47 lines
1.3 KiB
Ruby
47 lines
1.3 KiB
Ruby
module Mom
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# A BlockCompiler is much like a MehtodCompiler, exept for blocks
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#
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class BlockCompiler < CallableCompiler
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attr_reader :block , :mom_instructions
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alias :block :callable
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def initialize( block , method)
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@method = method
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super(block)
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end
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def source_name
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"#{@method.self_type.name}.init"
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end
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def to_risc
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risc_compiler = Risc::BlockCompiler.new(@callable , @method , mom_instructions)
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instructions_to_risc(risc_compiler)
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#recursive blocks not done
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risc_compiler
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end
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# determine how given name need to be accsessed.
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# For blocks the options are args or frame
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# or then the methods arg or frame
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def slot_type_for(name)
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if index = @callable.arguments_type.variable_index(name)
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slot_def = ["arg#{index}".to_sym]
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elsif index = @callable.frame_type.variable_index(name)
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slot_def = ["local#{index}".to_sym]
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elsif index = @method.arguments_type.variable_index(name)
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slot_def = [:caller , :caller , "arg#{index}".to_sym]
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elsif index = @method.frame_type.variable_index(name)
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slot_def = [:caller ,:caller , "local#{index}".to_sym ]
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elsif
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raise "no variable #{name} , need to resolve at runtime"
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end
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return slot_def
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end
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end
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end
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