add exit function in order to exit from current project

evaluator/array_test.go

@@ -381,6 +381,5 @@ func TestArrayMethodWrongUsage(t *testing.T) {
 				t.Errorf("erro expected \"%s\". Got: %s", tt.expectedErrorMessage, errObj.Message)
 			}
 		})
-
 	}
 }

go.mod

@@ -3,13 +3,22 @@ module ninja
 go 1.17
 
 require (
-	github.com/chzyer/readline v1.5.0
+	github.com/TheZoraiz/ascii-image-converter v1.12.0
 	github.com/fatih/color v1.13.0
 	github.com/spf13/pflag v1.0.5
 )
 
 require (
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/disintegration/imaging v1.6.2 // indirect
+	github.com/fogleman/gg v1.3.0 // indirect
+	github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0 // indirect
+	github.com/gookit/color v1.4.2 // indirect
+	github.com/makeworld-the-better-one/dither/v2 v2.2.0 // indirect
 	github.com/mattn/go-colorable v0.1.9 // indirect
 	github.com/mattn/go-isatty v0.0.14 // indirect
+	github.com/nathan-fiscaletti/consolesize-go v0.0.0-20210105204122-a87d9f614b9d // indirect
+	github.com/xo/terminfo v0.0.0-20210125001918-ca9a967f8778 // indirect
+	golang.org/x/image v0.0.0-20210628002857-a66eb6448b8d // indirect
 	golang.org/x/sys v0.0.0-20220310020820-b874c991c1a5 // indirect
 )

main.go

@@ -31,32 +31,36 @@ func main() {
 	flag.Parse()
 	args := flag.Args()
 
+	object.StandardInput = os.Stdin
+	object.StandardOutput = os.Stdout
+	object.Arguments = args
+	object.ExitFunction = os.Exit
+
 	if len(os.Args) == 1 {
-		runRepl(os.Stdin, os.Stdout, args)
+		runRepl(os.Stdin, os.Stdout)
 		return
 	}
 
 	if len(*exec) > 0 {
-		execCode(*exec, os.Stdout, args)
+		execCode(*exec, os.Stdout)
 		return
 	}
 
 	file, err := ioutil.ReadFile(os.Args[1])
 	if err == nil {
-		execCode(string(file), os.Stdout, args)
+		execCode(string(file), os.Stdout)
 		return
 	}
 }
 
-func runRepl(in io.Reader, out io.Writer, args []string) {
-	replProgram := repl.NewRepel(out, in, args)
+func runRepl(in io.Reader, out io.Writer) {
+	replProgram := repl.NewRepel(out, in)
 	replProgram.Version(version)
 
 	replProgram.Start()
 }
 
-func execCode(input string, writer io.Writer, args []string) {
-	object.Arguments = args
+func execCode(input string, writer io.Writer) {
 	env := object.NewEnvironment()
 	l := lexer.New(strings.NewReader(input))
 	p := parser.New(l)

repl/repl.go

@@ -2,6 +2,8 @@ package repl
 
 import (
 	"bufio"
+	"fmt"
+	"github.com/TheZoraiz/ascii-image-converter/aic_package"
 	"io"
 	"ninja/evaluator"
 	"ninja/lexer"
@@ -13,26 +15,9 @@ import (
 	color "github.com/fatih/color"
 )
 
-const PROMPT = ">> "
+const PROMPT = ">>> "
 
