296 lines · 9.3 KB · Rust
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use std::io::{Cursor, Write};use std::sync::Arc; use crate::role::Role;use crate::{LanguageModelToolUse, LanguageModelToolUseId};use anyhow::Result;use base64::write::EncoderWriter;use gpui::{    App, AppContext as _, DevicePixels, Image, ImageFormat, ObjectFit, SharedString, Size, Task,    point, px, size,};use image::codecs::png::PngEncoder;use serde::{Deserialize, Serialize};use util::ResultExt;use zed_llm_client::CompletionMode; #[derive(Clone, PartialEq, Eq, Serialize, Deserialize, Hash)]pub struct LanguageModelImage {    /// A base64-encoded PNG image.    pub source: SharedString,    size: Size<DevicePixels>,} impl LanguageModelImage {    pub fn len(&self) -> usize {        self.source.len()    }     pub fn is_empty(&self) -> bool {        self.source.is_empty()    }} impl std::fmt::Debug for LanguageModelImage {    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {        f.debug_struct("LanguageModelImage")            .field("source", &format!("<{} bytes>", self.source.len()))            .field("size", &self.size)            .finish()    }} /// Anthropic wants uploaded images to be smaller than this in both dimensions.const ANTHROPIC_SIZE_LIMT: f32 = 1568.; impl LanguageModelImage {    pub fn empty() -> Self {        Self {            source: "".into(),            size: size(DevicePixels(0), DevicePixels(0)),        }    }     pub fn from_image(data: Arc<Image>, cx: &mut App) -> Task<Option<Self>> {        cx.background_spawn(async move {            let image_bytes = Cursor::new(data.bytes());            let dynamic_image = match data.format() {                ImageFormat::Png => image::codecs::png::PngDecoder::new(image_bytes)                    .and_then(image::DynamicImage::from_decoder),                ImageFormat::Jpeg => image::codecs::jpeg::JpegDecoder::new(image_bytes)                    .and_then(image::DynamicImage::from_decoder),                ImageFormat::Webp => image::codecs::webp::WebPDecoder::new(image_bytes)                    .and_then(image::DynamicImage::from_decoder),                ImageFormat::Gif => image::codecs::gif::GifDecoder::new(image_bytes)                    .and_then(image::DynamicImage::from_decoder),                _ => return None,            }            .log_err()?;             let width = dynamic_image.width();            let height = dynamic_image.height();            let image_size = size(DevicePixels(width as i32), DevicePixels(height as i32));             let base64_image = {                if image_size.width.0 > ANTHROPIC_SIZE_LIMT as i32                    || image_size.height.0 > ANTHROPIC_SIZE_LIMT as i32                {                    let new_bounds = ObjectFit::ScaleDown.get_bounds(                        gpui::Bounds {                            origin: point(px(0.0), px(0.0)),                            size: size(px(ANTHROPIC_SIZE_LIMT), px(ANTHROPIC_SIZE_LIMT)),                        },                        image_size,                    );                    let resized_image = dynamic_image.resize(                        new_bounds.size.width.0 as u32,                        new_bounds.size.height.0 as u32,                        image::imageops::FilterType::Triangle,                    );                     encode_as_base64(data, resized_image)                } else {                    encode_as_base64(data, dynamic_image)                }            }            .log_err()?;             // SAFETY: The base64 encoder should not produce non-UTF8.            let source = unsafe { String::from_utf8_unchecked(base64_image) };             Some(LanguageModelImage {                size: image_size,                source: source.into(),            })        })    }     pub fn estimate_tokens(&self) -> usize {        let width = self.size.width.0.unsigned_abs() as usize;        let height = self.size.height.0.unsigned_abs() as usize;         // From: https://docs.anthropic.com/en/docs/build-with-claude/vision#calculate-image-costs        // Note that are a lot of conditions on Anthropic's API, and OpenAI doesn't use this,        // so this method is more of a rough guess.        (width * height) / 750    }     pub fn to_base64_url(&self) -> String {        format!