refactor: 拆分 expression emit 分发逻辑
This commit is contained in:
爱特每羊队
@@ -0,0 +1,166 @@
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use super::*;
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impl Compiler {
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pub(in crate::emitter) fn emit_assignment_expression(
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&self, assign: &oxide_parser::AssignmentExpression, ctx: &mut CompileCtx,
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) -> Result<u8, String> {
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if let oxide_parser::AssignmentTarget::StaticMemberExpression(member) = &assign.left {
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if let Some(logical_op) = assign.operator.to_logical_operator() {
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let id = ctx.next_label_id();
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let store_label = Label::TernaryElse(id);
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let end_label = Label::TernaryEnd(id);
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let obj_reg = self.emit_expression(&member.object, ctx)?;
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let prop_name = member.property.name.as_str();
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let idx = ctx.add_constant(Constant::String(prop_name.to_string()));
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let key_reg = ctx.alloc_reg();
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ctx.emit_load_const(key_reg, idx);
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let result_reg = ctx.alloc_reg();
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ctx.emit(opcode::encode(OpCode::LOAD_VAR, result_reg, obj_reg, 0));
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ctx.emit(opcode::encode(OpCode::IC_GET_PROP, 0, result_reg, key_reg));
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ctx.emit(0);
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ctx.emit(0);
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ctx.emit(0);
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self.emit_logical_assign_test(logical_op, result_reg, store_label, end_label, ctx)?;
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let val_reg = self.emit_expression(&assign.right, ctx)?;
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ctx.emit(opcode::encode(OpCode::IC_SET_PROP, obj_reg, val_reg, key_reg));
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ctx.emit(0);
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ctx.emit(0);
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ctx.emit(0);
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ctx.emit(opcode::encode(OpCode::LOAD_VAR, result_reg, val_reg, 0));
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return Ok(result_reg);
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}
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let obj_reg = self.emit_expression(&member.object, ctx)?;
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let val_reg = self.emit_expression(&assign.right, ctx)?;
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let prop_name = member.property.name.as_str();
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let idx = ctx.add_constant(Constant::String(prop_name.to_string()));
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let key_reg = ctx.alloc_reg();
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ctx.emit_load_const(key_reg, idx);
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if assign.operator != AssignmentOperator::Assign {
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let op = match assign.operator {
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AssignmentOperator::Addition => OpCode::COMPOUND_MEMBER_ADD,
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AssignmentOperator::Subtraction => OpCode::COMPOUND_MEMBER_SUB,
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AssignmentOperator::Multiplication => OpCode::COMPOUND_MEMBER_MUL,
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AssignmentOperator::Division => OpCode::COMPOUND_MEMBER_DIV,
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AssignmentOperator::Remainder => OpCode::COMPOUND_MEMBER_MOD,
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AssignmentOperator::Exponential => OpCode::COMPOUND_MEMBER_EXP,
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_ => return Err(format!("compound assignment operator {:?} not supported", assign.operator)),
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};
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ctx.emit(opcode::encode(op, obj_reg, val_reg, key_reg));
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ctx.emit(0);
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ctx.emit(0);
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ctx.emit(0);
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Ok(val_reg)
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} else {
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ctx.emit(opcode::encode(OpCode::IC_SET_PROP, obj_reg, val_reg, key_reg));
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ctx.emit(0);
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ctx.emit(0);
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ctx.emit(0);
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Ok(val_reg)
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}
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} else if let oxide_parser::AssignmentTarget::ComputedMemberExpression(member) = &assign.left {
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if let Some(logical_op) = assign.operator.to_logical_operator() {
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let id = ctx.next_label_id();
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let store_label = Label::TernaryElse(id);
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let end_label = Label::TernaryEnd(id);
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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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let result_reg = ctx.alloc_reg();
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ctx.emit(opcode::encode(OpCode::GET_PROP_DYNAMIC, obj_reg, key_reg, result_reg));
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self.emit_logical_assign_test(logical_op, result_reg, store_label, end_label, ctx)?;
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let val_reg = self.emit_expression(&assign.right, ctx)?;
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ctx.emit(opcode::encode(OpCode::SET_PROP_DYNAMIC, obj_reg, key_reg, val_reg));
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ctx.emit(opcode::encode(OpCode::LOAD_VAR, result_reg, val_reg, 0));
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return Ok(result_reg);
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}
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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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let val_reg = self.emit_expression(&assign.right, ctx)?;
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ctx.emit(opcode::encode(OpCode::SET_PROP_DYNAMIC, obj_reg, key_reg, val_reg));
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Ok(val_reg)
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} else if let oxide_parser::AssignmentTarget::PrivateFieldExpression(member) = &assign.left {
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if assign.operator != AssignmentOperator::Assign {
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return Err("compound assignment to private fields not supported".into());
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}
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let obj_reg = self.emit_expression(&member.object, ctx)?;
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let val_reg = self.emit_expression(&assign.right, ctx)?;
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let key_reg = self.emit_private_id_reg(member.field.name.as_str(), ctx)?;
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ctx.emit(opcode::encode(OpCode::SET_PRIVATE, obj_reg, val_reg, key_reg));
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Ok(val_reg)
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} else if let oxide_parser::AssignmentTarget::AssignmentTargetIdentifier(id_ref) = &assign.left {
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if assign.operator != AssignmentOperator::Assign {
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if let Some(logical_op) = assign.operator.to_logical_operator() {
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let id = ctx.next_label_id();
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let store_label = Label::TernaryElse(id);
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let end_label = Label::TernaryEnd(id);
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let name = id_ref.name.as_str();
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let var_reg = ctx.lookup_or_global(name);
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let result_reg = ctx.alloc_reg();
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ctx.emit(opcode::encode(OpCode::LOAD_VAR, result_reg, var_reg, 0));
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self.emit_logical_assign_test(logical_op, result_reg, store_label, end_label, ctx)?;
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let val_reg = self.emit_expression(&assign.right, ctx)?;
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let is_const = ctx.lookup_const_flag(name);
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let const_flag = if is_const { 1 } else { 0 };
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ctx.emit(opcode::encode(OpCode::STORE_VAR, var_reg, val_reg, const_flag));
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ctx.emit(opcode::encode(OpCode::LOAD_VAR, result_reg, val_reg, 0));
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Ok(result_reg)
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} else if assign.operator == AssignmentOperator::Addition
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|| assign.operator == AssignmentOperator::Subtraction
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|| assign.operator == AssignmentOperator::Multiplication
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|| assign.operator == AssignmentOperator::Division
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|| assign.operator == AssignmentOperator::Remainder
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|| assign.operator == AssignmentOperator::Exponential
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|| assign.operator == AssignmentOperator::BitwiseAnd
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|| assign.operator == AssignmentOperator::BitwiseOR
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|| assign.operator == AssignmentOperator::BitwiseXOR
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|| assign.operator == AssignmentOperator::ShiftLeft
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|| assign.operator == AssignmentOperator::ShiftRight
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|| assign.operator == AssignmentOperator::ShiftRightZeroFill
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{
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let rhs = self.emit_expression(&assign.right, ctx)?;
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let name = id_ref.name.as_str();
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let var_reg = ctx.lookup_or_global(name);
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let op = match assign.operator {
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AssignmentOperator::Addition => OpCode::COMPOUND_ADD,
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AssignmentOperator::Subtraction => OpCode::COMPOUND_SUB,
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AssignmentOperator::Multiplication => OpCode::COMPOUND_MUL,
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AssignmentOperator::Division => OpCode::COMPOUND_DIV,
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AssignmentOperator::Remainder => OpCode::COMPOUND_MOD,
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AssignmentOperator::Exponential => OpCode::COMPOUND_EXP,
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AssignmentOperator::BitwiseAnd => OpCode::COMPOUND_AND,
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AssignmentOperator::BitwiseOR => OpCode::COMPOUND_OR,
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AssignmentOperator::BitwiseXOR => OpCode::COMPOUND_XOR,
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AssignmentOperator::ShiftLeft => OpCode::COMPOUND_SHL,
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AssignmentOperator::ShiftRight => OpCode::COMPOUND_SHR,
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AssignmentOperator::ShiftRightZeroFill => OpCode::COMPOUND_USHR,
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_ => return Err(format!("compound assignment operator {:?} not supported", assign.operator)),
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};
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ctx.emit(opcode::encode(op, var_reg, rhs, 0));
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Ok(var_reg)
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} else {
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Err(format!("compound assignment operator {:?} not supported", assign.operator))
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}
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} else {
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let val_reg = self.emit_expression(&assign.right, ctx)?;
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let name = id_ref.name.as_str();
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let var_reg = ctx.lookup_or_global(name);
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let is_const = ctx.lookup_const_flag(name);
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let const_flag = if is_const { 1 } else { 0 };
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ctx.emit(opcode::encode(OpCode::STORE_VAR, var_reg, val_reg, const_flag));
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Ok(val_reg)
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}
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} else if matches!(
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&assign.left,
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oxide_parser::AssignmentTarget::ArrayAssignmentTarget(_)
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| oxide_parser::AssignmentTarget::ObjectAssignmentTarget(_)
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) {
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if assign.operator != AssignmentOperator::Assign {
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return Err("compound destructuring assignment not supported".into());
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}
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let val_reg = self.emit_expression(&assign.right, ctx)?;
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self.emit_assign_target(&assign.left, val_reg, ctx)?;
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Ok(val_reg)
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} else {
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Err("assignment target not supported".into())
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}
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}
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}
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@@ -0,0 +1,97 @@
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use super::*;
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impl Compiler {
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pub(in crate::emitter) fn emit_call_expression(
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&self, call: &oxide_parser::CallExpression, ctx: &mut CompileCtx,
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) -> Result<u8, String> {
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if matches!(&call.callee, Expression::Super(_)) {
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if !ctx.in_derived_constructor {
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return Err("super() only supported in derived constructors".into());
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}
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let mut arg_regs = Vec::new();
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for arg in &call.arguments {
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if let Some(expr) = arg.as_expression() {
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arg_regs.push(self.emit_expression(expr, ctx)?);
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}
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}
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let first_arg_reg = if arg_regs.is_empty() { 0u8 } else { arg_regs[0] };
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let result_reg = ctx.alloc_reg();
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ctx.emit(opcode::encode(OpCode::SUPER_CALL, result_reg, first_arg_reg, 0));
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ctx.emit(arg_regs.len() as u32);
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if !ctx.after_super_inserted {
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if let Some(field_code) = ctx.after_super_insert.clone() {
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ctx.bytecode.extend(field_code);
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ctx.after_super_inserted = true;
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}
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}
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return Ok(result_reg);
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}
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let (callee_reg, this_reg) = match &call.callee {
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Expression::PrivateFieldExpression(member) => {
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let obj_reg = self.emit_expression(&member.object, ctx)?;
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let key_reg = self.emit_private_id_reg(member.field.name.as_str(), ctx)?;
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let callee_reg = ctx.alloc_reg();
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ctx.emit(opcode::encode(OpCode::GET_PRIVATE, callee_reg, obj_reg, key_reg));
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(callee_reg, obj_reg)
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}
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Expression::StaticMemberExpression(member) => {
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let is_super_member = matches!(&member.object, Expression::Super(_));
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let obj_reg = if is_super_member {
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let this_reg = ctx.alloc_reg();
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ctx.emit(opcode::encode(OpCode::LOAD_VAR, this_reg, 254, 0));
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this_reg
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} else {
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self.emit_expression(&member.object, ctx)?
