46 lines
1.1 KiB
Rust
46 lines
1.1 KiB
Rust
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/* lexer/src/named_char.rs
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* Eryn Wells <eryn@erynwells.me>
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*/
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use std::collections::HashSet;
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use sibiltypes::Char;
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const ALARM: &'static str = "alarm";
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const BACKSPACE: &'static str = "backspace";
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const DELETE: &'static str = "delete";
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const ESCAPE: &'static str = "escape";
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const NEWLINE: &'static str = "newline";
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const NULL: &'static str = "null";
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const RETURN: &'static str = "return";
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const SPACE: &'static str = "space";
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const TAB: &'static str = "tab";
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pub fn set() -> HashSet<&'static str> {
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let mut set: HashSet<&'static str> = HashSet::new();
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set.insert(ALARM);
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set.insert(BACKSPACE);
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set.insert(DELETE);
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set.insert(ESCAPE);
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set.insert(NEWLINE);
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set.insert(NULL);
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set.insert(RETURN);
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set.insert(SPACE);
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set.insert(TAB);
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set
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}
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pub fn char_named_by(named: &str) -> Char {
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Char(match named {
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ALARM => '\x07',
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BACKSPACE => '\x08',
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DELETE => '\x7F',
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ESCAPE => '\x1B',
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NEWLINE => '\n',
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NULL => '\0',
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RETURN => '\r',
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SPACE => ' ',
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TAB => '\t',
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_ => panic!("char_named_by called with invalid named char string")
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})
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}
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