Struct VariableDefinition 

pub struct VariableDefinition<'src> {
    pub default_value: Option<Value<'src>>,
    pub description: Option<StringValue<'src>>,
    pub directives: Vec<DirectiveAnnotation<'src>>,
    pub span: ByteSpan,
    pub syntax: Option<Box<VariableDefinitionSyntax<'src>>>,
    pub var_type: TypeAnnotation<'src>,
    pub variable: Name<'src>,
}

A variable definition within an operation’s variable list (e.g. $id: ID! = "default").

See Variable Definitions in the spec.

Fields

default_value: Option<Value<'src>>

description: Option<StringValue<'src>>

directives: Vec<DirectiveAnnotation<'src>>

span: ByteSpan

syntax: Option<Box<VariableDefinitionSyntax<'src>>>

var_type: TypeAnnotation<'src>

variable: Name<'src>

Implementations

impl VariableDefinition<'_>

pub fn append_source(&self, sink: &mut String, source: Option<&str>)

See AstNode::append_source().

pub fn byte_span(&self) -> ByteSpan

Returns this variable definition’s byte-offset span within the source text.

The returned ByteSpan can be resolved to line/column positions via source_span() or ByteSpan::resolve().

pub fn source_span(&self, source_map: &SourceMap<'_>) -> Option<SourceSpan>

Resolves this variable 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).

Trait Implementations

impl AstNode for VariableDefinition<'_>

fn append_source(&self, sink: &mut String, source: Option<&str>)

See AstNode::append_source().

fn byte_span(&self) -> ByteSpan

Returns this variable definition’s byte-offset span within the source text.

The returned ByteSpan can be resolved to line/column positions via source_span() or ByteSpan::resolve().

fn source_span(&self, source_map: &SourceMap<'_>) -> Option<SourceSpan>

Resolves this variable 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).

fn to_source(&self, source: Option<&str>) -> String

Return this node as a source string.

impl<'src> Clone for VariableDefinition<'src>

fn clone(&self) -> VariableDefinition<'src>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'src> Debug for VariableDefinition<'src>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'src> PartialEq for VariableDefinition<'src>

fn eq(&self, other: &VariableDefinition<'src>) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'src> StructuralPartialEq for VariableDefinition<'src>