代入の構文解析を実�

SMILEBASIC/main.d

@@ -8,7 +8,7 @@ int main(string[] argv)
         writeln(parser.calc());
     }
 
-    auto parser = new Parser("PRINT 1+1,2+3;10-5,A");
+    auto parser = new Parser("A=1\nPRINT 1+1,2+3;10-5,A");
     auto vm = parser.compile();
     vm.run();
     readln();

SMILEBASIC/node.d

@@ -160,3 +160,14 @@ class Print : Statement
         args ~= PrintArgument(PrintArgumentType.Line);
     }
 }
+class Assign : Statement
+{
+    wstring name;
+    Expression expr;
+    this(wstring name, Expression expr)
+    {
+        this.type = NodeType.Assign;
+        this.name = name;
+        this.expr = expr;
+    }
+}

SMILEBASIC/parser.d

@@ -31,6 +31,8 @@ class Lexical
         table[';'] = TokenType.Semicolon;
         table['\r'] = TokenType.NewLine;
         table['\n'] = TokenType.NewLine;
+        table['?'] = TokenType.Print;
+        table['='] = TokenType.Assign;
         reserved["OR"] = TokenType.Or;
         reserved["AND"] = TokenType.And;
         reserved["XOR"] = TokenType.Xor;
@@ -292,11 +294,43 @@ class Parser
         switch(token.type)
         {
             case TokenType.Print:
+                return print();
+            case TokenType.Iden:
+                {
+                    wstring name = token.value.stringValue;
+                    lex.popFront();
+                    token = lex.front();
+                    if(token.type == TokenType.Assign)
+                    {
+                        return assign(name);
+                    }
+                    //命令呼び出し
+                }
+                break;
+            case TokenType.Colon:
+            case TokenType.NewLine:
+                break;
+            default:
+                syntaxError();
+                break;
+        }
+        return null;
+    }
+    Assign assign(wstring name)
+    {
+        lex.popFront();
+        auto token = lex.front();//=の次
+        Expression expr = expression();
+        if(expr is null) return null;
+        auto a = new Assign(name, expr);
+        return a;
+    }
+    Print print()
     {
         auto print = new Print();
         bool addline = true;
         lex.popFront();
-                    token = lex.front();
+        auto token = lex.front();
         while(true)
         {
             //3号から厳密になって必ずいる
@@ -342,15 +376,6 @@ class Parser
         }
         return print;
     }
-            case TokenType.Colon:
-            case TokenType.NewLine:
-                break;
-            default:
-                syntaxError();
-                break;
-        }
-        return null;
-    }
     Expression expression()
     {
         Expression node = null;

SMILEBASIC/token.d

@@ -24,6 +24,7 @@ enum TokenType
     Colon,
     Semicolon,
     NewLine,
+    Assign,
 }
 
 struct Token