Struct UniqueVariableNames

pub struct UniqueVariableNames<'a> { /* private fields */ }

Validates that no operation the document defines has duplicate variable names in its variable definitions.

See ValidationRule Reference

Trait Implementations

impl<'a> Default for UniqueVariableNames<'a>

fn default() -> UniqueVariableNames<'a>

Returns the “default value” for a type.

impl<'a> ValidationRule<'a> for UniqueVariableNames<'a>

fn validate(ctx: &'a ASTContext, document: &'a Document<'a>) -> Result<()>

Run this ValidationRule against the given document and return a result which errors if the rule fails on the document.

impl<'a> Visitor<'a, ValidationContext<'a>> for UniqueVariableNames<'a>

fn enter_operation( &mut self, _ctx: &mut ValidationContext<'a>, _operation: &'a OperationDefinition<'a>, _info: &VisitInfo, ) -> VisitFlow

Called when an OperationDefinition node is visited and before its child nodes are visited.

fn enter_variable_definition( &mut self, ctx: &mut ValidationContext<'a>, var_def: &'a VariableDefinition<'a>, _info: &VisitInfo, ) -> VisitFlow

Called when a VariableDefinition node is visited and before its child nodes are visited.

fn enter_selection_set( &mut self, _ctx: &mut ValidationContext<'a>, _selection_set: &'a SelectionSet<'_>, _info: &VisitInfo, ) -> VisitFlow

Called when a SelectionSet node is visited and before its child nodes are visited.

fn enter_directive( &mut self, _ctx: &mut ValidationContext<'a>, _fragment: &'a Directive<'_>, _info: &VisitInfo, ) -> VisitFlow

Called when a Directive node is visited and before its child nodes are visited.

fn enter_fragment( &mut self, _ctx: &mut ValidationContext<'a>, _fragment: &'a FragmentDefinition<'_>, _info: &VisitInfo, ) -> VisitFlow

Called when a FragmentDefinition node is visited and before its child nodes are visited.

fn compose<V: Visitor<'a, Context>>( self, other: V, ) -> ComposedVisitor<'a, Context, Self, V>

Combines two visitors into one that will run both the original and passed visitor concurrently.

fn enter_document( &mut self, _ctx: &mut Context, _document: &'a Document<'a>, _info: &VisitInfo, ) -> VisitFlow

Called when a Document is visited and before its child nodes are visited.

fn leave_document( &mut self, _ctx: &mut Context, _document: &'a Document<'a>, _info: &VisitInfo, ) -> VisitFlow

Called after a Document and its child nodes were visited.

fn leave_operation( &mut self, _ctx: &mut Context, _operation: &'a OperationDefinition<'a>, _info: &VisitInfo, ) -> VisitFlow

Called after an OperationDefinition and its child node were visited.

fn leave_fragment( &mut self, _ctx: &mut Context, _fragment: &'a FragmentDefinition<'a>, _info: &VisitInfo, ) -> VisitFlow

Called after a FragmentDefinition node and its child nodes were visited.

fn leave_variable_definition( &mut self, _ctx: &mut Context, _var_def: &'a VariableDefinition<'a>, _info: &VisitInfo, ) -> VisitFlow

Called after a VariableDefinition node and its child nodes were visited.

fn leave_selection_set( &mut self, _ctx: &mut Context, _selection_set: &'a SelectionSet<'a>, _info: &VisitInfo, ) -> VisitFlow

Called after a SelectionSet node and its child nodes were visited.

fn enter_fragment_spread( &mut self, _ctx: &mut Context, _fragment_spread: &'a FragmentSpread<'a>, _info: &VisitInfo, ) -> VisitFlow

Called when a FragmentSpread node is visited and before its child nodes are visited.

fn leave_fragment_spread( &mut self, _ctx: &mut Context, _fragment_spread: &'a FragmentSpread<'a>, _info: &VisitInfo, ) -> VisitFlow

Called after a FragmentSpread node and its child nodes were visited.

fn enter_inline_fragment( &mut self, _ctx: &mut Context, _inline_fragment: &'a InlineFragment<'a>, _info: &VisitInfo, ) -> VisitFlow

Called when an InlineFragment node is visited and before its child nodes are visited.

fn leave_inline_fragment( &mut self, _ctx: &mut Context, _inline_fragment: &'a InlineFragment<'a>, _info: &VisitInfo, ) -> VisitFlow

Called after an InlineFragment node and its child nodes were visited.

fn enter_field( &mut self, _ctx: &mut Context, _field: &'a Field<'a>, _info: &VisitInfo, ) -> VisitFlow

Called when a Field node is visited and before its child nodes are visited.

fn leave_field( &mut self, _ctx: &mut Context, _field: &'a Field<'a>, _info: &VisitInfo, ) -> VisitFlow

Called after a Field node and its child nodes were visited.

fn leave_directive( &mut self, _ctx: &mut Context, _directive: &'a Directive<'a>, _info: &VisitInfo, ) -> VisitFlow

Called after a Directive node and its child nodes were visited.

fn enter_argument( &mut self, _ctx: &mut Context, _argument: &'a Argument<'a>, _info: &VisitInfo, ) -> VisitFlow

Called when an Argument node is visited and before its child nodes are visited.

fn leave_argument( &mut self, _ctx: &mut Context, _argument: &'a Argument<'a>, _info: &VisitInfo, ) -> VisitFlow

Called after an Argument node and its child nodes were visited.