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use crate::{
alphanumeric::prelude::*,
core::prelude::*,
errors::prelude::*,
};
use crate::prelude::Numeric;
/// `ArrayTrait` - Alphanumeric Array operations
pub trait ArrayStringIndexing<N: Alphanumeric> where Self: Sized + Clone {
/// Return string.len() element-wise
///
/// # Examples
///
/// ```
/// use arr_rs::prelude::*;
///
/// let expected = Array::flat(vec![6, 9, 3]);
/// let arr = Array::flat(vec!["AaAaAa".to_string(), "aAaAaAacc".to_string(), "abc".to_string()]);
/// assert_eq!(expected, arr.str_len());
/// ```
///
/// # Errors
///
/// may returns `ArrayError`
fn str_len(&self) -> Result<Array<usize>, ArrayError>;
/// Returns an array with the number of non-overlapping occurrences of substring sub
///
/// # Arguments
///
/// * `sub` - substring to search for
///
/// # Examples
///
/// ```
/// use arr_rs::prelude::*;
///
/// let expected = Array::flat(vec![3, 2, 1]);
/// let arr = Array::flat(vec!["AaAaAa".to_string(), "aAaAaA".to_string(), "bbAabb".to_string()]);
/// assert_eq!(expected, arr.count(&Array::single("Aa".to_string()).unwrap()));
///
/// let expected = Array::flat(vec![1]);
/// let arr = Array::flat(vec!["AaAaAa".to_string()]);
/// assert_eq!(expected, arr.count(&Array::single("AaAa".to_string()).unwrap()));
/// ```
///
/// # Errors
///
/// may returns `ArrayError`
fn count(&self, sub: &Array<N>) -> Result<Array<usize>, ArrayError>;
/// Checks if string element starts with prefix
///
/// # Arguments
///
/// * `prefix` - substring to search for
///
/// # Examples
///
/// ```
/// use arr_rs::prelude::*;
///
/// let expected = Array::flat(vec![true, false, false]);
/// let arr = Array::flat(vec!["AaAaAa".to_string(), "aAaAaA".to_string(), "bbAabb".to_string()]);
/// assert_eq!(expected, arr.starts_with(&Array::single("Aa".to_string()).unwrap()));
/// ```
///
/// # Errors
///
/// may returns `ArrayError`
fn starts_with(&self, prefix: &Array<N>) -> Result<Array<bool>, ArrayError>;
/// Checks if string element ends with suffix
///
/// # Arguments
///
/// * `suffix` - substring to search for
///
/// # Examples
///
/// ```
/// use arr_rs::prelude::*;
///
/// let expected = Array::flat(vec![false, true, false]);
/// let arr = Array::flat(vec!["AaAaAa".to_string(), "aAaAaA".to_string(), "bbAabb".to_string()]);
/// assert_eq!(expected, arr.ends_with(&Array::single("aA".to_string()).unwrap()));
/// ```
///
/// # Errors
///
/// may returns `ArrayError`
fn ends_with(&self, suffix: &Array<N>) -> Result<Array<bool>, ArrayError>;
/// For each element, return the lowest index in the string where substring sub is found
///
/// # Arguments
///
/// * `sub` - substring to search for
///
/// # Examples
///
/// ```
/// use arr_rs::prelude::*;
///
/// let expected = Array::flat(vec![1, 0, -1]);
/// let arr = Array::flat(vec!["AaAaAa".to_string(), "aAaAaA".to_string(), "bbAabb".to_string()]);
/// assert_eq!(expected, arr.find(&Array::single("aA".to_string()).unwrap()));
/// ```
///
/// # Errors
///
/// may returns `ArrayError`
fn find(&self, sub: &Array<N>) -> Result<Array<isize>, ArrayError>;
/// For each element, return the highest index in the string where substring sub is found
///
/// # Arguments
///
/// * `sub` - substring to search for
///
/// # Examples
///
/// ```
/// use arr_rs::prelude::*;
///
/// let expected = Array::flat(vec![3, 4, -1]);
/// let arr = Array::flat(vec!["AaAaAa".to_string(), "aAaAaA".to_string(), "bbAabb".to_string()]);
/// assert_eq!(expected, arr.rfind(&Array::single("aA".to_string()).unwrap()));
/// ```
///
/// # Errors
///
/// may returns `ArrayError`
fn rfind(&self, sub: &Array<N>) -> Result<Array<isize>, ArrayError>;
/// For each element, return the lowest index in the string where substring sub is found;
/// alias on `find`
///
/// # Arguments
///
