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matterbridge/vendor/github.com/d5/tengo/objects/immautable_array.go
Wim 1bb39eba87
Add scripting (tengo) support for every incoming message (#731)
TengoModifyMessage allows you to specify the location of a tengo (https://github.com/d5/tengo/) script.
This script will receive every incoming message and can be used to modify the Username and the Text of that message.
The script will have the following global variables:
to modify: msgUsername and msgText
to read: msgChannel and msgAccount

The script is reloaded on every message, so you can modify the script on the fly.

Example script can be found in https://github.com/42wim/matterbridge/tree/master/gateway/bench.tengo
and https://github.com/42wim/matterbridge/tree/master/contrib/example.tengo

The example below will check if the text contains blah and if so, it'll replace the text and the username of that message.
text := import("text")
if text.re_match("blah",msgText) {
    msgText="replaced by this"
    msgUsername="fakeuser"
}

More information about tengo on: https://github.com/d5/tengo/blob/master/docs/tutorial.md and
https://github.com/d5/tengo/blob/master/docs/stdlib.md
2019-02-23 16:39:44 +01:00

110 lines
2.1 KiB
Go

package objects
import (
"fmt"
"strings"
"github.com/d5/tengo/compiler/token"
)
// ImmutableArray represents an immutable array of objects.
type ImmutableArray struct {
Value []Object
}
// TypeName returns the name of the type.
func (o *ImmutableArray) TypeName() string {
return "immutable-array"
}
func (o *ImmutableArray) String() string {
var elements []string
for _, e := range o.Value {
elements = append(elements, e.String())
}
return fmt.Sprintf("[%s]", strings.Join(elements, ", "))
}
// BinaryOp returns another object that is the result of
// a given binary operator and a right-hand side object.
func (o *ImmutableArray) BinaryOp(op token.Token, rhs Object) (Object, error) {
if rhs, ok := rhs.(*ImmutableArray); ok {
switch op {
case token.Add:
return &Array{Value: append(o.Value, rhs.Value...)}, nil
}
}
return nil, ErrInvalidOperator
}
// Copy returns a copy of the type.
func (o *ImmutableArray) Copy() Object {
var c []Object
for _, elem := range o.Value {
c = append(c, elem.Copy())
}
return &Array{Value: c}
}
// IsFalsy returns true if the value of the type is falsy.
func (o *ImmutableArray) IsFalsy() bool {
return len(o.Value) == 0
}
// Equals returns true if the value of the type
// is equal to the value of another object.
func (o *ImmutableArray) Equals(x Object) bool {
var xVal []Object
switch x := x.(type) {
case *Array:
xVal = x.Value
case *ImmutableArray:
xVal = x.Value
default:
return false
}
if len(o.Value) != len(xVal) {
return false
}
for i, e := range o.Value {
if !e.Equals(xVal[i]) {
return false
}
}
return true
}
// IndexGet returns an element at a given index.
func (o *ImmutableArray) IndexGet(index Object) (res Object, err error) {
intIdx, ok := index.(*Int)
if !ok {
err = ErrInvalidIndexType
return
}
idxVal := int(intIdx.Value)
if idxVal < 0 || idxVal >= len(o.Value) {
res = UndefinedValue
return
}
res = o.Value[idxVal]
return
}
// Iterate creates an array iterator.
func (o *ImmutableArray) Iterate() Iterator {
return &ArrayIterator{
v: o.Value,
l: len(o.Value),
}
}