39 lines
989 B
Ruby
39 lines
989 B
Ruby
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require 'syntax/common'
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module Syntax
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# A default tokenizer for handling syntaxes that are not explicitly handled
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# elsewhere. It simply yields the given text as a single token.
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class Default
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# Yield the given text as a single token.
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def tokenize( text )
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yield Token.new( text, :normal )
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end
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end
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# A hash for registering syntax implementations.
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SYNTAX = Hash.new( Default )
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# Load the implementation of the requested syntax. If the syntax cannot be
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# found, or if it cannot be loaded for whatever reason, the Default syntax
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# handler will be returned.
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def load( syntax )
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begin
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require "syntax/lang/#{syntax}"
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rescue LoadError
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end
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SYNTAX[ syntax ].new
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end
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module_function :load
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# Return an array of the names of supported syntaxes.
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def all
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lang_dir = File.join(File.dirname(__FILE__), "syntax", "lang")
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Dir["#{lang_dir}/*.rb"].map { |path| File.basename(path, ".rb") }
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end
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module_function :all
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end
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