("data:image/png;base64,{}", self.source)    }} fn encode_as_base64(data: Arc<Image>, image: image::DynamicImage) -> Result<Vec<u8>> {    let mut base64_image = Vec::new();    {        let mut base64_encoder = EncoderWriter::new(            Cursor::new(&mut base64_image),            &base64::engine::general_purpose::STANDARD,        );        if data.format() == ImageFormat::Png {            base64_encoder.write_all(data.bytes())?;        } else {            let mut png = Vec::new();            image.write_with_encoder(PngEncoder::new(&mut png))?;             base64_encoder.write_all(png.as_slice())?;        }    }    Ok(base64_image)} #[derive(Debug, Clone, Serialize, Deserialize, Eq, PartialEq, Hash)]pub struct LanguageModelToolResult {    pub tool_use_id: LanguageModelToolUseId,    pub tool_name: Arc<str>,    pub is_error: bool,    pub content: LanguageModelToolResultContent,    pub output: Option<serde_json::Value>,} #[derive(Debug, Clone, Deserialize, Serialize, Eq, PartialEq, Hash)]#[serde(untagged)]pub enum LanguageModelToolResultContent {    Text(Arc<str>),    Image(LanguageModelImage),    WrappedText(WrappedTextContent),} #[derive(Debug, Clone, Deserialize, Serialize, Eq, PartialEq, Hash)]pub struct WrappedTextContent {    #[serde(rename = "type")]    pub content_type: String,    pub text: Arc<str>,} impl LanguageModelToolResultContent {    pub fn to_str(&self) -> Option<&str> {        match self {            Self::Text(text) | Self::WrappedText(WrappedTextContent { text, .. }) => Some(&text),            Self::Image(_) => None,        }    }     pub fn is_empty(&self) -> bool {        match self {            Self::Text(text) | Self::WrappedText(WrappedTextContent { text, .. }) => {                text.chars().all(|c| c.is_whitespace())            }            Self::Image(_) => false,        }    }} impl From<&str> for LanguageModelToolResultContent {    fn from(value: &str) -> Self {        Self::Text(Arc::from(value))    }} impl From<String> for LanguageModelToolResultContent {    fn from(value: String) -> Self {        Self::Text(Arc::from(value))    }} #[derive(Debug, Clone, Serialize, Deserialize, Eq, PartialEq, Hash)]pub enum MessageContent {    Text(String),    Thinking {        text: String,        signature: Option<String>,    },    RedactedThinking(Vec<u8>),    Image(LanguageModelImage),    ToolUse(LanguageModelToolUse),    ToolResult(LanguageModelToolResult),} impl MessageContent {    pub fn to_str(&self) -> Option<&str> {        match self {            MessageContent::Text(text) => Some(text.as_str()),            MessageContent::Thinking { text, .. } => Some(text.as_str()),            MessageContent::RedactedThinking(_) => None,            MessageContent::ToolResult(tool_result) => tool_result.content.to_str(),            MessageContent::ToolUse(_) | MessageContent::Image(_) => None,        }    }     pub fn is_empty(&self) -> bool {        match self {            MessageContent::Text(text) => text.chars().all(|c| c.is_whitespace()),            MessageContent::Thinking { text, .. } => text.chars().all(|c| c.is_whitespace()),            MessageContent::ToolResult(tool_result) => tool_result.content.is_empty(),            MessageContent::RedactedThinking(_)            | MessageContent::ToolUse(_)            | MessageContent::Image(_) => false,        }    }} impl From<String> for MessageContent {    fn from(value: String) -> Self {        MessageContent::Text(value)    }} impl From<&str> for MessageContent {    fn from(value: &str) -> Self {        MessageContent::Text(value.to_string())    }} #[derive(Clone, Serialize, Deserialize, Debug, PartialEq, Hash)]pub struct LanguageModelRequestMessage {    pub role: Role,    pub content: Vec<MessageContent>,    pub cache: bool,} impl LanguageModelRequestMessage {    pub fn string_contents(&self) -> String {        let mut buffer = String::new();        for string in self.content.iter().filter_map(|content| content.to_str()) {            buffer.push_str(string);        }         buffer    }     pub fn contents_empty(&self) -> bool {        self.content.iter().all(|content| content.is_empty())    }} #[derive(Debug, PartialEq, Hash, Clone, Serialize, Deserialize)]pub struct LanguageModelRequestTool {    pub name: String,    pub description: String,    pub input_schema: serde_json::Value,} #[derive(Debug, PartialEq, Hash, Clone, Serialize, Deserialize)]pub enum LanguageModelToolChoice {    Auto,    Any,    None,} #[derive(Clone, Debug, Default, Serialize, Deserialize, PartialEq)]pub struct LanguageModelRequest {    pub thread_id: Option<String>,    pub prompt_id: Option<String>,    pub mode: Option<CompletionMode>,    pub messages: Vec<LanguageModelRequestMessage>,    pub tools: Vec<LanguageModelRequestTool>,    pub tool_choice: Option<LanguageModelToolChoice>,    pub stop: Vec<String>,    pub temperature: Option<f32>,} #[derive(Serialize, Deserialize, Debug, Eq, PartialEq)]pub struct LanguageModelResponseMessage {    pub role: Option<Role>,    pub content: Option<String>,}