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// LSP protocol types used by the server (requests, responses, params, capabilities).
package lsp
import "encoding/json"
// Request represents a JSON-RPC 2.0 request message.
type Request struct {
JSONRPC string `json:"jsonrpc"`
ID json.RawMessage `json:"id,omitempty"`
Method string `json:"method"`
Params json.RawMessage `json:"params,omitempty"`
}
// Response represents a JSON-RPC 2.0 response message.
type Response struct {
JSONRPC string `json:"jsonrpc"`
ID json.RawMessage `json:"id,omitempty"`
Result any `json:"result,omitempty"`
Error *RespError `json:"error,omitempty"`
}
// RespError represents the error object in a JSON-RPC 2.0 response.
type RespError struct {
Code int `json:"code"`
Message string `json:"message"`
}
// InitializeResult is the response payload for the initialize request.
type InitializeResult struct {
Capabilities ServerCapabilities `json:"capabilities"`
ServerInfo *ServerInfo `json:"serverInfo,omitempty"`
}
// ServerInfo describes the LSP server's name and version.
type ServerInfo struct {
Name string `json:"name"`
Version string `json:"version,omitempty"`
}
// ServerCapabilities declares the features the server supports.
type ServerCapabilities struct {
TextDocumentSync any `json:"textDocumentSync,omitempty"`
CompletionProvider *CompletionOptions `json:"completionProvider,omitempty"`
// bool | CodeActionOptions
CodeActionProvider any `json:"codeActionProvider,omitempty"`
}
// CompletionOptions configures the server's completion provider capabilities.
type CompletionOptions struct {
ResolveProvider bool `json:"resolveProvider,omitempty"`
TriggerCharacters []string `json:"triggerCharacters,omitempty"`
}
// CompletionList contains a set of completion items returned by the server.
type CompletionList struct {
IsIncomplete bool `json:"isIncomplete"`
Items []CompletionItem `json:"items"`
}
// CompletionItem represents a single completion suggestion.
type CompletionItem struct {
Label string `json:"label"`
Kind int `json:"kind,omitempty"`
Detail string `json:"detail,omitempty"`
InsertText string `json:"insertText,omitempty"`
InsertTextFormat int `json:"insertTextFormat,omitempty"`
FilterText string `json:"filterText,omitempty"`
TextEdit *TextEdit `json:"textEdit,omitempty"`
AdditionalTextEdits []TextEdit `json:"additionalTextEdits,omitempty"`
SortText string `json:"sortText,omitempty"`
Documentation string `json:"documentation,omitempty"`
}
// CodeActionOptions configures the server's code action provider capabilities.
type CodeActionOptions struct {
ResolveProvider bool `json:"resolveProvider,omitempty"`
}
// TextDocumentItem represents the content of an opened text document.
type TextDocumentItem struct {
URI string `json:"uri"`
LanguageID string `json:"languageId,omitempty"`
Version int `json:"version,omitempty"`
Text string `json:"text"`
}
// VersionedTextDocumentIdentifier identifies a specific version of a text document.
type VersionedTextDocumentIdentifier struct {
URI string `json:"uri"`
Version int `json:"version,omitempty"`
}
// TextDocumentIdentifier identifies a text document by its URI.
type TextDocumentIdentifier struct {
URI string `json:"uri"`
}
// DidOpenTextDocumentParams is the parameter for textDocument/didOpen notifications.
type DidOpenTextDocumentParams struct {
TextDocument TextDocumentItem `json:"textDocument"`
}
// TextDocumentContentChangeEvent describes a change to a text document's content.
type TextDocumentContentChangeEvent struct {
Range any `json:"range,omitempty"`
RangeLength int `json:"rangeLength,omitempty"`
Text string `json:"text"`
}
// DidChangeTextDocumentParams is the parameter for textDocument/didChange notifications.
type DidChangeTextDocumentParams struct {
TextDocument VersionedTextDocumentIdentifier `json:"textDocument"`
ContentChanges []TextDocumentContentChangeEvent `json:"contentChanges"`
}
// DidCloseTextDocumentParams is the parameter for textDocument/didClose notifications.
type DidCloseTextDocumentParams struct {
TextDocument TextDocumentIdentifier `json:"textDocument"`
}
// Position represents a zero-based line and character offset in a document.
type Position struct {
Line int `json:"line"`
Character int `json:"character"`
}
// CompletionParams is the parameter for textDocument/completion requests.
type CompletionParams struct {
TextDocument TextDocumentIdentifier `json:"textDocument"`
Position Position `json:"position"`
Context any `json:"context,omitempty"`
}
// CodeActionParams is the parameter for textDocument/codeAction requests.
type CodeActionParams struct {
TextDocument TextDocumentIdentifier `json:"textDocument"`
Range Range `json:"range"`
Context json.RawMessage `json:"context,omitempty"`
}
// WorkspaceEdit represents changes to many resources managed in the workspace.
type WorkspaceEdit struct {
Changes map[string][]TextEdit `json:"changes,omitempty"`
DocumentChanges []any `json:"documentChanges,omitempty"`
}
// ApplyWorkspaceEditParams is the client request payload for workspace/applyEdit.
type ApplyWorkspaceEditParams struct {
Label string `json:"label,omitempty"`
Edit WorkspaceEdit `json:"edit"`
}
// CodeAction represents an action the server can perform on the user's behalf.
type CodeAction struct {
Title string `json:"title"`
Kind string `json:"kind,omitempty"`
Edit *WorkspaceEdit `json:"edit,omitempty"`
Data json.RawMessage `json:"data,omitempty"`
Command *Command `json:"command,omitempty"`
}
// TextDocumentEdit describes edits to a single versioned text document.
type TextDocumentEdit struct {
TextDocument VersionedTextDocumentIdentifier `json:"textDocument"`
Edits []TextEdit `json:"edits"`
}
// CreateFile is a workspace edit operation that creates a new file.
type CreateFile struct {
Kind string `json:"kind"`
URI string `json:"uri"`
}
// Command represents an LSP command that can be executed by the client.
type Command struct {
Title string `json:"title"`
Command string `json:"command"`
Arguments []any `json:"arguments,omitempty"`
}
// ExecuteCommandParams is the parameter for workspace/executeCommand requests.
type ExecuteCommandParams struct {
Command string `json:"command"`
Arguments []any `json:"arguments,omitempty"`
}
// Diagnostic represents a compiler diagnostic such as an error or warning.
type Diagnostic struct {
Range Range `json:"range"`
Message string `json:"message"`
Severity int `json:"severity,omitempty"`
Code any `json:"code,omitempty"`
Source string `json:"source,omitempty"`
}
// CodeActionContext carries diagnostics associated with a code action request.
type CodeActionContext struct {
Diagnostics []Diagnostic `json:"diagnostics"`
}
// Range defines a text range in a document.
type Range struct {
Start Position `json:"start"`
End Position `json:"end"`
}
// TextEdit represents a textual edit applicable to a document.
type TextEdit struct {
Range Range `json:"range"`
NewText string `json:"newText"`
}
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