Class ParserContextChain

java.lang.Object

com.igormaznitsa.prologparser.ParserContextChain

All Implemented Interfaces:

ParserContext

public class ParserContextChain
extends Object
implements ParserContext

Auxiliary class allows to make chain of prolog contexts.

Field Summary

Fields

Modifier and Type	Field	Description
private final ParserContext[]	contexts
private final int	minDetectedAllowedBufferSize
private final int	tokenizerFlags

Fields inherited from interface ParserContext

FLAG_BLOCK_COMMENTS, FLAG_CURLY_BRACKETS, FLAG_DOT2_AS_LIST, FLAG_NONE, FLAG_VAR_AS_FUNCTOR, FLAG_ZERO_QUOTATION_ALLOWS_WHITESPACE_CHAR, FLAG_ZERO_QUOTATION_CHARCODE, FLAG_ZERO_STRUCT

Constructor Summary

Constructors

Constructor	Description
ParserContextChain(ParserContext... contexts)

Method Summary

Modifier and Type	Method	Description
OpContainer	findOpForName(PrologParser source, String name)	Find operators for their name.
int	getFlags()	get parser flags for the parser context.
int	getMaxTokenizerBufferLength()	Get maximum allowed length value for internal parser text buffers.
boolean	hasOpStartsWith(PrologParser source, String namePrefix)	Check that the context contains an operator starts with some string
static ParserContext	of(ParserContext... contexts)

Methods inherited from class Object

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

Field Details

contexts

private final ParserContext[] contexts

tokenizerFlags

private final int tokenizerFlags

minDetectedAllowedBufferSize

private final int minDetectedAllowedBufferSize

Constructor Details

ParserContextChain

public ParserContextChain(ParserContext... contexts)

Method Details

of

public static ParserContext of(ParserContext... contexts)

getMaxTokenizerBufferLength

public int getMaxTokenizerBufferLength()

Description copied from interface: ParserContext

Get maximum allowed length value for internal parser text buffers.

Specified by:

getMaxTokenizerBufferLength in interface ParserContext

Returns:

maximum allowed text parser buffers length in chars

hasOpStartsWith

public boolean hasOpStartsWith(PrologParser source,
 String namePrefix)

Description copied from interface: ParserContext

Check that the context contains an operator starts with some string

Specified by:

hasOpStartsWith in interface ParserContext

Parameters:

source - source prolog parser making request, must not be null

namePrefix - string to be used to look for operator starts with it, must not be null

Returns:

true if there is such operator, false otherwise

findOpForName

public OpContainer findOpForName(PrologParser source,
 String name)

Description copied from interface: ParserContext

Find operators for their name.

Specified by:

findOpForName in interface ParserContext

Parameters:

source - source prolog parser making request, must not be null

name - name of operators, must not be null

Returns:

operator container if such one is found, null otherwise

getFlags

public int getFlags()

Description copied from interface: ParserContext

get parser flags for the parser context.

Specified by:

getFlags in interface ParserContext

Returns:

flags as bit field

See Also:

• ParserContext.FLAG_NONE
• ParserContext.FLAG_VAR_AS_FUNCTOR
• ParserContext.FLAG_BLOCK_COMMENTS
• ParserContext.FLAG_CURLY_BRACKETS
• ParserContext.FLAG_ZERO_QUOTATION_CHARCODE
• ParserContext.FLAG_ZERO_STRUCT