1 |
schoenebeck |
2885 |
/* |
2 |
|
|
* Copyright (c) 2015-2016 Christian Schoenebeck |
3 |
|
|
* |
4 |
|
|
* http://www.linuxsampler.org |
5 |
|
|
* |
6 |
|
|
* This file is part of LinuxSampler and released under the same terms. |
7 |
|
|
* See README file for details. |
8 |
|
|
*/ |
9 |
|
|
|
10 |
|
|
/* Token scanner used for generating syntax highlighting for NKSP instrument |
11 |
|
|
script language code (this is not used by the sampler itself, but rather |
12 |
|
|
provided for external script editor applications). */ |
13 |
|
|
|
14 |
|
|
%{ |
15 |
|
|
|
16 |
|
|
#include "NkspScanner.h" |
17 |
|
|
// reentrant scanner data context |
18 |
|
|
#define YY_EXTRA_TYPE NkspScanner* |
19 |
|
|
// custom (f)lex input for reading from std::istream object |
20 |
|
|
#define YY_INPUT(buf,result,max_size) \ |
21 |
|
|
{ \ |
22 |
|
|
char c = yyextra->is->get(); \ |
23 |
|
|
if (yyextra->is->eof()) \ |
24 |
|
|
result = YY_NULL; \ |
25 |
|
|
else { \ |
26 |
|
|
buf[0] = c; \ |
27 |
|
|
result = 1; \ |
28 |
|
|
} \ |
29 |
|
|
} |
30 |
|
|
// handle position (line, column) for each recognized token |
31 |
|
|
#define YY_USER_ACTION \ |
32 |
|
|
yyextra->line = yylineno - 1; \ |
33 |
|
|
yyextra->column = yycolumn; \ |
34 |
|
|
yycolumn += yyleng; |
35 |
|
|
|
36 |
|
|
using namespace LinuxSampler; |
37 |
|
|
|
38 |
|
|
static int countNewLineChars(const char* txt) { |
39 |
|
|
int n = 0; |
40 |
|
|
for (int i = 0; txt[i]; ++i) |
41 |
|
|
if (txt[i] == '\n') ++n; |
42 |
|
|
return n; |
43 |
|
|
} |
44 |
|
|
|
45 |
|
|
%} |
46 |
|
|
|
47 |
|
|
/* generate a reentrant safe scanner */ |
48 |
|
|
%option reentrant |
49 |
|
|
/* avoid symbol collision with ones of other scanners */ |
50 |
|
|
%option prefix="Nksp_" |
51 |
|
|
/* yywrap() would be called at EOF, we don't need it */ |
52 |
|
|
%option noyywrap |
53 |
|
|
/* enable functions yy_push_state(), yy_pop_state(), yy_top_state() */ |
54 |
|
|
%option stack |
55 |
|
|
|
56 |
|
|
/* inclusive scanner conditions */ |
57 |
|
|
%s PREPROC_BODY_USE |
58 |
|
|
/* exclusive scanner conditions */ |
59 |
|
|
%x PREPROC_SET_COND PREPROC_RESET_COND PREPROC_IF PREPROC_IF_NOT PREPROC_BODY_EAT PREPROC_PRE_BODY_USE PREPROC_PRE_BODY_EAT PREPROC_EVENT_NAME PREPROC_END_NAME |
60 |
|
|
|
61 |
|
|
DIGIT [0-9] |
62 |
|
|
ID [a-zA-Z0-9_]* |
63 |
|
|
|
64 |
|
|
%% |
65 |
|
|
|
66 |
|
|
\"[^"]*\" { |
67 |
|
|
yyextra->token = StringLiteralToken(yytext); |
68 |
|
|
return yyextra->token.baseType; |
69 |
|
|
} |
70 |
|
|
|
71 |
|
|
{DIGIT}+ { |
72 |
|
|
yyextra->token = NumberLiteralToken(yytext); |
73 |
|
|
return yyextra->token.baseType; |
