tfdeploy 0.0.1

Tiny, no-nonsense, self contained, TensorFlow inference
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use std::cell;
use {Matrix, Result};
use super::Op;

pub struct Placeholder {
    value: cell::Cell<Option<Matrix>>,
}

impl Placeholder {
    pub fn build(_pb: &::tfpb::node_def::NodeDef) -> Result<Placeholder> {
        Ok(Placeholder { value: None.into() })
    }
}

impl Placeholder {
    pub fn set(&self, v: Matrix) {
        self.value.set(Some(v))
    }
}

impl Op for Placeholder {
    fn eval(&self, _inputs: Vec<Matrix>) -> Result<Vec<Matrix>> {
        unsafe { Ok(vec![(*self.value.as_ptr()).as_ref().unwrap().clone()]) }
    }
}

pub struct Const {
    value: Matrix,
}

impl Const {
    pub fn build(pb: &::tfpb::node_def::NodeDef) -> Result<Const> {
        let tensor = pb.get_attr().get("value").unwrap().get_tensor();
        Ok(Const { value: Matrix::from_pb(&tensor)? })
    }
}

impl Op for Const {
    fn eval(&self, _inputs: Vec<Matrix>) -> Result<Vec<Matrix>> {
        Ok(vec![self.value.clone()])
    }
}