mirror of
https://github.com/lukaszraczylo/filepuff-mcp.git
synced 2026-06-10 22:59:01 +00:00
feat(parser): add Elixir language support
- [x] Add Elixir documentation extraction (@doc and @moduledoc attributes) - [x] Add Elixir symbol extraction (modules, functions, macros, structs, protocols) - [x] Add tree-sitter Elixir language parser integration - [x] Add Elixir language detection for .ex and .exs file extensions - [x] Add Elixir symbol extraction tests - [x] Update language support table in README - [x] Improve install script with package manager detection and LSP installation - [x] Fix shell script portability (replace echo -e with printf) - [x] Fix checksum verification in install script for macOS/Linux compatibility
This commit is contained in:
@@ -46,6 +46,8 @@ func ExtractDocComment(n *sitter.Node, content []byte, lang protocol.Language) *
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return extractPythonDocComment(n, content)
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case protocol.LangC, protocol.LangCpp:
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return extractCDocComment(n, content)
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case protocol.LangElixir:
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return extractElixirDocComment(n, content)
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default:
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return nil
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}
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@@ -548,3 +550,109 @@ func cleanPythonDocstring(doc string) string {
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return strings.TrimSpace(doc)
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}
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// extractElixirDocComment extracts Elixir documentation from @doc and @moduledoc attributes.
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// Elixir uses module attributes like @doc and @moduledoc for documentation.
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func extractElixirDocComment(n *sitter.Node, content []byte) *DocComment {
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// Look for @doc or @moduledoc attribute preceding this node
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prev := n.PrevSibling()
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for prev != nil {
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// Check if this is an unary_operator with @ (module attribute)
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if prev.Type() == "unary_operator" {
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text := GetNodeText(prev, content)
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trimmed := strings.TrimSpace(text)
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// Check for @doc or @moduledoc
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if strings.HasPrefix(trimmed, "@doc") || strings.HasPrefix(trimmed, "@moduledoc") {
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// Extract the documentation string
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docText := extractElixirDocString(prev, content)
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if docText != "" {
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return &DocComment{
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Text: docText,
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Raw: text,
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Style: CommentStyleDocstring,
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Tags: nil,
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StartLine: int(prev.StartPoint().Row) + 1,
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EndLine: int(prev.EndPoint().Row) + 1,
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}
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}
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}
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}
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// Also check for regular # comments
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if prev.Type() == "comment" {
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comments := collectPrecedingComments(n, content, []string{"comment"})
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if len(comments) > 0 {
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var parts []string
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var raw []string
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startLine := -1
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endLine := -1
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for _, c := range comments {
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text := GetNodeText(c, content)
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raw = append(raw, text)
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if startLine == -1 {
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startLine = int(c.StartPoint().Row) + 1
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}
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endLine = int(c.EndPoint().Row) + 1
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// Clean # comment
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cleaned := strings.TrimSpace(strings.TrimPrefix(strings.TrimSpace(text), "#"))
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if cleaned != "" {
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parts = append(parts, cleaned)
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}
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}
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if len(parts) > 0 {
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return &DocComment{
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Text: strings.Join(parts, "\n"),
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Raw: strings.Join(raw, "\n"),
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Style: CommentStyleHash,
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Tags: nil,
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StartLine: startLine,
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EndLine: endLine,
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}
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}
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}
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break
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}
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prev = prev.PrevSibling()
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}
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return nil
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}
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// extractElixirDocString extracts the documentation string from an Elixir @doc/@moduledoc attribute.
