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module Ameba
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2017-10-30 20:00:01 +00:00
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# An entity that represents a Crystal source file.
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# Has path, lines of code and issues reported by rules.
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class Source
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include InlineComments
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include Reportable
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# Path to the source file.
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getter path : String
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# Crystal code (content of a source file).
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getter code : String
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@lines : Array(String)?
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@ast : Crystal::ASTNode?
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@fullpath : String?
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# Creates a new source by `code` and `path`.
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#
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# For example:
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#
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# ```
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# path = "./src/source.cr"
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# Ameba::Source.new File.read(path), path
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# ```
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#
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def initialize(@code : String, @path = "")
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end
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# Returns lines of code splitted by new line character.
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# Since `code` is immutable and can't be changed, this
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# method caches lines in an instance variable, so calling
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# it second time will not perform a split, but will return
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# lines instantly.
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#
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# ```
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# source = Ameba::Source.new "a = 1\nb = 2", path
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# source.lines # => ["a = 1", "b = 2"]
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# ```
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#
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def lines
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@lines ||= @code.split("\n")
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end
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# Returns AST nodes constructed by `Crystal::Parser`.
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#
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# ```
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# source = Ameba::Source.new code, path
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# source.ast
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# ```
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#
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def ast
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@ast ||=
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Crystal::Parser.new(code)
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.tap { |parser| parser.filename = @path }
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.parse
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end
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def fullpath
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@fullpath ||= File.expand_path @path
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end
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# Returns true if *filepath* matches the source's path, false if it does not.
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def matches_path?(filepath)
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path == filepath || path == File.expand_path(filepath)
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end
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end
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end
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