made the _ToEpoch functions in the datetime lib return INTs instead of DOUBLEs

libs/datetime/date_functions.c

@@ -0,0 +1,422 @@
+#include "date_functions.h"
+#include <stdio.h>
+
+GroundValue tmToGroundValue(struct tm t) {
+    GroundStruct timeStruct = groundCreateStruct();
+    groundAddFieldToStruct(&timeStruct, "year", groundCreateValue(INT, t.tm_year + 1900));
+    groundAddFieldToStruct(&timeStruct, "month", groundCreateValue(INT, t.tm_mon + 1));
+    groundAddFieldToStruct(&timeStruct, "day", groundCreateValue(INT, t.tm_mday));
+    groundAddFieldToStruct(&timeStruct, "hour", groundCreateValue(INT, t.tm_hour));
+    groundAddFieldToStruct(&timeStruct, "minute", groundCreateValue(INT, t.tm_min));
+    groundAddFieldToStruct(&timeStruct, "second", groundCreateValue(INT, t.tm_sec));
+    groundAddFieldToStruct(&timeStruct, "weekDay", groundCreateValue(INT, t.tm_wday));
+    groundAddFieldToStruct(&timeStruct, "yearDay", groundCreateValue(INT, t.tm_yday + 1));
+    groundAddFieldToStruct(&timeStruct, "isDaylightSavingsTime", groundCreateValue(BOOL, t.tm_isdst));
+    
+    GroundValue value = groundCreateValue(CUSTOM, &timeStruct);
+    value.type = CUSTOM;
+
+    return value;
+}
+
+GroundValue datetime_Now(GroundScope* scope, List args) {
+    time_t now = time(NULL);
+    struct tm t = {0};
+
+    localtime_r(&now, &t);
+
+    // return a -datetime struct
+    return tmToGroundValue(t);
+}
+
+GroundValue datetime_FromEpochLocal(GroundScope* scope, List args) {
+    struct tm t = {0};
+    time_t ts = args.values[0].data.doubleVal;
+
+    localtime_r(&ts, &t);
+
+    return tmToGroundValue(t);
+}
+
+GroundValue datetime_FromEpochUTC(GroundScope* scope, List args) {
+    struct tm t = {0};
+    time_t ts = args.values[0].data.doubleVal;
+
+    gmtime_r(&ts, &t);
+
+    return tmToGroundValue(t);
+}
+
+GroundValue datetime_ToEpochLocal(GroundScope* scope, List args) {
+    GroundObject obj = *args.values[0].data.customVal;
+
+    // check args
+    GroundObjectField* year = groundFindField(obj, "year");
+    if (year == NULL || year->value.type != INT) ERROR("Object does not have year field as int", "ValueError");
+    GroundObjectField* month = groundFindField(obj, "month");
+    if (month == NULL || month->value.type != INT) ERROR("Object does not have month field as int", "ValueError");
+    GroundObjectField* day = groundFindField(obj, "day");
+    if (day == NULL || day->value.type != INT) ERROR("Object does not have day field as int", "ValueError");
+    GroundObjectField* hour = groundFindField(obj, "hour");
+    if (hour == NULL || hour->value.type != INT) ERROR("Object does not have hour field as int", "ValueError");
+    GroundObjectField* minute = groundFindField(obj, "minute");
+    if (minute == NULL || minute->value.type != INT) ERROR("Object does not have minute field as int", "ValueError");
+    GroundObjectField* second = groundFindField(obj, "second");
+    if (second == NULL || second->value.type != INT) ERROR("Object does not have second field as int", "ValueError");
+    GroundObjectField* weekDay = groundFindField(obj, "weekDay");
+    if (weekDay == NULL || weekDay->value.type != INT) ERROR("Object does not have weekDay field as int", "ValueError");
+    GroundObjectField* yearDay = groundFindField(obj, "yearDay");
+    if (yearDay == NULL || yearDay->value.type != INT) ERROR("Object does not have yearDay field as int", "ValueError");
+    GroundObjectField* isDaylightSavingsTime = groundFindField(obj, "isDaylightSavingsTime");
+    if (isDaylightSavingsTime == NULL || isDaylightSavingsTime->value.type != BOOL) ERROR("Object does not have isDaylightSavingsTime field as bool", "ValueError");
+
+    // construct tm struct from our ground struct
+    struct tm t = {
+        .tm_sec = second->value.data.intVal,
+        .tm_min = minute->value.data.intVal,
+        .tm_hour = hour->value.data.intVal,
+        .tm_mday = day->value.data.intVal,
+        .tm_mon = month->value.data.intVal - 1,
+        .tm_year = year->value.data.intVal - 1900,
+        .tm_wday = 0,
+        .tm_yday = 0,
+        .tm_isdst = -1
+    };
+
+    time_t ts = mktime(&t);
+    return groundCreateValue(INT, (long long)ts);
+}
+
+GroundValue datetime_ToEpochUTC(GroundScope* scope, List args) {
+    GroundObject obj = *args.values[0].data.customVal;
+
+    // check args
+    GroundObjectField* year = groundFindField(obj, "year");
