public static void WriteImport(CodeTextBuilder code, ImportDirective import)
{
code.Write("import ");
if (import.AsDefault != null)
{
code.Write(import.AsDefault.Name);
}
else if (import.AsNamespace != null)
{
code.Write($"* as {import.AsNamespace.Name}");
}
else if (import.AsTuple != null)
{
JavaScriptExpressionWriter.WriteTuple(code, import.AsTuple);
}
if (import.From != null)
{
code.Write($" from '{import.From.GetModulePath()}'");
}
else if (import.What != null)
{
code.Write($"'{import.What.GetModulePath()}'");
}
code.WriteLine(";");
}
private static void WriteReturn(CodeTextBuilder code, ReturnStatement statement)
{
code.Write("return");
if (statement.Expression != null)
{
code.Write(" ");
JavaScriptExpressionWriter.WriteExpression(code, statement.Expression);
}
}
private static void WriteVariableDeclaration(CodeTextBuilder code, VariableDeclarationStatement statement)
{
code.Write(statement.Variable.IsFinal ? "const " : "let ");
code.Write(statement.Variable.Name);
if (statement.InitialValue != null)
{
code.Write(" = ");
JavaScriptExpressionWriter.WriteExpression(code, statement.InitialValue);
}
}
private static void WriteIf(CodeTextBuilder code, IfStatement statement)
{
code.Write("if (");
JavaScriptExpressionWriter.WriteExpression(code, statement.Condition);
code.WriteLine(") ");
WriteBlockInsideBraces(code, statement.ThenBlock);
if (statement.ElseBlock != null)
{
WriteBlockInsideBraces(code, statement.ElseBlock);
}
}
public static void WriteArrowFunction(CodeTextBuilder code, MethodSignature signature, BlockStatement body)
{
if (signature.IsAsync)
{
code.Write("async ");
}
if (signature.Parameters.Count != 1)
{
WriteParameters(code, signature);
}
else
{
code.Write($"{signature.Parameters[0].Name} ");
}
code.Write("=> ");
switch (body.Statements.Count)
{
case 0:
code.Write("{ }");
break;
case 1:
if (body.Statements[0] is ReturnStatement @return)
{
var needParentheses = (@return.Expression is ObjectInitializerExpression init && init.PropertyValues.Count > 1);
code.WriteIf(needParentheses, "(");
JavaScriptExpressionWriter.WriteExpression(code, @return.Expression);
code.WriteIf(needParentheses, ")");
}
else
{
// code.WriteLine();
// code.Indent(1);
JavaScriptStatementWriter.WriteStatement(code, body.Statements[0]);
// code.WriteLine();
// code.Indent(-1);
}
break;
default:
WriteBody(code, body);
break;
}
}
private static void WriteParameters(CodeTextBuilder code, MethodSignature signature)
{
code.WriteListStart(opener: "(", separator: ", ", closer: ") ");
signature.Parameters.ForEach(parameter => {
code.WriteListItem();
if (parameter.Tuple != null)
{
JavaScriptExpressionWriter.WriteTuple(code, parameter.Tuple);
}
else
{
code.Write(parameter.Name);
}
});
code.WriteListEnd();
}
private void WriteStartElement(XElement element)
{
_code.Write($"<{element.Name}");
foreach (var attribute in element.Attributes())
{
_code.Write(" ");
if (attribute is JsxExpressionAttribute expressionAttribute)
{
_code.Write(attribute.Name.ToString());
_code.Write("={");
JavaScriptExpressionWriter.WriteExpression(_code, expressionAttribute.Expression);
_code.Write("}");
}
else
{
_code.Write(attribute.ToString());
}
}
_code.Write(element.IsEmpty ? " />" : ">");
}
private static void WriteExpression(CodeTextBuilder code, ExpressionStatement statement)
{
JavaScriptExpressionWriter.WriteExpression(code, statement.Expression);
}