Operator (LBJava 1.2.22 API)

java.lang.Object
- edu.illinois.cs.cogcomp.lbjava.IR.ASTNode
- - edu.illinois.cs.cogcomp.lbjava.IR.Operator

```
public class Operator
extends ASTNode
```
LBJava supports every Java operator. This class stores information about those operators, such as their symbols and precedences, as well as information about LBJava's new operators. The static constant fields defined in this class serve as indeces into its static array fields.
The precedence values for Java operators were taken from Java-FAQ.com.

Author:

Nick Rizzolo

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`AND` Value of the `operation` variable.
`static int`	`AND_ASSIGN` Value of the `operation` variable.
`static int`	`ARROW` Value of the `operation` variable.
`static int`	`ASSIGN` Value of the `operation` variable.
`static int`	`BITWISE_AND` Value of the `operation` variable.
`static int`	`BITWISE_NOT` Value of the `operation` variable.
`static int`	`BITWISE_OR` Value of the `operation` variable.
`static int`	`CONDITIONAL` Value of the `operation` variable.
`static int`	`CONJUNCTION` Value of the `operation` variable.
`static int`	`CONSTRAINT_EQUAL` Value of the `operation` variable.
`static int`	`CONSTRAINT_NOT_EQUAL` Value of the `operation` variable.
`static int`	`DIVIDE` Value of the `operation` variable.
`static int`	`DIVIDE_ASSIGN` Value of the `operation` variable.
`static int`	`DOT` Value of the `operation` variable.
`static int`	`DOUBLE_IMPLICATION` Value of the `operation` variable.
`static int`	`EQUAL` Value of the `operation` variable.
`static int`	`GREATER_THAN` Value of the `operation` variable.
`static int`	`GREATER_THAN_OR_EQUAL` Value of the `operation` variable.
`static int`	`IMPLICATION` Value of the `operation` variable.
`static int`	`INSTANCEOF` Value of the `operation` variable.
`static int`	`LEFT_SHIFT` Value of the `operation` variable.
`static int`	`LEFT_SHIFT_ASSIGN` Value of the `operation` variable.
`static int`	`LESS_THAN` Value of the `operation` variable.
`static int`	`LESS_THAN_OR_EQUAL` Value of the `operation` variable.
`static int`	`LOGICAL_CONJUNCTION` Value of the `operation` variable.
`static int`	`LOGICAL_DISJUNCTION` Value of the `operation` variable.
`static int`	`MINUS` Value of the `operation` variable.
`static int`	`MINUS_ASSIGN` Value of the `operation` variable.
`static int`	`MOD` Value of the `operation` variable.
`static int`	`MOD_ASSIGN` Value of the `operation` variable.
`static int`	`MULTIPLY_ASSIGN` Value of the `operation` variable.
`static int`	`NEW` Value of the `operation` variable.
`static int`	`NOT` Value of the `operation` variable.
`static int`	`NOT_EQUAL` Value of the `operation` variable.
`int`	`operation` The index of the operation represented by this `Operator`.
`static int`	`OR` Value of the `operation` variable.
`static int`	`OR_ASSIGN` Value of the `operation` variable.
`static int`	`PLUS` Value of the `operation` variable.
`static int`	`PLUS_ASSIGN` Value of the `operation` variable.
`static int`	`POST_DECREMENT` Value of the `operation` variable.
`static int`	`POST_INCREMENT` Value of the `operation` variable.
`static int`	`PRE_DECREMENT` Value of the `operation` variable.
`static int`	`PRE_INCREMENT` Value of the `operation` variable.
`static int`	`SIGNED_RIGHT_SHIFT` Value of the `operation` variable.
`static int`	`SIGNED_RIGHT_SHIFT_ASSIGN` Value of the `operation` variable.
`static int`	`TIMES` Value of the `operation` variable.
`static int`	`UNSIGNED_RIGHT_SHIFT` Value of the `operation` variable.
`static int`	`UNSIGNED_RIGHT_SHIFT_ASSIGN` Value of the `operation` variable.
`static int`	`XOR` Value of the `operation` variable.
`static int`	`XOR_ASSIGN` Value of the `operation` variable.

Fields inherited from class edu.illinois.cs.cogcomp.lbjava.IR.ASTNode
byteOffset, line, nodeID, symbolTable

Constructor Summary

Constructors
Constructor and Description

Operator(int operation)
Default constructor.

Operator(int operation, int line, int byteOffset)
Full constructor.