-const NINJA_LICENSE = " License 2022 - Built by Jonathan Fontes - Version: %s"
-
-const NINJA_SPLASH = `
-
-
-$$\   $$\ $$\                         
-$$$\  $$ |\__|                        
-$$$$\ $$ |$$\ $$$$$$$\  $$\  $$$$$$\  
-$$ $$\$$ |$$ |$$  __$$\ \__| \____$$\ 
-$$ \$$$$ |$$ |$$ |  $$ |$$\  $$$$$$$ |
-$$ |\$$$ |$$ |$$ |  $$ |$$ |$$  __$$ |
-$$ | \$$ |$$ |$$ |  $$ |$$ |\$$$$$$$ |
-\__|  \__|\__|\__|  \__|$$ | \_______|
-                  $$\   $$ |          
-                  \$$$$$$  |          
-                   \______/           
-
-`
+const NINJA_LICENSE = "Ninja Language - MIT LICENSE - Version: %s"
 
 type repl struct {
 	out     io.Writer
@@ -45,15 +30,11 @@ type repl struct {
 var colorName = map[string]*color.Color{
 	"normal":  color.New(color.FgWhite),
 	"program": color.New(color.FgWhite, color.Bold),
-	"brand":   color.New(color.FgCyan, color.Bold),
+	"brand":   color.New(color.FgHiBlue, color.Bold),
 	"error":   color.New(color.FgRed),
 }
 
-func NewRepel(out io.Writer, in io.Reader, args []string) *repl {
-	object.StandardInput = in
-	object.StandardOutput = out
-	object.Arguments = args
-
+func NewRepel(out io.Writer, in io.Reader) *repl {
 	scanner := bufio.NewScanner(in)
 	env := object.NewEnvironment()
 
@@ -79,11 +60,12 @@ func (r *repl) Start() {
 		panic(err)
 	}
 
-	r.printSplashLicense()
 	r.printSplashScreen()
+	r.printSplashLicense()
 
-	r.Output("normal", "Hi %s! This is Ninja Programming Language", user2.Username)
-	r.Output("normal", "Feel free to type in commands\n")
+	r.Output("program", "Hi %s! This is Ninja Programming Language\n", user2.Username)
+	r.Output("program", "Feel free to type in commands\n")
+	r.Output("program", "If found an error, open issue at github.com/gravataLonga/ninja\n")
 
 	for {
 		r.Output("normal", PROMPT)
@@ -122,7 +104,9 @@ func (r *repl) printSplashLicense() {
 }
 
 func (r *repl) printSplashScreen() {
-	r.Output("brand", NINJA_SPLASH)
+	fmt.Fprint(r.out, "\n\n")
+	fmt.Fprint(r.out, createSpashScreen())
+	fmt.Fprint(r.out, "\n\n")
 }
 
 func (r *repl) printParserErrors(errors []string) {
@@ -132,3 +116,22 @@ func (r *repl) printParserErrors(errors []string) {
 		r.Output("error", "\t\t"+msg+"\n")
 	}
 }
+
+func createSpashScreen() string {
+	filePath := "./docs/ninja-logo.png"
+
+	flags := aic_package.DefaultFlags()
+
+	flags.Width = 50
+	flags.Colored = true
+	flags.CustomMap = " .-+$*"
+	flags.SaveBackgroundColor = [4]int{50, 50, 50, 100}
+
+	// Conversion for an image
+	asciiArt, err := aic_package.Convert(filePath, flags)
+	if err != nil {
+		fmt.Println(err)
+	}
+
+	return fmt.Sprintf("%v\n", asciiArt)
+}

stdlib/exit.go

@@ -0,0 +1,24 @@
+package stdlib
+
+import "ninja/object"
+
+// ExitFunction
+
+// Exit execute exit function. Terminate following program
+func Exit(args ...object.Object) object.Object {
+
+	err := object.Check(
+		"exit", args,
+		object.ExactArgs(1),
+		object.WithTypes(object.INTEGER_OBJ),
+	)
+
+	if err != nil {
+		return object.NewError(err.Error())
+	}
+
+	intV, _ := args[0].(*object.Integer)
+
+	object.ExitFunction(int(intV.Value))
+	return object.NULL
+}

stdlib/stdlib.go

@@ -12,4 +12,5 @@ var Builtins = map[string]*object.Builtin{
 	"time":  object.NewBuiltin(Time),
 	"rand":  object.NewBuiltin(Rand),
 	"args":  object.NewBuiltin(Args),
+	"exit":  object.NewBuiltin(Exit),
 }