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completions.ts
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completions.ts
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import { Service } from "../models/lsp"
import { Event, DiagnosticSeverity } from "../models/lsp.types"
import { debounce, log, getContent } from "../utils"
import assistant from "../models/assistant"
import config from "../config"
export const completions = (lsp: Service) => {
lsp.on(Event.Completion, async ({ ctx, request }) => {
const buffer = ctx.buffers[request.params.textDocument.uri]
const lastContentVersion = buffer.version
const { lastCharacter } = await getContent(buffer.text, request.params.position.line, request.params.position.character)
if (lastCharacter == ".") {
return ctx.send({
id: request.id,
result: {
isIncomplete: false,
items: []
}
})
}
debounce("completion", async () => {
try {
await completion({ ctx, request, lastContentVersion })
} catch (e) {
log("error in completion event", e.message)
ctx.sendDiagnostics([
{
message: e.message,
severity: DiagnosticSeverity.Error,
range: {
start: { line: request.params.position.line, character: 0 },
end: { line: request.params.position.line + 1, character: 0 }
}
}
], 10000)
}
}, parseInt(config.debounce))
})
const completion = async ({ ctx, request, lastContentVersion }) => {
const skip = () => {
ctx.resetDiagnostics()
ctx.send({
id: request.id,
result: {
isIncomplete: false,
items: []
}
})
}
const buffer = ctx.buffers[request.params.textDocument.uri]
log("running completion on buffer", JSON.stringify(buffer))
if (buffer.version > lastContentVersion) {
log("skipping because content is stale")
return skip()
}
const { lastLine, contentBefore, contentAfter } = await getContent(buffer.text, request.params.position.line, request.params.position.character)
log("calling completion event")
ctx.sendDiagnostics([
{
message: "Fetching completion...",
severity: DiagnosticSeverity.Information,
range: {
start: { line: request.params.position.line, character: 0 },
end: { line: request.params.position.line + 1, character: 0 }
}
}
], 10000)
try {
var hints = await assistant.completion({ contentBefore, contentAfter }, ctx.currentUri, buffer?.languageId)
} catch (e) {
return ctx.sendDiagnostics([
{
message: e.message,
severity: DiagnosticSeverity.Error,
range: {
start: { line: request.params.position.line, character: 0 },
end: { line: request.params.position.line + 1, character: 0 }
}
}
], 10000)
}
log("completion hints:", hints)
const items = hints?.map((i) => {
if (i.startsWith(lastLine.trim())) {
i = i.slice(lastLine.trim().length)
}
const lines = i.split('\n')
const cleanLine = request.params.position.line + lines.length - 1
let cleanCharacter = lines.slice(-1)[0].length
if (cleanLine == request.params.position.line) {
cleanCharacter += request.params.position.character
}
return {
label: i.split('\n')[0],
kind: 1,
preselect: true,
detail: i,
insertText: i,
insertTextFormat: 1,
additionalTextEdits: [
{
newText: "",
range: {
start: { line: cleanLine, character: cleanCharacter },
end: { line: cleanLine, character: 200 }
}
}
]
}
})
ctx.send({
id: request.id,
result: {
isIncomplete: false,
items
}
})
ctx.resetDiagnostics()
}
}