26 lines
1 KiB
Elixir
26 lines
1 KiB
Elixir
defmodule InfixHelper do
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alias Gcode.Model.{Expr, Expr.Binary}
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use Gcode.Result
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@moduledoc false
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@type value :: boolean | integer | float | String.t()
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@spec cast_expression(value) :: Result.t(Expr.t())
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def cast_expression(value) when is_integer(value), do: Expr.Integer.init(value)
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def cast_expression(value) when is_float(value), do: Expr.Float.init(value)
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def cast_expression(value) when is_boolean(value), do: Expr.Boolean.init(value)
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def cast_expression(value) when is_binary(value), do: Expr.String.init(value)
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@spec it_evaluates_to(atom, value, value, any) :: Macro.t()
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defmacro it_evaluates_to(op, lhs, rhs, result) do
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quote do
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test "when the operator is `#{unquote(op)}` and the lhs is `#{inspect(unquote(lhs))}` and the rhs is `#{inspect(unquote(rhs))}` it is correct" do
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ok(lhs) = InfixHelper.cast_expression(unquote(lhs))
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ok(rhs) = InfixHelper.cast_expression(unquote(rhs))
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ok(bin) = Binary.init(unquote(op), lhs, rhs)
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assert unquote(result) = Expr.evaluate(bin)
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end
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end
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end
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end
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