74 |
|
|
} |
75 |
|
|
|
76 |
|
|
{DIGIT}+"."{DIGIT}* { |
77 |
|
|
yyextra->token = NumberLiteralToken(yytext); |
78 |
|
|
return yyextra->token.baseType; |
79 |
|
|
} |
80 |
|
|
|
81 |
|
|
|
82 |
|
|
/* Preprocessor statement: SET_CONDITION(name) */ |
83 |
|
|
|
84 |
|
|
<*>"SET_CONDITION"[ \t]*"(" { |
85 |
|
|
//printf("SET_CONDITION\n"); |
86 |
|
|
yy_push_state(PREPROC_SET_COND, yyscanner); |
87 |
|
|
yyextra->token = PreprocessorToken(yytext); |
88 |
|
|
return yyextra->token.baseType; |
89 |
|
|
} |
90 |
|
|
<PREPROC_SET_COND>{ID} { |
91 |
|
|
//printf("preproc set condition '%s'\n", yytext); |
92 |
|
|
yyextra->token = PreprocessorToken(yytext); |
93 |
|
|
return yyextra->token.baseType; |
94 |
|
|
} |
95 |
|
|
<PREPROC_SET_COND>[ \t]*")" { |
96 |
|
|
//printf("End of PREPROC_SET_COND\n"); |
97 |
|
|
yy_pop_state(yyscanner); |
98 |
|
|
yyextra->token = PreprocessorToken(yytext); |
99 |
|
|
return yyextra->token.baseType; |
100 |
|
|
} |
101 |
|
|
|
102 |
|
|
|
103 |
|
|
/* Preprocessor statement: RESET_CONDITION(name) */ |
104 |
|
|
|
105 |
|
|
<*>"RESET_CONDITION"[ \t]*"(" { |
106 |
|
|
//printf("RESET_CONDITION\n"); |
107 |
|
|
yy_push_state(PREPROC_RESET_COND, yyscanner); |
108 |
|
|
yyextra->token = PreprocessorToken(yytext); |
109 |
|
|
return yyextra->token.baseType; |
110 |
|
|
} |
111 |
|
|
<PREPROC_RESET_COND>{ID} { |
112 |
|
|
//printf("preproc reset condition '%s'\n", yytext); |
113 |
|
|
yyextra->token = PreprocessorToken(yytext); |
114 |
|
|
return yyextra->token.baseType; |
115 |
|
|
} |
116 |
|
|
<PREPROC_RESET_COND>[ \t]*")" { |
117 |
|
|
//printf("End of RESET_CONDITION\n"); |
118 |
|
|
yy_pop_state(yyscanner); |
119 |
|
|
yyextra->token = PreprocessorToken(yytext); |
120 |
|
|
return yyextra->token.baseType; |
121 |
|
|
} |
122 |
|
|
|
123 |
|
|
|
124 |
|
|
/* Preprocessor conditional statements: |
125 |
|
|
|
126 |
|
|
USE_CODE_IF(name) |
127 |
|
|
... |
128 |
|
|
END_USE_CODE |
129 |
|
|
|
130 |
|
|
and: |
131 |
|
|
|
132 |
|
|
USE_CODE_IF_NOT(name) |
133 |
|
|
... |
134 |
|
|
END_USE_CODE |
135 |
|
|
*/ |
136 |
|
|
|
137 |
|
|
<*>"USE_CODE_IF"[ \t]*"(" { |
138 |
|
|
//printf("USE_CODE_IF\n"); |
139 |
|
|
yy_push_state(PREPROC_IF, yyscanner); |
140 |
|
|
yyextra->token = PreprocessorToken(yytext); |
141 |
|
|
return yyextra->token.baseType; |
142 |
|
|
} |
143 |
|
|
<*>"USE_CODE_IF_NOT"[ \t]*"(" { |
144 |
|
|
//printf("USE_CODE_IF_NOT\n"); |
145 |
|
|
yy_push_state(PREPROC_IF_NOT, yyscanner); |
146 |
|
|
yyextra->token = PreprocessorToken(yytext); |
147 |
|
|
return yyextra->token.baseType; |
148 |
|
|
} |
149 |
|
|