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func extractElixirDocString(n *sitter.Node, content []byte) string {
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// The doc attribute typically looks like:
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// @doc """
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// Documentation here
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// """
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// or
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// @doc "Single line doc"
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text := GetNodeText(n, content)
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// Find the string content after @doc or @moduledoc
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var docContent string
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// Check for heredoc style (triple quotes)
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if idx := strings.Index(text, `"""`); idx != -1 {
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// Find the closing triple quotes
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rest := text[idx+3:]
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if endIdx := strings.Index(rest, `"""`); endIdx != -1 {
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docContent = rest[:endIdx]
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}
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} else if idx := strings.Index(text, `"`); idx != -1 {
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// Single quoted string
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rest := text[idx+1:]
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if endIdx := strings.Index(rest, `"`); endIdx != -1 {
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docContent = rest[:endIdx]
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}
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}
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return strings.TrimSpace(docContent)
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}
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@@ -11,6 +11,7 @@ import (
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sitter "github.com/smacker/go-tree-sitter"
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"github.com/smacker/go-tree-sitter/c"
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"github.com/smacker/go-tree-sitter/cpp"
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"github.com/smacker/go-tree-sitter/elixir"
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"github.com/smacker/go-tree-sitter/golang"
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"github.com/smacker/go-tree-sitter/html"
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"github.com/smacker/go-tree-sitter/javascript"
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@@ -88,10 +89,12 @@ func getLanguage(lang protocol.Language) (*sitter.Language, error) {
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case protocol.LangVue:
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// Vue SFC files use HTML-like template syntax, so we use the HTML parser
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return html.GetLanguage(), nil
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case protocol.LangElixir:
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return elixir.GetLanguage(), nil
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default:
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return nil, errors.New(errors.ErrInvalidLanguage, fmt.Sprintf("language %s is not supported", lang)).
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WithContext("language", string(lang)).
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WithRemediation("Supported languages: Go, TypeScript, JavaScript, Python, C, C++, HTML, Vue")
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WithRemediation("Supported languages: Go, TypeScript, JavaScript, Python, C, C++, HTML, Vue, Elixir")
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}
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}
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@@ -25,6 +25,8 @@ func ExtractSymbols(tree *sitter.Tree, content []byte, lang protocol.Language, f
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return extractPythonSymbols(root, content, filename)
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case protocol.LangC, protocol.LangCpp:
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return extractCSymbols(root, content, filename)
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case protocol.LangElixir:
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return extractElixirSymbols(root, content, filename)
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default:
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return nil
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}
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@@ -472,3 +474,278 @@ func hasFunctionDeclarator(n *sitter.Node) bool {
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})
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return found
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}
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// extractElixirSymbols extracts symbols from Elixir code.
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// Elixir uses `defmodule` for modules, `def`/`defp` for functions, and `defmacro`/`defmacrop` for macros.
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func extractElixirSymbols(root *sitter.Node, content []byte, filename string) []protocol.Symbol {
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var symbols []protocol.Symbol
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WalkTree(root, func(n *sitter.Node) bool {
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var symbol *protocol.Symbol
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switch n.Type() {
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case "call":
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symbol = extractElixirCall(n, content, filename)
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}
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if symbol != nil {
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if doc := ExtractDocComment(n, content, protocol.LangElixir); doc != nil {
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symbol.Doc = FormatDocComment(doc)
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}
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symbols = append(symbols, *symbol)
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}
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return true
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})
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return symbols
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}
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// extractElixirCall extracts symbols from Elixir call nodes (def, defp, defmodule, defmacro, etc.).
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func extractElixirCall(n *sitter.Node, content []byte, filename string) *protocol.Symbol {
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// Get the function being called (first child is usually the target)
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if n.NamedChildCount() < 1 {
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return nil
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}
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target := n.NamedChild(0)
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if target == nil {
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return nil
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}
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targetText := GetNodeText(target, content)
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switch targetText {
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case "defmodule":
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return extractElixirModule(n, content, filename)
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case "def", "defp":
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return extractElixirFunction(n, content, filename, targetText == "defp")
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case "defmacro", "defmacrop":
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return extractElixirMacro(n, content, filename)
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case "defstruct":
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return extractElixirStruct(n, content, filename)
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case "defprotocol":
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return extractElixirProtocol(n, content, filename)
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case "defimpl":
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return extractElixirImpl(n, content, filename)
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}
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return nil
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}
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// extractElixirModule extracts a module definition.
