions.h>
#include <boost/algorithm/string.hpp>
#include <boost/algorithm/string/replace.hpp>
#include <boost/range/adaptor/transformed.hpp>
#include <memory>
#include <functional>
using namespace std;
using namespace dev;
using namespace dev::solidity;
using namespace dev::solidity::assembly;
//@TODO source locations
string AsmPrinter::operator()(assembly::Instruction const& _instruction)
{
solAssert(!m_yul, "");
return boost::to_lower_copy(instructionInfo(_instruction.instruction).name);
}
string AsmPrinter::operator()(assembly::Literal const& _literal)
{
switch (_literal.kind)
{
case LiteralKind::Number:
return _literal.value + appendTypeName(_literal.type);
case LiteralKind::Boolean:
return ((_literal.value == "true") ? "true" : "false") + appendTypeName(_literal.type);
case LiteralKind::String:
break;
}
string out;
for (char c: _literal.value)
if (c == '\\')
out += "\\\\";
else if (c == '"')
out += "\\\"";
else if (c == '\b')
out += "\\b";
else if (c == '\f')
out += "\\f";
else if (c == '\n')
out += "\\n";
else if (c == '\r')
out += "\\r";
else if (c == '\t')
out += "\\t";
else if (c == '\v')
out += "\\v";
else if (!isprint(c, locale::classic()))
{
ostringstream o;
o << std::hex << setfill('0') << setw(2) << (unsigned)(unsigned char)(c);
out += "\\x" + o.str();
}
else
out += c;
return "\"" + out + "\"" + appendTypeName(_literal.type);
}
string AsmPrinter::operator()(assembly::Identifier const& _identifier)
{
return _identifier.name;
}
string AsmPrinter::operator()(assembly::FunctionalInstruction const& _functionalInstruction)
{
solAssert(!m_yul, "");
return
boost::to_lower_copy(instructionInfo(_functionalInstruction.instruction).name) +
"(" +
boost::algorithm::join(
_functionalInstruction.arguments | boost::adaptors::transformed(boost::apply_visitor(*this)),
", " ) +
")";
}
string AsmPrinter::operator()(ExpressionStatement const& _statement)
{
return boost::apply_visitor(*this, _statement.expression);
}
string AsmPrinter::operator()(assembly::Label const& _label)
{
solAssert(!m_yul, "");
return _label.name + ":";
}
string AsmPrinter::operator()(assembly::StackAssignment const& _assignment)
{
solAssert(!m_yul, "");
return "=: " + (*this)(_assignment.variableName);
}
string AsmPrinter::operator()(assembly::Assignment const& _assignment)
{
solAssert(_assignment.variableNames.size() >= 1, "");
string variables = (*this)(_assignment.variableNames.front());
for (size_t i = 1; i < _assignment.variableNames.size(); ++i)
variables += ", " + (*this)(_assignment.variableNames[i]);
return variables + " := " + boost::apply_visitor(*this, *_assignment.value);
}
string AsmPrinter::operator()(assembly::VariableDeclaration const& _variableDeclaration)
{
string out = "let ";
out += boost::algorithm::join(
_variableDeclaration.variables | boost::adaptors::transformed(
[this](TypedName variable) { return variable.name + appendTypeName(variable.type); }
),
", "
);
if (_variableDeclaration.value)
{
out += " := ";
out += boost::apply_visitor(*this, *_variableDeclaration.value);
}
return out;
}
string AsmPrinter::operator()(assembly::FunctionDefinition const& _functionDefinition)
{
string out = "function " + _functionDefinition.name + "(";
out += boost::algorithm::join(
_functionDefinition.parameters | boost::adaptors::transformed(
[this](TypedName argument) { return argument.name + appendTypeName(argument.type); }
),
", "
);
out += ")";
if (!_functionDefinition.returnVariables.empty())
{
out += " -> ";
out += boost::algorithm::join(
_functionDefinition.returnVariables | boost::adaptors::transformed(
[this](TypedName argument) { return argument.name + appendTypeName(argument.type); }
),
", "
);
}
return out + "\n" + (*this)(_functionDefinition.body);
}
string AsmPrinter::operator()(assembly::FunctionCall const& _functionCall)
{
return
(*this)(_functionCall.functionName) + "(" +
boost::algorithm::join(
_functionCall.arguments | boost::adaptors::transformed(boost::apply_visitor(*this)),
", " ) +
")";
}
string AsmPrinter::operator()(If const& _if)
{
return "if " + boost::apply_visitor(*this, *_if.condition) + "\n" + (*this)(_if.body);
}
string AsmPrinter::operator()(Switch const& _switch)
{
string out = "switch " + boost::apply_visitor(*this, *_switch.expression);
for (auto const& _case: _switch.cases)
{
if (!_case.value)
out += "\ndefault ";
else
out += "\ncase " + (*this)(*_case.value) + " ";
out += (*this)(_case.body);
}
return out;
}
string AsmPrinter::operator()(assembly::ForLoop const& _forLoop)
{
string out = "for ";
out += (*this)(_forLoop.pre);
out += "\n";
out += boost::apply_visitor(*this, *_forLoop.condition);
out += "\n";
out += (*this)(_forLoop.post);
out += "\n";
out += (*this)(_forLoop.body);
return out;
}
string AsmPrinter::operator()(Block const& _block)
{
if (_block.statements.empty())
return "{\n}";
string body = boost::algorithm::join(
_block.statements | boost::adaptors::transformed(boost::apply_visitor(*this)),
"\n"
);
boost::replace_all(body, "\n", "\n ");
return "{\n " + body + "\n}";
}
string AsmPrinter::appendTypeName(std::string const& _type) const
{
if (m_yul)
return ":" + _type;
return "";
}
|
