Implement return, implement instant break, add exit function, implement dumping and loading of AST via encoding/json

defaults.go

@@ -17,6 +17,7 @@ package scpt
 import (
 	"errors"
 	"fmt"
+	"os"
 	"strconv"
 )
 
@@ -59,6 +60,27 @@ func setBreakLoop(_ map[string]interface{}) (interface{}, error) {
 	return nil, nil
 }
 
+// Default function to set the breakLoop variable to true, breaking any loops that may be running
+func setReturn(args map[string]interface{}) (interface{}, error) {
+	// If a loop is running
+	if funcRunning {
+		// Set breakLoop to true, breaking the loop on next cycle
+		retValue = args[""]
+	} else {
+		return nil, errors.New("return not inside function")
+	}
+	return nil, nil
+}
+
+func scptExit(args map[string]interface{}) (interface{}, error) {
+	exitCode, ok := args[""].(float64)
+	if !ok {
+		return nil, errors.New("exit requires an unnamed number argument")
+	}
+	os.Exit(int(exitCode))
+	return nil, nil
+}
+
 // Default function that returns an array with an appended element
 func appendArray(args map[string]interface{}) (interface{}, error) {
 	// Attempt to get unnamed argument and assert as []interface{}