ref: 85cdc11b3ad306110ae43fe5b35c04c37cd776fd
dir: /parse/type.c/
#include <stdlib.h>
#include <stdio.h>
#include <stdint.h>
#include <ctype.h>
#include <string.h>
#include <assert.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include "parse.h"
typedef struct Typename Typename;
struct Typename {
Ty ty;
char *name;
};
Type *littypes[Nlit] = {NULL,};
Type **typetab = NULL;
int ntypes;
static Cstr **cstrtab;
static int ncstr;
static Typename typenames[] = {
{Tyvoid, "void"},
{Tychar, "char"},
{Tybyte, "byte"},
{Tyint8, "int8"},
{Tyint16, "int16"},
{Tyint32, "int32"},
{Tyint64, "int64"},
{Tyuint8, "uint8"},
{Tyuint16, "uint16"},
{Tyuint32, "uint32"},
{Tyuint64, "uint64"},
{Tyfloat32, "float32"},
{Tyfloat64, "float64"},
{Tybad, NULL}
};
Type *mkty(int line, Ty ty)
{
Type *t;
t = zalloc(sizeof(Type));
t->type = ty;
t->tid = ntypes++;
typetab = xrealloc(typetab, ntypes*sizeof(Type*));
return t;
}
/* steals memb, funcs */
Cstr *mkcstr(int line, char *name, Node **memb, size_t nmemb, Node **funcs, size_t nfuncs)
{
Cstr *c;
c = zalloc(sizeof(Cstr));
c->name = strdup(name);
c->memb = memb;
c->nmemb = nmemb;
c->funcs = funcs;
c->nfuncs = nfuncs;
c->cid = ncstr++;
cstrtab = xrealloc(cstrtab, ncstr*sizeof(Cstr*));
return c;
}
Type *mktyvar(int line)
{
Type *t;
t = mkty(line, Tyvar);
return t;
}
Type *mktyparam(int line, char *name)
{
Type *t;
t = mkty(line, Tyvar);
t->pname = strdup(name);
return t;
}
Type *mktynamed(int line, Node *name)
{
int i;
Type *t;
/* is it a built in type? */
if (name->name.nparts == 1)
for (i = 0; typenames[i].name; i++)
if (!strcmp(typenames[i].name, name->name.parts[0]))
return mkty(line, typenames[i].ty);
/* if not, resolve it in the type inference stage */
t = mkty(line, Tyname);
t->name = name;
return t;
}
Type *mktyarray(int line, Type *base, Node *sz)
{
Type *t;
t = mkty(line, Tyarray);
t->abase = base;
t->asize = sz;
return t;
}
Type *mktyslice(int line, Type *base)
{
Type *t;
t = mkty(line, Tyslice);
t->sbase = base;
return t;
}
Type *mktyptr(int line, Type *base)
{
Type *t;
t = mkty(line, Typtr);
t->pbase = base;
return t;
}
Type *mktyfunc(int line, Node **args, size_t nargs, Type *ret)
{
Type *t;
int i;
t = mkty(line, Tyfunc);
t->nsub = nargs + 1;
t->fnsub = xalloc((1 + nargs)*sizeof(Type));
t->fnsub[0] = ret;
for (i = 0; i < nargs; i++)
t->fnsub[i + 1] = decltype(args[i]);
return t;
}
Type *mktystruct(int line, Node **decls, size_t ndecls)
{
Type *t;
t = mkty(line, Tystruct);
t->nsub = ndecls;
t->sdecls = memdup(decls, ndecls*sizeof(Node *));
return t;
}
Type *mktyunion(int line, Node **decls, size_t ndecls)
{
Type *t;
t = mkty(line, Tyunion);
t->udecls = decls;
return t;
}
Type *mktyenum(int line, Node **decls, size_t ndecls)
{
Type *t;
t = mkty(line, Tyenum);
t->edecls = decls;
return t;
}
void tlappend(Type ***tl, int *len, Type *t)
{
*tl = xrealloc(tl, (*len + 1)*sizeof(Type*));
(*tl)[*len] = t;
(*len)++;
}
static int namefmt(char *buf, size_t len, Node *name)
{
int i;
char *p;
char *end;
char *sep;
p = buf;
end = p + len;
sep = "";
for (i = 0; i < name->name.nparts; i++) {
p += snprintf(p, end - p, "%s%s", sep, name->name.parts[i]);
sep = ".";
}
return len - (end - p);
}
static int cstrfmt(char *buf, size_t len, Type *t)
{
return 0;
}
static int tybfmt(char *buf, size_t len, Type *t)
{
char *p;
char *end;
int i;
char *sep;
p = buf;
end = p + len;
sep = "";
if (!t) {
p += snprintf(p, end - p, "tynil");
return len - (end - p);
}
switch (t->type) {
case Tybad: p += snprintf(p, end - p, "BAD"); break;
