comparison: parser.cxx
parser.cxx
- changeset 1
- f0c61c204bc8
- parent 0
- 8dce9696d62d
- child 2
- bb2c45522eb6
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inserted
replaced
| 0:8dce9696d62d | 1:f0c61c204bc8 |
|---|---|
| 36 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | 36 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 37 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | 37 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 38 * POSSIBILITY OF SUCH DAMAGE. | 38 * POSSIBILITY OF SUCH DAMAGE. |
| 39 */ | 39 */ |
| 40 | 40 |
| 41 #define __PARSER_CXX__ | |
| 42 | |
| 41 #include <stdio.h> | 43 #include <stdio.h> |
| 42 #include <stdlib.h> | 44 #include <stdlib.h> |
| 43 #include "common.h" | 45 #include "common.h" |
| 44 #include "str.h" | 46 #include "str.h" |
| 45 #include "objwriter.h" | 47 #include "objwriter.h" |
| 46 #include "scriptreader.h" | 48 #include "scriptreader.h" |
| 47 | 49 |
| 48 #define TOKEN_CHARS token.chars() | 50 #define TOKEN_CHARS token.chars() |
| 49 #define TOKEN_IS(s) !token.compare (s) | 51 #define TOKEN_IS(s) !token.compare (s) |
| 50 #define MUST_TOPLEVEL if (curmode != MODE_TOPLEVEL) \ | 52 #define MUST_TOPLEVEL if (g_CurMode != MODE_TOPLEVEL) \ |
| 51 ParseError ("%ss may only be defined at top level!", token.chars()); | 53 ParseError ("%ss may only be defined at top level!", token.chars()); |
| 52 | 54 |
| 55 int g_NumStates = 0; | |
| 56 int g_NumEvents = 0; | |
| 57 int g_CurMode = MODE_TOPLEVEL; | |
| 58 str g_CurState = ""; | |
| 59 | |
| 53 void ScriptReader::BeginParse (ObjWriter* w) { | 60 void ScriptReader::BeginParse (ObjWriter* w) { |
| 54 // Script starts at top level | |
| 55 curmode = MODE_TOPLEVEL; | |
| 56 curstate = ""; | |
| 57 | |
| 58 while (Next()) { | 61 while (Next()) { |
| 59 printf ("got token %s\n", (char*)token); | 62 // printf ("got token %s\n", token.chars()); |
| 60 if (TOKEN_IS ("state")) { | 63 if (TOKEN_IS ("#include")) { |
| 64 MustNext (); | |
| 65 // First ensure that the file can be opened | |
| 66 FILE* newfile = fopen (token.chars(), "r"); | |
| 67 if (!newfile) | |
| 68 ParseError ("couldn't open included file `%s`!", token.chars()); | |
| 69 fclose (newfile); | |
| 70 ScriptReader* newreader = new ScriptReader (token.chars()); | |
| 71 newreader->BeginParse (w); | |
| 72 } else if (TOKEN_IS ("state")) { | |
| 61 MUST_TOPLEVEL | 73 MUST_TOPLEVEL |
| 62 | 74 |
| 63 MustNext (); | 75 MustNext (); |
| 64 | 76 |
| 65 str statename = token; | 77 str statename = token; |
| 66 | 78 |
| 67 // State name must be a word. | 79 // State name must be a word. |
| 68 if (statename.first (" ") != statename.len()) | 80 if (statename.first (" ") != statename.len()) |
| 69 ParseError ("state name must be a single word! got `%s`", (char*)statename); | 81 ParseError ("state name must be a single word! got `%s`", (char*)statename); |
| 70 | 82 |
| 71 | |
| 72 // Must end in a colon | 83 // Must end in a colon |
| 73 MustNext (":"); | 84 MustNext (":"); |
| 74 | 85 |
| 75 w->WriteState (statename); | 86 w->Write (DH_STATENAME); |
| 76 curstate = statename; | 87 w->Write (statename.len()); |
| 88 w->WriteString (statename); | |
| 89 w->Write (DH_STATEIDX); | |
| 90 w->Write (g_NumStates); | |
| 91 | |
| 92 g_NumStates++; | |
| 93 g_CurState = statename; | |
| 77 } else if (TOKEN_IS ("event")) { | 94 } else if (TOKEN_IS ("event")) { |
| 78 MUST_TOPLEVEL | 95 MUST_TOPLEVEL |
| 79 | 96 |
| 80 // Event definition | 97 // Event definition |
| 81 MustNext (); | 98 MustNext (); |
| 93 | 110 |
| 94 #endif | 111 #endif |
| 95 | 112 |
| 96 MustNext ("{"); | 113 MustNext ("{"); |
| 97 | 114 |
| 98 curmode = MODE_EVENT; | 115 g_CurMode = MODE_EVENT; |
| 99 | 116 |
| 100 w->Write (DH_EVENT); | 117 w->Write (DH_EVENT); |
| 101 // w->Write<long> (u); | 118 // w->Write<long> (u); |
| 102 numevents++; | 119 g_NumEvents++; |
| 103 } else if (TOKEN_IS ("}")) { | 120 } else if (TOKEN_IS ("}")) { |
| 104 // Closing brace.. | 121 // Closing brace.. |
| 105 switch (curmode) { | 122 switch (g_CurMode) { |
| 106 case MODE_EVENT: | 123 case MODE_EVENT: |
| 107 // Brace closes event. | 124 // Brace closes event. |
| 108 w->Write (DH_ENDEVENT); | 125 w->Write (DH_ENDEVENT); |
| 109 curmode = MODE_TOPLEVEL; | 126 g_CurMode = MODE_TOPLEVEL; |
| 110 break; | 127 break; |
| 111 default: | 128 default: |
| 112 ParseError ("unexpected `}`"); | 129 ParseError ("unexpected `}`"); |
| 113 } | 130 } |
| 114 } else { | 131 } else { |
| 115 ParseError ("unknown keyword `%s`!", TOKEN_CHARS); | 132 ParseError ("unknown keyword `%s`!", TOKEN_CHARS); |
| 116 } | 133 } |
| 117 } | 134 } |
| 118 | 135 |
| 119 if (curmode != MODE_TOPLEVEL) | 136 if (g_CurMode != MODE_TOPLEVEL) |
| 120 ParseError ("script did not end at top level! did you forget a `}`?\n"); | 137 ParseError ("script did not end at top level! did you forget a `}`?\n"); |
| 121 | 138 |
| 122 /* | 139 /* |
| 123 // State | 140 // State |
| 124 w->WriteState ("stateSpawn"); | 141 w->WriteState ("stateSpawn"); |
