private void EmitParameter(JsonTextWriter jsonWriter, ParameterSymbol parameterSymbol, ExpressionEmitter emitter)
{
// local function
bool IsSecure(SyntaxBase?value) => value is BooleanLiteralSyntax boolLiteral && boolLiteral.Value;
if (!(SyntaxHelper.TryGetPrimitiveType(parameterSymbol.DeclaringParameter) is TypeSymbol primitiveType))
{
// this should have been caught by the type checker long ago
throw new ArgumentException($"Unable to find primitive type for parameter {parameterSymbol.Name}");
}
jsonWriter.WriteStartObject();
if (parameterSymbol.DeclaringParameter.Decorators.Any())
{
var parameterType = SyntaxFactory.CreateStringLiteral(primitiveType.Name);
var parameterObject = SyntaxFactory.CreateObject(SyntaxFactory.CreateObjectProperty("type", parameterType).AsEnumerable());
if (parameterSymbol.Modifier is ParameterDefaultValueSyntax defaultValueSyntax)
{
parameterObject = parameterObject.MergeProperty("defaultValue", defaultValueSyntax.DefaultValue);
}
parameterObject = EvaluateDecorators(parameterSymbol.DeclaringParameter, parameterObject, primitiveType);
foreach (var property in parameterObject.Properties)
{
if (property.TryGetKeyText() is string propertyName)
{
emitter.EmitProperty(propertyName, property.Value);
}
}
}
else
{
// TODO: remove this before the 0.3 release.
switch (parameterSymbol.Modifier)
{
case null:
emitter.EmitProperty("type", GetTemplateTypeName(primitiveType, secure: false));
break;
case ParameterDefaultValueSyntax defaultValueSyntax:
emitter.EmitProperty("type", GetTemplateTypeName(primitiveType, secure: false));
emitter.EmitProperty("defaultValue", defaultValueSyntax.DefaultValue);
break;
case ObjectSyntax modifierSyntax:
// this would throw on duplicate properties in the object node - we are relying on emitter checking for errors at the beginning
var properties = modifierSyntax.ToKnownPropertyValueDictionary();
emitter.EmitProperty("type", GetTemplateTypeName(primitiveType, IsSecure(properties.TryGetValue("secure"))));
// relying on validation here as well (not all of the properties are valid in all contexts)
foreach (string modifierPropertyName in ParameterModifierPropertiesToEmitDirectly)
{
emitter.EmitOptionalPropertyExpression(modifierPropertyName, properties.TryGetValue(modifierPropertyName));
}
emitter.EmitOptionalPropertyExpression("defaultValue", properties.TryGetValue(LanguageConstants.ParameterDefaultPropertyName));
emitter.EmitOptionalPropertyExpression("allowedValues", properties.TryGetValue(LanguageConstants.ParameterAllowedPropertyName));
break;
}
}
jsonWriter.WriteEndObject();
}