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use crate::ast::ast_node::append_span_source_slice;
use crate::ast::AstNode;
use crate::ast::DelimiterPair;
use crate::ast::DirectiveLocation;
use crate::ast::InputValueDefinition;
use crate::ast::Name;
use crate::ast::StringValue;
use crate::ByteSpan;
use crate::SourceMap;
use crate::SourceSpan;
use crate::token::GraphQLToken;
use inherent::inherent;
/// A directive definition.
///
/// See
/// [Directive Definitions](https://spec.graphql.org/September2025/#sec-Type-System.Directives)
/// in the spec.
///
/// # Spec invariant
///
/// The spec grammar requires at least one directive
/// location. For a spec-valid node, `locations` is
/// always non-empty.
#[derive(Clone, Debug, PartialEq)]
pub struct DirectiveDefinition<'src> {
pub arguments: Vec<InputValueDefinition<'src>>,
pub description: Option<StringValue<'src>>,
pub locations: Vec<DirectiveLocation<'src>>,
pub name: Name<'src>,
pub repeatable: bool,
pub span: ByteSpan,
pub syntax: Option<Box<DirectiveDefinitionSyntax<'src>>>,
}
/// Syntax detail for a [`DirectiveDefinition`].
#[derive(Clone, Debug, PartialEq)]
pub struct DirectiveDefinitionSyntax<'src> {
pub argument_parens: Option<DelimiterPair<'src>>,
pub at_sign: GraphQLToken<'src>,
pub directive_keyword: GraphQLToken<'src>,
pub on_keyword: GraphQLToken<'src>,
pub repeatable_keyword: Option<GraphQLToken<'src>>,
}
impl<'src> DirectiveDefinition<'src> {
/// Returns the name of this directive definition as a string
/// slice.
///
/// Convenience accessor for `self.name.value`.
#[inline]
pub fn name_value(&self) -> &str {
self.name.value.as_ref()
}
}
#[inherent]
impl AstNode for DirectiveDefinition<'_> {
/// See [`AstNode::append_source()`](crate::ast::AstNode::append_source).
pub fn append_source(
&self,
sink: &mut String,
source: Option<&str>,
) {
if let Some(src) = source {
append_span_source_slice(
self.span, sink, src,
);
}
}
/// Returns this directive definition's byte-offset span within the
/// source text.
///
/// The returned [`ByteSpan`] can be resolved to line/column
/// positions via [`source_span()`](Self::source_span) or
/// [`ByteSpan::resolve()`].
#[inline]
pub fn byte_span(&self) -> ByteSpan {
self.span
}
/// Resolves this directive definition's position to line/column
/// coordinates using the given [`SourceMap`].
///
/// Returns [`None`] if the byte offsets cannot be resolved
/// (e.g. the span was synthetically constructed without
/// valid position data).
#[inline]
pub fn source_span(
&self,
source_map: &SourceMap,
) -> Option<SourceSpan> {
self.byte_span().resolve(source_map)
}
}