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Add a protoflow_blocks::System::const_bytes helper #30

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artob merged 1 commit into from
Dec 17, 2024
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Add a protoflow_blocks::System::const_bytes helper #30

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4 changes: 3 additions & 1 deletion lib/protoflow-blocks/src/blocks/core.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -2,7 +2,7 @@

pub mod core {
use super::{
prelude::{vec, Box, Cow, Named, Vec},
prelude::{vec, Box, Bytes, Cow, Named, Vec},
BlockConnections, BlockInstantiation, InputPortName, OutputPortName, System,
};
use crate::{
Expand All @@ -14,6 +14,8 @@ pub mod core {
pub trait CoreBlocks {
fn buffer<T: Message + Into<T> + 'static>(&mut self) -> Buffer<T>;

fn const_bytes<T: Into<Bytes>>(&mut self, value: T) -> Const<Bytes>;

fn const_string(&mut self, value: impl ToString) -> Const<String>;

fn count<T: Message + 'static>(&mut self) -> Count<T>;
Expand Down
23 changes: 22 additions & 1 deletion lib/protoflow-blocks/src/system.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,7 @@
#![allow(dead_code)]

use crate::{
prelude::{fmt, Arc, Box, FromStr, Rc, String, ToString},
prelude::{fmt, Arc, Box, Bytes, FromStr, Rc, String, ToString},
types::{DelayType, Encoding},
AllBlocks, Buffer, ConcatStrings, Const, CoreBlocks, Count, Decode, DecodeCsv, DecodeHex,
DecodeJson, Delay, Drop, Encode, EncodeCsv, EncodeHex, EncodeJson, FlowBlocks, HashBlocks,
Expand Down Expand Up @@ -133,6 +133,11 @@ impl CoreBlocks for System {
self.0.block(Buffer::<T>::with_system(self))
}

fn const_bytes<T: Into<Bytes>>(&mut self, value: T) -> Const<Bytes> {
self.0
.block(Const::<Bytes>::with_system(self, value.into()))
}

fn const_string(&mut self, value: impl ToString) -> Const<String> {
self.0
.block(Const::<String>::with_system(self, value.to_string()))
Expand Down Expand Up @@ -308,3 +313,19 @@ impl TextBlocks for System {
.block(SplitString::with_system(self, Some(delimiter.to_string())))
}
}

#[cfg(test)]
mod tests {
use super::*;

#[test]
fn const_bytes_accepts_various_types() {
let _ = System::build(|s| {
let _ = s.const_bytes("Hello world");
let _ = s.const_bytes("Hello world".to_string());
let _ = s.const_bytes(&b"Hello world"[..]);
let _ = s.const_bytes(b"Hello world".to_vec());
let _ = s.const_bytes(Bytes::from("Hello world"));
});
}
}