Rewrite and redesign codegen and feature system

Also switch to somewhat proper C23 flags while we're at it.

This is a huge change. It took me forever, in between being really busy.
Sorry about that. But the good news is I'm now free to start integrating
the various patches that have accumulated since last release. Well, at
least in between still being really busy. Gotta manage expectations.

The main benefit of introducing GAMESPECIFIC() is that features
that don't apply to a particular game no longer show up *at all*, and
less time is wasted on init. It also enables a cool optimisation wherein
unnecessary REQUIRE_GAMEDATA() checks can elided at compile time
whenever the gamedata is known up-front to always exist in supported
games.

The DEF_FEAT_CVAR macro family meanwhile makes it easier to manage the
lifecycle of cvars/ccmds, with less manual registering, unhiding and
such.

Originally I was going to try and just hack these features into the
existing codegen abomination, but it just got too terrible. This rewrite
should make it easier to continue tweaking codegen behaviour in future.
It also has slightly better error messages.

1 files changed, 0 insertions, 95 deletions

diff --git a/src/build/vec.h b/src/build/vec.h
deleted file mode 100644
index 6dfa645..0000000
--- a/src/build/vec.h
+++ /dev/null
@@ -1,95 +0,0 @@
-/* This file is dedicated to the public domain. */
-
-#ifndef INC_VEC_H
-#define INC_VEC_H
-
-#include <errno.h>
-#include <stdlib.h>
-
-#include "../intdefs.h"
-
-struct _vec {
-	uint sz;
-	uint max;
-	void *data;
-};
-
-/*
- * A dynamic array with push, pop and concatenate operations.
- *
- * Usage: struct VEC(my_type) myvec = {0};
- * Or: struct myvec VEC(my_type);
- * Or: typedef struct VEC(my_type) myvec;
- */
-#define VEC(type) { \
-	uint sz; \
-	uint max; \
-	type *data; \
-}
-
-#if defined(__GNUC__) || defined(__clang__)
-__attribute__((unused)) // heck off gcc
-#endif
-static bool _vec_ensure(struct _vec *v, uint tsize, uint newmax) {
-	// FIXME: potential overflow at least on 32-bit hosts (if any!?).
-	// should use reallocarray or something but didn't feel like porting right
-	// now. consider doing later.
-	void *new = realloc(v->data, tsize * newmax);
-	if (new) { v->data = new; v->max = newmax; }
-	return !!new;
-}
-
-#if defined(__GNUC__) || defined(__clang__)
-__attribute__((unused)) // heck off gcc 2
-#endif
-static bool _vec_make_room(struct _vec *v, uint tsize, uint addcnt) {
-	// this overflow check is probably unnecessary, but just in case
-	u64 chk = v->max + addcnt;
-	if (chk > 1u << 30) { errno = ENOMEM; return false; }
-	u32 x = chk;
-	if (x < 16) {
-		x = 16;
-	}
-	else {
-		// round up to next 2*n
-		--x;
-		x |= x >> 1; x |= x >> 2; x |= x >> 4; x |= x >> 8; x |= x >> 16;
-		x++;
-	}
-	return _vec_ensure(v, tsize, x);
-}
-
-// internal: for reuse by vec0
-#define _vec_push(v, val, slack) ( \
-	((v)->sz + (slack) < (v)->max || \
-			_vec_make_room((struct _vec *)(v), sizeof(val), 1)) && /*NOLINT*/ \
-	((v)->data[(v)->sz++ - slack] = (val), true) \
-)
-
-#define _vec_pushall(v, vals, n, slack) ( \
-	((v)->sz + (n) + (slack) <= (v)->max || \
-			_vec_make_room((struct _vec *)(v), sizeof(*(vals)), (n))) && \
-	(memcpy((v)->data + (v)->sz - (slack), (vals), (n) * sizeof(*(vals))), \
-			(v)->sz += (n), true) \
-)
-
-/*
- * Appends an item to the end of a vector. Gives true on success and false if
- * memory allocation fails.
- */
-#define vec_push(v, val) _vec_push(v, val, 0)
-
-/*
- * Appends n items from an array to the end of a vector. Gives true on success
- * and false if memory allocation fails.
- */
-#define vec_pushall(v, vals, n) _vec_pushall(v, vals, n, 0)
-
-/*
- * Removes an item from the end of a vector and gives that item.
- */
-#define vec_pop(v) ((v)->data[--(v)->sz])
-
-#endif
-
-// vi: sw=4 ts=4 noet tw=80 cc=80