/// * `sub` - substring to search for
///
/// # Examples
///
/// ```
/// use arr_rs::prelude::*;
///
/// let expected = Array::flat(vec![1, 0, -1]);
/// let arr = Array::flat(vec!["AaAaAa".to_string(), "aAaAaA".to_string(), "bbAabb".to_string()]);
/// assert_eq!(expected, arr.index(&Array::single("aA".to_string()).unwrap()));
/// ```
///
/// # Errors
///
/// may returns `ArrayError`
fn index(&self, sub: &Array<N>) -> Result<Array<isize>, ArrayError>;
/// For each element, return the highest index in the string where substring sub is found;
/// alias on `rfind`
///
/// # Arguments
///
/// * `sub` - substring to search for
///
/// # Examples
///
/// ```
/// use arr_rs::prelude::*;
///
/// let expected = Array::flat(vec![3, 4, -1]);
/// let arr = Array::flat(vec!["AaAaAa".to_string(), "aAaAaA".to_string(), "bbAabb".to_string()]);
/// assert_eq!(expected, arr.rindex(&Array::single("aA".to_string()).unwrap()));
/// ```
///
/// # Errors
///
/// may returns `ArrayError`
fn rindex(&self, sub: &Array<N>) -> Result<Array<isize>, ArrayError>;
}
impl <N: Alphanumeric> ArrayStringIndexing<N> for Array<N> {
fn str_len(&self) -> Result<Array<usize>, ArrayError> {
let elements = self.clone().into_iter()
.map(|item| item.to_string().len())
.collect();
Array::new(elements, self.get_shape()?)
}
fn count(&self, sub: &Self) -> Result<Array<usize>, ArrayError> {
let broadcasted = self.broadcast(sub)?;
let elements = broadcasted.clone().into_iter()
.map(|item| item.0._count(item.1.to_string().as_str()))
.collect();
Array::new(elements, broadcasted.get_shape()?)
}
fn starts_with(&self, prefix: &Self) -> Result<Array<bool>, ArrayError> {
let broadcasted = self.broadcast(prefix)?;
let elements = broadcasted.clone().into_iter()
.map(|item| item.0.to_string().starts_with(&item.1.to_string()))
.collect();
Array::new(elements, broadcasted.get_shape()?)
}
fn ends_with(&self, suffix: &Self) -> Result<Array<bool>, ArrayError> {
let broadcasted = self.broadcast(suffix)?;
let elements = broadcasted.clone().into_iter()
.map(|item| item.0.to_string().ends_with(&item.1.to_string()))
.collect();
Array::new(elements, broadcasted.get_shape()?)
}
fn find(&self, sub: &Self) -> Result<Array<isize>, ArrayError> {
let broadcasted = self.broadcast(sub)?;
let elements = broadcasted.clone().into_iter()
.map(|item| item.0
.to_string()
.find(&item.1.to_string())
.map_or(-1, |idx| idx.to_isize()))
.collect();
Array::new(elements, broadcasted.get_shape()?)
}
fn rfind(&self, sub: &Self) -> Result<Array<isize>, ArrayError> {
let broadcasted = self.broadcast(sub)?;
let elements = broadcasted.clone().into_iter()
.map(|item| item.0
.to_string()
.rfind(&item.1.to_string())
.map_or(-1, |idx| idx.to_isize()))
.collect();
Array::new(elements, broadcasted.get_shape()?)
}
fn index(&self, sub: &Self) -> Result<Array<isize>, ArrayError> {
self.find(sub)
}
fn rindex(&self, sub: &Self) -> Result<Array<isize>, ArrayError> {
self.rfind(sub)
}
}
impl <N: Alphanumeric> ArrayStringIndexing<N> for Result<Array<N>, ArrayError> {
fn str_len(&self) -> Result<Array<usize>, ArrayError> {
self.clone()?.str_len()
}
fn count(&self, sub: &Array<N>) -> Result<Array<usize>, ArrayError> {
self.clone()?.count(sub)
}
fn starts_with(&self, prefix: &Array<N>) -> Result<Array<bool>, ArrayError> {
self.clone()?.starts_with(prefix)
}
fn ends_with(&self, suffix: &Array<N>) -> Result<Array<bool>, ArrayError> {
self.clone()?.ends_with(suffix)
}
fn find(&self, sub: &Array<N>) -> Result<Array<isize>, ArrayError> {
self.clone()?.find(sub)
}
fn rfind(&self, sub: &Array<N>) -> Result<Array<isize>, ArrayError> {
self.clone()?.rfind(sub)
}
fn index(&self, sub: &Array<N>) -> Result<Array<isize>, ArrayError> {
self.clone()?.index(sub)
}
fn rindex(&self, sub: &Array<N>) -> Result<Array<isize>, ArrayError> {
self.clone()?.rindex(sub)
}
}