add functions to bytecode and continuing working on runtime objects

src/parser/function/function.c

@@ -0,0 +1,25 @@
+#include "function.h"
+#include "../../memory.h"
+#include <stdlib.h>
+#include <string.h>
+
+ParsedValue *create_parsed_function(char *name, DArray parameters,
+                                  ParsedValue *body) {
+  ParsedValue *parsedValue = checked_malloc(sizeof(ParsedValue));
+  parsedValue->type=AST_FUNCTION;
+  ParsedFunction *parsedFunction = checked_malloc(sizeof(ParsedFunction));
+  parsedValue->data=parsedFunction;
+  parsedFunction->name=strcpy(checked_malloc(strlen(name) + 1), name);
+  parsedFunction->body = body;
+  parsedFunction->parameters=parameters;
+  return parsedValue;
+}
+
+void free_function(void *ptr) {
+  ParsedValue *parsedValue = ptr;
+  ParsedFunction *parsed = parsedValue->data;
+  free_parsed(parsed->body);
+  free(parsed->name);
+  darray_free(&parsed->parameters, NULL);
+  free(parsed);
+}

src/parser/function/function.h

@@ -0,0 +1,17 @@
+#ifndef FUNCTION_H
+#define FUNCTION_H
+#include "../../lexer/token.h" // for Token
+#include "../parser.h"
+
+typedef struct {
+  char * name;
+  DArray parameters;
+  ParsedValue *body;
+} ParsedFunction;
+
+ParsedValue *create_parsed_function(char *name, DArray parameters,
+                                  ParsedValue *body);
+
+void free_function(void *ptr);
+
+#endif // FUNCTION_H