move M to its own file

6 files changed, 31 insertions, 19 deletions

diff --git a/Makefile b/Makefile
index 696587b..8d9c882 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
-CS=ast.c com.c dis.c prs.c read.c val.c vm.c
-HS=ast.h       dis.h prs.h read.h val.h vm.h
+CS=ast.c com.c dis.c mem.c prs.c read.c val.c vm.c
+HS=ast.h       dis.h mem.h prs.h read.h val.h vm.h
 CFLAGS=-O3 -Wall -Wpedantic -Werror=implicit-function-declaration
 
 bþ: $(CS) $(HS)
diff --git a/mem.c b/mem.c
new file mode 100644
index 0000000..6e0bc1b
--- /dev/null
+++ b/mem.c
@@ -0,0 +1,18 @@
+#include "mem.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+
+void *M(void *p, size_t sz) {
+	if (sz == 0) {
+		free(p);
+		return NULL;
+	} else {
+		void *x = realloc(p, sz);
+		if (x == NULL) {
+			printf("out of memory! aaaaaaa!!!!!\n");
+			exit(42);
+		}
+		return x;
+	}
+}
diff --git a/mem.h b/mem.h
new file mode 100644
index 0000000..8f66fed
--- /dev/null
+++ b/mem.h
@@ -0,0 +1,8 @@
+#ifndef _mem_h
+#define _mem_h
+
+#include <stddef.h>
+
+void *M(void *p, size_t sz);
+
+#endif
diff --git a/val.c b/val.c
index cd76595..c1b83c3 100644
--- a/val.c
+++ b/val.c
@@ -1,7 +1,8 @@
 #include <stdio.h>
 #include <string.h>
 #include "val.h"
-#include "vm.h"
+#include "mem.h"
+
 
 ObjString *objstring_new(char *src, size_t len) {
 	char *d = M(NULL, (1 + len) * sizeof (char));
diff --git a/vm.c b/vm.c
index c420774..a9610d2 100644
--- a/vm.c
+++ b/vm.c
@@ -6,22 +6,9 @@
 
 #include "val.h"
 #include "vm.h"
+#include "mem.h"
 #include "dis.h"
 
-void *M(void *p, size_t sz) {
-	if (sz == 0) {
-		free(p);
-		return NULL;
-	} else {
-		void *x = realloc(p, sz);
-		if (x == NULL) {
-			printf("out of memory! aaaaaaa!!!!!\n");
-			exit(42);
-		}
-		return x;
-	}
-}
-
 
 Chunk chunk_new() {
 	return (Chunk){
diff --git a/vm.h b/vm.h
index c710a4b..9a17f77 100644
--- a/vm.h
+++ b/vm.h
@@ -7,8 +7,6 @@
 
 #include "val.h"
 
-void *M(void *p, size_t sz);
-
 typedef struct {
 	// bytecode
 	size_t blen;