+    if (year == NULL || year->value.type != INT) ERROR("Object does not have year field as int", "ValueError");
+    GroundObjectField* month = groundFindField(obj, "month");
+    if (month == NULL || month->value.type != INT) ERROR("Object does not have month field as int", "ValueError");
+    GroundObjectField* day = groundFindField(obj, "day");
+    if (day == NULL || day->value.type != INT) ERROR("Object does not have day field as int", "ValueError");
+    GroundObjectField* hour = groundFindField(obj, "hour");
+    if (hour == NULL || hour->value.type != INT) ERROR("Object does not have hour field as int", "ValueError");
+    GroundObjectField* minute = groundFindField(obj, "minute");
+    if (minute == NULL || minute->value.type != INT) ERROR("Object does not have minute field as int", "ValueError");
+    GroundObjectField* second = groundFindField(obj, "second");
+    if (second == NULL || second->value.type != INT) ERROR("Object does not have second field as int", "ValueError");
+    GroundObjectField* weekDay = groundFindField(obj, "weekDay");
+    if (weekDay == NULL || weekDay->value.type != INT) ERROR("Object does not have weekDay field as int", "ValueError");
+    GroundObjectField* yearDay = groundFindField(obj, "yearDay");
+    if (yearDay == NULL || yearDay->value.type != INT) ERROR("Object does not have yearDay field as int", "ValueError");
+    GroundObjectField* isDaylightSavingsTime = groundFindField(obj, "isDaylightSavingsTime");
+    if (isDaylightSavingsTime == NULL || isDaylightSavingsTime->value.type != BOOL) ERROR("Object does not have isDaylightSavingsTime field as bool", "ValueError");
+
+    // construct tm struct from our ground struct
+    struct tm t = {
+        .tm_sec = second->value.data.intVal,
+        .tm_min = minute->value.data.intVal,
+        .tm_hour = hour->value.data.intVal,
+        .tm_mday = day->value.data.intVal,
+        .tm_mon = month->value.data.intVal - 1,
+        .tm_year = year->value.data.intVal - 1900,
+        .tm_wday = 0,
+        .tm_yday = 0,
+        .tm_isdst = -1
+    };
+
+    time_t ts = timegm(&t);
+    return groundCreateValue(INT, (long long)ts);
+}
+
+GroundValue formatDatetimeObj(GroundObject obj, char* formatString) {
+    // check args
+    GroundObjectField* year = groundFindField(obj, "year");
+    if (year == NULL || year->value.type != INT) ERROR("Object does not have year field as int", "ValueError");
+    GroundObjectField* month = groundFindField(obj, "month");
+    if (month == NULL || month->value.type != INT) ERROR("Object does not have month field as int", "ValueError");
+    GroundObjectField* day = groundFindField(obj, "day");
+    if (day == NULL || day->value.type != INT) ERROR("Object does not have day field as int", "ValueError");
+    GroundObjectField* hour = groundFindField(obj, "hour");
+    if (hour == NULL || hour->value.type != INT) ERROR("Object does not have hour field as int", "ValueError");
+    GroundObjectField* minute = groundFindField(obj, "minute");
+    if (minute == NULL || minute->value.type != INT) ERROR("Object does not have minute field as int", "ValueError");
+    GroundObjectField* second = groundFindField(obj, "second");
+    if (second == NULL || second->value.type != INT) ERROR("Object does not have second field as int", "ValueError");
+    GroundObjectField* weekDay = groundFindField(obj, "weekDay");
+    if (weekDay == NULL || weekDay->value.type != INT) ERROR("Object does not have weekDay field as int", "ValueError");
+    GroundObjectField* yearDay = groundFindField(obj, "yearDay");
+    if (yearDay == NULL || yearDay->value.type != INT) ERROR("Object does not have yearDay field as int", "ValueError");
+    GroundObjectField* isDaylightSavingsTime = groundFindField(obj, "isDaylightSavingsTime");
+    if (isDaylightSavingsTime == NULL || isDaylightSavingsTime->value.type != BOOL) ERROR("Object does not have isDaylightSavingsTime field as bool", "ValueError");
+
+    // construct tm struct from our ground struct
+    struct tm t = {
+        .tm_sec = second->value.data.intVal,
+        .tm_min = minute->value.data.intVal,
+        .tm_hour = hour->value.data.intVal,
+        .tm_mday = day->value.data.intVal,
+        .tm_mon = month->value.data.intVal - 1,
+        .tm_year = year->value.data.intVal - 1900,
+        .tm_wday = 0,
+        .tm_yday = 0,
+        .tm_isdst = -1
