191   FailureOr<ast::VariableDecl *> parseArgumentDecl();
195   FailureOr<ast::VariableDecl *> parseResultDecl(unsigned resultNum);
210       ArrayRef<ast::VariableDecl *> arguments, ast::DeclScope *argumentScope,
211       ArrayRef<ast::VariableDecl *> results, ast::Type resultType);
225       ArrayRef<ast::VariableDecl *> arguments, ast::DeclScope *argumentScope,
226       ArrayRef<ast::VariableDecl *> results, ast::Type resultType);
241       ArrayRef<ast::VariableDecl *> arguments,
242       ArrayRef<ast::VariableDecl *> results, ast::Type resultType);
247       SmallVectorImpl<ast::VariableDecl *> &arguments,
248       SmallVectorImpl<ast::VariableDecl *> &results,
257       ArrayRef<ast::VariableDecl *> results, ast::Type &resultType);
272   FailureOr<ast::VariableDecl *>
276   FailureOr<ast::VariableDecl *>
360   createUserConstraintRewriteResultType(ArrayRef<ast::VariableDecl *> results);
365       const ast::Name &name, ArrayRef<ast::VariableDecl *> arguments,
366       ArrayRef<ast::VariableDecl *> results, ast::Type resultType,
371   FailureOr<ast::VariableDecl *>
377   FailureOr<ast::VariableDecl *>
932   auto *paramVar = ast::VariableDecl::create(  in createODSNativePDLLConstraintDecl()
1056 FailureOr<ast::VariableDecl *> Parser::parseArgumentDecl() {  in parseArgumentDecl()
1077 FailureOr<ast::VariableDecl *> Parser::parseResultDecl(unsigned resultNum) {  in parseResultDecl()
1144     ArrayRef<ast::VariableDecl *> arguments, ast::DeclScope *argumentScope,  in parseUserPDLLConstraintDecl()
1145     ArrayRef<ast::VariableDecl *> results, ast::Type resultType) {  in parseUserPDLLConstraintDecl()
1210     ArrayRef<ast::VariableDecl *> arguments, ast::DeclScope *argumentScope,  in parseUserPDLLRewriteDecl()
1211     ArrayRef<ast::VariableDecl *> results, ast::Type resultType) {  in parseUserPDLLRewriteDecl()
1288   SmallVector<ast::VariableDecl *> arguments, results;  in parseUserConstraintOrRewriteDecl()
1309     ArrayRef<ast::VariableDecl *> arguments,  in parseUserNativeConstraintOrRewriteDecl()
1310     ArrayRef<ast::VariableDecl *> results, ast::Type resultType) {  in parseUserNativeConstraintOrRewriteDecl()
1337     SmallVectorImpl<ast::VariableDecl *> &arguments,  in parseUserConstraintOrRewriteSignature()
1338     SmallVectorImpl<ast::VariableDecl *> &results,  in parseUserConstraintOrRewriteSignature()
1347       FailureOr<ast::VariableDecl *> argument = parseArgumentDecl();  in parseUserConstraintOrRewriteSignature()
1361       FailureOr<ast::VariableDecl *> result = parseResultDecl(results.size());  in parseUserConstraintOrRewriteSignature()
1400     ArrayRef<ast::VariableDecl *> results, ast::Type &resultType) {  in validateUserConstraintOrRewriteReturn()
1580 FailureOr<ast::VariableDecl *>
1590     return ast::VariableDecl::create(ctx, nameDecl, type, initExpr,  in defineVariableDecl()
1597       ast::VariableDecl::create(ctx, nameDecl, type, initExpr, constraints);  in defineVariableDecl()
1602 FailureOr<ast::VariableDecl *>
2012     FailureOr<ast::VariableDecl *> rangeVar =  in parseOperationExpr()
2333   FailureOr<ast::VariableDecl *> varDecl =  in parseLetStmt()
2466     ArrayRef<ast::VariableDecl *> results) {  in createUserConstraintRewriteResultType()
2483     const ast::Name &name, ArrayRef<ast::VariableDecl *> arguments,  in createUserPDLLConstraintOrRewriteDecl()
2484     ArrayRef<ast::VariableDecl *> results, ast::Type resultType,  in createUserPDLLConstraintOrRewriteDecl()
2504 FailureOr<ast::VariableDecl *>
2539   FailureOr<ast::VariableDecl *> varDecl =  in createVariableDecl()
2547 FailureOr<ast::VariableDecl *>
2611     ArrayRef<ast::VariableDecl *> inputs = cst->getInputs();  in validateVariableConstraint()
2684   ArrayRef<ast::VariableDecl *> callArgs = callableDecl->getInputs();  in createCallExpr()
2721   else if (auto *varDecl = dyn_cast<ast::VariableDecl>(decl))  in createDeclRefExpr()
2733   FailureOr<ast::VariableDecl *> decl =  in createInlineVariableExpr()