/* Generated by re2c */ #line 1 "ctx.s.re" #include #include struct Scanner { Scanner(char *txt) : cur(txt), lim(txt + strlen(txt)) { } char *cur; char *lim; char *ptr; char *ctx; char *tok; }; #define YYCTYPE char #define YYCURSOR s.cur #define YYLIMIT s.lim #define YYMARKER s.ptr #define YYCTXMARKER s.ctx #define YYFILL(n) enum What { UNEXPECTED, KEYWORD, NUMBER, EOI }; char * tokens[] = { "UNEXPECTED", "KEYWORD", "NUMBER", "EOI" }; int scan(Scanner &s) { YYCTYPE *cursor = s.cur; if(cursor == s.lim) return EOI; std: s.tok = cursor; #line 50 "ctx.s.c" { YYCTYPE yych; if ((YYLIMIT - YYCURSOR) < 3) YYFILL(3); yych = *YYCURSOR; if (yych <= ' ') { if (yych <= 0x08) goto yy2; if (yych <= '\n') goto yy4; if (yych >= ' ') goto yy4; } else { if (yych <= '9') { if (yych >= '0') goto yy6; } else { if (yych <= '`') goto yy2; if (yych <= 'b') goto yy9; } } yy2: ++YYCURSOR; yy3: #line 60 "ctx.s.re" { return UNEXPECTED; } #line 74 "ctx.s.c" yy4: ++YYCURSOR; #line 53 "ctx.s.re" { if(s.cur == s.lim) return EOI; cursor = s.cur; goto std; } #line 84 "ctx.s.c" yy6: ++YYCURSOR; if (YYLIMIT <= YYCURSOR) YYFILL(1); yych = *YYCURSOR; if (yych <= '/') goto yy8; if (yych <= '9') goto yy6; yy8: #line 50 "ctx.s.re" { return NUMBER; } #line 94 "ctx.s.c" yy9: yych = *++YYCURSOR; if (yych <= '/') goto yy3; if (yych == '1') { YYCTXMARKER = YYCURSOR; goto yy13; } if (yych >= ':') goto yy3; YYCTXMARKER = YYCURSOR; yy10: ++YYCURSOR; if (YYLIMIT <= YYCURSOR) YYFILL(1); yych = *YYCURSOR; if (yych <= '/') goto yy12; if (yych <= '9') goto yy10; yy12: YYCURSOR = YYCTXMARKER; #line 49 "ctx.s.re" { return KEYWORD; } #line 114 "ctx.s.c" yy13: yych = *++YYCURSOR; if (yych <= '/') goto yy14; if (yych <= '9') goto yy10; yy14: YYCURSOR -= 1; #line 48 "ctx.s.re" { return KEYWORD; } #line 123 "ctx.s.c" } #line 63 "ctx.s.re" } #define YYMAXFILL 3 int main(int,char**) { Scanner s("a77 a1 b8 b1"); int t, n = 0; while ((t = scan(s)) != EOI) { std::cout << (++n) << ": " << tokens[t] << " = \""; std::cout.write(s.tok, s.cur-s.tok); std::cout << "\"" << std::endl; } }