[gcc/devel/rust/master] ast: Add RangePatternBoundType and helpers

[gcc/devel/rust/master] ast: Add RangePatternBoundType and helpers

[Thomas Schwinge]

https://gcc.gnu.org/g:c31d0c5f78f038baa48cb68f26ce84ed31ce3732

commit c31d0c5f78f038baa48cb68f26ce84ed31ce3732
Author: David Faust <david.faust@oracle.com>
Date:   Thu May 12 15:46:43 2022 -0700

    ast: Add RangePatternBoundType and helpers

Diff:
---
 gcc/rust/ast/rust-pattern.h | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/gcc/rust/ast/rust-pattern.h b/gcc/rust/ast/rust-pattern.h
index a3193f79584..247af5dbe05 100644
--- a/gcc/rust/ast/rust-pattern.h
+++ b/gcc/rust/ast/rust-pattern.h
@@ -195,6 +195,13 @@ protected:
 class RangePatternBound
 {
 public:
+  enum RangePatternBoundType
+  {
+    LITERAL,
+    PATH,
+    QUALPATH
+  };
+
   virtual ~RangePatternBound () {}
 
   // Unique pointer custom clone function
@@ -208,6 +215,8 @@ public:
 
   virtual void accept_vis (ASTVisitor &vis) = 0;
 
+  virtual RangePatternBoundType get_bound_type () const = 0;
+
 protected:
   // pure virtual as RangePatternBound is abstract
   virtual RangePatternBound *clone_range_pattern_bound_impl () const = 0;
@@ -234,10 +243,19 @@ public:
 
   std::string as_string () const override;
 
+  Literal get_literal () const { return literal; }
+
+  bool get_has_minus () const { return has_minus; }
+
   Location get_locus () const { return locus; }
 
   void accept_vis (ASTVisitor &vis) override;
 
+  RangePatternBoundType get_bound_type () const override
+  {
+    return RangePatternBoundType::LITERAL;
+  }
+
 protected:
   /* Use covariance to implement clone function as returning this object rather
    * than base */
@@ -268,6 +286,11 @@ public:
   PathInExpression &get_path () { return path; }
   const PathInExpression &get_path () const { return path; }
 
+  RangePatternBoundType get_bound_type () const override
+  {
+    return RangePatternBoundType::PATH;
+  }
+
 protected:
   /* Use covariance to implement clone function as returning this object rather
    * than base */
@@ -300,6 +323,11 @@ public:
   QualifiedPathInExpression &get_qualified_path () { return path; }
   const QualifiedPathInExpression &get_qualified_path () const { return path; }
 
+  RangePatternBoundType get_bound_type () const override
+  {
+    return RangePatternBoundType::QUALPATH;
+  }
+
 protected:
   /* Use covariance to implement clone function as returning this object rather
    * than base */