resolve: Add ResolveExpr::funny_error

...and thread it through the constructors and the ResolveExpr::go ()
method.

This will be used for implementing the "break rust" Easter egg.

gcc/rust/ChangeLog:
	* resolve/rust-ast-resolve-expr.h,
	resolve/rust-ast-resolve-expr.cc: Add ResolveExpr::funny_error

Signed-off-by: Sergey Bugaev <[email protected]>

Author: bugaevc

gcc/rust/resolve/rust-ast-resolve-expr.cc

@@ -29,9 +29,9 @@ namespace Resolver {
 
 void
 ResolveExpr::go (AST::Expr *expr, const CanonicalPath &prefix,
-		 const CanonicalPath &canonical_prefix)
+		 const CanonicalPath &canonical_prefix, bool funny_error)
 {
-  ResolveExpr resolver (prefix, canonical_prefix);
+  ResolveExpr resolver (prefix, canonical_prefix, funny_error);
   expr->accept_vis (resolver);
 }
 
@@ -651,8 +651,10 @@ ResolveExpr::resolve_closure_param (AST::ClosureParam &param,
 }
 
 ResolveExpr::ResolveExpr (const CanonicalPath &prefix,
-			  const CanonicalPath &canonical_prefix)
-  : ResolverBase (), prefix (prefix), canonical_prefix (canonical_prefix)
+			  const CanonicalPath &canonical_prefix,
+			  bool funny_error)
+  : ResolverBase (), prefix (prefix), canonical_prefix (canonical_prefix),
+    funny_error (funny_error)
 {}
 
 } // namespace Resolver

gcc/rust/resolve/rust-ast-resolve-expr.h

@@ -31,7 +31,8 @@ class ResolveExpr : public ResolverBase
 
 public:
   static void go (AST::Expr *expr, const CanonicalPath &prefix,
-		  const CanonicalPath &canonical_prefix);
+		  const CanonicalPath &canonical_prefix,
+		  bool funny_error = false);
 
   void visit (AST::TupleIndexExpr &expr) override;
   void visit (AST::TupleExpr &expr) override;
@@ -84,10 +85,11 @@ class ResolveExpr : public ResolverBase
 
 private:
   ResolveExpr (const CanonicalPath &prefix,
-	       const CanonicalPath &canonical_prefix);
+	       const CanonicalPath &canonical_prefix, bool funny_error);
 
   const CanonicalPath &prefix;
   const CanonicalPath &canonical_prefix;
+  bool funny_error;
 };
 
 } // namespace Resolver