<PREPROC_IF>{ID} { |
150 |
|
|
//printf("preproc use code if '%s'\n", yytext); |
151 |
|
|
yy_pop_state(yyscanner); |
152 |
|
|
yy_push_state(PREPROC_PRE_BODY_USE, yyscanner); |
153 |
|
|
//yy_push_state(PREPROC_PRE_BODY_EAT, yyscanner); |
154 |
|
|
yyextra->token = PreprocessorToken(yytext); |
155 |
|
|
return yyextra->token.baseType; |
156 |
|
|
} |
157 |
|
|
<PREPROC_IF_NOT>{ID} { |
158 |
|
|
//printf("preproc use code if not '%s'\n", yytext); |
159 |
|
|
yy_pop_state(yyscanner); |
160 |
|
|
yy_push_state(PREPROC_PRE_BODY_USE, yyscanner); |
161 |
|
|
//yy_push_state(PREPROC_PRE_BODY_EAT, yyscanner); |
162 |
|
|
yyextra->token = PreprocessorToken(yytext); |
163 |
|
|
return yyextra->token.baseType; |
164 |
|
|
} |
165 |
|
|
<PREPROC_PRE_BODY_USE>[ \t]*")" { |
166 |
|
|
yy_pop_state(yyscanner); |
167 |
|
|
yy_push_state(PREPROC_BODY_USE, yyscanner); |
168 |
|
|
yyextra->token = PreprocessorToken(yytext); |
169 |
|
|
return yyextra->token.baseType; |
170 |
|
|
} |
171 |
|
|
<PREPROC_PRE_BODY_EAT>[ \t]*")" { |
172 |
|
|
//printf("PREPROCESSOR EAT : \n"); |
173 |
|
|
yy_pop_state(yyscanner); |
174 |
|
|
yy_push_state(PREPROC_BODY_EAT, yyscanner); |
175 |
|
|
yyextra->token = PreprocessorToken(yytext); |
176 |
|
|
return yyextra->token.baseType; |
177 |
|
|
} |
178 |
|
|
<*>.*"END_USE_CODE" { |
179 |
|
|
//printf("-->END_USE_CODE\n"); |
180 |
|
|
yy_pop_state(yyscanner); |
181 |
|
|
yyextra->token = PreprocessorToken(yytext); |
182 |
|
|
return yyextra->token.baseType; |
183 |
|
|
} |
184 |
|
|
<PREPROC_BODY_EAT>[ \t\r\n]* /* eat up code block filtered out by preprocessor */ |
185 |
|
|
<PREPROC_BODY_EAT>.* /* eat up code block filtered out by preprocessor */ |
186 |
|
|
|
187 |
|
|
|
188 |
|
|
/* Event Handler Names (only if they occur alone in a document!) */ |
189 |
|
|
|
190 |
|
|
^\s*(init|note|release|controller) { |
191 |
|
|
yyextra->token = EventHandlerNameToken(yytext); |
192 |
|
|
return yyextra->token.baseType; |
193 |
|
|
} |
194 |
|
|
|
195 |
|
|
|
196 |
|
|
/* Language keywords */ |
197 |
|
|
|
198 |
|
|
on { |
199 |
|
|
yy_push_state(PREPROC_EVENT_NAME, yyscanner); |
200 |
|
|
yyextra->token = KeywordToken(yytext); |
201 |
|
|
return yyextra->token.baseType; |
202 |
|
|
} |
203 |
|
|
|
204 |
|
|
<PREPROC_EVENT_NAME>[ \t]*{ID} { |
205 |
|
|
yy_pop_state(yyscanner); |
206 |
|
|
yyextra->token = EventHandlerNameToken(yytext); |
207 |
|
|
return yyextra->token.baseType; |
208 |
|
|
} |
209 |
|
|
|
210 |
|
|
end { |
211 |
|
|
yy_push_state(PREPROC_END_NAME, yyscanner); |
212 |
|
|
yyextra->token = KeywordToken(yytext); |
213 |
|
|
return yyextra->token.baseType; |
