From 6a299d9e7d9c3353394790b8048284a984fdfdc6 Mon Sep 17 00:00:00 2001
From: Mistivia <i@mistivia.com>
Date: Sun, 28 Dec 2025 19:57:33 +0800
Subject: def as and impl as

---
 pqueue.h | 80 ++++++++++++++++++++++++++++++++++------------------------------
 vec.h    | 80 ++++++++++++++++++++++++++++++++++------------------------------
 2 files changed, 84 insertions(+), 76 deletions(-)

diff --git a/pqueue.h b/pqueue.h
index b9b683d..94ef0fc 100644
--- a/pqueue.h
+++ b/pqueue.h
@@ -3,17 +3,19 @@
 
 #include "vec.h"
 
-#define PQUEUE_DEF(T) \
+#define PQUEUE_DEF_AS(T, TV, A) \
     typedef struct { \
-        T##Vector vec; \
-    } T##PQueue; \
-    void T##PQueue_init(T##PQueue *self); \
-    T##PQueue T##PQueue_create(); \
-    void T##PQueue_push(T##PQueue *self, T elem); \
-    void T##PQueue_pop(T##PQueue *self); \
-    T* T##PQueue_top(T##PQueue *self); \
-    T##PQueue T##PQueue_move(T##PQueue *self); \
-    void T##PQueue_free(T##PQueue *self); \
+        TV vec; \
+    } A; \
+    void A##_init(A *self); \
+    A A##_create(); \
+    void A##_push(A *self, T elem); \
+    void A##_pop(A *self); \
+    T* A##_top(A *self); \
+    A A##_move(A *self); \
+    void A##_free(A *self);
+
+#define PQUEUE_DEF(T) PQUEUE_DEF_AS(T, T##Vector, T##PQueue)
 
 PQUEUE_DEF(Int);
 PQUEUE_DEF(Bool);
@@ -26,60 +28,62 @@ PQUEUE_DEF(Float);
 PQUEUE_DEF(String);
 PQUEUE_DEF(VoidPtr);
 
-#define PQUEUE_IMPL(T) \
-    static int T##PQueue_cmp(T##PQueue *self, int a, int b) { \
-        return T##_cmp(*T##Vector_ref(&self->vec, a), *T##Vector_ref(&self->vec, b)); \
+#define PQUEUE_IMPL_AS(T, TV, A) \
+    static int A##_cmp(A *self, int a, int b) { \
+        return T##_cmp(*TV##_ref(&self->vec, a), *TV##_ref(&self->vec, b)); \
     } \
-    void T##PQueue_init(T##PQueue *self) { \
-         T##Vector_init(&self->vec); \
+    void A##_init(A *self) { \
+         TV##_init(&self->vec); \
     } \
-    T##PQueue T##PQueue_create() { \
-        T##PQueue self; \
-        T##PQueue_init(&self); \
+    A A##_create() { \
+        A self; \
+        A##_init(&self); \
         return self; \
     } \
-    void T##PQueue_push(T##PQueue *self, T elem) { \
-        T##Vector_push_back(&self->vec, elem); \
+    void A##_push(A *self, T elem) { \
+        TV##_push_back(&self->vec, elem); \
         int i = self->vec.size - 1; \
-        while (i > 0 && T##PQueue_cmp(self, i, i / 2) > 0) { \
-            T##Vector_swap(&self->vec, i, i / 2); \
+        while (i > 0 && A##_cmp(self, i, i / 2) > 0) { \
+            TV##_swap(&self->vec, i, i / 2); \
             i /= 2; \
         } \
     } \
-    static void T##PQueue_heapify(T##PQueue *self, int idx) { \
+    static void A##_heapify(A *self, int idx) { \
         int left, right, largest; \
         left = 2 * idx + 1; \
         right = 2 * idx + 2; \
-        if (left < self->vec.size && T##PQueue_cmp(self, left, idx) > 0) { \
+        if (left < self->vec.size && A##_cmp(self, left, idx) > 0) { \
             largest = left; \
         } else { \
             largest = idx; \
         } \
-        if (right < self->vec.size && T##PQueue_cmp(self, right, largest) > 0) { \
+        if (right < self->vec.size && A##_cmp(self, right, largest) > 0) { \
             largest = right; \
         } \
         if (largest != idx) { \
-            T##Vector_swap(&self->vec, largest, idx); \
-            T##PQueue_heapify(self, largest); \
+            TV##_swap(&self->vec, largest, idx); \
+            A##_heapify(self, largest); \
         } \
     } \
-    void T##PQueue_pop(T##PQueue *self) { \
+    void A##_pop(A *self) { \
         if (self->vec.size == 0) return; \
-        memcpy(T##Vector_ref(&self->vec, 0), T##Vector_ref(&self->vec, self->vec.size - 1), sizeof(T)); \
-        T##Vector_pop(&self->vec); \
-        T##PQueue_heapify(self, 0); \
+        memcpy(TV##_ref(&self->vec, 0), TV##_ref(&self->vec, self->vec.size - 1), sizeof(T)); \
+        TV##_pop(&self->vec); \
+        A##_heapify(self, 0); \
     } \
-    T* T##PQueue_top(T##PQueue *self) { \
+    T* A##_top(A *self) { \
         if (self->vec.size == 0) return NULL; \
         return self->vec.buffer; \
     } \
-    T##PQueue T##PQueue_move(T##PQueue *self) { \
-        T##PQueue dup; \
-        dup.vec = T##Vector_move(&self->vec); \
+    A A##_move(A *self) { \
+        A dup; \
+        dup.vec = TV##_move(&self->vec); \
         return dup; \
     } \
-    void T##PQueue_free(T##PQueue *self) { \
-        T##Vector_free(&self->vec); \
-    } \
+    void A##_free(A *self) { \
+        TV##_free(&self->vec); \
+    }
+
+#define PQUEUE_IMPL(T) PQUEUE_IMPL_AS(T, T##Vector, T##PQueue)
 
