lsp

package
v1.56.0 Latest Latest
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 Go to latest Published: May 7, 2026 License: Apache-2.0 Imports: 20 Imported by: 0

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Constants

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const (
	ToolNameLSPWorkspace        = "lsp_workspace"
	ToolNameLSPHover            = "lsp_hover"
	ToolNameLSPDefinition       = "lsp_definition"
	ToolNameLSPReferences       = "lsp_references"
	ToolNameLSPDocumentSymbols  = "lsp_document_symbols"
	ToolNameLSPWorkspaceSymbols = "lsp_workspace_symbols"
	ToolNameLSPDiagnostics      = "lsp_diagnostics"
	ToolNameLSPRename           = "lsp_rename"
	ToolNameLSPCodeActions      = "lsp_code_actions"
	ToolNameLSPFormat           = "lsp_format"
	ToolNameLSPCallHierarchy    = "lsp_call_hierarchy"
	ToolNameLSPTypeHierarchy    = "lsp_type_hierarchy"
	ToolNameLSPImplementations  = "lsp_implementations"
	ToolNameLSPSignatureHelp    = "lsp_signature_help"
	ToolNameLSPInlayHints       = "lsp_inlay_hints"
)

Variables

This section is empty.

Functions

This section is empty.

Types

type Backend 

type Backend struct {
	LSP     *Tool
	Toolset tools.ToolSet
}

Backend pairs a raw Tool (used for file-type routing) with an optionally-wrapped ToolSet (used for tool enumeration, so that per-toolset config like tool filters, instructions, or toon wrappers are respected).

type CallHierarchyArgs 

type CallHierarchyArgs struct {
	PositionArgs

	Direction string `json:"direction" jsonschema:"Direction: 'incoming' (who calls this) or 'outgoing' (what this calls)"`
}

CallHierarchyArgs for getting call hierarchy.

type CodeActionsArgs 

type CodeActionsArgs struct {
	File      string `json:"file" jsonschema:"Absolute path to the source file"`
	StartLine int    `json:"start_line" jsonschema:"Start line of the range (1-based)"`
	EndLine   int    `json:"end_line,omitempty" jsonschema:"End line of the range (1-based, defaults to start_line)"`
}

CodeActionsArgs for getting available code actions.

type FileArgs 

type FileArgs struct {
	File string `json:"file" jsonschema:"Absolute path to the source file"`
}

FileArgs is for tools that only need a file path.

type InlayHintsArgs 

type InlayHintsArgs struct {
	File      string `json:"file" jsonschema:"Absolute path to the source file"`
	StartLine int    `json:"start_line,omitempty" jsonschema:"Start line of range (1-based, default: 1)"`
	EndLine   int    `json:"end_line,omitempty" jsonschema:"End line of range (1-based, default: end of file)"`
}

InlayHintsArgs for getting inlay hints.

type Multiplexer 

type Multiplexer struct {
	// contains filtered or unexported fields
}

Multiplexer combines multiple LSP backends into a single toolset. It presents one set of lsp_* tools and routes each call to the appropriate backend based on the file extension in the tool arguments.

func NewLSPMultiplexer 

func NewLSPMultiplexer(backends []Backend) *Multiplexer

NewLSPMultiplexer creates a multiplexer that routes LSP tool calls to the appropriate backend based on file type.

func (*Multiplexer) Instructions 

func (m *Multiplexer) Instructions() string

func (*Multiplexer) Kind 

func (m *Multiplexer) Kind() string

Kind returns the user-facing classification of this toolset.

func (*Multiplexer) Name 

func (m *Multiplexer) Name() string

Name returns a comma-separated list of backend command basenames (e.g. "gopls,rust-analyzer"). The multiplexer wraps multiple LSP toolsets behind a single ToolSet entry, so the /tools dialog needs one label that covers them all instead of one row per backend.

func (*Multiplexer) Start 

func (m *Multiplexer) Start(ctx context.Context) error

func (*Multiplexer) Stop 

func (m *Multiplexer) Stop(ctx context.Context) error

func (*Multiplexer) Tools 

func (m *Multiplexer) Tools(ctx context.Context) ([]tools.Tool, error)

type PositionArgs 

type PositionArgs struct {
	File      string `json:"file" jsonschema:"Absolute path to the source file"`
	Line      int    `json:"line" jsonschema:"Line number (1-based)"`
	Character int    `json:"character" jsonschema:"Character position on the line (1-based)"`
}

