diff options
Diffstat (limited to 'usr.bin/error/pi.c')
| -rw-r--r-- | usr.bin/error/pi.c | 404 |
1 files changed, 0 insertions, 404 deletions
diff --git a/usr.bin/error/pi.c b/usr.bin/error/pi.c deleted file mode 100644 index 67778a4..0000000 --- a/usr.bin/error/pi.c +++ /dev/null @@ -1,404 +0,0 @@ -/* - * Copyright (c) 1980, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#ifndef lint -static char sccsid[] = "@(#)pi.c 8.1 (Berkeley) 6/6/93"; -#endif /* not lint */ - -#include <stdio.h> -#include <ctype.h> -#include <string.h> -#include "error.h" - -extern char *currentfilename; -static char *c_linenumber; -static char *unk_hdr[] = {"In", "program", "???"}; -static char **c_header = &unk_hdr[0]; - -/* - * Attempt to handle error messages produced by pi (and by pc) - * - * problem #1: There is no file name available when a file does not - * use a #include; this will have to be given to error - * in the command line. - * problem #2: pi doesn't always tell you what line number - * a error refers to; for example during the tree - * walk phase of code generation and error detection, - * an error can refer to "variable foo in procedure bletch" - * without giving a line number - * problem #3: line numbers, when available, are attached to - * the source line, along with the source line itself - * These line numbers must be extracted, and - * the source line thrown away. - * problem #4: Some error messages produce more than one line number - * on the same message. - * There are only two (I think): - * %s undefined on line%s - * %s improperly used on line%s - * here, the %s makes line plural or singular. - * - * Here are the error strings used in pi version 1.2 that can refer - * to a file name or line number: - * - * Multiply defined label in case, lines %d and %d - * Goto %s from line %d is into a structured statement - * End matched %s on line %d - * Inserted keyword end matching %s on line %d - * - * Here are the general pi patterns recognized: - * define piptr == -.*^-.* - * define msg = .* - * define digit = [0-9] - * definename = .* - * define date_format letter*3 letter*3 (digit | (digit digit)) - * (digit | (digit digit)):digit*2 digit*4 - * - * {e,E} (piptr) (msg) Encounter an error during textual scan - * E {digit}* - (msg) Have an error message that refers to a new line - * E - msg Have an error message that refers to current - * function, program or procedure - * (date_format) (name): When switch compilation files - * ... (msg) When refer to the previous line - * 'In' ('procedure'|'function'|'program') (name): - * pi is now complaining about 2nd pass errors. - * - * Here is the output from a compilation - * - * - * 2 var i:integer; - * e --------------^--- Inserted ';' - * E 2 - All variables must be declared in one var part - * E 5 - Include filename must end in .i - * Mon Apr 21 15:56 1980 test.h: - * 2 begin - * e ------^--- Inserted ';' - * Mon Apr 21 16:06 1980 test.p: - * E 2 - Function type must be specified - * 6 procedure foo(var x:real); - * e ------^--- Inserted ';' - * In function bletch: - * E - No assignment to the function variable - * w - variable x is never used - * E 6 - foo is already defined in this block - * In procedure foo: - * w - variable x is neither used nor set - * 9 z : = 23; - * E --------------^--- Undefined variable - * 10 y = [1]; - * e ----------------^--- Inserted ':' - * 13 z := 345.; - * e -----------------------^--- Digits required after decimal point - * E 10 - Constant set involved in non set context - * E 11 - Type clash: real is incompatible with integer - * ... Type of expression clashed with type of variable in assignment - * E 12 - Parameter type not identical to type of var parameter x of foo - * In program mung: - * w - variable y