Apply modernize-pass-by-value.

liblangutil/CharStream.h

@@ -55,6 +55,7 @@
 #include <cstdint>
 #include <string>
 #include <tuple>
+#include <utility>
 
 namespace solidity::langutil
 {
@@ -68,8 +69,8 @@ class CharStream
 {
 public:
 	CharStream() = default;
-	explicit CharStream(std::string const& _source, std::string const& name):
-		m_source(_source), m_name(name) {}
+	explicit CharStream(std::string  _source, std::string  name):
+		m_source(std::move(_source)), m_name(std::move(name)) {}
 
 	int position() const { return m_position; }
 	bool isPastEndOfInput(size_t _charsForward = 0) const { return (m_position + _charsForward) >= m_source.size(); }

liblangutil/Exceptions.h

@@ -22,15 +22,16 @@
 
 #pragma once
 
-#include <string>
-#include <utility>
-#include <vector>
-#include <memory>
 #include <libsolutil/Exceptions.h>
 #include <libsolutil/Assertions.h>
 #include <libsolutil/CommonData.h>
 #include <liblangutil/SourceLocation.h>
 
+#include <string>
+#include <utility>
+#include <vector>
+#include <memory>
+
 namespace solidity::langutil
 {
 class Error;

liblangutil/SemVerHandler.h

@@ -23,7 +23,9 @@
 #pragma once
 
 #include <liblangutil/Token.h>
+
 #include <string>
+#include <utility>
 #include <vector>
 
 namespace solidity::langutil
@@ -80,8 +82,8 @@ struct SemVerMatchExpression
 class SemVerMatchExpressionParser
 {
 public:
-	SemVerMatchExpressionParser(std::vector<Token> const& _tokens, std::vector<std::string> const& _literals):
-		m_tokens(_tokens), m_literals(_literals)
+	SemVerMatchExpressionParser(std::vector<Token>  _tokens, std::vector<std::string>  _literals):
+		m_tokens(std::move(_tokens)), m_literals(std::move(_literals))
 	{}
 	SemVerMatchExpression parse();