-rw-r--r-- | lib/sitecing_enflesher.ll | 76 |
1 files changed, 64 insertions, 12 deletions
diff --git a/lib/sitecing_enflesher.ll b/lib/sitecing_enflesher.ll index 5f631d7..46489c7 100644 --- a/lib/sitecing_enflesher.ll +++ b/lib/sitecing_enflesher.ll | |||
@@ -9,51 +9,41 @@ using namespace sitecing; | |||
9 | #define sitecing_enflesher_flexlexer_once | 9 | #define sitecing_enflesher_flexlexer_once |
10 | #include "sitecing/sitecing_enflesher.h" | 10 | #include "sitecing/sitecing_enflesher.h" |
11 | #include "sitecing/sitecing_parser.h" | 11 | #include "sitecing/sitecing_parser.h" |
12 | #undef yyFlexLexer | 12 | #undef yyFlexLexer |
13 | #define yyFlexLexer sitecing_enflesherFlexLexer | 13 | #define yyFlexLexer sitecing_enflesherFlexLexer |
14 | %} | 14 | %} |
15 | %option 8bit c++ verbose noyywrap yyclass="sitecing_enflesher" yylineno prefix="sitecing_enflesher" stack debug | 15 | %option 8bit c++ verbose noyywrap yyclass="sitecing_enflesher" yylineno prefix="sitecing_enflesher" stack debug |
16 | 16 | ||
17 | ID[A-Za-z_][A-Za-z0-9_]* | 17 | ID[A-Za-z_][A-Za-z0-9_]* |
18 | 18 | ||
19 | %% | 19 | %% |
20 | 20 | ||
21 | ^\%\%\#[^\n]+\n{ | 21 | ^\%\%\#[^\n]+\n{ |
22 | string line = yytext; | 22 | string line = yytext; |
23 | line.erase(0,3); | 23 | line.erase(0,3); |
24 | line.erase(line.length()-1); | 24 | line.erase(line.length()-1); |
25 | outs.flush(); | 25 | outs_open(parser.output_basename+line); |
26 | outs.close(); | ||
27 | outs.clear(); | ||
28 | outs.open((parser.output_basename+line).c_str(),ios::trunc); | ||
29 | if(!outs.good()) | ||
30 | throw preprocessor_error(CODEPOINT,"failed to write preprocessor output"); | ||
31 | anchor(); | 26 | anchor(); |
32 | anchoraged = true; | 27 | anchoraged = true; |
33 | } | 28 | } |
34 | ^\%\%[^\n]+\n{ | 29 | ^\%\%[^\n]+\n{ |
35 | string line = yytext; | 30 | string line = yytext; |
36 | line.erase(0,2); | 31 | line.erase(0,2); |
37 | line.erase(line.length()-1); | 32 | line.erase(line.length()-1); |
38 | outs.flush(); | 33 | outs_open(parser.output_basename+line); |
39 | outs.close(); | ||
40 | outs.clear(); | ||
41 | outs.open((parser.output_basename+line).c_str(),ios::trunc); | ||
42 | if(!outs.good()) | ||
43 | throw preprocessor_error(CODEPOINT,"failed to write preprocessor output"); | ||
44 | anchoraged = false; | 34 | anchoraged = false; |
45 | } | 35 | } |
46 | 36 | ||
47 | \<\%component_basename\%\>outs << parser.component_basename; anchor_time = true; | 37 | \<\%component_basename\%\>outs << parser.component_basename; anchor_time = true; |
48 | \<\%impl\%\> outs << parser.impl; anchor_time = true; | 38 | \<\%impl\%\> outs << parser.impl; anchor_time = true; |
49 | \<\%member_functions:impl\%\>{ | 39 | \<\%member_functions:impl\%\>{ |
50 | for(sitecing_parser::member_functions_t::const_iterator i=parser.member_functions.begin();i!=parser.member_functions.end();i++) { | 40 | for(sitecing_parser::member_functions_t::const_iterator i=parser.member_functions.begin();i!=parser.member_functions.end();i++) { |
51 | outs << i->type << " " << parser.class_name << "::"; | 41 | outs << i->type << " " << parser.class_name << "::"; |
52 | if(i->name.empty()) { | 42 | if(i->name.empty()) { |
53 | outs << parser.class_name << "()"; | 43 | outs << parser.class_name << "()"; |
54 | bool first = true; | 44 | bool first = true; |
55 | for(sitecing_parser::member_variables_t::iterator i=parser.member_variables.begin();i!=parser.member_variables.end();i++) { | 45 | for(sitecing_parser::member_variables_t::iterator i=parser.member_variables.begin();i!=parser.member_variables.end();i++) { |
56 | if(i->initializer.empty()) | 46 | if(i->initializer.empty()) |
57 | continue; | 47 | continue; |
