| 361 | use either::Either; |
| 362 | |
| 363 | fn query(input: &str) -> IResult<&str, Query> { |
| 364 | println!("Attempting to parse query"); |
| 365 | println!("Input: {:?}", input); |
| 366 | |
| 367 | // Define a parser for either patterns or conditions |
| 368 | let pattern_or_condition = alt(( |
| 369 | map(entity_pattern, |p| (p, None)), |
| 370 | map(relationship_pattern, |p| (p, None)), |
| 371 | map(condition, |c| (Pattern::Condition(c), None)), |
| 372 | )); |
| 373 | |
| 374 | // Parse a list of patterns and/or conditions |
| 375 | let (input, patterns_and_conditions) = |
| 376 | separated_list0(ws(char(',')), pattern_or_condition)(input)?; |
| 377 | |
| 378 | // Separate patterns and conditions from the combined list |
| 379 | let mut patterns = Vec::new(); |
| 380 | let mut conditions = Vec::new(); |
| 381 | |
| 382 | for (pattern, condition) in patterns_and_conditions { |
| 383 | if let Some(cond) = condition { |
| 384 | conditions.push(cond); |
| 385 | } else { |
| 386 | patterns.push(pattern); |
| 387 | } |
| 388 | } |
| 389 | println!("Parsed patterns: {:?}", patterns); |
| 390 | println!("Remaining input: {:?}", input); |
| 391 | |
| 392 | // Parse "get" keyword |
| 393 | let get_result = ws(tag("get"))(input); |
| 394 | println!("Parsing 'get': {:?}", get_result); |
| 395 | let (input, _) = get_result?; |
| 396 | println!("Matched 'get' keyword"); |
| 397 | println!("Remaining input: {:?}", input); |
| 398 | |
| 399 | // Parse get variables |
| 400 | let get_variables_result = separated_list1(ws(char(',')), variable)(input); |
| 401 | println!("Parsing get variables: {:?}", get_variables_result); |
| 402 | let (input, get_variables) = get_variables_result?; |
| 403 | println!("Parsed get variables: {:?}", get_variables); |
| 404 | println!("Remaining input: {:?}", input); |
| 405 | |
| 406 | // Parse semicolon |
| 407 | let semicolon_result = ws(char(';'))(input); |
| 408 | println!("Parsing semicolon: {:?}", semicolon_result); |
| 409 | let (input, _) = semicolon_result?; |
| 410 | println!("Matched semicolon"); |
| 411 | println!("Remaining input: {:?}", input); |
| 412 | |
| 413 | // Construct Query struct |
| 414 | let query = Query { |
| 415 | patterns, |
| 416 | conditions, |
| 417 | get_variables: get_variables.into_iter().map(|s| s.to_string()).collect(), |
| 418 | }; |
| 419 | println!("Constructed Query: {:?}", query); |
| 420 | |