ParseText Class Reference

#include <parser.h>

List of all members.

Public Member Functions
	ParseText (QString input)
void	parse (QString text)
Value *	expr ()
Private Types
enum	Token {   text, var, openexpr, closeexpr,   eof }
Private Member Functions
Token	token ()
Token	string_to (unsigned char c)
bool	seperator (unsigned char c)
void	text_to ()
void	initText (QString text)
Value *	parse ()
bool	getLocation (QString text, int &C, int &R, bool &absolute_column, bool &absolute_row)
Value *	properVarType (QString tokentext)
Private Attributes
char *	fulltext
char *	currptr
QString	tokentext
Value *	expression

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Detailed Description

Definition at line 4 of file parser.h.

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Member Enumeration Documentation

enum ParseText::Token [private]

Enumerator: text  var  openexpr  closeexpr  eof  Definition at line 11 of file parser.h. {text, var, openexpr, closeexpr, eof} Token;

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Constructor & Destructor Documentation

ParseText::ParseText (  QString  input  )

Definition at line 9 of file parser.cpp. References currptr, expression, fulltext, and parse(). { fulltext=NULL; currptr = NULL; expression = NULL; parse(text); };

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Member Function Documentation

Value* ParseText::expr (   )  [inline]

Definition at line 23 of file parser.h. References expression. Referenced by IisCell::entered_changed(). {return expression;};

bool ParseText::getLocation (  QString  text, int &  C, int &  R, bool &  absolute_column, bool &  absolute_row )  [private]

Definition at line 46 of file parser.cpp. Referenced by properVarType(). { const char * t = text; const char * c = t; int column; int row; // column if (absolute_column=(*c=='$')) c++; column = 0; while(*c && !isdigit(*c) && *c!='$') { column=column*26+toupper(*c)-'A'; c++; } // row if (absolute_row=(*c=='$')) c++; row = 0; while(*c && isdigit(*c) && *c!='$') { row=row*10+toupper(*c)-'0'; c++; } // put out result C=column; R=row; return true; }

void ParseText::initText (  QString  text  )  [private]

Definition at line 100 of file parser.cpp. References currptr, expression, and fulltext. Referenced by parse(). { if (fulltext) free(fulltext); fulltext=strdup(text); currptr = fulltext; printf("To parse: %s\n",fulltext); expression = NULL; }

void ParseText::parse (  QString  text  )

Definition at line 17 of file parser.cpp. References expression, initText(), and parse(). { initText(text); expression = parse(); }

Value * ParseText::parse (   )  [private]

Definition at line 74 of file parser.cpp. References Expression::add(), closeexpr, eof, openexpr, properVarType(), text, token(), tokentext, and var. Referenced by parse(), and ParseText(). { Token t = token(); printf("%d\n",t); switch (t) { case text: return new TextValue(tokentext); case var: return properVarType(tokentext); case openexpr: { t = token(); if (t!=var) throw new ParseError("Operand is no operator"); Expression * result = new Expression(tokentext); Value * arg=NULL; while((arg=parse())) result->add(arg); return result; } case closeexpr: return NULL; case eof: throw new ParseError("Unexpected end of line"); }; throw new ParseError("Unexpected token"); return NULL; }

Value * ParseText::properVarType (  QString  tokentext  )  [private]

Definition at line 23 of file parser.cpp. References getLocation(). Referenced by parse(). { // can we parse a location from it ? int c,r; bool ac,ar; int i; if ((i=tokentext.find(':'))>=0) { printf("%s\n",(const char*)tokentext.left(i)); printf("%s\n",(const char*)tokentext.mid(i+1)); bool res = getLocation(tokentext.left(i),c,r,ac,ar); assert(res); Reference * a= new Reference(c,r,ac,ar); res = getLocation(tokentext.mid(i+1),c,r,ac,ar); assert(res); Reference * b= new Reference(c,r,ac,ar); return new Range(a,b); } if (getLocation(tokentext,c,r,ac,ar)) return new Reference(c,r,ac,ar); return new Variable(tokentext); }

bool ParseText::seperator (  unsigned char  c  )  [private]

Definition at line 129 of file parser.cpp. Referenced by text_to(). { return c==0 || c==' ' || c=='(' || c=='\'' || c=='"' || c==')'; }

ParseText::Token ParseText::string_to (  unsigned char  c  )  [private]

Definition at line 134 of file parser.cpp. References currptr, text, and tokentext. Referenced by token(). { char result[500]; int i = 0; while(*currptr && *currptr!=c) result[i++]=*(currptr++); if(*currptr==c) currptr++; result[i]=0; tokentext=result; return text; }

void ParseText::text_to (   )  [private]

Definition at line 146 of file parser.cpp. References currptr, seperator(), and tokentext. Referenced by token(). { char result[500]; int i = 0; while(!seperator(*currptr)) result[i++]=*(currptr++); result[i]=0; tokentext=result; }

ParseText::Token ParseText::token (   )  [private]

Definition at line 109 of file parser.cpp. References closeexpr, currptr, eof, openexpr, string_to(), text, text_to(), and var. Referenced by parse(). { if (!currptr) return eof; // remove whitespace) while(*currptr && isspace(*currptr)) currptr++; if (!*currptr) return eof; // check for the kind of token switch(*currptr) { case '(': currptr++; return openexpr; case ')': currptr++; return closeexpr; case '"': currptr++; return string_to('"'); case '\'': currptr++; return string_to('\''); } bool d = isdigit(*currptr); text_to(); if (d) return text; return var; }

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Member Data Documentation

char* ParseText::currptr [private]

Definition at line 8 of file parser.h. Referenced by initText(), ParseText(), string_to(), text_to(), and token().

Value* ParseText::expression [private]

Definition at line 10 of file parser.h. Referenced by expr(), initText(), parse(), and ParseText().

char* ParseText::fulltext [private]

Definition at line 7 of file parser.h. Referenced by initText(), and ParseText().

QString ParseText::tokentext [private]

Definition at line 9 of file parser.h. Referenced by parse(), string_to(), and text_to().

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The documentation for this class was generated from the following files:

• parser.h
• parser.cpp

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