hamelin_lib 0.22.2

Core library for Hamelin query language
Documentation 
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//! Bytewise binary comparison operators, independent of IP address semantics.

use std::any::TypeId;

use crate::func::def::{FunctionDef, ParameterBindingProvider, Parameters};
use crate::operator::Operator;
use crate::types::matcher::ExactMatcher;
use crate::types::{Type, BINARY, BOOLEAN};

#[derive(Default, Clone)]
pub struct BinaryEq;

impl FunctionDef for BinaryEq {
    fn name(&self) -> &'static str {
        Operator::Eq.str()
    }

    fn parameters(&self) -> Parameters {
        Parameters::new()
            .with("left", ExactMatcher::of(BINARY))
            .with("right", ExactMatcher::of(BINARY))
    }

    fn return_type(&self, _bindings: &dyn ParameterBindingProvider) -> anyhow::Result<Type> {
        Ok(BOOLEAN)
    }

    fn type_id(&self) -> TypeId {
        TypeId::of::<Self>()
    }
}

#[derive(Default, Clone)]
pub struct BinaryNeq;

impl FunctionDef for BinaryNeq {
    fn name(&self) -> &'static str {
        Operator::Neq.str()
    }

    fn parameters(&self) -> Parameters {
        Parameters::new()
            .with("left", ExactMatcher::of(BINARY))
            .with("right", ExactMatcher::of(BINARY))
    }

    fn return_type(&self, _bindings: &dyn ParameterBindingProvider) -> anyhow::Result<Type> {
        Ok(BOOLEAN)
    }

    fn type_id(&self) -> TypeId {
        TypeId::of::<Self>()
    }
}

#[derive(Default, Clone)]
pub struct BinaryLt;

impl FunctionDef for BinaryLt {
    fn name(&self) -> &'static str {
        Operator::Lt.str()
    }

    fn parameters(&self) -> Parameters {
        Parameters::new()
            .with("left", ExactMatcher::of(BINARY))
            .with("right", ExactMatcher::of(BINARY))
    }

    fn return_type(&self, _bindings: &dyn ParameterBindingProvider) -> anyhow::Result<Type> {
        Ok(BOOLEAN)
    }

    fn type_id(&self) -> TypeId {
        TypeId::of::<Self>()
    }
}

#[derive(Default, Clone)]
pub struct BinaryLte;

impl FunctionDef for BinaryLte {
    fn name(&self) -> &'static str {
        Operator::Lte.str()
    }

    fn parameters(&self) -> Parameters {
        Parameters::new()
            .with("left", ExactMatcher::of(BINARY))
            .with("right", ExactMatcher::of(BINARY))
    }

    fn return_type(&self, _bindings: &dyn ParameterBindingProvider) -> anyhow::Result<Type> {
        Ok(BOOLEAN)
    }

    fn type_id(&self) -> TypeId {
        TypeId::of::<Self>()
    }
}

#[derive(Default, Clone)]
pub struct BinaryGt;

impl FunctionDef for BinaryGt {
    fn name(&self) -> &'static str {
        Operator::Gt.str()
    }

    fn parameters(&self) -> Parameters {
        Parameters::new()
            .with("left", ExactMatcher::of(BINARY))
            .with("right", ExactMatcher::of(BINARY))
    }

    fn return_type(&self, _bindings: &dyn ParameterBindingProvider) -> anyhow::Result<Type> {
        Ok(BOOLEAN)
    }

    fn type_id(&self) -> TypeId {
        TypeId::of::<Self>()
    }
}

#[derive(Default, Clone)]
pub struct BinaryGte;

impl FunctionDef for BinaryGte {
    fn name(&self) -> &'static str {
        Operator::Gte.str()
    }

    fn parameters(&self) -> Parameters {
        Parameters::new()
            .with("left", ExactMatcher::of(BINARY))
            .with("right", ExactMatcher::of(BINARY))
    }

    fn return_type(&self, _bindings: &dyn ParameterBindingProvider) -> anyhow::Result<Type> {
        Ok(BOOLEAN)
    }

    fn type_id(&self) -> TypeId {
        TypeId::of::<Self>()
    }
}