[docs] Add Playground to website

go.mod

@@ -3,16 +3,8 @@ module github.com/flipez/rocket-lang
 go 1.18
 
 require (
-	github.com/abiosoft/ishell/v2 v2.0.2
+	github.com/chzyer/readline v1.5.1
 	github.com/spf13/pflag v1.0.5
 )
 
-require (
-	github.com/abiosoft/ishell v2.0.0+incompatible // indirect
-	github.com/abiosoft/readline v0.0.0-20180607040430-155bce2042db // indirect
-	github.com/fatih/color v1.12.0 // indirect
-	github.com/flynn-archive/go-shlex v0.0.0-20150515145356-3f9db97f8568 // indirect
-	github.com/mattn/go-colorable v0.1.8 // indirect
-	github.com/mattn/go-isatty v0.0.12 // indirect
-	golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f // indirect
-)
+require golang.org/x/sys v0.0.0-20220818161305-2296e01440c6 // indirect

go.sum

@@ -1,34 +1,11 @@
-github.com/abiosoft/ishell v2.0.0+incompatible h1:zpwIuEHc37EzrsIYah3cpevrIc8Oma7oZPxr03tlmmw=
-github.com/abiosoft/ishell v2.0.0+incompatible/go.mod h1:HQR9AqF2R3P4XXpMpI0NAzgHf/aS6+zVXRj14cVk9qg=
-github.com/abiosoft/ishell/v2 v2.0.2 h1:5qVfGiQISaYM8TkbBl7RFO6MddABoXpATrsFbVI+SNo=
-github.com/abiosoft/ishell/v2 v2.0.2/go.mod h1:E4oTCXfo6QjoCart0QYa5m9w4S+deXs/P/9jA77A9Bs=
-github.com/abiosoft/readline v0.0.0-20180607040430-155bce2042db h1:CjPUSXOiYptLbTdr1RceuZgSFDQ7U15ITERUGrUORx8=
-github.com/abiosoft/readline v0.0.0-20180607040430-155bce2042db/go.mod h1:rB3B4rKii8V21ydCbIzH5hZiCQE7f5E9SzUb/ZZx530=
-github.com/chzyer/logex v1.1.10 h1:Swpa1K6QvQznwJRcfTfQJmTE72DqScAa40E+fbHEXEE=
-github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
-github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1 h1:q763qf9huN11kDQavWsoZXJNW3xEE4JJyHa5Q25/sd8=
-github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
-github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
-github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/fatih/color v1.12.0 h1:mRhaKNwANqRgUBGKmnI5ZxEk7QXmjQeCcuYFMX2bfcc=
-github.com/fatih/color v1.12.0/go.mod h1:ELkj/draVOlAH/xkhN6mQ50Qd0MPOk5AAr3maGEBuJM=
-github.com/flynn-archive/go-shlex v0.0.0-20150515145356-3f9db97f8568 h1:BMXYYRWTLOJKlh+lOBt6nUQgXAfB7oVIQt5cNreqSLI=
-github.com/flynn-archive/go-shlex v0.0.0-20150515145356-3f9db97f8568/go.mod h1:rZfgFAXFS/z/lEd6LJmf9HVZ1LkgYiHx5pHhV5DR16M=
-github.com/mattn/go-colorable v0.1.8 h1:c1ghPdyEDarC70ftn0y+A/Ee++9zz8ljHG1b13eJ0s8=
-github.com/mattn/go-colorable v0.1.8/go.mod h1:u6P/XSegPjTcexA+o6vUJrdnUu04hMope9wVRipJSqc=
-github.com/mattn/go-isatty v0.0.12 h1:wuysRhFDzyxgEmMf5xjvJ2M9dZoWAXNNr5LSBS7uHXY=
-github.com/mattn/go-isatty v0.0.12/go.mod h1:cbi8OIDigv2wuxKPP5vlRcQ1OAZbq2CE4Kysco4FUpU=
-github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
-github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/chzyer/logex v1.2.1 h1:XHDu3E6q+gdHgsdTPH6ImJMIp436vR6MPtH8gP05QzM=
+github.com/chzyer/logex v1.2.1/go.mod h1:JLbx6lG2kDbNRFnfkgvh4eRJRPX1QCoOIWomwysCBrQ=
+github.com/chzyer/readline v1.5.1 h1:upd/6fQk4src78LMRzh5vItIt361/o4uq553V8B5sGI=
+github.com/chzyer/readline v1.5.1/go.mod h1:Eh+b79XXUwfKfcPLepksvw2tcLE/Ct21YObkaSkeBlk=
+github.com/chzyer/test v1.0.0 h1:p3BQDXSxOhOG0P9z6/hGnII4LGiEPOYBhs8asl/fC04=
+github.com/chzyer/test v1.0.0/go.mod h1:2JlltgoNkt4TW/z9V/IzDdFaMTM2JPIi26O1pF38GC8=
 github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
 github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
-github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
-github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
-golang.org/x/sys v0.0.0-20200116001909-b77594299b42/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200223170610-d5e6a3e2c0ae/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f h1:v4INt8xihDGvnrfjMDVXGxw9wrfxYyCjk0KbXjhR55s=
-golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
-gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+golang.org/x/sys v0.0.0-20220310020820-b874c991c1a5/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220818161305-2296e01440c6 h1:Sx/u41w+OwrInGdEckYmEuU5gHoGSL4QbDz3S9s6j4U=
+golang.org/x/sys v0.0.0-20220818161305-2296e01440c6/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=

