69 lines
1.9 KiB
Ruby
69 lines
1.9 KiB
Ruby
# frozen_string_literal: true
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# Finds the diff position in the new diff that corresponds to the same location
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# specified by the provided position in the old diff.
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module Gitlab
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module Diff
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class PositionTracer
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attr_accessor :project
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attr_accessor :old_diff_refs
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attr_accessor :new_diff_refs
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attr_accessor :paths
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def initialize(project:, old_diff_refs:, new_diff_refs:, paths: nil)
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@project = project
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@old_diff_refs = old_diff_refs
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@new_diff_refs = new_diff_refs
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@paths = paths
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end
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def trace(old_position)
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return unless old_diff_refs&.complete? && new_diff_refs&.complete?
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return unless old_position.diff_refs == old_diff_refs
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@ignore_whitespace_change = old_position.ignore_whitespace_change
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strategy(old_position).new(self).trace(old_position)
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end
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def ac_diffs
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@ac_diffs ||= compare(
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old_diff_refs.base_sha || old_diff_refs.start_sha,
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new_diff_refs.base_sha || new_diff_refs.start_sha,
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straight: true
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)
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end
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def bd_diffs
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@bd_diffs ||= compare(old_diff_refs.head_sha, new_diff_refs.head_sha, straight: true)
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end
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def cd_diffs
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@cd_diffs ||= compare(new_diff_refs.start_sha, new_diff_refs.head_sha)
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end
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def diff_file(position)
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position.diff_file(project.repository)
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end
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private
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def strategy(old_position)
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if old_position.on_text?
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LineStrategy
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elsif old_position.on_file?
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FileStrategy
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else
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ImageStrategy
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end
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end
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def compare(start_sha, head_sha, straight: false)
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compare = CompareService.new(project, head_sha).execute(project, start_sha, straight: straight)
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compare.diffs(paths: paths, expanded: true, ignore_whitespace_change: @ignore_whitespace_change, include_stats:
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false)
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end
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end
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end
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end
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