зеркало из https://github.com/github/ruby.git
[ruby/prism] Fix token incompatibility for `Prism::Translation::Parser::Lexer`
This PR fixes token incompatibility for `Prism::Translation::Parser::Lexer` when using backquoted heredoc indetiner: ```ruby <<-` FOO` a b FOO ``` ## Parser gem (Expected) Returns `tXSTRING_BEG` as the first token: ```console $ bundle exec ruby -Ilib -rparser/ruby33 -ve \ 'buf = Parser::Source::Buffer.new("example.rb"); buf.source = File.read("example.rb"); p Parser::Ruby33.new.tokenize(buf)' ruby 3.3.0 (2023-12-25 revision https://github.com/ruby/prism/commit/5124f9ac75) [x86_64-darwin22] [s(:xstr, s(:str, "a\n"), s(:str, "b\n")), [], [[:tXSTRING_BEG, ["<<`", #<Parser::Source::Range example.rb 0...10>]], [:tSTRING_CONTENT, ["a\n", #<Parser::Source::Range example.rb 11...13>]], [:tSTRING_CONTENT, ["b\n", #<Parser::Source::Range example.rb 13...15>]], [:tSTRING_END, [" FOO", #<Parser::Source::Range example.rb 15...23>]], [:tNL, [nil, #<Parser::Source::Range example.rb 10...11>]]]] ``` ## `Prism::Translation::Parser` (Actual) Previously, the tokens returned by the Parser gem were different. The escaped backslash does not match in the `tSTRING_BEG` token and value of `tSTRING_END` token. ```console $ bundle exec ruby -Ilib -rprism -rprism/translation/parser33 -ve \ 'buf = Parser::Source::Buffer.new("example.rb"); buf.source = File.read("example.rb"); p Prism::Translation::Parser33.new.tokenize(buf)' ruby 3.3.0 (2023-12-25 revision https://github.com/ruby/prism/commit/5124f9ac75) [x86_64-darwin22] [s(:xstr, s(:str, "a\n"), s(:str, "b\n")), [], [[:tSTRING_BEG, ["<<\"", #<Parser::Source::Range example.rb 0...10>]], [:tSTRING_CONTENT, ["a\n", #<Parser::Source::Range example.rb 11...13>]], [:tSTRING_CONTENT, ["b\n", #<Parser::Source::Range example.rb 13...15>]], [:tSTRING_END, ["` FOO`", #<Parser::Source::Range example.rb 15...23>]], [:tNL, [nil, #<Parser::Source::Range example.rb 10...11>]]]] ``` After this correction, the AST and tokens returned by the Parser gem are the same: ```console $ bunlde exec ruby -Ilib -rprism -rprism/translation/parser33 -ve \ 'buf = Parser::Source::Buffer.new("example.rb"); buf.source = File.read("example.rb"); p Prism::Translation::Parser33.new.tokenize(buf)' ruby 3.3.0 (2023-12-25 revision https://github.com/ruby/prism/commit/5124f9ac75) [x86_64-darwin22] [s(:xstr, s(:str, "a\n"), s(:str, "b\n")), [], [[:tXSTRING_BEG, ["<<`", #<Parser::Source::Range example.rb 0...10>]], [:tSTRING_CONTENT, ["a\n", #<Parser::Source::Range example.rb 11...13>]], [:tSTRING_CONTENT, ["b\n", #<Parser::Source::Range example.rb 13...15>]], [:tSTRING_END, [" FOO", #<Parser::Source::Range example.rb 15...23>]], [:tNL, [nil, #<Parser::Source::Range example.rb 10...11>]]]] ``` https://github.com/ruby/prism/commit/308f8d85a1
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3605d6076d
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@ -278,7 +278,7 @@ module Prism
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value = nil
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when :tSTRING_BEG
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if token.type == :HEREDOC_START
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heredoc_identifier_stack.push(value.match(/<<[-~]?["']?(?<heredoc_identifier>.*?)["']?\z/)[:heredoc_identifier])
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heredoc_identifier_stack.push(value.match(/<<[-~]?["'`]?(?<heredoc_identifier>.*?)["'`]?\z/)[:heredoc_identifier])
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end
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if ["\"", "'"].include?(value) && (next_token = lexed[index][0]) && next_token.type == :STRING_END
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next_location = token.location.join(next_token.location)
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@ -294,7 +294,12 @@ module Prism
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index += 2
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elsif value.start_with?("<<")
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quote = value[2] == "-" || value[2] == "~" ? value[3] : value[2]
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value = "<<#{quote == "'" || quote == "\"" ? quote : "\""}"
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if quote == "`"
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type = :tXSTRING_BEG
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value = "<<`"
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else
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value = "<<#{quote == "'" || quote == "\"" ? quote : "\""}"
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end
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end
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when :tSTRING_CONTENT
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unless (lines = token.value.lines).one?
