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KDECore

KCharMacroExpander Class Reference

Abstract base class for single char macro substitutors. More...

#include <kmacroexpander.h>

Inheritance diagram for KCharMacroExpander:

Inheritance graph
[legend]

List of all members.


Public Member Functions

 KCharMacroExpander (QChar c= '%')

Protected Member Functions

virtual int expandEscapedMacro (const QString &str, uint pos, QStringList &ret)
virtual bool expandMacro (QChar chr, QStringList &ret)=0
virtual int expandPlainMacro (const QString &str, uint pos, QStringList &ret)

Detailed Description

Abstract base class for single char macro substitutors.

Use this instead of the functions in the KMacroExpander namespace if speculatively pre-filling the substitution map would be too expensive.

See KWordMacroExpander for a sample application.

Since:
3.3
Author:
Oswald Buddenhagen <ossi@kde.org>

Definition at line 224 of file kmacroexpander.h.


Constructor & Destructor Documentation

KCharMacroExpander::KCharMacroExpander ( QChar  c = '%'  )  [inline]

Constructor.

Parameters:
c escape char indicating start of macros, or QChar::null for none

Definition at line 231 of file kmacroexpander.h.


Member Function Documentation

int KCharMacroExpander::expandEscapedMacro ( const QString &  str,
uint  pos,
QStringList &  ret 
) [protected, virtual]

This function is called every time the escape char is found if it is not QChar::null.

It should determine whether the string starting at pos witin str is a valid macro and return the substitution value for it if so.

Parameters:
str the input string
pos the offset within str. Note that this is the position of the occurrence of the escape char
ret return value: the string to substitute for the macro
Returns:
if greater than zero, the number of chars at pos in str to substitute with ret (i.e., a valid macro was found). if less than zero, subtract this value from pos (to skip a macro, i.e., substitute it with itself). zero requests no special action.

Reimplemented from KMacroExpanderBase.

Definition at line 443 of file kmacroexpander.cpp.

virtual bool KCharMacroExpander::expandMacro ( QChar  chr,
QStringList &  ret 
) [protected, pure virtual]

Return substitution list ret for single-character macro chr.

Parameters:
chr the macro to expand
ret return variable reference. It is guaranteed to be empty when expandMacro is entered.
Returns:
true iff chr was a recognized macro name

int KCharMacroExpander::expandPlainMacro ( const QString &  str,
uint  pos,
QStringList &  ret 
) [protected, virtual]

This function is called for every single char within the string if the escape char is QChar::null.

It should determine whether the string starting at pos within str is a valid macro and return the substitution value for it if so.

Parameters:
str the input string
pos the offset within str
ret return value: the string to substitute for the macro
Returns:
if greater than zero, the number of chars at pos in str to substitute with ret (i.e., a valid macro was found). if less than zero, subtract this value from pos (to skip a macro, i.e., substitute it with itself). zero requests no special action.

Reimplemented from KMacroExpanderBase.

Definition at line 435 of file kmacroexpander.cpp.


The documentation for this class was generated from the following files:
  • kmacroexpander.h
  • kmacroexpander.cpp

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