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Filter: Make the IF instruction three-args

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Dropping another old quirk.
This commit is contained in:
Jan Maria Matejka 2018-05-30 17:18:56 +02:00
parent 13c0be19d3
commit f76025f4fc
2 changed files with 8 additions and 11 deletions
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8
filter/config.Y
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@ -996,12 +996,10 @@ cmd:
$$->a2.p = $4; $$->a2.p = $4;
} }
| IF term THEN block ELSE block { | IF term THEN block ELSE block {
struct f_inst *i = f_new_inst(FI_CONDITION);
i->a1.p = $2;
i->a2.p = $4;
$$ = f_new_inst(FI_CONDITION); $$ = f_new_inst(FI_CONDITION);
$$->a1.p = i; $$->a1.p = $2;
$$->a2.p = $6; $$->a2.p = $4;
$$->a3.p = $6;
} }
| SYM '=' term ';' { | SYM '=' term ';' {
DBG( "Ook, we'll set value\n" ); DBG( "Ook, we'll set value\n" );

11
filter/filter.c
View File

@ -898,14 +898,13 @@ interpret(struct f_inst *what)
ARG_ANY(1); ARG_ANY(1);
val_format(v1, &f_buf); val_format(v1, &f_buf);
break; break;
case FI_CONDITION: /* ? has really strange error value, so we can implement if ... else nicely :-) */ case FI_CONDITION:
ARG(1, T_BOOL); ARG(1, T_BOOL);
if (v1.val.i) { if (v1.val.i) {
ARG_ANY(2); ARG_ANY(2);
res.val.i = 0; } else {
} else ARG_ANY(3);
res.val.i = 1; }
res.type = T_BOOL;
break; break;
case FI_NOP: case FI_NOP:
debug( "No operation\n" ); debug( "No operation\n" );
@ -1670,7 +1669,7 @@ i_same(struct f_inst *f1, struct f_inst *f2)
return 0; return 0;
break; break;
case FI_PRINT: case FI_LENGTH: ONEARG; break; case FI_PRINT: case FI_LENGTH: ONEARG; break;
case FI_CONDITION: TWOARGS; break; case FI_CONDITION: THREEARGS; break;
case FI_NOP: case FI_EMPTY: break; case FI_NOP: case FI_EMPTY: break;
case FI_PRINT_AND_DIE: ONEARG; A2_SAME; break; case FI_PRINT_AND_DIE: ONEARG; A2_SAME; break;
case FI_PREF_GET: case FI_PREF_GET: