Got hooks working

repl/lib_standard.c

@@ -0,0 +1,99 @@
+#include "lib_standard.h"
+
+#include "memory.h"
+
+#include <time.h>
+
+static int nativeClock(Interpreter* interpreter, LiteralArray* arguments) {
+	//no arguments
+	if (arguments->count != 0) {
+		interpreter->errorOutput("Incorrect number of arguments to clock\n");
+		return -1;
+	}
+
+	//get the time from C (what a pain)
+	time_t rawtime = time(NULL);
+	struct tm* timeinfo = localtime( &rawtime );
+	char* timestr = asctime(timeinfo);
+
+	//push to the stack
+	int len = strlen(timestr) - 1; //-1 for the newline
+	Literal timeLiteral = TO_STRING_LITERAL(copyString(timestr, len), len);
+
+	//push to the stack
+	pushLiteralArray(&interpreter->stack, timeLiteral);
+
+	//cleanup
+	freeLiteral(timeLiteral);
+
+	return 1;
+}
+
+//call the hook
+typedef struct Natives {
+	char* name;
+	NativeFn fn;
+} Natives;
+
+int hookStandard(Interpreter* interpreter, Literal identifier, Literal alias) {
+	//build the natives list
+	Natives natives[] = {
+		{"clock", nativeClock},
+		{NULL, NULL}
+	};
+
+	/* TODO: too exhuasted to fix this right now
+	//store the library in an aliased dictionary
+	if (!IS_NULL(alias)) {
+		//get the alias as a string
+		Literal dictName = TO_STRING_LITERAL( copyString(AS_IDENTIFIER(alias), alias.as.identifier.length), alias.as.identifier.length );
+
+		//make sure the name isn't taken
+		if (existsLiteralDictionary(&interpreter->scope->variables, dictName)) {
+			interpreter->errorOutput("Can't override an existing variable\n");
+			freeLiteral(dictName);
+			return false;
+		}
+
+		LiteralDictionary* dictionary = ALLOCATE(LiteralDictionary, 1);
+		initLiteralDictionary(dictionary);
+
+		for (int i = 0; natives[i].name; i++) {
+			Literal name = TO_STRING_LITERAL(copyString(natives[i].name, strlen(natives[i].name)), strlen(natives[i].name));
+			Literal func = TO_FUNCTION_LITERAL((void*)natives[i].fn, 0);
+			func.type = LITERAL_FUNCTION_NATIVE;
+
+			setLiteralDictionary(dictionary, name, func);
+
+			freeLiteral(name);
+			freeLiteral(func);
+		}
+
+		//build the type
+		Literal type = TO_TYPE_LITERAL(LITERAL_DICTIONARY, true);
+		Literal strType = TO_TYPE_LITERAL(LITERAL_STRING, true);
+		Literal fnType = TO_TYPE_LITERAL(LITERAL_FUNCTION_NATIVE, true);
+		TYPE_PUSH_SUBTYPE(&type, strType);
+		TYPE_PUSH_SUBTYPE(&type, fnType);
+
+		//set scope
+		Literal dict = TO_DICTIONARY_LITERAL(dictionary);
+		setLiteralDictionary(&interpreter->scope->variables, dictName, dict);
+		setLiteralDictionary(&interpreter->scope->types, dictName, type);
+
+		//cleanup
+		freeLiteral(dict);
+		freeLiteral(type);
+		freeLiteral(dictName);
+		return 0;
+	}
+	*/
+
+	//default
+	for (int i = 0; natives[i].name; i++) {
+		injectNativeFn(interpreter, natives[i].name, natives[i].fn);
+	}
+
+	return 0;
+}
+