74 lines
1.8 KiB
Rust
74 lines
1.8 KiB
Rust
use crate::syntax::content::{Lexeme, Parseable};
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#[derive(Debug, Clone, Eq, PartialEq)]
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pub struct Bold {
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open: bool,
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}
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impl Bold {
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pub const fn new(open: bool) -> Bold { Bold { open } }
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}
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impl Parseable for Bold {
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fn probe(lexeme: &Lexeme) -> bool { lexeme.text() == "*" }
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fn lex(_lexeme: &Lexeme) -> Bold {
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panic!("Attempt to lex a bold tag directly from a lexeme")
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}
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fn render(&self) -> String {
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if self.open {
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String::from("<strong>")
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} else {
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String::from("</strong>")
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}
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}
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fn flatten(&self) -> String { String::default() }
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}
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impl std::fmt::Display for Bold {
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fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
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let display_open_state = if self.open { "open" } else { "closed" };
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write!(f, "Bold [{display_open_state}]")
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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use crate::syntax::content::parser::Token;
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#[test]
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fn render() {
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let code_open = Bold::new(true);
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assert_eq!(code_open.render(), "<strong>");
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let code_closed = Bold::new(false);
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assert_eq!(code_closed.render(), "</strong>");
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}
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#[test]
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#[should_panic(
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expected = "Attempt to lex a bold tag directly from a lexeme"
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)]
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fn lex() { Bold::lex(&Lexeme::default()); }
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#[test]
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fn token_display() {
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let mut bold = Bold::new(true);
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assert_eq!(format!("{}", Token::Bold(bold.clone())), "Tk:Bold [open]");
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bold.open = false;
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assert_eq!(format!("{}", Token::Bold(bold)), "Tk:Bold [closed]");
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}
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#[test]
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fn flatten() {
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let bold = Bold::new(false);
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assert_eq!(bold.flatten(), "");
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let token = Token::Bold(bold);
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assert_eq!(token.flatten(), "");
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}
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}
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