Struct PromptMessage

pub struct PromptMessage {
    pub content: Mutex<Vec<String>>,
    pub built_prompt_message: Mutex<Option<String>>,
    pub message_type: PromptMessageType,
    pub concatenator: TextConcatenator,
}

An individual message within a prompt sequence.

Represents a single message with its content, type, and concatenation rules. Maintains thread-safe interior mutability for content manipulation and provides methods for building and accessing the message content.

Fields

content: Mutex<Vec<String>>

built_prompt_message: Mutex<Option<String>>

message_type: PromptMessageType

concatenator: TextConcatenator

Implementations

impl PromptMessage

pub fn new( message_type: PromptMessageType, concatenator: &TextConcatenator, ) -> PromptMessage

pub fn set_content<T>(&self, content: T) -> &PromptMessage

where T: AsRef<str>,

Sets the primary content of the message, replacing any existing content.

If the provided content is empty, the message remains unchanged. Otherwise, replaces all existing content with the new content and rebuilds the message.

Arguments

• content - The new content to set for the message

Returns

A reference to self for method chaining

pub fn prepend_content<T>(&self, content: T) -> &PromptMessage

where T: AsRef<str>,

Adds content to the beginning of the message.

If the provided content is empty, the message remains unchanged. Otherwise, inserts the new content at the start of the existing content and rebuilds the message.

Arguments

• content - The content to prepend to the message

Returns

A reference to self for method chaining

pub fn append_content<T>(&self, content: T) -> &PromptMessage

where T: AsRef<str>,

Adds content to the end of the message.

If the provided content is empty, the message remains unchanged. Otherwise, adds the new content after existing content and rebuilds the message.

Arguments

• content - The content to append to the message

Returns

A reference to self for method chaining

pub fn get_built_prompt_message(&self) -> Result<String, Error>

Retrieves the built message content.

Returns the complete message content with all parts properly concatenated according to the message’s concatenation rules.

Returns

Returns Ok(String) containing the built message content.

Errors

Returns an error if the message has not been built yet.

Trait Implementations

impl Clone for PromptMessage

fn clone(&self) -> PromptMessage

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for PromptMessage

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for PromptMessage

fn deserialize<__D>( __deserializer: __D, ) -> Result<PromptMessage, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for PromptMessage

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Serialize for PromptMessage

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.