4 files changed, 9 insertions, 9 deletions
diff --git a/libsolidity/parsing/Parser.cpp b/libsolidity/parsing/Parser.cpp
index d3a6aa45..7455cbca 100644
--- a/libsolidity/parsing/Parser.cpp
+++ b/libsolidity/parsing/Parser.cpp
@@ -40,7 +40,7 @@ namespace solidity
 class Parser::ASTNodeFactory
 {
 public:
-	ASTNodeFactory(Parser const& _parser):
+	explicit ASTNodeFactory(Parser const& _parser):
 		m_parser(_parser), m_location(_parser.position(), -1, _parser.sourceName()) {}
 	ASTNodeFactory(Parser const& _parser, ASTPointer<ASTNode> const& _childNode):
 		m_parser(_parser), m_location(_childNode->location()) {}
@@ -69,7 +69,7 @@ private:
 class Parser::RecursionGuard
 {
 public:
-	RecursionGuard(Parser& _parser):
+	explicit RecursionGuard(Parser& _parser):
 		m_parser(_parser)
 	{
 		m_parser.increaseRecursionDepth();
diff --git a/libsolidity/parsing/Parser.h b/libsolidity/parsing/Parser.h
index 5e6f3ef6..0f74880c 100644
--- a/libsolidity/parsing/Parser.h
+++ b/libsolidity/parsing/Parser.h
@@ -35,7 +35,7 @@ class Scanner;
 class Parser: public ParserBase
 {
 public:
-	Parser(ErrorReporter& _errorReporter): ParserBase(_errorReporter) {}
+	explicit Parser(ErrorReporter& _errorReporter): ParserBase(_errorReporter) {}
 
 	ASTPointer<SourceUnit> parse(std::shared_ptr<Scanner> const& _scanner);
 
diff --git a/libsolidity/parsing/ParserBase.h b/libsolidity/parsing/ParserBase.h
index 5b03ab5e..48733fc1 100644
--- a/libsolidity/parsing/ParserBase.h
+++ b/libsolidity/parsing/ParserBase.h
@@ -36,7 +36,7 @@ class Scanner;
 class ParserBase
 {
 public:
-	ParserBase(ErrorReporter& errorReporter): m_errorReporter(errorReporter) {}
+	explicit ParserBase(ErrorReporter& errorReporter): m_errorReporter(errorReporter) {}
 
 	std::shared_ptr<std::string const> const& sourceName() const;
 
diff --git a/libsolidity/parsing/Scanner.h b/libsolidity/parsing/Scanner.h
index d6b48c6f..0adaa6fd 100644
--- a/libsolidity/parsing/Scanner.h
+++ b/libsolidity/parsing/Scanner.h
@@ -75,7 +75,7 @@ public:
 	int position() const { return m_position; }
 	bool isPastEndOfInput(size_t _charsForward = 0) const { return (m_position + _charsForward) >= m_source.size(); }
 	char get(size_t _charsForward = 0) const { return m_source[m_position + _charsForward]; }
-	char advanceAndGet(size_t _chars=1);
+	char advanceAndGet(size_t _chars = 1);
 	char rollback(size_t _amount);
 
 	void reset() { m_position = 0; }
@@ -118,11 +118,11 @@ public:
 	///@name Information about the current token
 
 	/// @returns the current token
-	Token::Value currentToken()
+	Token::Value currentToken() const
 	{
 		return m_currentToken.token;
 	}
-	ElementaryTypeNameToken currentElementaryTypeNameToken()
+	ElementaryTypeNameToken currentElementaryTypeNameToken() const
 	{
 		unsigned firstSize;
 		unsigned secondSize;
@@ -219,8 +219,8 @@ private:
 	bool scanEscape();
 
 	/// Return the current source position.
-	int sourcePos() { return m_source.position(); }
-	bool isSourcePastEndOfInput() { return m_source.isPastEndOfInput(); }
+	int sourcePos() const { return m_source.position(); }
+	bool isSourcePastEndOfInput() const { return m_source.isPastEndOfInput(); }
 
 	TokenDesc m_skippedComment;  // desc for current skipped comment
 	TokenDesc m_nextSkippedComment; // desc for next skiped comment