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orb
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DSL for WebAssembly
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lib/orb/instruction/global_set.ex
defmodule Orb.Instruction.Global.Set do
@moduledoc false
defstruct push_type: nil, global_name: nil, value: nil
def new(type, global_name, value) when is_atom(type) do
%__MODULE__{
global_name: global_name,
value: Orb.Instruction.Const.wrap(type, value, "global.set $#{global_name}")
}
end
defimpl Orb.ToWat do
def to_wat(%Orb.Instruction.Global.Set{global_name: global_name, value: value}, indent) do
[
Orb.ToWat.to_wat(value, indent),
"\n",
indent,
"(global.set $",
to_string(global_name),
")"
]
end
end
defimpl Orb.ToWasm do
import Orb.Leb
def to_wasm(%Orb.Instruction.Global.Set{global_name: global_name, value: value}, context) do
global_index = Orb.ToWasm.Context.fetch_global_index!(context, global_name)
[
Orb.ToWasm.to_wasm(value, context),
[0x24, leb128_u(global_index)]
]
end
end
end