org.vishia.zbnf.ebnfConvert

Class EBNFread

java.lang.Object

org.vishia.zbnf.ebnfConvert.EBNFread

public class EBNFread
extends java.lang.Object

This class is the destination to storing parse results with ebnf.zbnf, the interpretation of EBNF sources. The used syntax is:

$endlineComment=##.



EBNFmain::= {  }\e.

EBNFblock::= [PRODUCTION RULE[S]: | SYNTAX:] {  } [B\.| SEMANTICS:|\e] <*|PRODUCTION RULE:|PRODUCTION RULES:|SYNTAX:|\e?pdftext>.

EBNFdef::= <$?cmpnName> ::= .


EBNFalt::=
{ [? SEMANTICS: | B\. ]        ##not SEMANTICS:, abort loop
  [  
  | \|     ## | alternative   Note: it is lower prior then concatenation.
  ]                
}.

EBNFexpr::=
{ [? SEMANTICS: | B\. ]        ##not SEMANTICS:, abort loop
  
}.

EBNFitem::=
| '<*'?literal>'               ## 'literal'
| <""?literal>                 ## "literal"
| \<<*\>?comment>\>            ## 
| <$?cmpn> [? ::= ]            ##ident::= breaks the loop, it is a new definition.
| \[  \]      ## [ simple option ]
| \{  \}  ## { repetition }  Note: can be empty. 
| (  )   ##sub syntax with own structure
 

Note: The EBNF syntax came from a copy of text in a pdf document.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	EBNFread.EBNFalt It is either the whole syntax of a component without toplevel alternatives or one alternative on toplevel.
static class	EBNFread.EBNFdef An instance of this contains a EBNF component definition like name::=SYNTAX.
static class	EBNFread.EBNFexpr
static class	EBNFread.EBNFitem A non derived item has no sub items.
static class	EBNFread.XXXXXEBNFmain

Field Summary

Fields

Modifier and Type	Field and Description
java.util.Map<java.lang.String,EBNFread.EBNFdef>	idx_cmpnDef
java.util.List<EBNFread.EBNFdef>	list_cmpnDef
java.lang.String	pdftext
static java.lang.String	sVersion Version, history and license.

Constructor Summary

Constructors

Constructor and Description
EBNFread()

Method Summary

Modifier and Type	Method and Description
void	add_EBNFdef(EBNFread.EBNFdef val)
EBNFread.EBNFdef	new_EBNFdef() From ZBNF syntax: <...?

Methods inherited from class java.lang.Object

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

Field Detail

sVersion

public static final java.lang.String sVersion

Version, history and license.

• 2019-05-14 Hartmut creation:

Copyright/Copyleft: For this source the LGPL Lesser General Public License, published by the Free Software Foundation is valid. It means:

1. You can use this source without any restriction for any desired purpose.
2. You can redistribute copies of this source to everybody.
3. Every user of this source, also the user of redistribute copies with or without payment, must accept this license for further using.
4. But the LPGL is not appropriate for a whole software product, if this source is only a part of them. It means, the user must publish this part of source, but don't need to publish the whole source of the own product.
5. You can study and modify (improve) this source for own using or for redistribution, but you have to license the modified sources likewise under this LGPL Lesser General Public License. You mustn't delete this Copyright/Copyleft inscription in this source file.

If you are intent to use this sources without publishing its usage, you can get a second license subscribing a special contract with the author.

See Also:

Constant Field Values

list_cmpnDef

public java.util.List<EBNFread.EBNFdef> list_cmpnDef

idx_cmpnDef

public java.util.Map<java.lang.String,EBNFread.EBNFdef> idx_cmpnDef

pdftext

public java.lang.String pdftext

Constructor Detail

EBNFread

public EBNFread()

Method Detail

new_EBNFdef

public EBNFread.EBNFdef new_EBNFdef()

From ZBNF syntax: <...?cmpnDef>

add_EBNFdef

public void add_EBNFdef(EBNFread.EBNFdef val)