Function parseVariablePath

newIDE/app/src/EditorFunctions/ApplyVariableChange.js:33–98

(
  variablePath: string
)

// Parse variable path to handle both dot notation and array indexing
const parseVariablePath = (
  variablePath: string
): Array<{| type: 'property' | 'index', value: string |}> => {
  const segments = [];
  let currentSegment = '';
  let i = 0;

  while (i < variablePath.length) {
    const char = variablePath[i];

    if (char === '.') {
      // End of property segment
      if (currentSegment.trim()) {
        segments.push({ type: 'property', value: currentSegment.trim() });
        currentSegment = '';
      }
      i++;
    } else if (char === '[') {
      // Start of array index
      if (currentSegment.trim()) {
        segments.push({ type: 'property', value: currentSegment.trim() });
        currentSegment = '';
      }

      // Find the closing bracket
      i++; // Skip opening bracket
      let indexContent = '';
      let foundClosingBracketWithProperIndex = false;
      while (i < variablePath.length && variablePath[i] !== ']') {
        indexContent += variablePath[i];
        i++;
      }

      if (i < variablePath.length && variablePath[i] === ']') {
        // Valid array index
        const indexValue = indexContent.trim();
        if (indexValue && !isNaN(parseInt(indexValue, 10))) {
          segments.push({ type: 'index', value: indexValue });
          foundClosingBracketWithProperIndex = true;
        } else {
          throw new Error(
            `Content of the index is invalid ("${indexValue}") - it should be a number.`
          );
        }
        i++; // Skip closing bracket
      }

      if (!foundClosingBracketWithProperIndex) {
        throw new Error(
          'Improperly formatted array index. Please check the variable path - it should be formatted like this: `myVar[1].prop`, `myVar`, `myVar.prop`, etc...'
        );
      }
    } else {
      currentSegment += char;
      i++;
    }
  }