jminusminus

Class LocalContext

java.lang.Object

jminusminus.Context

jminusminus.LocalContext

Direct Known Subclasses:

MethodContext

 class LocalContext
extends Context

A local context is a context (scope) in which local variables (including formal parameters) can be declared. Local variables are allocated at fixed offsets from the base of the current method's stack frame; this is done during anaysis. The definitions for local variables record these offsets. The offsets are used in code generation.

Field Summary

Fields

Modifier and Type	Field and Description
protected int	offset Next offset for a local variable.

Fields inherited from class jminusminus.Context

classContext, compilationUnitContext, entries, surroundingContext

Constructor Summary

Constructors

Constructor and Description
LocalContext(Context surrounding) Construct a local context.

Method Summary

Methods

Modifier and Type	Method and Description
int	nextOffset() Allocate a new offset (eg for a parameter or local variable).
int	offset() The "next" offset.
void	writeToStdOut(PrettyPrinter p) Write the contents of this context to STDOUT.

Methods inherited from class jminusminus.Context

addEntry, addType, classContext, compilationUnitContext, definingType, lookup, lookupType, methodContext, names, surroundingContext

Methods inherited from class java.lang.Object

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

Field Detail

offset

protected int offset

Next offset for a local variable.

Constructor Detail

LocalContext

public LocalContext(Context surrounding)

Construct a local context. A local context is constructed for each block.

Parameters:

surrounding - the surrounding context.

Method Detail

offset

public int offset()

The "next" offset. A simple getter. Not to be used for allocating new offsets (nextOffset() is used for that).

Returns:

the next available offset.

nextOffset

public int nextOffset()

Allocate a new offset (eg for a parameter or local variable).

Returns:

the next allocated offset.

writeToStdOut

public void writeToStdOut(PrettyPrinter p)

Description copied from class: Context

Write the contents of this context to STDOUT.

Overrides:

writeToStdOut in class Context

Parameters:

p - for pretty printing with indentation.