repl/repl.go

@@ -1,37 +1,76 @@
+//go:build !wasm
+
 package repl
 
 import (
-	//"bufio"
 	"fmt"
 	"io"
+	"log"
+	"os"
 	"strings"
 
-	"github.com/abiosoft/ishell/v2"
+	"github.com/chzyer/readline"
+
 	"github.com/flipez/rocket-lang/ast"
 	"github.com/flipez/rocket-lang/evaluator"
 	"github.com/flipez/rocket-lang/lexer"
 	"github.com/flipez/rocket-lang/object"
 	"github.com/flipez/rocket-lang/parser"
 )
 
-const PROMPT = ">> "
-
 var buildVersion = "v0.10.0"
 var buildDate = "2021-12-27T21:13:44Z"
 
 func Start(in io.Reader, out io.Writer) {
-	shell := ishell.New()
-	shell.SetHomeHistoryPath(".rocket_history")
-	shell.SetOut(out)
-	shell.SetPrompt("🚀 > ")
+	homeDir, err := os.UserHomeDir()
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	rl, err := readline.NewEx(&readline.Config{
+		Prompt:                 "🚀 \033[31m»\033[0m ",
+		HistoryFile:            homeDir + "/.rocket_history",
+		InterruptPrompt:        "^C",
+		DisableAutoSaveHistory: true,
+	})
+
+	if err != nil {
+		panic(err)
+	}
+
+	defer rl.Close()
 
 	env := object.NewEnvironment()
 	imports := make(map[string]struct{})
+	var cmds []string
+
+	fmt.Println(SplashScreen())
 
-	shell.Println(SplashScreen())
-	shell.NotFound(func(ctx *ishell.Context) {
+	for {
+		//source, err := line.Prompt("🚀 > ")
+		line, err := rl.Readline()
 
