CelMutableAst

java.lang.Object
- dev.cel.common.CelMutableAst

```
public final class CelMutableAst
extends java.lang.Object
```
An abstract representation of CEL Abstract Syntax tree that allows mutation in any of its properties. This class is semantically the same as that of the immutable CelAbstractSyntaxTree.
This should only be used within optimizers to augment an AST.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`CelMutableExpr`	`expr()`	Returns the underlying `CelMutableExpr` representation of the abstract syntax tree.
`static CelMutableAst`	`fromCelAst(CelAbstractSyntaxTree ast)`	Constructs an instance of `CelMutableAst` with the incoming `CelAbstractSyntaxTree`.
`java.util.Optional<CelReference>`	`getReference(long exprId)`	Returns the resolved reference to a declaration at expression ID for a type-checked AST.
`java.util.Optional<CelType>`	`getType(long exprId)`	Returns the type of the expression node for a type-checked AST.
`static CelMutableAst`	`of(CelMutableExpr mutableExpr, CelMutableSource mutableSource)`	Constructs an instance of `CelMutableAst` with the mutable expression and its source builder.
`CelMutableSource`	`source()`	Returns the `CelMutableSource` that was used during construction of the abstract syntax tree.
`CelAbstractSyntaxTree`	`toParsedAst()`	Converts this mutable AST into a parsed `CelAbstractSyntaxTree`.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - expr
```
public CelMutableExpr expr()
```
    Returns the underlying CelMutableExpr representation of the abstract syntax tree.
  - source
```
public CelMutableSource source()
```
    Returns the CelMutableSource that was used during construction of the abstract syntax tree.
  - getReference
```
public java.util.Optional<CelReference> getReference(long exprId)
```
    Returns the resolved reference to a declaration at expression ID for a type-checked AST.
    
    Returns:
    
    Optional of CelReference or Optional.empty() if the reference does not exist at the ID.
  - getType
```
public java.util.Optional<CelType> getType(long exprId)
```
    Returns the type of the expression node for a type-checked AST.
    
    Returns:
    
    Optional of CelType or Optional.empty() if the type does not exist at the ID.
  - toParsedAst
```
public CelAbstractSyntaxTree toParsedAst()
```
    Converts this mutable AST into a parsed CelAbstractSyntaxTree.
  - fromCelAst
```
public static CelMutableAst fromCelAst(CelAbstractSyntaxTree ast)
```
    Constructs an instance of CelMutableAst with the incoming CelAbstractSyntaxTree.
  - of
```
public static CelMutableAst of(CelMutableExpr mutableExpr,
                               CelMutableSource mutableSource)
```
    Constructs an instance of CelMutableAst with the mutable expression and its source builder.