mirror of
https://github.com/ZDoom/Raze.git
synced 2024-11-16 01:11:44 +00:00
389 lines
8.9 KiB
C++
389 lines
8.9 KiB
C++
#define YYCTYPE unsigned char
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#define YYCURSOR cursor
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#define YYLIMIT limit
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#define YYMARKER marker
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#define YYFILL(n) {}
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#if 0 // As long as the buffer ends with '\n', we need do nothing special for YYFILL.
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// This buffer must be as large as the largest YYFILL call
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YYCTYPE eofbuf[9];
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#define YYFILL(n) \
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{ if(!sc_End) { \
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if(n == 2) { eofbuf[0] = *cursor; } \
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else if(n >= 3 && n <= 9) { memcpy(eofbuf, cursor, n-1); } \
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eofbuf[n-1] = '\n'; \
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cursor = eofbuf; \
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limit = eofbuf + n - 1; \
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sc_End = true; } \
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} \
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assert(n <= sizeof eofbuf) // Semicolon intentionally omitted
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#endif
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//#define YYDEBUG(s,c) { Printf ("%d: %02x\n", s, c); }
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#define YYDEBUG(s,c)
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const char *cursor = ScriptPtr;
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const char *limit = ScriptEndPtr;
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std1:
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tok = YYCURSOR;
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std2:
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/*!re2c
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any = [\000-\377];
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WSP = ([\000- ]\[\n]);
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NWS = (any\[\000- ]);
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O = [0-7];
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D = [0-9];
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L = [a-zA-Z_];
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H = [a-fA-F0-9];
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E = [Ee] [+-]? D+;
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FS = [fF];
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IS = [uUlL];
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ESC = [\\] ([abcfnrtv?'"\\] | "x" H+ | O+);
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TOK1 = [{}|=];
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TOKC = [{}|=/`~!@#$%^&*()\[\]\\?\-=+;:<>,.];
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STOP1 = (TOK1|["/;]);
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STOPC = (TOKC|["]);
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TOK2 = (NWS\STOP1);
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TOKC2 = (NWS\STOPC);
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*/
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#define RET(x) TokenType = (x); goto normal_token;
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if (tokens && StateMode != 0)
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{
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/*!re2c
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"/*" { goto comment; } /* C comment */
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"//" (any\"\n")* "\n" { goto newline; } /* C++ comment */
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("#region"|"#endregion") (any\"\n")* "\n"
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{ goto newline; } /* Region blocks [mxd] */
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(["](([\\]["])|[^"])*["]) { RET(TK_StringConst); }
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'stop' { RET(TK_Stop); }
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'wait' { RET(TK_Wait); }
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'fail' { RET(TK_Fail); }
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'loop' { RET(TK_Loop); }
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'goto' { StateMode = 0; StateOptions = false; RET(TK_Goto); }
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":" { RET(':'); }
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";" { RET(';'); }
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"}" { StateMode = 0; StateOptions = false; RET('}'); }
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WSP+ { goto std1; }
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"\n" { goto newline; }
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TOKS = (NWS\[/":;}]);
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TOKS* ([/] (TOKS\[*]) TOKS*)*
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{ RET(TK_NonWhitespace); }
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*/
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}
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else if (tokens) // A well-defined scanner, based on the c.re example.
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{
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/*!re2c
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"/*" { goto comment; } /* C comment */
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"//" (any\"\n")* "\n" { goto newline; } /* C++ comment */
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("#region"|"#endregion") (any\"\n")* "\n"
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{ goto newline; } /* Region blocks [mxd] */
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/* other DECORATE top level keywords */
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'#include' { RET(TK_Include); }
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L (L|D)* { RET(TK_Identifier); }
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("0" [xX] H+ IS?IS?) | ("0" D+ IS?IS?) | (D+ IS?IS?)
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{ RET(TK_IntConst); }
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(D+ E FS?) | (D* "." D+ E? FS?) | (D+ "." D* E? FS?)