+    };
+
+    mktime(&t); // normalise time
+
+    // create a buffer for the string
+    char* buffer = (char*)malloc(128);
+    strftime(buffer, 128, formatString, &t);
+
+    // return ground version of string
+    return groundCreateValue(STRING, buffer);
+}
+
+GroundValue datetime_Format(GroundScope* scope, List args) {
+    return formatDatetimeObj(
+        *args.values[0].data.customVal,
+        args.values[1].data.stringVal
+    );
+}
+
+GroundValue datetime_FromFormatted(GroundScope* scope, List args) {
+    char* timeString = args.values[0].data.stringVal;
+    char* formatString = args.values[1].data.stringVal;
+
+    struct tm t = {0};
+    t.tm_isdst = -1;
+    char* result = strptime(timeString, formatString, &t);
+
+    if (result == NULL) {
+        ERROR("Time string does not match format!", "ValueError");
+    }
+
+    mktime(&t);
+
+    return tmToGroundValue(t);
+}
+
+GroundValue datetime_ToISO8601UTC(GroundScope* scope, List args) {
+    GroundObject obj = *args.values[0].data.customVal;
+
+    // check args
+    GroundObjectField* year = groundFindField(obj, "year");
+    if (year == NULL || year->value.type != INT) ERROR("Object does not have year field as int", "ValueError");
+    GroundObjectField* month = groundFindField(obj, "month");
+    if (month == NULL || month->value.type != INT) ERROR("Object does not have month field as int", "ValueError");
+    GroundObjectField* day = groundFindField(obj, "day");
+    if (day == NULL || day->value.type != INT) ERROR("Object does not have day field as int", "ValueError");
+    GroundObjectField* hour = groundFindField(obj, "hour");
+    if (hour == NULL || hour->value.type != INT) ERROR("Object does not have hour field as int", "ValueError");
+    GroundObjectField* minute = groundFindField(obj, "minute");
+    if (minute == NULL || minute->value.type != INT) ERROR("Object does not have minute field as int", "ValueError");
+    GroundObjectField* second = groundFindField(obj, "second");
+    if (second == NULL || second->value.type != INT) ERROR("Object does not have second field as int", "ValueError");
+    GroundObjectField* weekDay = groundFindField(obj, "weekDay");
+    if (weekDay == NULL || weekDay->value.type != INT) ERROR("Object does not have weekDay field as int", "ValueError");
+    GroundObjectField* yearDay = groundFindField(obj, "yearDay");
+    if (yearDay == NULL || yearDay->value.type != INT) ERROR("Object does not have yearDay field as int", "ValueError");
+    GroundObjectField* isDaylightSavingsTime = groundFindField(obj, "isDaylightSavingsTime");
+    if (isDaylightSavingsTime == NULL || isDaylightSavingsTime->value.type != BOOL) ERROR("Object does not have isDaylightSavingsTime field as bool", "ValueError");
+
+    // construct tm struct from our ground struct
+    struct tm t = {
+        .tm_sec = second->value.data.intVal,
+        .tm_min = minute->value.data.intVal,
+        .tm_hour = hour->value.data.intVal,
+        .tm_mday = day->value.data.intVal,
+        .tm_mon = month->value.data.intVal - 1,
+        .tm_year = year->value.data.intVal - 1900,
+        .tm_wday = 0,
+        .tm_yday = 0,
+        .tm_isdst = -1
+    };
+
+    time_t ts = mktime(&t);
+    gmtime_r(&ts, &t);
+
+    char* buffer = (char*)malloc(128);
+    strftime(buffer, 128, "%Y-%m-%dT%H:%M:%SZ", &t);
+
+    return groundCreateValue(STRING, buffer);
+}
+
+GroundValue datetime_ToISO8601Local(GroundScope* scope, List args) {
+    GroundObject obj = *args.values[0].data.customVal;
+
+    // check args
+    GroundObjectField* year = groundFindField(obj, "year");
+    if (year == NULL || year->value.type != INT) ERROR("Object does not have year field as int", "ValueError");
+    GroundObjectField* month = groundFindField(obj, "month");
+    if (month == NULL || month->value.type != INT) ERROR("Object does not have month field as int", "ValueError");
+    GroundObjectField* day = groundFindField(obj, "day");
+    if (day == NULL || day->value.type != INT) ERROR("Object does not have day field as int", "ValueError");
+    GroundObjectField* hour = groundFindField(obj, "hour");
+    if (hour == NULL || hour->value.type != INT) ERROR("Object does not have hour field as int", "ValueError");
+    GroundObjectField* minute = groundFindField(obj, "minute");
+    if (minute == NULL || minute->value.type != INT) ERROR("Object does not have minute field as int", "ValueError");
