SignatureWriter

java.lang.Object
- org.objectweb.asm.signature.SignatureVisitor
- - org.objectweb.asm.signature.SignatureWriter

```
public class SignatureWriter
extends SignatureVisitor
```
A SignatureVisitor that generates signature literals, as defined in the Java Virtual Machine Specification (JVMS).

See Also:

JVMS 4.7.9.1

Field Summary

Fields
Modifier and Type	Field and Description
`private int`	`argumentStack` The stack used to keep track of class types that have arguments.
`private boolean`	`hasFormals` Whether the visited signature contains formal type parameters.
`private boolean`	`hasParameters` Whether the visited signature contains method parameter types.
`private java.lang.StringBuilder`	`stringBuilder` The builder used to construct the visited signature.

Fields inherited from class org.objectweb.asm.signature.SignatureVisitor
api, EXTENDS, INSTANCEOF, SUPER

Constructor Summary

Constructors
Constructor and Description

SignatureWriter()
Constructs a new SignatureWriter.

Constructors
Constructor and Description
`SignatureWriter()` Constructs a new `SignatureWriter`.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`private void`	`endArguments()` Ends the type arguments of a class or inner class type.
`private void`	`endFormals()` Ends the formal type parameters section of the signature.
`java.lang.String`	`toString()` Returns the signature that was built by this signature writer.
`SignatureVisitor`	`visitArrayType()` Visits a signature corresponding to an array type.
`void`	`visitBaseType(char descriptor)` Visits a signature corresponding to a primitive type.
`SignatureVisitor`	`visitClassBound()` Visits the class bound of the last visited formal type parameter.
`void`	`visitClassType(java.lang.String name)` Starts the visit of a signature corresponding to a class or interface type.
`void`	`visitEnd()` Ends the visit of a signature corresponding to a class or interface type.
`SignatureVisitor`	`visitExceptionType()` Visits the type of a method exception.
`void`	`visitFormalTypeParameter(java.lang.String name)` Visits a formal type parameter.
`void`	`visitInnerClassType(java.lang.String name)` Visits an inner class.
`SignatureVisitor`	`visitInterface()` Visits the type of an interface implemented by the class.
`SignatureVisitor`	`visitInterfaceBound()` Visits an interface bound of the last visited formal type parameter.
`SignatureVisitor`	`visitParameterType()` Visits the type of a method parameter.
`SignatureVisitor`	`visitReturnType()` Visits the return type of the method.
`SignatureVisitor`	`visitSuperclass()` Visits the type of the super class.
`void`	`visitTypeArgument()` Visits an unbounded type argument of the last visited class or inner class type.
`SignatureVisitor`	`visitTypeArgument(char wildcard)` Visits a type argument of the last visited class or inner class type.
`void`	`visitTypeVariable(java.lang.String name)` Visits a signature corresponding to a type variable.

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

- Field Detail
  - stringBuilder
```
private final java.lang.StringBuilder stringBuilder
```
    The builder used to construct the visited signature.
  - hasFormals
```
private boolean hasFormals
```
    Whether the visited signature contains formal type parameters.
  - hasParameters
```
private boolean hasParameters
```
    Whether the visited signature contains method parameter types.
  - argumentStack
```
private int argumentStack
```
    The stack used to keep track of class types that have arguments. Each element of this stack is a boolean encoded in one bit. The top of the stack is the least significant bit. Pushing false = *2, pushing true = *2+1, popping = /2.
    Class type arguments must be surrounded with '<' and '>' and, because
    1. class types can be nested (because type arguments can themselves be class types),
    2. SignatureWriter always returns 'this' in each visit* method (to avoid allocating new SignatureWriter instances),
    we need a stack to properly balance these 'parentheses'. A new element is pushed on this stack for each new visited type, and popped when the visit of this type ends (either is visitEnd, or because visitInnerClassType is called).
- Constructor Detail
  - SignatureWriter
```
public SignatureWriter()
```
    Constructs a new SignatureWriter.
- Method Detail
  - visitFormalTypeParameter
```
public void visitFormalTypeParameter(java.lang.String name)
```
    Description copied from class: SignatureVisitor
    
    Visits a formal type parameter.
    
    Overrides:
    
    visitFormalTypeParameter in class SignatureVisitor
    
    Parameters:
    
    name - the name of the formal parameter.
  - visitClassBound
```
public SignatureVisitor visitClassBound()
```
    Description copied from class: SignatureVisitor
    
    Visits the class bound of the last visited formal type parameter.
    
    Overrides:
    
    visitClassBound in class SignatureVisitor
    
    Returns:
    
    a non null visitor to visit the signature of the class bound.
  - visitInterfaceBound
```
public SignatureVisitor visitInterfaceBound()
```
    Description copied from class: SignatureVisitor
    
    Visits an interface bound of the last visited formal type parameter.
    
    Overrides:
    
    visitInterfaceBound in class SignatureVisitor
    
    Returns:
    
    a non null visitor to visit the signature of the interface bound.
  - visitSuperclass
```
public SignatureVisitor visitSuperclass()
```
    Description copied from class: SignatureVisitor
    
    Visits the type of the super class.
    
