Purge using namespace from libsolidity/lsp and parsing

libsolidity/interface/CompilerStack.cpp

@@ -1859,7 +1859,7 @@ Json::Value CompilerStack::gasEstimates(std::string const& _contractName) const
 		if (contract.fallbackFunction())
 			/// This needs to be set to an invalid signature in order to trigger the fallback,
 			/// without the shortcut (of CALLDATSIZE == 0), and therefore to receive the upper bound.
-			/// An empty std::string ("") would work to trigger the shortcut only.
+			/// An empty string ("") would work to trigger the shortcut only.
 			externalFunctions[""] = gasToJson(gasEstimator.functionalEstimation(*items, "INVALID"));
 
 		if (!externalFunctions.empty())

libsolidity/interface/StandardCompiler.cpp

@@ -323,7 +323,7 @@ Json::Value formatLinkReferences(std::map<size_t, std::string> const& linkRefere
 		std::string const& fullname = ref.second;
 
 		// If the link reference does not contain a colon, assume that the file name is missing and
-		// the whole std::string represents the library name.
+		// the whole string represents the library name.
 		size_t colon = fullname.rfind(':');
 		std::string file = (colon != std::string::npos ? fullname.substr(0, colon) : "");
 		std::string name = (colon != std::string::npos ? fullname.substr(colon + 1) : fullname);

libsolidity/lsp/DocumentHoverHandler.cpp

@@ -23,9 +23,6 @@
 
 namespace solidity::lsp
 {
-
-using namespace std;
-
 using namespace solidity::lsp;
 using namespace solidity::langutil;
 using namespace solidity::frontend;
@@ -35,16 +32,16 @@ namespace
 
 struct MarkdownBuilder
 {
-	stringstream result;
+	std::stringstream result;
 
-	MarkdownBuilder& solidityCode(string const& _code)
+	MarkdownBuilder& solidityCode(std::string const& _code)
 	{
 		auto constexpr SolidityLanguageId = "solidity";
 		result << "```" << SolidityLanguageId << '\n' << _code << "\n```\n\n";
 		return *this;
 	}
 
-	MarkdownBuilder& paragraph(string const& _text)
+	MarkdownBuilder& paragraph(std::string const& _text)
 	{
 		if (!_text.empty())
 		{

libsolidity/lsp/FileRepository.cpp

@@ -34,7 +34,6 @@
 
 #include <fmt/format.h>
 
-using namespace std;
 using namespace solidity;
 using namespace solidity::lsp;
 using namespace solidity::frontend;
@@ -54,11 +53,11 @@ void FileRepository::setIncludePaths(std::vector<boost::filesystem::path> _paths
 	m_includePaths = std::move(_paths);
 }
 
-string FileRepository::sourceUnitNameToUri(string const& _sourceUnitName) const
+std::string FileRepository::sourceUnitNameToUri(std::string const& _sourceUnitName) const
 {
-	regex const windowsDriveLetterPath("^[a-zA-Z]:/");
+	std::regex const windowsDriveLetterPath("^[a-zA-Z]:/");
 
-	auto const ensurePathIsUnixLike = [&](string inputPath) -> string {
+	auto const ensurePathIsUnixLike = [&](std::string inputPath) -> std::string {
 		if (!regex_search(inputPath, windowsDriveLetterPath))
 			return inputPath;
 		else
@@ -86,13 +85,13 @@ string FileRepository::sourceUnitNameToUri(string const& _sourceUnitName) const
 		return "file:///" + _sourceUnitName;
 }
 
-string FileRepository::uriToSourceUnitName(string const& _path) const
+std::string FileRepository::uriToSourceUnitName(std::string const& _path) const
 {
 	lspRequire(boost::algorithm::starts_with(_path, "file://"), ErrorCode::InternalError, "URI must start with file://");
 	return stripFileUriSchemePrefix(_path);
 }
 
-void FileRepository::setSourceByUri(string const& _uri, string _source)
+void FileRepository::setSourceByUri(std::string const& _uri, std::string _source)
 {
 	// This is needed for uris outside the base path. It can lead to collisions,
 	// but we need to mostly rewrite this in a future version anyway.
@@ -110,9 +109,9 @@ Result<boost::filesystem::path> FileRepository::tryResolvePath(std::string const
 	)
 		return boost::filesystem::path(_strippedSourceUnitName);
 