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};
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let prop_name = member.property.name.as_str();
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let idx = ctx.add_constant(Constant::String(prop_name.to_string()));
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let key_reg = ctx.alloc_reg();
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ctx.emit_load_const(key_reg, idx);
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let callee_reg = ctx.alloc_reg();
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if is_super_member {
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if !ctx.in_instance_method && !ctx.in_static_method && !ctx.in_derived_constructor {
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return Err("super property only supported in class methods".into());
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}
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let op = if ctx.in_static_method {
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OpCode::SUPER_STATIC_GET_PROP
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} else {
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OpCode::SUPER_GET_PROP
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};
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ctx.emit(opcode::encode(op, callee_reg, obj_reg, key_reg));
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} else {
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ctx.emit(opcode::encode(OpCode::LOAD_VAR, callee_reg, obj_reg, 0));
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ctx.emit(opcode::encode(OpCode::IC_GET_PROP, 0, callee_reg, key_reg));
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ctx.emit(0);
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ctx.emit(0);
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ctx.emit(0);
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}
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(callee_reg, obj_reg)
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}
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_ => {
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let callee_reg = self.emit_expression(&call.callee, ctx)?;
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let this_idx = ctx.add_constant(Constant::Undefined);
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let this_reg = ctx.alloc_reg();
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ctx.emit_load_const(this_reg, this_idx);
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(callee_reg, this_reg)
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}
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};
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let mut arg_regs = Vec::new();
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for arg in &call.arguments {
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if let Some(expr) = arg.as_expression() {
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arg_regs.push(self.emit_expression(expr, ctx)?);
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}
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}
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let first_arg_reg = if arg_regs.is_empty() { 0u8 } else { arg_regs[0] };
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let op = match &call.callee {
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Expression::Identifier(ident) if ctx.is_builtin(ident.name.as_str()) => OpCode::CALL_NATIVE,
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_ => OpCode::CALL,
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};
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ctx.emit(opcode::encode(op, callee_reg, this_reg, first_arg_reg));
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ctx.emit(arg_regs.len() as u32);
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// Copy result from regs[0] into a dedicated register so multiple
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// call expressions don't overwrite each other.
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let result_reg = ctx.alloc_reg();
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ctx.emit(opcode::encode(OpCode::LOAD_VAR, result_reg, 0, 0));
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Ok(result_reg)
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}
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}
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@@ -0,0 +1,101 @@
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use super::*;
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impl Compiler {
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pub(in crate::emitter) fn emit_arrow_function_expression(
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&self, arrow: &oxide_parser::ArrowFunctionExpression, ctx: &mut CompileCtx,
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) -> Result<u8, String> {
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// Rest params not yet supported (D-06 placeholder)
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if let Some(_rest) = &arrow.params.rest {
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return Err("rest params in arrow functions not yet supported".into());
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}
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// Extract param names (same pattern as FunctionExpression)
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let mut param_names = Vec::new();
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for (idx, param) in arrow.params.items.iter().enumerate() {
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match ¶m.pattern {
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oxide_parser::BindingPattern::BindingIdentifier(bi) => {
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param_names.push(ParamSpec::Identifier(bi.name.to_string()));
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}
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pattern => {
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param_names.push(ParamSpec::Pattern {
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synthetic_name: format!("@@param_{idx}"),
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pattern,
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});
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}
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}
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}
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// Expression body: pass body statements directly with is_expression_body=true.
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// Statement body: pass body statements with is_expression_body=false.
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let body_stmts = &arrow.body.statements;
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let is_expr_body = arrow.expression;
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let mut sub_module = self.compile_function_body(¶m_names, body_stmts, ctx, is_expr_body, true)?;
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sub_module.is_arrow = true;
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ctx.sub_modules.push(sub_module);
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// 1-indexed: 0 = no sub_module (sentinel)
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let sub_idx = ctx.sub_modules.len() as u32;
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let const_idx = ctx.add_constant(Constant::BytecodeFunc(sub_idx));
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let r = ctx.alloc_reg();
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ctx.emit_load_const(r, const_idx);
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Ok(r)
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}
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pub(in crate::emitter) fn emit_function_expression(
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&self, fe: &oxide_parser::Function, ctx: &mut CompileCtx,
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) -> Result<u8, String> {
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// FunctionExpression: compile body, emit LOAD_CONST(BytecodeFunc)
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let mut param_names = Vec::new();
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for (idx, param) in fe.params.items.iter().enumerate() {
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match ¶m.pattern {
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oxide_parser::BindingPattern::BindingIdentifier(bi) => {
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param_names.push(ParamSpec::Identifier(bi.name.to_string()));
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}
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pattern => {
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param_names.push(ParamSpec::Pattern {
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synthetic_name: format!("@@param_{idx}"),
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pattern,
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});
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}
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}
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}
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let body_stmts: &[Statement] = if let Some(body) = &fe.body { &body.statements } else { &[] };
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let mut sub_module = self.compile_function_body(¶m_names, body_stmts, ctx, false, false)?;
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if let Some(id) = &fe.id {
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sub_module.function_name = Some(id.name.to_string());
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}
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ctx.sub_modules.push(sub_module);
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// 1-indexed: 0 = no sub_module (sentinel)
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let sub_idx = ctx.sub_modules.len() as u32;
