LSP-server-example

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package handlers
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import (
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	"encoding/json"
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	"log/slog"
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	"lsp-server/internal/protocol"
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)
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const CompletionRequestMethod = "textDocument/completion"
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type Completion struct {
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	fileURIToContents *map[string][]string
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}
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func NewCompletion(fileURIToContents *map[string][]string) *Completion {
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	return &Completion{fileURIToContents: fileURIToContents}
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}
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func (c Completion) Call(params json.RawMessage) (any, error) {
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	slog.Info("received completion method")
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	completionParams, err := c.parseParams(params)
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	if err != nil {
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		slog.Error("Error to parse completion params")
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		return nil, err
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	}
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	slog.Debug("completion params", slog.Any("params", *completionParams))
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	suggestions := []protocol.CompletionItem{
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		{
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			Label: "some completion",
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			Kind:  protocol.ValueCompletion,
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		},
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	}
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	return suggestions, err
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}
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func (c Completion) parseParams(params json.RawMessage) (*protocol.CompletionParams, error) {
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	var completionParams protocol.CompletionParams
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	if err := json.Unmarshal(params, &completionParams); err != nil {
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		return nil, err
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	}
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	return &completionParams, nil
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}
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