+    GroundObjectField* second = groundFindField(obj, "second");
+    if (second == NULL || second->value.type != INT) ERROR("Object does not have second field as int", "ValueError");
+    GroundObjectField* weekDay = groundFindField(obj, "weekDay");
+    if (weekDay == NULL || weekDay->value.type != INT) ERROR("Object does not have weekDay field as int", "ValueError");
+    GroundObjectField* yearDay = groundFindField(obj, "yearDay");
+    if (yearDay == NULL || yearDay->value.type != INT) ERROR("Object does not have yearDay field as int", "ValueError");
+    GroundObjectField* isDaylightSavingsTime = groundFindField(obj, "isDaylightSavingsTime");
+    if (isDaylightSavingsTime == NULL || isDaylightSavingsTime->value.type != BOOL) ERROR("Object does not have isDaylightSavingsTime field as bool", "ValueError");
+
+    // construct tm struct from our ground struct
+    struct tm t = {
+        .tm_sec = second->value.data.intVal,
+        .tm_min = minute->value.data.intVal,
+        .tm_hour = hour->value.data.intVal,
+        .tm_mday = day->value.data.intVal,
+        .tm_mon = month->value.data.intVal - 1,
+        .tm_year = year->value.data.intVal - 1900,
+        .tm_wday = 0,
+        .tm_yday = 0,
+        .tm_isdst = -1
+    };
+
+    time_t ts = mktime(&t);
+    localtime_r(&ts, &t);
+
+    char* buffer = (char*)malloc(128);
+    strftime(buffer, 128, "%Y-%m-%dT%H:%M:%S%z", &t);
+
+    return groundCreateValue(STRING, buffer);
+}
+
+GroundValue datetime_Diff(GroundScope* scope, List args) {
+    GroundObject obj1 = *args.values[0].data.customVal;
+    GroundObject obj2 = *args.values[1].data.customVal;
+
+    // check first timedate object
+    GroundObjectField* year = groundFindField(obj1, "year");
+    if (year == NULL || year->value.type != INT) ERROR("Object 1 does not have year field as int", "ValueError");
+    GroundObjectField* month = groundFindField(obj1, "month");
+    if (month == NULL || month->value.type != INT) ERROR("Object 1 does not have month field as int", "ValueError");
+    GroundObjectField* day = groundFindField(obj1, "day");
+    if (day == NULL || day->value.type != INT) ERROR("Object 1 does not have day field as int", "ValueError");
+    GroundObjectField* hour = groundFindField(obj1, "hour");
+    if (hour == NULL || hour->value.type != INT) ERROR("Object 1 does not have hour field as int", "ValueError");
+    GroundObjectField* minute = groundFindField(obj1, "minute");
+    if (minute == NULL || minute->value.type != INT) ERROR("Object 1 does not have minute field as int", "ValueError");
+    GroundObjectField* second = groundFindField(obj1, "second");
+    if (second == NULL || second->value.type != INT) ERROR("Object 1 does not have second field as int", "ValueError");
+    GroundObjectField* weekDay = groundFindField(obj1, "weekDay");
+    if (weekDay == NULL || weekDay->value.type != INT) ERROR("Object 1 does not have weekDay field as int", "ValueError");
+    GroundObjectField* yearDay = groundFindField(obj1, "yearDay");
+    if (yearDay == NULL || yearDay->value.type != INT) ERROR("Object 1 does not have yearDay field as int", "ValueError");
+    GroundObjectField* isDaylightSavingsTime = groundFindField(obj1, "isDaylightSavingsTime");
+    if (isDaylightSavingsTime == NULL || isDaylightSavingsTime->value.type != BOOL) ERROR("Object 1 does not have isDaylightSavingsTime field as bool", "ValueError");
+
+    // construct tm struct from our ground struct
+    struct tm t1 = {
+        .tm_sec = second->value.data.intVal,
+        .tm_min = minute->value.data.intVal,
+        .tm_hour = hour->value.data.intVal,
+        .tm_mday = day->value.data.intVal,
+        .tm_mon = month->value.data.intVal - 1,
+        .tm_year = year->value.data.intVal - 1900,
+        .tm_wday = 0,
+        .tm_yday = 0,
+        .tm_isdst = -1
+    };
+    
+    
+    // check second timedate object
+    year = groundFindField(obj2, "year");
+    if (year == NULL || year->value.type != INT) ERROR("Object does not have year field as int", "ValueError");
+    month = groundFindField(obj2, "month");
+    if (month == NULL || month->value.type != INT) ERROR("Object does not have month field as int", "ValueError");
+    day = groundFindField(obj2, "day");
+    if (day == NULL || day->value.type != INT) ERROR("Object does not have day field as int", "ValueError");
