86 lines
2.4 KiB
Ruby
86 lines
2.4 KiB
Ruby
# typed: false
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# frozen_string_literal: true
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require "rubocop"
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module RuboCop
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module Cop
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# Helper functions for cops.
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#
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# @api private
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module HelperFunctions
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include RangeHelp
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# Checks for regex match of pattern in the node and
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# sets the appropriate instance variables to report the match.
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def regex_match_group(node, pattern)
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string_repr = string_content(node).encode("UTF-8", invalid: :replace)
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match_object = string_repr.match(pattern)
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return unless match_object
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node_begin_pos = start_column(node)
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line_begin_pos = line_start_column(node)
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@column = if node_begin_pos == line_begin_pos
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node_begin_pos + match_object.begin(0) - line_begin_pos
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else
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node_begin_pos + match_object.begin(0) - line_begin_pos + 1
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end
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@length = match_object.to_s.length
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@line_no = line_number(node)
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@source_buf = source_buffer(node)
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@offensive_node = node
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@offensive_source_range = source_range(@source_buf, @line_no, @column, @length)
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match_object
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end
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# Returns the begin position of the node's line in source code.
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def line_start_column(node)
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node.source_range.source_buffer.line_range(node.loc.line).begin_pos
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end
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# Returns the begin position of the node in source code.
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def start_column(node)
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node.source_range.begin_pos
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end
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# Returns the line number of the node.
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def line_number(node)
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node.loc.line
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end
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# Source buffer is required as an argument to report style violations.
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def source_buffer(node)
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node.source_range.source_buffer
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end
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# Returns the string representation if node is of type str(plain) or dstr(interpolated) or const.
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def string_content(node)
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case node.type
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when :str
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node.str_content
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when :dstr
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content = ""
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node.each_child_node(:str, :begin) do |child|
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content += if child.begin_type?
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child.source
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else
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child.str_content
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end
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end
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content
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when :const
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node.const_name
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when :sym
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node.children.first.to_s
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else
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""
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end
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end
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def problem(msg, &block)
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add_offense(@offensive_node, message: msg, &block)
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end
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end
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end
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end
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