gccrs: Add AST::AltPattern class

gcc/rust/ChangeLog:

	* ast/rust-ast-dump.cc
	(Dump::visit): Add AltPattern visitor.
	* ast/rust-ast-dump.h:
	(Dump::visit): Add AltPattern visitor.
	* ast/rust-ast-full-decls.h
	(class AltPattern): Add declaration.
	* ast/rust-ast-visitor.h:
	(ASTVisitor::visit): Add AltPattern visitor.
	* ast/rust-ast.cc
	(AltPattern::as_string): Add definition.
	(AltPattern::accept_vis): Add definition.
	* ast/rust-pattern.h
	(class AltPattern): Add declaration.
	* checks/errors/rust-feature-gate.h:
	(FeatureGate::visit) Add AltPattern visitor
	* expand/rust-attribute-visitor.cc
	(AttrVisitor::visit): Add AltPattern visitor.
	* expand/rust-attribute-visitor.h:
	(AttrVisitor::visit): Add AltPattern visitor.
	* hir/rust-ast-lower-base.cc
	(ASTLoweringBase::visit): Add AltPattern visitor.
	* hir/rust-ast-lower-base.h:
	(ASTLoweringBase::visit): Add AltPattern visitor.
	* resolve/rust-ast-resolve-base.cc
	(ResolverBase::visit): Add AltPattern visitor.
	* resolve/rust-ast-resolve-base.h:
	(ResolverBase::visit): Add AltPattern visitor.
	* resolve/rust-early-name-resolver.cc
	(EarlyNameResolver::visit): Add AltPattern visitor.
	* resolve/rust-early-name-resolver.h:
	(EarlyNameResolver::visit): Add AltPattern visitor.
	* util/rust-attributes.cc
	(AttributeChecker::visit): Add AltPattern visitor.
	* util/rust-attributes.h:
	(AttributeChecker::visit): Add AltPattern visitor.

Signed-off-by: Owen Avery <powerboat9.gamer@gmail.com>

4 files changed, 13 insertions, 0 deletions

diff --git a/gcc/rust/resolve/rust-ast-resolve-base.cc b/gcc/rust/resolve/rust-ast-resolve-base.cc
index 0a78d26..5b3f4a0 100644
--- a/gcc/rust/resolve/rust-ast-resolve-base.cc
+++ b/gcc/rust/resolve/rust-ast-resolve-base.cc
@@ -583,6 +583,10 @@ ResolverBase::visit (AST::SlicePattern &)
 {}
 
 void
+ResolverBase::visit (AST::AltPattern &)
+{}
+
+void
 ResolverBase::visit (AST::EmptyStmt &)
 {}
 
diff --git a/gcc/rust/resolve/rust-ast-resolve-base.h b/gcc/rust/resolve/rust-ast-resolve-base.h
index 9d88f8f..aab1324 100644
--- a/gcc/rust/resolve/rust-ast-resolve-base.h
+++ b/gcc/rust/resolve/rust-ast-resolve-base.h
@@ -178,6 +178,7 @@ public:
   void visit (AST::TuplePattern &);
   void visit (AST::GroupedPattern &);
   void visit (AST::SlicePattern &);
+  void visit (AST::AltPattern &);
 
   void visit (AST::EmptyStmt &);
   void visit (AST::LetStmt &);
diff --git a/gcc/rust/resolve/rust-early-name-resolver.cc b/gcc/rust/resolve/rust-early-name-resolver.cc
index 5f11ae2..f5054f9 100644
--- a/gcc/rust/resolve/rust-early-name-resolver.cc
+++ b/gcc/rust/resolve/rust-early-name-resolver.cc
@@ -1053,6 +1053,13 @@ EarlyNameResolver::visit (AST::SlicePattern &pattern)
 }
 
 void
+EarlyNameResolver::visit (AST::AltPattern &pattern)
+{
+  for (auto &alt : pattern.get_alts ())
+    alt->accept_vis (*this);
+}
+
+void
 EarlyNameResolver::visit (AST::EmptyStmt &)
 {}
 
diff --git a/gcc/rust/resolve/rust-early-name-resolver.h b/gcc/rust/resolve/rust-early-name-resolver.h
index 21b92e9..84ee518 100644
--- a/gcc/rust/resolve/rust-early-name-resolver.h
+++ b/gcc/rust/resolve/rust-early-name-resolver.h
@@ -249,6 +249,7 @@ private:
   virtual void visit (AST::TuplePattern &pattern);
   virtual void visit (AST::GroupedPattern &pattern);
   virtual void visit (AST::SlicePattern &pattern);
+  virtual void visit (AST::AltPattern &pattern);
   virtual void visit (AST::EmptyStmt &stmt);
   virtual void visit (AST::LetStmt &stmt);
   virtual void visit (AST::ExprStmtWithoutBlock &stmt);