214 |
|
|
} |
215 |
|
|
|
216 |
|
|
<PREPROC_END_NAME>[ \t]*{ID} { |
217 |
|
|
yy_pop_state(yyscanner); |
218 |
|
|
yyextra->token = KeywordToken(yytext); |
219 |
|
|
return yyextra->token.baseType; |
220 |
|
|
} |
221 |
|
|
|
222 |
|
|
declare|while|if|or|and|not|else|case|select|to|mod|const|polyphonic { |
223 |
|
|
yyextra->token = KeywordToken(yytext); |
224 |
|
|
return yyextra->token.baseType; |
225 |
|
|
} |
226 |
|
|
|
227 |
|
|
|
228 |
|
|
/* Variables */ |
229 |
|
|
|
230 |
|
|
"$"{ID} { |
231 |
|
|
yyextra->token = IntegerVariableToken(yytext); |
232 |
|
|
return yyextra->token.baseType; |
233 |
|
|
} |
234 |
|
|
|
235 |
|
|
"@"{ID} { |
236 |
|
|
yyextra->token = StringVariableToken(yytext); |
237 |
|
|
return yyextra->token.baseType; |
238 |
|
|
} |
239 |
|
|
|
240 |
|
|
"%"{ID} { |
241 |
|
|
yyextra->token = ArrayVariableToken(yytext); |
242 |
|
|
return yyextra->token.baseType; |
243 |
|
|
} |
244 |
|
|
|
245 |
|
|
{ID} { |
246 |
|
|
yyextra->token = IdentifierToken(yytext); |
247 |
|
|
return yyextra->token.baseType; |
248 |
|
|
} |
249 |
|
|
|
250 |
|
|
|
251 |
|
|
/* other */ |
252 |
|
|
|
253 |
|
|
<*>\n { |
254 |
|
|
yyextra->token = NewLineToken(); |
255 |
|
|
++yylineno; |
256 |
|
|
yycolumn = 0; |
257 |
|
|
return yyextra->token.baseType; |
258 |
|
|
} |
259 |
|
|
|
260 |
|
|
"{"[^}]*"}" { |
261 |
|
|
yyextra->token = CommentToken(yytext); |
262 |
|
|
yylineno += countNewLineChars(yytext); |
263 |
|
|
return yyextra->token.baseType; |
264 |
|
|
} |
265 |
|
|
|
266 |
|
|
<*>\t { |
267 |
|
|
yyextra->token = OtherToken(" "); |
268 |
|
|
return yyextra->token.baseType; |
269 |
|
|
} |
270 |
|
|
|
271 |
|
|
\r+ /* eat up \r */ |
272 |
|
|
|
273 |
|
|
<<EOF>> { |
274 |
|
|
yyextra->token = EofToken(); |
275 |
|
|
yyterminate(); |
276 |
|
|
} |
277 |
|
|
|
278 |
|
|
<*>. { |
279 |
|
|
yyextra->token = OtherToken(yytext); |
280 |
|
|
return yyextra->token.baseType; |
281 |
|
|
} |
282 |
|
|
|
283 |
|
|
|
284 |
|
|
%% |
285 |
|
|
|
286 |
|
|
namespace LinuxSampler { |
287 |
|
|
|
288 |
|
|
int NkspScanner::processScanner() { |
289 |
|
|
return Nksp_lex(scanner); |
290 |
|
|
} |
291 |
|
|
|
292 |
|
|
void NkspScanner::createScanner(std::istream* is) { |
293 |
|
|
if (scanner) destroyScanner(); |
294 |
|
|
this->is = is; |
295 |
|
|
Nksp_lex_init(&scanner); |
296 |
|
|
Nksp_set_extra(this, scanner); |
297 |
|
|
} |
298 |
|
|
|
299 |
|
|
void NkspScanner::destroyScanner() { |
300 |
|
|
if (!scanner) return; |
301 |
|
|
Nksp_lex_destroy(scanner); |
302 |
|
|
scanner = NULL; |
303 |
|
|
} |
304 |
|
|
|
305 |
|
|
} // namespace LinuxSampler |