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37 lines
809 B
37 lines
809 B
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use crsn::asm::error::CrsnError;
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use crsn::asm::instr::Op;
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use crsn::asm::parse::arg_parser::ArgParser;
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use crsn::module::{ParseOpRes};
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use crate::defs::StackOp;
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pub(crate) fn parse(keyword: &str, mut args: ArgParser) -> Result<ParseOpRes<Op>, CrsnError> {
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Ok(ParseOpRes::ext(match keyword {
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"stack" => {
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StackOp::NewStack {
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dst: args.next_wr()?,
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}
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}
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"push" => {
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StackOp::Push {
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obj: args.next_rdobj()?,
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src: args.next_rd()?,
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}
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}
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"pop" => {
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StackOp::Pop {
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dst: args.next_wr()?,
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obj: args.next_rdobj()?,
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}
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}
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_other => {
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return Ok(ParseOpRes::Unknown(args));
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}
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}))
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}
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