Eliminate whitespace validation via compound-atomic($) and not-atomics(!) in pest (#100)

thank for the pr

Author: thehiddenwaffle

rfc9535/test_suite/results.csv

@@ -9,3 +9,4 @@ Total; Passed; Failed; Date
 687; 652; 0; 2025-03-18 22:56:39
 687; 652; 0; 2025-03-18 22:57:01
 687; 652; 0; 2025-05-13 21:21:59
+687; 652; 0; 2025-05-19 15:05:31

src/parser.rs

@@ -27,18 +27,12 @@ pub type Parsed<T> = Result<T, JsonPathError>;
 ///
 /// Returns a variant of [crate::JsonPathParserError] if the parsing operation failed.
 pub fn parse_json_path(jp_str: &str) -> Parsed<JpQuery> {
-    if jp_str != jp_str.trim() {
-        Err(JsonPathError::InvalidJsonPath(
-            "Leading or trailing whitespaces".to_string(),
-        ))
-    } else {
-        JSPathParser::parse(Rule::main, jp_str)
-            .map_err(Box::new)?
-            .next()
-            .ok_or(JsonPathError::UnexpectedPestOutput)
-            .and_then(next_down)
-            .and_then(jp_query)
-    }
+    JSPathParser::parse(Rule::main, jp_str)
+        .map_err(Box::new)?
+        .next()
+        .ok_or(JsonPathError::UnexpectedPestOutput)
+        .and_then(next_down)
+        .and_then(jp_query)
 }
 
 pub fn jp_query(rule: Pair<Rule>) -> Parsed<JpQuery> {

src/parser/grammar/json_path_9535.pest

@@ -1,6 +1,6 @@
-main = { SOI ~ jp_query ~ EOI }
+main = ${ SOI ~ jp_query ~ EOI }
 jp_query = {root ~ segments}
-segments = {(S ~ segment)*}
+segments = !{(S ~ segment)*}
 segment = { child_segment | descendant_segment }
 child_segment = { bracketed_selection | ("." ~ (wildcard_selector | member_name_shorthand)) }
 bracketed_selection = { "[" ~ S ~ selector ~ (S ~ "," ~ S ~ selector)* ~ S ~ "]" }