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let const_idx = ctx.add_constant(Constant::BytecodeFunc(sub_idx));
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let r = ctx.alloc_reg();
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ctx.emit_load_const(r, const_idx);
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Ok(r)
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}
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pub(in crate::emitter) fn emit_class_expression(&self, class: &Class, ctx: &mut CompileCtx) -> Result<u8, String> {
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self.emit_class(class, ctx)
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}
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pub(in crate::emitter) fn emit_new_expression(
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&self, ne: &oxide_parser::NewExpression, ctx: &mut CompileCtx,
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) -> Result<u8, String> {
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let constructor_reg = self.emit_expression(&ne.callee, ctx)?;
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let mut arg_regs = Vec::new();
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for arg in &ne.arguments {
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if let Some(expr) = arg.as_expression() {
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arg_regs.push(self.emit_expression(expr, ctx)?);
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}
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}
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let first_arg_reg = if arg_regs.is_empty() { 0u8 } else { arg_regs[0] };
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let r = ctx.alloc_reg();
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ctx.emit(opcode::encode(OpCode::NEW_EXPRESSION, r, constructor_reg, first_arg_reg));
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ctx.emit(arg_regs.len() as u32);
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Ok(r)
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}
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}
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@@ -0,0 +1,91 @@
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use super::*;
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impl Compiler {
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pub(in crate::emitter) fn emit_numeric_literal_expression(
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&self, n: &oxide_parser::NumericLiteral, ctx: &mut CompileCtx,
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) -> Result<u8, String> {
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let idx = if is_int_literal(n.value) {
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ctx.add_constant(Constant::Int(n.value as i32))
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} else {
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ctx.add_constant(Constant::Number(n.value))
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};
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let r = ctx.alloc_reg();
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ctx.emit_load_const(r, idx);
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Ok(r)
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}
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pub(in crate::emitter) fn emit_string_literal_expression(
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&self, s: &oxide_parser::StringLiteral, ctx: &mut CompileCtx,
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) -> Result<u8, String> {
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let idx = ctx.add_constant(Constant::String(s.value.to_string()));
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let r = ctx.alloc_reg();
|
||||
ctx.emit_load_const(r, idx);
|
||||
Ok(r)
|
||||
}
|
||||
|
||||
pub(in crate::emitter) fn emit_boolean_literal_expression(
|
||||
&self, b: &oxide_parser::BooleanLiteral, ctx: &mut CompileCtx,
|
||||
) -> Result<u8, String> {
|
||||
let idx = ctx.add_constant(Constant::Boolean(b.value));
|
||||
let r = ctx.alloc_reg();
|
||||
ctx.emit_load_const(r, idx);
|
||||
Ok(r)
|
||||
}
|
||||
|
||||
pub(in crate::emitter) fn emit_null_literal_expression(&self, ctx: &mut CompileCtx) -> Result<u8, String> {
|
||||
let idx = ctx.add_constant(Constant::Null);
|
||||
let r = ctx.alloc_reg();
|
||||
ctx.emit_load_const(r, idx);
|
||||
Ok(r)
|
||||
}
|
||||
|
||||
pub(in crate::emitter) fn emit_identifier_expression(
|
||||
&self, ident: &oxide_parser::IdentifierReference, ctx: &mut CompileCtx,
|
||||
) -> Result<u8, String> {
|
||||
let var_reg = ctx.lookup_or_builtin(ident.name.as_str())?;
|
||||
let r = ctx.alloc_reg();
|
||||
ctx.emit(opcode::encode(OpCode::LOAD_VAR, r, var_reg, 0));
|
||||
Ok(r)
|
||||
}
|
||||
|
||||
pub(in crate::emitter) fn emit_parenthesized_expression(
|
||||
&self, p: &oxide_parser::ParenthesizedExpression, ctx: &mut CompileCtx,
|
||||
) -> Result<u8, String> {
|
||||
self.emit_expression(&p.expression, ctx)
|
||||
}
|
||||
|
||||
pub(in crate::emitter) fn emit_this_expression(&self, ctx: &mut CompileCtx) -> Result<u8, String> {
|
||||
let r = ctx.alloc_reg();
|
||||
let src = ctx.static_block_this_reg.unwrap_or(254);
|
||||
ctx.emit(opcode::encode(OpCode::LOAD_VAR, r, src, 0));
|
||||
Ok(r)
|
||||
}
|
||||
|
||||
pub(in crate::emitter) fn emit_reg_exp_literal_expression(
|
||||
&self, lit: &oxide_parser::RegExpLiteral, ctx: &mut CompileCtx,
|
||||
) -> Result<u8, String> {
|
||||
if let Some(raw) = &lit.raw {
|
||||
let raw_str = raw.to_string();
|
||||
if raw_str.len() >= 2 && raw_str.starts_with('/') {
|
||||
let last_slash = raw_str.rfind('/').unwrap_or(raw_str.len() - 1);
|
||||
let pattern = &raw_str[1..last_slash];
|
||||
let flags = &raw_str[last_slash + 1..];
|
||||
let ci = ctx.add_constant(Constant::RegExp(pattern.to_string(), flags.to_string()));
|
||||
let r = ctx.alloc_reg();
|
||||
ctx.emit_load_const(r, ci);
|
||||
Ok(r)
|
||||
} else {
|
||||
Err(format!("unsupported regexp literal: {:?}", lit))
|
||||
}
|
||||
} else {
|
||||
Err(format!("unsupported regexp literal: {:?}", lit))
|
||||
}
|
||||
}
|
||||
|
||||
pub(in crate::emitter) fn emit_unsupported_expression(
|
||||
&self, expr: &Expression, ctx: &mut CompileCtx,
|
||||
) -> Result<u8, String> {
|
||||
let _ = ctx;
|
||||
Err(format!("unsupported expression type: {:?}", expr))
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,75 @@
|
||||
use super::*;
|
||||
|
||||
impl Compiler {
|
||||
pub(in crate::emitter) fn emit_static_member_expression(
|
||||
&self, member: &oxide_parser::StaticMemberExpression, ctx: &mut CompileCtx,
|
||||
) -> Result<u8, String> {
|
||||
if matches!(&member.object, Expression::Super(_)) {
|
||||
if !ctx.in_instance_method && !ctx.in_static_method && !ctx.in_derived_constructor {
|
||||
return Err("super property only supported in class methods".into());
|
||||
}
|
||||
let prop_name = member.property.name.as_str();
|
||||
let idx = ctx.add_constant(Constant::String(prop_name.to_string()));
|
||||
let key_reg = ctx.alloc_reg();
|
||||
ctx.emit_load_const(key_reg, idx);
|
||||
let this_reg = ctx.alloc_reg();
|
||||
ctx.emit(opcode::encode(OpCode::LOAD_VAR, this_reg, 254, 0));
|
||||
let result_reg = ctx.alloc_reg();
|
||||
let op = if ctx.in_static_method {
|
||||
OpCode::SUPER_STATIC_GET_PROP
|
||||
} else {
|
||||
OpCode::SUPER_GET_PROP
|
||||
};
|
||||
ctx.emit(opcode::encode(op, result_reg, this_reg, key_reg));
|
||||
return Ok(result_reg);
|
||||
}
|
||||
let obj_reg = self.emit_expression(&member.object, ctx)?;
|
||||
let prop_name = member.property.name.as_str();
|
||||
let idx = ctx.add_constant(Constant::String(prop_name.to_string()));
|
||||
let key_reg = ctx.alloc_reg();
|
||||
ctx.emit(opcode::encode(OpCode::LOAD_CONST, key_reg, (idx & 0xFF) as u8, ((idx >> 8) & 0xFF) as u8));
|
||||
ctx.emit(opcode::encode(OpCode::IC_GET_PROP, 0, obj_reg, key_reg));
|
||||
ctx.emit(0);
|
||||
ctx.emit(0);
|
||||
ctx.emit(0);
|
||||
Ok(obj_reg)
|
||||
}
|
||||
|
||||
pub(in crate::emitter) fn emit_computed_member_expression(
|
||||
&self, member: &oxide_parser::ComputedMemberExpression, ctx: &mut CompileCtx,
|
||||
) -> Result<u8, String> {
|
||||
let obj_reg = self.emit_expression(&member.object, ctx)?;
|
||||
let key_reg = self.emit_expression(&member.expression, ctx)?;
|
||||
let r = ctx.alloc_reg();
|
||||
ctx.emit(opcode::encode(OpCode::GET_PROP_DYNAMIC, obj_reg, key_reg, r));
|
||||
Ok(r)
|
||||
}
|
||||
|
||||
pub(in crate::emitter) fn emit_private_field_expression(
|
||||
&self, member: &oxide_parser::PrivateFieldExpression, ctx: &mut CompileCtx,
|
||||
) -> Result<u8, String> {
|
||||
let obj_reg = self.emit_expression(&member.object, ctx)?;
|
||||
let key_reg = self.emit_private_id_reg(member.field.name.as_str(), ctx)?;
|
||||
let r = ctx.alloc_reg();
|
||||
ctx.emit(opcode::encode(OpCode::GET_PRIVATE, r, obj_reg, key_reg));
|
||||
Ok(r)
|
||||
}
|
||||
|
||||
pub(in crate::emitter) fn emit_chain_expression(
|
||||
&self, chain: &oxide_parser::ChainExpression, ctx: &mut CompileCtx,
|
||||
) -> Result<u8, String> {
|
||||
let id = ctx.next_label_id();
|
||||
let short_label = Label::TernaryElse(id);
|
||||
let end_label = Label::TernaryEnd(id);
|
||||
let value_reg = self.emit_chain_element(&chain.expression, Some(short_label), ctx)?;
|
||||
let result_reg = ctx.alloc_reg();
|
||||
ctx.emit(opcode::encode(OpCode::LOAD_VAR, result_reg, value_reg, 0));
|
||||
let end_pos = ctx.resolve_label(end_label)?;
|
||||
let offset = (end_pos as isize) - (ctx.bytecode.len() as isize);
|
||||
let offset = ctx.checked_jump_offset(offset);
|
||||
ctx.emit(opcode::encode_jmp(offset));
|
||||
let undefined_idx = ctx.add_constant(Constant::Undefined);
|
||||
ctx.emit_load_const(result_reg, undefined_idx);
|
||||
Ok(result_reg)
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,10 @@
|
||||
use super::*;
|
||||
|
||||
mod assignment;
|
||||
mod call;
|
||||
mod function;
|
||||
mod literal;
|
||||
mod member;
|
||||
mod object;
|
||||
mod operator;
|
||||
mod template;
|
||||
