university/developing-compilers
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better syn tree display

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This commit is contained in:
Lionarius
2024-10-24 09:27:17 +03:00
parent d13dfe82ae
commit 552dec9401
1 changed files with 2 additions and 2 deletions
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4
src/main.rs
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@@ -10,7 +10,7 @@ mod parse;
mod symbols; mod symbols;
fn write_expr(expr: &Expr, writer: &mut impl Write, prefix: &str, is_last: bool) -> io::Result<()> { fn write_expr(expr: &Expr, writer: &mut impl Write, prefix: &str, is_last: bool) -> io::Result<()> {
let branch = if is_last { "+--" } else { "|--" }; let branch = if is_last { "└──" } else { "├──" };
match expr { match expr {
Expr::Int { value, .. } => writeln!(writer, "{}{}<{}>", prefix, branch, value), Expr::Int { value, .. } => writeln!(writer, "{}{}<{}>", prefix, branch, value),
@@ -22,7 +22,7 @@ fn write_expr(expr: &Expr, writer: &mut impl Write, prefix: &str, is_last: bool)
let new_prefix = if is_last { let new_prefix = if is_last {
format!("{} ", prefix) format!("{} ", prefix)
} else { } else {
format!("{}| ", prefix) format!("{}│ ", prefix)
}; };
write_expr(lhs, writer, &new_prefix, false)?; write_expr(lhs, writer, &new_prefix, false)?;