main.go

/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

package main

import (
"fmt"
"html"

"github.com/gopherjs/jquery"
"github.com/asciian/iris/runtime"
"github.com/asciian/iris/runtime/ilos"
"github.com/asciian/iris/runtime/ilos/class"
"github.com/asciian/iris/runtime/ilos/instance"
)

constversion="a0f4f8d"

varstream=make(chanstring)

typeDomstruct{}

func (Dom) Write(p []byte) (nint, errerror) {
jQuery("#output").Append(string(p))
returnlen(p), nil
}

func (domDom) Read(p []byte) (nint, errerror) {
s:=<-stream
fmt.Fprint(dom, s, "\n")
copy(p, []byte(s))
returnlen(p), nil
}

varjQuery=jquery.NewJQuery

funcmain() {
prompt:=true
dom:=new(Dom)
runtime.TopLevel.StandardInput=instance.NewStream(dom, nil)
runtime.TopLevel.StandardOutput=instance.NewStream(nil, dom)
runtime.TopLevel.ErrorOutput=instance.NewStream(nil, dom)
fmt.Fprintf(dom, `Welcome to Iris (%v). Iris is an ISLisp implementation on Go.
This REPL works on JavaScript with gopherjs.

Copyright &copy; 2017 asciian All Rights Reserved.`, version)
jQuery("#version").SetHtml(version)
jQuery("#input").On(jquery.KEYDOWN, func(e jquery.Event) {
if!e.ShiftKey&&e.KeyCode==13 {
ifprompt {
fmt.Fprint(dom, "\n> ")
 }
gofunc() {
input:=jQuery("#input").Html()
jQuery("#input").SetHtml("")
stream<-jQuery(`<span>`+input+`</span>`).Text()
 }()
 }
 })
for {
prompt=true
jQuery("#prompt").Show()
runtime.TopLevel.StandardInput=instance.NewStream(dom, nil)
exp, err:=runtime.Read(runtime.TopLevel)
iferr!=nil {
if!ilos.InstanceOf(class.EndOfStream, err) {
fmt.Fprint(dom, html.EscapeString(err.String()))
 }
continue
 }
prompt=false
jQuery("#prompt").Hide()
ret, err:=runtime.Eval(runtime.TopLevel, exp)
iferr!=nil {
fmt.Fprint(dom, html.EscapeString(err.String()))
continue
 }
fmt.Fprint(dom, html.EscapeString(ret.String()))
 }
}