@@ -0,0 +1,76 @@
|
||||
use super::*;
|
||||
|
||||
impl Compiler {
|
||||
pub(in crate::emitter) fn emit_object_expression(
|
||||
&self, obj: &oxide_parser::ObjectExpression, ctx: &mut CompileCtx,
|
||||
) -> Result<u8, String> {
|
||||
let obj_reg = ctx.alloc_reg();
|
||||
ctx.emit(opcode::encode(OpCode::NEW_OBJECT, obj_reg, 0, 0));
|
||||
let prop_checkpoint = ctx.reg_checkpoint();
|
||||
for prop in &obj.properties {
|
||||
let oxide_parser::ObjectPropertyKind::ObjectProperty(p) = prop else {
|
||||
return Err("spread properties not yet supported".into());
|
||||
};
|
||||
let prop_name = match &p.key {
|
||||
oxide_parser::PropertyKey::StaticIdentifier(ident) => ident.name.as_str().to_string(),
|
||||
oxide_parser::PropertyKey::StringLiteral(s) => s.value.to_string(),
|
||||
_ => return Err("unsupported object property key type".into()),
|
||||
};
|
||||
match p.kind {
|
||||
PropertyKind::Get | PropertyKind::Set => {
|
||||
let accessor_reg = self.emit_expression(&p.value, ctx)?;
|
||||
if let Some(sub_mod) = ctx.sub_modules.last_mut() {
|
||||
sub_mod.function_name = Some(prop_name.to_string());
|
||||
}
|
||||
let undef_reg = self.emit_undefined(ctx);
|
||||
let (get_reg, set_reg) = if p.kind == PropertyKind::Get {
|
||||
(accessor_reg, undef_reg)
|
||||
} else {
|
||||
(undef_reg, accessor_reg)
|
||||
};
|
||||
let idx = ctx.add_constant(Constant::String(prop_name.to_string()));
|
||||
ctx.emit(opcode::encode(OpCode::DEFINE_ACCESSOR, obj_reg, get_reg, set_reg));
|
||||
ctx.emit(idx as u32);
|
||||
ctx.restore_reg_checkpoint(prop_checkpoint);
|
||||
}
|
||||
_ => {
|
||||
let idx = ctx.add_constant(Constant::String(prop_name.to_string()));
|
||||
let key_reg = ctx.alloc_reg();
|
||||
ctx.emit_load_const(key_reg, idx);
|
||||
let val_reg = self.emit_expression(&p.value, ctx)?;
|
||||
// Name inference (D-04): if property value is an arrow function,
|
||||
// set the compiled sub_module's function_name to the property key.
|
||||
if matches!(&p.value, Expression::ArrowFunctionExpression(_)) {
|
||||
if let Some(sub_mod) = ctx.sub_modules.last_mut() {
|
||||
sub_mod.function_name = Some(prop_name.to_string());
|
||||
}
|
||||
}
|
||||
ctx.emit(opcode::encode(OpCode::SET_PROP, obj_reg, val_reg, key_reg));
|
||||
ctx.restore_reg_checkpoint(prop_checkpoint);
|
||||
}
|
||||
}
|
||||
}
|
||||
Ok(obj_reg)
|
||||
}
|
||||
|
||||
pub(in crate::emitter) fn emit_array_expression(
|
||||
&self, arr: &oxide_parser::ArrayExpression, ctx: &mut CompileCtx,
|
||||
) -> Result<u8, String> {
|
||||
let arr_reg = ctx.alloc_reg();
|
||||
let n = arr.elements.len() as u16;
|
||||
ctx.emit(opcode::encode(OpCode::NEW_ARRAY, arr_reg, (n & 0xFF) as u8, ((n >> 8) & 0xFF) as u8));
|
||||
let elem_checkpoint = ctx.reg_checkpoint();
|
||||
for (i, elem) in arr.elements.iter().enumerate() {
|
||||
let Some(e) = elem.as_expression() else {
|
||||
return Err("spread not supported".into());
|
||||
};
|
||||
let val_reg = self.emit_expression(e, ctx)?;
|
||||
let idx_reg = ctx.alloc_reg();
|
||||
let idx = ctx.add_constant(Constant::Int(i as i32));
|
||||
ctx.emit_load_const(idx_reg, idx);
|
||||
ctx.emit(opcode::encode(OpCode::SET_ELEM, arr_reg, idx_reg, val_reg));
|
||||
ctx.restore_reg_checkpoint(elem_checkpoint);
|
||||
}
|
||||
Ok(arr_reg)
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,307 @@
|
||||
use super::*;
|
||||
|
||||
impl Compiler {
|
||||
pub(in crate::emitter) fn emit_private_in_expression(
|
||||
&self, pin: &oxide_parser::PrivateInExpression, ctx: &mut CompileCtx,
|
||||
) -> Result<u8, String> {
|
||||
let obj_reg = self.emit_expression(&pin.right, ctx)?;
|
||||
let key_reg = self.emit_private_id_reg(pin.left.name.as_str(), ctx)?;
|
||||
let result_reg = ctx.alloc_reg();
|
||||
ctx.emit(opcode::encode(OpCode::PRIVATE_BRAND_IN, result_reg, obj_reg, key_reg));
|
||||
Ok(result_reg)
|
||||
}
|
||||
|
||||
pub(in crate::emitter) fn emit_binary_expression(
|
||||
&self, bin: &oxide_parser::BinaryExpression, ctx: &mut CompileCtx,
|
||||
) -> Result<u8, String> {
|
||||
let checkpoint = ctx.reg_checkpoint();
|
||||
let left = self.emit_expression(&bin.left, ctx)?;
|
||||
let right = self.emit_expression(&bin.right, ctx)?;
|
||||
let op = match bin.operator {
|
||||
BinaryOperator::Addition => OpCode::ADD,
|
||||
BinaryOperator::Subtraction => OpCode::SUB,
|
||||
BinaryOperator::Multiplication => OpCode::MUL,
|
||||
BinaryOperator::Division => OpCode::DIV,
|
||||
BinaryOperator::Remainder => OpCode::MOD,
|
||||
BinaryOperator::BitwiseAnd => OpCode::BIT_AND,
|
||||
BinaryOperator::BitwiseOR => OpCode::BIT_OR,
|
||||
BinaryOperator::BitwiseXOR => OpCode::BIT_XOR,
|
||||
BinaryOperator::ShiftLeft => OpCode::SHL,
|
||||
BinaryOperator::ShiftRight => OpCode::SHR,
|
||||
BinaryOperator::ShiftRightZeroFill => OpCode::USHR,
|
||||
BinaryOperator::Equality => OpCode::EQ,
|
||||
BinaryOperator::Inequality => OpCode::NEQ,
|
||||
BinaryOperator::LessThan => OpCode::LT,
|
||||
BinaryOperator::GreaterThan => OpCode::GT,
|
||||
BinaryOperator::LessEqualThan => OpCode::LTE,
|
||||
BinaryOperator::GreaterEqualThan => OpCode::GTE,
|
||||
BinaryOperator::In => OpCode::IN,
|
||||
BinaryOperator::Instanceof => OpCode::INSTANCEOF,
|
||||
BinaryOperator::StrictEquality => OpCode::STRICT_EQ,
|
||||
BinaryOperator::StrictInequality => OpCode::STRICT_NEQ,
|
||||
_ => return Err(format!("unsupported binary operator: {:?}", bin.operator)),
|
||||
};
|
||||
ctx.emit(opcode::encode(op, left, left, right));
|
||||
if is_side_effect_free(&bin.left) && is_side_effect_free(&bin.right) {
|
||||
ctx.restore_reg_checkpoint(checkpoint.saturating_add(1).max(left.saturating_add(1)));
|
||||
}
|
||||
Ok(left)
|
||||
}
|
||||
|
||||
pub(in crate::emitter) fn emit_unary_expression(
|
||||
&self, un: &oxide_parser::UnaryExpression, ctx: &mut CompileCtx,
|
||||
) -> Result<u8, String> {
|
||||
if matches!(un.operator, UnaryOperator::Delete) {
|
||||
return match &un.argument {
|
||||
Expression::Identifier(_) => {
|
||||
Err("SyntaxError: delete of an unqualified identifier in strict mode".into())
|
||||
}
|
||||
Expression::StaticMemberExpression(member) => {
|
||||
let obj_reg = self.emit_expression(&member.object, ctx)?;
|
||||
let prop_name = member.property.name.as_str();
|
||||
let const_idx = ctx.add_constant(Constant::String(prop_name.to_string()));
|
||||
ctx.emit(opcode::encode(OpCode::DELETE_PROP_STATIC, obj_reg, obj_reg, 0));
|
||||
ctx.emit(const_idx as u32);
|
||||
Ok(obj_reg)
|
||||
}
|
||||
Expression::ComputedMemberExpression(member) => {
|
||||
let obj_reg = self.emit_expression(&member.object, ctx)?;
|
||||
let key_reg = self.emit_expression(&member.expression, ctx)?;
|
||||
ctx.emit(opcode::encode(OpCode::DELETE_PROP_DYNAMIC, obj_reg, obj_reg, key_reg));
|
||||
Ok(obj_reg)
|
||||
}
|
||||
Expression::ChainExpression(chain) => {
|
||||
let mut nullish_jumps = Vec::new();
|
||||
let result_reg = match &chain.expression {
|
||||
ChainElement::StaticMemberExpression(member) => {
|
||||
let obj_reg = self.emit_expression(&member.object, ctx)?;
|
||||
if member.optional {
|
||||
let dup_reg = ctx.alloc_reg();
|
||||
ctx.emit(opcode::encode(OpCode::LOAD_VAR, dup_reg, obj_reg, 0));
|
||||
let jump_pos = ctx.bytecode.len();
|
||||
ctx.emit(opcode::encode_jmp_if_nullish(dup_reg, 0));
|
||||
nullish_jumps.push(jump_pos);
|
||||
}
|
||||
let prop_name = member.property.name.as_str();
|
||||
let const_idx = ctx.add_constant(Constant::String(prop_name.to_string()));
|
||||
ctx.emit(opcode::encode(OpCode::DELETE_PROP_STATIC, obj_reg, obj_reg, 0));
|
||||
ctx.emit(const_idx as u32);
|
||||
obj_reg
|
||||
}
|
||||
ChainElement::ComputedMemberExpression(member) => {
|
||||
let obj_reg = self.emit_expression(&member.object, ctx)?;
|
||||
if member.optional {
|
||||
let dup_reg = ctx.alloc_reg();
|
||||
ctx.emit(opcode::encode(OpCode::LOAD_VAR, dup_reg, obj_reg, 0));
|
||||
let jump_pos = ctx.bytecode.len();
|
||||
ctx.emit(opcode::encode_jmp_if_nullish(dup_reg, 0));
|
||||
nullish_jumps.push(jump_pos);
|
||||
}
|
||||
let key_reg = self.emit_expression(&member.expression, ctx)?;
|
||||
ctx.emit(opcode::encode(OpCode::DELETE_PROP_DYNAMIC, obj_reg, obj_reg, key_reg));
|
||||
obj_reg
|
||||
}
|
||||
_ => return Err("invalid delete target".into()),
|
||||
};
|
||||
let end_jump_pos = ctx.bytecode.len();
|
||||
ctx.emit(opcode::encode_jmp(0));
|
||||
let short_pos = ctx.bytecode.len();
|
||||
for jump_pos in nullish_jumps {
|
||||
let offset = (short_pos as isize) - (jump_pos as isize);
|
||||
let instr = ctx.bytecode[jump_pos];
|
||||
let rd = opcode::rd(instr);
|
||||
let offset = ctx.checked_jump_offset(offset);
|
||||
ctx.bytecode[jump_pos] = opcode::encode_jmp_if_nullish(rd, offset);
|
||||
}
|
||||
let true_idx = ctx.add_constant(Constant::Boolean(true));
|
||||
ctx.emit_load_const(result_reg, true_idx);
|
||||
let end_pos = ctx.bytecode.len();
|
||||
let offset = (end_pos as isize) - (end_jump_pos as isize);
|
||||
let offset = ctx.checked_jump_offset(offset);
|
||||
ctx.bytecode[end_jump_pos] = opcode::encode_jmp(offset);
|
||||
Ok(result_reg)
|
||||
}
|
||||
_ => Err("invalid delete target".into()),
|
||||
};
|
||||
}
|
||||
let arg = self.emit_expression(&un.argument, ctx)?;
|
||||
match un.operator {
|
||||
UnaryOperator::UnaryNegation => {
|
||||
ctx.emit(opcode::encode(OpCode::NEG, arg, arg, 0));
|
||||
Ok(arg)
|
||||
}
|
||||
UnaryOperator::Typeof => {
|
||||
ctx.emit(opcode::encode(OpCode::TYPEOF, arg, arg, 0));
|
||||
Ok(arg)
|
||||
}
|
||||
UnaryOperator::Void => {
|
||||
ctx.emit(opcode::encode(OpCode::VOID, arg, arg, 0));
|
||||
Ok(arg)
|
||||
}
|
||||
UnaryOperator::LogicalNot => {
|
||||
ctx.emit(opcode::encode(OpCode::NOT, arg, arg, 0));
|
||||
Ok(arg)
|
||||
}
|
||||
UnaryOperator::BitwiseNot => {
|
||||
ctx.emit(opcode::encode(OpCode::BIT_NOT, arg, arg, 0));
|
||||
Ok(arg)
|
||||
}
|
||||
UnaryOperator::UnaryPlus => {
|
||||
ctx.emit(opcode::encode(OpCode::UNARY_PLUS, arg, arg, 0));
|
||||
Ok(arg)
|
||||
}
|
||||
UnaryOperator::Delete => Err("invalid delete target".into()),
|
||||
}
|
||||
}
|
||||
|
||||
pub(in crate::emitter) fn emit_conditional_expression(
|
||||
&self, cond: &oxide_parser::ConditionalExpression, ctx: &mut CompileCtx,
|
||||
) -> Result<u8, String> {
