gitql-core 0.20.0

GitQL Core components
Documentation 
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use std::any::Any;
use std::cmp::Ordering;

use gitql_ast::types::interval::IntervalType;
use gitql_ast::types::DataType;
use gitql_ast::Interval;

use super::base::Value;
use super::boolean::BoolValue;

#[derive(Clone)]
pub struct IntervalValue {
    pub interval: Interval,
}

impl IntervalValue {
    pub fn new(interval: Interval) -> Self {
        IntervalValue { interval }
    }
}

impl Value for IntervalValue {
    fn literal(&self) -> String {
        self.interval.to_string()
    }

    fn equals(&self, other: &Box<dyn Value>) -> bool {
        if let Some(other_date) = other.as_any().downcast_ref::<IntervalValue>() {
            return self.interval == other_date.interval;
        }
        false
    }

    fn compare(&self, other: &Box<dyn Value>) -> Option<Ordering> {
        if let Some(other_interval) = other.as_any().downcast_ref::<IntervalValue>() {
            return self.interval.partial_cmp(&other_interval.interval);
        }
        None
    }

    fn data_type(&self) -> Box<dyn DataType> {
        Box::new(IntervalType)
    }

    fn as_any(&self) -> &dyn Any {
        self
    }

    fn eq_op(&self, other: &Box<dyn Value>) -> Result<Box<dyn Value>, String> {
        if let Some(other_interval) = other.as_any().downcast_ref::<IntervalValue>() {
            let is_equals = self.interval == other_interval.interval;
            return Ok(Box::new(BoolValue::new(is_equals)));
        }
        Err("Unexpected type to perform `=` with".to_string())
    }

    fn bang_eq_op(&self, other: &Box<dyn Value>) -> Result<Box<dyn Value>, String> {
        if let Some(other_interval) = other.as_any().downcast_ref::<IntervalValue>() {
            let is_not_equals = self.interval != other_interval.interval;
            return Ok(Box::new(BoolValue::new(is_not_equals)));
        }
        Err("Unexpected type to perform `!=` with".to_string())
    }

    fn gt_op(&self, other: &Box<dyn Value>) -> Result<Box<dyn Value>, String> {
        if let Some(other_interval) = other.as_any().downcast_ref::<IntervalValue>() {
            let result = self.interval.gt(&other_interval.interval);
            return Ok(Box::new(BoolValue::new(result)));
        }
        Err("Unexpected type to perform `>` with".to_string())
    }

    fn gte_op(&self, other: &Box<dyn Value>) -> Result<Box<dyn Value>, String> {
        if let Some(other_interval) = other.as_any().downcast_ref::<IntervalValue>() {
            let result = self.interval.ge(&other_interval.interval);
            return Ok(Box::new(BoolValue::new(result)));
        }
        Err("Unexpected type to perform `>=` with".to_string())
    }

    fn lt_op(&self, other: &Box<dyn Value>) -> Result<Box<dyn Value>, String> {
        if let Some(other_interval) = other.as_any().downcast_ref::<IntervalValue>() {
            let result = self.interval.lt(&other_interval.interval);
            return Ok(Box::new(BoolValue::new(result)));
        }
        Err("Unexpected type to perform `<` with".to_string())
    }

    fn lte_op(&self, other: &Box<dyn Value>) -> Result<Box<dyn Value>, String> {
        if let Some(other_interval) = other.as_any().downcast_ref::<IntervalValue>() {
            let result = self.interval.le(&other_interval.interval);
            return Ok(Box::new(BoolValue::new(result)));
        }
        Err("Unexpected type to perform `<=` with".to_string())
    }

    fn add_op(&self, other: &Box<dyn Value>) -> Result<Box<dyn Value>, String> {
        if let Some(other_interval) = other.as_any().downcast_ref::<IntervalValue>() {
            let interval = self.interval.add(&other_interval.interval)?;
            return Ok(Box::new(IntervalValue::new(interval)));
        }
        Err("Unexpected type to perform `+` with".to_string())
    }

    fn sub_op(&self, other: &Box<dyn Value>) -> Result<Box<dyn Value>, String> {
        if let Some(other_interval) = other.as_any().downcast_ref::<IntervalValue>() {
            let interval = self.interval.sub(&other_interval.interval)?;
            return Ok(Box::new(IntervalValue::new(interval)));
        }
        Err("Unexpected type to perform `-` with".to_string())
    }

    fn mul_op(&self, other: &Box<dyn Value>) -> Result<Box<dyn Value>, String> {
        if let Some(value) = other.as_int() {
            let interval = self.interval.mul(value)?;
            return Ok(Box::new(IntervalValue::new(interval)));
        }
        Err("Unexpected type to perform `*` with".to_string())
    }

    fn div_op(&self, other: &Box<dyn Value>) -> Result<Box<dyn Value>, String> {
        if let Some(value) = other.as_int() {
            let interval = self.interval.div(value)?;
            return Ok(Box::new(IntervalValue::new(interval)));
        }
        Err("Unexpected type to perform `/` with".to_string())
    }
}