is never used - * w - type foo is never used - * w - function bletch is never used - * E - z undefined on lines 9 13 - */ -char *Months[] = { - "Jan", "Feb", "Mar", "Apr", "May", "Jun", - "Jul", "Aug", "Sep", "Oct","Nov", "Dec", - 0 -}; -char *Days[] = { - "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", 0 -}; -char *Piroutines[] = { - "program", "function", "procedure", 0 -}; - - -static boolean structured, multiple; - -char *pi_Endmatched[] = {"End", "matched"}; -char *pi_Inserted[] = {"Inserted", "keyword", "end", "matching"}; - -char *pi_multiple[] = {"Mutiply", "defined", "label", "in", "case,", "line"}; -char *pi_structured[] = {"is", "into", "a", "structured", "statement"}; - -char *pi_und1[] = {"undefined", "on", "line"}; -char *pi_und2[] = {"undefined", "on", "lines"}; -char *pi_imp1[] = {"improperly", "used", "on", "line"}; -char *pi_imp2[] = {"improperly", "used", "on", "lines"}; - -boolean alldigits(string) - reg char *string; -{ - for (; *string && isdigit(*string); string++) - continue; - return(*string == '\0'); -} -boolean instringset(member, set) - char *member; - reg char **set; -{ - for(; *set; set++){ - if (strcmp(*set, member) == 0) - return(TRUE); - } - return(FALSE); -} - -boolean isdateformat(wordc, wordv) - int wordc; - char **wordv; -{ - return( - (wordc == 5) - && (instringset(wordv[0], Days)) - && (instringset(wordv[1], Months)) - && (alldigits(wordv[2])) - && (alldigits(wordv[4])) ); -} - -boolean piptr(string) - reg char *string; -{ - if (*string != '-') - return(FALSE); - while (*string && *string == '-') - string++; - if (*string != '^') - return(FALSE); - string++; - while (*string && *string == '-') - string++; - return(*string == '\0'); -} - -extern int wordc; -extern char **wordv; - -Errorclass pi() -{ - char **nwordv; - - if (wordc < 2) - return (C_UNKNOWN); - if ( ( strlen(wordv[1]) == 1) - && ( (wordv[1][0] == 'e') || (wordv[1][0] == 'E') ) - && ( piptr(wordv[2]) ) - ) { - boolean longpiptr = 0; - /* - * We have recognized a first pass error of the form: - * letter ------^---- message - * - * turn into an error message of the form: - * - * file line 'pascal errortype' letter \n |---- message - * or of the form: - * file line letter |---- message - * when there are strlen("(*[pi]") or more - * preceding '-' on the error pointer. - * - * Where the | is intended to be a down arrow, so that - * the pi error messages can be inserted above the - * line in error, instead of below. (All of the other - * langauges put thier messages before the source line, - * instead of after it as does pi.) - * - * where the pointer to the error has been truncated - * by 6 characters to account for the fact that - * the pointer points into a tab preceded input line. - */ - language = INPI; - (void)substitute(wordv[2], '^', '|'); - longpiptr = position(wordv[2],'|') > (6+8); - nwordv = wordvsplice(longpiptr ? 2 : 4, wordc, wordv+1); - nwordv[0] = strsave(currentfilename); - nwordv[1] = strsave(c_linenumber); - if (!longpiptr){ - nwordv[2] = "pascal errortype"; - nwordv[3] = wordv[1]; - nwordv[4] = strsave("%%%\n"); - if (strlen(nwordv[5]) > (8-2)) /* this is the pointer */ - nwordv[5] += (8-2); /* bump over 6 characters */ - } - wordv = nwordv - 1; /* convert to 1 based */ - wordc += longpiptr ? 