Please help on QRegExp

**lni** · 22nd September 2011, 08:03

Hi,

I need to create a Qt script dynamically from user input formular using QRegExp. I got completely lose. Please help.

I have a list of QVector<float> a, aa, b, etc... which I can transfer to QScriptEngine.

I have a QLineEdit to allow user to enter their own formular to compute a new one, for instance, use can enter the following string (case insensitive):

math.max(a)/math.min(aa)*b+aa/b-Math.pow(aa)/a/MATH.pow(a,2.14)

I need to convert this string into QtScript dynamically, so it should become:

Qt Code:

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var max_a = max( a );     // max is a global function somewher in my script library
var min_aa = min( aa );   // min is a global function somewher in my script library
 
var result = new Array;
for ( var idx = 0; idx < a.length; idx++ ) {
  result[ idx ] = max_a / min_aa * b[ idx ] + aa[ idx ] / b[ idx ] - Math.pow( aa[ idx ] ) / a[ idx ] / Math.pow( a[ idx ], 2.14 );
}

var max_a = max( a );     // max is a global function somewher in my script library
var min_aa = min( aa );   // min is a global function somewher in my script library

var result = new Array;
for ( var idx = 0; idx < a.length; idx++ ) {
  result[ idx ] = max_a / min_aa * b[ idx ] + aa[ idx ] / b[ idx ] - Math.pow( aa[ idx ] ) / a[ idx ] / Math.pow( a[ idx ], 2.14 );
}

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I believe I need to use QRegExp, but am unable to get it done.

Many thanks!!