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Add FixedRulePayload::inputs_count() #39

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merged 1 commit into from
Feb 2, 2023
Merged

Add FixedRulePayload::inputs_count() #39

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3 changes: 3 additions & 0 deletions cozo-core/src/data/program.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -302,6 +302,9 @@ impl MagicFixedRuleApply {
);
Ok(rel)
}
pub(crate) fn relations_count(&self) -> usize {
self.rule_args.len()
}
pub(crate) fn relation(&self, idx: usize) -> Result<&MagicFixedRuleRuleArg> {
#[derive(Error, Diagnostic, Debug)]
#[error("Cannot find a required positional argument at index {idx} for '{rule_name}'")]
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4 changes: 4 additions & 0 deletions cozo-core/src/fixed_rule/mod.rs
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Expand Up @@ -329,6 +329,10 @@ impl<'a, 'b> FixedRuleInputRelation<'a, 'b> {
}

impl<'a, 'b> FixedRulePayload<'a, 'b> {
/// Get the total number of input relations.
pub fn inputs_count(&self) -> usize {
self.manifest.relations_count()
}
/// Get the input relation at `idx`.
pub fn get_input(&self, idx: usize) -> Result<FixedRuleInputRelation<'a, 'b>> {
let arg_manifest = self.manifest.relation(idx)?;
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