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Render enums using the datamodel renderer
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Julius de Bruijn
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Oct 19, 2022
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Original file line number | Diff line number | Diff line change |
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use std::fmt; | ||
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use crate::Enum; | ||
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/// The PSL data model declaration. | ||
#[derive(Default, Debug)] | ||
pub struct Datamodel<'a> { | ||
enums: Vec<Enum<'a>>, | ||
} | ||
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impl<'a> Datamodel<'a> { | ||
/// Create a new empty data model. | ||
pub fn new() -> Self { | ||
Self::default() | ||
} | ||
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/// Add an enum block to the data model. | ||
/// | ||
/// ```ignore | ||
/// enum Foo { // < | ||
/// Bar // < this | ||
/// } // < | ||
/// ``` | ||
pub fn push_enum(&mut self, r#enum: Enum<'a>) { | ||
self.enums.push(r#enum); | ||
} | ||
} | ||
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impl<'a> fmt::Display for Datamodel<'a> { | ||
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { | ||
for r#enum in self.enums.iter() { | ||
writeln!(f, "{enum}")?; | ||
} | ||
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Ok(()) | ||
} | ||
} | ||
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#[cfg(test)] | ||
mod tests { | ||
use crate::*; | ||
use expect_test::expect; | ||
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#[test] | ||
fn simple_data_model() { | ||
let mut traffic_light = Enum::new("TrafficLight"); | ||
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traffic_light.push_variant("Red"); | ||
traffic_light.push_variant("Yellow"); | ||
traffic_light.push_variant("Green"); | ||
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let mut cat = Enum::new("Cat"); | ||
cat.push_variant("Asleep"); | ||
cat.push_variant("Hungry"); | ||
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let mut data_model = Datamodel::new(); | ||
data_model.push_enum(traffic_light); | ||
data_model.push_enum(cat); | ||
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let expected = expect![[r#" | ||
enum TrafficLight { | ||
Red | ||
Yellow | ||
Green | ||
} | ||
enum Cat { | ||
Asleep | ||
Hungry | ||
} | ||
"#]]; | ||
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let rendered = psl::reformat(&format!("{data_model}"), 2).unwrap(); | ||
expected.assert_eq(&rendered); | ||
} | ||
} |
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