string handling

1 files changed, 56 insertions, 0 deletions

diff --git a/src/common.cc b/src/common.cc
new file mode 100644
index 0000000..2099e24
--- /dev/null
+++ b/src/common.cc
@@ -0,0 +1,56 @@
+#ifndef COMMON_CC
+#define COMMON_CC
+
+#include <cstdint>
+
+/* typedefs for common types */
+
+typedef uint8_t u8;
+typedef uint16_t u16;
+typedef uint32_t u32;
+typedef uint64_t u64;
+
+typedef int8_t i8;
+typedef int16_t i16;
+typedef int32_t i32;
+typedef int64_t i64;
+
+typedef uintptr_t usize;
+typedef intptr_t isize;
+
+/* slice and string handling */
+
+template<typename T>
+struct Slice {
+  T* ptr;
+  usize length;
+
+  slice(T* ptr, usize length) : ptr(ptr), length(length) {}
+
+  T* operator[](usize index) {
+    return ptr + index;
+  }
+};
+
+typedef Slice<u8> String;
+
+/* allocator handling */
+
+typedef u8* (*Allocator_Allocate)(u8* self, usize length, usize align);
+typedef void (*Allocator_Deallocate)(u8* self, u8* ptr);
+
+struct Allocator {
+  u8* self;
+  Allocator_Allocate allocate;
+  Allocator_Deallocate deallocate;
+};
+
+u8* allocate(Allocator* allocator, usize size, usize align) {
+  return allocator->allocate(allocator->self, size, align);
+}
+
+void deallocate(Allocator* allocator, u8* ptr) {
+  allocator->deallocate(allocator->self, ptr);
+}
+
+#endif