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Improve debug AST printing.

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This commit is contained in:
Stephen Chung 2021-04-13 15:52:45 +08:00
parent 5a0199f44f
commit 187dbe537f
1 changed files with 20 additions and 7 deletions
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27
src/ast.rs
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@ -1283,7 +1283,7 @@ pub struct CustomExpr {
/// # Volatile Data Structure
///
/// This type is volatile and may change.
#[derive(Debug, Clone, Hash)]
#[derive(Clone, Hash)]
pub struct BinaryExpr {
/// LHS expression.
pub lhs: Expr,
@ -1419,7 +1419,7 @@ impl FnCallHash {
/// # Volatile Data Structure
///
/// This type is volatile and may change.
#[derive(Debug, Clone, Default, Hash)]
#[derive(Clone, Default, Hash)]
pub struct FnCallExpr {
/// Pre-calculated hash.
pub hash: FnCallHash,
@ -1668,12 +1668,12 @@ impl fmt::Debug for Expr {
Self::Variable(i, pos, x) => {
f.write_str("Variable(")?;
match x.1 {
Some((_, ref namespace)) => write!(f, "{}::", namespace)?,
Some((_, ref namespace)) => write!(f, "{}", namespace)?,
_ => (),
}
write!(f, "{}", x.2)?;
match i.map_or_else(|| x.0, |n| NonZeroUsize::new(n.get() as usize)) {
Some(n) => write!(f, " [{}]", n)?,
Some(n) => write!(f, ", {}", n)?,
_ => (),
}
write!(f, ") @ {:?}", pos)
@ -1685,11 +1685,24 @@ impl fmt::Debug for Expr {
write!(f, " @ {:?}", x.pos)
}
Self::FnCall(x, pos) => {
f.debug_tuple("FnCall").field(x).finish()?;
let mut ff = f.debug_struct("FnCall");
if let Some(ref ns) = x.namespace {
ff.field("namespace", ns);
}
ff.field("name", &x.name)
.field("hash", &x.hash)
.field("args", &x.args);
if !x.constant_args.is_empty() {
ff.field("constant_args", &x.constant_args);
}
if x.capture {
ff.field("capture", &x.capture);
}
ff.finish()?;
write!(f, " @ {:?}", pos)
}
Self::Dot(x, pos) | Self::Index(x, pos) | Self::And(x, pos) | Self::Or(x, pos) => {
let op = match self {
let op_name = match self {
Self::Dot(_, _) => "Dot",
Self::Index(_, _) => "Index",
Self::And(_, _) => "And",
@ -1697,7 +1710,7 @@ impl fmt::Debug for Expr {
_ => unreachable!(),
};
f.debug_struct(op)
f.debug_struct(op_name)
.field("lhs", &x.lhs)
.field("rhs", &x.rhs)
.finish()?;