|
||||
let id = ctx.next_label_id();
|
||||
let else_label = Label::TernaryElse(id);
|
||||
let end_label = Label::TernaryEnd(id);
|
||||
|
||||
let test_reg = self.emit_expression(&cond.test, ctx)?;
|
||||
let else_pos = ctx.resolve_label(else_label)?;
|
||||
let end_pos = ctx.resolve_label(end_label)?;
|
||||
|
||||
let offset = (else_pos as isize) - (ctx.bytecode.len() as isize);
|
||||
let offset = ctx.checked_jump_offset(offset);
|
||||
ctx.emit(opcode::encode_jmp_if_false(test_reg, offset));
|
||||
|
||||
let cons_reg = self.emit_expression(&cond.consequent, ctx)?;
|
||||
let result_reg = ctx.alloc_reg();
|
||||
ctx.emit(opcode::encode(OpCode::LOAD_VAR, result_reg, cons_reg, 0));
|
||||
|
||||
let offset = (end_pos as isize) - (ctx.bytecode.len() as isize);
|
||||
let offset = ctx.checked_jump_offset(offset);
|
||||
ctx.emit(opcode::encode_jmp(offset));
|
||||
|
||||
let alt_reg = self.emit_expression(&cond.alternate, ctx)?;
|
||||
ctx.emit(opcode::encode(OpCode::LOAD_VAR, result_reg, alt_reg, 0));
|
||||
|
||||
Ok(result_reg)
|
||||
}
|
||||
|
||||
pub(in crate::emitter) fn emit_logical_expression(
|
||||
&self, log: &oxide_parser::LogicalExpression, ctx: &mut CompileCtx,
|
||||
) -> Result<u8, String> {
|
||||
use oxide_parser::LogicalOperator;
|
||||
let left_reg = self.emit_expression(&log.left, ctx)?;
|
||||
|
||||
if is_side_effect_free(&log.left) && is_side_effect_free(&log.right) {
|
||||
let right_reg = self.emit_expression(&log.right, ctx)?;
|
||||
let r = ctx.alloc_reg();
|
||||
let op = match log.operator {
|
||||
LogicalOperator::And => OpCode::AND,
|
||||
LogicalOperator::Or => OpCode::OR,
|
||||
LogicalOperator::Coalesce => OpCode::NULLISH,
|
||||
};
|
||||
ctx.emit(opcode::encode(op, r, left_reg, right_reg));
|
||||
return Ok(r);
|
||||
}
|
||||
|
||||
if matches!(log.operator, LogicalOperator::Coalesce) {
|
||||
let dup_reg = ctx.alloc_reg();
|
||||
ctx.emit(opcode::encode(OpCode::LOAD_VAR, dup_reg, left_reg, 0));
|
||||
let nullish_jump_pos = ctx.bytecode.len();
|
||||
ctx.emit(opcode::encode_jmp_if_nullish(dup_reg, 0));
|
||||
let end_jump_pos = ctx.bytecode.len();
|
||||
ctx.emit(opcode::encode_jmp(0));
|
||||
let rhs_pos = ctx.bytecode.len();
|
||||
let right_reg = self.emit_expression(&log.right, ctx)?;
|
||||
ctx.emit(opcode::encode(OpCode::LOAD_VAR, dup_reg, right_reg, 0));
|
||||
let end_pos = ctx.bytecode.len();
|
||||
let offset = (rhs_pos as isize) - (nullish_jump_pos as isize);
|
||||
let offset = ctx.checked_jump_offset(offset);
|
||||
ctx.bytecode[nullish_jump_pos] = opcode::encode_jmp_if_nullish(dup_reg, offset);
|
||||
let offset = (end_pos as isize) - (end_jump_pos as isize);
|
||||
let offset = ctx.checked_jump_offset(offset);
|
||||
ctx.bytecode[end_jump_pos] = opcode::encode_jmp(offset);
|
||||
return Ok(dup_reg);
|
||||
}
|
||||
|
||||
let id = ctx.next_label_id();
|
||||
let skip_label = match log.operator {
|
||||
LogicalOperator::And => Label::TernaryEnd(id),
|
||||
LogicalOperator::Or => Label::TernaryElse(id),
|
||||
LogicalOperator::Coalesce => return Err("invalid logical operator dispatch".into()),
|
||||
};
|
||||
let skip_pos = ctx.resolve_label(skip_label)?;
|
||||
|
||||
let dup_reg = ctx.alloc_reg();
|
||||
ctx.emit(opcode::encode(OpCode::LOAD_VAR, dup_reg, left_reg, 0));
|
||||
|
||||
let offset = (skip_pos as isize) - (ctx.bytecode.len() as isize);
|
||||
match log.operator {
|
||||
LogicalOperator::And => {
|
||||
let offset = ctx.checked_jump_offset(offset);
|
||||
ctx.emit(opcode::encode_jmp_if_false(dup_reg, offset));
|
||||
}
|
||||
LogicalOperator::Or => {
|
||||
let offset = ctx.checked_jump_offset(offset);
|
||||
ctx.emit(opcode::encode_jmp_if_true(dup_reg, offset));
|
||||
}
|
||||
LogicalOperator::Coalesce => return Err("invalid logical operator dispatch".into()),
|
||||
}
|
||||
|
||||
let right_reg = self.emit_expression(&log.right, ctx)?;
|
||||
ctx.emit(opcode::encode(OpCode::LOAD_VAR, dup_reg, right_reg, 0));
|
||||
|
||||
Ok(dup_reg)
|
||||
}
|
||||
|
||||
pub(in crate::emitter) fn emit_update_expression(
|
||||
&self, update: &oxide_parser::UpdateExpression, ctx: &mut CompileCtx,
|
||||
) -> Result<u8, String> {
|
||||
match &update.argument {
|
||||
SimpleAssignmentTarget::AssignmentTargetIdentifier(id) => {
|
||||
let name = id.name.as_str();
|
||||
let var_reg = ctx.lookup_or_global(name);
|
||||
let result_reg = ctx.alloc_reg();
|
||||
let op = match (update.operator, update.prefix) {
|
||||
(UpdateOperator::Increment, true) => OpCode::INC_PRE,
|
||||
(UpdateOperator::Increment, false) => OpCode::INC_POST,
|
||||
(UpdateOperator::Decrement, true) => OpCode::DEC_PRE,
|
||||
(UpdateOperator::Decrement, false) => OpCode::DEC_POST,
|
||||
};
|
||||
ctx.emit(opcode::encode(op, var_reg, result_reg, result_reg));
|
||||
Ok(result_reg)
|
||||
}
|
||||
SimpleAssignmentTarget::StaticMemberExpression(member) => {
|
||||
let obj_reg = self.emit_expression(&member.object, ctx)?;
|
||||
let prop_name = member.property.name.as_str();
|
||||
let key_idx = ctx.add_constant(Constant::String(prop_name.to_string()));
|
||||
let key_reg = ctx.alloc_reg();
|
||||
ctx.emit(opcode::encode(
|
||||
OpCode::LOAD_CONST,
|
||||
key_reg,
|
||||
(key_idx & 0xFF) as u8,
|
||||
((key_idx >> 8) & 0xFF) as u8,
|
||||
));
|
||||
let val_reg = ctx.alloc_reg();
|
||||
let op = match update.operator {
|
||||
UpdateOperator::Increment => OpCode::MEMBER_INC,
|
||||
UpdateOperator::Decrement => OpCode::MEMBER_DEC,
|
||||
};
|
||||
ctx.emit(opcode::encode(op, obj_reg, val_reg, key_reg));
|
||||
ctx.emit(0);
|
||||
ctx.emit(0);
|
||||
ctx.emit(0);
|
||||
Ok(val_reg)
|
||||
}
|
||||
SimpleAssignmentTarget::ComputedMemberExpression(member) => {
|
||||
let obj_reg = self.emit_expression(&member.object, ctx)?;
|
||||
let key_reg = self.emit_expression(&member.expression, ctx)?;
|
||||
let val_reg = ctx.alloc_reg();
|
||||
let op = match update.operator {
|
||||
UpdateOperator::Increment => OpCode::DYN_MEMBER_INC,
|
||||
UpdateOperator::Decrement => OpCode::DYN_MEMBER_DEC,
|
||||
};
|
||||
ctx.emit(opcode::encode(op, obj_reg, key_reg, val_reg));
|
||||
Ok(val_reg)
|
||||
}
|
||||
_ => Err("member update not yet supported".into()),
|
||||
}
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,128 @@
|
||||
use super::*;
|
||||
|
||||
impl Compiler {
|
||||
pub(in crate::emitter) fn emit_template_literal_expression(
|
||||
&self, tl: &oxide_parser::TemplateLiteral, ctx: &mut CompileCtx,
|
||||
) -> Result<u8, String> {
|
||||
let r = ctx.alloc_reg();
|
||||
let quasis = &tl.quasis;
|
||||
let expressions = &tl.expressions;
|
||||
let segment_count = quasis.len() + expressions.len();
|
||||
|
||||
// Evaluate each expression, collecting registers
|
||||
let expr_regs: Vec<u8> = expressions
|
||||
.iter()
|
||||
.map(|e| self.emit_expression(e, ctx))
|
||||
.collect::<Result<Vec<_>, _>>()?;
|
||||
|
||||
// Add each quasi string to constant pool
|
||||
let quasi_const_idxs: Vec<u16> = quasis
|
||||
.iter()
|
||||
.map(|q| {
|
||||
let s = q.value.cooked.as_ref().map(|c| c.to_string()).unwrap_or_default();
|
||||
ctx.add_constant(Constant::String(s))
|
||||
})
|
||||
.collect();
|
||||
|
||||
// Compute total length hint
|
||||
let total_len_hint: usize = quasis
|
||||
.iter()
|
||||
.map(|q| q.value.cooked.as_ref().map(|c| c.len()).unwrap_or(0))
|
||||
.sum();
|
||||
|
||||
// Emit TEMPLATE_STR rd, 0, 0
|
||||
ctx.emit(opcode::encode(OpCode::TEMPLATE_STR, r, 0, 0));
|
||||
|
||||
// Ext word 0: (segment_count << 16) | (total_len_hint & 0xFFFF)
|
||||
ctx.emit(((segment_count as u32) << 16) | (total_len_hint as u32 & 0xFFFF));
|
||||
|
||||
// Interleave segments: quasi[0], expr[0], quasi[1], expr[1], ...
|
||||
let mut expr_iter = expr_regs.iter();
|
||||
for const_idx in quasi_const_idxs.iter() {
|
||||
// Quasi: is_expression=0, bits 0-15 = const_idx
|
||||
ctx.emit(*const_idx as u32 & 0x7FFF_FFFF);
|
||||
|
||||
// Expression (if any remaining)
|
||||
if let Some(expr_reg) = expr_iter.next() {
|
||||
// Expression: is_expression=1, bits 0-15 = reg
|
||||
ctx.emit(0x8000_0000u32 | (*expr_reg as u32));
|
||||
}
|
||||
}
|
||||
|
||||
Ok(r)
|
||||
}
|
||||
|
||||
pub(in crate::emitter) fn emit_tagged_template_expression(
|
||||
&self, tt: &oxide_parser::TaggedTemplateExpression, ctx: &mut CompileCtx,
|
||||
) -> Result<u8, String> {
|
||||
let quasis = &tt.quasi.quasis;
|
||||
let expressions = &tt.quasi.expressions;
|
||||
|
||||
// 1. Evaluate tag expression
|
||||
let tag_reg = self.emit_expression(&tt.tag, ctx)?;
|
||||
|
||||
// 2. Build cooked strings array (into a temp register)
|
||||
let cooked_temp = ctx.alloc_reg();
|
||||
ctx.emit(opcode::encode(OpCode::NEW_ARRAY, cooked_temp, quasis.len() as u8, 0));
|
||||
for (i, quasi) in quasis.iter().enumerate() {
|
||||
let s = quasi.value.cooked.as_ref().map(|c| c.to_string()).unwrap_or_default();
|
||||
let const_idx = ctx.add_constant(Constant::String(s));
|
||||
let str_reg = ctx.alloc_reg();
|
||||
ctx.emit_load_const(str_reg, const_idx);
|
||||
let idx_const = ctx.add_constant(Constant::Int(i as i32));
|
||||
let idx_reg = ctx.alloc_reg();
|
||||
ctx.emit_load_const(idx_reg, idx_const);
|
||||
ctx.emit(opcode::encode(OpCode::SET_ELEM, cooked_temp, idx_reg, str_reg));
|
||||
}
|
||||
|
||||
// 3. Build raw strings array (into a temp register)
|
||||
let raw_temp = ctx.alloc_reg();
|
||||
ctx.emit(opcode::encode(OpCode::NEW_ARRAY, raw_temp, quasis.len() as u8, 0));
|
||||
for (i, quasi) in quasis.iter().enumerate() {
|
||||
let raw = quasi.value.raw.to_string();
|
||||
let const_idx = ctx.add_constant(Constant::String(raw));
|
||||
let str_reg = ctx.alloc_reg();
|
||||
ctx.emit_load_const(str_reg, const_idx);
|
||||
let idx_const = ctx.add_constant(Constant::Int(i as i32));
|
||||
let idx_reg = ctx.alloc_reg();
|
||||
ctx.emit_load_const(idx_reg, idx_const);
|
||||
ctx.emit(opcode::encode(OpCode::SET_ELEM, raw_temp, idx_reg, str_reg));
|
||||
}
|
||||
|
||||
// 4. Evaluate expression arguments (into temp registers)
|
||||
let mut expr_temps = Vec::new();
|
||||
for expr in expressions {
|
||||
expr_temps.push(self.emit_expression(expr, ctx)?);
|
||||
}
|
||||
|
||||
// 5. Allocate consecutive argument slots: cooked, raw, expr[0], expr[1], ...
