1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136

use super::{
    sink_names_input, source_names_output, BinBuildEnvironment,
    BinDescription, Calculator, FetchItem, GetCalibration, Item,
    Iteration, Result, Scope, SinkBin, SinkNames, SourceBin, SourceId,
    SourceNames, SourceSinkBinDescription, WriteDotSimple, SINK_INPUT,
    SOURCE_OUTPUT,
};
use crate::error;
use indexmap::IndexSet;

static BIN_TYPE: &'static str = "sinus";

pub struct Bin {
    scope: Scope,
    source_input: Box<FetchItem>,
    result_output: Item,
}

impl SinkBin for Bin {}

impl SourceBin for Bin {
    fn get_source_data(&self, source: &SourceId) -> Result<Item> {
        if source.id == SOURCE_OUTPUT {
            Ok(self.result_output.clone())
        } else {
            error::MissingSourceName {
                scope: self.scope.clone(),
                name: source.id.to_string(),
                bin_type: BIN_TYPE.to_string(),
            }
            .fail()
        }
    }
}

impl Calculator for Bin {
    fn calculate(&mut self, _iteration: &Iteration) -> Result<()> {
        let input = self.source_input.fetch_item(&self.scope)?;
        use decorum::Real;

        self.result_output = match input.to_float() {
            Ok(value) => Item::from(value.sin()),
            Err(_) => Item::Nothing,
        };
        Ok(())
    }
}

#[derive(Clone, Debug, Serialize, Deserialize)]
pub struct Description;

impl BinDescription for Description {
    type Bin = Bin;

    fn check_validity(
        &self,
        _scope: &Scope,
        _get_calibration: &mut GetCalibration,
    ) -> Result<()> {
        Ok(())
    }

    fn bin_type(&self) -> &'static str {
        BIN_TYPE
    }
}

impl SinkNames for Description {
    fn sink_names(&self) -> IndexSet<String> {
        sink_names_input()
    }
}

impl SourceNames for Description {
    fn source_names(&self) -> Result<IndexSet<String>> {
        Ok(source_names_output())
    }
}

impl SourceSinkBinDescription for Description {
    fn build_bin(
        &self,
        scope: &Scope,
        env: &mut BinBuildEnvironment,
    ) -> Result<Self::Bin> {
        Ok(Bin {
            scope: scope.clone(),
            source_input: env.resolve(SINK_INPUT)?,
            result_output: Item::Nothing,
        })
    }
}

impl WriteDotSimple for Description {}

#[cfg(test)]
mod tests {
    use super::Description;
    use crate::bins::{directsource, verificationsink};
    use crate::Item as I;
    use crate::{run_bin, Result};
    use indexmap::indexset;

    #[test]
    fn simulate() -> Result<()> {
        use crate::Item::*;

        let pi = std::f64::consts::PI;
        let input = directsource::Description {
            columns: indexset!["input".to_string()],
            rows: vec![
                vec![Nothing],
                vec![I::from(0f64)],
                vec![I::from(pi * 2f64)],
                vec![I::from(pi)],
                vec![I::from(pi * 0.5f64)],
                vec![I::from(pi * 1.5f64)],
            ]
            .into(),
        };
        let verification = verificationsink::Description {
            columns: indexset!["output".to_string()],
            expected: vec![
                vec![Nothing],
                vec![I::from(0f64)],
                vec![I::from(0f64)],
                vec![I::from(0f64)],
                vec![I::from(1f64)],
                vec![I::from(-1f64)],
            ]
            .into(),
        };

        run_bin(&input, &Description {}, &verification)
    }
}