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b2/: add "ignore" keyword for substitution rules

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This allows us to decide in the project-specific rules how to indicate
DNP/NC/DNS/... parts. In the original BOOM, F1 == NC was hard-coded.
This commit is contained in:
Werner Almesberger 2012-05-21 23:17:33 -03:00
parent 2014e6053e
commit d2171eba47
7 changed files with 40 additions and 16 deletions
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4
b2/SUBST
View File

@ -1,10 +1,12 @@
FN=DNP { ignore }
REF=R[0-9]* {
T=R
VAL=(#R) { R=$1 }
TOL <= 5%
FN=*% { TOL<=$$ }
break REF
// end break again
// end break again ignore
}
/*

5
b2/boom.c
View File

@ -48,7 +48,10 @@ static void do_substitutions(void)
const struct param *var;
const struct part **parts, **p;
out = substitute(substitutions, vars);
if (!substitute(substitutions, vars, &out)) {
fprintf(stderr, "ignore\n");
return;
}
if (select_parts) {
parts = select_parametric(out, &hierarchy);
if (!parts) {

7
b2/lang.y
View File

@ -613,9 +613,12 @@ block:
}
| WORD
{
if (strcmp($1, "end"))
yyerrorf("unknown keyword \"%s\"", $1);
if (!strcmp($1, "end"))
$$ = subst_end();
else if (!strcmp($1, "ignore"))
$$ = subst_ignore();
else
yyerrorf("unknown keyword \"%s\"", $1);
}
;

14
b2/subex.c
View File

@ -30,9 +30,9 @@
static const char *fn = NULL, *f[FIELDS];
/* Jump target that can never be reached. */
/* Jump targets that can never be reached. */
static struct subst jump_end;
static struct subst jump_ignore;
static char *canonicalize(const char *s, char unit)
@ -206,6 +206,8 @@ static const struct subst *recurse_sub(const struct subst *sub,
break;
case st_end:
return &jump_end;
case st_ignore:
return &jump_ignore;
case st_break:
sub = sub->u.jump->next;
continue;
@ -221,9 +223,9 @@ static const struct subst *recurse_sub(const struct subst *sub,
}
struct param *substitute(const struct subst *sub, const struct param *in)
int substitute(const struct subst *sub, const struct param *in,
struct param **out)
{
struct param *out = NULL;
int i;
char tmp[4];
@ -234,6 +236,6 @@ struct param *substitute(const struct subst *sub, const struct param *in)
f[i] = unique(tmp);
}
}
recurse_sub(sub, in, NULL, NULL, NULL, &out);
return out;
*out = NULL;
return recurse_sub(sub, in, NULL, NULL, NULL, out) != &jump_ignore;
}

3
b2/subex.h
View File

@ -17,6 +17,7 @@
#include "subst.h"
struct param *substitute(const struct subst *sub, const struct param *in);
int substitute(const struct subst *sub, const struct param *in,
struct param **out);
#endif /* !SUBEX_H */

11
b2/subst.c
View File

@ -245,6 +245,12 @@ struct subst *subst_end(void)
}
struct subst *subst_ignore(void)
{
return alloc_subst(st_ignore);
}
struct subst *subst_break(const char *block)
{
struct subst *sub;
@ -357,6 +363,8 @@ static void recurse_fin(struct subst *sub, const struct parent *parent)
break;
case st_end:
break;
case st_ignore:
break;
case st_break:
case st_again:
sub->u.jump = resolve_jump(sub->u.tmp, parent);
@ -425,6 +433,9 @@ static void recurse_dump(FILE *file, const struct subst *sub, int level)
case st_end:
fprintf(file, "end\n");
break;
case st_ignore:
fprintf(file, "ignore\n");
break;
case st_break:
fprintf(file, "break %s\n", sub->u.jump->u.match.src);
break;

12
b2/subst.h
View File

@ -37,11 +37,12 @@ struct chunk {
};
enum subst_type {
st_match,
st_assign,
st_end,
st_break,
st_again,
st_match, /* try to match a variable */
st_assign, /* assign to a variable */
st_end, /* end the substitutions, accepting the part */
st_ignore, /* ignore the part */
st_break, /* jump to an outer block */
st_again, /* repeat an outer block */
};
struct subst {
@ -73,6 +74,7 @@ struct subst {
struct subst *subst_match(const char *src, const char *re);
struct subst *subst_assign(const char *dst, enum relop op, const char *pat);
struct subst *subst_end(void);
struct subst *subst_ignore(void);
struct subst *subst_break(const char *block);
struct subst *subst_again(const char *block);