我在编写语法方面不是很有经验,但是假设我有这样的记录类型:(示例)
record # 1 source ages params A = 1 and b = 2 fields are A, B, C with values 1, 2, 3;
record # 2;
record # 3 source ages;
record # 4 params A = 1 and b = 2 fields are A, B, C with values 1, 2, 3;
record # 5 source ages fields are A, B, C with values 1, 2, 3;
record # 6 with values 1, 2, 3;
基本上:
- 必须以“记录编号”开头,并以分号结尾。
- 可能按以下顺序包含 0 或 1 个捕获:
- 源数据集
- 数据集参数
- 数据集中的字段
- 数据集中的值
这是我的语法,它不起作用:
--- 开始语法:
@start = record;
record = 'record' '#' numeric rest* ';';
rest = 'source' alphanumeric paramsAndOrFieldsAndOrWithValues*;
paramsAndOrFieldsAndOrWithValues = (paramsList)? (fieldsList)? (valuesList)?;
paramsList = 'params' alpha expr numeric ('and' alpha expr numeric)*;
fieldsList = 'fields' 'are' alpha (comma alpha)*;
valuesList = 'with' 'values' numeric (comma numeric)*;
alpha = Word;
numeric = Number;
alphanumeric = (alpha | numeric | '_' | '.');
comma = ',';
expr = '=';
--- 结束语法
@“ParseKit 的开发者”,你能帮帮我吗?
谢谢 :)