org.extex.ocpware.compiler.expression
Class Expression

java.lang.Object
  org.extex.ocpware.compiler.expression.Expression

public class Expression
extends java.lang.Object

This class represents an expression.

Version:

$Revision$

Author:

Gerd Neugebauer

Constructor Summary

Expression()
Creates a new object.

Method Summary

void	compile(CompilerState cs) Compile an expression in ΩCP instructions and store them in a compiler state.
java.lang.String	getLeftState() Getter for leftState.
java.util.List<Expr>	getPushBack() Getter for pushBack.
Right	getRight() Getter for right.
RightState	getState() Getter for state.
java.util.List<Left>	getTotalLeft() Getter for totalLeft.
static Expression	parse(ParserStream stream) Parse an expression.
static java.util.List<Expression>	parseExpressions(ParserStream stream) Parse a list of expressions.
void	setLeftState(java.lang.String leftState) Setter for leftState.
void	setPushBack(java.util.List<Expr> pushBack) Setter for pushBack.
void	setRight(Right right) Setter for right item.
void	setState(RightState state) Setter for state.
void	setTotalLeft(java.util.List<Left> totalLeft) Setter for totalLeft.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

Expression

public Expression()

Creates a new object.

Method Detail

parse

public static Expression parse(ParserStream stream)
                        throws java.io.IOException,
                               SyntaxException

Parse an expression.

Parameters:

stream - the input stream

Returns:

the list of expressions found

Throws:

java.io.IOException - in case of an I/O error

SyntaxException - in case of a syntax error

parseExpressions

public static java.util.List<Expression> parseExpressions(ParserStream stream)
                                                   throws java.io.IOException,
                                                          SyntaxException

Parse a list of expressions.

Parameters:

stream - the input stream

Returns:

the list of expressions found

Throws:

java.io.IOException - in case of an I/O error

SyntaxException - in case of a syntax error

compile

public void compile(CompilerState cs)
             throws ArgmentTooBigException,
                    java.io.IOException,
                    IllegalOpcodeException,
                    StateNotDefinedException,
                    TableNotDefinedException,
                    AliasNotDefinedException

Compile an expression in ΩCP instructions and store them in a compiler state.

Parameters:

cs - the compiler state

Throws:

AliasNotDefinedException - in case that no matching alias is known for a symbolic table reference

ArgmentTooBigException - in case that an argument is encountered which does not fit into two bytes

java.io.IOException - in case of an I/O error

StateNotDefinedException

TableNotDefinedException - in case that no matching table is known for a symbolic table reference

IllegalOpcodeException - in case of an illegal op code

getLeftState

public java.lang.String getLeftState()

Getter for leftState.

Returns:

the leftState

getPushBack

public java.util.List<Expr> getPushBack()

Getter for pushBack.

Returns:

the pushBack

getRight

public Right getRight()

Getter for right.

Returns:

the right

getState

public RightState getState()

Getter for state.

Returns:

the state

getTotalLeft

public java.util.List<Left> getTotalLeft()

Getter for totalLeft.

Returns:

the totalLeft

setLeftState

public void setLeftState(java.lang.String leftState)

Setter for leftState.

Parameters:

leftState - the leftState to set

setPushBack

public void setPushBack(java.util.List<Expr> pushBack)

Setter for pushBack.

Parameters:

pushBack - the pushBack to set

setRight

public void setRight(Right right)

Setter for right item.

Parameters:

right - the right item to set

setState

public void setState(RightState state)

Setter for state.

Parameters:

state - the state to set

setTotalLeft

public void setTotalLeft(java.util.List<Left> totalLeft)

Setter for totalLeft.

Parameters:

totalLeft - the totalLeft to set

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

See Also:

Object.toString()