jsonschema-rs/jsonschema/src/keywords/max_length.rs

87 lines
2.3 KiB
Rust

use crate::{
compilation::{context::CompilationContext, JSONSchema},
error::{error, no_error, ErrorIterator, ValidationError},
keywords::CompilationResult,
paths::{InstancePath, JSONPointer},
validator::Validate,
};
use serde_json::{Map, Value};
pub(crate) struct MaxLengthValidator {
limit: u64,
schema_path: JSONPointer,
}
impl MaxLengthValidator {
#[inline]
pub(crate) fn compile(schema: &Value, schema_path: JSONPointer) -> CompilationResult {
if let Some(limit) = schema.as_u64() {
Ok(Box::new(MaxLengthValidator { limit, schema_path }))
} else {
Err(ValidationError::format(
JSONPointer::default(),
schema_path,
schema,
"max_length int validation",
))
}
}
}
impl Validate for MaxLengthValidator {
fn is_valid(&self, _: &JSONSchema, instance: &Value) -> bool {
if let Value::String(item) = instance {
if (item.chars().count() as u64) > self.limit {
return false;
}
}
true
}
fn validate<'a, 'b>(
&self,
_schema: &'a JSONSchema,
instance: &'b Value,
instance_path: &InstancePath,
) -> ErrorIterator<'b> {
if let Value::String(item) = instance {
if (item.chars().count() as u64) > self.limit {
return error(ValidationError::max_length(
self.schema_path.clone(),
instance_path.into(),
instance,
self.limit,
));
}
}
no_error()
}
}
impl core::fmt::Display for MaxLengthValidator {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(f, "maxLength: {}", self.limit)
}
}
#[inline]
pub(crate) fn compile<'a>(
_: &'a Map<String, Value>,
schema: &'a Value,
context: &CompilationContext,
) -> Option<CompilationResult<'a>> {
let schema_path = context.as_pointer_with("maxLength");
Some(MaxLengthValidator::compile(schema, schema_path))
}
#[cfg(test)]
mod tests {
use crate::tests_util;
use serde_json::json;
#[test]
fn schema_path() {
tests_util::assert_schema_path(&json!({"maxLength": 1}), &json!("ab"), "/maxLength")
}
}