public override object VisitField(GraphQLParser.FieldContext context)
{
var field = new Field();
NewNode(field, context);
if (context.NAME() != null)
{
field.Name = context.NAME().GetText();
}
if (context.alias() != null)
{
field.Alias = context.alias().NAME().GetText();
}
if (context.arguments() != null)
{
field.Arguments = Visit(context.arguments()) as Arguments;
}
if (context.directives() != null)
{
field.Directives = Visit(context.directives()) as Directives;
}
if (context.selectionSet() != null)
{
field.SelectionSet = Visit(context.selectionSet()) as SelectionSet;
}
return(field);
}
public override object VisitField(GraphQLParser.FieldContext context)
{
var field = new Field();
if (context.fieldName().alias() != null)
{
var aliasContext = context.fieldName().alias();
field.Alias = aliasContext.NAME(0).GetText();
field.Name = aliasContext.NAME(1).GetText();
}
else
{
field.Name = context.fieldName().NAME().GetText();
}
if (context.arguments() != null)
{
field.Arguments = Visit(context.arguments()) as Arguments;
}
if (context.directives() != null)
{
field.Directives = Visit(context.directives()) as Directives;
}
if (context.selectionSet() != null)
{
field.Selections = Visit(context.selectionSet()) as Selections;
}
return(field);
}
public Dictionary <string, Object> CoerceArgumentValues(__Type objectType, GraphQLParser.FieldContext field,
Dictionary <string, Object> variableValues)
{
if (field.arguments() == null)
{
return(emptyArgs);
}
var coercedValues = new Dictionary <string, Object>();
var argumentValues = field.arguments().argument();
var fieldName = field.fieldName().GetText();
var objectField = objectType.GetField((x) => x.name == fieldName);
if (objectField == null)
{
Error(
$"Could not find field with name - {fieldName} in objecttype with name: {objectType.name} and underlying type:{objectType.dotNetType.Name}",
field);
}
foreach (var argumentDefinition in objectField.args)
{
var argumentName = argumentDefinition.name;
var argumentType = argumentDefinition.type;
var defaultValue = argumentDefinition.defaultValue;
var value =
argumentValues.Where(x => x.NAME().GetText() == argumentName)
.Select(x => x.valueOrVariable())
.FirstOrDefault();
if (value?.variable() != null)
{
var variableName = value.variable().NAME().GetText();
Object variableValue = null;
if (variableValues.ContainsKey(variableName))
{
variableValue = variableValues[variableName];
}
if (variableValue != null)
{
coercedValues[argumentName] = variableValue;
}
else if (defaultValue != null)
{
coercedValues[argumentName] = defaultValue;
}
else if (argumentType.kind == __TypeKind.NON_NULL)
{
Error(
$"Required field '{argumentName}' refered by variable '{variableName}' is not present in document",
field);
}
else
{
continue;
}
}
else if (value?.value() == null)
{
if (defaultValue != null)
{
coercedValues[argumentName] = defaultValue;
}
else if (argumentType.kind == __TypeKind.NON_NULL)
{
Error($"Required field '{argumentName}' is not present in document", field);
}
else
{
continue;
}
}
else
{
coercedValues[argumentName] = CoerceDocumentValue(argumentType, argumentName, value.value());
}
}
return(coercedValues);
}
