Move stdlib into src/

1 files changed, 86 insertions, 0 deletions

diff --git a/src/stdlib/c_strings.c b/src/stdlib/c_strings.c
new file mode 100644
index 00000000..7987a234
--- /dev/null
+++ b/src/stdlib/c_strings.c
@@ -0,0 +1,86 @@
+// Type info and methods for CString datatype (char*)
+#include <ctype.h>
+#include <err.h>
+#include <gc.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "text.h"
+#include "siphash.h"
+#include "util.h"
+
+public Text_t CString$as_text(const void *c_string, bool colorize, const TypeInfo_t *info)
+{
+    (void)info;
+    if (!c_string) return Text("CString");
+    Text_t text = Text$from_str(*(const char**)c_string);
+    return Text$concat(colorize ? Text("\x1b[34mCString\x1b[m(") : Text("CString("), Text$quoted(text, colorize), Text(")"));
+}
+
+public Text_t CString$as_text_simple(const char *str)
+{
+    return Text$format("%s", str);
+}
+
+PUREFUNC public int32_t CString$compare(const void *x, const void *y, const TypeInfo_t*)
+{
+    if (x == y)
+        return 0;
+
+    if (!*(const char**)x != !*(const char**)y)
+        return (!*(const char**)y) - (!*(const char**)x);
+
+    return strcmp(*(const char**)x, *(const char**)y);
+}
+
+PUREFUNC public bool CString$equal(const void *x, const void *y, const TypeInfo_t *type)
+{
+    return CString$compare(x, y, type) == 0;
+}
+
+PUREFUNC public uint64_t CString$hash(const void *c_str, const TypeInfo_t*)
+{
+    if (!*(const char**)c_str) return 0;
+    return siphash24(*(void**)c_str, strlen(*(const char**)c_str));
+}
+
+PUREFUNC public bool CString$is_none(const void *c_str, const TypeInfo_t*)
+{
+    return *(const char**)c_str == NULL;
+}
+
+static void CString$serialize(const void *obj, FILE *out, Table_t *pointers, const TypeInfo_t*)
+{
+    const char *str = *(const char **)obj;
+    int64_t len = (int64_t)strlen(str);
+    Int64$serialize(&len, out, pointers, &Int64$info);
+    fwrite(str, sizeof(char), (size_t)len, out);
+}
+
+static void CString$deserialize(FILE *in, void *out, Array_t *pointers, const TypeInfo_t *)
+{
+    int64_t len = -1;
+    Int64$deserialize(in, &len, pointers, &Int64$info);
+    char *str = GC_MALLOC_ATOMIC((size_t)len+1);
+    fread(str, sizeof(char), (size_t)len, in);
+    str[len+1] = '\0';
+    *(const char**)out = str;
+}
+
+public const TypeInfo_t CString$info = {
+    .size=sizeof(const char*),
+    .align=__alignof__(const char*),
+    .metamethods={
+        .hash=CString$hash,
+        .compare=CString$compare,
+        .equal=CString$equal,
+        .as_text=CString$as_text,
+        .is_none=CString$is_none,
+        .serialize=CString$serialize,
+        .deserialize=CString$deserialize,
+    },
+};
+
+// vim: ts=4 sw=0 et cino=L2,l1,(0,W4,m1,\:0