-
-
Notifications
You must be signed in to change notification settings - Fork 152
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Reintroduces regular expression mutations to `mutant` by reverting commit 21d3fef with various improvements and adjustments.
- Loading branch information
Showing
43 changed files
with
2,004 additions
and
20 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,37 @@ | ||
| # frozen_string_literal: true | ||
|
|
||
| module Mutant | ||
| module AST | ||
| # Regexp source mapper | ||
| module Regexp | ||
| # Parse regex string into expression | ||
| # | ||
| # @param regexp [String] | ||
| # | ||
| # @return [Regexp::Expression, nil] | ||
| def self.parse(regexp) | ||
| ::Regexp::Parser.parse(regexp) | ||
| end | ||
|
|
||
| # Convert expression into ast node | ||
| # | ||
| # @param expression [Regexp::Expression] | ||
| # | ||
| # @return [Parser::AST::Node] | ||
| def self.to_ast(expression) | ||
| ast_type = :"regexp_#{expression.token}_#{expression.type}" | ||
|
|
||
| Transformer.lookup(ast_type).to_ast(expression) | ||
| end | ||
|
|
||
| # Convert node into expression | ||
| # | ||
| # @param node [Parser::AST::Node] | ||
| # | ||
| # @return [Regexp::Expression] | ||
| def self.to_expression(node) | ||
| Transformer.lookup(node.type).to_expression(node) | ||
| end | ||
| end # Regexp | ||
| end # AST | ||
| end # Mutant |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,150 @@ | ||
| # frozen_string_literal: true | ||
|
|
||
| module Mutant | ||
| module AST | ||
| module Regexp | ||
| # Regexp bijective mapper | ||
| # | ||
| # Transforms parsed regular expression representation from | ||
| # `Regexp::Expression` instances (provided by `regexp_parser`) into | ||
| # equivalent representations using `Parser::AST::Node` | ||
| class Transformer | ||
| include AbstractType | ||
|
|
||
| REGISTRY = Registry.new | ||
|
|
||
| # Lookup transformer class for regular expression node type | ||
| # | ||
| # @param type [Symbol] | ||
| # | ||
| # @return [Class<Transformer>] | ||
| def self.lookup(type) | ||
| REGISTRY.lookup(type) | ||
| end | ||
|
|
||
| def self.register(type) | ||
| REGISTRY.register(type, self) | ||
| end | ||
| private_class_method :register | ||
|
|
||
| # Transform expression | ||
| # | ||
| # @param expression [Regexp::Expression] | ||
| # | ||
| # @return [Parser::AST::Node] | ||
| def self.to_ast(expression) | ||
| self::ExpressionToAST.call(expression) | ||
| end | ||
|
|
||
| # Transform node | ||
| # | ||
| # @param node [Parser::AST::Node] | ||
| # | ||
| # @return [Regexp::Expression] | ||
| def self.to_expression(node) | ||
| self::ASTToExpression.call(node) | ||
| end | ||
|
|
||
| # Abstract expression transformer | ||
| class ExpressionToAST | ||
| PREFIX = :regexp | ||
|
|
||
| include Concord.new(:expression), Procto.call, AST::Sexp, AbstractType, Adamantium | ||
|
|
||
| private | ||
|
|
||
| def ast(*children) | ||
| s(type, *children) | ||
| end | ||
|
|
||
| def quantify(node) | ||
| return node unless expression.quantified? | ||
|
|
||
| Quantifier.to_ast(expression.quantifier).append(node) | ||
| end | ||
|
|
||
| def children | ||
| expression.map(&Regexp.public_method(:to_ast)) | ||
| end | ||
|
|
||
| def type | ||
| :"#{PREFIX}_#{expression.token}_#{expression.type}" | ||
| end | ||
| end # ExpressionToAST | ||
|
|
||
| # Abstract node transformer | ||
| class ASTToExpression | ||
| include Concord.new(:node), Procto.call, AbstractType, Adamantium | ||
|
|
||
