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use crate::make_schema::MakeSchema;
use crate::schema::*;
use crate::{MakeSchemaError, Map, Result};
#[derive(Debug, PartialEq, Clone)]
pub struct SchemaSettings {
pub option_nullable: bool,
pub option_add_null_type: bool,
pub bool_schemas: BoolSchemas,
pub definitions_path: String,
}
#[derive(Debug, PartialEq, Copy, Clone)]
pub enum BoolSchemas {
Enable,
AdditionalPropertiesOnly,
Disable,
}
impl Default for SchemaSettings {
fn default() -> SchemaSettings {
SchemaSettings {
option_nullable: false,
option_add_null_type: true,
bool_schemas: BoolSchemas::Enable,
definitions_path: "#/definitions/".to_owned(),
}
}
}
impl SchemaSettings {
pub fn new() -> SchemaSettings {
SchemaSettings {
..Default::default()
}
}
pub fn openapi3() -> SchemaSettings {
SchemaSettings {
option_nullable: true,
option_add_null_type: false,
bool_schemas: BoolSchemas::AdditionalPropertiesOnly,
definitions_path: "#/components/schemas/".to_owned(),
}
}
pub fn into_generator(self) -> SchemaGenerator {
SchemaGenerator::new(self)
}
}
#[derive(Debug, Default, Clone)]
pub struct SchemaGenerator {
settings: SchemaSettings,
definitions: Map<String, Schema>,
}
impl SchemaGenerator {
pub fn new(settings: SchemaSettings) -> SchemaGenerator {
SchemaGenerator {
settings,
..Default::default()
}
}
pub fn settings(&self) -> &SchemaSettings {
&self.settings
}
pub fn schema_for_any(&self) -> Schema {
if self.settings().bool_schemas == BoolSchemas::Enable {
true.into()
} else {
Schema::Object(Default::default())
}
}
pub fn schema_for_none(&self) -> Schema {
if self.settings().bool_schemas == BoolSchemas::Enable {
false.into()
} else {
Schema::Object(SchemaObject {
not: Some(Schema::Object(Default::default()).into()),
..Default::default()
})
}
}
pub fn subschema_for<T: ?Sized + MakeSchema>(&mut self) -> Result {
if !T::is_referenceable() {
return T::make_schema(self);
}
let name = T::schema_name();
if !self.definitions.contains_key(&name) {
self.insert_new_subschema_for::<T>(name.clone())?;
}
let reference = format!("{}{}", self.settings().definitions_path, name);
Ok(Ref { reference }.into())
}
fn insert_new_subschema_for<T: ?Sized + MakeSchema>(&mut self, name: String) -> Result<()> {
let dummy = Schema::Bool(false);
self.definitions.insert(name.clone(), dummy);
match T::make_schema(self) {
Ok(schema) => {
self.definitions.insert(name.clone(), schema);
Ok(())
}
Err(e) => {
self.definitions.remove(&name);
Err(e)
}
}
}
pub fn definitions(&self) -> &Map<String, Schema> {
&self.definitions
}
pub fn into_definitions(self) -> Map<String, Schema> {
self.definitions
}
pub fn root_schema_for<T: ?Sized + MakeSchema>(&mut self) -> Result {
let schema = T::make_schema(self)?;
Ok(match schema {
Schema::Object(mut o) => {
o.schema = Some("http://json-schema.org/draft-07/schema#".to_owned());
o.title = Some(T::schema_name());
o.definitions.extend(self.definitions().clone());
Schema::Object(o)
}
schema => schema,
})
}
pub fn into_root_schema_for<T: ?Sized + MakeSchema>(mut self) -> Result {
let schema = T::make_schema(&mut self)?;
Ok(match schema {
Schema::Object(mut o) => {
o.schema = Some("http://json-schema.org/draft-07/schema#".to_owned());
o.title = Some(T::schema_name());
o.definitions.extend(self.into_definitions());
Schema::Object(o)
}
schema => schema,
})
}
pub(crate) fn get_schema_object<'a>(&'a self, mut schema: &'a Schema) -> Result<SchemaObject> {
loop {
match schema {
Schema::Object(o) => return Ok(o.clone()),
Schema::Bool(true) => return Ok(Default::default()),
Schema::Bool(false) => {
return Ok(SchemaObject {
not: Some(Schema::Bool(true).into()),
..Default::default()
})
}
Schema::Ref(r) => {
let definitions_path_len = self.settings().definitions_path.len();
let name = r.reference.get(definitions_path_len..).ok_or_else(|| {
MakeSchemaError::new(
"Could not extract referenced schema name.",
Schema::Ref(r.clone()),
)
})?;
schema = self.definitions.get(name).ok_or_else(|| {
MakeSchemaError::new(
"Could not find referenced schema.",
Schema::Ref(r.clone()),
)
})?;
match schema {
Schema::Ref(r2) if r2 == r => {
return Err(MakeSchemaError::new(
"Schema is referencing itself.",
schema.clone(),
));
}
_ => {}
}
}
}
}
}
}