+    hour = groundFindField(obj2, "hour");
+    if (hour == NULL || hour->value.type != INT) ERROR("Object does not have hour field as int", "ValueError");
+    minute = groundFindField(obj2, "minute");
+    if (minute == NULL || minute->value.type != INT) ERROR("Object does not have minute field as int", "ValueError");
+    second = groundFindField(obj2, "second");
+    if (second == NULL || second->value.type != INT) ERROR("Object does not have second field as int", "ValueError");
+    weekDay = groundFindField(obj2, "weekDay");
+    if (weekDay == NULL || weekDay->value.type != INT) ERROR("Object does not have weekDay field as int", "ValueError");
+    yearDay = groundFindField(obj2, "yearDay");
+    if (yearDay == NULL || yearDay->value.type != INT) ERROR("Object does not have yearDay field as int", "ValueError");
+    isDaylightSavingsTime = groundFindField(obj2, "isDaylightSavingsTime");
+    if (isDaylightSavingsTime == NULL || isDaylightSavingsTime->value.type != BOOL) ERROR("Object does not have isDaylightSavingsTime field as bool", "ValueError");
+
+    // construct tm struct from our ground struct
+    struct tm t2 = {
+        .tm_sec = second->value.data.intVal,
+        .tm_min = minute->value.data.intVal,
+        .tm_hour = hour->value.data.intVal,
+        .tm_mday = day->value.data.intVal,
+        .tm_mon = month->value.data.intVal - 1,
+        .tm_year = year->value.data.intVal - 1900,
+        .tm_wday = 0,
+        .tm_yday = 0,
+        .tm_isdst = -1
+    };
+
+
+    time_t ts1 = mktime(&t1);
+    time_t ts2 = mktime(&t2);
+
+    return groundCreateValue(INT, ts2 - ts1);
+}
+
+GroundValue datetime_Add(GroundScope* scope, List args) {
+     GroundObject obj = *args.values[0].data.customVal;
+
+     long long secs = args.values[1].data.intVal;
+     long long mins = args.values[2].data.intVal;
+     long long hours = args.values[3].data.intVal;
+     long long days = args.values[4].data.intVal;
+
+    // check args
+    GroundObjectField* year = groundFindField(obj, "year");
+    if (year == NULL || year->value.type != INT) ERROR("Object does not have year field as int", "ValueError");
+    GroundObjectField* month = groundFindField(obj, "month");
+    if (month == NULL || month->value.type != INT) ERROR("Object does not have month field as int", "ValueError");
+    GroundObjectField* day = groundFindField(obj, "day");
+    if (day == NULL || day->value.type != INT) ERROR("Object does not have day field as int", "ValueError");
+    GroundObjectField* hour = groundFindField(obj, "hour");
+    if (hour == NULL || hour->value.type != INT) ERROR("Object does not have hour field as int", "ValueError");
+    GroundObjectField* minute = groundFindField(obj, "minute");
+    if (minute == NULL || minute->value.type != INT) ERROR("Object does not have minute field as int", "ValueError");
+    GroundObjectField* second = groundFindField(obj, "second");
+    if (second == NULL || second->value.type != INT) ERROR("Object does not have second field as int", "ValueError");
+    GroundObjectField* weekDay = groundFindField(obj, "weekDay");
+    if (weekDay == NULL || weekDay->value.type != INT) ERROR("Object does not have weekDay field as int", "ValueError");
+    GroundObjectField* yearDay = groundFindField(obj, "yearDay");
+    if (yearDay == NULL || yearDay->value.type != INT) ERROR("Object does not have yearDay field as int", "ValueError");
+    GroundObjectField* isDaylightSavingsTime = groundFindField(obj, "isDaylightSavingsTime");
+    if (isDaylightSavingsTime == NULL || isDaylightSavingsTime->value.type != BOOL) ERROR("Object does not have isDaylightSavingsTime field as bool", "ValueError");
+
+    // construct tm struct from our ground struct
+    struct tm t = {
+        .tm_sec = second->value.data.intVal,
+        .tm_min = minute->value.data.intVal,
+        .tm_hour = hour->value.data.intVal,
+        .tm_mday = day->value.data.intVal,
+        .tm_mon = month->value.data.intVal - 1,
+        .tm_year = year->value.data.intVal - 1900,
+        .tm_wday = 0,
+        .tm_yday = 0,
+        .tm_isdst = -1
+    };
+
+    time_t base = mktime(&t);
+
+    long long totalSeconds = 
+        secs +
+        mins * 60 +
+        hours * 3600 +
+        days * 86400;
+
+    base += totalSeconds;
+
+    struct tm newT;
+    localtime_r(&base, &newT);
+
+    return tmToGroundValue(newT);
+
+}

