[parser] Refactor of Parse*Statement*, part 7

src/parsing/preparser.cc

Index: src/parsing/preparser.cc
diff --git a/src/parsing/preparser.cc b/src/parsing/preparser.cc
index 9161a1a49a26fd87d4a362611d22fd8a7e42dea8..9dffa836e90edd906151368c43ea2447aa4b9bea 100644
--- a/src/parsing/preparser.cc
+++ b/src/parsing/preparser.cc
@@ -298,72 +298,6 @@ PreParser::Statement PreParser::ParseForStatement(
 }
 
 
-PreParser::Statement PreParser::ParseTryStatement(bool* ok) {
-  // TryStatement ::
-  //   'try' Block Catch
-  //   'try' Block Finally
-  //   'try' Block Catch Finally
-  //
-  // Catch ::
-  //   'catch' '(' Identifier ')' Block
-  //
-  // Finally ::
-  //   'finally' Block
-
-  Expect(Token::TRY, CHECK_OK);
-
-  {
-    ReturnExprScope no_tail_calls(function_state_,
-                                  ReturnExprContext::kInsideTryBlock);
-    ParseBlock(nullptr, CHECK_OK);
-  }
-
-  Token::Value tok = peek();
-  if (tok != Token::CATCH && tok != Token::FINALLY) {
-    ReportMessageAt(scanner()->location(), MessageTemplate::kNoCatchOrFinally);
-    *ok = false;
-    return Statement::Default();
-  }
-  TailCallExpressionList tail_call_expressions_in_catch_block(zone());
-  bool catch_block_exists = false;
-  if (tok == Token::CATCH) {
-    Consume(Token::CATCH);
-    Expect(Token::LPAREN, CHECK_OK);
-    Scope* catch_scope = NewScope(CATCH_SCOPE);
-    ExpressionClassifier pattern_classifier(this);
-    ParsePrimaryExpression(CHECK_OK);
-    ValidateBindingPattern(CHECK_OK);
-    Expect(Token::RPAREN, CHECK_OK);
-    {
-      CollectExpressionsInTailPositionToListScope
-          collect_tail_call_expressions_scope(
-              function_state_, &tail_call_expressions_in_catch_block);
-      BlockState block_state(&scope_state_, catch_scope);
-      {
-        BlockState block_state(&scope_state_);
-        ParseBlock(nullptr, CHECK_OK);
-      }
-    }
-    catch_block_exists = true;
-    tok = peek();
-  }
-  if (tok == Token::FINALLY) {
-    Consume(Token::FINALLY);
-    ParseBlock(nullptr, CHECK_OK);
-    if (FLAG_harmony_explicit_tailcalls && catch_block_exists &&
-        tail_call_expressions_in_catch_block.has_explicit_tail_calls()) {
-      // TODO(ishell): update chapter number.
-      // ES8 XX.YY.ZZ
-      ReportMessageAt(tail_call_expressions_in_catch_block.location(),
-                      MessageTemplate::kUnexpectedTailCallInCatchBlock);
-      *ok = false;
-      return Statement::Default();
-    }
-  }
-  return Statement::Default();
-}
-
-
 // Redefinition of CHECK_OK for parsing expressions.
 #undef CHECK_OK
 #define CHECK_OK CHECK_OK_VALUE(Expression::Default())