102 lines
2.7 KiB
Ruby
102 lines
2.7 KiB
Ruby
# frozen_string_literal: true
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module Projects
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class LsifDataService
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attr_reader :file, :project, :commit_id, :docs,
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:doc_ranges, :ranges, :def_refs, :hover_refs
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CACHE_EXPIRE_IN = 1.hour
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def initialize(file, project, commit_id)
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@file = file
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@project = project
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@commit_id = commit_id
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fetch_data!
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end
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def execute(path)
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doc_id = find_doc_id(docs, path)
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dir_absolute_path = docs[doc_id]&.delete_suffix(path)
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doc_ranges[doc_id]&.map do |range_id|
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location, ref_id = ranges[range_id].values_at('loc', 'ref_id')
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line_data, column_data = location
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{
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start_line: line_data.first,
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end_line: line_data.last,
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start_char: column_data.first,
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end_char: column_data.last,
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definition_url: definition_url_for(def_refs[ref_id], dir_absolute_path),
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hover: highlighted_hover(hover_refs[ref_id])
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}
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end
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end
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private
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def fetch_data
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Rails.cache.fetch("project:#{project.id}:lsif:#{commit_id}", expires_in: CACHE_EXPIRE_IN) do
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data = nil
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file.open do |stream|
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Zlib::GzipReader.wrap(stream) do |gz_stream|
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data = JSON.parse(gz_stream.read)
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end
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end
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data
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end
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end
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def fetch_data!
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data = fetch_data
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@docs = data['docs']
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@doc_ranges = data['doc_ranges']
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@ranges = data['ranges']
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@def_refs = data['def_refs']
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@hover_refs = data['hover_refs']
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end
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def find_doc_id(docs, path)
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docs.reduce(nil) do |doc_id, (id, doc_path)|
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next doc_id unless doc_path =~ /#{path}$/
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if doc_id.nil? || docs[doc_id].size > doc_path.size
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doc_id = id
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end
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doc_id
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end
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end
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def definition_url_for(ref_id, dir_absolute_path)
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return unless range = ranges[ref_id]
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def_doc_id, location = range.values_at('doc_id', 'loc')
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localized_doc_url = docs[def_doc_id].delete_prefix(dir_absolute_path)
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# location is stored as [[start_line, end_line], [start_char, end_char]]
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start_line = location.first.first
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line_anchor = "L#{start_line + 1}"
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definition_ref_path = [commit_id, localized_doc_url].join('/')
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Gitlab::Routing.url_helpers.project_blob_path(project, definition_ref_path, anchor: line_anchor)
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end
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def highlighted_hover(hovers)
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hovers&.map do |hover|
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# Documentation for a method which is added as comments on top of the method
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# is stored as a raw string value in LSIF file
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next { value: hover } unless hover.is_a?(Hash)
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value = Gitlab::Highlight.highlight(nil, hover['value'], language: hover['language'])
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{ language: hover['language'], value: value }
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end
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end
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end
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end
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