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tokenizer.cpp
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tokenizer.cpp
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#include "tokenizer.h"
Tokenizer::Tokenizer()
{
}
Tokenizer::~Tokenizer()
{
}
QStringList Tokenizer::token(QString input)
{
QStringList result;
QStringList handledResult;
while(input.size())
{
for(int i=0;i<=input.size();++i)
{
/*The case of the last character*/
if(i==input.size())
{
result.append(input);
for(int i=0;i<result.size();++i)
{
if(result[i]!=" ") {handledResult.append(result[i]);}
}
return handledResult;
}
if((input[i]=="*"&&input[i+1]=="*")||(input[i]=="="&&input[i+1]=="=")||(input[i]==">"&&input[i+1]=="=")||(input[i]=="<"&&input[i+1]=="=")||(input[i]=="!"&&input[i+1]=="="))
{
if(i!=0)
{
result.append(input.left(i));
}
result.append(input.mid(i,2));
input=input.mid(i+2);
break;
}
if((input[i]=="("&&input[i+1]=="-")||(input[i]=="="&&input[i+1]=="-"))
{
if(i!=0)
{
result.append(input.left(i));
}
result.append(input.mid(i,1));
result.append("0");
result.append(input.mid(i+1,1));
input=input.mid(i+2);
break;
}
if(input[i]==" "||input[i]=="+"||input[i]=="-"||input[i]=="*"||input[i]=="/"||input[i]=="%"||input[i]=="="||input[i]=="<"||input[i]==">"||input[i]=="("||input[i]==")")
{
if(i!=0)
{
result.append(input.left(i));
}
result.append(input.mid(i,1));
input=input.mid(i+1);
break;
}
}
}
/*Omit spaces*/
for(int i=0;i<result.size();++i)
{
if(result[i]!=" ") {handledResult.append(result[i]);}
}
return handledResult;
}