Package com.io7m.cedarbridge.schema.ast

Class CBASTMutableUserData

java.lang.Object

com.io7m.cedarbridge.schema.ast.CBASTMutableUserData

public final class CBASTMutableUserData
extends Object

Mutable user data associated with AST elements. This structure is effectively a type-indexed heterogeneous map.

Constructor Summary

Constructors

Constructor	Description
CBASTMutableUserData()	Construct an empty metadata map.

Method Summary

Modifier and Type	Method	Description
<T> T	get(Class<T> clazz)	Get data from the map with the given type.
<T> void	put(Class<T> clazz, T item)	Put a value into the user data, replacing any existing data of the same type.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

CBASTMutableUserData

public CBASTMutableUserData()

Construct an empty metadata map.

Method Details

put

public <T> void put(Class<T> clazz,
 T item)

Put a value into the user data, replacing any existing data of the same type.

Type Parameters:

T - The precise type of data

Parameters:

clazz - The user data type

item - The data

get

public <T> T get(Class<T> clazz)
          throws IllegalArgumentException

Get data from the map with the given type.

Type Parameters:

T - The precise type of data

Parameters:

clazz - The user data type

Returns:

The data, if any

Throws:

IllegalArgumentException - If no data exists with the given type