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
232
233
234
235
236
237
238
239
240
241
|
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing for details. */
#define cmListFileCache_cxx
#include "cmListFileCache.h"
#include <memory>
#include <sstream>
#include <utility>
#include "cmListFileLexer.h"
struct cmListFileParser
{
cmListFileParser(cmListFile* lf, std::string &error);
~cmListFileParser();
cmListFileParser(const cmListFileParser&) = delete;
cmListFileParser& operator=(const cmListFileParser&) = delete;
void IssueError(std::string const& text) const;
bool ParseFile(const char* filename);
bool ParseString(const std::string &str, const std::string &virtual_filename);
bool Parse();
bool ParseFunction(const char* name, long line);
bool AddArgument(cmListFileLexer_Token* token,
cmListFileArgument::Delimiter delim);
cmListFile* ListFile;
cmListFileLexer* Lexer;
std::string FunctionName;
long FunctionLine;
long FunctionLineEnd;
std::vector<cmListFileArgument> FunctionArguments;
std::string &Error;
enum
{
SeparationOkay,
SeparationWarning,
SeparationError
} Separation;
};
cmListFileParser::cmListFileParser(cmListFile *lf, std::string &error)
: ListFile(lf)
, Lexer(cmListFileLexer_New())
, Error(error)
{
}
cmListFileParser::~cmListFileParser()
{
cmListFileLexer_Delete(this->Lexer);
}
void cmListFileParser::IssueError(const std::string& text) const
{
Error += text;
Error += "\n";
}
bool cmListFileParser::ParseString(const std::string &str,
const std::string &/*virtual_filename*/)
{
if (!cmListFileLexer_SetString(this->Lexer, str.c_str(), (int)str.size())) {
this->IssueError("cmListFileCache: cannot allocate buffer.");
return false;
}
return this->Parse();
}
bool cmListFileParser::Parse()
{
// Use a simple recursive-descent parser to process the token
// stream.
bool haveNewline = true;
while (cmListFileLexer_Token* token = cmListFileLexer_Scan(this->Lexer)) {
if (token->type == cmListFileLexer_Token_Space) {
} else if (token->type == cmListFileLexer_Token_Newline) {
haveNewline = true;
} else if (token->type == cmListFileLexer_Token_CommentBracket
|| token->type == cmListFileLexer_Token_CommentLine) {
haveNewline = false;
} else if (token->type == cmListFileLexer_Token_Identifier) {
if (haveNewline) {
haveNewline = false;
if (this->ParseFunction(token->text, token->line)) {
this->ListFile->Functions.emplace_back(
std::move(this->FunctionName), this->FunctionLine,
this->FunctionLineEnd, std::move(this->FunctionArguments));
} else {
return false;
}
} else {
std::ostringstream error;
error << "Parse error. Expected a newline, got "
<< cmListFileLexer_GetTypeAsString(this->Lexer, token->type)
<< " with text \"" << token->text << "\".";
this->IssueError(error.str());
return false;
}
} else {
std::ostringstream error;
error << "Parse error. Expected a command name, got "
<< cmListFileLexer_GetTypeAsString(this->Lexer, token->type)
<< " with text \"" << token->text << "\".";
this->IssueError(error.str());
return false;
}
}
return true;
}
bool cmListFile::ParseString(const std::string &str, const std::string& virtual_filename, std::string &error)
{
bool parseError = false;
{
cmListFileParser parser(this, error);
parseError = !parser.ParseString(str, virtual_filename);
}
return !parseError;
}
bool cmListFileParser::ParseFunction(const char* name, long line)
{
// Ininitialize a new function call.
this->FunctionName = name;
this->FunctionLine = line;
// Command name has already been parsed. Read the left paren.
cmListFileLexer_Token* token;
while ((token = cmListFileLexer_Scan(this->Lexer)) &&
token->type == cmListFileLexer_Token_Space) {
}
if (!token) {
std::ostringstream error;
/* clang-format off */
error << "Unexpected end of file.\n"
<< "Parse error. Function missing opening \"(\".";
/* clang-format on */
this->IssueError(error.str());
return false;
}
if (token->type != cmListFileLexer_Token_ParenLeft) {
std::ostringstream error;
error << "Parse error. Expected \"(\", got "
<< cmListFileLexer_GetTypeAsString(this->Lexer, token->type)
<< " with text \"" << token->text << "\".";
this->IssueError(error.str());
return false;
}
// Arguments.
unsigned long parenDepth = 0;
this->Separation = SeparationOkay;
while ((token = cmListFileLexer_Scan(this->Lexer))) {
if (token->type == cmListFileLexer_Token_Space ||
token->type == cmListFileLexer_Token_Newline) {
this->Separation = SeparationOkay;
continue;
}
if (token->type == cmListFileLexer_Token_ParenLeft) {
parenDepth++;
this->Separation = SeparationOkay;
if (!this->AddArgument(token, cmListFileArgument::Unquoted)) {
return false;
}
} else if (token->type == cmListFileLexer_Token_ParenRight) {
if (parenDepth == 0) {
this->FunctionLineEnd = token->line;
return true;
}
parenDepth--;
this->Separation = SeparationOkay;
if (!this->AddArgument(token, cmListFileArgument::Unquoted)) {
return false;
}
this->Separation = SeparationWarning;
} else if (token->type == cmListFileLexer_Token_Identifier ||
token->type == cmListFileLexer_Token_ArgumentUnquoted) {
if (!this->AddArgument(token, cmListFileArgument::Unquoted)) {
return false;
}
this->Separation = SeparationWarning;
} else if (token->type == cmListFileLexer_Token_ArgumentQuoted) {
if (!this->AddArgument(token, cmListFileArgument::Quoted)) {
return false;
}
this->Separation = SeparationWarning;
} else if (token->type == cmListFileLexer_Token_CommentLine) {
if (!this->AddArgument(token, cmListFileArgument::Comment)) {
return false;
}
this->Separation = SeparationWarning;
} else if (token->type == cmListFileLexer_Token_ArgumentBracket) {
if (!this->AddArgument(token, cmListFileArgument::Bracket)) {
return false;
}
this->Separation = SeparationError;
} else if (token->type == cmListFileLexer_Token_CommentBracket) {
this->Separation = SeparationError;
} else {
// Error.
std::ostringstream error;
error << "Parse error. Function missing ending \")\". "
<< "Instead found "
<< cmListFileLexer_GetTypeAsString(this->Lexer, token->type)
<< " with text \"" << token->text << "\".";
this->IssueError(error.str());
return false;
}
}
std::ostringstream error;
error << "Parse error. Function missing ending \")\". "
<< "End of file reached.";
IssueError(error.str());
return false;
}
bool cmListFileParser::AddArgument(cmListFileLexer_Token* token,
cmListFileArgument::Delimiter delim)
{
this->FunctionArguments.emplace_back(token->text, delim, token->line, token->column);
if (this->Separation == SeparationOkay) {
return true;
}
bool isError = (this->Separation == SeparationError ||
delim == cmListFileArgument::Bracket);
std::ostringstream m;
m << "Syntax " << (isError ? "Error" : "Warning") << " in cmake code at "
<< "column " << token->column << "\n"
<< "Argument not separated from preceding token by whitespace.";
/* clang-format on */
if (isError) {
IssueError(m.str());
return false;
}
return true;
}
|
