[src/trunk]: src/usr.bin/make make(1): rename CondParser.condExpr to p

[rillig <rillig%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/cc393cab0681
branches:  trunk
changeset: 976010:cc393cab0681
user:      rillig <rillig%NetBSD.org@localhost>
date:      Fri Sep 11 04:18:44 2020 +0000

description:
make(1): rename CondParser.condExpr to p

The prefix "cond" was needed when this struct field was a global
variable.  The main name "expr" was not precise enough since this code is
about parsing a condition, not an expression.

During parsing, this variable does not contain the whole expression but
a pointer to the remaining part of the condition, therefore the name
"expr" had been confusing.

diffstat:

 usr.bin/make/cond.c |  106 ++++++++++++++++++++++++++--------------------------
 1 files changed, 53 insertions(+), 53 deletions(-)

diffs (281 lines):

diff -r da062878c9ee -r cc393cab0681 usr.bin/make/cond.c
--- a/usr.bin/make/cond.c       Fri Sep 11 04:07:44 2020 +0000
+++ b/usr.bin/make/cond.c       Fri Sep 11 04:18:44 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: cond.c,v 1.121 2020/09/11 04:07:44 rillig Exp $        */
+/*     $NetBSD: cond.c,v 1.122 2020/09/11 04:18:44 rillig Exp $        */
 
 /*
  * Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
@@ -70,14 +70,14 @@
  */
 
 #ifndef MAKE_NATIVE
-static char rcsid[] = "$NetBSD: cond.c,v 1.121 2020/09/11 04:07:44 rillig Exp $";
+static char rcsid[] = "$NetBSD: cond.c,v 1.122 2020/09/11 04:18:44 rillig Exp $";
 #else
 #include <sys/cdefs.h>
 #ifndef lint
 #if 0
 static char sccsid[] = "@(#)cond.c     8.2 (Berkeley) 1/2/94";
 #else
-__RCSID("$NetBSD: cond.c,v 1.121 2020/09/11 04:07:44 rillig Exp $");
+__RCSID("$NetBSD: cond.c,v 1.122 2020/09/11 04:18:44 rillig Exp $");
 #endif
 #endif /* not lint */
 #endif
@@ -150,7 +150,7 @@
 
 typedef struct {
     const struct If *if_info;  /* Info for current statement */
-    const char *condExpr;      /* The expression to parse */
+    const char *p;             /* The remaining condition to parse */
     Token curr;                        /* Single push-back token used in parsing */
 } CondParser;
 
@@ -191,8 +191,8 @@
 static void
 CondParser_SkipWhitespace(CondParser *par)
 {
-    while (isspace((unsigned char)par->condExpr[0]))
-       par->condExpr++;
+    while (isspace((unsigned char)par->p[0]))
+       par->p++;
 }
 
 /* Parse the argument of a built-in function.
@@ -415,25 +415,25 @@
     Buf_Init(&buf, 0);
     str = NULL;
     *freeIt = NULL;
-    *quoted = qt = *par->condExpr == '"' ? 1 : 0;
+    *quoted = qt = *par->p == '"' ? 1 : 0;
     if (qt)
-       par->condExpr++;
-    for (start = par->condExpr; *par->condExpr && str == NULL;) {
-       switch (*par->condExpr) {
+       par->p++;
+    for (start = par->p; *par->p && str == NULL;) {
+       switch (*par->p) {
        case '\\':
-           par->condExpr++;
-           if (par->condExpr[0] != '\0') {
-               Buf_AddByte(&buf, *par->condExpr);
-               par->condExpr++;
+           par->p++;
+           if (par->p[0] != '\0') {
+               Buf_AddByte(&buf, *par->p);
+               par->p++;
            }
            continue;
        case '"':
            if (qt) {
-               par->condExpr++;        /* we don't want the quotes */
+               par->p++;       /* we don't want the quotes */
                goto got_str;
            }
-           Buf_AddByte(&buf, *par->condExpr); /* likely? */
-           par->condExpr++;
+           Buf_AddByte(&buf, *par->p); /* likely? */
+           par->p++;
            continue;
        case ')':
        case '!':
@@ -444,14 +444,14 @@
        case '\t':
            if (!qt)
                goto got_str;
-           Buf_AddByte(&buf, *par->condExpr);
-           par->condExpr++;
+           Buf_AddByte(&buf, *par->p);
+           par->p++;
            continue;
        case '$':
            /* if we are in quotes, then an undefined variable is ok */
            eflags = ((!qt && doEval) ? VARE_UNDEFERR : 0) |
                     (doEval ? VARE_WANTRES : 0);
-           str = Var_Parse(par->condExpr, VAR_CMD, eflags, &len, freeIt);
+           str = Var_Parse(par->p, VAR_CMD, eflags, &len, freeIt);
            if (str == var_Error) {
                if (*freeIt) {
                    free(*freeIt);
@@ -464,16 +464,16 @@
                str = NULL;
                goto cleanup;
            }
-           par->condExpr += len;
+           par->p += len;
            /*
             * If the '$' was first char (no quotes), and we are
             * followed by space, the operator or end of expression,
             * we are done.
             */
-           if ((par->condExpr == start + len) &&
-               (*par->condExpr == '\0' ||
-                isspace((unsigned char)*par->condExpr) ||
-                strchr("!=><)", *par->condExpr))) {
+           if ((par->p == start + len) &&
+               (*par->p == '\0' ||
+                isspace((unsigned char)*par->p) ||
+                strchr("!=><)", *par->p))) {
                goto cleanup;
            }
 