|
||||
let cooked_slot = ctx.alloc_reg();
|
||||
let raw_slot = ctx.alloc_reg();
|
||||
let mut expr_slots = Vec::new();
|
||||
for _ in expressions {
|
||||
expr_slots.push(ctx.alloc_reg());
|
||||
}
|
||||
|
||||
// Copy temps to consecutive slots using LOAD_VAR (register-to-register move)
|
||||
ctx.emit(opcode::encode(OpCode::LOAD_VAR, cooked_slot, cooked_temp, 0));
|
||||
ctx.emit(opcode::encode(OpCode::LOAD_VAR, raw_slot, raw_temp, 0));
|
||||
for (slot, temp) in expr_slots.iter().zip(expr_temps.iter()) {
|
||||
ctx.emit(opcode::encode(OpCode::LOAD_VAR, *slot, *temp, 0));
|
||||
}
|
||||
|
||||
// 6. Emit undefined as this_arg
|
||||
let undef_idx = ctx.add_constant(Constant::Undefined);
|
||||
let undef_reg = ctx.alloc_reg();
|
||||
ctx.emit_load_const(undef_reg, undef_idx);
|
||||
|
||||
// 7. Emit CALL(tag, undefined, cooked_slot)
|
||||
let arg_count = 2 + expressions.len();
|
||||
ctx.emit(opcode::encode(OpCode::CALL, tag_reg, undef_reg, cooked_slot));
|
||||
ctx.emit(arg_count as u32);
|
||||
|
||||
// 8. Result from regs[0]
|
||||
let result_reg = ctx.alloc_reg();
|
||||
ctx.emit(opcode::encode(OpCode::LOAD_VAR, result_reg, 0, 0));
|
||||
Ok(result_reg)
|
||||
}
|
||||
}
|
||||
@@ -12,6 +12,7 @@ use crate::compiler::{
|
||||
is_int_literal, is_side_effect_free, BinaryOperator, CompileCtx, Compiler, FunctionBodyContext, ParamSpec,
|
||||
};
|
||||
|
||||
mod expr;
|
||||
mod stmt;
|
||||
|
||||
impl Compiler {
|
||||
@@ -872,17 +873,17 @@ impl Compiler {
|
||||
return Err("computed class accessors not yet supported".into());
|
||||
}
|
||||
let undef_reg = self.emit_undefined(ctx);
|
||||
let (get_reg, set_reg) = match method.kind {
|
||||
MethodDefinitionKind::Get => (accessor_reg, undef_reg),
|
||||
MethodDefinitionKind::Set => (undef_reg, accessor_reg),
|
||||
_ => unreachable!(),
|
||||
let (get_reg, set_reg) = if method.kind == MethodDefinitionKind::Get {
|
||||
(accessor_reg, undef_reg)
|
||||
} else {
|
||||
(undef_reg, accessor_reg)
|
||||
};
|
||||
let key_name = self.class_property_name(&method.key)?;
|
||||
let key_idx = ctx.add_constant(Constant::String(key_name));
|
||||
ctx.emit(opcode::encode(OpCode::DEFINE_ACCESSOR, home_reg, get_reg, set_reg));
|
||||
ctx.emit(key_idx as u32);
|
||||
}
|
||||
MethodDefinitionKind::Constructor => unreachable!(),
|
||||
MethodDefinitionKind::Constructor => continue,
|
||||
}
|
||||
}
|
||||
ClassElement::PropertyDefinition(prop) => {
|
||||
@@ -977,940 +978,35 @@ impl Compiler {
|
||||
}
|
||||
pub(crate) fn emit_expression(&self, expr: &Expression, ctx: &mut CompileCtx) -> Result<u8, String> {
|
||||
match expr {
|
||||
Expression::NumericLiteral(n) => {
|
||||
let idx = if is_int_literal(n.value) {
|
||||
ctx.add_constant(Constant::Int(n.value as i32))
|
||||
} else {
|
||||
ctx.add_constant(Constant::Number(n.value))
|
||||
};
|
||||
let r = ctx.alloc_reg();
|
||||
ctx.emit_load_const(r, idx);
|
||||
Ok(r)
|
||||
}
|
||||
Expression::StringLiteral(s) => {
|
||||
let idx = ctx.add_constant(Constant::String(s.value.to_string()));
|
||||
let r = ctx.alloc_reg();
|
||||
ctx.emit_load_const(r, idx);
|
||||
Ok(r)
|
||||
}
|
||||
Expression::BooleanLiteral(b) => {
|
||||
let idx = ctx.add_constant(Constant::Boolean(b.value));
|
||||
let r = ctx.alloc_reg();
|
||||
ctx.emit_load_const(r, idx);
|
||||
Ok(r)
|
||||
}
|
||||
Expression::NullLiteral(_) => {
|
||||
let idx = ctx.add_constant(Constant::Null);
|
||||
let r = ctx.alloc_reg();
|
||||
ctx.emit_load_const(r, idx);
|
||||
Ok(r)
|
||||
}
|
||||
Expression::PrivateInExpression(pin) => {
|
||||
let obj_reg = self.emit_expression(&pin.right, ctx)?;
|
||||
let key_reg = self.emit_private_id_reg(pin.left.name.as_str(), ctx)?;
|
||||
let result_reg = ctx.alloc_reg();
|
||||
ctx.emit(opcode::encode(OpCode::PRIVATE_BRAND_IN, result_reg, obj_reg, key_reg));
|
||||
Ok(result_reg)
|
||||
}
|
||||
Expression::BinaryExpression(bin) => {
|
||||
let checkpoint = ctx.reg_checkpoint();
|
||||
let left = self.emit_expression(&bin.left, ctx)?;
|
||||
let right = self.emit_expression(&bin.right, ctx)?;
|
||||
let op = match bin.operator {
|
||||
BinaryOperator::Addition => OpCode::ADD,
|
||||
BinaryOperator::Subtraction => OpCode::SUB,
|
||||
BinaryOperator::Multiplication => OpCode::MUL,
|
||||
BinaryOperator::Division => OpCode::DIV,
|
||||
BinaryOperator::Remainder => OpCode::MOD,
|
||||
BinaryOperator::BitwiseAnd => OpCode::BIT_AND,
|
||||
BinaryOperator::BitwiseOR => OpCode::BIT_OR,
|
||||
BinaryOperator::BitwiseXOR => OpCode::BIT_XOR,
|
||||
BinaryOperator::ShiftLeft => OpCode::SHL,
|
||||
BinaryOperator::ShiftRight => OpCode::SHR,
|
||||
BinaryOperator::ShiftRightZeroFill => OpCode::USHR,
|
||||
BinaryOperator::Equality => OpCode::EQ,
|
||||
BinaryOperator::Inequality => OpCode::NEQ,
|
||||
BinaryOperator::LessThan => OpCode::LT,
|
||||
BinaryOperator::GreaterThan => OpCode::GT,
|
||||
BinaryOperator::LessEqualThan => OpCode::LTE,
|
||||
BinaryOperator::GreaterEqualThan => OpCode::GTE,
|
||||
BinaryOperator::In => OpCode::IN,
|
||||
BinaryOperator::Instanceof => OpCode::INSTANCEOF,
|
||||
BinaryOperator::StrictEquality => OpCode::STRICT_EQ,
|
||||
BinaryOperator::StrictInequality => OpCode::STRICT_NEQ,
|
||||
_ => return Err(format!("unsupported binary operator: {:?}", bin.operator)),
|
||||
};
|
||||
ctx.emit(opcode::encode(op, left, left, right));
|
||||
if is_side_effect_free(&bin.left) && is_side_effect_free(&bin.right) {
|
||||
ctx.restore_reg_checkpoint(checkpoint.saturating_add(1).max(left.saturating_add(1)));
|
||||
}
|
||||
Ok(left)
|
||||
}
|
||||
Expression::UnaryExpression(un) => {
|
||||
if matches!(un.operator, UnaryOperator::Delete) {
|
||||
return match &un.argument {
|
||||
Expression::Identifier(_) => {
|
||||
Err("SyntaxError: delete of an unqualified identifier in strict mode".into())
|
||||
}
|
||||
Expression::StaticMemberExpression(member) => {
|
||||
let obj_reg = self.emit_expression(&member.object, ctx)?;
|
||||
let prop_name = member.property.name.as_str();
|
||||
let const_idx = ctx.add_constant(Constant::String(prop_name.to_string()));
|
||||
ctx.emit(opcode::encode(OpCode::DELETE_PROP_STATIC, obj_reg, obj_reg, 0));
|
||||
ctx.emit(const_idx as u32);
|
||||
Ok(obj_reg)
|
||||
}
|
||||
Expression::ComputedMemberExpression(member) => {
|
||||
let obj_reg = self.emit_expression(&member.object, ctx)?;
|
||||
let key_reg = self.emit_expression(&member.expression, ctx)?;
|
||||
ctx.emit(opcode::encode(OpCode::DELETE_PROP_DYNAMIC, obj_reg, obj_reg, key_reg));
|
||||
Ok(obj_reg)
|
||||
}
|
||||
Expression::ChainExpression(chain) => {
|
||||
let mut nullish_jumps = Vec::new();
|
||||
let result_reg = match &chain.expression {
|
||||
ChainElement::StaticMemberExpression(member) => {
|
||||
let obj_reg = self.emit_expression(&member.object, ctx)?;
|
||||
if member.optional {
|
||||
let dup_reg = ctx.alloc_reg();
|
||||
ctx.emit(opcode::encode(OpCode::LOAD_VAR, dup_reg, obj_reg, 0));
|
||||
let jump_pos = ctx.bytecode.len();
|
||||
ctx.emit(opcode::encode_jmp_if_nullish(dup_reg, 0));
|
||||
nullish_jumps.push(jump_pos);
|
||||
}
|
||||
let prop_name = member.property.name.as_str();
|
||||
let const_idx = ctx.add_constant(Constant::String(prop_name.to_string()));
|
||||
ctx.emit(opcode::encode(OpCode::DELETE_PROP_STATIC, obj_reg, obj_reg, 0));
|
||||
ctx.emit(const_idx as u32);
|
||||
obj_reg
|
||||
}
|
||||
ChainElement::ComputedMemberExpression(member) => {
|
||||
let obj_reg = self.emit_expression(&member.object, ctx)?;
|
||||
if member.optional {
|
||||
let dup_reg = ctx.alloc_reg();
|
||||
ctx.emit(opcode::encode(OpCode::LOAD_VAR, dup_reg, obj_reg, 0));
|
||||
let jump_pos = ctx.bytecode.len();
|
||||
ctx.emit(opcode::encode_jmp_if_nullish(dup_reg, 0));
|
||||
nullish_jumps.push(jump_pos);
|
||||
}
|
||||
let key_reg = self.emit_expression(&member.expression, ctx)?;
|
||||
ctx.emit(opcode::encode(OpCode::DELETE_PROP_DYNAMIC, obj_reg, obj_reg, key_reg));
|
||||
obj_reg
|
||||
}
|
||||
_ => return Err("invalid delete target".into()),
|
||||
};
|
||||
let end_jump_pos = ctx.bytecode.len();
|
||||
ctx.emit(opcode::encode_jmp(0));
|
||||
let short_pos = ctx.bytecode.len();
|
||||
for jump_pos in nullish_jumps {
|
||||
let offset = (short_pos as isize) - (jump_pos as isize);
|
||||
let instr = ctx.bytecode[jump_pos];
|
||||
let rd = opcode::rd(instr);
|
||||
let offset = ctx.checked_jump_offset(offset);
|
||||
ctx.bytecode[jump_pos] = opcode::encode_jmp_if_nullish(rd, offset);
|
||||
}
|
||||
let true_idx = ctx.add_constant(Constant::Boolean(true));
|
||||
ctx.emit_load_const(result_reg, true_idx);
|
||||
let end_pos = ctx.bytecode.len();
|
||||
let offset = (end_pos as isize) - (end_jump_pos as isize);
|
||||
let offset = ctx.checked_jump_offset(offset);
|
||||
ctx.bytecode[end_jump_pos] = opcode::encode_jmp(offset);
|
||||
Ok(result_reg)
|
||||
}
|
||||
_ => Err("invalid delete target".into()),
|
||||
};
|
||||
}
|
||||
let arg = self.emit_expression(&un.argument, ctx)?;
|
||||
match un.operator {
|
||||
UnaryOperator::UnaryNegation => {
|
||||
ctx.emit(opcode::encode(OpCode::NEG, arg, arg, 0));
|
||||
Ok(arg)
|
||||
}
|
||||
UnaryOperator::Typeof => {
