#define DEBUG_EXPR 0
+static int expr_eq(struct expr *e1, struct expr *e2);
+static struct expr *expr_eliminate_yn(struct expr *e);
+static struct expr *expr_extract_eq_and(struct expr **ep1, struct expr **ep2);
+static struct expr *expr_extract_eq_or(struct expr **ep1, struct expr **ep2);
+static void expr_extract_eq(enum expr_type type, struct expr **ep, struct expr **ep1, struct expr **ep2);
+
struct expr *expr_alloc_symbol(struct symbol *sym)
{
- struct expr *e = calloc(1, sizeof(*e));
+ struct expr *e = xcalloc(1, sizeof(*e));
e->type = E_SYMBOL;
e->left.sym = sym;
return e;
struct expr *expr_alloc_one(enum expr_type type, struct expr *ce)
{
- struct expr *e = calloc(1, sizeof(*e));
+ struct expr *e = xcalloc(1, sizeof(*e));
e->type = type;
e->left.expr = ce;
return e;
struct expr *expr_alloc_two(enum expr_type type, struct expr *e1, struct expr *e2)
{
- struct expr *e = calloc(1, sizeof(*e));
+ struct expr *e = xcalloc(1, sizeof(*e));
e->type = type;
e->left.expr = e1;
e->right.expr = e2;
struct expr *expr_alloc_comp(enum expr_type type, struct symbol *s1, struct symbol *s2)
{
- struct expr *e = calloc(1, sizeof(*e));
+ struct expr *e = xcalloc(1, sizeof(*e));
e->type = type;
e->left.sym = s1;
e->right.sym = s2;
if (!org)
return NULL;
- e = malloc(sizeof(*org));
+ e = xmalloc(sizeof(*org));
memcpy(e, org, sizeof(*org));
switch (org->type) {
case E_SYMBOL:
#undef e1
#undef e2
-int expr_eq(struct expr *e1, struct expr *e2)
+static int expr_eq(struct expr *e1, struct expr *e2)
{
int res, old_count;
return 0;
}
-struct expr *expr_eliminate_yn(struct expr *e)
+static struct expr *expr_eliminate_yn(struct expr *e)
{
struct expr *tmp;
return false;
}
-struct expr *expr_extract_eq_and(struct expr **ep1, struct expr **ep2)
+static struct expr *expr_extract_eq_and(struct expr **ep1, struct expr **ep2)
{
struct expr *tmp = NULL;
expr_extract_eq(E_AND, &tmp, ep1, ep2);
return tmp;
}
-struct expr *expr_extract_eq_or(struct expr **ep1, struct expr **ep2)
+static struct expr *expr_extract_eq_or(struct expr **ep1, struct expr **ep2)
{
struct expr *tmp = NULL;
expr_extract_eq(E_OR, &tmp, ep1, ep2);
return tmp;
}
-void expr_extract_eq(enum expr_type type, struct expr **ep, struct expr **ep1, struct expr **ep2)
+static void expr_extract_eq(enum expr_type type, struct expr **ep, struct expr **ep1, struct expr **ep2)
{
#define e1 (*ep1)
#define e2 (*ep2)
}
}
-int expr_compare_type(enum expr_type t1, enum expr_type t2)
+static int expr_compare_type(enum expr_type t1, enum expr_type t2)
{
-#if 0
- return 1;
-#else
if (t1 == t2)
return 0;
switch (t1) {
}
printf("[%dgt%d?]", t1, t2);
return 0;
-#endif
}
static inline struct expr *