support multi-line comment

#14

DNCL3.js

@@ -58,8 +58,11 @@ export class DNCL3 {
     const STATE_WORD = 1;
     const STATE_STRING = 2;
     const STATE_COMMENT = 3;
-    const STATE_NUMBER = 4;
-    const STATE_OPERATOR = 5;
+    const STATE_COMMENT_SINGLE = 4;
+    const STATE_COMMENT_MULTI = 5;
+    const STATE_COMMENT_MULTI2 = 6;
+    const STATE_NUMBER = 7;
+    const STATE_OPERATOR = 8;
     let state = STATE_FIRST;
     const res = [];
     const pos = this.p;
@@ -110,11 +113,28 @@ export class DNCL3 {
           res.push(c);
         }
       } else if (state == STATE_COMMENT) {
+        if (c == "=") {
+          state = STATE_COMMENT_MULTI;
+        } else {
+          this.p--;
+          state = STATE_COMMENT_SINGLE;
+        }
+      } else if (state == STATE_COMMENT_SINGLE) {
         if (c == "\n") {
           return { pos, type: "eol" };
         } else if (c === undefined) {
           return { pos, type: "eof" };
         }
+      } else if (state == STATE_COMMENT_MULTI) {
+        if (c == "=") {
+          state = STATE_COMMENT_MULTI2;
+        }
+      } else if (state == STATE_COMMENT_MULTI2) {
+        if (c == "#") {
+          return { pos, type: "eol" };
+        } else {
+          state = STATE_COMMENT_MULTI;
+        }
       } else if (state == STATE_NUMBER) {
         if (isNumber(c) || c == ".") {
           res.push(c);

README.md

@@ -10,7 +10,7 @@ deno run -A DNCL3.example.js bmi
 - ブラウザで動作するテスト環境 [dncl2js](https://code4fukui.github.io/DNCL3/dncl2js.html)
 
 ※ TODO: 下記は未実装です
-- [二次元以上の配列](https://github.com/code4fukui/DNCL3/issues/2) / [配列のすべてを初期化](https://github.com/code4fukui/DNCL3/issues/3) / [input](https://github.com/code4fukui/DNCL3/issues/7) / [変数のスコープ](https://github.com/code4fukui/DNCL3/issues/13) / [複数行コメント](https://github.com/code4fukui/DNCL3/issues/14)
+- [二次元以上の配列](https://github.com/code4fukui/DNCL3/issues/2) / [配列のすべてを初期化](https://github.com/code4fukui/DNCL3/issues/3) / [input](https://github.com/code4fukui/DNCL3/issues/7) / [変数のスコープ](https://github.com/code4fukui/DNCL3/issues/13)
 
 ## 1 変数と値
 
@@ -380,6 +380,15 @@ atai = 乱数() # 0以上1未満のランダムな小数をataiに代入する
 ```
 - ※1行内において#以降の記述は処理の対象とならない
 
+```
+#=
+複数行に渡る
+コメントの記述方法
+=#
+```
+
+- #= から =# までの記述は処理の対象とならない
+
 ## reference
 
 - [共通テスト手順記述標準言語 (DNCL) の説明 独立行政法人大学入試センター 2022年1月](https://www.dnc.ac.jp/albums/abm.php?d=67&f=abm00000819.pdf&n=R4_%E5%85%B1%E9%80%9A%E3%83%86%E3%82%B9%E3%83%88%E6%89%8B%E9%A0%86%E8%A8%98%E8%BF%B0%E6%A8%99%E6%BA%96%E8%A8%80%E8%AA%9E%EF%BC%88DNCL%EF%BC%89%E3%81%AE%E8%AA%AC%E6%98%8E.pdf)

dncl2js.html

@@ -113,9 +113,11 @@ <h1>DNCL3 → AST → like JavaScript → output</h1>
 //const fn = "geo3x3";
 //const fn = "varja";
 //const fn = "funcja";
-const fn = "dowhile";
+//const fn = "dowhile";
+const fn = "comment";
 
-const firstprog = await (await fetch("examples/" + fn + ".dncl")).text();
+const fn0 = location.hash.substring(1) || fn;
+const firstprog = await (await fetch("examples/" + fn0 + ".dncl")).text();
 
 prog.setValue(firstprog);
 onchange();

examples/comment.dncl

@@ -0,0 +1,5 @@
+a = 10 #=
+複数行に渡る
+コメント
+=#
+print a