|
||||
ctx.emit(opcode::encode(OpCode::TYPEOF, arg, arg, 0));
|
||||
Ok(arg)
|
||||
}
|
||||
UnaryOperator::Void => {
|
||||
ctx.emit(opcode::encode(OpCode::VOID, arg, arg, 0));
|
||||
Ok(arg)
|
||||
}
|
||||
UnaryOperator::LogicalNot => {
|
||||
ctx.emit(opcode::encode(OpCode::NOT, arg, arg, 0));
|
||||
Ok(arg)
|
||||
}
|
||||
UnaryOperator::BitwiseNot => {
|
||||
ctx.emit(opcode::encode(OpCode::BIT_NOT, arg, arg, 0));
|
||||
Ok(arg)
|
||||
}
|
||||
UnaryOperator::UnaryPlus => {
|
||||
ctx.emit(opcode::encode(OpCode::UNARY_PLUS, arg, arg, 0));
|
||||
Ok(arg)
|
||||
}
|
||||
UnaryOperator::Delete => unreachable!("delete handled before argument emit"),
|
||||
}
|
||||
}
|
||||
Expression::ConditionalExpression(cond) => {
|
||||
let id = ctx.next_label_id();
|
||||
let else_label = Label::TernaryElse(id);
|
||||
let end_label = Label::TernaryEnd(id);
|
||||
|
||||
let test_reg = self.emit_expression(&cond.test, ctx)?;
|
||||
let else_pos = ctx.resolve_label(else_label)?;
|
||||
let end_pos = ctx.resolve_label(end_label)?;
|
||||
|
||||
let offset = (else_pos as isize) - (ctx.bytecode.len() as isize);
|
||||
let offset = ctx.checked_jump_offset(offset);
|
||||
ctx.emit(opcode::encode_jmp_if_false(test_reg, offset));
|
||||
|
||||
let cons_reg = self.emit_expression(&cond.consequent, ctx)?;
|
||||
let result_reg = ctx.alloc_reg();
|
||||
ctx.emit(opcode::encode(OpCode::LOAD_VAR, result_reg, cons_reg, 0));
|
||||
|
||||
let offset = (end_pos as isize) - (ctx.bytecode.len() as isize);
|
||||
let offset = ctx.checked_jump_offset(offset);
|
||||
ctx.emit(opcode::encode_jmp(offset));
|
||||
|
||||
let alt_reg = self.emit_expression(&cond.alternate, ctx)?;
|
||||
ctx.emit(opcode::encode(OpCode::LOAD_VAR, result_reg, alt_reg, 0));
|
||||
|
||||
Ok(result_reg)
|
||||
}
|
||||
Expression::LogicalExpression(log) => {
|
||||
use oxide_parser::LogicalOperator;
|
||||
let left_reg = self.emit_expression(&log.left, ctx)?;
|
||||
|
||||
if is_side_effect_free(&log.left) && is_side_effect_free(&log.right) {
|
||||
let right_reg = self.emit_expression(&log.right, ctx)?;
|
||||
let r = ctx.alloc_reg();
|
||||
let op = match log.operator {
|
||||
LogicalOperator::And => OpCode::AND,
|
||||
LogicalOperator::Or => OpCode::OR,
|
||||
LogicalOperator::Coalesce => OpCode::NULLISH,
|
||||
};
|
||||
ctx.emit(opcode::encode(op, r, left_reg, right_reg));
|
||||
Ok(r)
|
||||
} else {
|
||||
let id = ctx.next_label_id();
|
||||
if matches!(log.operator, LogicalOperator::Coalesce) {
|
||||
let dup_reg = ctx.alloc_reg();
|
||||
ctx.emit(opcode::encode(OpCode::LOAD_VAR, dup_reg, left_reg, 0));
|
||||
let nullish_jump_pos = ctx.bytecode.len();
|
||||
ctx.emit(opcode::encode_jmp_if_nullish(dup_reg, 0));
|
||||
let end_jump_pos = ctx.bytecode.len();
|
||||
ctx.emit(opcode::encode_jmp(0));
|
||||
let rhs_pos = ctx.bytecode.len();
|
||||
let right_reg = self.emit_expression(&log.right, ctx)?;
|
||||
ctx.emit(opcode::encode(OpCode::LOAD_VAR, dup_reg, right_reg, 0));
|
||||
let end_pos = ctx.bytecode.len();
|
||||
let offset = (rhs_pos as isize) - (nullish_jump_pos as isize);
|
||||
let offset = ctx.checked_jump_offset(offset);
|
||||
ctx.bytecode[nullish_jump_pos] = opcode::encode_jmp_if_nullish(dup_reg, offset);
|
||||
let offset = (end_pos as isize) - (end_jump_pos as isize);
|
||||
let offset = ctx.checked_jump_offset(offset);
|
||||
ctx.bytecode[end_jump_pos] = opcode::encode_jmp(offset);
|
||||
return Ok(dup_reg);
|
||||
}
|
||||
let skip_label = match log.operator {
|
||||
LogicalOperator::And => Label::TernaryEnd(id),
|
||||
LogicalOperator::Or => Label::TernaryElse(id),
|
||||
LogicalOperator::Coalesce => unreachable!(),
|
||||
};
|
||||
let skip_pos = ctx.resolve_label(skip_label)?;
|
||||
|
||||
let dup_reg = ctx.alloc_reg();
|
||||
ctx.emit(opcode::encode(OpCode::LOAD_VAR, dup_reg, left_reg, 0));
|
||||
|
||||
let offset = (skip_pos as isize) - (ctx.bytecode.len() as isize);
|
||||
match log.operator {
|
||||
LogicalOperator::And => {
|
||||
let offset = ctx.checked_jump_offset(offset);
|
||||
ctx.emit(opcode::encode_jmp_if_false(dup_reg, offset));
|
||||
}
|
||||
LogicalOperator::Or => {
|
||||
let offset = ctx.checked_jump_offset(offset);
|
||||
ctx.emit(opcode::encode_jmp_if_true(dup_reg, offset));
|
||||
}
|
||||
LogicalOperator::Coalesce => unreachable!(),
|
||||
}
|
||||
|
||||
let right_reg = self.emit_expression(&log.right, ctx)?;
|
||||
ctx.emit(opcode::encode(OpCode::LOAD_VAR, dup_reg, right_reg, 0));
|
||||
|
||||
Ok(dup_reg)
|
||||
}
|
||||
}
|
||||
Expression::StaticMemberExpression(member) => {
|
||||
if matches!(&member.object, Expression::Super(_)) {
|
||||
if !ctx.in_instance_method && !ctx.in_static_method && !ctx.in_derived_constructor {
|
||||
return Err("super property only supported in class methods".into());
|
||||
}
|
||||
let prop_name = member.property.name.as_str();
|
||||
let idx = ctx.add_constant(Constant::String(prop_name.to_string()));
|
||||
let key_reg = ctx.alloc_reg();
|
||||
ctx.emit_load_const(key_reg, idx);
|
||||
let this_reg = ctx.alloc_reg();
|
||||
ctx.emit(opcode::encode(OpCode::LOAD_VAR, this_reg, 254, 0));
|
||||
let result_reg = ctx.alloc_reg();
|
||||
let op = if ctx.in_static_method {
|
||||
OpCode::SUPER_STATIC_GET_PROP
|
||||
} else {
|
||||
OpCode::SUPER_GET_PROP
|
||||
};
|
||||
ctx.emit(opcode::encode(op, result_reg, this_reg, key_reg));
|
||||
return Ok(result_reg);
|
||||
}
|
||||
let obj_reg = self.emit_expression(&member.object, ctx)?;
|
||||
let prop_name = member.property.name.as_str();
|
||||
let idx = ctx.add_constant(Constant::String(prop_name.to_string()));
|
||||
let key_reg = ctx.alloc_reg();
|
||||
ctx.emit(opcode::encode(OpCode::LOAD_CONST, key_reg, (idx & 0xFF) as u8, ((idx >> 8) & 0xFF) as u8));
|
||||
ctx.emit(opcode::encode(OpCode::IC_GET_PROP, 0, obj_reg, key_reg));
|
||||
ctx.emit(0);
|
||||
ctx.emit(0);
|
||||
ctx.emit(0);
|
||||
Ok(obj_reg)
|
||||
}
|
||||
Expression::ComputedMemberExpression(member) => {
|
||||
let obj_reg = self.emit_expression(&member.object, ctx)?;
|
||||
let key_reg = self.emit_expression(&member.expression, ctx)?;
|
||||
let r = ctx.alloc_reg();
|
||||
ctx.emit(opcode::encode(OpCode::GET_PROP_DYNAMIC, obj_reg, key_reg, r));
|
||||
Ok(r)
|
||||
}
|
||||
Expression::PrivateFieldExpression(member) => {
|
||||
let obj_reg = self.emit_expression(&member.object, ctx)?;
|
||||
let key_reg = self.emit_private_id_reg(member.field.name.as_str(), ctx)?;
|
||||
let r = ctx.alloc_reg();
|
||||
ctx.emit(opcode::encode(OpCode::GET_PRIVATE, r, obj_reg, key_reg));
|
||||
Ok(r)
|
||||
}
|
||||
Expression::ChainExpression(chain) => {
|
||||
let id = ctx.next_label_id();
|
||||
let short_label = Label::TernaryElse(id);
|
||||
let end_label = Label::TernaryEnd(id);
|
||||
let value_reg = self.emit_chain_element(&chain.expression, Some(short_label), ctx)?;
|
||||
let result_reg = ctx.alloc_reg();
|
||||
ctx.emit(opcode::encode(OpCode::LOAD_VAR, result_reg, value_reg, 0));
|
||||
let end_pos = ctx.resolve_label(end_label)?;
|
||||
let offset = (end_pos as isize) - (ctx.bytecode.len() as isize);
|
||||
let offset = ctx.checked_jump_offset(offset);
|
||||
ctx.emit(opcode::encode_jmp(offset));
|
||||
let undefined_idx = ctx.add_constant(Constant::Undefined);
|
||||
ctx.emit_load_const(result_reg, undefined_idx);
|
||||
Ok(result_reg)
|
||||
}
|
||||
Expression::ObjectExpression(obj) => {
|
||||
let obj_reg = ctx.alloc_reg();
|
||||
ctx.emit(opcode::encode(OpCode::NEW_OBJECT, obj_reg, 0, 0));
|
||||
let prop_checkpoint = ctx.reg_checkpoint();
|
||||
for prop in &obj.properties {
|
||||
let oxide_parser::ObjectPropertyKind::ObjectProperty(p) = prop else {
|
||||
return Err("spread properties not yet supported".into());
|
||||
};
|
||||
let prop_name = match &p.key {
|
||||
oxide_parser::PropertyKey::StaticIdentifier(ident) => ident.name.as_str().to_string(),
|
||||
oxide_parser::PropertyKey::StringLiteral(s) => s.value.to_string(),
|
||||
_ => return Err("unsupported object property key type".into()),
|
||||
};
|
||||
if matches!(p.kind, PropertyKind::Get | PropertyKind::Set) {
|
||||
let accessor_reg = self.emit_expression(&p.value, ctx)?;
|
||||
if let Some(sub_mod) = ctx.sub_modules.last_mut() {
|
||||
sub_mod.function_name = Some(prop_name.to_string());
|
||||
}
|
||||
let undef_reg = self.emit_undefined(ctx);
|
||||
let (get_reg, set_reg) = match p.kind {
|
||||
PropertyKind::Get => (accessor_reg, undef_reg),
|
||||
PropertyKind::Set => (undef_reg, accessor_reg),
|
||||
_ => unreachable!(),
|
||||
};
|
||||
let idx = ctx.add_constant(Constant::String(prop_name.to_string()));
|
||||
ctx.emit(opcode::encode(OpCode::DEFINE_ACCESSOR, obj_reg, get_reg, set_reg));
|
||||
ctx.emit(idx as u32);
|
||||
ctx.restore_reg_checkpoint(prop_checkpoint);
|
||||
} else {
|
||||
let idx = ctx.add_constant(Constant::String(prop_name.to_string()));
|
||||
let key_reg = ctx.alloc_reg();
|
||||
ctx.emit_load_const(key_reg, idx);
|
||||
let val_reg = self.emit_expression(&p.value, ctx)?;
|
||||
// Name inference (D-04): if property value is an arrow function,
|
||||
// set the compiled sub_module's function_name to the property key.
