Sha256: e0f9b7b53fcda006d07b66232e832c2c1edb83e5130d49def8e508ddbf681a41
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Size: 1.13 KB
Versions: 27
Compression:
Stored size: 1.13 KB
Contents
module Parser
class Lexer::Dedenter
def initialize(dedent_level)
@dedent_level = dedent_level
@at_line_begin = true
@indent_level = 0
end
def dedent(string)
space_begin = space_end = offset = 0
last_index = string.length - 1
string.chars.each_with_index do |char, index|
if @at_line_begin
if char == ?\n || @indent_level >= @dedent_level
string.slice!(space_begin...space_end)
offset += space_end - space_begin - 1
@at_line_begin = false
redo if char == ?\n
end
case char
when ?\s
@indent_level += 1
space_end += 1
when ?\t
@indent_level += 8 - @indent_level % 8
space_end += 1
end
elsif char == ?\n && index == last_index
@at_line_begin = true
@indent_level = 0
space_begin = space_end = index - offset + 1
end
end
if @at_line_begin
string.slice!(space_begin..space_end)
end
nil
end
def interrupt
@at_line_begin = false
end
end
end
Version data entries
27 entries across 27 versions & 4 rubygems