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Update parser AST to support dbg as both a statment and expression

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Make `Expr::Dbg` node specific to dbg expressions, add `Expr::DbgStmt`
for dbg statements. Debug expressions don't have a continuation branch.
Support formatting both kinds of `Dbg` nodes.
This commit is contained in:
Elias Mulhall 2024-08-26 14:20:57 -04:00
parent a16f757164
commit 43d932df3b
8 changed files with 54 additions and 20 deletions
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21
crates/compiler/fmt/src/expr.rs
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@ -65,7 +65,8 @@ impl<'a> Formattable for Expr<'a> {
Expect(condition, continuation) => {
condition.is_multiline() || continuation.is_multiline()
}
Dbg(condition, _) => condition.is_multiline(),
Dbg(expr) => expr.is_multiline(),
DbgStmt(condition, _) => condition.is_multiline(),
LowLevelDbg(_, _, _) => unreachable!(
"LowLevelDbg should only exist after desugaring, not during formatting"
),
@ -453,8 +454,11 @@ impl<'a> Formattable for Expr<'a> {
Expect(condition, continuation) => {
fmt_expect(buf, condition, continuation, self.is_multiline(), indent);
}
Dbg(condition, continuation) => {
fmt_dbg(buf, condition, continuation, self.is_multiline(), indent);
Dbg(expr) => {
fmt_dbg_expr(buf, expr, self.is_multiline(), indent);
}
DbgStmt(condition, continuation) => {
fmt_dbg_stmt(buf, condition, continuation, self.is_multiline(), indent);
}
LowLevelDbg(_, _, _) => unreachable!(
"LowLevelDbg should only exist after desugaring, not during formatting"
@ -1018,7 +1022,16 @@ fn fmt_when<'a>(
}
}
fn fmt_dbg<'a>(
fn fmt_dbg_expr<'a>(buf: &mut Buf, expr: &'a Loc<Expr<'a>>, _: bool, indent: u16) {
buf.indent(indent);
buf.push_str("dbg");
buf.spaces(1);
expr.format(buf, indent);
}
fn fmt_dbg_stmt<'a>(
buf: &mut Buf,
condition: &'a Loc<Expr<'a>>,
continuation: &'a Loc<Expr<'a>>,