com.adamcornett.cminus
Class Symbol

java.lang.Object
  com.adamcornett.cminus.Symbol

All Implemented Interfaces:

Comparable<Symbol>

public class Symbol
extends Object
implements Comparable<Symbol>

Author:

Adam Cornett

Field Summary

private int	arraySize If this symbol is an array, this represents how many elements are in the array.
private org.antlr.runtime.Token	ID The Identifier token
private boolean	isArray TRUE if this symbol is an array.
private TokenLocation	loc The location of the symbol definition.
private String	name The name of the token.
private static int	nextStackLocation
private Type	type The type of this symbol
private List<TokenLocation>	uses The locations of the uses of this symbol.
private int	varLocation The location of this variable in the local variable table.

Constructor Summary

Symbol(CMinusParser.type_specifier_return t, org.antlr.runtime.Token token)
The non-array constructor

Symbol(CMinusParser.type_specifier_return t, org.antlr.runtime.Token token, org.antlr.runtime.Token size)
The array constructor

Symbol(Type ty, org.antlr.runtime.Token token)

Method Summary

void	addUse(TokenLocation tl) Add a usage of a symbol
int	compareTo(Symbol o)
boolean	equals(Object obj)
int	getArraySize()
TokenLocation	getLocation() Get the location of the definition of this symbol.
String	getName()
Type	getType()
int	getVarLocation()
boolean	isArray()
static void	resetStackLocation()
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

nextStackLocation

private static int nextStackLocation

arraySize

private int arraySize

If this symbol is an array, this represents how many elements are in the array.

ID

private final org.antlr.runtime.Token ID

The Identifier token

isArray

private final boolean isArray

TRUE if this symbol is an array.

loc

private final TokenLocation loc

The location of the symbol definition.

name

private final String name

The name of the token.

varLocation

private final int varLocation

The location of this variable in the local variable table.

type

private final Type type

The type of this symbol

uses

private final List<TokenLocation> uses

The locations of the uses of this symbol.

Constructor Detail

Symbol

public Symbol(CMinusParser.type_specifier_return t,
              org.antlr.runtime.Token token)

The non-array constructor

Parameters:

t - The type of the symbol

token - The identifier for this token

Symbol

public Symbol(CMinusParser.type_specifier_return t,
              org.antlr.runtime.Token token,
              org.antlr.runtime.Token size)

The array constructor

Parameters:

t - The array type

token - The array name

size - The size of the array.

Symbol

public Symbol(Type ty,
              org.antlr.runtime.Token token)

Method Detail

getArraySize

public int getArraySize()

resetStackLocation

public static void resetStackLocation()

addUse

public void addUse(TokenLocation tl)

Add a usage of a symbol

Parameters:

tl - The location of the symbol

compareTo

public int compareTo(Symbol o)

Specified by:

compareTo in interface Comparable<Symbol>

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

getLocation

public TokenLocation getLocation()

Get the location of the definition of this symbol.

Returns:

getName

public String getName()

getVarLocation

public int getVarLocation()

getType

public Type getType()

toString

public String toString()

Overrides:

toString in class Object

isArray

public boolean isArray()