Package com.scriptbasic.syntax

Class AbstractBasicProgramPostprocessing

java.lang.Object

com.scriptbasic.syntax.AbstractBasicProgramPostprocessing

All Implemented Interfaces:

BuildableProgram, Program

Direct Known Subclasses:

BasicProgram

public abstract class AbstractBasicProgramPostprocessing
extends Object
implements BuildableProgram

Author:

Peter Verhas date Jul 18, 2012

Constructor Summary

Constructors

Constructor	Description
AbstractBasicProgramPostprocessing()

Method Summary

Modifier and Type	Method	Description
protected abstract Command	getFirstCommand()
Command	getStartCommand()
protected abstract Map<String,CommandSub>	getSubroutineMap()
void	postprocess()	Calling this method signals that all the commands are added to the program.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.scriptbasic.interfaces.BuildableProgram

addCommand, reset

Methods inherited from interface com.scriptbasic.interfaces.Program

getCommands, getNamedCommand, getNamedCommandNames

Constructor Details

AbstractBasicProgramPostprocessing

public AbstractBasicProgramPostprocessing()

Method Details

getStartCommand

public Command getStartCommand()

Specified by:

getStartCommand in interface Program

getSubroutineMap

protected abstract Map<String,CommandSub> getSubroutineMap()

getFirstCommand

protected abstract Command getFirstCommand()

postprocess

public void postprocess()
                 throws AnalysisException

Description copied from interface: BuildableProgram

Calling this method signals that all the commands are added to the program. This method has to perform all the polishing of the built program that are to be done after the commands are analyzed. These include:

• optimizing expressions
• recalculating if/elseif/else/endif jumps
• building subroutine symbol table
• checking syntax analysis rules that apply to the whole program and are easier to implement this way than keeping different state informations during the syntax analysis, which is line oriented. For example checking that all LOCAL and GLOBAL declarations in a SUB are before any executable statement, subs are not nested...

Specified by:

postprocess in interface BuildableProgram

Throws:

AnalysisException - when the postprocessing discovers syntax errors