comparison: parser.cxx
parser.cxx
- changeset 26
- 54eaea6dc27c
- parent 25
- 2a600af97c6b
- child 28
- fb46d3d40064
equal
deleted
inserted
replaced
| 25:2a600af97c6b | 26:54eaea6dc27c |
|---|---|
| 57 int g_NumStates = 0; | 57 int g_NumStates = 0; |
| 58 int g_NumEvents = 0; | 58 int g_NumEvents = 0; |
| 59 int g_CurMode = MODE_TOPLEVEL; | 59 int g_CurMode = MODE_TOPLEVEL; |
| 60 str g_CurState = ""; | 60 str g_CurState = ""; |
| 61 bool g_stateSpawnDefined = false; | 61 bool g_stateSpawnDefined = false; |
| 62 bool g_GotMainLoop = false; | |
| 62 | 63 |
| 63 void ScriptReader::BeginParse (ObjWriter* w) { | 64 void ScriptReader::BeginParse (ObjWriter* w) { |
| 64 bool gotMainLoop = false; | |
| 65 while (Next()) { | 65 while (Next()) { |
| 66 // printf ("got token %s\n", token.chars()); | 66 // printf ("got token %s\n", token.chars()); |
| 67 if (!token.icompare ("#include")) { | 67 if (!token.icompare ("#include")) { |
| 68 MustString (); | 68 MustString (); |
| 69 | 69 |
| 93 g_stateSpawnDefined = true; | 93 g_stateSpawnDefined = true; |
| 94 | 94 |
| 95 // Must end in a colon | 95 // Must end in a colon |
| 96 MustNext (":"); | 96 MustNext (":"); |
| 97 | 97 |
| 98 // If the previous state did not define a mainloop, | 98 // Write the previous state's onenter and |
| 99 // define a dummy one now, since one has to be present. | 99 // mainloop buffers to file now |
| 100 if (g_CurState.len() && !gotMainLoop) { | 100 if (g_CurState.len()) |
| 101 w->Write (DH_MAINLOOP); | 101 w->WriteBuffers(); |
| 102 w->Write (DH_ENDMAINLOOP); | |
| 103 } | |
| 104 | 102 |
| 105 w->Write (DH_STATENAME); | 103 w->Write (DH_STATENAME); |
| 106 w->WriteString (statename); | 104 w->WriteString (statename); |
| 107 w->Write (DH_STATEIDX); | 105 w->Write (DH_STATEIDX); |
| 108 w->Write (g_NumStates); | 106 w->Write (g_NumStates); |
| 109 | 107 |
| 110 g_NumStates++; | 108 g_NumStates++; |
| 111 g_CurState = token; | 109 g_CurState = token; |
| 112 gotMainLoop = false; | 110 g_GotMainLoop = false; |
| 113 continue; | 111 continue; |
| 114 } | 112 } |
| 115 | 113 |
| 116 if (!token.icompare ("event")) { | 114 if (!token.icompare ("event")) { |
| 117 MUST_TOPLEVEL | 115 MUST_TOPLEVEL |
| 134 } | 132 } |
| 135 | 133 |
| 136 if (!token.icompare ("mainloop")) { | 134 if (!token.icompare ("mainloop")) { |
| 137 MUST_TOPLEVEL | 135 MUST_TOPLEVEL |
| 138 MustNext ("{"); | 136 MustNext ("{"); |
| 137 | |
| 138 // Mode must be set before dataheader is written here! | |
| 139 g_CurMode = MODE_MAINLOOP; | 139 g_CurMode = MODE_MAINLOOP; |
| 140 w->Write (DH_MAINLOOP); | 140 w->Write (DH_MAINLOOP); |
| 141 gotMainLoop = true; | |
| 142 continue; | 141 continue; |
| 143 } | 142 } |
| 144 | 143 |
| 145 if (!token.icompare ("onenter") || !token.icompare ("onexit")) { | 144 if (!token.icompare ("onenter") || !token.icompare ("onexit")) { |
| 146 MUST_TOPLEVEL | 145 MUST_TOPLEVEL |
| 147 bool onenter = !token.compare ("onenter"); | 146 bool onenter = !token.compare ("onenter"); |