-		l := lexer.New(strings.Join(ctx.RawArgs, " "))
+		if err != nil {
+			break
+		}
+
+		line = strings.TrimSpace(line)
+		if len(line) == 0 {
+			continue
+		}
+
+		cmds = append(cmds, line)
+
+		//if !strings.HasSuffix(line, ";") {
+		//	rl.SetPrompt("🚀 \033[31m»»»\033[0m ")
+		//	continue
+		//}
+
+		cmd := strings.Join(cmds, " ")
+		rl.SetPrompt("🚀 \033[31m»\033[0m ")
+		rl.SaveHistory(cmd)
+
+		l := lexer.New(cmd)
 		p := parser.New(l, imports)
 
 		object.AddEvaluator(evaluator.Eval)
@@ -40,17 +79,15 @@ func Start(in io.Reader, out io.Writer) {
 
 		program, imports = p.ParseProgram()
 		if len(p.Errors()) > 0 {
-			printParserErrors(ctx, p.Errors())
+			printParserErrors(p.Errors())
 			return
 		}
 
 		evaluated := evaluator.Eval(program, env)
 		if evaluated != nil {
-			ctx.Println("=> " + evaluated.Inspect())
+			fmt.Println("❌ " + evaluated.Inspect())
 		}
-	})
-
-	shell.Run()
+	}
 }
 
 const ROCKET = `
@@ -70,10 +107,10 @@ func SplashVersion() string {
 	return fmt.Sprintf("rocket-lang version %s (%s)\n", buildVersion, buildDate)
 }
 
-func printParserErrors(ctx *ishell.Context, errors []string) {
-	ctx.Println("🔥 Great, you broke it!")
-	ctx.Println(" parser errors:")
+func printParserErrors(errors []string) {
+	fmt.Println("🔥 Great, you broke it!")
+	fmt.Println(" parser errors:")
 	for _, msg := range errors {
-		ctx.Printf("\t %s\n", msg)
+		fmt.Printf("\t %s\n", msg)
 	}
 }

repl/repl_wasm.go

@@ -0,0 +1,17 @@
+//go:build wasm
+
+package repl
+
+import (
+	"fmt"
+	"io"
+)
+
+var buildVersion = "v0.10.0"
+var buildDate = "2021-12-27T21:13:44Z"
+
+func Start(in io.Reader, out io.Writer) {}
+
+func SplashVersion() string {
+	return fmt.Sprintf("rocket-lang version %s (%s)\n", buildVersion, buildDate)
+}

utilities/utilities.go

@@ -2,33 +2,13 @@ package utilities
 
 import (
 	"fmt"
-	"log"
 	"os"
 	"path/filepath"
-	"strings"
+	"sync"
 )
 
 var SearchPaths []string
-
-func init() {
-	cwd, err := os.Getwd()
-
-	if err != nil {
-		log.Fatalf("error getting cwd: %s", err)
-	}
-
-	if e := os.Getenv("ROCKETLANGPATH"); e != "" {
-		tokens := strings.Split(e, ":")
-
-		for _, token := range tokens {
-			if err := AddPath(token); err != nil {
-				log.Fatalf("error adding token: %s", err)
-			}
-		}
-	} else {
-		SearchPaths = append(SearchPaths, cwd)
-	}
-}
+var once sync.Once
 
 func AddPath(path string) error {
 	path = os.ExpandEnv(filepath.Clean(path))
@@ -50,6 +30,8 @@ func Exists(path string) bool {
 }
 
 func FindModule(name string) string {
+	once.Do(initSearchPaths)
+
 	basename := fmt.Sprintf("%s.rl", name)
 
 	for _, p := range SearchPaths {

utilities/utilities_nowasm.go

@@ -0,0 +1,29 @@
+//go:build !wasm
+
+package utilities
+
+import (
+	"log"
+	"os"
+	"strings"
+)
+
+func initSearchPaths() {
+	cwd, err := os.Getwd()
+
+	if err != nil {
+		log.Printf("error getting cwd: %s", err)
+	}
+
+	if e := os.Getenv("ROCKETLANGPATH"); e != "" {
+		tokens := strings.Split(e, ":")
+
+		for _, token := range tokens {
+			if err := AddPath(token); err != nil {
+				log.Fatalf("error adding token: %s", err)
+			}
+		}
+	} else {
+		SearchPaths = append(SearchPaths, cwd)
+	}
+}

