Package gnu.jel

Class Parser

java.lang.Object

gnu.jel.Parser

public class Parser
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field	Description
protected int	c
int	ct_column	Column, where the current token started
int	ct_line	Line, where the current token started
int	type	type of the current token
java.lang.Object	val	value of the current token wrapped into a reflection object

Constructor Summary

Constructors

Constructor	Description
Parser(java.lang.String in, Library lib)	Initializes the parser.

Method Summary

Modifier and Type	Method	Description
protected void	consume(int cc)
void	error(int code, java.lang.Object param, int column)
boolean	isCast()
void	nextToken()
OP	parse(java.lang.Class<?> resultType)	Parses expression.
protected int	read()	Reads character from underlying Reader.

Methods inherited from class java.lang.Object

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

Field Details

c

protected int c

ct_column

public int ct_column

Column, where the current token started

ct_line

public int ct_line

Line, where the current token started

val

public java.lang.Object val

value of the current token wrapped into a reflection object

type

public int type

type of the current token

Constructor Details

Parser

public Parser(java.lang.String in, Library lib)

Initializes the parser.

Parameters:

in - expression to parse

lib - library to resolve functions in

Method Details

read

protected int read()

Reads character from underlying Reader.

Additionally it counts line and column numbers. The read character is automatically set as a current char of this Tokenizer.

Returns:

next character from the selected input.

error

public void error(int code, java.lang.Object param, int column) throws CompilationException

Throws:

CompilationException

consume

protected void consume(int cc) throws CompilationException

Throws:

CompilationException

nextToken

public void nextToken() throws CompilationException

Throws:

CompilationException

isCast

public boolean isCast()

parse

public OP parse(java.lang.Class<?> resultType) throws CompilationException

Parses expression.

Parameters:

resultType - the type to convert the result into

Returns:

top of the parse tree

Throws:

CompilationException