REPL

.goreleaser.yml

@@ -20,6 +20,13 @@ builds:
     goarm:
       - 6
       - 7
+    ignore:
+      - goos: windows
+        goarch: arm
+        goarm: 6
+      - goos: windows
+        goarch: arm
+        goarm: 7
 
 checksum:
   name_template: 'checksums.txt'

.vscode/launch.json

@@ -10,7 +10,7 @@
             "request": "launch",
             "mode": "debug",
             "program": "main.go",
-            "args": ["-f", "test/os.lk"]
+            "args": ["-f", "run", "test/re.lk"]
         }
     ]
 }

README.md

@@ -65,4 +65,5 @@ if http.listen(':8080', handle) != nil {
   - [x] 自动添加`range` ( `paris` )
 - CLI
   - [x] 利用HASH，文件无变化不编译
-  - [x] 支持传入参数
+  - [x] 支持传入参数
+  - [x] REPL

compiler/parser/parser.go

@@ -5,12 +5,15 @@ import (
 
 	. "git.lolli.tech/lollipopkit/go-lang-lk/compiler/ast"
 	. "git.lolli.tech/lollipopkit/go-lang-lk/compiler/lexer"
+	"git.lolli.tech/lollipopkit/go-lang-lk/consts"
 )
 
+
+
 var (
 	replaceRules = map[string]*regexp.Regexp{
 		// for in：自动添加range
-		"for $1 in range($3) {": regexp.MustCompile(`for +(\S+(, {0,1}\S+)) +in +(\S*) *\{`),
+		"for $1 in range($3) {": consts.ForInRe,
 	}
 )
 

consts/re.go

@@ -0,0 +1,25 @@
+package consts
+
+import "regexp"
+
+const (
+	ForInReStr = `for +(\S+(, *\S+)*) +in +(\S+) *\{`
+	FnReStr = `fn +(\S*)\((\S+(, *\S+)*)\) *\{`
+	WhileReStr = `while +(\S+) *\{`
+	IfReStr = `if +(\S+) *\{`
+	ElseIfReStr = `elif +(\S+) *\{`
+	ElseReStr = `else *\{`
+)
+
+var (
+	ForInRe = _re(ForInReStr)
+	FnRe = _re(FnReStr)
+	WhileRe = _re(WhileReStr)
+	IfRe = _re(IfReStr)
+	ElseIfRe = _re(ElseIfReStr)
+	ElseRe = _re(ElseReStr)
+)
+
+func _re(s string) *regexp.Regexp {
+	return regexp.MustCompile(s)
+}

main.go

@@ -15,8 +15,21 @@ import (
 func main() {
 	force := flag.Bool("f", false, "force to re-compile")
 	flag.Parse()
+	args := flag.Args()
+	if len(args) == 0 {
+		println("Usage: \n	lang-lk repl\n	lang-lk [options] run <file>")
+		return
+	}
+
+	switch args[0] {
+	case "repl":
+		repl()
+		return
+	case "run":
+		break
+	}
 
-	file := flag.Arg(0)
+	file := args[1]
 	if file == "" {
 		panic("no input file")
 	}

repl.go

@@ -0,0 +1,35 @@
+package main
+
+import (
+	"bufio"
+	"os"
+
+	"git.lolli.tech/lollipopkit/go-lang-lk/consts"
+	"git.lolli.tech/lollipopkit/go-lang-lk/state"
+)
+
+func repl() {
+	ls := state.New()
+	ls.OpenLibs()
+	println(` 
+ _     _      ____            _ 
+| |   | | __ |  _ \ ___ _ __ | |
+| |   | |/ / | |_) / _ \ '_ \| |
+| |___|   <  |  _ <  __/ |_) | |
+|_____|_|\_\ |_| \_\___| .__/|_|
+                       |_|      `)
+	println("	    v" + consts.VERSION)
+
+	for {
+		os.Stdout.WriteString("> ")
+		ls.LoadString(readline());
+
+		ls.PCall(0, -1, 0);
+	}
+}
+
+func readline() string {
+	inputReader := bufio.NewReader(os.Stdin)
+    input, _ := inputReader.ReadString('\n')
+	return input
+}

test/basic.lk

@@ -13,9 +13,6 @@ long comment
 shy long = '''
 abc
 '''
-goto SKIP
-error('never reached')
-::SKIP::
 
 if #long >= 0 and '' {
     print("hello", #long)