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@@ -3,11 +3,20 @@
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3
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require "chervil"
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4
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require "readline"
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5
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+def repl(env)
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+ begin
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+ while line = Readline.readline("> ", true)
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+ break if line == "(exit)"
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+ lexer = Chervil::Lexer.new(line)
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+ tree = Chervil::Parser.new(lexer).parse
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+ results = Chervil::Interpreter.new(tree, env).interpret
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+ results.each { |result| puts result unless result.nil? }
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+ end
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+ rescue Interrupt
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+ puts
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+ repl(env)
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+ end
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+end
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20
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env = Chervil::Env.new
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-while line = Readline.readline("> ", true)
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- lexer = Chervil::Lexer.new(line)
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- tree = Chervil::Parser.new(lexer).parse
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- results = Chervil::Interpreter.new(tree, env).interpret
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- results.each { |result| puts result unless result.nil? }
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-end
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+repl(env)
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