43 lines
608 B
Io
43 lines
608 B
Io
add_fn := method(name, action,
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fns atPut(name, action)
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)
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add_fn("quit", block(
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should_quit = true
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))
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add_fn("clear", block(
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stack empty
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))
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add_fn("exec", block(
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doword(pop)
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))
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add_fn("quote", block(
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word := pop
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word = "'#{word}" interpolate
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push(word)
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))
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add_fn("exec_if_0", block(
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value := pop
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action := pop
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if(value == 0, doword(action))
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))
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add_fn("peek", block(
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depth := pop
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push(stack at(stack size - 1 - depth))
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))
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add_fn("deref", block(
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index := pop
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push(stack at(index))
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))
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add_fn("write", block(
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index := pop
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stack atPut(index, pop)
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))
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add_fn("size", block(
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push(stack size)
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))
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