REFACTOR: finish renaming

1 files changed, 465 insertions, 0 deletions

diff --git a/src/antcc.h b/src/antcc.h
new file mode 100644
index 0000000..a24aa3d
--- /dev/null
+++ b/src/antcc.h
@@ -0,0 +1,465 @@
+#ifndef COMMON_H_
+#define COMMON_H_
+
+#include <stdarg.h>
+#include <stddef.h>
+#include <string.h>
+
+#ifdef __clang__ /* stop linter from complaining about "unused" inline functions */
+#pragma GCC diagnostic ignored "-Wunused-function"
+#endif
+
+#define bool _Bool
+typedef unsigned char uchar;
+typedef   signed char schar;
+typedef unsigned short ushort;
+typedef unsigned long long uvlong;
+typedef   signed long long vlong;
+typedef unsigned uint;
+
+#if __STDC_VERSION__ >= 202311L
+#define NORETURN [[noreturn]]
+#elif __STDC_VERSION__ >= 201112L
+#define NORETURN _Noreturn
+#else
+#define NORETURN
+#endif
+
+#ifdef __has_builtin
+#define HAS_BUILTIN(b) __has_builtin(__builtin_##b)
+#else
+#define HAS_BUILTIN(_) 0
+#endif
+
+#define static_assert(x) _Static_assert(x, #x)
+#define in_range(x, Lo, Hi) ((uint) (x) - (Lo) <= (Hi) - (Lo)) /* lo <= x <= hi; lo > 0, hi > 0 */
+#define alignup(x, A) (((x) + ((A) - 1)) & -(A))
+#define countof(a) (sizeof(a) / sizeof 0[a])
+
+enum { SPANFILEBITS = 10 };
+struct span {
+   struct span0 {
+      uint off;
+      uint len  : 32-SPANFILEBITS,
+           file : SPANFILEBITS;
+   } sl, /* original source location */
+     ex; /* the location after #include/macro expansion */
+};
+
+void _assertfmt(const char *file, int line, const char *func, const char *expr);
+#if HAS_BUILTIN(trap)
+#define assert(x) (!(x) ? _assertfmt(__FILE__,__LINE__,__func__,#x), __builtin_trap() : (void)0)
+#else
+#define assert(x) (void)(!(x) ? _assertfmt(__FILE__,__LINE__,__func__,#x), *(volatile int *)0 : 0)
+#endif
+
+static inline size_t
+hashs(size_t h, const char *s)
+{
+   while (*s) h = (uchar)*s++ + h*65599;
+   return h;
+}
+static inline size_t
+hashb(size_t h, const void *d, size_t n)
+{
+   const uchar *b = d;
+   while (n--) h = *b++ + h*65599;
+   return h;
+}
+static inline size_t
+ptrhash(const void *p) {
+   return (size_t)p * 2654435761u;
+}
+static inline uint
+popcnt(uvlong x) {
+#if HAS_BUILTIN(popcountll)
+   return x ? __builtin_popcountll(x) : 0;
+#else
+   uint n = 0;
+   while (x) n += x&1, x >>= 1;
+   return n;
+#endif
+}
+static inline bool
+ispo2(uvlong x) {
+   return (x != 0) & ((x & (x - 1)) == 0);
+}
+static inline uint
+ilog2(uvlong x) { /* assumes x is a power of 2 */
+#if HAS_BUILTIN(ctzll)
+   return __builtin_ctzll(x);
+#else
+   uint n = 0;
+   while (x >>= 1) ++n;
+   return n;
+#endif
+}
+static inline uint
+lowestsetbit(uvlong x)
+{
+#if HAS_BUILTIN(ctzll)
+   return __builtin_ctzll(x);
+#else
+   int i = 0;
+   for (uvlong mask = 1;; ++i, mask <<= 1)
+      if (x & mask)
+         break;
+   return i;
+#endif
+}
+
+#define aisprint(c) in_range(c, ' ', '~')
+#define aisdigit(c) in_range(c, '0', '9')
+#define aisodigit(c) in_range(c, '0', '7')
+#define aisalpha(c) in_range((c)|0x20, 'a', 'z')
+static inline bool aisspace(int c) { return c == ' ' || in_range(c, '\t', '\r'); }
+static inline bool aisxdigit(int c) { return aisdigit(c) || in_range(c|0x20, 'a', 'f'); }
+
+/******************/
+/* COMPILER STATE */
+/******************/
+
+enum cstd {
+   STDC89,
+   STDC99,
+   STDC11,
+   STDC23,
+};
+struct option {
+   enum cstd cstd;
+   bool pedant;
+   bool trigraph;
+   bool nocolor;
+   bool pie, pic;
+   bool werror;
+   bool wnone;
+   enum optz {
+      OPT0 = -1,
+      OPT1 = 1,
+      OPT2 = 2,
+   } o;
+   union {
+      struct {
+         bool p : 1, /* after parsing */
