Source file src/github.com/vektah/gqlparser/v2/validator/rules/unique_fragment_names.go

Documentation: github.com/vektah/gqlparser/v2/validator/rules

     1  package validator
     2  
     3  import (
     4  	"github.com/vektah/gqlparser/v2/ast"
     5  
     6  	//nolint:revive // Validator rules each use dot imports for convenience.
     7  	. "github.com/vektah/gqlparser/v2/validator"
     8  )
     9  
    10  func init() {
    11  	AddRule("UniqueFragmentNames", func(observers *Events, addError AddErrFunc) {
    12  		seenFragments := map[string]bool{}
    13  
    14  		observers.OnFragment(func(walker *Walker, fragment *ast.FragmentDefinition) {
    15  			if seenFragments[fragment.Name] {
    16  				addError(
    17  					Message(`There can be only one fragment named "%s".`, fragment.Name),
    18  					At(fragment.Position),
    19  				)
    20  			}
    21  			seenFragments[fragment.Name] = true
    22  		})
    23  	})
    24  }
    25  

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