Class: Puppeteer::ExecutionContext::JavaScriptFunction

Inherits:
Object
  • Object
show all
Includes:
IfPresent
Defined in:
lib/puppeteer/execution_context.rb

Instance Method Summary collapse

Methods included from IfPresent

#if_present

Constructor Details

#initialize(execution_context, expression, args, return_by_value) ⇒ JavaScriptFunction

Returns a new instance of JavaScriptFunction.



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# File 'lib/puppeteer/execution_context.rb', line 101

def initialize(execution_context, expression, args, return_by_value)
  @execution_context = execution_context
  @expression = expression
  @return_by_value = return_by_value
  @args = args
end

Instance Method Details

#evaluate_with(client:, context_id:) ⇒ Object|JSHandle

Parameters:

Returns:



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# File 'lib/puppeteer/execution_context.rb', line 111

def evaluate_with(client:, context_id:)
  # `function` can be omitted in JS after ES2015.
  # https://developer.mozilla.org/ja/docs/Web/JavaScript/Reference/Operators/Object_initializer
  #
  # Original puppeteer implementation take it into consideration.
  # But we don't support the syntax here.

  result =
    begin
      client.send_message('Runtime.callFunctionOn',
        functionDeclaration: function_declaration,
        executionContextId: context_id,
        arguments: converted_args,
        returnByValue: @return_by_value,
        awaitPromise: true,
        userGesture: true,
      )
    rescue Puppeteer::Connection::ProtocolError => err
      raise @execution_context.send(:rewrite_evaluation_error, err)
    end # .catch(rewriteError);

  exception_details = result['exceptionDetails']
  if exception_details
    raise EvaluationError.new("Evaluation failed: #{exception_details}")
  end

  remote_object = Puppeteer::RemoteObject.new(result['result'])

  if @return_by_value
    remote_object.value
  else
    Puppeteer::JSHandle.create(
      context: @execution_context,
      remote_object: remote_object,
    )
  end
end