Demonstrates the power of token-awareness by safely renaming a variable while ignoring its name inside a string literal—a common failure point for character-based Regex.

ID: 1172

See: What is uCalc? 
				
					using uCalcSoftware;

var uc = new uCalc();
var t = new uCalc.Transformer();

// A snippet of code where 'rate' is both a variable and part of a string
var source_code = """
rate = 0.05; // Set default rate
print("Current rate is: " + rate);
""";

Console.WriteLine("Original Code:");
Console.WriteLine(source_code);
Console.WriteLine("");

// Define a rule to rename the VARIABLE 'rate' to 'annual_rate'
t.FromTo("rate", "annual_rate");
t.SkipOver("// {text}");

// Run the transformation. The 'rate' inside the string is untouched.
Console.WriteLine("Transformed Code:");
Console.WriteLine(t.Transform(source_code));
				
			
Original Code:
rate = 0.05; // Set default rate
print("Current rate is: " + rate);

Transformed Code:
annual_rate = 0.05; // Set default rate
print("Current rate is: " + annual_rate);
Explore 600+ other examples
				
					#include <iostream>
#include "uCalc.h"

using namespace std;
using namespace uCalcSoftware;

int main() {
   uCalc uc;
   uCalc::Transformer t;

   // A snippet of code where 'rate' is both a variable and part of a string
   auto source_code = R"(rate = 0.05; // Set default rate
print("Current rate is: " + rate);)";

   cout << "Original Code:" << endl;
   cout << source_code << endl;
   cout << "" << endl;

   // Define a rule to rename the VARIABLE 'rate' to 'annual_rate'
   t.FromTo("rate", "annual_rate");
   t.SkipOver("// {text}");

   // Run the transformation. The 'rate' inside the string is untouched.
   cout << "Transformed Code:" << endl;
   cout << t.Transform(source_code) << endl;
}
				
			
Original Code:
rate = 0.05; // Set default rate
print("Current rate is: " + rate);

Transformed Code:
annual_rate = 0.05; // Set default rate
print("Current rate is: " + annual_rate);
Explore 600+ other examples
				
					Imports System
Imports uCalcSoftware
Public Module Program
   Public Sub Main()
      Dim uc As New uCalc()
      Dim t As New uCalc.Transformer()
      
      '// A snippet of code where 'rate' is both a variable and part of a string
      Dim source_code = "rate = 0.05; // Set default rate
print(""Current rate is: "" + rate);"
      
      Console.WriteLine("Original Code:")
      Console.WriteLine(source_code)
      Console.WriteLine("")
      
      '// Define a rule to rename the VARIABLE 'rate' to 'annual_rate'
      t.FromTo("rate", "annual_rate")
      t.SkipOver("// {text}")
      
      '// Run the transformation. The 'rate' inside the string is untouched.
      Console.WriteLine("Transformed Code:")
      Console.WriteLine(t.Transform(source_code))
   End Sub
End Module
				
			
Original Code:
rate = 0.05; // Set default rate
print("Current rate is: " + rate);

Transformed Code:
annual_rate = 0.05; // Set default rate
print("Current rate is: " + annual_rate);
Explore 600+ other examples