gitql-ast 0.39.0

GitQL Abstract syntax tree (AST)
Documentation 
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use std::any::Any;

use crate::expression::Expr;
use crate::expression::StringExpr;
use crate::format_checker::is_valid_time_format;
use crate::types::array::ArrayType;

use super::base::DataType;

#[derive(Clone)]
pub struct TimeType;

impl DataType for TimeType {
    fn literal(&self) -> String {
        "Time".to_string()
    }

    fn equals(&self, other: &Box<dyn DataType>) -> bool {
        other.is_any() || other.is_time() || other.is_variant_with(|t| t.is_time())
    }

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

    fn can_perform_eq_op_with(&self) -> Vec<Box<dyn DataType>> {
        vec![Box::new(TimeType)]
    }

    fn can_perform_group_eq_op_with(&self) -> Vec<Box<dyn DataType>> {
        vec![Box::new(ArrayType::new(Box::new(TimeType)))]
    }

    fn can_perform_bang_eq_op_with(&self) -> Vec<Box<dyn DataType>> {
        vec![Box::new(TimeType)]
    }

    fn can_perform_group_bang_eq_op_with(&self) -> Vec<Box<dyn DataType>> {
        vec![Box::new(ArrayType::new(Box::new(TimeType)))]
    }

    fn can_perform_gt_op_with(&self) -> Vec<Box<dyn DataType>> {
        vec![Box::new(TimeType)]
    }

    fn can_perform_group_gt_op_with(&self) -> Vec<Box<dyn DataType>> {
        vec![Box::new(ArrayType::new(Box::new(TimeType)))]
    }

    fn can_perform_gte_op_with(&self) -> Vec<Box<dyn DataType>> {
        vec![Box::new(TimeType)]
    }

    fn can_perform_group_gte_op_with(&self) -> Vec<Box<dyn DataType>> {
        vec![Box::new(ArrayType::new(Box::new(TimeType)))]
    }

    fn can_perform_lt_op_with(&self) -> Vec<Box<dyn DataType>> {
        vec![Box::new(TimeType)]
    }

    fn can_perform_group_lt_op_with(&self) -> Vec<Box<dyn DataType>> {
        vec![Box::new(ArrayType::new(Box::new(TimeType)))]
    }

    fn can_perform_lte_op_with(&self) -> Vec<Box<dyn DataType>> {
        vec![Box::new(TimeType)]
    }

    fn can_perform_group_lte_op_with(&self) -> Vec<Box<dyn DataType>> {
        vec![Box::new(ArrayType::new(Box::new(TimeType)))]
    }

    fn has_implicit_cast_from(&self, expr: &Box<dyn Expr>) -> bool {
        if let Some(string_expr) = expr.as_any().downcast_ref::<StringExpr>() {
            return is_valid_time_format(&string_expr.value);
        }
        false
    }
}