protected virtual string GetDelimiter(BlockExpressionDelimiter delimiter)
{
return(delimiter switch
{
BlockExpressionDelimiter.Space => " ",
BlockExpressionDelimiter.Break => "\n",
BlockExpressionDelimiter.Terminator => ";",
_ => string.Empty,
});
public BlockExpression(BlockExpressionDelimiter delimiter, IEnumerable <IExpression> items)
{
this.Delimiter = delimiter;
if (items == null)
{
_items = new List <IExpression>();
}
else
{
_items = new List <IExpression>(items);
}
}
protected virtual string GetDelimiter(BlockExpressionDelimiter delimiter)
{
switch (delimiter)
{
case BlockExpressionDelimiter.Space:
return(" ");
case BlockExpressionDelimiter.Break:
return("\n");
case BlockExpressionDelimiter.Terminator:
return(";");
}
return(string.Empty);
}
/// <summary>
/// 创建一个块级表达式。
/// </summary>
/// <param name="delimiter">指定的块级表达式元素分割符。</param>
/// <returns>返回新建的块级表达式对象。</returns>
public static BlockExpression Block(BlockExpressionDelimiter delimiter = BlockExpressionDelimiter.None)
{
return(new BlockExpression(delimiter));
}
public BlockExpression(BlockExpressionDelimiter delimiter = BlockExpressionDelimiter.None)
{
this.Delimiter = delimiter;
_items = new List <IExpression>();
}
