docs: 补充注释与格式化
This commit is contained in:
@@ -3,10 +3,10 @@
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//! 函数:`emit_operator` 及各类 `emit_*_expression`。
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use crate::{is_side_effect_free, BinaryOperator, 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::module::Constant;
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use oxide_bytecode::opcode::OpCode;
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use oxide_ir::inst::Inst;
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use oxide_ir::operand::Operand;
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use oxide_parser::{ChainElement, Expression, LogicalOperator, SimpleAssignmentTarget, UnaryOperator, UpdateOperator};
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impl Emitter {
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@@ -16,11 +16,18 @@ impl Emitter {
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let obj_reg = self.emit_expression(&pin.right, ctx)?;
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let key_reg = self.emit_private_id_reg(pin.left.name.as_str(), ctx)?;
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let result_reg = ctx.alloc_reg();
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ctx.inst(Inst::new(OpCode::PRIVATE_BRAND_IN, Operand::Reg(result_reg), Operand::Reg(obj_reg), Operand::Reg(key_reg)));
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ctx.inst(Inst::new(
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OpCode::PRIVATE_BRAND_IN,
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Operand::Reg(result_reg),
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Operand::Reg(obj_reg),
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Operand::Reg(key_reg),
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));
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Ok(result_reg)
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}
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fn emit_binary_expression(&self, bin: &oxide_parser::BinaryExpression, ctx: &mut CompileCtx) -> Result<u32, String> {
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fn emit_binary_expression(
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&self, bin: &oxide_parser::BinaryExpression, ctx: &mut CompileCtx,
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) -> Result<u32, String> {
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let left = self.emit_expression(&bin.left, ctx)?;
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let right = self.emit_expression(&bin.right, ctx)?;
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let op = match bin.operator {
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@@ -67,7 +74,12 @@ impl Emitter {
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Expression::ComputedMemberExpression(member) => {
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let obj_reg = self.emit_expression(&member.object, ctx)?;
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let key_reg = self.emit_expression(&member.expression, ctx)?;
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ctx.inst(Inst::new(OpCode::DELETE_PROP_DYNAMIC, Operand::Reg(obj_reg), Operand::Reg(obj_reg), Operand::Reg(key_reg)));
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ctx.inst(Inst::new(
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OpCode::DELETE_PROP_DYNAMIC,
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Operand::Reg(obj_reg),
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Operand::Reg(obj_reg),
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Operand::Reg(key_reg),
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));
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Ok(obj_reg)
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}
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Expression::ChainExpression(chain) => {
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@@ -77,7 +89,12 @@ impl Emitter {
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let obj_reg = self.emit_expression(&member.object, ctx)?;
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if member.optional {
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let dup_reg = ctx.alloc_reg();
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ctx.inst(Inst::new(OpCode::LOAD_VAR, Operand::Reg(dup_reg), Operand::Reg(obj_reg), Operand::None));
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ctx.inst(Inst::new(
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OpCode::LOAD_VAR,
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Operand::Reg(dup_reg),
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Operand::Reg(obj_reg),
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Operand::None,
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));
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ctx.inst(Inst::jmp_if_nullish(dup_reg, short_label));
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}
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let prop_name = member.property.name.as_str();
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@@ -89,11 +106,21 @@ impl Emitter {
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let obj_reg = self.emit_expression(&member.object, ctx)?;
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if member.optional {
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let dup_reg = ctx.alloc_reg();
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ctx.inst(Inst::new(OpCode::LOAD_VAR, Operand::Reg(dup_reg), Operand::Reg(obj_reg), Operand::None));
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ctx.inst(Inst::new(
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OpCode::LOAD_VAR,
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Operand::Reg(dup_reg),
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Operand::Reg(obj_reg),
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Operand::None,
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));
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ctx.inst(Inst::jmp_if_nullish(dup_reg, short_label));
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}
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let key_reg = self.emit_expression(&member.expression, ctx)?;
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ctx.inst(Inst::new(OpCode::DELETE_PROP_DYNAMIC, Operand::Reg(obj_reg), Operand::Reg(obj_reg), Operand::Reg(key_reg)));
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ctx.inst(Inst::new(
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OpCode::DELETE_PROP_DYNAMIC,
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Operand::Reg(obj_reg),
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Operand::Reg(obj_reg),
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Operand::Reg(key_reg),
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));
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obj_reg
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}
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_ => return Err("invalid delete target".into()),
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@@ -150,13 +177,23 @@ impl Emitter {
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let cons_reg = self.emit_expression(&cond.consequent, ctx)?;
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let result_reg = ctx.alloc_reg();
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ctx.inst(Inst::new(OpCode::LOAD_VAR, Operand::Reg(result_reg), Operand::Reg(cons_reg), Operand::None));
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ctx.inst(Inst::new(
