graphql-tools 0.5.4

Tools for working with GraphQL in Rust
Documentation 
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use crate::{ast::OperationVisitorContext, validation::utils::ValidationErrorContext};

pub trait ValidationRule: Send + Sync {
    fn validate(
        &self,
        _ctx: &mut OperationVisitorContext<'_>,
        _error_collector: &mut ValidationErrorContext,
    );

    fn error_code<'a>(&self) -> &'a str;
}