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[cexpr] Add support for the bool type

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It's currently rather limited, but enough to make use of it in vkgen and
vkparse.
This commit is contained in:
Bill Currie 2023-06-26 10:59:16 +09:00
parent f5e7d5fbbc
commit 0a50fb1bf1
2 changed files with 53 additions and 0 deletions
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2
include/QF/cexpr.h
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@ -140,6 +140,8 @@ void cexpr_init_symtab (exprtab_t *symtab, exprctx_t *ctx);
char *cexpr_yyget_text (void *scanner);
extern exprenum_t cexpr_bool_enum;
extern exprtype_t cexpr_bool;
extern exprtype_t cexpr_int;
extern exprtype_t cexpr_uint;
extern exprtype_t cexpr_size_t;

51
libs/util/cexpr-type.c
View file

@ -66,6 +66,57 @@ pre##_##opname (const exprval_t *a, exprval_t *b, exprctx_t *ctx) \
(*(type *) b->value) = op (*(type *) a->value); \
}
BINOP(bool, and, bool, &)
BINOP(bool, or, bool, |)
BINOP(bool, xor, bool, ^)
UNOP(bool, not, bool, !)
static const char *
bool_get_string (const exprval_t *val, va_ctx_t *va_ctx)
{
return val->value ? "true" : "false";
}
binop_t bool_binops[] = {
{ '&', &cexpr_bool, &cexpr_bool, bool_and },
{ '|', &cexpr_bool, &cexpr_bool, bool_or },
{ '^', &cexpr_bool, &cexpr_bool, bool_xor },
{ '=', &cexpr_plitem, &cexpr_bool, cexpr_cast_plitem },
{}
};
unop_t bool_unops[] = {
{ '!', &cexpr_bool, bool_not },
{}
};
exprtype_t cexpr_bool = {
.name = "bool",
.size = sizeof (bool),
.binops = bool_binops,
.unops = bool_unops,
.data = &cexpr_bool_enum,
.get_string = bool_get_string,
};
static int bool_values[] = {
false,
true,
};
static exprsym_t bool_symbols[] = {
{"false", &cexpr_bool, bool_values + 0},
{"true", &cexpr_bool, bool_values + 1},
{}
};
static exprtab_t bool_symtab = {
bool_symbols,
};
exprenum_t cexpr_bool_enum = {
&cexpr_bool,
&bool_symtab,
};
BINOP(int, shl, int, <<)
BINOP(int, shr, int, >>)
BINOP(int, add, int, +)