Function extractFunctions

scripts/sparc2/src/diff/diffTracker.ts:342–393

* Extract functions from text * @param text Source code text * @returns Map of function names to their content and line numbers

(
  text: string,
)

 * @returns Map of function names to their content and line numbers
 */
function extractFunctions(
  text: string,
): Record<string, { content: string; startLine: number; endLine: number }> {
  const functions: Record<string, { content: string; startLine: number; endLine: number }> = {};
  const lines = text.split("\n");

  // Simple regex to find function declarations
  // This is a basic implementation and might need to be enhanced for different languages
  const functionRegex = /^\s*(function|async function)\s+(\w+)\s*\(/;

  let currentFunction: string | null = null;
  let functionStart = -1;
  let braceCount = 0;

  for (let i = 0; i < lines.length; i++) {
    const line = lines[i];

    if (currentFunction === null) {
      // Look for function declaration
      const match = line.match(functionRegex);
      if (match) {
        currentFunction = match[2];
        functionStart = i;
        braceCount = 0;

        // Count opening braces in this line
        for (const char of line) {
          if (char === "{") braceCount++;
          else if (char === "}") braceCount--;
        }
      }
    } else {
      // Count braces to find the end of the function
      for (const char of line) {
        if (char === "{") braceCount++;
        else if (char === "}") braceCount--;
      }

      // If braces are balanced, we've found the end of the function
      if (braceCount === 0) {
        functions[currentFunction] = {
          content: lines.slice(functionStart, i + 1).join("\n"),
          startLine: functionStart,
          endLine: i,
        };
        currentFunction = null;
      }
    }
  }

  return functions;
}

/**
 * Apply a diff to a text