2 : 4; - return(C_TRUE); - } - if ( (wordc >= 4) - && (strlen(wordv[1]) == 1) - && ( (*wordv[1] == 'E') || (*wordv[1] == 'w') || (*wordv[1] == 'e') ) - && (alldigits(wordv[2])) - && (strlen(wordv[3]) == 1) - && (wordv[3][0] == '-') - ){ - /* - * Message of the form: letter linenumber - message - * Turn into form: filename linenumber letter - message - */ - language = INPI; - nwordv = wordvsplice(1, wordc, wordv + 1); - nwordv[0] = strsave(currentfilename); - nwordv[1] = wordv[2]; - nwordv[2] = wordv[1]; - c_linenumber = wordv[2]; - wordc += 1; - wordv = nwordv - 1; - return(C_TRUE); - } - if ( (wordc >= 3) - && (strlen(wordv[1]) == 1) - && ( (*(wordv[1]) == 'E') || (*(wordv[1]) == 'w') || (*(wordv[1]) == 'e') ) - && (strlen(wordv[2]) == 1) - && (wordv[2][0] == '-') - ) { - /* - * Message of the form: letter - message - * This happens only when we are traversing the tree - * during the second pass of pi, and discover semantic - * errors. - * - * We have already (presumably) saved the header message - * and can now construct a nulled error message for the - * current file. - * - * Turns into a message of the form: - * filename (header) letter - message - * - * First, see if it is a message referring to more than - * one line number. Only of the form: - * %s undefined on line%s - * %s improperly used on line%s - */ - boolean undefined = 0; - int wordindex; - - language = INPI; - if ( (undefined = (wordvcmp(wordv+2, 3, pi_und1) == 0) ) - || (undefined = (wordvcmp(wordv+2, 3, pi_und2) == 0) ) - || (wordvcmp(wordv+2, 4, pi_imp1) == 0) - || (wordvcmp(wordv+2, 4, pi_imp2) == 0) - ){ - for (wordindex = undefined ? 5 : 6; wordindex <= wordc; - wordindex++){ - nwordv = wordvsplice(2, undefined ? 2 : 3, wordv+1); - nwordv[0] = strsave(currentfilename); - nwordv[1] = wordv[wordindex]; - if (wordindex != wordc) - erroradd(undefined ? 4 : 5, nwordv, - C_TRUE, C_UNKNOWN); - } - wordc = undefined ? 4 : 5; - wordv = nwordv - 1; - return(C_TRUE); - } - - nwordv = wordvsplice(1+3, wordc, wordv+1); - nwordv[0] = strsave(currentfilename); - nwordv[1] = strsave(c_header[0]); - nwordv[2] = strsave(c_header[1]); - nwordv[3] = strsave(c_header[2]); - wordv = nwordv - 1; - wordc += 1 + 3; - return(C_THISFILE); - } - if (strcmp(wordv[1], "...") == 0){ - /* - * have a continuation error message - * of the form: ... message - * Turn into form : filename linenumber message - */ - language = INPI; - nwordv = wordvsplice(1, wordc, wordv+1); - nwordv[0] = strsave(currentfilename); - nwordv[1] = strsave(c_linenumber); - wordv = nwordv - 1; - wordc += 1; - return(C_TRUE); - } - if( (wordc == 6) - && (lastchar(wordv[6]) == ':') - && (isdateformat(5, wordv + 1)) - ){ - /* - * Have message that tells us we have changed files - */ - language = INPI; - currentfilename = strsave(wordv[6]); - clob_last(currentfilename, '\0'); - return(C_SYNC); - } - if( (wordc == 3) - && (strcmp(wordv[1], "In") == 0) - && (lastchar(wordv[3]) == ':') - && (instringset(wordv[2], Piroutines)) - ) { - language = INPI; - c_header = wordvsplice(0, wordc, wordv+1); - return(C_SYNC); - } - /* - * now, check for just the line number followed by the text - */ - if (alldigits(wordv[1])){ - language = INPI; - c_linenumber = wordv[1]; - return(C_IGNORE); - } - /* - * Attempt to match messages refering to a line number - * - * Multiply defined label in case, lines %d and %d - * Goto %s from line %d is into a structured statement - * End matched %s on line %d - * Inserted keyword end matching %s on line %d - */ - multiple = structured = 0; - if ( - ( (wordc == 6) && (wordvcmp(wordv+1, 2, pi_Endmatched) == 0)) - || ( (wordc == 8) && (wordvcmp(wordv+1, 4, pi_Inserted) == 0)) - || ( multiple = ((wordc == 9) && (wordvcmp(wordv+1,6, pi_multiple) == 0) ) ) - || ( structured = ((wordc == 10) && (wordvcmp(wordv+6,5, pi_structured) == 0 ) )) - ){ - language = INPI; - nwordv = wordvsplice(2, wordc, wordv+1); - nwordv[0] = strsave(currentfilename); - nwordv[1] = structured ? wordv [5] : wordv[wordc]; - wordc += 2; - wordv = nwordv - 1; - if (!multiple) - return(C_TRUE); - erroradd(wordc, nwordv, C_TRUE, C_UNKNOWN); - nwordv = wordvsplice(0, wordc, nwordv); - nwordv[1] = wordv[wordc - 2]; - return(C_TRUE); - } - return(C_UNKNOWN); -} |
