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require 'spec_helper'
RSpec.describe('EscapeSequence parsing') do
es = EscapeSequence
include_examples 'parse', /a\ac/, 1 => [:escape, :bell, es::Bell]
include_examples 'parse', /a\ec/, 1 => [:escape, :escape, es::AsciiEscape]
include_examples 'parse', /a\fc/, 1 => [:escape, :form_feed, es::FormFeed]
include_examples 'parse', /a\nc/, 1 => [:escape, :newline, es::Newline]
include_examples 'parse', /a\rc/, 1 => [:escape, :carriage, es::Return]
include_examples 'parse', /a\tc/, 1 => [:escape, :tab, es::Tab]
include_examples 'parse', /a\vc/, 1 => [:escape, :vertical_tab, es::VerticalTab]
# meta character escapes
include_examples 'parse', /a\.c/, 1 => [:escape, :dot, es::Literal]
include_examples 'parse', /a\?c/, 1 => [:escape, :zero_or_one, es::Literal]
include_examples 'parse', /a\*c/, 1 => [:escape, :zero_or_more, es::Literal]
include_examples 'parse', /a\+c/, 1 => [:escape, :one_or_more, es::Literal]
include_examples 'parse', /a\|c/, 1 => [:escape, :alternation, es::Literal]
include_examples 'parse', /a\(c/, 1 => [:escape, :group_open, es::Literal]
include_examples 'parse', /a\)c/, 1 => [:escape, :group_close, es::Literal]
include_examples 'parse', /a\{c/, 1 => [:escape, :interval_open, es::Literal]
include_examples 'parse', /a\}c/, 1 => [:escape, :interval_close, es::Literal]
# unicode escapes
include_examples 'parse', /a\u0640/, 1 => [:escape, :codepoint, es::Codepoint]
include_examples 'parse', /a\u{41 1F60D}/, 1 => [:escape, :codepoint_list, es::CodepointList]
include_examples 'parse', /a\u{10FFFF}/, 1 => [:escape, :codepoint_list, es::CodepointList]
# hex escapes
include_examples 'parse', /a\xFF/n, 1 => [:escape, :hex, es::Hex]
# octal escapes
include_examples 'parse', /a\177/n, 1 => [:escape, :octal, es::Octal]
# test #char and #codepoint
include_examples 'parse', /\n/, 0 => [char: "\n", codepoint: 10 ]
include_examples 'parse', /\?/, 0 => [char: '?', codepoint: 63 ]
include_examples 'parse', /\101/, 0 => [char: 'A', codepoint: 65 ]
include_examples 'parse', /\x42/, 0 => [char: 'B', codepoint: 66 ]
include_examples 'parse', /\u0043/, 0 => [char: 'C', codepoint: 67 ]
include_examples 'parse', /\u{44 45}/, 0 => [chars: %w[D E], codepoints: [68, 69]]
specify('codepoint_list #char and #codepoint raise errors') do
exp = RP.parse(/\u{44 45}/)[0]
expect { exp.char }.to raise_error(/#chars/)
expect { exp.codepoint }.to raise_error(/#codepoints/)
end
# Meta/control espaces
#
# After the following fix in Ruby 3.1, a Regexp#source containing meta/control
# escapes can only be set with the Regexp::new constructor.
# In Regexp literals, these escapes are now pre-processed to hex escapes.
#
# https://github.com/ruby/ruby/commit/11ae581a4a7f5d5f5ec6378872eab8f25381b1b9
n = ->(regexp_body){ Regexp.new(regexp_body.force_encoding('ascii-8bit')) }
include_examples 'parse', n.('\\\\\c2b'), 1 => [es::Control, text: '\c2', char: "\x12", codepoint: 18 ]
include_examples 'parse', n.('\d\C-C\w'), 1 => [es::Control, text: '\C-C', char: "\x03", codepoint: 3 ]
include_examples 'parse', n.('\Z\M-Z'), 1 => [es::Meta, text: '\M-Z', char: "\u00DA", codepoint: 218]
include_examples 'parse', n.('\A\M-\C-X'), 1 => [es::MetaControl, text: '\M-\C-X', char: "\u0098", codepoint: 152]
include_examples 'parse', n.('\A\M-\cX'), 1 => [es::MetaControl, text: '\M-\cX', char: "\u0098", codepoint: 152]
include_examples 'parse', n.('\A\C-\M-X'), 1 => [es::MetaControl, text: '\C-\M-X', char: "\u0098", codepoint: 152]
include_examples 'parse', n.('\A\c\M-X'), 1 => [es::MetaControl, text: '\c\M-X', char: "\u0098", codepoint: 152]
end
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