86 lines
2.0 KiB
Go
86 lines
2.0 KiB
Go
// Package cmdutil provides shared boilerplate for LSP tool command binaries.
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package cmdutil
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import (
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"encoding/json"
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"fmt"
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"os"
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"path/filepath"
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"strconv"
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"ollie/tools/lsp"
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)
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// PositionArgs are the common args for position-based LSP commands.
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type PositionArgs struct {
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Path string `json:"path"`
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Line string `json:"line"`
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Col string `json:"col"`
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}
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// ResolvePosition converts the string fields to absolute path and 0-indexed ints.
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func (a PositionArgs) ResolvePosition() (file string, line, col int) {
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file, _ = filepath.Abs(a.Path)
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l, _ := strconv.Atoi(a.Line)
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c, _ := strconv.Atoi(a.Col)
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return file, l - 1, c - 1
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}
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// Run is the common entry point for position-based LSP commands.
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// It handles --bridge, reads PositionArgs from stdin, dispatches the request,
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// and passes the result to format. If format is nil, raw JSON is printed.
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func Run(method string, format func(json.RawMessage)) {
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if len(os.Args) > 1 && os.Args[1] == "--bridge" {
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if err := lsp.RunBridge(); err != nil {
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fmt.Fprintf(os.Stderr, "bridge: %v\n", err)
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os.Exit(1)
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}
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return
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}
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var args PositionArgs
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if err := json.NewDecoder(os.Stdin).Decode(&args); err != nil {
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fmt.Fprintf(os.Stderr, "error: %v\n", err)
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os.Exit(1)
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}
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file, line, col := args.ResolvePosition()
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result, err := lsp.ClientRequest(&lsp.BridgeRequest{
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Method: method,
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File: file,
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Line: line,
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Col: col,
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})
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if err != nil {
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fmt.Fprintf(os.Stderr, "error: %v\n", err)
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os.Exit(1)
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}
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if result == nil || string(result) == "null" {
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fmt.Printf("(no %s found)\n", method)
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return
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}
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if format != nil {
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format(result)
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} else {
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os.Stdout.Write(result)
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fmt.Println()
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}
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}
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// RunCustom handles --bridge and then calls fn for custom argument handling.
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// Use for commands that don't follow the simple position-args pattern
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// (e.g. diagnostics, rename, symbols).
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func RunCustom(fn func()) {
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if len(os.Args) > 1 && os.Args[1] == "--bridge" {
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if err := lsp.RunBridge(); err != nil {
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fmt.Fprintf(os.Stderr, "bridge: %v\n", err)
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os.Exit(1)
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}
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return
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}
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fn()
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}
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