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@ -8,6 +8,11 @@ a
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b
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FOO
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<<-` FOO`
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a
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b
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FOO
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<<-' FOO'
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a
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b
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@ -1,8 +1,8 @@
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@ ProgramNode (location: (1,0)-(21,10))
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@ ProgramNode (location: (1,0)-(26,10))
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├── locals: []
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└── statements:
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@ StatementsNode (location: (1,0)-(21,10))
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└── body: (length: 5)
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@ StatementsNode (location: (1,0)-(26,10))
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└── body: (length: 6)
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├── @ StringNode (location: (1,0)-(1,10))
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│ ├── flags: ∅
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│ ├── opening_loc: (1,0)-(1,10) = "<<-' FOO'"
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@ -15,41 +15,47 @@
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│ ├── content_loc: (7,0)-(9,0) = "a\nb\n"
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│ ├── closing_loc: (9,0)-(10,0) = " FOO\n"
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│ └── unescaped: "a\nb\n"
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├── @ StringNode (location: (11,0)-(11,10))
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├── @ XStringNode (location: (11,0)-(11,10))
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│ ├── flags: ∅
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│ ├── opening_loc: (11,0)-(11,10) = "<<-' FOO'"
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│ ├── opening_loc: (11,0)-(11,10) = "<<-` FOO`"
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│ ├── content_loc: (12,0)-(14,0) = "a\nb\n"
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│ ├── closing_loc: (14,0)-(15,0) = " FOO\n"
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│ ├── closing_loc: (14,0)-(15,0) = " FOO\n"
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│ └── unescaped: "a\nb\n"
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├── @ InterpolatedStringNode (location: (16,0)-(16,10))
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│ ├── opening_loc: (16,0)-(16,10) = "<<~' FOO'"
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├── @ StringNode (location: (16,0)-(16,10))
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│ ├── flags: ∅
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│ ├── opening_loc: (16,0)-(16,10) = "<<-' FOO'"
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│ ├── content_loc: (17,0)-(19,0) = "a\nb\n"
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│ ├── closing_loc: (19,0)-(20,0) = " FOO\n"
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│ └── unescaped: "a\nb\n"
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├── @ InterpolatedStringNode (location: (21,0)-(21,10))
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│ ├── opening_loc: (21,0)-(21,10) = "<<~' FOO'"
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│ ├── parts: (length: 2)
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│ │ ├── @ StringNode (location: (17,0)-(18,0))
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│ │ ├── @ StringNode (location: (22,0)-(23,0))
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│ │ │ ├── flags: ∅
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│ │ │ ├── opening_loc: ∅
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│ │ │ ├── content_loc: (17,0)-(18,0) = "a\n"
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│ │ │ ├── content_loc: (22,0)-(23,0) = "a\n"
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│ │ │ ├── closing_loc: ∅
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│ │ │ └── unescaped: "a\n"
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│ │ └── @ StringNode (location: (18,0)-(19,0))
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│ │ └── @ StringNode (location: (23,0)-(24,0))
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│ │ ├── flags: ∅
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│ │ ├── opening_loc: ∅
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│ │ ├── content_loc: (18,0)-(19,0) = "b\n"
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│ │ ├── content_loc: (23,0)-(24,0) = "b\n"
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│ │ ├── closing_loc: ∅
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│ │ └── unescaped: "b\n"
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│ └── closing_loc: (19,0)-(20,0) = " FOO\n"
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└── @ InterpolatedStringNode (location: (21,0)-(21,10))
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├── opening_loc: (21,0)-(21,10) = "<<~' FOO'"
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│ └── closing_loc: (24,0)-(25,0) = " FOO\n"
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└── @ InterpolatedStringNode (location: (26,0)-(26,10))
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├── opening_loc: (26,0)-(26,10) = "<<~' FOO'"
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├── parts: (length: 2)
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│ ├── @ StringNode (location: (22,0)-(23,0))
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│ ├── @ StringNode (location: (27,0)-(28,0))
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│ │ ├── flags: ∅
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│ │ ├── opening_loc: ∅
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│ │ ├── content_loc: (22,0)-(23,0) = "a\n"
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│ │ ├── content_loc: (27,0)-(28,0) = "a\n"
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│ │ ├── closing_loc: ∅
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│ │ └── unescaped: "a\n"
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│ └── @ StringNode (location: (23,0)-(24,0))
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│ └── @ StringNode (location: (28,0)-(29,0))
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│ ├── flags: ∅
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│ ├── opening_loc: ∅
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│ ├── content_loc: (23,0)-(24,0) = "b\n"
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│ ├── content_loc: (28,0)-(29,0) = "b\n"
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│ ├── closing_loc: ∅
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│ └── unescaped: "b\n"
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└── closing_loc: (24,0)-(25,0) = " FOO\n"
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└── closing_loc: (29,0)-(30,0) = " FOO\n"
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