 #endif
diff --git a/vec.h b/vec.h
index e040936..3273774 100644
--- a/vec.h
+++ b/vec.h
@@ -7,42 +7,44 @@
 
 #include "type_alias.h"
 
-#define VECTOR_DEF(T) \
+#define VECTOR_DEF_AS(T, A) \
     typedef struct { \
         T* buffer; \
         int size; \
         int cap; \
-    } T##Vector; \
+    } A; \
     \
-    void T##Vector_init(T##Vector *self); \
-    T##Vector T##Vector_create(); \
-    void T##Vector_push_back(T##Vector *self, T elem); \
-    void T##Vector_insert_before(T##Vector *self, int n, T elem); \
-    void T##Vector_pop(T##Vector *self); \
-    bool T##Vector_empty(T##Vector *self); \
-    void T##Vector_remove(T##Vector *self, size_t n); \
-    size_t T##Vector_len(T##Vector *self); \
-    T* T##Vector_begin(T##Vector *self); \
-    T* T##Vector_last(T##Vector *self); \
-    T* T##Vector_end(T##Vector *self); \
-    T* T##Vector_ref(T##Vector *self, size_t n); \
-    void T##Vector_swap(T##Vector *self, int i, int j); \
-    T##Vector T##Vector_move(T##Vector *self); \
-    void T##Vector_show(T##Vector self, FILE* fp); \
-    void T##Vector_free(T##Vector *self);
+    void A##_init(A *self); \
+    A A##_create(); \
+    void A##_push_back(A *self, T elem); \
+    void A##_insert_before(A *self, int n, T elem); \
+    void A##_pop(A *self); \
+    bool A##_empty(A *self); \
+    void A##_remove(A *self, size_t n); \
+    size_t A##_len(A *self); \
+    T* A##_begin(A *self); \
+    T* A##_last(A *self); \
+    T* A##_end(A *self); \
+    T* A##_ref(A *self, size_t n); \
+    void A##_swap(A *self, int i, int j); \
+    A A##_move(A *self); \
+    void A##_show(A self, FILE* fp); \
+    void A##_free(A *self);
 