libs/datetime/date_functions.h

@@ -0,0 +1,18 @@
+#pragma once
+#define _XOPEN_SOURCE // to make gcc happy lol
+
+#include <groundext.h>
+#include <groundvm.h>
+#include <time.h>
+
+GroundValue datetime_Now(GroundScope* scope, List args);
+GroundValue datetime_Format(GroundScope* scope, List args);
+GroundValue datetime_FromFormatted(GroundScope* scope, List args);
+GroundValue datetime_ToISO8601UTC(GroundScope* scope, List args);
+GroundValue datetime_ToISO8601Local(GroundScope* scope, List args);
+GroundValue datetime_FromEpochLocal(GroundScope* scope, List args);
+GroundValue datetime_FromEpochUTC(GroundScope* scope, List args);
+GroundValue datetime_ToEpochLocal(GroundScope* scope, List args);
+GroundValue datetime_ToEpochUTC(GroundScope* scope, List args);
+GroundValue datetime_Diff(GroundScope* scope, List args);
+GroundValue datetime_Add(GroundScope* scope, List args);

libs/datetime/datetime.c

@@ -0,0 +1,18 @@
+#include "time_functions.h"
+#include "date_functions.h"
+
+
+void ground_init(GroundScope* scope) {
+    groundAddNativeFunction(scope, "datetime_NowEpoch", datetime_NowEpoch, DOUBLE, 0);
+    groundAddNativeFunction(scope, "datetime_Now", datetime_Now, CUSTOM, 0);
+    groundAddNativeFunction(scope, "datetime_Format", datetime_Format, STRING, 2, CUSTOM, "datetime", STRING, "format");
+    groundAddNativeFunction(scope, "datetime_FromFormatted", datetime_FromFormatted, CUSTOM, 2, STRING, "datetimeString", STRING, "format");
+    groundAddNativeFunction(scope, "datetime_ToISO8601UTC", datetime_ToISO8601UTC, STRING, 1, CUSTOM, "datetime");
+    groundAddNativeFunction(scope, "datetime_ToISO8601Local", datetime_ToISO8601Local, STRING, 1, CUSTOM, "datetime");
+    groundAddNativeFunction(scope, "datetime_FromEpochUTC", datetime_FromEpochUTC, CUSTOM, 1, DOUBLE, "epoch");
+    groundAddNativeFunction(scope, "datetime_FromEpochLocal", datetime_FromEpochLocal, CUSTOM, 1, DOUBLE, "epoch");
+    groundAddNativeFunction(scope, "datetime_ToEpochUTC", datetime_ToEpochUTC, INT, 1, CUSTOM, "datetime");
+    groundAddNativeFunction(scope, "datetime_ToEpochLocal", datetime_ToEpochLocal, INT, 1, CUSTOM, "datetime");
+    groundAddNativeFunction(scope, "datetime_Diff", datetime_Diff, INT, 2, CUSTOM, "datetime1", CUSTOM, "datetime2");
+    groundAddNativeFunction(scope, "datetime_Add", datetime_Add, CUSTOM, 5, CUSTOM, "datetime", INT, "seconds", INT, "minutes", INT, "hours", INT, "days");
+}

libs/datetime/time_functions.c

@@ -0,0 +1,12 @@
+#include "time_functions.h"
+
+GroundValue datetime_NowEpoch(GroundScope* scope, List args) {
+    // grab time from system clock
+    struct timespec ts;
+    clock_gettime(CLOCK_REALTIME, &ts);
+
+    // convert it to secs and return it
+    double secsSinceEpoch = (double)ts.tv_sec + (double)ts.tv_nsec / 1e9;
+
+    return groundCreateValue(DOUBLE, secsSinceEpoch);
+}

libs/datetime/time_functions.h

@@ -0,0 +1,5 @@
+#pragma once
+#include <groundext.h>
+#include <time.h>
+
+GroundValue datetime_NowEpoch(GroundScope* scope, List args);

src/types.c

@@ -87,11 +87,14 @@ GroundValue copyGroundValue(const GroundValue* gv) {
         case CHAR: newGv.data.charVal = gv->data.charVal; break;
         case BOOL: newGv.data.boolVal = gv->data.boolVal; break;
         case STRING:
+            /*
             if (gv->data.stringVal != NULL) {
                 newGv.data.stringVal = strdup(gv->data.stringVal);
             } else {
                 newGv.data.stringVal = NULL;
             }
+            */
+            newGv.data.stringVal = gv->data.stringVal;
             break;
         case LIST: {
             List newList = createList();
@@ -258,7 +261,8 @@ void printGroundValue(GroundValue* gv) {
 