+              a : 1, /* after abi0 */
+              m : 1, /* after mem */
+              y : 1, /* after inline */
+              o : 1, /* after optimizations */
+              s : 1, /* after stack */
+              i : 1, /* after isel */
+              l : 1, /* after liveness fixup */
+              r : 1; /* after regalloc */
+      };
+      uint any;
+   } dbg;
+   struct wbuf *dbgout;
+};
+extern struct option ccopt;
+extern struct cinclpaths {
+   struct inclpath {
+      struct inclpath *next;
+      const char *path;
+   } *list, **tail;
+} cinclpaths[5];
+enum { /* GCC include directory search order: https://gcc.gnu.org/onlinedocs/gcc/Directory-Options.html#Options-for-Directory-Search */
+   CINCL_iquote,
+   CINCL_I,
+   CINCL_isystem,
+   CINCLsys,
+   CINCL_idirafter,
+};
+
+/**********/
+/* Target */
+/**********/
+
+struct targtriple {
+   enum mcarch { ISxxx, ISx86_64, ISaarch64 } arch;
+   enum mcos { OSunknown, OSlinux } os;
+   enum mcabi { ABInone, ABIgnu, ABImusl } abi;
+};
+extern const struct mctarg *mctarg;
+extern struct targtriple target;
+void targ_init(const char *);
+
+/*********/
+/** MEM **/
+/*********/
+
+/* libc *alloc wrappers */
+void *xmalloc(size_t n, const char *);
+void *xcalloc(size_t n, const char *);
+void *xrealloc(void *, size_t n, const char *);
+void free(void *);
+#define xmalloc(n) xmalloc(n, __func__)
+#define xcalloc(n) xcalloc(n, __func__)
+#define xrealloc(p,n) xrealloc(p, n, __func__)
+
+/* string interning */
+typedef const struct internstr {char c;} *internstr;
+internstr intern_(const char *, uint len);
+#define intern(s) intern_(s, 0)
+
+/* growable buffer that stores its capacity in the allocated memory */
+#define xbnew_(n) (void *)(1 + (size_t *)xcalloc(sizeof(size_t) + (n)))
+#define xbcap_(p) ((size_t *)(p))[-1]
+static inline void
+xbgrow_(void **p, size_t n)
+{
+   if (!n) return;
+   if (!*p) { *p = xbnew_(n); xbcap_(*p) = n; assert(n>0); }
+   else if (xbcap_(*p) < n) {
+      size_t k = xbcap_(*p);
+      assert(k > 0);
+      do k *= 2; while (k < n);
+      *p = 1 + (size_t *)xrealloc(&xbcap_(*(p)), sizeof(size_t) + k);
+      xbcap_(*p) = k;
+   };
+}
+#define xbgrow(p, n) xbgrow_((void **)(p), (n) * sizeof**(p))
+#define xbpush(p, n, x) (xbgrow(p, (*(n) + 1)), (*(p))[(*(n))++] = (x))
+#define xbfree(p) ((p) ? free(&xbcap_(p)) : (void)0)
+#define xbcap(p) ((p) ? xbcap_(p) / sizeof*(p) : 0)
+#define xbgrowz(p, n) do {                       \
+   size_t tmp = *(p) ? xbcap_(*(p)) : 0;         \
+   xbgrow(p, n);                                 \
+   memset((char*)*(p)+tmp, 0, xbcap_(*(p))-tmp); \
+} while (0)
+
+
+/** arenas **/
+struct arena {
+   uint cap : 31,
+        dyn : 1;
+   uint n;
+   struct arena *prev;
+   uchar mem[];
+};
+
+extern struct arena *globarena;
+
+struct arena *newarena(uint chunksiz);
+void *alloc(struct arena **, uint siz, uint align);
+void *allocz(struct arena **, uint siz, uint align);
+static inline void *
+alloccopy(struct arena **arena, const void *src, uint siz, uint align)
+{
+   if (!siz) return NULL;
+   return memcpy(alloc(arena, siz, align), src, siz);
+}
+void freearena(struct arena **);
+
+/** vec **/
+struct vecbase { void *p; uint n; uint cap : 31, dyn : 1; };
+#define vec_of(T) union {    \
+   struct { T *p; uint n; }; \
+   struct vecbase _vb;       \
+}
+void vinit_(struct vecbase *, void *inlbuf, uint cap, uint siz);
+void vpush_(struct vecbase *, uint siz);
+void *vpushn_(struct vecbase *, uint siz, const void *dat, uint ndat);
+void vresize_(struct vecbase *, uint siz, uint N);
+#define VINIT(inlbuf, Cap) { ._vb.p = (inlbuf), ._vb.cap = (Cap) }
