wppaste
WordPress

PromptBuilder::appendPartToMessages( WordPress\AiClient\Messages\DTO\MessagePart $part ): void

Since
0.1.0
Source
wp-includes/php-ai-client/src/Builders/PromptBuilder.php:1124
Appends a MessagePart to the messages array.

Description

If the last message has a user role, the part is added to it.
Otherwise, a new UserMessage is created with the part.

Compatibility

WordPress
since 0.1.0
PHP
7.4–8.6-dev
  • 6.7.7
  • 6.8.8
  • 6.9.7
  • 7.0.4
  • 7.1.0

Present in 2 of the 5 tracked releases, added in 0.1.0, and compiles on PHP 7.4 through 8.6-dev.

Parameters

$partWordPress\AiClient\Messages\DTO\MessagePart
The part to append.

Return value

void

Performance profile

How much work a call to PromptBuilder::appendPartToMessages() does, and what it touches: the algorithmic scaling, the Zend instruction count per call across PHP versions, the hooks it hands control to, and the core code that calls it. Measured from the compiled opcodes, not a stopwatch, so every number is identical on any machine running the same PHP version, and every function in core is ranked by cost.

Cost class
Trivial

Touches nothing outside its own arguments.

Scaling
Constant

No loop in the body: the same number of instructions runs whatever you pass in.

Instructions
16–24

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 32.

Plugin surface
None

Nothing here hands control to plugin code.

Called by
0

Nothing in core calls this; the cost is only what you spend yourself.

What one call costs · 3 distinct outcomes

One number would be a lie: the work depends on which branch runs. These are every distinct cost PromptBuilder::appendPartToMessages() can have, taken from its control-flow graph on PHP 8.5.

WhenInstructionsCalls it makes
!($lastMessage instanceof)16end()
$lastMessage instanceof && !->isUser()21end(), ->getRole(), ->isUser()
$lastMessage instanceof && ->isUser()24end(), ->getRole(), ->isUser(), array_pop(), ->withPart()

Across PHP versions

Compiles the same on PHP 7.4, 8.1, 8.2, 8.3, 8.4, 8.5 and 8.6-dev: 32 instructions, 16–24 executed per call, 2 branches. The work does not change between versions.

An instruction is not a fixed amount of time, so a matching count is not necessarily the same speed; what it rules out is a difference in the work itself.

Uses · 1

  • \WordPress\AiClient\Messages\DTO\UserMessage::__construct()

Source code

    protected function appendPartToMessages(MessagePart $part): void    {        $lastMessage = end($this->messages);        if ($lastMessage instanceof Message && $lastMessage->getRole()->isUser()) {            // Replace the last message with a new one containing the appended part            array_pop($this->messages);            $this->messages[] = $lastMessage->withPart($part);            return;        }        // Create new UserMessage with the part        $this->messages[] = new UserMessage([$part]);    }

Changelog

Introduced in 0.1.0. Unchanged from 7.0.4 through 7.1.0.

  1. 7.0.4
  2. 7.1.0

Signature, return type and hooks compared across 2 parsed releases.

About this page

Parsed data
Generated from the wordpress-develop 7.1.0 tag, from src/wp-includes/php-ai-client/src/Builders/PromptBuilder.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.
Corrections
Something wrong on this page? Report it and it gets fixed in the next regeneration.