dk.rode.thesis.interpreter
Class Expression.SymbolIdiom

java.lang.Object
  dk.rode.thesis.interpreter.Expression.SymbolIdiom

Enclosing interface:

Expression<E>

public static final class Expression.SymbolIdiom
extends Object

The symbol idiom ensures that cyclic expression references will be represented correctly in symbolic representation starting from a given expression.

Author:

Gunni Rode / rode.dk

See Also:

Context.reset(), Context.touch(Expression)

Constructor Summary

private

Expression.SymbolIdiom() Private off-limit constructor.

Method Summary

static StringBuilder	asSymbol(Context context, Expression<?> parent, Expression<?> child) See Expression.asSymbol(Context).
static StringBuilder	asSymbol(Context context, Expression<?> parent, Expression<?> child, StringBuilder sb) See Expression.asSymbol(Context).

Methods inherited from class java.lang.Object

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

Constructor Detail

Expression.SymbolIdiom

private Expression.SymbolIdiom()

Private off-limit constructor.

Method Detail

asSymbol

public static final StringBuilder asSymbol(Context context,
                                           Expression<?> parent,
                                           Expression<?> child)
                                    throws ExpressionException

See Expression.asSymbol(Context).

Parameters:

context - The context to use; cannot be null.

parent - The parent expression; cannot be null.

child - The child expression; cannot be null.

Returns:

The symbolic representation; never null.

Throws:

NullPointerException - If either argument is null.

ExpressionException - If the symbol cannot be generated.

asSymbol

public static final StringBuilder asSymbol(Context context,
                                           Expression<?> parent,
                                           Expression<?> child,
                                           StringBuilder sb)
                                    throws ExpressionException

See Expression.asSymbol(Context).

Parameters:

context - The context to use; cannot be null.

parent - The parent expression; cannot be null.

child - The child expression; cannot be null.

sb - The string builder to append the symbolic representation to; cannot be null.

Returns:

sb; never null.

Throws:

NullPointerException - If either argument is null.

ExpressionException - If the symbol cannot be generated.