30 lines
686 B
Rust
30 lines
686 B
Rust
use error::{self, Error};
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use value::Value;
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pub mod builtin;
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pub struct Function {
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argument_amount: Option<usize>,
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function: Box<Fn(&[Value]) -> Result<Value, Error>>,
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}
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impl Function {
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pub fn new(
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argument_amount: Option<usize>,
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function: Box<Fn(&[Value]) -> Result<Value, Error>>,
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) -> Self {
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Self {
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argument_amount,
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function,
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}
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}
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pub fn call(&self, arguments: &[Value]) -> Result<Value, Error> {
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if let Some(argument_amount) = self.argument_amount {
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error::expect_function_argument_amount(arguments.len(), argument_amount)?;
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}
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(self.function)(arguments)
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}
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}
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