Source/JavaScriptCore/generator/Checkpoints.rb

# Copyright (C) 2019 Apple Inc. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
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#
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class Checkpoint
    attr_reader :uses
    attr_reader :defs
    attr_reader :name
    attr_reader :index

    def initialize(name, index, tmps)
        @name = name
        @index = index
        @uses = tmps.filter { |(tmp, useDef)| useDef == :use }
        @defs = tmps.filter { |(tmp, useDef)| useDef == :define }
    end

    def liveness(namespace)
        EOF<--
    case #{namespace}::#{name}:
EOF
    end
end

class Checkpoints
    def initialize(opcode, tmps, checkpoints)
        @opcode = opcode
        @tmps = tmps
        @checkpoints = checkpoints.map_with_index { |(name, tmps), index| Checkpoint.new(name, index, tmps) }
    end

    def liveness
        @checkpoints.each do |checkpoint|

        end
        EOF<--
BitMap<maxNumTmps> tmpLivenessFor#{@opcode.capitalized_name}(uint8_t checkpoint)
{
    switch (checkpoint) {

    }
}
EOF
    end
end