@@ -495,8 +495,8 @@
                str = NULL;
                goto cleanup;
            }
-           Buf_AddByte(&buf, *par->condExpr);
-           par->condExpr++;
+           Buf_AddByte(&buf, *par->p);
+           par->p++;
            continue;
        }
     }
@@ -556,16 +556,16 @@
      * known relational operator, pretend we got a
      * != 0 comparison.
      */
-    op = par->condExpr;
-    switch (*par->condExpr) {
+    op = par->p;
+    switch (*par->p) {
     case '!':
     case '=':
     case '<':
     case '>':
-       if (par->condExpr[1] == '=') {
-           par->condExpr += 2;
+       if (par->p[1] == '=') {
+           par->p += 2;
        } else {
-           par->condExpr += 1;
+           par->p += 1;
        }
        break;
     default:
@@ -575,7 +575,7 @@
        }
        /* For .ifxxx "..." check for non-empty string. */
        if (lhsQuoted) {
-           t = lhs[0] != 0;
+           t = lhs[0] != '\0';
            goto done;
        }
        /* For .ifxxx <number> compare against zero */
@@ -584,7 +584,7 @@
            goto done;
        }
        /* For .if ${...} check for non-empty string (defProc is ifdef). */
-       if (par->if_info->form[0] == 0) {
+       if (par->if_info->form[0] == '\0') {
            t = lhs[0] != 0;
            goto done;
        }
@@ -595,7 +595,7 @@
 
     CondParser_SkipWhitespace(par);
 
-    if (*par->condExpr == '\0') {
+    if (*par->p == '\0') {
        Parse_Error(PARSE_WARNING,
                    "Missing right-hand-side of operator");
        goto done;
@@ -745,7 +745,7 @@
     Token t;
     char *arg = NULL;
     int arglen;
-    const char *cp = par->condExpr;
+    const char *cp = par->p;
     const char *cp1;
 
     for (fn_def = fn_defs; fn_def->fn_name != NULL; fn_def++) {
@@ -760,18 +760,18 @@
 
        arglen = fn_def->fn_getarg(doEval, &cp, &arg, fn_def->fn_name);
        if (arglen <= 0) {
-           par->condExpr = cp;
+           par->p = cp;
            return arglen < 0 ? TOK_ERROR : TOK_FALSE;
        }
        /* Evaluate the argument using the required function. */
        t = !doEval || fn_def->fn_proc(arglen, arg);
        free(arg);
-       par->condExpr = cp;
+       par->p = cp;
        return t;
     }
 
     /* Push anything numeric through the compare expression */
-    cp = par->condExpr;
+    cp = par->p;
     if (isdigit((unsigned char)cp[0]) || strchr("+-", cp[0]))
        return compare_expression(par, doEval);
 
@@ -788,7 +788,7 @@
        continue;
     if (*cp1 == '=' || *cp1 == '!')
        return compare_expression(par, doEval);
-    par->condExpr = cp;
+    par->p = cp;
 
     /*
      * Evaluate the argument using the default function.
@@ -813,36 +813,36 @@
        return t;
     }
 
-    while (par->condExpr[0] == ' ' || par->condExpr[0] == '\t') {
-       par->condExpr++;
+    while (par->p[0] == ' ' || par->p[0] == '\t') {
+       par->p++;
     }
 
-    switch (par->condExpr[0]) {
+    switch (par->p[0]) {
 
     case '(':
-       par->condExpr++;
+       par->p++;
        return TOK_LPAREN;
 
     case ')':
-       par->condExpr++;
+       par->p++;
        return TOK_RPAREN;
 
     case '|':
-       par->condExpr++;
-       if (par->condExpr[0] == '|') {
-           par->condExpr++;
+       par->p++;
+       if (par->p[0] == '|') {
+           par->p++;
        }
        return TOK_OR;
 
     case '&':
-       par->condExpr++;
-       if (par->condExpr[0] == '&') {
-           par->condExpr++;
+       par->p++;
+       if (par->p[0] == '&') {
+           par->p++;
        }
        return TOK_AND;
 
     case '!':
-       par->condExpr++;
+       par->p++;
        return TOK_NOT;
 
     case '#':
@@ -1040,7 +1040,7 @@
     assert(info != NULL);
 
     par.if_info = info;
-    par.condExpr = line;
+    par.p = line;
     par.curr = TOK_NONE;
 
     rval = do_Cond_EvalExpression(&par, value);