| # Call generic transform method and freeze result | ||
| # | ||
| # @return [Regexp::Expression] | ||
| def call | ||
| transform.freeze | ||
| end | ||
|
|
||
| private | ||
|
|
||
| abstract_method :transform | ||
|
|
||
| def subexpressions | ||
| node.children.map(&Regexp.public_method(:to_expression)) | ||
| end | ||
| end # ASTToExpression | ||
|
|
||
| # Mixin for node transformers | ||
| # | ||
| # Helps construct a mapping from Parser::AST::Node domain to | ||
| # Regexp::Expression domain | ||
| module LookupTable | ||
| Mapping = Class.new.include(Concord::Public.new(:token, :regexp_class)) | ||
|
|
||
| # Table mapping ast types to object information for regexp domain | ||
| class Table | ||
|
|
||
| # Coerce array of mapping information into structured table | ||
| # | ||
| # @param [Array(Symbol, Array, Class<Regexp::Expression>)] | ||
| # | ||
| # @return [Table] | ||
| def self.create(*rows) | ||
| table = rows.map do |ast_type, token, klass| | ||
| [ast_type, Mapping.new(::Regexp::Token.new(*token), klass)] | ||
| end.to_h | ||
|
|
||
| new(table) | ||
| end | ||
|
|
||
| include Concord.new(:table), Adamantium | ||
|
|
||
| # Types defined by the table | ||
| # | ||
| # @return [Array<Symbol>] | ||
| def types | ||
| table.keys | ||
| end | ||
|
|
||
| # Lookup mapping information given an ast node type | ||
| # | ||
| # @param type [Symbol] | ||
| # | ||
| # @return [Mapping] | ||
| def lookup(type) | ||
| table.fetch(type) | ||
| end | ||
| end # Table | ||
|
|
||
| private | ||
|
|
||
| def expression_token | ||
| self.class::TABLE.lookup(node.type).token | ||
| end | ||
|
|
||
| def expression_class | ||
| self.class::TABLE.lookup(node.type).regexp_class | ||
| end | ||
| end # LookupTable | ||
| end # Transformer | ||
| end # Regexp | ||
| end # AST | ||
| end # Mutant |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,121 @@ | ||
| # frozen_string_literal: true | ||
|
|
||
| module Mutant | ||
| module AST | ||
| module Regexp | ||
| class Transformer | ||
| # Transformer for nodes which map directly to other domain | ||
| # | ||
| # A node maps "directly" to another domain if the node never | ||
| # has children or text which needs to be preserved for a mapping | ||
| # | ||
| # @example direct mapping | ||
| # | ||
| # input = /\d/ | ||
| # expression = Regexp::Parser.parse(input).first | ||
| # node = Transformer::Direct.to_ast(expression) | ||
| # | ||
| # # the digit type always has the same text and no children | ||
| # expression.text # => "\\d" | ||
| # expression.terminal? # => true | ||
| # | ||
| # # therefore the `Parser::AST::Node` is always the same | ||
| # node # => s(:regexp_digit_type) | ||
| class Direct < self | ||
| # Mapper from `Regexp::Expression` to `Parser::AST::Node` | ||
| class ExpressionToAST < Transformer::ExpressionToAST | ||
| # Transform expression into node | ||
| # | ||
| # @return [Parser::AST::Node] | ||
| def call | ||
| quantify(ast) | ||
| end | ||
| end # ExpressionToAST | ||
|
|
||
| # Mapper from `Parser::AST::Node` to `Regexp::Expression` | ||
| class ASTToExpression < Transformer::ASTToExpression | ||
| include LookupTable | ||
|
|
||
| # rubocop:disable Layout/LineLength | ||
| TABLE = Table.create( | ||
| [:regexp_alnum_posixclass, [:posixclass, :alnum, '[:alnum:]'], ::Regexp::Expression::PosixClass], | ||
| [:regexp_alpha_posixclass, [:posixclass, :alpha, '[:alpha:]'], ::Regexp::Expression::PosixClass], | ||
| [:regexp_alpha_property, [:property, :alpha, '\p{Alpha}'], ::Regexp::Expression::UnicodeProperty::Alpha], | ||
