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-rw-r--r--crates/ra_syntax/src/ast.rs18
-rw-r--r--crates/ra_syntax/src/ast/generated.rs44
2 files changed, 60 insertions, 2 deletions
diff --git a/crates/ra_syntax/src/ast.rs b/crates/ra_syntax/src/ast.rs
index 00c60ebf3..ab3dd1b84 100644
--- a/crates/ra_syntax/src/ast.rs
+++ b/crates/ra_syntax/src/ast.rs
@@ -285,13 +285,27 @@ impl LetStmt {
285 } 285 }
286} 286}
287 287
288#[derive(Debug, Clone, PartialEq, Eq)]
289pub enum ElseBranchFlavor<'a> {
290 Block(&'a Block),
291 IfExpr(&'a IfExpr),
292}
293
288impl IfExpr { 294impl IfExpr {
289 pub fn then_branch(&self) -> Option<&Block> { 295 pub fn then_branch(&self) -> Option<&Block> {
290 self.blocks().nth(0) 296 self.blocks().nth(0)
291 } 297 }
292 pub fn else_branch(&self) -> Option<&Block> { 298 pub fn else_branch(&self) -> Option<ElseBranchFlavor> {
293 self.blocks().nth(1) 299 let res = match self.blocks().nth(1) {
300 Some(block) => ElseBranchFlavor::Block(block),
301 None => {
302 let elif: &IfExpr = child_opt(self)?;
303 ElseBranchFlavor::IfExpr(elif)
304 }
305 };
306 Some(res)
294 } 307 }
308
295 fn blocks(&self) -> AstChildren<Block> { 309 fn blocks(&self) -> AstChildren<Block> {
296 children(self) 310 children(self)
297 } 311 }
diff --git a/crates/ra_syntax/src/ast/generated.rs b/crates/ra_syntax/src/ast/generated.rs
index 3ace6533c..4f8723ae7 100644
--- a/crates/ra_syntax/src/ast/generated.rs
+++ b/crates/ra_syntax/src/ast/generated.rs
@@ -660,6 +660,50 @@ impl ToOwned for DynTraitType {
660 660
661impl DynTraitType {} 661impl DynTraitType {}
662 662
663// ElseBranch
664#[derive(Debug, PartialEq, Eq, Hash)]
665#[repr(transparent)]
666pub struct ElseBranch {
667 pub(crate) syntax: SyntaxNode,
668}
669unsafe impl TransparentNewType for ElseBranch {
670 type Repr = rowan::SyntaxNode<RaTypes>;
671}
672
673#[derive(Debug, Clone, Copy, PartialEq, Eq)]
674pub enum ElseBranchKind<'a> {
675 Block(&'a Block),
676 IfExpr(&'a IfExpr),
677}
678
679impl AstNode for ElseBranch {
680 fn cast(syntax: &SyntaxNode) -> Option<&Self> {
681 match syntax.kind() {
682 | BLOCK
683 | IF_EXPR => Some(ElseBranch::from_repr(syntax.into_repr())),
684 _ => None,
685 }
686 }
687 fn syntax(&self) -> &SyntaxNode { &self.syntax }
688}
689
690impl ToOwned for ElseBranch {
691 type Owned = TreeArc<ElseBranch>;
692 fn to_owned(&self) -> TreeArc<ElseBranch> { TreeArc::cast(self.syntax.to_owned()) }
693}
694
695impl ElseBranch {
696 pub fn kind(&self) -> ElseBranchKind {
697 match self.syntax.kind() {
698 BLOCK => ElseBranchKind::Block(Block::cast(&self.syntax).unwrap()),
699 IF_EXPR => ElseBranchKind::IfExpr(IfExpr::cast(&self.syntax).unwrap()),
700 _ => unreachable!(),
701 }
702 }
703}
704
705impl ElseBranch {}
706
663// EnumDef 707// EnumDef
664#[derive(Debug, PartialEq, Eq, Hash)] 708#[derive(Debug, PartialEq, Eq, Hash)]
665#[repr(transparent)] 709#[repr(transparent)]