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Add COUP* financial functions #76

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Add COUP* financial functions #76

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13 changes: 13 additions & 0 deletions base/src/expressions/parser/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -787,6 +787,19 @@ impl<'a> Parser<'a> {
args,
};
}
let trimmed_name = name.trim_start_matches("_xlfn.");
let fallback_kind = match trimmed_name.to_ascii_uppercase().as_str() {
"COUPDAYBS" => Some(Function::Coupdaybs),
"COUPDAYS" => Some(Function::Coupdays),
"COUPDAYSNC" => Some(Function::Coupdaysnc),
"COUPNCD" => Some(Function::Coupncd),
"COUPNUM" => Some(Function::Coupnum),
"COUPPCD" => Some(Function::Couppcd),
_ => None,
};
if let Some(kind) = fallback_kind {
return Node::FunctionKind { kind, args };
}
return Node::InvalidFunctionKind { name, args };
}
let context = &self.context;
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12 changes: 12 additions & 0 deletions base/src/expressions/parser/static_analysis.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1007,6 +1007,12 @@ fn get_function_args_signature(kind: &Function, arg_count: usize) -> Vec<Signatu
Function::Skew => vec![Signature::Vector; arg_count],
Function::SkewP => vec![Signature::Vector; arg_count],
Function::Small => vec![Signature::Vector, Signature::Scalar],
Function::Coupdaybs => args_signature_scalars(arg_count, 3, 1),
Function::Coupdays => args_signature_scalars(arg_count, 3, 1),
Function::Coupdaysnc => args_signature_scalars(arg_count, 3, 1),
Function::Coupncd => args_signature_scalars(arg_count, 3, 1),
Function::Coupnum => args_signature_scalars(arg_count, 3, 1),
Function::Couppcd => args_signature_scalars(arg_count, 3, 1),
}
}

Expand Down Expand Up @@ -1358,5 +1364,11 @@ fn static_analysis_on_function(kind: &Function, args: &[Node]) -> StaticResult {
Function::Skew => StaticResult::Scalar,
Function::SkewP => StaticResult::Scalar,
Function::Small => StaticResult::Scalar,
Function::Coupdaybs => StaticResult::Scalar,
Function::Coupdays => StaticResult::Scalar,
Function::Coupdaysnc => StaticResult::Scalar,
Function::Coupncd => StaticResult::Scalar,
Function::Coupnum => StaticResult::Scalar,
Function::Couppcd => StaticResult::Scalar,
}
}
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