+#define vfree(v) ((v)->_vb.dyn ? free((v)->p) : (void)0, memset((v), 0, sizeof*(v)))
+#define vinit(v, inlbuf, Cap) (vfree(v), vinit_(&(v)->_vb, inlbuf, (Cap), sizeof *(v)->p))
+#define vpush(v, x) (vpush_(&(v)->_vb, sizeof *(v)->p), (v)->p[(v)->n++] = (x))
+#define vpushn(v, xs, N) vpushn_(&(v)->_vb, sizeof *(v)->p, xs, N)
+#define vresize(v, N) vresize_(&(v)->_vb, sizeof *(v)->p, N)
+
+/** map of short -> T **/
+#define imap_of(T) struct { T *v; int tmp; struct imapbase mb; }
+struct imapbase { short *k; struct bitset *bs; uint n, N; };
+
+void imap_init_(struct imapbase *, void **v, uint vsiz, uint N);
+int imap_get_(struct imapbase *, short k);
+int imap_set_(struct imapbase *, void **v, uint vsiz, short k);
+#define imap_free(m) (free((m)->mb.k), memset((m), 0, sizeof *(m)))
+#define imap_init(m, N) (imap_free(m), imap_init_(&(m)->mb, (void **)&(m)->v, sizeof*(m)->v, (N)))
+#define imap_clear(m) ((m)->mb.bs ? bszero((m)->mb.bs, BSSIZE((m)->mb.N)) : (void)0, \
+                       (m)->mb.n = 0)
+#define imap_get(m, k) ((m)->tmp = imap_get_(&(m)->mb, k), (m)->tmp < 0 ? NULL : &(m)->v[(m)->tmp])
+#define imap_set(m, k, ...) ((m)->tmp = imap_set_(&(m)->mb, (void **)&(m)->v, sizeof*(m)->v, k), \
+                           (m)->v[(m)->tmp] = (__VA_ARGS__), &(m)->v[(m)->tmp])
+#define imap_each(m,kx,pvx) \
+   for (int _i = 0; _i < (m)->mb.N && ((kx) = (m)->mb.k[_i], (pvx) = &(m)->v[_i], 1); ++_i) \
+      if (bstest((m)->mb.bs, _i))
+#define imap_copy(dst,src) do {                                                       \
+   size_t N = (src)->mb.N;                                                            \
+   if (!N) break;                                                                     \
+   (dst)->mb.n = (src)->mb.n;                                                         \
+   imap_init((dst), N);                                                               \
+   memcpy((dst)->mb.k, (src)->mb.k,                                                   \
+         N*(sizeof*(src)->mb.k + sizeof*(src)->v) + BSSIZE(N)*sizeof(struct bitset)); \
+} while (0)
+
+
+/** map of non-null ptr -> T **/
+#define pmap_of(T) struct { T *v; int tmp; struct pmapbase mb; }
+struct pmapbase { void **k; uint n, N; };
+
+void pmap_init_(struct pmapbase *, void **v, uint vsiz, uint N);
+int pmap_get_(struct pmapbase *, const void *k);
+int pmap_set_(struct pmapbase *, void **v, uint vsiz, const void *k);
+void pmap_del_(struct pmapbase *, const void *k);
+extern char pmap_tombstone_[];
+#define pmap_free(m) (free((m)->mb.k), memset((m), 0, sizeof *(m)))
+#define pmap_init(m, N) (pmap_free(m), pmap_init_(&(m)->mb, (void **)&(m)->v, sizeof*(m)->v, (N)))
+#define pmap_get(m, k) (((m)->tmp = pmap_get_(&(m)->mb, k)) < 0 ? NULL : &(m)->v[(m)->tmp])
+#define pmap_set(m, k, x) ((m)->tmp = pmap_set_(&(m)->mb, (void **)&(m)->v, sizeof*(m)->v, k), \
+                           (m)->v[(m)->tmp] = (x))
+#define pmap_del(m, k) pmap_del_(&(m)->mb, k)
+#define pmap_each(m,kx,pvx) \
+   for (size_t _i = 0; _i < (m)->mb.N && ((kx) = (m)->mb.k[_i], (pvx) = &(m)->v[_i], 1); ++_i) \
+      if (kx && kx != pmap_tombstone_)
+
+/** bitset **/
+struct bitset { size_t u; };
+enum { BSNBIT = 8 * sizeof(struct bitset) };
+#define BSSIZE(nbit) ((nbit)/BSNBIT + ((nbit)%BSNBIT != 0))
+
+static inline bool
+bstest(const struct bitset *bs, uint i)
+{
+   return bs[i/BSNBIT].u >> i%BSNBIT & 1;
+}
+
+static inline void
+bsset(struct bitset *bs, uint i)
+{
+   bs[i/BSNBIT].u |= 1ull << i%BSNBIT;
+}
+
+static inline void
+bsclr(struct bitset *bs, uint i)
+{
+   bs[i/BSNBIT].u &= ~(1ull << i%BSNBIT);
+}
+
