Struct schemars::gen::SchemaGenerator

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pub struct SchemaGenerator { /* private fields */ }

Expand description

The main type used to generate JSON Schemas.

§Example

use schemars::{JsonSchema, SchemaGenerator};

#[derive(JsonSchema)]
struct MyStruct {
    foo: i32,
}

let gen = SchemaGenerator::default();
let schema = gen.into_root_schema_for::<MyStruct>();

Implementations§

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impl SchemaGenerator

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pub fn new(settings: SchemaSettings) -> SchemaGenerator

Creates a new SchemaGenerator using the given settings.

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pub fn settings(&self) -> &SchemaSettings

Borrows the SchemaSettings being used by this SchemaGenerator.

§Example

use schemars::SchemaGenerator;

let gen = SchemaGenerator::default();
let settings = gen.settings();

assert_eq!(settings.option_add_null_type, true);

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pub fn subschema_for<T: ?Sized + JsonSchema>(&mut self) -> Schema

Generates a JSON Schema for the type T, and returns either the schema itself or a $ref schema referencing T’s schema.

If T is not inlined, this will add T’s schema to this generator’s definitions, and return a $ref schema referencing that schema. Otherwise, this method behaves identically to JsonSchema::json_schema.

If T’s schema depends on any non-inlined schemas, then this method will add them to the SchemaGenerator’s schema definitions.

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pub fn definitions(&self) -> &Map<String, Value>

Borrows the collection of all non-inlined schemas that have been generated.

The keys of the returned Map are the schema names, and the values are the schemas themselves.

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pub fn definitions_mut(&mut self) -> &mut Map<String, Value>

Mutably borrows the collection of all non-inlined schemas that have been generated.

The keys of the returned Map are the schema names, and the values are the schemas themselves.

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pub fn take_definitions(&mut self) -> Map<String, Value>

Returns the collection of all non-inlined schemas that have been generated, leaving an empty Map in its place.

The keys of the returned Map are the schema names, and the values are the schemas themselves.

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pub fn visitors_mut(&mut self) -> impl Iterator<Item = &mut dyn GenVisitor>

Returns an iterator over the visitors being used by this SchemaGenerator.

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pub fn root_schema_for<T: ?Sized + JsonSchema>(&mut self) -> Schema

Generates a JSON Schema for the type T.

If T’s schema depends on any non-inlined schemas, then this method will include them in the returned Schema at the definitions path (by default "$defs").

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pub fn into_root_schema_for<T: ?Sized + JsonSchema>(self) -> Schema

Consumes self and generates a JSON Schema for the type T.

If T’s schema depends on any non-inlined schemas, then this method will include them in the returned Schema at the definitions path (by default "$defs").

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pub fn root_schema_for_value<T: ?Sized + Serialize>( &mut self, value: &T, ) -> Result<Schema, Error>

Generates a JSON Schema for the given example value.

If the value implements JsonSchema, then prefer using the root_schema_for() function which will generally produce a more precise schema, particularly when the value contains any enums.

If the Serialize implementation of the value decides to fail, this will return an Err.

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pub fn into_root_schema_for_value<T: ?Sized + Serialize>( self, value: &T, ) -> Result<Schema, Error>

Consumes self and generates a JSON Schema for the given example value.

If the value implements JsonSchema, then prefer using the into_root_schema_for()! function which will generally produce a more precise schema, particularly when the value contains any enums.

If the Serialize implementation of the value decides to fail, this will return an Err.