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1.1 ! root 1: /* ! 2: * Copyright (c) 1980 Regents of the University of California. ! 3: * All rights reserved. ! 4: * ! 5: * Redistribution and use in source and binary forms are permitted ! 6: * provided that: (1) source distributions retain this entire copyright ! 7: * notice and comment, and (2) distributions including binaries display ! 8: * the following acknowledgement: ``This product includes software ! 9: * developed by the University of California, Berkeley and its contributors'' ! 10: * in the documentation or other materials provided with the distribution ! 11: * and in all advertising materials mentioning features or use of this ! 12: * software. Neither the name of the University nor the names of its ! 13: * contributors may be used to endorse or promote products derived ! 14: * from this software without specific prior written permission. ! 15: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR ! 16: * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED ! 17: * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. ! 18: */ ! 19: ! 20: #ifndef lint ! 21: static char sccsid[] = "@(#)errorpi.c 5.4 (Berkeley) 6/1/90"; ! 22: #endif /* not lint */ ! 23: ! 24: #include <stdio.h> ! 25: #include <ctype.h> ! 26: #include "error.h" ! 27: ! 28: extern char *currentfilename; ! 29: static char *c_linenumber; ! 30: static char *unk_hdr[] = {"In", "program", "???"}; ! 31: static char **c_header = &unk_hdr[0]; ! 32: ! 33: /* ! 34: * Attempt to handle error messages produced by pi (and by pc) ! 35: * ! 36: * problem #1: There is no file name available when a file does not ! 37: * use a #include; this will have to be given to error ! 38: * in the command line. ! 39: * problem #2: pi doesn't always tell you what line number ! 40: * a error refers to; for example during the tree ! 41: * walk phase of code generation and error detection, ! 42: * an error can refer to "variable foo in procedure bletch" ! 43: * without giving a line number ! 44: * problem #3: line numbers, when available, are attached to ! 45: * the source line, along with the source line itself ! 46: * These line numbers must be extracted, and ! 47: * the source line thrown away. ! 48: * problem #4: Some error messages produce more than one line number ! 49: * on the same message. ! 50: * There are only two (I think): ! 51: * %s undefined on line%s ! 52: * %s improperly used on line%s ! 53: * here, the %s makes line plural or singular. ! 54: * ! 55: * Here are the error strings used in pi version 1.2 that can refer ! 56: * to a file name or line number: ! 57: * ! 58: * Multiply defined label in case, lines %d and %d ! 59: * Goto %s from line %d is into a structured statement ! 60: * End matched %s on line %d ! 61: * Inserted keyword end matching %s on line %d ! 62: * ! 63: * Here are the general pi patterns recognized: ! 64: * define piptr == -.*^-.* ! 65: * define msg = .* ! 66: * define digit = [0-9] ! 67: * definename = .* ! 68: * define date_format letter*3 letter*3 (digit | (digit digit)) ! 69: * (digit | (digit digit)):digit*2 digit*4 ! 70: * ! 71: * {e,E} (piptr) (msg) Encounter an error during textual scan ! 72: * E {digit}* - (msg) Have an error message that refers to a new line ! 73: * E - msg Have an error message that refers to current ! 74: * function, program or procedure ! 75: * (date_format) (name): When switch compilation files ! 76: * ... (msg) When refer to the previous line ! 