boilerplate hopefully down

src/type.h

@@ -0,0 +1,41 @@
+#ifndef __GRAVITY__TYPE_H
+#define __GRAVITY__TYPE_H
+
+#include "list.h"
+#include <stddef.h>
+#include <stdint.h>
+#include <stdbool.h>
+
+typedef struct GravityOpaqueType* GravityType;
+
+typedef enum {
+    GravityIntTypeKind = 0,
+    GravityFloatTypeKind,
+    GravityPointerTypeKind,
+    GravityFunctionTypeKind,
+} GravityTypeKind;
+
+typedef struct {
+    GravityType* argTypes;
+    size_t numArgs;
+    GravityType returnType;
+} GravityFunctionType;
+
+typedef struct {
+    uint8_t width;
+    bool isSigned;
+} GravityIntType;
+
+struct GravityOpaqueType {
+    GravityTypeKind typeKind;
+    union {
+        GravityFunctionType function;
+        GravityIntType integer;
+    };
+};
+
+GravityType gravityCreateFunctionType(int numArgs, GravityType* argTypes, GravityType returnType);
+GravityType gravityCreateIntegerType(uint8_t width, bool isSigned);
+GravityType gravityCreateType(void);
+
+#endif