scpt/defaults.go

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/*
Copyright (c) 2021 Arsen Musayelyan
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
*/
package scpt
import (
"errors"
"fmt"
"strconv"
)
// Default function to convert unnamed argument to a string using fmt.Sprint
func toString(args map[string]interface{}) (interface{}, error) {
val, ok := args[""]
if !ok {
return nil, errors.New("no value provided")
}
return fmt.Sprint(val), nil
}
// Default function to parse unnamed argument to a number using strconv.ParseFloat
func parseNumber(args map[string]interface{}) (interface{}, error) {
val, ok := args[""].(string)
if !ok {
return nil, errors.New("no value provided")
}
return strconv.ParseFloat(val, 64)
}
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// Default function to parse unnamed argument to a boolean using strconv.ParseBool
func parseBool(args map[string]interface{}) (interface{}, error) {
val, ok := args[""].(string)
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if !ok {
return nil, errors.New("no value provided")
}
return strconv.ParseBool(val)
}
// Default function to set the breakLoop variable to true, breaking any loops that may be running
func setBreakLoop(_ map[string]interface{}) (interface{}, error) {
// If a loop is running
if loopRunning {
// Set breakLoop to true, breaking the loop on next cycle
breakLoop = true
} else {
return nil, errors.New("break not inside loop")
}
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{}
val, ok := args[""].([]interface{})
if !ok {
return nil, errors.New("cannot append to non-array object")
}
// Attempt to get items argument and assert as []interface{}
items, ok := args["items"].([]interface{})
if !ok {
return nil, errors.New("items argument invalid or not provided")
}
// For every item in items argument
for _, item := range items {
// Append to unnamed argument
val = append(val, item)
}
// Return appended unnamed argument
return val, nil
}