65 lines
1.7 KiB
Rust
65 lines
1.7 KiB
Rust
use crate::validators::InputValueValidator;
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use crate::Value;
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/// List minimum length validator
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pub struct ListMinLength {
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/// Must be greater than or equal to this value.
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pub length: i32,
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}
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impl InputValueValidator for ListMinLength {
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fn is_valid(&self, value: &Value) -> Result<(), String> {
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if let Value::List(values) = value {
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if values.len() < self.length as usize {
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Err(format!(
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"the value length is {}, must be greater than or equal to {}",
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values.len(),
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self.length
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))
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} else {
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Ok(())
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}
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} else {
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Ok(())
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}
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}
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}
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/// List maximum length validator
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pub struct ListMaxLength {
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/// Must be less than or equal to this value.
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pub length: i32,
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}
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impl InputValueValidator for ListMaxLength {
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fn is_valid(&self, value: &Value) -> Result<(), String> {
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if let Value::List(values) = value {
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if values.len() > self.length as usize {
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Err(format!(
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"the value length is {}, must be less than or equal to {}",
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values.len(),
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self.length
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))
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} else {
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Ok(())
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}
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} else {
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Ok(())
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}
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}
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}
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#[doc(hidden)]
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pub struct List<T>(pub T);
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impl<T: InputValueValidator> InputValueValidator for List<T> {
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fn is_valid(&self, value: &Value) -> Result<(), String> {
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if let Value::List(elems) = value {
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for elem in elems {
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self.0.is_valid(elem)?;
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}
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}
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Ok(())
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}
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}
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