20560974963

Committed 28 Dec 2025 11:21PM UTC coverage: 79.076% (+1.7%) from 77.331%

Build # 20560974963

Build Type

push

github

Committed by

web-flow

Commit Message

refactor: migrate parser from regex to token-based parser combinator (#29)

* refactor: migrate parser from regex to token-based parser combinator

- Replace monolithic parser_combinator.rb (2833 lines) with modular architecture
- Add Scanner for tokenization with regex literal support
- Create IR::InterpolatedString for string interpolation parsing
- Fix type inference for interpolated strings (returns String)
- Add TRuby::ParseError for unified error handling
- Organize parsers into primitives/, combinators/, and token/ directories
- Each file contains exactly one class (snake_case filename matches PascalCase class)

* fix: enhance parser to support ternary, splat args, and statement expressions

- Add ternary operator (? :) parsing in ExpressionParser
- Support double splat (**opts) and single splat (*args) in method calls
- Support keyword arguments (name: value) in method calls
- Allow case/if/unless/begin as assignment right-hand side values
- Improve generic type compatibility (Array[untyped] with Array[T])

Fixes type inference errors in keyword_args samples.

* style: fix RuboCop violations and adjust metrics limits

* fix: require set for Ruby 3.1 compatibility

Run Details

1849 of 2098 new or added lines in 53 files covered. (88.13%)

6 existing lines in 2 files now uncovered.

6644 of 8402 relevant lines covered (79.08%)

908.09 hits per line

Source File
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91.67

/lib/t_ruby/parser_combinator/parse_result.rb

# frozen_string_literal: true

module TRuby
  module ParserCombinator
    # Parse result - either success or failure
    class ParseResult
      attr_reader :value, :remaining, :position, :error

      def initialize(success:, value: nil, remaining: "", position: 0, error: nil)
        @success = success
        @value = value
        @remaining = remaining
        @position = position
        @error = error
      end

      def success?
        @success
      end

      def failure?
        !@success
      end

      def self.success(value, remaining, position)
        new(success: true, value: value, remaining: remaining, position: position)
      end

      def self.failure(error, remaining, position)
        new(success: false, error: error, remaining: remaining, position: position)
      end

      def map
        return self if failure?

        ParseResult.success(yield(value), remaining, position)
      end

      def flat_map
        return self if failure?

        yield(value, remaining, position)
      end
    end
  end
end

1	# frozen_string_literal: true
2
3	module TRuby	1✔
4	module ParserCombinator	1✔
5	# Parse result - either success or failure
6	class ParseResult	1✔
7	attr_reader :value, :remaining, :position, :error	1✔
8
9	def initialize(success:, value: nil, remaining: "", position: 0, error: nil)	1✔
10	@success = success	357,407✔
11	@value = value	357,407✔
12	@remaining = remaining	357,407✔
13	@position = position	357,407✔
14	@error = error	357,407✔
15	end
16
17	def success?	1✔
18	@success	102,966✔
19	end
20
21	def failure?	1✔
22	!@success	563,352✔
23	end
24
25	def self.success(value, remaining, position)	1✔
26	new(success: true, value: value, remaining: remaining, position: position)	242,509✔
27	end
28
29	def self.failure(error, remaining, position)	1✔
30	new(success: false, error: error, remaining: remaining, position: position)	114,898✔
31	end
32
33	def map	1✔
34	return self if failure?	168,488✔
35
36	ParseResult.success(yield(value), remaining, position)	84,601✔
37	end
38
39	def flat_map	1✔
NEW 40	return self if failure?	×
41
NEW 42	yield(value, remaining, position)	×
43	end
44	end
45	end
46	end

type-ruby / t-ruby / 20560974963

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