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{ RET(TK_FloatConst); }
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(["](([\\]["])|[^"])*["])
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{ RET(TK_StringConst); }
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(['] (any\[\n'])* ['])
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{ RET(TK_NameConst); }
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".." { RET(TK_DotDot); }
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"..." { RET(TK_Ellipsis); }
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">>>=" { RET(TK_URShiftEq); }
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">>=" { RET(TK_RShiftEq); }
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"<<=" { RET(TK_LShiftEq); }
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"+=" { RET(TK_AddEq); }
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"-=" { RET(TK_SubEq); }
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"*=" { RET(TK_MulEq); }
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"/=" { RET(TK_DivEq); }
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"%=" { RET(TK_ModEq); }
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"&=" { RET(TK_AndEq); }
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"^=" { RET(TK_XorEq); }
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"|=" { RET(TK_OrEq); }
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">>>" { RET(TK_URShift); }
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">>" { RET(TK_RShift); }
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"<<" { RET(TK_LShift); }
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"++" { RET(TK_Incr); }
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"--" { RET(TK_Decr); }
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"&&" { RET(TK_AndAnd); }
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"||" { RET(TK_OrOr); }
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"<=" { RET(TK_Leq); }
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">=" { RET(TK_Geq); }
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"==" { RET(TK_Eq); }
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"!=" { RET(TK_Neq); }
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"~==" { RET(TK_ApproxEq); }
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"<>=" { RET(TK_LtGtEq); }
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"**" { RET(TK_MulMul); }
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"::" { RET(TK_ColonColon); }
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"->" { RET(TK_Arrow); }
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";" { RET(';'); }
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"{" { RET('{'); }
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"}" { RET('}'); }
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"," { RET(','); }
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":" { RET(':'); }
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"=" { RET('='); }
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"(" { RET('('); }
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")" { RET(')'); }
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"[" { RET('['); }
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"]" { RET(']'); }
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"." { RET('.'); }
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"&" { RET('&'); }
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"!" { RET('!'); }
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"~" { RET('~'); }
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"-" { RET('-'); }
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"+" { RET('+'); }
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"*" { RET('*'); }
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"/" { RET('/'); }
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"%" { RET('%'); }
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"<" { RET('<'); }
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">" { RET('>'); }
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"^" { RET('^'); }
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"|" { RET('|'); }
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"?" { RET('?'); }
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[ \t\v\f\r]+ { goto std1; }
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"\n" { goto newline; }
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any
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{
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ScriptError ("Unexpected character: %c (ASCII %d)\n", *tok, *tok);
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goto std1;
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}
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*/
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}
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if (!CMode) // The classic Hexen scanner.
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{
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/*!re2c
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"/*" { goto comment; } /* C comment */
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("//"|";") (any\"\n")* "\n" { goto newline; } /* C++/Hexen comment */
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("#region"|"#endregion") (any\"\n")* "\n"
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{ goto newline; } /* Region blocks [mxd] */
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WSP+ { goto std1; } /* whitespace */
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"\n" { goto newline; }
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"\"" { goto string; }
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TOK1 { goto normal_token; }
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/* Regular tokens may contain /, but they must not contain comment starts */
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TOK2* ([/] (TOK2\[*]) TOK2*)* { goto normal_token; }
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any { goto normal_token; } /* unknown character */
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*/
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}
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else // A modified Hexen scanner for DECORATE.
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{
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/*!re2c
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"/*" { goto comment; } /* C comment */
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"//" (any\"\n")* "\n" { goto newline; } /* C++ comment */
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("#region"|"#endregion") (any\"\n")* "\n"
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{ goto newline; } /* Region blocks [mxd] */
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WSP+ { goto std1; } /* whitespace */
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"\n" { goto newline; }
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"\"" { goto string; }
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[-] { goto negative_check; }
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((D* [.] D+) | (D+ [.] D*)) { goto normal_token; } /* decimal number */
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(D+ E FS?) | (D* "." D+ E? FS?) | (D+ "." D* E? FS?) { goto normal_token; } /* float with exponent */
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"::" { goto normal_token; }
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"&&" { goto normal_token; }
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"==" { goto normal_token; }
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"||" { goto normal_token; }
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"<<" { goto normal_token; }
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">>" { goto normal_token; }
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TOKC { goto normal_token; }
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TOKC2+ { goto normal_token; }
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any { goto normal_token; } /* unknown character */
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*/
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}
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negative_check:
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// re2c doesn't have enough state to handle '-' as the start of a negative number
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// and as its own token, so help it out a little.