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func extractElixirModule(n *sitter.Node, content []byte, filename string) *protocol.Symbol {
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// defmodule ModuleName do ... end
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// The module name is in the arguments
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args := n.ChildByFieldName("arguments")
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if args == nil {
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// Try finding it as the second named child
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if n.NamedChildCount() >= 2 {
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args = n.NamedChild(1)
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}
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}
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if args == nil {
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return nil
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}
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// Find the alias (module name) in the arguments
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var moduleName string
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WalkTree(args, func(node *sitter.Node) bool {
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if node.Type() == "alias" {
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moduleName = GetNodeText(node, content)
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return false
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}
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return true
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})
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if moduleName == "" {
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return nil
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}
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return &protocol.Symbol{
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Name: moduleName,
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Kind: protocol.SymbolModule,
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Location: NodeLocation(n, filename),
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}
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}
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// extractElixirFunction extracts a function definition.
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func extractElixirFunction(n *sitter.Node, content []byte, filename string, isPrivate bool) *protocol.Symbol {
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// def function_name(args) do ... end
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// The function name and args are in the arguments of the call
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if n.NamedChildCount() < 2 {
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return nil
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}
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// Second child contains the function definition
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funcDef := n.NamedChild(1)
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if funcDef == nil {
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return nil
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}
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var funcName string
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// The function definition can be:
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// 1. A call node (function with args): func_name(arg1, arg2)
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// 2. An identifier (function without args): func_name
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switch funcDef.Type() {
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case "call":
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// Get the function name from the call target
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if funcDef.NamedChildCount() >= 1 {
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nameNode := funcDef.NamedChild(0)
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if nameNode != nil {
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funcName = GetNodeText(nameNode, content)
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}
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}
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case "identifier":
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funcName = GetNodeText(funcDef, content)
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case "binary_operator":
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// Guard clause: def func_name(args) when guard do ... end
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// The left side contains the actual function call
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WalkTree(funcDef, func(node *sitter.Node) bool {
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if node.Type() == "call" && node.NamedChildCount() >= 1 {
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nameNode := node.NamedChild(0)
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if nameNode != nil && nameNode.Type() == "identifier" {
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funcName = GetNodeText(nameNode, content)
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return false
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}
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}
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if node.Type() == "identifier" && funcName == "" {
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funcName = GetNodeText(node, content)
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return false
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}
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return true
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})
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}
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if funcName == "" {
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return nil
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}
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kind := protocol.SymbolFunction
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if isPrivate {
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funcName = funcName + " (private)"
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}
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return &protocol.Symbol{
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Name: funcName,
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Kind: kind,
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Location: NodeLocation(n, filename),
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}
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}
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// extractElixirMacro extracts a macro definition.
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func extractElixirMacro(n *sitter.Node, content []byte, filename string) *protocol.Symbol {
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// Similar to function extraction
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if n.NamedChildCount() < 2 {
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return nil
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}
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funcDef := n.NamedChild(1)
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if funcDef == nil {
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return nil
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}
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var macroName string
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switch funcDef.Type() {
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case "call":
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if funcDef.NamedChildCount() >= 1 {
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nameNode := funcDef.NamedChild(0)
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if nameNode != nil {
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macroName = GetNodeText(nameNode, content)
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}
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}
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case "identifier":
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macroName = GetNodeText(funcDef, content)
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}
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if macroName == "" {
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return nil
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}
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return &protocol.Symbol{
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Name: macroName + " (macro)",
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Kind: protocol.SymbolFunction,
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Location: NodeLocation(n, filename),
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}
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}
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// extractElixirStruct extracts a struct definition.
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func extractElixirStruct(n *sitter.Node, content []byte, filename string) *protocol.Symbol {
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// defstruct is typically inside a module, the struct name is the module name
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// We just mark this as a struct symbol
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return &protocol.Symbol{
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Name: "defstruct",
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Kind: protocol.SymbolStruct,
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Location: NodeLocation(n, filename),
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}
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}
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// extractElixirProtocol extracts a protocol definition.
