autumn.lang.compiler.ast.literals

Class AbstractNumericLiteral<T>

java.lang.Object

autumn.lang.compiler.ast.literals.AbstractNumericLiteral<T>

Direct Known Subclasses:

BigDecimalLiteral, BigIntegerLiteral, ByteLiteral, CharLiteral, DoubleLiteral, FloatLiteral, IntLiteral, LongLiteral, ShortLiteral

public abstract class AbstractNumericLiteral<T>
extends java.lang.Object

Instances of this class represent numeric literals in Autumn source-code.

Constructor Summary

Constructors

Constructor and Description
AbstractNumericLiteral(java.lang.String source) Sole Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	isMalformed() This method determines whether this literal can be converted to a number accurately.
abstract boolean	isParsable() This method determines whether this literal would be recognized by the parser.
java.lang.String	source() This method returns the source-code representation of this literal.
java.lang.String	sourceWithoutUnderscores() This method returns the source-code representation of this literal with underscores removed.
java.lang.String	toString() This method returns a string representation of this literal.
abstract T	value() This method converts this literal to its numeric equivalent.

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractNumericLiteral

public AbstractNumericLiteral(java.lang.String source)

Sole Constructor.

Parameters:

source - is this literal as it appeared in the source-code.

Throws:

java.lang.NullPointerException - if source is null.

java.lang.IllegalArgumentException - if source.length() equals zero.

Method Detail

value

public abstract T value()

This method converts this literal to its numeric equivalent.

Returns:

the numeric representation of this literal, or null, if a lossless conversion is not possible.

isParsable

public abstract boolean isParsable()

This method determines whether this literal would be recognized by the parser.

Note: Under some circumstances, a literal may be malformed and parse-able.

Returns:

true, iff the parser would recognize this literal.

source

public final java.lang.String source()

This method returns the source-code representation of this literal.

Returns:

this literal, as it appeared in the source code.

sourceWithoutUnderscores

public final java.lang.String sourceWithoutUnderscores()

This method returns the source-code representation of this literal with underscores removed.

Returns:

this literal, as it appeared in the source code, excluding any underscores.

isMalformed

public final boolean isMalformed()

This method determines whether this literal can be converted to a number accurately.

Returns:

true, if a conversion would lose information.

toString

public final java.lang.String toString()

This method returns a string representation of this literal.

Overrides:

toString in class java.lang.Object

Returns:

source()