1 files changed, 56 insertions, 0 deletions
diff --git a/libsolidity/parsing/Parser.cpp b/libsolidity/parsing/Parser.cpp
index 72150a3e..470586cf 100644
--- a/libsolidity/parsing/Parser.cpp
+++ b/libsolidity/parsing/Parser.cpp
@@ -1437,5 +1437,61 @@ ASTPointer<ParameterList> Parser::createEmptyParameterList()
 	return nodeFactory.createNode<ParameterList>(vector<ASTPointer<VariableDeclaration>>());
 }
 
+Token::Value Parser::expectAssignmentOperator()
+{
+	Token::Value op = m_scanner->currentToken();
+	if (!Token::isAssignmentOp(op))
+	{
+		if (Token::isElementaryTypeName(op)) //for the sake of accuracy in reporting
+		{
+			ElementaryTypeNameToken elemTypeName = m_scanner->currentElementaryTypeNameToken();
+			fatalParserError(
+				string("Expected assignment operator,  got '") +
+				elemTypeName.toString() +
+				string("'")
+			);
+		}
+		else
+			fatalParserError(
+				string("Expected assignment operator,  got '") +
+				string(Token::name(m_scanner->currentToken())) +
+				string("'")
+			);
+	}
+	m_scanner->next();
+	return op;
+}
+
+ASTPointer<ASTString> Parser::expectIdentifierToken()
+{
+	Token::Value id = m_scanner->currentToken();
+	if (id != Token::Identifier)
+	{
+		if (Token::isElementaryTypeName(id)) //for the sake of accuracy in reporting
+		{
+			ElementaryTypeNameToken elemTypeName = m_scanner->currentElementaryTypeNameToken();
+			fatalParserError(
+				string("Expected identifier, got '") +
+				elemTypeName.toString() +
+				string("'")
+			);
+		}
+		else
+			fatalParserError(
+				string("Expected identifier, got '") +
+				string(Token::name(id)) +
+				string("'")
+			);
+	}
+	return getLiteralAndAdvance();
+}
+
+ASTPointer<ASTString> Parser::getLiteralAndAdvance()
+{
+	ASTPointer<ASTString> identifier = make_shared<ASTString>(m_scanner->currentLiteral());
+	m_scanner->next();
+	return identifier;
+}
+
 }
 }