111 lines
2.9 KiB
Ruby
111 lines
2.9 KiB
Ruby
module Mm2ep
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module Depend
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class TestLexer
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attr_reader :truc, :tokens, :fait, :non_traites, :i, :atteint
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BOOL_EXPR = ['T_BOOL', 'F_BOOL'].freeze
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EXPR = {
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'EXPR_T1' => ['VAR'],
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'EXPR_T2' => ['BOOL_EXPR'],
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'EXPR_T3' => ['VAR', 'SPACE', 'EQ_OP', 'SPACE', 'NUMBER'],
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'EXPR_T4' => ['VAR', 'SPACE', 'EQ_OP', 'SPACE', 'STRING'],
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'EXPR_T5' => ['VAR', 'SPACE', 'EQ_OP', 'SPACE', 'T_BOOL'],
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'EXPR_T6' => ['VAR', 'SPACE', 'EQ_OP', 'SPACE', 'F_BOOL'],
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'EXPR_NT1' => ['EXPR', 'SPACE', 'OR_OP', 'SPACE', 'EXPR'],
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'EXPR_NT2' => ['EXPR', 'SPACE', 'AND_OP', 'SPACE', 'EXPR'],
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'EXPR_NT3' => ['L_PAR', 'SPACE', 'EXPR', 'SPACE', 'R_PAR'],
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'EXPR_NT4' => ['NOT_OP', 'SPACE', 'EXPR']
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}.freeze
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def initialize tokens
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@non_traites = []
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@fait = false
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@tokens= tokens
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@i = 0
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@atteint = false
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end
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#
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def try_expr
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@truc = Hash[@truc.sort_by { |key, value| value.length }.reverse!]
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@truc.each do |_, value|
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if @tokens[@i...@i+value.length].eql? value
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@tokens.slice!(@i...@i+value.length)
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@tokens.insert(@i, 'EXPR')
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unless @non_traites.empty?
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@i -= 2
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@non_traites.pop(2)
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@fait = true
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break
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end
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end
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end
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end
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def move_forward
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@non_traites << @tokens[@i]
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@non_traites << @tokens[@i+1]
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@i += 2
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end
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def move_backwards
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@i -= 2
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@non_traites.pop(2)
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end
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def expr_nt
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@fait = false
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try_expr
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# binding.pry
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if !@fait && @i < @tokens.size-1
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if !@atteint || (!@tokens[@i].eql?('OR_OP') && !@tokens[@i].eql?('AND_OP'))
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move_forward
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else
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move_backwards
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end
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elsif !@fait
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move_backwards
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end
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end
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def expr
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@truc = EXPR.select { |key, value| value.include? @tokens[@i] }
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if(!@truc.keys[0].nil? && @truc.keys[0].include?('EXPR_NT'))
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expr_nt
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elsif(!@truc.keys[0].nil? && @truc.keys[0].include?('EXPR_T'))
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@truc = Hash[@truc.sort_by { |key, value| value.length }.reverse!]
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try_expr
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elsif !@non_traites.empty?
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move_backwards
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else
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raise 'BUG 2 !!!!!'
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end
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end
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def lexe
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if @i == @tokens.size-1
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@atteint = true
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end
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if !EXPR.select{|key, value| value.include? @tokens[@i]}.nil?
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expr
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elsif !@non_traites.empty?
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move_backwards
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else
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raise 'BUG !!!!'
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end
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end
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def testlexe
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cle, valeur = nil
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compteur = 0
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while @tokens.size != 1 && compteur < 1000
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lexe
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compteur += 1
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end
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return false unless @tokens. size == 1 && @tokens[0].eql?('EXPR')
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return true
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end
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end
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end
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end
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