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Versions: 19
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Contents
module Redcar
class EditView
class AlignAssignmentCommand < Redcar::DocumentCommand
OPERATORS = /(\|{0,2}[+-\/%*!&]?={1,3}[>~]?)/
RELEVANT_LINE_PATTERN = /^([^=]+?)#{OPERATORS}(.*$)/o
def execute
doc.expand_selection_to_full_lines
doc.replace_selection(&AlignAssignmentCommand.method(:align))
end
def self.align(text)
# get max left-hand and right-hand sides in 1 pass
lengths = text.lines.map do |line|
[line =~ OPERATORS || -1, $1 && $1.size || -1]
end
lhs_len = lengths.reduce(0) { |memo, len| len.first > memo ? len.first : memo }
rhs_len = lengths.reduce(0) { |memo, len| len.last > memo ? len.last : memo }
# now replace the first token of the relevant lines
text.lines.map do |line|
line.chomp!
if line =~ RELEVANT_LINE_PATTERN
"%-#{lhs_len}s%#{rhs_len}s %s" % [$1, $2, $3.strip]
else
line
end
end.join("\n")
end
def adjust_selection_to_full_lines(start_offset, end_offset)
#are the selections in the right order?
if start_offset > end_offset
end_offset, start_offset = start_offset, end_offset
end
start_index = doc.line_at_offset(start_offset)
end_index = doc.line_at_offset(end_offset)
# is the selection of the last line empty?
if end_offset == doc.offset_at_line(end_index)
end_index -= 1
end
start_offset = doc.offset_at_line(start_index)
end_offset = doc.offset_at_inner_end_of_line(end_index)
doc.set_selection_range(start_offset, end_offset)
end
end
end
end
Version data entries
19 entries across 19 versions & 2 rubygems