initial import of the C runtime

src/runtime/c/gu/str.h

@@ -0,0 +1,29 @@
+#ifndef GU_STR_H_
+#define GU_STR_H_
+
+#include <gu/mem.h>
+#include <gu/hash.h>
+
+extern const char gu_empty_str[];
+extern const char* const gu_null_str;
+
+typedef const char* GuStr;
+
+char* gu_new_str(size_t size, GuPool* pool);
+
+char* gu_strdup(const char* str, GuPool* pool);
+
+bool
+gu_str_eq(GuStr s1, GuStr s2);
+
+extern GuHasher gu_str_hasher[1];
+
+#include <gu/type.h>
+
+extern GU_DECLARE_TYPE(GuStr, repr);
+
+char* gu_vasprintf(const char* fmt, va_list args, GuPool* pool);
+
+char* gu_asprintf(GuPool* pool, const char* fmt, ...);
+
+#endif // GU_STR_H_