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OpCode::LOAD_VAR,
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Operand::Reg(result_reg),
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Operand::Reg(cons_reg),
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Operand::None,
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));
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ctx.inst(Inst::jmp(end_label));
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ctx.labels.set_label_pos(else_label, ctx.insts.len());
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let alt_reg = self.emit_expression(&cond.alternate, ctx)?;
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ctx.inst(Inst::new(OpCode::LOAD_VAR, Operand::Reg(result_reg), Operand::Reg(alt_reg), Operand::None));
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ctx.inst(Inst::new(
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OpCode::LOAD_VAR,
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Operand::Reg(result_reg),
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Operand::Reg(alt_reg),
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Operand::None,
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));
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ctx.labels.set_label_pos(end_label, ctx.insts.len());
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Ok(result_reg)
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@@ -220,13 +257,18 @@ impl Emitter {
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match &update.argument {
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SimpleAssignmentTarget::AssignmentTargetIdentifier(id) => {
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let name = id.name.as_str();
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// Check if this is an upvalue or captured cell reference
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// 判断目标是 upvalue 还是被捕获 cell
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let uv_idx = ctx.current_upvalue_captures.iter().position(|u| u.name == name);
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let captured_cell = ctx.captured_bindings.get(name).copied();
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if let Some(uv) = uv_idx {
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// Upvalue: LOAD_UPVALUE + CONST(1) + ADD/SUB + STORE_UPVALUE
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// upvalue:LOAD_UPVALUE + 常量 1 + ADD/SUB + STORE_UPVALUE
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let val_reg = ctx.alloc_reg();
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ctx.inst(Inst::new(OpCode::LOAD_UPVALUE, Operand::Reg(val_reg), Operand::Imm(uv as u16), Operand::None));
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ctx.inst(Inst::new(
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OpCode::LOAD_UPVALUE,
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Operand::Reg(val_reg),
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Operand::Imm(uv as u16),
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Operand::None,
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));
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let one_idx = ctx.add_constant(Constant::Int(1));
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let one_reg = ctx.alloc_reg();
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ctx.inst(Inst::load_const(Operand::Reg(one_reg), one_idx));
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@@ -236,15 +278,30 @@ impl Emitter {
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OpCode::SUB
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};
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ctx.inst(Inst::new(op, Operand::Reg(val_reg), Operand::Reg(val_reg), Operand::Reg(one_reg)));
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ctx.inst(Inst::new(OpCode::STORE_UPVALUE, Operand::None, Operand::Reg(val_reg), Operand::Imm(uv as u16)));
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ctx.inst(Inst::new(
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OpCode::STORE_UPVALUE,
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Operand::None,
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Operand::Reg(val_reg),
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Operand::Imm(uv as u16),
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));
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Ok(val_reg)
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} else if let Some(cell_idx) = captured_cell {
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// Captured cell: CELL_GET + CONST(1) + ADD/SUB + CELL_SET
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// 被捕获 cell:CELL_GET + 常量 1 + ADD/SUB + CELL_SET
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let val_reg = ctx.alloc_reg();
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if let Some((binding, _)) = ctx.scopes.symbols.lookup_any_binding(name) {
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ctx.inst(Inst::new(OpCode::CELL_GET, Operand::Reg(val_reg), Operand::Reg(binding.reg), Operand::Imm(cell_idx as u16)));
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ctx.inst(Inst::new(
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OpCode::CELL_GET,
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Operand::Reg(val_reg),
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Operand::Reg(binding.reg),
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Operand::Imm(cell_idx as u16),
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));
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} else {
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ctx.inst(Inst::new(OpCode::CELL_GET, Operand::Reg(val_reg), Operand::None, Operand::Imm(cell_idx as u16)));
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ctx.inst(Inst::new(
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OpCode::CELL_GET,
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Operand::Reg(val_reg),
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Operand::None,
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Operand::Imm(cell_idx as u16),
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));
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}
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let one_idx = ctx.add_constant(Constant::Int(1));
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let one_reg = ctx.alloc_reg();
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@@ -255,7 +312,12 @@ impl Emitter {
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OpCode::SUB
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};
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ctx.inst(Inst::new(op, Operand::Reg(val_reg), Operand::Reg(val_reg), Operand::Reg(one_reg)));
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ctx.inst(Inst::new(OpCode::CELL_SET, Operand::None, Operand::Reg(val_reg), Operand::Imm(cell_idx as u16)));
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ctx.inst(Inst::new(
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OpCode::CELL_SET,
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Operand::None,
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Operand::Reg(val_reg),
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Operand::Imm(cell_idx as u16),
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));
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Ok(val_reg)
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} else {
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let var_reg = ctx.lookup_or_global(name);
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