use reifydb_core::value::column::{ColumnWithName, buffer::ColumnBuffer, columns::Columns};
use reifydb_type::{
util::bitvec::BitVec,
value::{constraint::bytes::MaxBytes, container::utf8::Utf8Container, r#type::Type},
};
use crate::routine::{Function, FunctionKind, Routine, RoutineInfo, context::FunctionContext, error::RoutineError};
pub struct TextReplace {
info: RoutineInfo,
}
impl Default for TextReplace {
fn default() -> Self {
Self::new()
}
}
impl TextReplace {
pub fn new() -> Self {
Self {
info: RoutineInfo::new("text::replace"),
}
}
}
impl<'a> Routine<FunctionContext<'a>> for TextReplace {
fn info(&self) -> &RoutineInfo {
&self.info
}
fn return_type(&self, _input_types: &[Type]) -> Type {
Type::Utf8
}
fn execute(&self, ctx: &mut FunctionContext<'a>, args: &Columns) -> Result<Columns, RoutineError> {
if args.len() != 3 {
return Err(RoutineError::FunctionArityMismatch {
function: ctx.fragment.clone(),
expected: 3,
actual: args.len(),
});
}
let str_col = &args[0];
let from_col = &args[1];
let to_col = &args[2];
let (str_data, str_bv) = str_col.unwrap_option();
let (from_data, from_bv) = from_col.unwrap_option();
let (to_data, to_bv) = to_col.unwrap_option();
let row_count = str_data.len();
match (str_data, from_data, to_data) {
(
ColumnBuffer::Utf8 {
container: str_container,
..
},
ColumnBuffer::Utf8 {
container: from_container,
..
},
ColumnBuffer::Utf8 {
container: to_container,
..
},
) => {
let mut result_data = Vec::with_capacity(row_count);
for i in 0..row_count {
if str_container.is_defined(i)
&& from_container.is_defined(i) && to_container.is_defined(i)
{
let s = str_container.get(i).unwrap();
let from = from_container.get(i).unwrap();
let to = to_container.get(i).unwrap();
result_data.push(s.replace(from, to));
} else {
result_data.push(String::new());
}
}
let result_col_data = ColumnBuffer::Utf8 {
container: Utf8Container::new(result_data),
max_bytes: MaxBytes::MAX,
};
let mut combined_bv: Option<BitVec> = None;
for bv in [str_bv, from_bv, to_bv].into_iter().flatten() {
combined_bv = Some(match combined_bv {
Some(existing) => existing.and(bv),
None => bv.clone(),
});
}
let final_data = match combined_bv {
Some(bv) => ColumnBuffer::Option {
inner: Box::new(result_col_data),
bitvec: bv,
},
None => result_col_data,
};
Ok(Columns::new(vec![ColumnWithName::new(ctx.fragment.clone(), final_data)]))
}
(
ColumnBuffer::Utf8 {
..
},
ColumnBuffer::Utf8 {
..
},
other,
) => Err(RoutineError::FunctionInvalidArgumentType {
function: ctx.fragment.clone(),
argument_index: 2,
expected: vec![Type::Utf8],
actual: other.get_type(),
}),
(
ColumnBuffer::Utf8 {
..
},
other,
_,
) => Err(RoutineError::FunctionInvalidArgumentType {
function: ctx.fragment.clone(),
argument_index: 1,
expected: vec![Type::Utf8],
actual: other.get_type(),
}),
(other, _, _) => Err(RoutineError::FunctionInvalidArgumentType {
function: ctx.fragment.clone(),
argument_index: 0,
expected: vec![Type::Utf8],
actual: other.get_type(),
}),
}
}
}
impl Function for TextReplace {
fn kinds(&self) -> &[FunctionKind] {
&[FunctionKind::Scalar]
}
}