Constructors
Constructor and Description
`Operator(int operation)` Default constructor.
`Operator(int operation, int line, int byteOffset)` Full constructor.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`Object`	`clone()` Creates a new object with the same primitive data, and recursively creates new member data objects as well.
`boolean`	`equals(Object o)` Indicates whether some other object is "equal to" this one.
`int`	`getPrecedence()` Produces the precedence of this operator.
`int`	`hashCode()` Returns a hash code value for java hash structures.
`ASTNodeIterator`	`iterator()` Returns an iterator used to successively access the children of this node.
`static int`	`operatorPrecedence(int operation)` Produces the precedence of an operator given its index.
`static String`	`operatorSymbol(int operation)` Produces the name of an operator given its index.
`void`	`runPass(Pass pass)` Ensures that the correct `run()` method is called for this type of node.
`void`	`write(StringBuffer buffer)` Writes a string representation of this `ASTNode` to the specified buffer.

Methods inherited from class edu.illinois.cs.cogcomp.lbjava.IR.ASTNode
toString

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

- Field Detail
  - DOT
```
public static final int DOT
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - PRE_INCREMENT
```
public static final int PRE_INCREMENT
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - POST_INCREMENT
```
public static final int POST_INCREMENT
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - PRE_DECREMENT
```
public static final int PRE_DECREMENT
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - POST_DECREMENT
```
public static final int POST_DECREMENT
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - BITWISE_NOT
```
public static final int BITWISE_NOT
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - NOT
```
public static final int NOT
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - NEW
```
public static final int NEW
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - TIMES
```
public static final int TIMES
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - DIVIDE
```
public static final int DIVIDE
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - MOD
```
public static final int MOD
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - PLUS
```
public static final int PLUS
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - MINUS
```
public static final int MINUS
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - LEFT_SHIFT
```
public static final int LEFT_SHIFT
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - SIGNED_RIGHT_SHIFT
```
public static final int SIGNED_RIGHT_SHIFT
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - UNSIGNED_RIGHT_SHIFT
```
public static final int UNSIGNED_RIGHT_SHIFT
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - LESS_THAN
```
public static final int LESS_THAN
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - LESS_THAN_OR_EQUAL
```
public static final int LESS_THAN_OR_EQUAL
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - GREATER_THAN
```
public static final int GREATER_THAN
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - GREATER_THAN_OR_EQUAL
```
public static final int GREATER_THAN_OR_EQUAL
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - INSTANCEOF
```
public static final int INSTANCEOF
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - EQUAL
```
public static final int EQUAL
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - NOT_EQUAL
```
public static final int NOT_EQUAL
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - BITWISE_AND
```
public static final int BITWISE_AND
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - XOR
```
public static final int XOR
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - BITWISE_OR
```
public static final int BITWISE_OR
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - AND
```
public static final int AND
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - OR
```
public static final int OR
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - CONDITIONAL
```
public static final int CONDITIONAL
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - ASSIGN
```
public static final int ASSIGN
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - MULTIPLY_ASSIGN
```
public static final int MULTIPLY_ASSIGN
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - DIVIDE_ASSIGN
```
public static final int DIVIDE_ASSIGN
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - MOD_ASSIGN
```
public static final int MOD_ASSIGN
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - PLUS_ASSIGN
```
public static final int PLUS_ASSIGN
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - MINUS_ASSIGN
```
public static final int MINUS_ASSIGN
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - LEFT_SHIFT_ASSIGN
```
public static final int LEFT_SHIFT_ASSIGN
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - SIGNED_RIGHT_SHIFT_ASSIGN
```
public static final int SIGNED_RIGHT_SHIFT_ASSIGN
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - UNSIGNED_RIGHT_SHIFT_ASSIGN
```
public static final int UNSIGNED_RIGHT_SHIFT_ASSIGN
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - AND_ASSIGN
```
public static final int AND_ASSIGN
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - OR_ASSIGN
```
public static final int OR_ASSIGN
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - XOR_ASSIGN
```
public static final int XOR_ASSIGN
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - CONJUNCTION
```
public static final int CONJUNCTION
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - ARROW
```
public static final int ARROW
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - CONSTRAINT_EQUAL
```
public static final int CONSTRAINT_EQUAL
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - CONSTRAINT_NOT_EQUAL
```
public static final int CONSTRAINT_NOT_EQUAL
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - LOGICAL_CONJUNCTION
```
public static final int LOGICAL_CONJUNCTION
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - LOGICAL_DISJUNCTION
```
public static final int LOGICAL_DISJUNCTION
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - IMPLICATION
```
public static final int IMPLICATION
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - DOUBLE_IMPLICATION
```
public static final int DOUBLE_IMPLICATION
```
    Value of the operation variable.
    