+static inline void
+bszero(struct bitset bs[/*siz*/], uint siz)
+{
+   memset(bs, 0, siz * sizeof *bs);
+}
+
+static inline void
+bscopy(struct bitset dst[/*siz*/], const struct bitset src[/*siz*/], uint siz)
+{
+   while (siz--) dst++->u = src++->u;
+}
+
+static inline void
+bsunion(struct bitset dst[/*siz*/], const struct bitset src[/*siz*/], uint siz)
+{
+   while (siz--) dst++->u |= src++->u;
+}
+
+static inline uint
+bscount(struct bitset bs[/*siz*/], uint siz)
+{
+   uint n = 0;
+   while (siz--) n += popcnt(bs++->u);
+   return n;
+}
+
+static inline bool
+bsiter(uint *i, struct bitset bs[/*siz*/], uint siz)
+{
+   uint k = *i/BSNBIT, j = *i%BSNBIT;
+   if (k >= siz) return 0;
+   size_t t = bs[k].u & ~(((size_t)1 << j) - 1);
+   while (!t) {
+      if (++k >= siz) return 0;
+      t = bs[k].u;
+   }
+   *i = k*BSNBIT + lowestsetbit(t);
+   return 1;
+}
+#define bs_each(T, var, bs, siz) for (T (var) = 0; bsiter(&(var), (bs), (siz)); ++(var))
+
+static inline bool
+bsiterzr(uint *i, struct bitset bs[/*siz*/], uint siz)
+{
+   uint k = *i/BSNBIT, j = *i%BSNBIT;
+   if (k >= siz) return 0;
+   size_t t = ~bs[k].u & ~(((size_t)1 << j) - 1);
+   while (!t) {
+      if (++k >= siz) return 0;
+      t = ~bs[k].u;
+   }
+   *i = k*BSNBIT + lowestsetbit(t);
+   return 1;
+}
+
+/********/
+/** IO **/
+/********/
+
+struct wbuf {
+   union {
+      struct {
+         char *buf;
+         uint cap;
+         uint len;
+         int fd;
+      };
+      void *fp;
+   };
+   bool err;
+   bool isfp;
+};
+
+/* read-only file mapping that is at least 1 page larger than the real file
+ * so it's legal to read a few bytes beyond it to avoid some bounds checks */
+struct memfile {
+   const uchar *p;
+   uint n;
+   bool statik;
+};
+
+struct embedfile {
+   const char *name;
+   const char *s;
+   size_t len;
+};
+
+#define MEMBUF(buf_, cap_) { .buf = (buf_), .cap = (cap_), .fd = -1 }
+#define FDBUF(buf_, cap_, fd_)  { .buf = (buf_), .cap = (cap_), .fd = (fd_) }
+extern struct wbuf bstdout, bstderr;
+void ioinit(void);
+void iowrite(struct wbuf *, const void *src, int n);
+void ioputc(struct wbuf *, uchar);
+void ioflush(struct wbuf *);
+int vbfmt(struct wbuf *, const char *, va_list ap);
+int bfmt(struct wbuf *, const char *, ...);
+#define pfmt(...) bfmt(&bstdout, __VA_ARGS__)
+#define efmt(...) bfmt(&bstderr, __VA_ARGS__)
+struct memfile mapopen(const char **err, const char *path);
+void mapclose(struct memfile *);
+void *mapzeros(uint);
+int munmap(void *, size_t);
+int getpredeffile(struct memfile **, const char *name);
+int openfile(const char **err, struct memfile **, const char *path);
+const char *getfilename(int id, uint atoff);
+struct memfile *getfile(int id);
+void addfileline(int id, uint off);
+void setfileline(int id, uint off, int line, const char *file);
+const char *getfilepos(int *line, int *col, int id, uint off);
+bool isoncefile(int id, internstr *guard);
+void markfileonce(int id, internstr guard);
+void markfileseen(int id);
+bool isfileseen(int id);
+void closefile(int id);
+
+enum diagkind { DGERROR, DGWARN, DGNOTE, };
+void vdiag(const struct span *, enum diagkind, const char *, va_list);
+NORETURN void fatal(const struct span *, const char *, ...);
+void error(const struct span *, const char *, ...);
+void warn(const struct span *, const char *, ...);
+void note(const struct span *, const char *, ...);
+ushort *utf8to16(uint *ulen, struct arena **, const uchar *s, size_t len);
+uint *utf8to32(uint *ulen, struct arena **, const uchar *s, size_t len);
+int utf8enc(char out[4], uint cp);
+
+#endif /* COMMON_H_ */
+
+/* vim:set ts=3 sw=3 expandtab: */