-#define VECTOR_IMPL(T) \
-    void T##Vector_init(T##Vector *self) { \
+#define VECTOR_DEF(T) VECTOR_DEF_AS(T, T##Vector)
+
+#define VECTOR_IMPL_AS(T, A) \
+    void A##_init(A *self) { \
         self->buffer = (T*)malloc(sizeof(T) * 16); \
         self->cap = 16; \
         self->size = 0; \
     } \
-    T##Vector T##Vector_create() { \
-        T##Vector self; \
-        T##Vector_init(&self); \
+    A A##_create() { \
+        A self; \
+        A##_init(&self); \
         return self; \
     } \
-    void T##Vector_push_back(T##Vector *self, T elem) { \
+    void A##_push_back(A *self, T elem) { \
         if (self->size + 1 > self->cap) { \
             self->buffer = realloc(self->buffer, sizeof(T) * self->cap * 2); \
             self->cap *= 2; \
@@ -50,7 +52,7 @@
         self->buffer[self->size] = elem; \
         self->size += 1; \
     } \
-    void T##Vector_insert_before(T##Vector *self, int n, T elem) { \
+    void A##_insert_before(A *self, int n, T elem) { \
         if (n < 0 || n > self->size) { \
             return; \
         } \
@@ -66,35 +68,35 @@
             self->size += 1; \
         } \
     } \
-    void T##Vector_pop(T##Vector *self) { \
+    void A##_pop(A *self) { \
         self->size -= 1; \
     } \
-    void T##Vector_remove(T##Vector *self, size_t n) { \
+    void A##_remove(A *self, size_t n) { \
         if (n < 0 || n >= self->size) return; \
         memmove(self->buffer + n, \
                 self->buffer + n + 1, \
                 sizeof(T) * self->size - n - 1); \
         self->size -= 1; \
     } \
-    T* T##Vector_begin(T##Vector *self) { return self->buffer; } \
-    bool T##Vector_empty(T##Vector *self) { return self->size == 0; } \
-    T* T##Vector_end(T##Vector *self) { return self->buffer + self->size; } \
-    T* T##Vector_last(T##Vector *self) { return self->buffer + self->size - 1; } \
-    T* T##Vector_ref(T##Vector *self, size_t n) { return self->buffer + n; } \
-    void T##Vector_swap(T##Vector *self, int i, int j) { \
+    T* A##_begin(A *self) { return self->buffer; } \
+    bool A##_empty(A *self) { return self->size == 0; } \
+    T* A##_end(A *self) { return self->buffer + self->size; } \
+    T* A##_last(A *self) { return self->buffer + self->size - 1; } \
+    T* A##_ref(A *self, size_t n) { return self->buffer + n; } \
+    void A##_swap(A *self, int i, int j) { \
         T buf; \
         memcpy(&buf, self->buffer + i, sizeof(T)); \
         memcpy(self->buffer + i, self->buffer + j, sizeof(T)); \
         memcpy(self->buffer + j, &buf, sizeof(T)); \
     } \
-    T##Vector T##Vector_move(T##Vector *self) { \
-        T##Vector dup = *self; \
+    A A##_move(A *self) { \
+        A dup = *self; \
         self->buffer = NULL; \
         self->size = 0; \
         self->cap = 0; \
         return dup; \
     } \
-    void T##Vector_show(T##Vector self, FILE* fp) { \
+    void A##_show(A self, FILE* fp) { \
         fprintf(fp, "["); \
         for (int i = 0; i < self.size-1; i++) { \
             T##_show(self.buffer[i], fp); \
@@ -105,8 +107,10 @@
         } \
         fprintf(fp, "]"); \
     } \
-    size_t T##Vector_len(T##Vector *self) { return self->size; } \
-    void T##Vector_free(T##Vector *self) { free(self->buffer); }
+    size_t A##_len(A *self) { return self->size; } \
+    void A##_free(A *self) { free(self->buffer); }
+
+#define VECTOR_IMPL(T) VECTOR_IMPL_AS(T, T##Vector)
 
 VECTOR_DEF(Int);
 VECTOR_DEF(Bool);
-- 
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