Merge pull request #5180 from ethereum/cpp-cleanup

Some C++ cleanup

libsolidity/analysis/SyntaxChecker.cpp

@@ -76,7 +76,7 @@ bool SyntaxChecker::visit(PragmaDirective const& _pragma)
 	{
 		solAssert(m_sourceUnit, "");
 		vector<string> literals(_pragma.literals().begin() + 1, _pragma.literals().end());
-		if (literals.size() == 0)
+		if (literals.empty())
 			m_errorReporter.syntaxError(
 				_pragma.location(),
 				"Experimental feature name is missing."

libsolidity/analysis/TypeChecker.cpp

@@ -2123,7 +2123,7 @@ bool TypeChecker::visit(MemberAccess const& _memberAccess)
 
 	auto& annotation = _memberAccess.annotation();
 
-	if (possibleMembers.size() == 0)
+	if (possibleMembers.empty())
 	{
 		if (initialMemberCount == 0)
 		{

libsolidity/codegen/ContractCompiler.cpp

@@ -965,7 +965,7 @@ void ContractCompiler::popScopedVariables(ASTNode const* _node)
 	unsigned stackDiff = m_context.stackHeight() - blockHeight;
 	CompilerUtils(m_context).popStackSlots(stackDiff);
 	m_scopeStackHeight[m_modifierDepth].erase(_node);
-	if (m_scopeStackHeight[m_modifierDepth].size() == 0)
+	if (m_scopeStackHeight[m_modifierDepth].empty())
 		m_scopeStackHeight.erase(m_modifierDepth);
 }
 

libsolidity/formal/SMTChecker.cpp

@@ -894,7 +894,7 @@ void SMTChecker::pushPathCondition(smt::Expression const& _e)
 
 smt::Expression SMTChecker::currentPathConditions()
 {
-	if (m_pathConditions.size() == 0)
+	if (m_pathConditions.empty())
 		return smt::Expression(true);
 	return m_pathConditions.back();
 }

libsolidity/inlineasm/AsmParser.cpp

@@ -26,7 +26,7 @@
 
 #include <boost/algorithm/string.hpp>
 
-#include <ctype.h>
+#include <cctype>
 #include <algorithm>
 
 using namespace std;
@@ -97,7 +97,7 @@ assembly::Statement Parser::parseStatement()
 			fatalParserError("Only one default case allowed.");
 		else if (m_scanner->currentToken() == Token::Case)
 			fatalParserError("Case not allowed after default case.");
-		if (_switch.cases.size() == 0)
+		if (_switch.cases.empty())
 			fatalParserError("Switch statement without any cases.");
 		_switch.location.end = _switch.cases.back().body.location.end;
 		return _switch;

libsolidity/interface/CompilerStack.cpp

@@ -780,7 +780,7 @@ CompilerStack::Contract const& CompilerStack::contract(string const& _contractNa
 	// To provide a measure of backward-compatibility, if a contract is not located by its
 	// fully-qualified name, a lookup will be attempted purely on the contract's name to see
 	// if anything will satisfy.
-	if (_contractName.find(":") == string::npos)
+	if (_contractName.find(':') == string::npos)
 	{
 		for (auto const& contractEntry: m_contracts)
 		{

libsolidity/interface/StandardCompiler.cpp

@@ -509,7 +509,7 @@ Json::Value StandardCompiler::compileInternal(Json::Value const& _input)
 	bool const compilationSuccess = m_compilerStack.state() == CompilerStack::State::CompilationSuccessful;
 
 	/// Inconsistent state - stop here to receive error reports from users
-	if (!compilationSuccess && (errors.size() == 0))
+	if (!compilationSuccess && errors.empty())
 		return formatFatalError("InternalCompilerError", "No error reported, but compilation failed.");
 
 	Json::Value output = Json::objectValue;

libsolidity/parsing/Parser.cpp

@@ -20,7 +20,7 @@
  * Solidity parser.
  */
 
-#include <ctype.h>
+#include <cctype>
 #include <vector>
 #include <libevmasm/SourceLocation.h>
 #include <libsolidity/parsing/Parser.h>
@@ -554,7 +554,7 @@ ASTPointer<EnumDefinition> Parser::parseEnumDefinition()
 		if (m_scanner->currentToken() != Token::Identifier)
 			fatalParserError(string("Expected identifier after ','"));
 	}
-	if (members.size() == 0)
+	if (members.empty())
 		parserError({"enum with no members is not allowed."});
 
 	nodeFactory.markEndPosition();