utilities/utilities_wasm.go

@@ -0,0 +1,5 @@
+//go:build wasm
+
+package utilities
+
+func initSearchPaths() {}

wasm/index.html

@@ -0,0 +1,112 @@
+<html>
+<head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+	  <title>🚀🇱🅰🆖 Playground</title>
+   <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.2.0/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-gH2yIJqKdNHPEq0n4Mqa/HGKIhSkIHeL5AyhkYV8i59U5AR6csBvApHHNl/vI1Bx" crossorigin="anonymous">
+</head>
+<body>
+	<div class="container py-4">
+		<header class="pb-3 mb-4 border-bottom">
+      <a href="/" class="d-flex align-items-center text-dark text-decoration-none">
+				<img src="https://rocket-lang.org/img/logo.png" height="56px" alt="RocketLang">
+        <h1>Playground</h1>
+      </a>
+    </header>
+
+    <div class="row align-items-md-stretch">
+      <div class="col-md-6">
+        <div class="h-100 p-5 bg-light border rounded-3">
+          <h2>Input</h2>
+					<hr />
+					<p>
+	          <textarea class="form-control" rows="10" id="input" disabled placeholder="Loading WebAssembly binary..."></textarea>
+					</p>
+					<pi class="float-end">
+          <button id="shareButton" class="btn btn-outline-primary" type="button">Share</button>
+          <button id="runButton" class="btn btn-outline-success" type="button">Run</button>
+					</p>
+        </div>
+      </div>
+      <div class="col-md-6">
+        <div class="h-100 p-5 text-bg-dark rounded-3">
+          <h2>Output</h2>
+					<hr />
+	        <pre id="output"></pre>
+        </div>
+      </div>
+    </div>
+
+    <footer class="pt-3 mt-4 text-muted border-top">
+			🚀🇱🅰🆖 Playground.
+			See <a href="https://rocket-lang.org">rocket-lang.org</a> for more information | &nbsp;
+			<a href="https://github.com/flipez/rocket-lang">
+				<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 45 16" width="45" height="16"><path fill-rule="evenodd" d="M18.53 12.03h-.02c.009 0 .015.01.024.011h.006l-.01-.01zm.004.011c-.093.001-.327.05-.574.05-.78 0-1.05-.36-1.05-.83V8.13h1.59c.09 0 .16-.08.16-.19v-1.7c0-.09-.08-.17-.16-.17h-1.59V3.96c0-.08-.05-.13-.14-.13h-2.16c-.09 0-.14.05-.14.13v2.17s-1.09.27-1.16.28c-.08.02-.13.09-.13.17v1.36c0 .11.08.19.17.19h1.11v3.28c0 2.44 1.7 2.69 2.86 2.69.53 0 1.17-.17 1.27-.22.06-.02.09-.09.09-.16v-1.5a.177.177 0 00-.146-.18zM42.23 9.84c0-1.81-.73-2.05-1.5-1.97-.6.04-1.08.34-1.08.34v3.52s.49.34 1.22.36c1.03.03 1.36-.34 1.36-2.25zm2.43-.16c0 3.43-1.11 4.41-3.05 4.41-1.64 0-2.52-.83-2.52-.83s-.04.46-.09.52c-.03.06-.08.08-.14.08h-1.48c-.1 0-.19-.08-.19-.17l.02-11.11c0-.09.08-.17.17-.17h2.13c.09 0 .17.08.17.17v3.77s.82-.53 2.02-.53l-.01-.02c1.2 0 2.97.45 2.97 3.88zm-8.72-3.61h-2.1c-.11 0-.17.08-.17.19v5.44s-.55.39-1.3.39-.97-.34-.97-1.09V6.25c0-.09-.08-.17-.17-.17h-2.14c-.09 0-.17.08-.17.17v5.11c0 2.2 1.23 2.75 2.92 2.75 1.39 0 2.52-.77 2.52-.77s.05.39.08.45c.02.05.09.09.16.09h1.34c.11 0 .17-.08.17-.17l.02-7.47c0-.09-.08-.17-.19-.17zm-23.7-.01h-2.13c-.09 0-.17.09-.17.2v7.34c0 .2.13.27.3.27h1.92c.2 0 .25-.09.25-.27V6.23c0-.09-.08-.17-.17-.17zm-1.05-3.38c-.77 0-1.38.61-1.38 1.38 0 .77.61 1.38 1.38 1.38.75 0 1.36-.61 1.36-1.38 0-.77-.61-1.38-1.36-1.38zm16.49-.25h-2.11c-.09 0-.17.08-.17.17v4.09h-3.31V2.6c0-.09-.08-.17-.17-.17h-2.13c-.09 0-.17.08-.17.17v11.11c0 .09.09.17.17.17h2.13c.09 0 .17-.08.17-.17V8.96h3.31l-.02 4.75c0 .09.08.17.17.17h2.13c.09 0 .17-.08.17-.17V2.6c0-.09-.08-.17-.17-.17zM8.81 7.35v5.74c0 .04-.01.11-.06.13 0 0-1.25.89-3.31.89-2.49 0-5.44-.78-5.44-5.92S2.58 1.99 5.1 2c2.18 0 3.06.49 3.2.58.04.05.06.09.06.14L7.94 4.5c0 .09-.09.2-.2.17-.36-.11-.9-.33-2.17-.33-1.47 0-3.05.42-3.05 3.73s1.5 3.7 2.58 3.7c.92 0 1.25-.11 1.25-.11v-2.3H4.88c-.11 0-.19-.08-.19-.17V7.35c0-.09.08-.17.19-.17h3.74c.11 0 .19.08.19.17z"></path></svg>
+			</a>.
+    </footer>
+
+</div>
+
+	<script src="wasm_exec.js"></script>
+	<script src="term.js"></script>
+    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.2.0/dist/js/bootstrap.bundle.min.js" integrity="sha384-A3rJD856KowSb7dwlZdYEkO39Gagi7vIsF0jrRAoQmDKKtQBHUuLZ9AsSv4jD4Xa" crossorigin="anonymous"></script>
+	<script>
+    const urlParams = new URLSearchParams(window.location.search);
+		let shareData = urlParams.get('share')
+		if (shareData) {
+		  window.input.value = atob(shareData)
+		}
+
+
+		this.shareButton.addEventListener('click',function(e) {
+      urlParams.set('share', btoa(window.input.value));
+      window.location.search = urlParams;
+		});
+
+
+    window.input.addEventListener('keydown', function(e) {
+      if (e.key == 'Tab') {
+        e.preventDefault();
+        var start = this.selectionStart;
+        var end = this.selectionEnd;
+
+        // set textarea value to: text before caret + tab + text after caret
+        this.value = this.value.substring(0, start) +
+          "\t" + this.value.substring(end);
+
+        // put caret at right position again
+        this.selectionStart =
+          this.selectionEnd = start + 1;
+      }
+    });
+
+
+		(function() {
+			if (!('WebAssembly' in window)) {
+				document.body.innerText = 'Sorry, you need a browser with WebAssembly support';
+				return;
+			}
+
+			set_output(window.output);
+
+			fetch('main.wasm').then(response => response.arrayBuffer()).then(function(bin) {
+				  this.runButton.addEventListener('click',function(e) {
+						window.output.innerText = ""
+
+					const go = new Go();
+					go.argv = ['rocket-lang', '-e', window.input.value];
+					go.exit = (code) => {
+						if (code > 0)
+							output.innerText += 'Exit ' + code + '\n';
+					};
+					WebAssembly.instantiate(bin, go.importObject).then((result) => {
+						go.run(result.instance);
+					});
+        })
+				window.input.placeholder = 'Ready!';
+				window.input.disabled = false;
+			});
+		})();
+	</script>
+</body>
+</html>