uk.ac.man.cs.rainbow.temp
Class JSCompiler

java.lang.Object
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  +--uk.ac.man.cs.rainbow.Compiler
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        +--uk.ac.man.cs.rainbow.temp.JSCompiler

public class JSCompiler

extends Compiler

A simple compiler. This uses John Sargeant's semproc to implement its main functionality. Note that this class is only public for documentation purposes - it has no useful public features beyond that of its superclass.

See Also:

Rainbow Implementors Guide

Inner Class Summary

protected static class

JSCompiler.JSSemanticErrors Specialised error parsing and generating subclass.

Inner classes inherited from class uk.ac.man.cs.rainbow.Compiler

Compiler.Error, Compiler.Errors, Compiler.Exception, Compiler.ParseError, Compiler.PreciseError, Compiler.SemanticError, Compiler.Warning

Field Summary

static String

encoding The encoding of messages passed to and from the external compiler.

Constructor Summary

JSCompiler()
Create a new compiler object connected to the external compiler specified in the rainbow.compiler.js.command property.

JSCompiler(String compilerCmd)
Create a new compiler object connected to the specified external compiler.

Method Summary

protected void	close() Shut down the objects connection to its external compiler.
protected void	finalize()
static String	getCompilerCommand() Read the command line to use to invoke an external compiler from the system properties list.
String	rainbow2rif(String rainbow) Convert Rainbow text to RIF text.
String	rif2rasm(String rif) Convert RIF text into RASM text.

Methods inherited from class uk.ac.man.cs.rainbow.Compiler

getInstance, rainbow2code, rainbow2rapa, rainbow2rasm, rasm2code, rif2code

Methods inherited from class java.lang.Object

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

Field Detail

encoding

public static final String encoding

The encoding of messages passed to and from the external compiler.

Constructor Detail

JSCompiler

public JSCompiler(String compilerCmd)
           throws IOException

Create a new compiler object connected to the specified external compiler.

JSCompiler

public JSCompiler()
           throws IOException

Create a new compiler object connected to the external compiler specified in the rainbow.compiler.js.command property.

See Also:

getCompilerCommand()

Method Detail

close

protected void close()

Shut down the objects connection to its external compiler.

finalize

protected void finalize()

Overrides:

finalize in class Object

getCompilerCommand

public static String getCompilerCommand()

Read the command line to use to invoke an external compiler from the system properties list. The name of the property looked up is rainbow.compiler.js.command and it is assumed to exist.

rainbow2rif

public String rainbow2rif(String rainbow)
                   throws RainbowException

Convert Rainbow text to RIF text. Except we don't, always failing with an exception instead.

Overrides:

rainbow2rif in class Compiler

Throws:

Compiler.Exception - Always! This method isn't really implemented at all.

rif2rasm

public String rif2rasm(String rif)
                throws IOException,
                       RainbowException

Convert RIF text into RASM text.

Overrides:

rif2rasm in class Compiler

Parameters:

rif - The RIF text to convert.

Returns:

The converted RASM text.

Throws:

IOException - If contact with the external compiler is lost or something else goes wrong with the external communications.

Compiler.Errors - If there were (semantic) errors in the RIF text.

RainbowException - If something else goes wrong (like the compiler not following the correct communication protocol.)