77: * 'In' ('procedure'|'function'|'program') (name): ! 78: * pi is now complaining about 2nd pass errors. ! 79: * ! 80: * Here is the output from a compilation ! 81: * ! 82: * ! 83: * 2 var i:integer; ! 84: * e --------------^--- Inserted ';' ! 85: * E 2 - All variables must be declared in one var part ! 86: * E 5 - Include filename must end in .i ! 87: * Mon Apr 21 15:56 1980 test.h: ! 88: * 2 begin ! 89: * e ------^--- Inserted ';' ! 90: * Mon Apr 21 16:06 1980 test.p: ! 91: * E 2 - Function type must be specified ! 92: * 6 procedure foo(var x:real); ! 93: * e ------^--- Inserted ';' ! 94: * In function bletch: ! 95: * E - No assignment to the function variable ! 96: * w - variable x is never used ! 97: * E 6 - foo is already defined in this block ! 98: * In procedure foo: ! 99: * w - variable x is neither used nor set ! 100: * 9 z : = 23; ! 101: * E --------------^--- Undefined variable ! 102: * 10 y = [1]; ! 103: * e ----------------^--- Inserted ':' ! 104: * 13 z := 345.; ! 105: * e -----------------------^--- Digits required after decimal point ! 106: * E 10 - Constant set involved in non set context ! 107: * E 11 - Type clash: real is incompatible with integer ! 108: * ... Type of expression clashed with type of variable in assignment ! 109: * E 12 - Parameter type not identical to type of var parameter x of foo ! 110: * In program mung: ! 111: * w - variable y is never used ! 112: * w - type foo is never used ! 113: * w - function bletch is never used ! 114: * E - z undefined on lines 9 13 ! 115: */ ! 116: char *Months[] = { ! 117: "Jan", "Feb", "Mar", "Apr", "May", "Jun", ! 118: "Jul", "Aug", "Sep", "Oct","Nov", "Dec", ! 119: 0 ! 120: }; ! 121: char *Days[] = { ! 122: "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", 0 ! 123: }; ! 124: char *Piroutines[] = { ! 125: "program", "function", "procedure", 0 ! 126: }; ! 127: ! 128: ! 129: static boolean structured, multiple; ! 130: ! 131: char *pi_Endmatched[] = {"End", "matched"}; ! 132: char *pi_Inserted[] = {"Inserted", "keyword", "end", "matching"}; ! 133: ! 134: char *pi_multiple[] = {"Mutiply", "defined", "label", "in", "case,", "line"}; ! 135: char *pi_structured[] = {"is", "into", "a", "structured", "statement"}; ! 136: ! 137: char *pi_und1[] = {"undefined", "on", "line"}; ! 138: char *pi_und2[] = {"undefined", "on", "lines"}; ! 139: char *pi_imp1[] = {"improperly", "used", "on", "line"}; ! 140: char *pi_imp2[] = {"improperly", "used", "on", "lines"}; ! 141: ! 142: boolean alldigits(string) ! 143: reg char *string; ! 144: { ! 145: for (; *string && isdigit(*string); string++) ! 146: continue; ! 147: return(*string == '\0'); ! 148: } ! 149: boolean instringset(member, set) ! 150: char *member; ! 151: reg char **set; ! 152: { ! 153: for(; *set; set++){ ! 154: if (strcmp(*set, member) == 0) ! 155: return(TRUE); ! 156: } ! 157: return(FALSE); ! 158: } ! 159: ! 160: boolean isdateformat(wordc, wordv) ! 161: int wordc; ! 162: char **wordv; ! 163: { ! 164: return( ! 165: (wordc == 5) ! 166: && (instringset(wordv[0], Days)) ! 167: && (instringset(wordv[1], Months)) ! 168: && (alldigits(wordv[2])) ! 169: && (alldigits(wordv[4])) ); ! 170: } ! 171: ! 172: boolean piptr(string) ! 173: reg char *string; ! 174: { ! 175: if (*string != '-') ! 176: return(FALSE); ! 177: while (*string && *string == '-') ! 178: string++; ! 179: if (*string != '^') ! 180: return(FALSE); ! 181: string++; ! 182: while (*string && *string == '-') ! 