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17 lines
625 B
Rust
17 lines
625 B
Rust
//! `this` 表达式 emit：`emit_this_expression` 解析当前函数的 this 寄存器。
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use crate::{CompileCtx, Emitter};
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use oxide_ir::inst::Inst;
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use oxide_ir::operand::Operand;
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use oxide_bytecode::opcode::OpCode;
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impl Emitter {
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pub(crate) fn emit_this_expression(&self, ctx: &mut CompileCtx) -> Result<u8, String> {
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let r = ctx.alloc_reg();
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let src = ctx.static_block_this_reg.unwrap_or(254);
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let src_op = if src == 254 { Operand::This } else { Operand::Reg(src as u32) };
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ctx.inst(Inst::new(OpCode::LOAD_VAR, Operand::Reg(r as u32), src_op, Operand::None));
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Ok(r)
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}
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}
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