Method add_match

cranelift/srcgen/src/lib.rs:196–232

Add a match expression.

(&mut self, m: Match)

    /// Add a match expression.
    pub fn add_match(&mut self, m: Match) {
        assert!(matches!(self.lang, Language::Rust));
        fmtln!(self, "match {} {{", m.expr);
        self.indent(|fmt| {
            for (&(ref fields, ref body), ref names) in m.arms.iter() {
                // name { fields } | name { fields } => { body }
                let conditions = names
                    .iter()
                    .map(|name| {
                        if !fields.is_empty() {
                            format!("{} {{ {} }}", name, fields.join(", "))
                        } else {
                            name.clone()
                        }
                    })
                    .collect::<Vec<_>>()
                    .join(" |\n")
                    + " => {";

                fmt.multi_line(&conditions);
                fmt.indent(|fmt| {
                    fmt.line(body);
                });
                fmt.line("}");
            }

            // Make sure to include the catch all clause last.
            if let Some(body) = m.catch_all {
                fmt.line("_ => {");
                fmt.indent(|fmt| {
                    fmt.line(body);
                });
                fmt.line("}");
            }
        });
        self.line("}");
    }

    /// Write `self.lines` to a file.
    pub fn write(