101 lines
3.0 KiB
Ruby
101 lines
3.0 KiB
Ruby
module Mom
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# MethodCompiler is used to generate Mom instructions for methods
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# and to instantiate the methods correctly.
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class MethodCompiler < CallableCompiler
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def initialize( method )
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super(method)
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end
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#include block_compilers constants
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def constants
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block_compilers.inject(@constants.dup){|all, compiler| all += compiler.constants}
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end
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def source_name
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"#{@callable.self_type.name}.#{@callable.name}"
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end
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def get_method
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@callable
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end
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# sometimes the method is used as source (tb reviewed)
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def source
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@callable
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end
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# drop down to risc
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def to_risc
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risc_comp = Risc::MethodCompiler.new(@callable , mom_instructions)
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instruction = mom_instructions.next
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while( instruction )
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raise "whats this a #{instruction}" unless instruction.is_a?(Mom::Instruction)
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#puts "adding mom #{instruction.to_s}:#{instruction.next.to_s}"
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instruction.to_risc( risc_comp )
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risc_comp.reset_regs
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#puts "adding risc #{risc.to_s}:#{risc.next.to_s}"
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instruction = instruction.next
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end
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risc_comp
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end
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# helper method for builtin mainly
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# the class_name is a symbol, which is resolved to the instance_type of that class
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#
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# return compiler_for_type with the resolved type
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#
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def self.compiler_for_class( class_name , method_name , args , frame )
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raise "create_method #{class_name}.#{class_name.class}" unless class_name.is_a? Symbol
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clazz = Parfait.object_space.get_class_by_name! class_name
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compiler_for_type( clazz.instance_type , method_name , args , frame)
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end
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def add_method_to( target )
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target.add_method( @callable )
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end
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def create_block(arg_type , frame_type)
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@callable.create_block(arg_type ,frame_type)
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end
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# create a method for the given type ( Parfait type object)
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# method_name is a Symbol
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# args a hash that will be converted to a type
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# the created method is set as the current and the given type too
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# return the compiler
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def self.compiler_for_type( type , method_name , args , frame)
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raise "create_method #{type.inspect} is not a Type" unless type.is_a? Parfait::Type
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raise "Args must be Type #{args}" unless args.is_a?(Parfait::Type)
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raise "create_method #{method_name}.#{method_name.class}" unless method_name.is_a? Symbol
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method = type.create_method( method_name , args , frame)
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self.new(method)
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end
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# determine how given name need to be accsessed.
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# For methods the options are args or frame
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def slot_type_for(name)
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if @callable.arguments_type.variable_index(name)
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type = :arguments
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else
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type = :frame
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end
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[type , name]
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end
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def add_block_compiler(compiler)
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@block_compilers << compiler
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end
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# return true or false if the given name is in scope (arg/local)
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def in_scope?(name)
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ret = true if @callable.arguments_type.variable_index(name)
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ret = @callable.frame_type.variable_index(name) unless ret
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ret
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end
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end
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end
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