case Tyvoid: p += snprintf(p, end - p, "void"); break;
case Tybool: p += snprintf(p, end - p, "bool"); break;
case Tychar: p += snprintf(p, end - p, "char"); break;
case Tyint8: p += snprintf(p, end - p, "int8"); break;
case Tyint16: p += snprintf(p, end - p, "int16"); break;
case Tyint: p += snprintf(p, end - p, "int"); break;
case Tyint32: p += snprintf(p, end - p, "int32"); break;
case Tyint64: p += snprintf(p, end - p, "int64"); break;
case Tylong: p += snprintf(p, end - p, "long"); break;
case Tybyte: p += snprintf(p, end - p, "byte"); break;
case Tyuint8: p += snprintf(p, end - p, "uint8"); break;
case Tyuint16: p += snprintf(p, end - p, "uint16"); break;
case Tyuint: p += snprintf(p, end - p, "uint"); break;
case Tyuint32: p += snprintf(p, end - p, "uint32"); break;
case Tyuint64: p += snprintf(p, end - p, "uint64"); break;
case Tyulong: p += snprintf(p, end - p, "ulong"); break;
case Tyfloat32: p += snprintf(p, end - p, "float32"); break;
case Tyfloat64: p += snprintf(p, end - p, "float64"); break;
case Tyvalist: p += snprintf(p, end - p, "..."); break;
case Typtr:
p += tybfmt(p, end - p, t->pbase);
p += snprintf(p, end - p, "*");
break;
case Tyslice:
p += tybfmt(p, end - p, t->sbase);
p += snprintf(p, end - p, "[,]");
break;
case Tyarray:
p += tybfmt(p, end - p, t->abase);
p += snprintf(p, end - p, "[LEN]");
break;
case Tyfunc:
p += snprintf(p, end - p, "(");
for (i = 1; i < t->nsub; i++) {
p += snprintf(p, end - p, "%s", sep);
p += tybfmt(p, end - p, t->fnsub[i]);
sep = ", ";
}
p += snprintf(p, end - p, " -> ");
p += tybfmt(p, end - p, t->fnsub[0]);
p += snprintf(p, end - p, ")");
break;
case Tytuple:
p += snprintf(p, end - p, "[");
for (i = 1; i < t->nsub; i++) {
p += snprintf(p, end - p, "%s", sep);
p += tybfmt(p, end - p, t->tusub[i]);
sep = ", ";
}
p += snprintf(p, end - p, "]");
break;
case Tyvar:
p += snprintf(p, end - p, "@$%d", t->tid);
break;
case Typaram:
p += snprintf(p, end - p, "@%s", t->pname);
break;
case Tyname:
p += namefmt(p, end - p, t->name);
break;
case Tystruct:
case Tyunion:
case Tyenum:
snprintf(p, end - p, "TYPE ?");
break;
case Ntypes:
die("Ntypes is not a type");
break;
}
p += cstrfmt(p, end - p, t);
return len - (end - p);
}
char *tyfmt(char *buf, size_t len, Type *t)
{
tybfmt(buf, len, t);
return buf;
}
char *tystr(Type *t)
{
char buf[1024];
tyfmt(buf, 1024, t);
return strdup(buf);
}
static Type *tybuiltins[Ntypes];
#if 0
static Cstr *cstrbuiltins[Ncstr];
#endif
void tyinit(void)
{
#if 0
int i;
#define Tc(c) \
cstrbuiltins[c] = mkcstr(-1, c);
#include "cstr.def"
#undef Tc
#endif
#define Ty(t) \
tybuiltins[t] = mkty(-1, t);
#include "types.def"
#undef Ty
#if 0
/* bool :: tctest */
constrain(tybuiltins[Tybool], cstrbuiltins[Tctest]);
/* <integer types> :: tcnum, tcint, tctest */
for (i = Tyint8; i < Tyfloat32; i++) {
constrain(tybuiltins[i], cstrbuiltins[Tcnum]);
constrain(tybuiltins[i], cstrbuiltins[Tcint]);
constrain(tybuiltins[i], cstrbuiltins[Tctest]);
}
/* <floats> :: tcnum */
constrain(tybuiltins[Tyfloat32], cstrbuiltins[Tcnum]);
constrain(tybuiltins[Tyfloat64], cstrbuiltins[Tcnum]);
/* @a* :: tctest, tcslice */
constrain(tybuiltins[Typtr], cstrbuiltins[Tctest]);
constrain(tybuiltins[Typtr], cstrbuiltins[Tcslice]);
/* @a[,] :: tctest, tcslice, tcidx */
constrain(tybuiltins[Tyslice], cstrbuiltins[Tctest]);
constrain(tybuiltins[Tyslice], cstrbuiltins[Tcslice]);
constrain(tybuiltins[Tyslice], cstrbuiltins[Tcidx]);
/* enum */
constrain(tybuiltins[Tyenum], cstrbuiltins[Tcint]);
constrain(tybuiltins[Tyenum], cstrbuiltins[Tcnum]);
#endif
}