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CodeTransform.cs
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42 lines (39 loc) · 1.29 KB
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace CodeNavigator
{
class CodeTransform
{
internal static String ReplaceKeyword(String code, String keyword, String newKeyword)
{
if (code.Length == 0 || keyword.Length == 0)
return code;
//find keyword and check if char before and after are non-keyword chars
int p = 0;
int pCopyPos = 0;
StringBuilder res = new StringBuilder();
while ((p = code.IndexOf(keyword, p)) != -1)
{
int pEnd = p + keyword.Length;
if ((p == 0 || !CodeAnalyzer.IsIdentifierChar(code[p - 1]))
&& (pEnd == code.Length - 1 || !CodeAnalyzer.IsIdentifierChar(code[pEnd])))
{
res.Append(code.Substring(pCopyPos, p - pCopyPos));
res.Append(newKeyword);
pCopyPos = pEnd;
}
p = pEnd;
}
if (pCopyPos == 0)
return code;
else
{
res.Append(code.Substring(pCopyPos, code.Length - pCopyPos));
return res.ToString();
}
}
}
}