PositionArgs is the base for all position-based tool arguments.

type ReferencesArgs 

type ReferencesArgs struct {
	PositionArgs

	IncludeDeclaration *bool `json:"include_declaration,omitempty" jsonschema:"Include the declaration in results (default: true)"`
}

ReferencesArgs extends PositionArgs with an include_declaration option.

type RenameArgs 

type RenameArgs struct {
	PositionArgs

	NewName string `json:"new_name" jsonschema:"The new name for the symbol"`
}

RenameArgs extends PositionArgs with the new name.

type Tool 

type Tool struct {
	// contains filtered or unexported fields
}

Tool implements tools.ToolSet for connecting to any LSP server. It provides stateless code intelligence tools that automatically manage the LSP server lifecycle and document state.

func NewLSPTool 

func NewLSPTool(command string, args, env []string, workingDir string, policy ...lifecycle.Policy) *Tool

NewLSPTool creates a new LSP tool that connects to an LSP server.

The optional policy lets callers tune restart/backoff behaviour. When the zero value is passed the supervisor uses its built-in defaults (RestartOnFailure, 5 attempts, 1s..32s backoff). Internal callbacks (OnDisconnect, Logger) are always set by the constructor.

func (*Tool) HandlesFile 

func (t *Tool) HandlesFile(path string) bool

HandlesFile checks if this LSP handles the given file based on its extension.

func (*Tool) Instructions 

func (t *Tool) Instructions() string

func (*Tool) Kind 

func (t *Tool) Kind() string

Kind returns the user-facing classification of this toolset. Used by status surfaces such as the /tools dialog so they can label the toolset without leaking Go type names.

func (*Tool) Name 

func (t *Tool) Name() string

Name returns the basename of the configured command ("gopls", "rust-analyzer", …). It's the most useful identifier in the absence of a YAML name: field on LSP toolsets, and lets the /tools dialog distinguish multiple language servers in the same agent.

func (*Tool) Restart 

func (t *Tool) Restart(ctx context.Context) error

Restart brings the LSP server back up regardless of state. Failed or Stopped supervisors are recovered via Start; otherwise the current session is dropped and we wait for the supervisor to reconnect. Blocks up to 35s (matching the MCP toolset).

func (*Tool) SetFileTypes 

func (t *Tool) SetFileTypes(fileTypes []string)

SetFileTypes sets the file types (extensions) that this LSP server handles.

func (*Tool) SetToolsChangedHandler 

func (t *Tool) SetToolsChangedHandler(handler func())

SetToolsChangedHandler registers a callback that is invoked after the supervisor reaches Ready and the server's capability matrix becomes available. The runtime uses this to re-query Tools() and pick up the capability-filtered list.

func (*Tool) Start 

func (t *Tool) Start(ctx context.Context) error

func (*Tool) State 

func (t *Tool) State() lifecycle.StateInfo

State returns a snapshot of the underlying supervisor's lifecycle state, suitable for the /tools dialog and lifecycle log messages.

func (*Tool) Stop 

func (t *Tool) Stop(ctx context.Context) error

func (*Tool) Tools 

func (t *Tool) Tools(context.Context) ([]tools.Tool, error)

func (*Tool) WorkingDir 

func (t *Tool) WorkingDir() string

WorkingDir returns the working directory of the LSP server process. This is intended for testing only.

type TypeHierarchyArgs 

type TypeHierarchyArgs struct {
	PositionArgs

	Direction string `json:"direction" jsonschema:"Direction: 'supertypes' (parent types) or 'subtypes' (child types)"`
}

TypeHierarchyArgs for getting type hierarchy.

type WorkspaceArgs 

type WorkspaceArgs struct{}

WorkspaceArgs is empty - the workspace tool takes no arguments.

type WorkspaceSymbolsArgs 

type WorkspaceSymbolsArgs struct {
	Query string `json:"query" jsonschema:"Search query to filter symbols (supports fuzzy matching)"`
}

WorkspaceSymbolsArgs for searching symbols across the workspace.

Source Files

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