演算をdouble対応にした

SMILEBASIC/error.d

@@ -0,0 +1,38 @@
+module otya.smilebasic.error;
+import std.exception;
+import std.string;
+class SmileBasicError : Exception
+{
+    int errnum;
+    int errline;
+    int errprg;
+    this(int slot, int line, string message)
+    {
+        super(format("%s in %d:%d", message, slot, line));
+    }
+    this(int line, string message)
+    {
+        super(format("%s in %d", message, line));
+    }
+    this(string message)
+    {
+        super(message);
+    }
+}
+class TypeMismatch : SmileBasicError
+{
+    this()
+    {
+        this.errnum = 8;
+        super("Type mismatch");
+    }
+}
+class DuplicateVariable : SmileBasicError
+{
+    this()
+    {
+        this.errnum = 18;
+        super("Duplicate variable");
+    }
+}
+