| 148 | |
| 149 MustNext ("{"); | 147 MustNext ("{"); |
| 148 | |
| 149 // Mode must be set before dataheader is written here, | |
| 150 // because onenter goes to a separate buffer. | |
| 150 g_CurMode = onenter ? MODE_ONENTER : MODE_ONEXIT; | 151 g_CurMode = onenter ? MODE_ONENTER : MODE_ONEXIT; |
| 151 w->Write (onenter ? DH_ONENTER : DH_ONEXIT); | 152 w->Write (onenter ? DH_ONENTER : DH_ONEXIT); |
| 152 continue; | 153 continue; |
| 153 } | 154 } |
| 154 | 155 |
| 182 (g_CurMode == MODE_ONEXIT) ? DH_ENDONEXIT : -1; | 183 (g_CurMode == MODE_ONEXIT) ? DH_ENDONEXIT : -1; |
| 183 | 184 |
| 184 if (dataheader == -1) | 185 if (dataheader == -1) |
| 185 ParserError ("unexpected `}`"); | 186 ParserError ("unexpected `}`"); |
| 186 | 187 |
| 187 // Closing brace.. | 188 // Data header must be written before mode is changed because |
| 189 // onenter and mainloop go into buffers, and we want the closing | |
| 190 // data headers into said buffers too. | |
| 188 w->Write (dataheader); | 191 w->Write (dataheader); |
| 189 g_CurMode = MODE_TOPLEVEL; | 192 g_CurMode = MODE_TOPLEVEL; |
| 190 | 193 |
| 191 MustNext (";"); | 194 MustNext (";"); |
| 192 continue; | 195 continue; |
| 196 if (g) { | 199 if (g) { |
| 197 // Not in top level, unfortunately.. | 200 // Not in top level, unfortunately.. |
| 198 if (g_CurMode == MODE_TOPLEVEL) | 201 if (g_CurMode == MODE_TOPLEVEL) |
| 199 ParserError ("can't alter variables at top level"); | 202 ParserError ("can't alter variables at top level"); |
| 200 | 203 |
| 201 // Only addition for now.. | |
| 202 MustNext (); | |
| 203 | |
| 204 // Build operator string. Only '=' is one | 204 // Build operator string. Only '=' is one |
| 205 // character, others are two. | 205 // character, others are two. |
| 206 MustNext (); | |
| 206 str oper = token; | 207 str oper = token; |
| 207 if (token.compare ("=") != 0) { | 208 if (token.compare ("=") != 0) { |
| 208 MustNext (); | 209 MustNext (); |
| 209 oper += token; | 210 oper += token; |
| 210 } | 211 } |
| 259 | 260 |
| 260 // stateSpawn must be defined! | 261 // stateSpawn must be defined! |
| 261 if (!g_stateSpawnDefined) | 262 if (!g_stateSpawnDefined) |
| 262 ParserError ("script must have a state named `stateSpawn`!"); | 263 ParserError ("script must have a state named `stateSpawn`!"); |
| 263 | 264 |
| 264 // If the last state did not have a main loop, define a dummy one now. | 265 |
| 265 if (!gotMainLoop) { | 266 |
| 266 w->Write (DH_MAINLOOP); | 267 // Dump the last state's onenter and mainloop |
| 267 w->Write (DH_ENDMAINLOOP); | 268 w->WriteBuffers(); |
| 268 } | |
| 269 | 269 |
| 270 // If we added strings here, we need to write a list of them. | 270 // If we added strings here, we need to write a list of them. |
| 271 unsigned int stringcount = CountStringTable (); | 271 unsigned int stringcount = CountStringTable (); |
| 272 if (stringcount) { | 272 if (stringcount) { |
| 273 w->Write<long> (DH_STRINGLIST); | 273 w->Write<long> (DH_STRINGLIST); |
