add show trait

1 files changed, 13 insertions, 0 deletions

diff --git a/src/vec.h b/src/vec.h
index ba235e1..9d32136 100644
--- a/src/vec.h
+++ b/src/vec.h
@@ -2,6 +2,7 @@
 #define ALGDS_VEC_H_
 
 #include <stdlib.h>
+#include <stdio.h>
 
 #include "type_alias.h"
 
@@ -23,6 +24,7 @@
     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);
 
 #define VECTOR_IMPL(T) \
@@ -81,6 +83,17 @@
         self->cap = 0; \
         return dup; \
     } \
+    void T##Vector_show(T##Vector *self, FILE* fp) { \
+        fprintf(fp, "["); \
+        for (int i = 0; i < self->size-1; i++) { \
+            T##_show(self->buffer[i], fp); \
+            fprintf(fp, ", "); \
+        } \
+        if (self->size > 1) { \
+            T##_show(self->buffer[self->size - 1], fp); \
+        } \
+        fprintf(fp, "]"); \
+    } \
     void T##Vector_free(T##Vector *self) { free(self->buffer); }
 
 VECTOR_DEF(Int);