42 lines
1.4 KiB
Rust
42 lines
1.4 KiB
Rust
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use crate::obj::prelude::*;
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#[derive(Debug, PartialEq)]
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pub enum Inst {
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/// Push a literal symbol object to the stack.
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PushSym(Sym),
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/// Pop a value from the stack, possibly into a local symbol.
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Pop(Option<Sym>),
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/// Pops a symbol value and an object reference.
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///
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/// This will get an attr from the object reference pointed to by the symbol.
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///
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/// If the object reference is `:__local__`, this instruction will push a local value.
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GetAttr,
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/// Pops an object reference, a symbol value, and another object reference.
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///
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/// This will set an attr of the second object ref to the first object ref, with the symbol
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/// value name.
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///
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/// If the given value is `:__local__`, this instruction will set a local value.
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SetAttr,
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/// Jump to a given address in the current function unconditionally.
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Jump(usize),
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/// Jump to a given address in the current function if the condition flag is true.
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///
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/// The condition flag may be set by an internal function.
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JumpTrue(usize),
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/// Pops the top item off of the stack, followed by the number of arguments supplied, and
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/// attempts to run the `__call__` attribute of the object.
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Call(usize),
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/// Pops the top value from the stack, and returns from the function, using the popped value as
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/// a return value.
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Return,
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}
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