jsonschema-rs/jsonschema/src/keywords/enum_.rs

79 lines
2.2 KiB
Rust

use crate::{
compilation::{context::CompilationContext, JSONSchema},
error::{error, no_error, CompilationError, ErrorIterator, ValidationError},
keywords::{helpers, CompilationResult},
primitive_type::{PrimitiveType, PrimitiveTypesBitMap},
validator::Validate,
};
use serde_json::{Map, Value};
#[derive(Debug)]
pub(crate) struct EnumValidator {
options: Value,
// Types that occur in items
types: PrimitiveTypesBitMap,
items: Vec<Value>,
}
impl EnumValidator {
#[inline]
pub(crate) fn compile(schema: &Value) -> CompilationResult {
if let Value::Array(items) = schema {
let mut types = PrimitiveTypesBitMap::new();
for item in items.iter() {
types |= PrimitiveType::from(item);
}
Ok(Box::new(EnumValidator {
options: schema.clone(),
items: items.clone(),
types,
}))
} else {
Err(CompilationError::SchemaError)
}
}
}
impl Validate for EnumValidator {
fn validate<'a>(&self, schema: &'a JSONSchema, instance: &'a Value) -> ErrorIterator<'a> {
if !self.is_valid(schema, instance) {
error(ValidationError::enumeration(instance, &self.options))
} else {
no_error()
}
}
fn is_valid(&self, _: &JSONSchema, instance: &Value) -> bool {
// If the input value type is not in the types present among the enum options, then there
// is no reason to compare it against all items - we know that
// there are no items with such type at all
if self.types.contains_type(PrimitiveType::from(instance)) {
self.items.iter().any(|item| helpers::equal(instance, item))
} else {
false
}
}
}
impl ToString for EnumValidator {
fn to_string(&self) -> String {
format!(
"enum: [{}]",
self.items
.iter()
.map(Value::to_string)
.collect::<Vec<String>>()
.join(", ")
)
}
}
#[inline]
pub(crate) fn compile(
_: &Map<String, Value>,
schema: &Value,
_: &CompilationContext,
) -> Option<CompilationResult> {
Some(EnumValidator::compile(schema))
}