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utils.rs
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/
utils.rs
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use crate::{
tokenizer::Tokenizer,
tokens::{Location, LocationData, Token},
};
pub fn separate(s: &str) -> (char, String) {
if s == "" {
return ('\0', String::new());
}
if s.len() == 1 {
return (s.chars().next().unwrap(), String::new());
}
return (s.chars().next().unwrap(), s[1..].to_string());
}
pub fn take_text_token_from_pool(t: &Tokenizer, strip: bool) -> Option<(Tokenizer, Token)> {
let pool = t.pool.clone().unwrap_or_default();
if &pool == "" {
return None;
}
if strip {
let mut space_count = 0;
for c in pool.chars() {
if c == ' ' {
space_count += 1;
} else {
break;
}
}
let t2 = Tokenizer {
column: Some(t.column.unwrap_or_default()),
token_start_column: Some(t.token_start_column.unwrap_or_default() + space_count),
..Default::default()
};
return Some((
t.merge(&t2),
Token::Text(
pool.trim().to_string(),
Location {
start: LocationData {
line: t.token_start_line.unwrap_or_default(),
character: t.token_start_column.unwrap_or_default() + space_count,
},
end: LocationData {
line: t.line.unwrap_or_default(),
character: t.column.unwrap_or_default(),
},
},
),
));
}
let t2 = Tokenizer {
token_start_column: Some(t.column.unwrap_or_default()),
..Default::default()
};
return Some((
t.merge(&t2),
Token::Text(
pool.to_string(),
Location {
start: LocationData {
line: t.token_start_line.unwrap_or_default(),
character: t.token_start_column.unwrap_or_default(),
},
end: LocationData {
line: t.line.unwrap_or_default(),
character: t.column.unwrap_or_default(),
},
},
),
));
}
pub fn update_tokens(t: &Tokenizer, strip: bool) -> Vec<Token> {
let mut tokens = t.tokens.clone().unwrap_or_default();
let pool = t.pool.clone().unwrap_or_default();
if &pool == "" {
return tokens;
}
if strip {
let mut space_count = 0;
for c in pool.chars() {
if c == ' ' {
space_count += 1;
} else {
break;
}
}
tokens.push(Token::Text(
pool.trim().to_string(),
Location {
start: LocationData {
line: t.token_start_line.unwrap_or_default() + space_count,
character: t.token_start_column.unwrap_or_default(),
},
end: LocationData {
line: t.line.unwrap_or_default(),
character: t.column.unwrap_or_default(),
},
},
));
return tokens;
}
tokens.push(Token::Text(
pool.to_string(),
Location {
start: LocationData {
line: t.token_start_line.unwrap_or_default(),
character: t.token_start_column.unwrap_or_default(),
},
end: LocationData {
line: t.line.unwrap_or_default(),
character: t.column.unwrap_or_default(),
},
},
));
tokens
}