projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 7872c694 BJ |
1 | /* Copyright (c) 1979 Regents of the University of California */ |
| 2 | # | |
| 3 | /* | |
| 4 | * pi - Pascal interpreter code translator | |
| 5 | * | |
| 6 | * Charles Haley, Bill Joy UCB | |
| 7 | * Version 1.1 February 1978 | |
| 8 | * | |
| 9 | * | |
| 10 | * pxp - Pascal execution profiler | |
| 11 | * | |
| 12 | * Bill Joy UCB | |
| 13 | * Version 1.1 February 1978 | |
| 14 | */ | |
| 15 | ||
| 16 | #include "0.h" | |
| 17 | #include "yy.h" | |
| 18 | ||
| 19 | char *tokname(); | |
| 20 | ||
| 21 | int bounce; | |
| 22 | ||
| 23 | /* | |
| 24 | * Printing representation of a | |
| 25 | * "character" - a lexical token | |
| 26 | * not in a yytok structure. | |
| 27 | * 'which' indicates which char * you want | |
| 28 | * should always be called as "charname(...,0),charname(...,1)" | |
| 29 | */ | |
| 30 | char * | |
| 31 | charname(ch , which ) | |
| 32 | int ch; | |
| 33 | int which; | |
| 34 | { | |
| 35 | struct yytok Ych; | |
| 36 | ||
| 37 | Ych.Yychar = ch; | |
| 38 | Ych.Yylval = nullsem(ch); | |
| 39 | return (tokname(&Ych , which )); | |
| 40 | } | |
| 41 | ||
| 42 | /* | |
| 43 | * Printing representation of a token | |
| 44 | * 'which' as above. | |
| 45 | */ | |
| 46 | char * | |
| 47 | tokname(tp , which ) | |
| 48 | register struct yytok *tp; | |
| 49 | int which; | |
| 50 | { | |
| 51 | register char *cp; | |
| 52 | register struct kwtab *kp; | |
| 53 | char *cp2; | |
| 54 | ||
| 55 | cp2 = ""; | |
| 56 | switch (tp->Yychar) { | |
| 57 | case YCASELAB: | |
| 58 | cp = "case-label"; | |
| 59 | break; | |
| 60 | case YEOF: | |
| 61 | cp = "end-of-file"; | |
| 62 | break; | |
| 63 | case YILLCH: | |
| 64 | cp = "illegal character"; | |
| 65 | break; | |
| 66 | case 256: | |
| 67 | /* error token */ | |
| 68 | cp = "error"; | |
| 69 | break; | |
| 70 | case YID: | |
| 71 | cp = "identifier"; | |
| 72 | break; | |
| 73 | case YNUMB: | |
| 74 | cp = "real number"; | |
| 75 | break; | |
| 76 | case YINT: | |
| 77 | case YBINT: | |
| 78 | cp = "number"; | |
| 79 | break; | |
| 80 | case YSTRING: | |
| 81 | cp = tp->Yylval; | |
| 82 | cp = cp == NIL || cp[1] == 0 ? "character" : "string"; | |
| 83 | break; | |
| 84 | case YDOTDOT: | |
| 85 | cp = "'..'"; | |
| 86 | break; | |
| 87 | default: | |
| 88 | if (tp->Yychar < 256) { | |
| 89 | cp = "'x'\0'x'"; | |
| 90 | /* | |
| 91 | * for twice reentrant code! | |
| 92 | * used to be: | |
| 93 | * if (bounce = ((bounce + 1) & 1)) | |
| 94 | * cp += 4; | |
| 95 | * now: don't bounce unless 0th call | |
| 96 | */ | |
| 97 | if ( which == 0 ) | |
| 98 | bounce = ((bounce + 1) & 1); | |
| 99 | if (bounce) | |
| 100 | cp =+ 4; | |
| 101 | cp[1] = tp->Yychar; | |
| 102 | break; | |
| 103 | } | |
| 104 | for (kp = yykey; kp->kw_str != NIL && kp->kw_val != tp->Yychar; kp++) | |
| 105 | continue; | |
| 106 | cp = "keyword "; | |
| 107 | cp2 = kp->kw_str; | |
| 108 | } | |
| 109 | return ( which ? cp2 : cp ); | |
| 110 | } |