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#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include "util.h"
#include "cc.h"
struct scope filescope;
void
scopeinit(void)
{
static struct decl builtins[] = {
{.name = "__builtin_alloca", .kind = DECLBUILTIN, .u.builtin = BUILTINALLOCA},
{.name = "__builtin_constant_p", .kind = DECLBUILTIN, .u.builtin = BUILTINCONSTANTP},
{.name = "__builtin_expect", .kind = DECLBUILTIN, .u.builtin = BUILTINEXPECT},
{.name = "__builtin_inff", .kind = DECLBUILTIN, .u.builtin = BUILTININFF},
{.name = "__builtin_nanf", .kind = DECLBUILTIN, .u.builtin = BUILTINNANF},
{.name = "__builtin_offsetof", .kind = DECLBUILTIN, .u.builtin = BUILTINOFFSETOF},
{.name = "__builtin_types_compatible_p", .kind = DECLBUILTIN, .u.builtin = BUILTINTYPESCOMPATIBLEP},
{.name = "__builtin_unreachable", .kind = DECLBUILTIN, .u.builtin = BUILTINUNREACHABLE},
{.name = "__builtin_va_arg", .kind = DECLBUILTIN, .u.builtin = BUILTINVAARG},
{.name = "__builtin_va_copy", .kind = DECLBUILTIN, .u.builtin = BUILTINVACOPY},
{.name = "__builtin_va_end", .kind = DECLBUILTIN, .u.builtin = BUILTINVAEND},
{.name = "__builtin_va_start", .kind = DECLBUILTIN, .u.builtin = BUILTINVASTART},
};
static struct decl valist;
struct decl *d;
for (d = builtins; d < builtins + LEN(builtins); ++d)
scopeputdecl(&filescope, d);
valist.name = "__builtin_va_list";
valist.kind = DECLTYPE;
valist.type = targ->typevalist;
scopeputdecl(&filescope, &valist);
}
struct scope *
mkscope(struct scope *parent)
{
struct scope *s;
s = xmalloc(sizeof(*s));
s->decls.len = 0;
s->tags.len = 0;
s->breaklabel = parent->breaklabel;
s->continuelabel = parent->continuelabel;
s->switchcases = parent->switchcases;
s->parent = parent;
return s;
}
struct scope *
delscope(struct scope *s)
{
struct scope *parent = s->parent;
if (s->decls.len)
mapfree(&s->decls, NULL);
if (s->tags.len)
mapfree(&s->tags, NULL);
free(s);
return parent;
}
struct decl *
scopegetdecl(struct scope *s, const char *name, bool recurse)
{
struct decl *d;
struct mapkey k;
mapkey(&k, name, strlen(name));
do {
d = s->decls.len ? mapget(&s->decls, &k) : NULL;
s = s->parent;
} while (!d && s && recurse);
return d;
}
struct type *
scopegettag(struct scope *s, const char *name, bool recurse)
{
struct type *t;
struct mapkey k;
mapkey(&k, name, strlen(name));
do {
t = s->tags.len ? mapget(&s->tags, &k) : NULL;
s = s->parent;
} while (!t && s && recurse);
return t;
}
void
scopeputdecl(struct scope *s, struct decl *d)
{
struct mapkey k;
if (!s->decls.len)
mapinit(&s->decls, 32);
mapkey(&k, d->name, strlen(d->name));
*mapput(&s->decls, &k) = d;
}
void
scopeputtag(struct scope *s, const char *name, struct type *t)
{
struct mapkey k;
if (!s->tags.len)
mapinit(&s->tags, 32);
mapkey(&k, name, strlen(name));
*mapput(&s->tags, &k) = t;
}
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