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func extractElixirProtocol(n *sitter.Node, content []byte, filename string) *protocol.Symbol {
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// defprotocol ProtocolName do ... end
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if n.NamedChildCount() < 2 {
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return nil
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}
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args := n.NamedChild(1)
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if args == nil {
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return nil
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}
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var protocolName string
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WalkTree(args, func(node *sitter.Node) bool {
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if node.Type() == "alias" {
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protocolName = GetNodeText(node, content)
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return false
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}
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return true
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})
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if protocolName == "" {
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return nil
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}
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return &protocol.Symbol{
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Name: protocolName,
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Kind: protocol.SymbolInterface,
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Location: NodeLocation(n, filename),
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}
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}
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// extractElixirImpl extracts a protocol implementation.
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func extractElixirImpl(n *sitter.Node, content []byte, filename string) *protocol.Symbol {
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// defimpl Protocol, for: Type do ... end
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if n.NamedChildCount() < 2 {
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return nil
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}
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args := n.NamedChild(1)
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if args == nil {
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return nil
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}
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var implName string
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WalkTree(args, func(node *sitter.Node) bool {
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if node.Type() == "alias" {
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if implName == "" {
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implName = GetNodeText(node, content)
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} else {
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implName = implName + " for " + GetNodeText(node, content)
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return false
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}
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}
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return true
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})
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if implName == "" {
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return nil
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}
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return &protocol.Symbol{
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Name: implName,
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Kind: protocol.SymbolClass,
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Location: NodeLocation(n, filename),
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}
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}
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@@ -224,3 +224,96 @@ int main() {
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}
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}
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}
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func TestExtractElixirSymbols(t *testing.T) {
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r := NewRegistry()
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defer r.Close()
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content := `defmodule MyApp.User do
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@moduledoc """
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User module for the application.
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"""
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|
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defstruct [:name, :email]
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|
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@doc """
|
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Creates a new user.
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"""
|
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def new(name, email) do
|
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%__MODULE__{name: name, email: email}
|
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end
|
||||
|
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defp validate(user) do
|
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# Private validation function
|
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user
|
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end
|
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|
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defmacro is_user(term) do
|
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quote do
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is_struct(unquote(term), __MODULE__)
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end
|
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end
|
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end
|
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|
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defprotocol Greeting do
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@doc "Greet the entity"
|
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def greet(entity)
|
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end
|
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|
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defimpl Greeting, for: MyApp.User do
|
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def greet(user) do
|
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"Hello, #{user.name}!"
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end
|
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end
|
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`
|
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|
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ctx := context.Background()
|
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result, err := r.Parse(ctx, "test.ex", []byte(content))
|
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if err != nil {
|
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t.Fatalf("parse failed: %v", err)
|
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}
|
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|
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symbols := ExtractSymbols(result.Tree, []byte(content), protocol.LangElixir, "test.ex")
|
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|
||||
// Check that we found some symbols
|
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if len(symbols) == 0 {
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t.Fatal("expected to find some symbols")
|
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}
|
||||
|
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// Look for specific expected symbols - we focus on top-level constructs
|
||||
// that the current implementation can reliably extract
|
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expectedSymbols := map[string]protocol.SymbolKind{
|
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"MyApp.User": protocol.SymbolModule,
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"Greeting": protocol.SymbolInterface,
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}
|
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|
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found := make(map[string]bool)
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for _, sym := range symbols {
|
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for name, expectedKind := range expectedSymbols {
|
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if sym.Name == name {
|
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found[name] = true
|
||||
if sym.Kind != expectedKind {
|
||||
t.Errorf("symbol %s: expected kind %s, got %s", sym.Name, expectedKind, sym.Kind)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
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for name := range expectedSymbols {
|
||||
if !found[name] {
|
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t.Errorf("expected to find symbol %s, found symbols: %v", name, symbols)
|
||||
}
|
||||
}
|
||||
|
||||
// Verify we found the defstruct
|
||||
foundStruct := false
|
||||
for _, sym := range symbols {
|
||||
if sym.Kind == protocol.SymbolStruct {
|
||||
foundStruct = true
|
||||
break
|
||||
}
|
||||
}
|
||||
if !foundStruct {
|
||||
t.Error("expected to find a struct symbol")
|
||||
}
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user