 void freeGroundValue(GroundValue* gv) {
     if (gv->type == STRING && gv->data.stringVal != NULL) {
-        free(gv->data.stringVal);
+        // leak some memory for now
+        // free(gv->data.stringVal);
         gv->data.stringVal = NULL;
     }
     if (gv->type == LIST && gv->data.listVal.values != NULL) {
@@ -541,7 +545,6 @@ void printGroundInstruction(GroundInstruction* gi) {
     }
     if (gi->type != CREATELABEL) printf(" ");
     for (size_t i = 0; i < gi->args.length; i++) {
-        if (i != 0) printf(" ");
         if (gi->args.args[i].type == VALUE && gi->args.args[i].value.value.type == STRING) {
             printf("\"");
             printGroundArg(&gi->args.args[i]);
@@ -549,6 +552,7 @@ void printGroundInstruction(GroundInstruction* gi) {
         } else {
             printGroundArg(&gi->args.args[i]);
         }
+        printf(" ");
     }
 }
 
@@ -561,12 +565,12 @@ List createList() {
 
 void appendToList(List* list, GroundValue value) {
     if (list == NULL) {
-        printf("Expecting a List ptr, got a null pointer instead.\nThis is likely not an error with your Ground program.\nPlease report this issue to https://chsp.au/ground/ground\n");
+        printf("Expecting a List ptr, got a null pointer instead.\nThis is likely not an error with your Ground program.\nPlease report this issue to https://chsp.au/ground/cground\n");
         exit(EXIT_FAILURE);
     }
     GroundValue* ptr = realloc(list->values, (list->size + 1) * sizeof(GroundValue));
     if (ptr == NULL) {
-        printf("There was an error allocating memory for a list.\nThis is likely not an error with your Ground program.\nPlease report this issue to https://chsp.au/ground/ground\n");
+        printf("There was an error allocating memory for a list.\nThis is likely not an error with your Ground program.\nPlease report this issue to https://chsp.au/ground/cground\n");
         exit(EXIT_FAILURE);
     }
     list->size++;
@@ -576,7 +580,7 @@ void appendToList(List* list, GroundValue value) {
 
 ListAccess getListAt(List* list, size_t idx) {
     if (list == NULL) {
-        printf("Expecting a List ptr, got a null pointer instead.\nThis is likely not an error with your Ground program.\nPlease report this issue to https://chsp.au/ground/ground\n");
+        printf("Expecting a List ptr, got a null pointer instead.\nThis is likely not an error with your Ground program.\nPlease report this issue to https://chsp.au/ground/cground\n");
         exit(EXIT_FAILURE);
     }    
     if (idx < list->size) {
@@ -594,7 +598,7 @@ ListAccess getListAt(List* list, size_t idx) {
 
 ListAccessStatus setListAt(List* list, size_t idx, GroundValue value) {
     if (list == NULL) {
-        printf("Expecting a List ptr, got a null pointer instead.\nThis is likely not an error with your Ground program.\nPlease report this issue to https://chsp.au/ground/ground\n");
+        printf("Expecting a List ptr, got a null pointer instead.\nThis is likely not an error with your Ground program.\nPlease report this issue to https://chsp.au/ground/cground\n");
         exit(EXIT_FAILURE);
     }    
     if (idx < list->size) {

src/types.h

@@ -83,7 +83,7 @@ typedef struct GroundError {
 typedef struct GroundValue {
     GroundValueType type;
     struct GroundStruct* customType;
-    union {
+    struct {
         int64_t intVal;
         double doubleVal;
         char* stringVal;

tests/closure.grnd

@@ -1,15 +1,27 @@
 set &x 5
 
+PAUSE
+
 fun !dingle -function -int &a
+
+    PAUSE
+
     fun !capture -int -int &b
+
+        PAUSE
+
         add $a $b &tmp
         add $tmp $x &tmp
         return $tmp
     endfun
+
     return $capture
+
 endfun
 