183: string++; ! 184: return(*string == '\0'); ! 185: } ! 186: ! 187: extern int wordc; ! 188: extern char **wordv; ! 189: ! 190: Errorclass pi() ! 191: { ! 192: char **nwordv; ! 193: ! 194: if (wordc < 2) ! 195: return (C_UNKNOWN); ! 196: if ( ( strlen(wordv[1]) == 1) ! 197: && ( (wordv[1][0] == 'e') || (wordv[1][0] == 'E') ) ! 198: && ( piptr(wordv[2]) ) ! 199: ) { ! 200: boolean longpiptr = 0; ! 201: /* ! 202: * We have recognized a first pass error of the form: ! 203: * letter ------^---- message ! 204: * ! 205: * turn into an error message of the form: ! 206: * ! 207: * file line 'pascal errortype' letter \n |---- message ! 208: * or of the form: ! 209: * file line letter |---- message ! 210: * when there are strlen("(*[pi]") or more ! 211: * preceding '-' on the error pointer. ! 212: * ! 213: * Where the | is intended to be a down arrow, so that ! 214: * the pi error messages can be inserted above the ! 215: * line in error, instead of below. (All of the other ! 216: * langauges put thier messages before the source line, ! 217: * instead of after it as does pi.) ! 218: * ! 219: * where the pointer to the error has been truncated ! 220: * by 6 characters to account for the fact that ! 221: * the pointer points into a tab preceded input line. ! 222: */ ! 223: language = INPI; ! 224: (void)substitute(wordv[2], '^', '|'); ! 225: longpiptr = position(wordv[2],'|') > (6+8); ! 226: nwordv = wordvsplice(longpiptr ? 2 : 4, wordc, wordv+1); ! 227: nwordv[0] = strsave(currentfilename); ! 228: nwordv[1] = strsave(c_linenumber); ! 229: if (!longpiptr){ ! 230: nwordv[2] = "pascal errortype"; ! 231: nwordv[3] = wordv[1]; ! 232: nwordv[4] = strsave("%%%\n"); ! 233: if (strlen(nwordv[5]) > (8-2)) /* this is the pointer */ ! 234: nwordv[5] += (8-2); /* bump over 6 characters */ ! 235: } ! 236: wordv = nwordv - 1; /* convert to 1 based */ ! 237: wordc += longpiptr ? 2 : 4; ! 238: return(C_TRUE); ! 239: } ! 240: if ( (wordc >= 4) ! 241: && (strlen(wordv[1]) == 1) ! 242: && ( (*wordv[1] == 'E') || (*wordv[1] == 'w') || (*wordv[1] == 'e') ) ! 243: && (alldigits(wordv[2])) ! 244: && (strlen(wordv[3]) == 1) ! 245: && (wordv[3][0] == '-') ! 246: ){ ! 247: /* ! 248: * Message of the form: letter linenumber - message ! 249: * Turn into form: filename linenumber letter - message ! 250: */ ! 251: language = INPI; ! 252: nwordv = wordvsplice(1, wordc, wordv + 1); ! 253: nwordv[0] = strsave(currentfilename); ! 254: nwordv[1] = wordv[2]; ! 255: nwordv[2] = wordv[1]; ! 256: c_linenumber = wordv[2]; ! 257: wordc += 1; ! 258: wordv = nwordv - 1; ! 259: return(C_TRUE); ! 260: } ! 261: if ( (wordc >= 3) ! 262: && (strlen(wordv[1]) == 1) ! 263: && ( (*(wordv[1]) == 'E') || (*(wordv[1]) == 'w') || (*(wordv[1]) == 'e') ) ! 264: && (strlen(wordv[2]) == 1) ! 265: && (wordv[2][0] == '-') ! 266: ) { ! 267: /* ! 268: * Message of the form: letter - message ! 269: * This happens only when we are traversing the tree ! 270: * during the second pass of pi, and discover semantic ! 271: * errors. ! 272: * ! 273: * We have already (presumably) saved the header message ! 274: * and can now construct a nulled error message for the ! 275: * current file. ! 276: * ! 277: * Turns into a message of the form: ! 278: * filename (header) letter - message ! 279: * ! 280: * First, see if it is a message referring to more than ! 281: * one line number. Only of the form: ! 282: * %s undefined on line%s ! 283: * %s improperly used on line%s ! 284: */ ! 