Replace push_back with emplace_back where it makes sense

1 files changed, 6 insertions, 6 deletions

diff --git a/libsolidity/ast/ASTJsonConverter.cpp b/libsolidity/ast/ASTJsonConverter.cpp
index e92134a8..1a2b3345 100644
--- a/libsolidity/ast/ASTJsonConverter.cpp
+++ b/libsolidity/ast/ASTJsonConverter.cpp
@@ -234,7 +234,7 @@ bool ASTJsonConverter::visit(ImportDirective const& _node)
 		make_pair(m_legacy ? "SourceUnit" : "sourceUnit", nodeId(*_node.annotation().sourceUnit)),
 		make_pair("scope", idOrNull(_node.scope()))
 	};
-	attributes.push_back(make_pair("unitAlias", _node.name()));
+	attributes.emplace_back("unitAlias", _node.name());
 	Json::Value symbolAliases(Json::arrayValue);
 	for (auto const& symbolAlias: _node.symbolAliases())
 	{
@@ -244,7 +244,7 @@ bool ASTJsonConverter::visit(ImportDirective const& _node)
 		tuple["local"] =  symbolAlias.second ? Json::Value(*symbolAlias.second) : Json::nullValue;
 		symbolAliases.append(tuple);
 	}
-	attributes.push_back(make_pair("symbolAliases", std::move(symbolAliases)));
+	attributes.emplace_back("symbolAliases", std::move(symbolAliases));
 	setJsonNode(_node, "ImportDirective", std::move(attributes));
 	return false;
 }
@@ -357,7 +357,7 @@ bool ASTJsonConverter::visit(VariableDeclaration const& _node)
 		make_pair("typeDescriptions", typePointerToJson(_node.annotation().type, true))
 	};
 	if (m_inEvent)
-		attributes.push_back(make_pair("indexed", _node.isIndexed()));
+		attributes.emplace_back("indexed", _node.isIndexed());
 	setJsonNode(_node, "VariableDeclaration", std::move(attributes));
 	return false;
 }
@@ -647,11 +647,11 @@ bool ASTJsonConverter::visit(FunctionCall const& _node)
 	};
 	if (m_legacy)
 	{
-		attributes.push_back(make_pair("isStructConstructorCall", _node.annotation().kind == FunctionCallKind::StructConstructorCall));
-		attributes.push_back(make_pair("type_conversion", _node.annotation().kind == FunctionCallKind::TypeConversion));
+		attributes.emplace_back("isStructConstructorCall", _node.annotation().kind == FunctionCallKind::StructConstructorCall);
+		attributes.emplace_back("type_conversion", _node.annotation().kind == FunctionCallKind::TypeConversion);
 	}
 	else
-		attributes.push_back(make_pair("kind", functionCallKind(_node.annotation().kind)));
+		attributes.emplace_back("kind", functionCallKind(_node.annotation().kind));
 	appendExpressionAttributes(attributes, _node.annotation());
 	setJsonNode(_node, "FunctionCall", std::move(attributes));
 	return false;