add to access the property of object by "."

Author: taisukef

Parser.js

@@ -13,7 +13,8 @@ const reserved_none_blacketmode = [
 ];
 
 const isNumber = (c) => "0123456789".indexOf(c) >= 0;
-const isOperator = (c) => "+-*/%=!<>,.:".indexOf(c) >= 0;
+const isSymbol = (c) => "{}()[].:".indexOf(c) >= 0;
+const isOperator = (c) => "+-*/%=!<>,".indexOf(c) >= 0;
 const isWhite = (c) => " \t\n".indexOf(c) >= 0;
 
 export class Parser {
@@ -93,7 +94,7 @@ export class Parser {
           return { pos, type: "var", name: "print" };
         } else if (c == "#") {
           state = STATE_COMMENT;
-        } else if (c == "{" || c == "}" || c == "(" || c == ")" || c == "[" || c == "]") {
+        } else if (isSymbol(c)) {
           return { pos, type: c };
         } else if (c == '"') {
           state = STATE_STRING;
@@ -108,7 +109,7 @@ export class Parser {
           state = STATE_WORD;
         }
       } else if (state == STATE_WORD) {
-        if (c == " " || c == "\t" || c == "\n" || isOperator(c) || c == "(" || c == ")" || c == "[" || c == "]" || c === undefined) {
+        if (c == " " || c == "\t" || c == "\n" || isOperator(c) || isSymbol(c) || c === undefined) {
           this.p--;
           const w = res.join("");
           if (this.reserved.indexOf(w) >= 0) {
@@ -281,7 +282,7 @@ export class Parser {
         if (t2.type != "var") throw new Error("オブジェクトの定義には名前が必要です");
         const name = t2.name;
         const t4 = this.getToken();
-        if (t4.operator != ":") throw new Error("オブジェクトの定義は名前の後に : が必要です");
+        if (t4.type != ":") throw new Error("オブジェクトの定義は名前の後に : が必要です");
         const value = this.getExpression();
         properties.push({
           type: "Property",
@@ -449,14 +450,23 @@ export class Parser {
 
     const array = [];
     for (;;) {
-      if (op.type != "[") {
+      if (op.type != "[" && op.type != ".") {
         this.backToken(op);
         break;
       }
-      const idx = this.getExpression();
-      const op2 = this.getToken();
-      if (op2.type != "]") throw new Error("配列の要素指定が ] で囲われていません");
-      array.push(idx);
+      if (op.type == "[") {
+        const idx = this.getExpression();
+        const op2 = this.getToken();
+        if (op2.type != "]") throw new Error("配列の要素指定が ] で囲われていません");
+        array.push(idx);
+      } else {
+        const id = this.getToken();
+        if (id.type != "var") throw new Error("オブジェクトの要素指定が名前ではありません");
+        array.push({
+          type: "Identifier",
+          name: id.name,
+        });
+      }
       op = this.getToken();
     }
     if (array.length == 0) {

Runtime.js

@@ -116,7 +116,11 @@ export class Runtime {
           let ast = cmd.left;
           for (;;) {
             if (ast.type == "MemberExpression") {
-              idxes.unshift(await this.calcExpression(ast.property, scope));
+              if (ast.property.type == "Identifier") {
+                idxes.unshift(ast.property.name);
+              } else {
+                idxes.unshift(await this.calcExpression(ast.property, scope));
+              }
               ast = ast.object;
             } else if (ast.type == "Identifier") {
               const name = ast.name;
@@ -140,13 +144,15 @@ export class Runtime {
               } else {
                 const idx = idxes[0];
                 if (v[idx] === undefined) {
-                  v[idx] = [];
+                  //console.log("1", typeof idx == "number", idx)
+                  v[idx] = typeof idx == "number" ? [] : {};
                 }
                 let ret = v[idx];
                 for (let i = 1; i < idxes.length - 1; i++) {
                   const idx = idxes[i];
                   if (ret[idx] === undefined) {
-                    ret[idx] = [];
+                    //console.log("2", typeof idx == "number", idx)
+                    ret[idx] = typeof idx == "number" ? [] : {};
                   }
                   ret = ret[idx];
                 }
@@ -337,7 +343,11 @@ export class Runtime {
       const idxes = [];
       for (;;) {
         if (ast.type == "MemberExpression") {
-          idxes.unshift(await this.calcExpression(ast.property, scope));
+          if (ast.property.type == "Identifier") {
+            idxes.unshift(ast.property.name);
+          } else {
+            idxes.unshift(await this.calcExpression(ast.property, scope));
+          }
           ast = ast.object;
         } else if (ast.type == "Identifier") {
           const name = ast.name;

examples.csv

@@ -25,4 +25,4 @@ commontest2025-1_ja.dncl,23. common test 2025 1 (日本語変数)
 commontest2025-2.dncl,24. common test 2025 2
 commontest2025-2_ja.dncl,25. common test 2025 2 (日本語変数)
 import.dncl,26. import functions
-object.dncl,27. オブジェクトの生成
+object.dncl,27. オブジェクトの生成とアクセス

examples/object.dncl

@@ -1,2 +1,6 @@
-# 27. オブジェクトの生成
-a = { a: 3, b: "ABC" }
+# 27. オブジェクトの生成とアクセス
+a = { a: 15, b: "ABC" }
+a.d = [1, 2, 3, 4]
+a.d[0] = 100
+a.c = "xyz"
+print a.a, a["b"], a.c, a.d.length