58 | if(first) { | 48 | if(first) { |
59 | outs << ":"; | 49 | outs << ":"; |
@@ -184,19 +174,81 @@ void sitecing_enflesher::LexerOutput(const char *buf,int size) { | |||
184 | } | 174 | } |
185 | 175 | ||
186 | void sitecing_enflesher::enflesh() { | 176 | void sitecing_enflesher::enflesh() { |
187 | ifstream ifs(parser.skeleton.c_str()); | 177 | ifstream ifs(parser.skeleton.c_str()); |
188 | if(!ifs.good()) | 178 | if(!ifs.good()) |
189 | throw preprocessor_error(CODEPOINT,"failed to open skeleton file"); | 179 | throw preprocessor_error(CODEPOINT,"failed to open skeleton file"); |
190 | switch_streams(&ifs,NULL); | 180 | switch_streams(&ifs,NULL); |
191 | yylex(); | 181 | yylex(); |
192 | } | 182 | } |
193 | 183 | ||
194 | void sitecing_enflesher::anchor() { | 184 | void sitecing_enflesher::anchor() { |
195 | if(!anchoraged) | 185 | if(!anchoraged) |
196 | return; | 186 | return; |
197 | outs << "\n#line " << lineno() << " \"" << parser.skeleton << "\"\n"; | 187 | outs << "\n#line " << lineno() << " \"" << parser.skeleton << "\"\n"; |
198 | anchor_time = false; | 188 | anchor_time = false; |
199 | } | 189 | } |
190 | |||
191 | void sitecing_enflesher::outs_open(const string& nfile) { | ||
192 | if(!outs_filename.empty()) { | ||
193 | outs.flush(); | ||
194 | outs.close(); | ||
195 | outs.clear(); | ||
196 | /* | ||
197 | * compare source and destination files. | ||
198 | * | ||
199 | * one can also keep a hash for the old one and compute one for the | ||
200 | * output while writing, but I'm not sure if it's any better. Surely a | ||
201 | * bit less accurate, unless we're going to compare it in case of | ||
202 | * difference, anyway. | ||
203 | */ | ||
204 | bool overwrite = false; | ||
205 | struct stat st_s, st_d; | ||
206 | string fn_s = outs_filename+".new"; | ||
207 | string fn_d = outs_filename; | ||
208 | if(stat(fn_d.c_str(),&st_d)) { | ||
209 | overwrite = true; | ||
210 | }else{ | ||
211 | if(stat(fn_s.c_str(),&st_s)) | ||
212 | throw preprocessor_error(CODEPOINT,"failed to stat() supposedly created file"); | ||
213 | if(st_s.st_size!=st_d.st_size) { | ||
214 | overwrite = true; | ||
215 | }else{ | ||
216 | ifstream i_s(fn_s.c_str(),ios::in); | ||
217 | if(!i_s) | ||
218 | throw preprocessor_error(CODEPOINT,"failed to open supposedly created file"); | ||
219 | ifstream i_d(fn_d.c_str(),ios::in); | ||
220 | if(!i_d) | ||
221 | throw preprocessor_error(CODEPOINT,"failed to open the old preprocessed source"); | ||
222 | off_t remaining = st_s.st_size; | ||
223 | char t1[2048]; | ||
224 | char t2[sizeof(t1)]; | ||
225 | while(remaining) { | ||
226 | int rb = remaining; | ||
227 | if(rb>sizeof(t1)) | ||
228 | rb = sizeof(t1); | ||
229 | if(i_s.read(t1,rb).gcount()!=rb) | ||
230 | throw preprocessor_error(CODEPOINT,"error reading just created file"); | ||
231 | if(i_d.read(t2,rb).gcount()!=rb) | ||
232 | throw preprocessor_error(CODEPOINT,"error reading the old preprocessed source"); | ||
233 | if(memcmp(t1,t2,rb)) { | ||
234 | overwrite = true; | ||
235 | break; | ||
236 | } | ||
237 | remaining -= rb; | ||
238 | } | ||
239 | } | ||
240 | } | ||
241 | if(overwrite) { | ||
242 | cerr << "renaming '" << fn_s << "'" << endl; | ||
243 | if(rename(fn_s.c_str(),fn_d.c_str())) | ||
244 | throw preprocessor_error(CODEPOINT,"failed to rename() generated output"); | ||
245 | } | ||
246 | } | ||
247 | outs_filename = nfile; | ||
248 | outs.open((nfile+".new").c_str(),ios::trunc); | ||
249 | if(!outs.good()) | ||
250 | throw preprocessor_error(CODEPOINT,"failed to write preprocessor output"); | ||
251 | } | ||
200 | /* | 252 | /* |
201 | * vim:set ft=lex: | 253 | * vim:set ft=lex: |
202 | */ | 254 | */ |