Start work on structs and objects

src/types.h

@@ -6,13 +6,14 @@
 #include <stdint.h>
 #include <stdbool.h>
 #include <string.h>
+#include "include/uthash.h"
 
 typedef enum GroundInstType {
     IF, JUMP, END, INPUT, PRINT, PRINTLN, SET, GETTYPE, EXISTS, SETLIST, SETLISTAT, GETLISTAT, GETLISTSIZE, LISTAPPEND, GETSTRSIZE, GETSTRCHARAT, ADD, SUBTRACT, MULTIPLY, DIVIDE, EQUAL, INEQUAL, NOT, GREATER, LESSER, STOI, STOD, TOSTRING, FUN, RETURN, ENDFUN, PUSHARG, CALL, STRUCT, ENDSTRUCT, INIT, USE, EXTERN, CREATELABEL, PAUSE, DROP
 } GroundInstType;
 
 typedef enum GroundValueType {
-    INT, DOUBLE, STRING, CHAR, BOOL, LIST, FUNCTION, CUSTOM, NONE
+    INT, DOUBLE, STRING, CHAR, BOOL, LIST, FUNCTION, STRUCTVAL, CUSTOM, NONE
 } GroundValueType;
 
 typedef enum GroundArgType {
@@ -26,6 +27,8 @@ typedef enum ListAccessStatus {
 struct GroundValue;
 struct GroundFunction;
 struct GroundScope;
+struct GroundStruct;
+struct GroundObject;
 
 struct List;
 
@@ -55,7 +58,8 @@ typedef struct GroundValue {
         bool boolVal;
         List listVal;
         struct GroundFunction* fnVal;
-        void* customVal;
+        struct GroundStruct* structVal;
+        struct GroundObject* customVal;
     } data;
 } GroundValue;
 
@@ -129,6 +133,38 @@ typedef struct GroundFunction {
     NativeGroundFunction nativeFn;
 } GroundFunction;
 
+/*
+ * Field for a GroundStruct
+ */
+typedef struct GroundStructField {
+    char id[64];
+    GroundValue value;
+    UT_hash_handle hh;
+} GroundStructField;
+
+/*
+ * Represents a Ground struct.
+ */
+typedef struct GroundStruct {
+    GroundStructField* fields;
+    size_t size;
+} GroundStruct;
+
+/*
+ * Field for a GroundObject
+ */
+typedef struct GroundObjectField {
+    char id[64];
+    GroundValue value;
+    UT_hash_handle hh;
+} GroundObjectField;
+
+/*
+ * Represents an initialised Ground struct.
+ */
+typedef struct GroundObject {
+    GroundObjectField* fields;
+} GroundObject;
 
 // Creates a GroundValue containing (in), with type INT.
 GroundValue createIntGroundValue(int64_t in);
@@ -203,4 +239,22 @@ ListAccess getListAt(List* list, int idx);
 // Sets an item in list (list) at index (idx) to GroundValue (value).
 ListAccessStatus setListAt(List* list, int idx, GroundValue value);
 
+// Creates a Ground struct
+GroundStruct createStruct();
+
+// Adds a field (field) to Ground struct (gstruct)
+void addFieldToStruct(GroundStruct* gstruct, char* name, GroundValue field);
+
+// Frees a Ground struct
+void freeGroundStruct(GroundStruct* gstruct);
+
+// Creates a Ground object from GroundStruct (gstruct)
+GroundObject createObject(GroundStruct gstruct);
+
+// Finds a field in an object for modification or copying out.
+GroundObjectField* findField(GroundObject head, const char *id);
+
+// Frees a GroundObject
+void freeGroundObject(GroundObject* object);
+
 #endif