| [:regexp_alternation_escape, [:escape, :alternation, '\|'], ::Regexp::Expression::EscapeSequence::Literal], | ||
| [:regexp_arabic_property, [:property, :arabic, '\p{Arabic}'], ::Regexp::Expression::UnicodeProperty::Script], | ||
| [:regexp_ascii_posixclass, [:posixclass, :ascii, '[:ascii:]'], ::Regexp::Expression::PosixClass], | ||
| [:regexp_backspace_escape, [:escape, :backspace, '\b'], ::Regexp::Expression::EscapeSequence::Backspace], | ||
| [:regexp_bell_escape, [:escape, :bell, '\a'], ::Regexp::Expression::EscapeSequence::Literal], | ||
| [:regexp_blank_posixclass, [:posixclass, :blank, '[:blank:]'], ::Regexp::Expression::PosixClass], | ||
| [:regexp_bol_anchor, [:anchor, :bol, '^'], ::Regexp::Expression::Anchor::BeginningOfLine], | ||
| [:regexp_bol_escape, [:escape, :bol, '\^'], ::Regexp::Expression::EscapeSequence::Literal], | ||
| [:regexp_bos_anchor, [:anchor, :bos, '\\A'], ::Regexp::Expression::Anchor::BeginningOfString], | ||
| [:regexp_carriage_escape, [:escape, :carriage, '\r'], ::Regexp::Expression::EscapeSequence::Literal], | ||
| [:regexp_cntrl_posixclass, [:posixclass, :cntrl, '[:cntrl:]'], ::Regexp::Expression::PosixClass], | ||
| [:regexp_digit_posixclass, [:posixclass, :digit, '[:digit:]'], ::Regexp::Expression::PosixClass], | ||
| [:regexp_digit_type, [:type, :digit, '\d'], ::Regexp::Expression::CharacterType::Digit], | ||
| [:regexp_dot_escape, [:escape, :dot, '\.'], ::Regexp::Expression::EscapeSequence::Literal], | ||
| [:regexp_dot_meta, [:meta, :dot, '.'], ::Regexp::Expression::CharacterType::Any], | ||
| [:regexp_eol_anchor, [:anchor, :eol, '$'], ::Regexp::Expression::Anchor::EndOfLine], | ||
| [:regexp_eol_escape, [:escape, :eol, '\$'], ::Regexp::Expression::EscapeSequence::Literal], | ||
| [:regexp_eos_anchor, [:anchor, :eos, '\\z'], ::Regexp::Expression::Anchor::EndOfString], | ||
| [:regexp_eos_ob_eol_anchor, [:anchor, :eos_ob_eol, '\\Z'], ::Regexp::Expression::Anchor::EndOfStringOrBeforeEndOfLine], | ||
| [:regexp_escape_escape, [:escape, :escape, '\e'], ::Regexp::Expression::EscapeSequence::AsciiEscape], | ||
| [:regexp_form_feed_escape, [:escape, :form_feed, '\f'], ::Regexp::Expression::EscapeSequence::FormFeed], | ||
| [:regexp_graph_posixclass, [:posixclass, :graph, '[:graph:]'], ::Regexp::Expression::PosixClass], | ||
| [:regexp_group_close_escape, [:escape, :group_close, '\)'], ::Regexp::Expression::EscapeSequence::Literal], | ||
| [:regexp_group_open_escape, [:escape, :group_open, '\('], ::Regexp::Expression::EscapeSequence::Literal], | ||
| [:regexp_han_property, [:property, :han, '\p{Han}'], ::Regexp::Expression::UnicodeProperty::Script], | ||
| [:regexp_hangul_property, [:property, :hangul, '\p{Hangul}'], ::Regexp::Expression::UnicodeProperty::Script], | ||
| [:regexp_hex_type, [:type, :hex, '\h'], ::Regexp::Expression::CharacterType::Hex], | ||
| [:regexp_hiragana_property, [:property, :hiragana, '\p{Hiragana}'], ::Regexp::Expression::UnicodeProperty::Script], | ||
| [:regexp_interval_close_escape, [:escape, :interval_close, '\}'], ::Regexp::Expression::EscapeSequence::Literal], | ||
| [:regexp_interval_open_escape, [:escape, :interval_open, '\{'], ::Regexp::Expression::EscapeSequence::Literal], | ||
| [:regexp_katakana_property, [:property, :katakana, '\p{Katakana}'], ::Regexp::Expression::UnicodeProperty::Script], | ||
| [:regexp_letter_property, [:property, :letter, '\p{L}'], ::Regexp::Expression::UnicodeProperty::Letter::Any], | ||
| [:regexp_linebreak_type, [:type, :linebreak, '\R'], ::Regexp::Expression::CharacterType::Linebreak], | ||
