rlgamekit.interpreter
Class Functions

java.lang.Object
  rlgamekit.interpreter.Functions

public class Functions
extends java.lang.Object

A function collection for the interpreted language. Subclass this to add new functions for your project. The method names of this class (or subclass) must match the command names from the scripting language to be interpreted.

Field Summary

protected int	currentLine Keep track of current line in script, to report errors on a per-line basis.
protected java.util.HashMap<java.lang.String,java.lang.String>	symbols Symbol table.
protected Tokenizer	tokenizer Helper to turn a line of parameters into a list of tokens

Constructor Summary

Functions()

Method Summary

void	add(java.lang.String line) Example: Add numeric token values and set result to a variable
void	append(java.lang.String line) Example: Append token values to a variable
void	div(java.lang.String line) Example: Divide numeric token values and set result to a variable
void	echo(java.lang.String line) Example: Echo some values to the standard output channel
void	mul(java.lang.String line) Example: Multiply numeric token values and set result to a variable
protected void	reportError(java.lang.String message) Report an error.
void	set(java.lang.String line) Example: Set a variable to a value
void	sub(java.lang.String line) Example: Subtract numeric token values and set result to a variable

Methods inherited from class java.lang.Object

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

Field Detail

tokenizer

protected Tokenizer tokenizer

Helper to turn a line of parameters into a list of tokens

symbols

protected java.util.HashMap<java.lang.String,java.lang.String> symbols

Symbol table. The variable's values are kept here. Key is the variable name, value the variable's current value.

currentLine

protected int currentLine

Keep track of current line in script, to report errors on a per-line basis.

Constructor Detail

Functions

public Functions()

Method Detail

set

public void set(java.lang.String line)

Example: Set a variable to a value

Parameters:

line - The line from the script with the variable name and value

append

public void append(java.lang.String line)

Example: Append token values to a variable

Parameters:

line - The line from the script

add

public void add(java.lang.String line)

Example: Add numeric token values and set result to a variable

Parameters:

line - The line from the script

sub

public void sub(java.lang.String line)

Example: Subtract numeric token values and set result to a variable

Parameters:

line - The line from the script

mul

public void mul(java.lang.String line)

Example: Multiply numeric token values and set result to a variable

Parameters:

line - The line from the script

div

public void div(java.lang.String line)

Example: Divide numeric token values and set result to a variable

Parameters:

line - The line from the script

echo

public void echo(java.lang.String line)

Example: Echo some values to the standard output channel

Parameters:

line - The line from the script

reportError

protected void reportError(java.lang.String message)

Report an error. Subclasses may need to redefine this for their needs.

Parameters:

message - The message to report.