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Failure to match "$..['']", "$..['ref']", but succeeds on $..ref #43

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This commit is contained in:
freestrings 2020-04-04 16:43:55 +09:00
parent 83a170eb08
commit a168c46c04
3 changed files with 114 additions and 1 deletions
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19
src/parser/mod.rs
View File

@ -812,6 +812,25 @@ mod parser_tests {
])
);
assert_eq!(
run("$.$a"),
Ok(vec![
ParseToken::Absolute,
ParseToken::In,
ParseToken::Key("$a".to_owned())
])
);
assert_eq!(
run("$.['$a']"),
Ok(vec![
ParseToken::Absolute,
ParseToken::Array,
ParseToken::Key("$a".to_owned()),
ParseToken::ArrayEof,
])
);
if run("$.").is_ok() {
panic!();
}

33
src/parser/tokenizer.rs
View File

@ -172,6 +172,37 @@ impl<'a> Tokenizer<'a> {
}
}
fn dolla(&mut self, pos: usize, ch: char) -> Result<Token, TokenError> {
let fun = |c: &char| match c {
&CH_DOT
| &CH_ASTERISK
| &CH_LARRAY
| &CH_RARRAY
| &CH_LPAREN
| &CH_RPAREN
| &CH_AT
| &CH_QUESTION
| &CH_COMMA
| &CH_SEMICOLON
| &CH_LITTLE
| &CH_GREATER
| &CH_EQUAL
| &CH_AMPERSAND
| &CH_PIPE
| &CH_EXCLAMATION
=> false,
_ => !c.is_whitespace(),
};
let (_, mut vec) = self.input.take_while(fun).map_err(to_token_error)?;
vec.insert(0, ch);
if vec.len() == 1 {
Ok(Token::Absolute(pos))
} else {
Ok(Token::Key(pos, vec))
}
}
fn quote(&mut self, ch: char) -> Result<String, TokenError> {
let (_, mut val) = self
.input
@ -309,7 +340,7 @@ impl<'a> Tokenizer<'a> {
pub fn next_token(&mut self) -> Result<Token, TokenError> {
let (pos, ch) = self.input.next_char().map_err(to_token_error)?;
match ch {
CH_DOLLA => Ok(Token::Absolute(pos)),
CH_DOLLA => self.dolla(pos, ch),
CH_DOT => Ok(Token::Dot(pos)),
CH_ASTERISK => Ok(Token::Asterisk(pos)),
CH_LARRAY => Ok(Token::OpenArray(pos)),

63
tests/paths.rs Normal file
View File

@ -0,0 +1,63 @@
#[macro_use]
extern crate serde_json;
use common::{select_and_then_compare, setup};
mod common;
#[test]
fn dolla_token_in_path() {
setup();
select_and_then_compare(
"$..$ref",
json!({
"Junk1": "This is a test to illustrate use of '$' in the attr for the expression $..['$ref'] ",
"$ref": "Match Root",
"Subset1":[
{"Junk2": "Data...",
"$ref": "Match Subset1"
}
],
"hierachy1":{
"hierachy2.1":{
"hierachy2.1.1":{ "$ref":"Match 2.1.1"},
"hierachy2.1.2":{ "ref":"Match 2.1.2"},
"hierachy2.1.3":{ "ref":"No Match 2.1.3"},
"hierachy2.1.4":{ "$ref":"Match 2.1.4"},
"hierachy2.1.5":{ "ref":"No Match 2.1.5"}
},
"hierachy2.2":{
"hierachy2.2.1":{ "ref":"No Match 2.2.1"},
"hierachy2.2.2":{ "$ref":"Match 2.2.2"},
"hierachy2.2.3":{ "ref":"No Match 2.2.3"},
"hierachy2.2.4":{ "ref":"No Match 2.2.5"},
"hierachy2.2.5":{ "$ref":"Match 2.2.5"}
},
"hierachy2.3":{
"hierachy2.3.1":{ "ref":"No Match 2.3.1"},
"hierachy2.3.2":{ "ref":"No Match 2.3.2"},
"hierachy2.3.3":{ "ref":"No Match 2.3.3"},
"hierachy2.3.4":{ "ref":"No Match 2.3.4"},
"hierachy2.3.5":{ "ref":"No Match 2.3.5"},
"hierachy2.3.6":{
"hierachy2.3.6.1":{ "$ref":"Match 2.3.6.1"},
"hierachy2.3.6.2":{ "ref":"No Match 2.3.6.2"},
"hierachy2.3.6.3":{ "ref":"No Match 2.3.6.3"},
"hierachy2.3.6.4":{ "ref":"No Match 2.3.6.4"},
"hierachy2.3.6.5":{ "ref":"No Match 2.3.6.5"}
}
}
}
}),
json!([
"Match Root",
"Match Subset1",
"Match 2.1.1",
"Match 2.1.4",
"Match 2.2.2",
"Match 2.2.5",
"Match 2.3.6.1"
]),
);
}