Method getVariableSignature

src/backend/function-node.js:800–871

(ast, returnRawValue)

  }

  getVariableSignature(ast, returnRawValue) {
    if (!this.isAstVariable(ast)) {
      throw new Error(`ast of type "${ ast.type }" is not a variable signature`);
    }
    if (ast.type === 'Identifier') {
      return 'value';
    }
    const signature = [];
    while (true) {
      if (!ast) break;
      if (ast.computed) {
        signature.push('[]');
      } else if (ast.type === 'ThisExpression') {
        signature.unshift('this');
      } else if (ast.property && ast.property.name) {
        if (
          ast.property.name === 'x' ||
          ast.property.name === 'y' ||
          ast.property.name === 'z'
        ) {
          signature.unshift(returnRawValue ? '.' + ast.property.name : '.value');
        } else if (
          ast.property.name === 'constants' ||
          ast.property.name === 'thread' ||
          ast.property.name === 'output'
        ) {
          signature.unshift('.' + ast.property.name);
        } else {
          signature.unshift(returnRawValue ? '.' + ast.property.name : '.value');
        }
      } else if (ast.name) {
        signature.unshift(returnRawValue ? ast.name : 'value');
      } else if (ast.callee && ast.callee.name) {
        signature.unshift(returnRawValue ? ast.callee.name + '()' : 'fn()');
      } else if (ast.elements) {
        signature.unshift('[]');
      } else {
        signature.unshift('unknown');
      }
      ast = ast.object;
    }

    const signatureString = signature.join('');
    if (returnRawValue) {
      return signatureString;
    }

    const allowedExpressions = [
      'value',
      'value[]',
      'value[][]',
      'value[][][]',
      'value[][][][]',
      'value.value',
      'value.thread.value',
      'this.thread.value',
      'this.output.value',
      'this.constants.value',