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[#1083] Try block syntax

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This commit is contained in:
Andrey Tkachenko 2019-06-06 15:36:16 +04:00
parent b79e6294a6
commit 281c9eeaff
9 changed files with 125 additions and 2 deletions
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37
crates/ra_syntax/src/ast/generated.rs
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@ -713,6 +713,7 @@ pub enum ExprKind<'a> {
MethodCallExpr(&'a MethodCallExpr),
FieldExpr(&'a FieldExpr),
TryExpr(&'a TryExpr),
TryBlockExpr(&'a TryBlockExpr),
CastExpr(&'a CastExpr),
RefExpr(&'a RefExpr),
PrefixExpr(&'a PrefixExpr),
@ -826,6 +827,11 @@ impl<'a> From<&'a TryExpr> for &'a Expr {
Expr::cast(&n.syntax).unwrap()
}
}
impl<'a> From<&'a TryBlockExpr> for &'a Expr {
fn from(n: &'a TryBlockExpr) -> &'a Expr {
Expr::cast(&n.syntax).unwrap()
}
}
impl<'a> From<&'a CastExpr> for &'a Expr {
fn from(n: &'a CastExpr) -> &'a Expr {
Expr::cast(&n.syntax).unwrap()
@ -887,6 +893,7 @@ impl AstNode for Expr {
| METHOD_CALL_EXPR
| FIELD_EXPR
| TRY_EXPR
| TRY_BLOCK_EXPR
| CAST_EXPR
| REF_EXPR
| PREFIX_EXPR
@ -929,6 +936,7 @@ impl Expr {
METHOD_CALL_EXPR => ExprKind::MethodCallExpr(MethodCallExpr::cast(&self.syntax).unwrap()),
FIELD_EXPR => ExprKind::FieldExpr(FieldExpr::cast(&self.syntax).unwrap()),
TRY_EXPR => ExprKind::TryExpr(TryExpr::cast(&self.syntax).unwrap()),
TRY_BLOCK_EXPR => ExprKind::TryBlockExpr(TryBlockExpr::cast(&self.syntax).unwrap()),
CAST_EXPR => ExprKind::CastExpr(CastExpr::cast(&self.syntax).unwrap()),
REF_EXPR => ExprKind::RefExpr(RefExpr::cast(&self.syntax).unwrap()),
PREFIX_EXPR => ExprKind::PrefixExpr(PrefixExpr::cast(&self.syntax).unwrap()),
@ -3672,6 +3680,35 @@ impl TraitDef {
}
}
// TryBlockExpr
#[derive(Debug, PartialEq, Eq, Hash)]
#[repr(transparent)]
pub struct TryBlockExpr {
pub(crate) syntax: SyntaxNode,
}
unsafe impl TransparentNewType for TryBlockExpr {
type Repr = rowan::SyntaxNode;
}
impl AstNode for TryBlockExpr {
fn cast(syntax: &SyntaxNode) -> Option<&Self> {
match syntax.kind() {
TRY_BLOCK_EXPR => Some(TryBlockExpr::from_repr(syntax.into_repr())),
_ => None,
}
}
fn syntax(&self) -> &SyntaxNode { &self.syntax }
}
impl ToOwned for TryBlockExpr {
type Owned = TreeArc<TryBlockExpr>;
fn to_owned(&self) -> TreeArc<TryBlockExpr> { TreeArc::cast(self.syntax.to_owned()) }
}
impl ast::TryBlockBodyOwner for TryBlockExpr {}
impl TryBlockExpr {}
// TryExpr
#[derive(Debug, PartialEq, Eq, Hash)]
#[repr(transparent)]