-	vector<boost::filesystem::path> candidates;
-	vector<reference_wrapper<boost::filesystem::path const>> prefixes = {m_basePath};
-	prefixes += (m_includePaths | ranges::to<vector<reference_wrapper<boost::filesystem::path const>>>);
+	std::vector<boost::filesystem::path> candidates;
+	std::vector<std::reference_wrapper<boost::filesystem::path const>> prefixes = {m_basePath};
+	prefixes += (m_includePaths | ranges::to<std::vector<std::reference_wrapper<boost::filesystem::path const>>>);
 	auto const defaultInclude = m_basePath / "node_modules";
 	if (m_includePaths.empty())
 		prefixes.emplace_back(defaultInclude);
@@ -148,7 +147,7 @@ Result<boost::filesystem::path> FileRepository::tryResolvePath(std::string const
 	return candidates[0];
 }
 
-frontend::ReadCallback::Result FileRepository::readFile(string const& _kind, string const& _sourceUnitName)
+frontend::ReadCallback::Result FileRepository::readFile(std::string const& _kind, std::string const& _sourceUnitName)
 {
 	solAssert(
 		_kind == ReadCallback::kindString(ReadCallback::Kind::ReadFile),
@@ -161,7 +160,7 @@ frontend::ReadCallback::Result FileRepository::readFile(string const& _kind, str
 		if (m_sourceCodes.count(_sourceUnitName))
 			return ReadCallback::Result{true, m_sourceCodes.at(_sourceUnitName)};
 
-		string const strippedSourceUnitName = stripFileUriSchemePrefix(_sourceUnitName);
+		std::string const strippedSourceUnitName = stripFileUriSchemePrefix(_sourceUnitName);
 		Result<boost::filesystem::path> const resolvedPath = tryResolvePath(strippedSourceUnitName);
 		if (!resolvedPath.message().empty())
 			return ReadCallback::Result{false, resolvedPath.message()};

libsolidity/lsp/GotoDefinition.cpp

@@ -30,15 +30,14 @@
 using namespace solidity::frontend;
 using namespace solidity::langutil;
 using namespace solidity::lsp;
-using namespace std;
 
 void GotoDefinition::operator()(MessageID _id, Json::Value const& _args)
 {
 	auto const [sourceUnitName, lineColumn] = extractSourceUnitNameAndLineColumn(_args);
 
 	ASTNode const* sourceNode = m_server.astNodeAtSourceLocation(sourceUnitName, lineColumn);
 
-	vector<SourceLocation> locations;
+	std::vector<SourceLocation> locations;
 	if (auto const* expression = dynamic_cast<Expression const*>(sourceNode))
 	{
 		// Handles all expressions that can have one or more declaration annotation.
@@ -56,7 +55,7 @@ void GotoDefinition::operator()(MessageID _id, Json::Value const& _args)
 	{
 		auto const& path = *importDirective->annotation().absolutePath;
 		if (fileRepository().sourceUnits().count(path))
-			locations.emplace_back(SourceLocation{0, 0, make_shared<string const>(path)});
+			locations.emplace_back(SourceLocation{0, 0, std::make_shared<std::string const>(path)});
 	}
 
 	Json::Value reply = Json::arrayValue;

libsolidity/lsp/HandlerBase.cpp

@@ -29,7 +29,6 @@
 using namespace solidity::langutil;
 using namespace solidity::lsp;
 using namespace solidity::util;
-using namespace std;
 
 Json::Value HandlerBase::toRange(SourceLocation const& _location) const
 {
@@ -52,10 +51,10 @@ Json::Value HandlerBase::toJson(SourceLocation const& _location) const
 	return item;
 }
 
-pair<string, LineColumn> HandlerBase::extractSourceUnitNameAndLineColumn(Json::Value const& _args) const
+std::pair<std::string, LineColumn> HandlerBase::extractSourceUnitNameAndLineColumn(Json::Value const& _args) const
 {
-	string const uri = _args["textDocument"]["uri"].asString();
-	string const sourceUnitName = fileRepository().uriToSourceUnitName(uri);
+	std::string const uri = _args["textDocument"]["uri"].asString();
+	std::string const sourceUnitName = fileRepository().uriToSourceUnitName(uri);
 	if (!fileRepository().sourceUnits().count(sourceUnitName))
 		BOOST_THROW_EXCEPTION(
 			RequestError(ErrorCode::RequestFailed) <<