    Overrides:
    
    visitSuperclass in class SignatureVisitor
    
    Returns:
    
    a non null visitor to visit the signature of the super class type.
  - visitInterface
```
public SignatureVisitor visitInterface()
```
    Description copied from class: SignatureVisitor
    
    Visits the type of an interface implemented by the class.
    
    Overrides:
    
    visitInterface in class SignatureVisitor
    
    Returns:
    
    a non null visitor to visit the signature of the interface type.
  - visitParameterType
```
public SignatureVisitor visitParameterType()
```
    Description copied from class: SignatureVisitor
    
    Visits the type of a method parameter.
    
    Overrides:
    
    visitParameterType in class SignatureVisitor
    
    Returns:
    
    a non null visitor to visit the signature of the parameter type.
  - visitReturnType
```
public SignatureVisitor visitReturnType()
```
    Description copied from class: SignatureVisitor
    
    Visits the return type of the method.
    
    Overrides:
    
    visitReturnType in class SignatureVisitor
    
    Returns:
    
    a non null visitor to visit the signature of the return type.
  - visitExceptionType
```
public SignatureVisitor visitExceptionType()
```
    Description copied from class: SignatureVisitor
    
    Visits the type of a method exception.
    
    Overrides:
    
    visitExceptionType in class SignatureVisitor
    
    Returns:
    
    a non null visitor to visit the signature of the exception type.
  - visitBaseType
```
public void visitBaseType(char descriptor)
```
    Description copied from class: SignatureVisitor
    
    Visits a signature corresponding to a primitive type.
    
    Overrides:
    
    visitBaseType in class SignatureVisitor
    
    Parameters:
    
    descriptor - the descriptor of the primitive type, or 'V' for void .
  - visitTypeVariable
```
public void visitTypeVariable(java.lang.String name)
```
    Description copied from class: SignatureVisitor
    
    Visits a signature corresponding to a type variable.
    
    Overrides:
    
    visitTypeVariable in class SignatureVisitor
    
    Parameters:
    
    name - the name of the type variable.
  - visitArrayType
```
public SignatureVisitor visitArrayType()
```
    Description copied from class: SignatureVisitor
    
    Visits a signature corresponding to an array type.
    
    Overrides:
    
    visitArrayType in class SignatureVisitor
    
    Returns:
    
    a non null visitor to visit the signature of the array element type.
  - visitClassType
```
public void visitClassType(java.lang.String name)
```
    Description copied from class: SignatureVisitor
    
    Starts the visit of a signature corresponding to a class or interface type.
    
    Overrides:
    
    visitClassType in class SignatureVisitor
    
    Parameters:
    
    name - the internal name of the class or interface.
  - visitInnerClassType
```
public void visitInnerClassType(java.lang.String name)
```
    Description copied from class: SignatureVisitor
    
    Visits an inner class.
    
    Overrides:
    
    visitInnerClassType in class SignatureVisitor
    
    Parameters:
    
    name - the local name of the inner class in its enclosing class.
  - visitTypeArgument
```
public void visitTypeArgument()
```
    Description copied from class: SignatureVisitor
    
    Visits an unbounded type argument of the last visited class or inner class type.
    
    Overrides:
    
    visitTypeArgument in class SignatureVisitor
  - visitTypeArgument
```
public SignatureVisitor visitTypeArgument(char wildcard)
```
    Description copied from class: SignatureVisitor
    
    Visits a type argument of the last visited class or inner class type.
    
    Overrides:
    
    visitTypeArgument in class SignatureVisitor
    
    Parameters:
    
    wildcard - '+', '-' or '='.
    
    Returns:
    
    a non null visitor to visit the signature of the type argument.
  - visitEnd
```
public void visitEnd()
```
    Description copied from class: SignatureVisitor
    
    Ends the visit of a signature corresponding to a class or interface type.
    
    Overrides:
    
    visitEnd in class SignatureVisitor
  - toString
```
public java.lang.String toString()
```
    Returns the signature that was built by this signature writer.
    
    Overrides:
    
    toString in class java.lang.Object
    
    Returns:
    
    the signature that was built by this signature writer.
  - endFormals
```
private void endFormals()
```
    Ends the formal type parameters section of the signature.
  - endArguments
```
private void endArguments()
```
    Ends the type arguments of a class or inner class type.

Class SignatureWriter

Field Summary

Fields inherited from class org.objectweb.asm.signature.SignatureVisitor

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

stringBuilder

hasFormals

hasParameters

argumentStack

Constructor Detail

SignatureWriter

Method Detail

visitFormalTypeParameter

visitClassBound

visitInterfaceBound

visitSuperclass

visitInterface

visitParameterType

visitReturnType

visitExceptionType

visitBaseType

visitTypeVariable

visitArrayType

visitClassType

visitInnerClassType

visitTypeArgument

visitTypeArgument

visitEnd

toString

endFormals

endArguments