| [:regexp_lower_posixclass, [:posixclass, :lower, '[:lower:]'], ::Regexp::Expression::PosixClass], | ||
| [:regexp_mark_keep, [:keep, :mark, '\K'], ::Regexp::Expression::Keep::Mark], | ||
| [:regexp_match_start_anchor, [:anchor, :match_start, '\\G'], ::Regexp::Expression::Anchor::MatchStart], | ||
| [:regexp_newline_escape, [:escape, :newline, '\n'], ::Regexp::Expression::EscapeSequence::Literal], | ||
| [:regexp_nondigit_type, [:type, :nondigit, '\D'], ::Regexp::Expression::CharacterType::NonDigit], | ||
| [:regexp_nonhex_type, [:type, :nonhex, '\H'], ::Regexp::Expression::CharacterType::NonHex], | ||
| [:regexp_nonspace_type, [:type, :nonspace, '\S'], ::Regexp::Expression::CharacterType::NonSpace], | ||
| [:regexp_nonword_boundary_anchor, [:anchor, :nonword_boundary, '\\B'], ::Regexp::Expression::Anchor::NonWordBoundary], | ||
| [:regexp_nonword_type, [:type, :nonword, '\W'], ::Regexp::Expression::CharacterType::NonWord], | ||
| [:regexp_one_or_more_escape, [:escape, :one_or_more, '\+'], ::Regexp::Expression::EscapeSequence::Literal], | ||
| [:regexp_print_nonposixclass, [:nonposixclass, :print, '[:^print:]'], ::Regexp::Expression::PosixClass], | ||
| [:regexp_print_nonproperty, [:nonproperty, :print, '\P{Print}'], ::Regexp::Expression::UnicodeProperty::Print], | ||
| [:regexp_print_posixclass, [:posixclass, :print, '[:print:]'], ::Regexp::Expression::PosixClass], | ||
| [:regexp_print_posixclass, [:posixclass, :print, '[:print:]'], ::Regexp::Expression::PosixClass], | ||
| [:regexp_print_property, [:property, :print, '\p{Print}'], ::Regexp::Expression::UnicodeProperty::Print], | ||
| [:regexp_punct_posixclass, [:posixclass, :punct, '[:punct:]'], ::Regexp::Expression::PosixClass], | ||
| [:regexp_set_close_escape, [:escape, :set_close, '\]'], ::Regexp::Expression::EscapeSequence::Literal], | ||
| [:regexp_set_open_escape, [:escape, :set_open, '\['], ::Regexp::Expression::EscapeSequence::Literal], | ||
| [:regexp_space_posixclass, [:posixclass, :space, '[:space:]'], ::Regexp::Expression::PosixClass], | ||
| [:regexp_space_type, [:type, :space, '\s'], ::Regexp::Expression::CharacterType::Space], | ||
| [:regexp_upper_posixclass, [:posixclass, :upper, '[:upper:]'], ::Regexp::Expression::PosixClass], | ||
| [:regexp_vertical_tab_escape, [:escape, :vertical_tab, '\v'], ::Regexp::Expression::EscapeSequence::VerticalTab], | ||
| [:regexp_word_boundary_anchor, [:anchor, :word_boundary, '\b'], ::Regexp::Expression::Anchor::WordBoundary], | ||
| [:regexp_word_posixclass, [:posixclass, :word, '[:word:]'], ::Regexp::Expression::PosixClass], | ||
| [:regexp_word_type, [:type, :word, '\w'], ::Regexp::Expression::CharacterType::Word], | ||
| [:regexp_xdigit_posixclass, [:posixclass, :xdigit, '[:xdigit:]'], ::Regexp::Expression::PosixClass], | ||
| [:regexp_xgrapheme_type, [:type, :xgrapheme, '\X'], ::Regexp::Expression::CharacterType::ExtendedGrapheme], | ||
| [:regexp_zero_or_more_escape, [:escape, :zero_or_more, '\*'], ::Regexp::Expression::EscapeSequence::Literal], | ||
| [:regexp_zero_or_one_escape, [:escape, :zero_or_one, '\?'], ::Regexp::Expression::EscapeSequence::Literal] | ||
| ) | ||
| # rubocop:enable Layout/LineLength | ||
|
|
||
| private | ||
|
|
||
| def transform | ||
| expression_class.new(expression_token) | ||
| end | ||
| end # ASTToExpression | ||
|
|
||
| ASTToExpression::TABLE.types.each(&method(:register)) | ||
| end # Direct | ||
| end # Transformer | ||
| end # Regexp | ||
| end # AST | ||
| end # Mutant |
Oops, something went wrong.