/* 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 "" { YYCTYPE yych; if((YYLIMIT - YYCURSOR) < 3) YYFILL(3); yych = *YYCURSOR; if(yych <= ' ') { if(yych <= 0x09) { if(yych <= 0x08) goto yy9; goto yy6; } else { if(yych <= 0x0A) goto yy8; if(yych <= 0x1F) goto yy9; goto yy6; } } else { if(yych <= '9') { if(yych <= '/') goto yy9; goto yy4; } else { if(yych <= '`') goto yy9; if(yych >= 'c') goto yy9; } } YYCTXMARKER = YYCURSOR + 1; ++YYCURSOR; if((yych = *YYCURSOR) <= '/') goto yy3; if(yych == '1') goto yy15; if(yych <= '9') goto yy12; yy3: #line 60 "ctx.s.re" { return UNEXPECTED; } #line 84 "" yy4: ++YYCURSOR; yych = *YYCURSOR; goto yy11; yy5: #line 50 "ctx.s.re" { return NUMBER; } #line 92 "" yy6: ++YYCURSOR; yy7: #line 53 "ctx.s.re" { if(s.cur == s.lim) return EOI; cursor = s.cur; goto std; } #line 103 "" yy8: yych = *++YYCURSOR; goto yy7; yy9: yych = *++YYCURSOR; goto yy3; yy10: ++YYCURSOR; if(YYLIMIT == YYCURSOR) YYFILL(1); yych = *YYCURSOR; yy11: if(yych <= '/') goto yy5; if(yych <= '9') goto yy10; goto yy5; yy12: ++YYCURSOR; if(YYLIMIT == YYCURSOR) YYFILL(1); yych = *YYCURSOR; if(yych <= '/') goto yy14; if(yych <= '9') goto yy12; yy14: YYCURSOR = YYCTXMARKER; #line 49 "ctx.s.re" { return KEYWORD; } #line 128 "" yy15: ++YYCURSOR; if((yych = *YYCURSOR) <= '/') goto yy16; if(yych <= '9') goto yy12; yy16: YYCURSOR = YYCTXMARKER; #line 48 "ctx.s.re" { return KEYWORD; } #line 137 "" } #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; } }