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TokenType = '-';
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if (YYCURSOR >= YYLIMIT)
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{
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goto normal_token;
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}
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if (*YYCURSOR >= '0' && *YYCURSOR <= '9')
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{
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goto std2;
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}
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if (*YYCURSOR != '.' || YYCURSOR+1 >= YYLIMIT)
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{
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goto normal_token;
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}
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if (*(YYCURSOR+1) >= '0' && *YYCURSOR <= '9')
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{
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goto std2;
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}
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goto normal_token;
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comment:
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/*!re2c
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"*/"
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{
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if (YYCURSOR >= YYLIMIT)
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{
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ScriptPtr = ScriptEndPtr;
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return_val = false;
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goto end;
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}
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goto std1;
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}
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"\n"
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{
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if (YYCURSOR >= YYLIMIT)
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{
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ScriptPtr = ScriptEndPtr;
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return_val = false;
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goto end;
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}
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Line++;
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Crossed = true;
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goto comment;
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}
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any { goto comment; }
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*/
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newline:
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if (YYCURSOR >= YYLIMIT)
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{
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ScriptPtr = ScriptEndPtr;
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return_val = false;
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goto end;
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}
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Line++;
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Crossed = true;
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goto std1;
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normal_token:
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ScriptPtr = (YYCURSOR >= YYLIMIT) ? ScriptEndPtr : cursor;
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StringLen = int(ScriptPtr - tok);
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if (tokens && (TokenType == TK_StringConst || TokenType == TK_NameConst))
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{
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StringLen -= 2;
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if (StringLen >= MAX_STRING_SIZE)
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{
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BigStringBuffer = FString(tok+1, StringLen);
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}
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else
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{
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memcpy (StringBuffer, tok+1, StringLen);
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}
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if (StateMode && TokenType == TK_StringConst)
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{
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TokenType = TK_NonWhitespace;
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}
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}
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else
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{
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if (StringLen >= MAX_STRING_SIZE)
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{
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BigStringBuffer = FString(tok, StringLen);
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}
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else
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{
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memcpy (StringBuffer, tok, StringLen);
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}
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}
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if (tokens && StateMode)
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{ // State mode is exited after two consecutive TK_NonWhitespace tokens
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if (TokenType == TK_NonWhitespace)
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{
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StateMode--;
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}
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else
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{
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StateMode = 2;
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}
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}
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if (StringLen < MAX_STRING_SIZE)
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{
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String = StringBuffer;
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StringBuffer[StringLen] = '\0';
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}
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else
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{
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String = BigStringBuffer.LockBuffer();
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}
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return_val = true;
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goto end;
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string:
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if (YYLIMIT != ScriptEndPtr)
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{
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ScriptPtr = ScriptEndPtr;
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return_val = false;
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goto end;
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}
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ScriptPtr = cursor;
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BigStringBuffer = "";
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for (StringLen = 0; cursor < YYLIMIT; ++cursor)
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{
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if (Escape && *cursor == '\\' && *(cursor + 1) == '"')
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{
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cursor++;
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}
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else if (*cursor == '\r' && *(cursor + 1) == '\n')
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{
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cursor++; // convert CR-LF to simply LF
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}
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else if (*cursor == '"')
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{
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break;
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}
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if (*cursor == '\n')
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{
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if (CMode)
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{
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if (!Escape || StringLen == 0 || String[StringLen - 1] != '\\')
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{
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ScriptError ("Unterminated string constant");
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}
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else
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{
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StringLen--; // overwrite the \ character with \n
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}
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}
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Line++;
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Crossed = true;
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}
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if (StringLen == MAX_STRING_SIZE)
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{
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BigStringBuffer.AppendCStrPart(StringBuffer, StringLen);
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StringLen = 0;
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}
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StringBuffer[StringLen++] = *cursor;
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}
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if (BigStringBuffer.IsNotEmpty() || StringLen == MAX_STRING_SIZE)
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{
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BigStringBuffer.AppendCStrPart(StringBuffer, StringLen);
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String = BigStringBuffer.LockBuffer();
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StringLen = int(BigStringBuffer.Len());
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}
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else
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{
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String = StringBuffer;
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StringBuffer[StringLen] = '\0';
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}
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ScriptPtr = cursor + 1;
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return_val = true;
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end:
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