285: boolean undefined = 0; ! 286: int wordindex; ! 287: ! 288: language = INPI; ! 289: if ( (undefined = (wordvcmp(wordv+2, 3, pi_und1) == 0) ) ! 290: || (undefined = (wordvcmp(wordv+2, 3, pi_und2) == 0) ) ! 291: || (wordvcmp(wordv+2, 4, pi_imp1) == 0) ! 292: || (wordvcmp(wordv+2, 4, pi_imp2) == 0) ! 293: ){ ! 294: for (wordindex = undefined ? 5 : 6; wordindex <= wordc; ! 295: wordindex++){ ! 296: nwordv = wordvsplice(2, undefined ? 2 : 3, wordv+1); ! 297: nwordv[0] = strsave(currentfilename); ! 298: nwordv[1] = wordv[wordindex]; ! 299: if (wordindex != wordc) ! 300: erroradd(undefined ? 4 : 5, nwordv, ! 301: C_TRUE, C_UNKNOWN); ! 302: } ! 303: wordc = undefined ? 4 : 5; ! 304: wordv = nwordv - 1; ! 305: return(C_TRUE); ! 306: } ! 307: ! 308: nwordv = wordvsplice(1+3, wordc, wordv+1); ! 309: nwordv[0] = strsave(currentfilename); ! 310: nwordv[1] = strsave(c_header[0]); ! 311: nwordv[2] = strsave(c_header[1]); ! 312: nwordv[3] = strsave(c_header[2]); ! 313: wordv = nwordv - 1; ! 314: wordc += 1 + 3; ! 315: return(C_THISFILE); ! 316: } ! 317: if (strcmp(wordv[1], "...") == 0){ ! 318: /* ! 319: * have a continuation error message ! 320: * of the form: ... message ! 321: * Turn into form : filename linenumber message ! 322: */ ! 323: language = INPI; ! 324: nwordv = wordvsplice(1, wordc, wordv+1); ! 325: nwordv[0] = strsave(currentfilename); ! 326: nwordv[1] = strsave(c_linenumber); ! 327: wordv = nwordv - 1; ! 328: wordc += 1; ! 329: return(C_TRUE); ! 330: } ! 331: if( (wordc == 6) ! 332: && (lastchar(wordv[6]) == ':') ! 333: && (isdateformat(5, wordv + 1)) ! 334: ){ ! 335: /* ! 336: * Have message that tells us we have changed files ! 337: */ ! 338: language = INPI; ! 339: currentfilename = strsave(wordv[6]); ! 340: clob_last(currentfilename, '\0'); ! 341: return(C_SYNC); ! 342: } ! 343: if( (wordc == 3) ! 344: && (strcmp(wordv[1], "In") == 0) ! 345: && (lastchar(wordv[3]) == ':') ! 346: && (instringset(wordv[2], Piroutines)) ! 347: ) { ! 348: language = INPI; ! 349: c_header = wordvsplice(0, wordc, wordv+1); ! 350: return(C_SYNC); ! 351: } ! 352: /* ! 353: * now, check for just the line number followed by the text ! 354: */ ! 355: if (alldigits(wordv[1])){ ! 356: language = INPI; ! 357: c_linenumber = wordv[1]; ! 358: return(C_IGNORE); ! 359: } ! 360: /* ! 361: * Attempt to match messages refering to a line number ! 362: * ! 363: * Multiply defined label in case, lines %d and %d ! 364: * Goto %s from line %d is into a structured statement ! 365: * End matched %s on line %d ! 366: * Inserted keyword end matching %s on line %d ! 367: */ ! 368: multiple = structured = 0; ! 369: if ( ! 370: ( (wordc == 6) && (wordvcmp(wordv+1, 2, pi_Endmatched) == 0)) ! 371: || ( (wordc == 8) && (wordvcmp(wordv+1, 4, pi_Inserted) == 0)) ! 372: || ( multiple = ((wordc == 9) && (wordvcmp(wordv+1,6, pi_multiple) == 0) ) ) ! 373: || ( structured = ((wordc == 10) && (wordvcmp(wordv+6,5, pi_structured) == 0 ) )) ! 374: ){ ! 375: language = INPI; ! 376: nwordv = wordvsplice(2, wordc, wordv+1); ! 377: nwordv[0] = strsave(currentfilename); ! 378: nwordv[1] = structured ? wordv [5] : wordv[wordc]; ! 379: wordc += 2; ! 380: wordv = nwordv - 1; ! 381: if (!multiple) ! 382: return(C_TRUE); ! 383: erroradd(wordc, nwordv, C_TRUE, C_UNKNOWN); ! 384: nwordv = wordvsplice(0, wordc, nwordv); ! 385: nwordv[1] = wordv[wordc - 2]; ! 386: return(C_TRUE); ! 387: } ! 388: return(C_UNKNOWN); ! 389: }
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