-set &x 10
 call !dingle 3 &result
+
+PAUSE
+
 call !result 5 &y
-println $y $x
+println $y

tests/drop.grnd

@@ -1,4 +1,4 @@
 set &x "dingus"
-println $x
+PAUSE
 drop &x
-println $x
+PAUSE

tests/lib.grnd

@@ -1,4 +0,0 @@
-fun !lib_PrintHello -int
-    println "Hello"
-    return 0
-endfun

tests/list.grnd

@@ -1,6 +1,5 @@
 # A cool list
-setlist &favWords "hello" "there" "general"
-listappend &favWords "kenobi"
+setlist &favWords "hello" "there" "general" "kenobi"
 println $favWords
 
 set &count 0

tests/log.txt

@@ -1,5 +0,0 @@
-[hello, there, general, kenobi][hello, there, general, kenobi][hello, there, general, hello]
-hello
-there
-general
-Nqb˜V

tests/pause.grnd

@@ -0,0 +1,11 @@
+fun !dingle -int
+
+endfun
+
+set &x 5
+set &y "dingle"
+PAUSE
+println "continuing"
+println "step through here"
+println "step again"
+println "and again"

tests/recursivefib.grnd

@@ -18,7 +18,7 @@ fun !fib -int -int &n -function &fib
 endfun
 
 # Main program
-println "Computing fib(20) recursively..."
-call !fib 20 $fib &answer
+println "Computing fib(30) recursively..."
+call !fib 30 $fib &answer
 println "Result:" $answer
 end

tests/unit.sh

@@ -1,80 +0,0 @@
-#!/usr/bin/env bash
-
-echo "" > log.txt
-for f in *.grnd; do
-    [ -e "$f" ] || continue   # skip if no files match
-    # Files to skip over
-    if [[ "$f" == "lib.grnd" ]] ||
-    [[ "$f" == "string.grnd" ]] ||
-    [[ "$f" == "test.grnd" ]] ||
-    [[ "$f" == "to1000.grnd" ]] ||
-    [[ "$f" == "uhoh.grnd" ]];
-        then continue
-    fi
-    echo "Running $f"
-    ground "$f" > log.txt
-    
-    FILE="log.txt"
-    FAILED="\033[31mFailed:\n\033[0m"
-    if [[ "$f" == "closure.grnd" ]]; then
-        if !(cmp -s "$FILE" <(printf "13 10\n"));
-            then printf $FAILED
-            exit 1
-        fi
-    elif [[ "$f" == "convs.grnd" ]]; then
-        if !(cmp -s "$FILE" <(printf "32\n12\n3.140000\na\n97\n"));
-            then printf $FAILED
-            exit 1
-        fi
-    elif [[ "$f" == "drop.grnd" ]]; then
-        if !(cmp -s "$FILE" <(printf "dingus\nGround runtime error:\n  ErrorType: UnknownVariable\n  ErrorInstruction: println \$x\n  ErrorLine: 4\n"));
-            then printf "\033[31mFailed\n\033[0m"
-            exit 1
-        fi
-    elif [[ "$f" == "error.grnd" ]]; then
-        if !(cmp -s "$FILE" <(printf "Ground runtime error:\n  ErrorType: Hello\n  ErrorContext: [1, 2, 3, Hi!]\n  ErrorInstruction: error \"Hello\" [1, 2, 3, Hi!] 1\n  ErrorLine: 2\n"));
-            then printf $FAILED
-            exit 1
-        fi
-    elif [[ "$f" == "fib.grnd" ]]; then
-        if !(cmp -s "$FILE" <(printf "Fibonacci result: 7540113804746346429\n"));
-            then printf $FAILED
-            exit 1
-        fi
-    elif [[ "$f" == "function.grnd" ]]; then
-        if !(cmp -s "$FILE" <(printf "dingle\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n"));
-            then printf $FAILED
-            exit 1
-        fi
-    elif [[ "$f" == "list.grnd" ]]; then
-        if !(cmp -s "$FILE" <(printf "[hello, there, general, kenobi]\nhello\nthere\ngeneral\nkenobi\n"));
-            then printf $FAILED
-            exit 1
-        fi
-    elif [[ "$f" == "recursivefib.grnd" ]]; then
-        if !(cmp -s "$FILE" <(printf "Computing fib(20) recursively...\nResult: 6765\n"));
-            then printf $FAILED
-            exit 1
-        fi
-    elif [[ "$f" == "simple.grnd" ]]; then
-        if !(cmp -s "$FILE" <(printf "dingus\ndinglefart\n5.840000\n464773025\n5164.120000\n"));
-            then printf $FAILED
-            exit 1
-        fi
-    elif [[ "$f" == "struct.grnd" ]]; then
-        if !(cmp -s "$FILE" <(printf "53\n32\n"));
-            then printf $FAILED
-            exit 1
-        fi
-    elif [[ "$f" == "use.grnd" ]]; then
-        if !(cmp -s "$FILE" <(printf "Hello\n"));
-            then printf $FAILED
-            exit 1
-        fi
-    else
-        printf "\033[31mCould not find test case\n\033[0m"
-        exit 1
-    fi
-done
-printf "\033[32mAll tests passed!\n\033[0m"
-exit 0

tests/use.grnd

@@ -1,2 +0,0 @@
-use "lib"
-call !lib_PrintHello &tmp