    See Also:
    
    Constant Field Values
  - operation
```
public int operation
```
    The index of the operation represented by this Operator.
- Constructor Detail
  - Operator
```
public Operator(int operation)
```
    Default constructor. Line and byte offset information, having not been specified, is set to -1.
    
    Parameters:
    
    operation - The index of the operation.
  - Operator
```
public Operator(int operation,
                int line,
                int byteOffset)
```
    Full constructor.
    
    Parameters:
    
    operation - The index of the operation.
    
    line - The line on which the source code represented by this node is found.
    
    byteOffset - The byte offset from the beginning of the source file at which the source code represented by this node is found.
- Method Detail
  - operatorSymbol
```
public static String operatorSymbol(int operation)
```
    Produces the name of an operator given its index.
    
    Parameters:
    
    operation - The index of the operation. (See the static member variables.)
    
    Returns:
    
    A String holding the name of the operator.
  - operatorPrecedence
```
public static int operatorPrecedence(int operation)
```
    Produces the precedence of an operator given its index.
    
    Parameters:
    
    operation - The index of the operation.
    
    Returns:
    
    The precedence of the corresponding operator.
  - getPrecedence
```
public int getPrecedence()
```
    Produces the precedence of this operator.
    
    Returns:
    
    The precedence of this operator.
  - hashCode
```
public int hashCode()
```
    Returns a hash code value for java hash structures.
    
    Overrides:
    
    hashCode in class Object
    
    Returns:
    
    A hash code for this object.
  - equals
```
public boolean equals(Object o)
```
    Indicates whether some other object is "equal to" this one.
    
    Overrides:
    
    equals in class Object
    
    Returns:
    
    true iff this object is the same as the argument.
  - iterator
```
public ASTNodeIterator iterator()
```
    Returns an iterator used to successively access the children of this node.
    
    Specified by:
    
    iterator in class ASTNode
    
    Returns:
    
    An iterator used to successively access the children of this node.
  - clone
```
public Object clone()
```
    Creates a new object with the same primitive data, and recursively creates new member data objects as well.
    
    Overrides:
    
    clone in class ASTNode
    
    Returns:
    
    The clone node.
  - runPass
```
public void runPass(Pass pass)
```
    Ensures that the correct run() method is called for this type of node.
    
    Specified by:
    
    runPass in class ASTNode
    
    Parameters:
    
    pass - The pass whose run() method should be called.
  - write
```
public void write(StringBuffer buffer)
```
    Writes a string representation of this ASTNode to the specified buffer. The representation written is parsable by the LBJava compiler, but not very readable.
    
    Specified by:
    
    write in class ASTNode
    
    Parameters:
    
    buffer - The buffer to write to.

Class Operator

Field Summary

Fields inherited from class edu.illinois.cs.cogcomp.lbjava.IR.ASTNode

Constructor Summary

Method Summary

Methods inherited from class edu.illinois.cs.cogcomp.lbjava.IR.ASTNode

Methods inherited from class java.lang.Object

Field Detail

DOT

PRE_INCREMENT

POST_INCREMENT

PRE_DECREMENT

POST_DECREMENT

BITWISE_NOT

NOT

NEW

TIMES

DIVIDE

MOD

PLUS

MINUS

LEFT_SHIFT

SIGNED_RIGHT_SHIFT

UNSIGNED_RIGHT_SHIFT

LESS_THAN

LESS_THAN_OR_EQUAL

GREATER_THAN

GREATER_THAN_OR_EQUAL

INSTANCEOF

EQUAL

NOT_EQUAL

BITWISE_AND

XOR

BITWISE_OR

AND

OR

CONDITIONAL

ASSIGN

MULTIPLY_ASSIGN

DIVIDE_ASSIGN

MOD_ASSIGN

PLUS_ASSIGN

MINUS_ASSIGN

LEFT_SHIFT_ASSIGN

SIGNED_RIGHT_SHIFT_ASSIGN

UNSIGNED_RIGHT_SHIFT_ASSIGN

AND_ASSIGN

OR_ASSIGN

XOR_ASSIGN

CONJUNCTION

ARROW

CONSTRAINT_EQUAL

CONSTRAINT_NOT_EQUAL

LOGICAL_CONJUNCTION

LOGICAL_DISJUNCTION

IMPLICATION

DOUBLE_IMPLICATION

operation

Constructor Detail

Operator

Operator

Method Detail

operatorSymbol

operatorPrecedence

getPrecedence

hashCode

equals

iterator

clone

runPass

write