|
||||
if matches!(&p.value, Expression::ArrowFunctionExpression(_)) {
|
||||
if let Some(sub_mod) = ctx.sub_modules.last_mut() {
|
||||
sub_mod.function_name = Some(prop_name.to_string());
|
||||
}
|
||||
}
|
||||
ctx.emit(opcode::encode(OpCode::SET_PROP, obj_reg, val_reg, key_reg));
|
||||
ctx.restore_reg_checkpoint(prop_checkpoint);
|
||||
}
|
||||
}
|
||||
Ok(obj_reg)
|
||||
}
|
||||
Expression::ArrayExpression(arr) => {
|
||||
let arr_reg = ctx.alloc_reg();
|
||||
let n = arr.elements.len() as u16;
|
||||
ctx.emit(opcode::encode(OpCode::NEW_ARRAY, arr_reg, (n & 0xFF) as u8, ((n >> 8) & 0xFF) as u8));
|
||||
let elem_checkpoint = ctx.reg_checkpoint();
|
||||
for (i, elem) in arr.elements.iter().enumerate() {
|
||||
let Some(e) = elem.as_expression() else {
|
||||
return Err("spread not supported".into());
|
||||
};
|
||||
let val_reg = self.emit_expression(e, ctx)?;
|
||||
let idx_reg = ctx.alloc_reg();
|
||||
let idx = ctx.add_constant(Constant::Int(i as i32));
|
||||
ctx.emit_load_const(idx_reg, idx);
|
||||
ctx.emit(opcode::encode(OpCode::SET_ELEM, arr_reg, idx_reg, val_reg));
|
||||
ctx.restore_reg_checkpoint(elem_checkpoint);
|
||||
}
|
||||
Ok(arr_reg)
|
||||
}
|
||||
Expression::AssignmentExpression(assign) => {
|
||||
if let oxide_parser::AssignmentTarget::StaticMemberExpression(member) = &assign.left {
|
||||
if let Some(logical_op) = assign.operator.to_logical_operator() {
|
||||
let id = ctx.next_label_id();
|
||||
let store_label = Label::TernaryElse(id);
|
||||
let end_label = Label::TernaryEnd(id);
|
||||
let obj_reg = self.emit_expression(&member.object, ctx)?;
|
||||
let prop_name = member.property.name.as_str();
|
||||
let idx = ctx.add_constant(Constant::String(prop_name.to_string()));
|
||||
let key_reg = ctx.alloc_reg();
|
||||
ctx.emit_load_const(key_reg, idx);
|
||||
let result_reg = ctx.alloc_reg();
|
||||
ctx.emit(opcode::encode(OpCode::LOAD_VAR, result_reg, obj_reg, 0));
|
||||
ctx.emit(opcode::encode(OpCode::IC_GET_PROP, 0, result_reg, key_reg));
|
||||
ctx.emit(0);
|
||||
ctx.emit(0);
|
||||
ctx.emit(0);
|
||||
self.emit_logical_assign_test(logical_op, result_reg, store_label, end_label, ctx)?;
|
||||
let val_reg = self.emit_expression(&assign.right, ctx)?;
|
||||
ctx.emit(opcode::encode(OpCode::IC_SET_PROP, obj_reg, val_reg, key_reg));
|
||||
ctx.emit(0);
|
||||
ctx.emit(0);
|
||||
ctx.emit(0);
|
||||
ctx.emit(opcode::encode(OpCode::LOAD_VAR, result_reg, val_reg, 0));
|
||||
return Ok(result_reg);
|
||||
}
|
||||
let obj_reg = self.emit_expression(&member.object, ctx)?;
|
||||
let val_reg = self.emit_expression(&assign.right, ctx)?;
|
||||
let prop_name = member.property.name.as_str();
|
||||
let idx = ctx.add_constant(Constant::String(prop_name.to_string()));
|
||||
let key_reg = ctx.alloc_reg();
|
||||
ctx.emit_load_const(key_reg, idx);
|
||||
if assign.operator != AssignmentOperator::Assign {
|
||||
let op = match assign.operator {
|
||||
AssignmentOperator::Addition => OpCode::COMPOUND_MEMBER_ADD,
|
||||
AssignmentOperator::Subtraction => OpCode::COMPOUND_MEMBER_SUB,
|
||||
AssignmentOperator::Multiplication => OpCode::COMPOUND_MEMBER_MUL,
|
||||
AssignmentOperator::Division => OpCode::COMPOUND_MEMBER_DIV,
|
||||
AssignmentOperator::Remainder => OpCode::COMPOUND_MEMBER_MOD,
|
||||
AssignmentOperator::Exponential => OpCode::COMPOUND_MEMBER_EXP,
|
||||
_ => {
|
||||
return Err(format!("compound assignment operator {:?} not supported", assign.operator))
|
||||
}
|
||||
};
|
||||
ctx.emit(opcode::encode(op, obj_reg, val_reg, key_reg));
|
||||
ctx.emit(0);
|
||||
ctx.emit(0);
|
||||
ctx.emit(0);
|
||||
Ok(val_reg)
|
||||
} else {
|
||||
ctx.emit(opcode::encode(OpCode::IC_SET_PROP, obj_reg, val_reg, key_reg));
|
||||
ctx.emit(0);
|
||||
ctx.emit(0);
|
||||
ctx.emit(0);
|
||||
Ok(val_reg)
|
||||
}
|
||||
} else if let oxide_parser::AssignmentTarget::ComputedMemberExpression(member) = &assign.left {
|
||||
if let Some(logical_op) = assign.operator.to_logical_operator() {
|
||||
let id = ctx.next_label_id();
|
||||
let store_label = Label::TernaryElse(id);
|
||||
let end_label = Label::TernaryEnd(id);
|
||||
let obj_reg = self.emit_expression(&member.object, ctx)?;
|
||||
let key_reg = self.emit_expression(&member.expression, ctx)?;
|
||||
let result_reg = ctx.alloc_reg();
|
||||
ctx.emit(opcode::encode(OpCode::GET_PROP_DYNAMIC, obj_reg, key_reg, result_reg));
|
||||
self.emit_logical_assign_test(logical_op, result_reg, store_label, end_label, ctx)?;
|
||||
let val_reg = self.emit_expression(&assign.right, ctx)?;
|
||||
ctx.emit(opcode::encode(OpCode::SET_PROP_DYNAMIC, obj_reg, key_reg, val_reg));
|
||||
ctx.emit(opcode::encode(OpCode::LOAD_VAR, result_reg, val_reg, 0));
|
||||
return Ok(result_reg);
|
||||
}
|
||||
let obj_reg = self.emit_expression(&member.object, ctx)?;
|
||||
let key_reg = self.emit_expression(&member.expression, ctx)?;
|
||||
let val_reg = self.emit_expression(&assign.right, ctx)?;
|
||||
ctx.emit(opcode::encode(OpCode::SET_PROP_DYNAMIC, obj_reg, key_reg, val_reg));
|
||||
Ok(val_reg)
|
||||
} else if let oxide_parser::AssignmentTarget::PrivateFieldExpression(member) = &assign.left {
|
||||
if assign.operator != AssignmentOperator::Assign {
|
||||
return Err("compound assignment to private fields not supported".into());
|
||||
}
|
||||
let obj_reg = self.emit_expression(&member.object, ctx)?;
|
||||
let val_reg = self.emit_expression(&assign.right, ctx)?;
|
||||
let key_reg = self.emit_private_id_reg(member.field.name.as_str(), ctx)?;
|
||||
ctx.emit(opcode::encode(OpCode::SET_PRIVATE, obj_reg, val_reg, key_reg));
|
||||
Ok(val_reg)
|
||||
} else if let oxide_parser::AssignmentTarget::AssignmentTargetIdentifier(id_ref) = &assign.left {
|
||||
if assign.operator != AssignmentOperator::Assign {
|
||||
if let Some(logical_op) = assign.operator.to_logical_operator() {
|
||||
let id = ctx.next_label_id();
|
||||
let store_label = Label::TernaryElse(id);
|
||||
let end_label = Label::TernaryEnd(id);
|
||||
let name = id_ref.name.as_str();
|
||||
let var_reg = ctx.lookup_or_global(name);
|
||||
let result_reg = ctx.alloc_reg();
|
||||
ctx.emit(opcode::encode(OpCode::LOAD_VAR, result_reg, var_reg, 0));
|
||||
self.emit_logical_assign_test(logical_op, result_reg, store_label, end_label, ctx)?;
|
||||
let val_reg = self.emit_expression(&assign.right, ctx)?;
|
||||
let is_const = ctx.lookup_const_flag(name);
|
||||
let const_flag = if is_const { 1 } else { 0 };
|
||||
ctx.emit(opcode::encode(OpCode::STORE_VAR, var_reg, val_reg, const_flag));
|
||||
ctx.emit(opcode::encode(OpCode::LOAD_VAR, result_reg, val_reg, 0));
|
||||
Ok(result_reg)
|
||||
} else if assign.operator == AssignmentOperator::Addition
|
||||
|| assign.operator == AssignmentOperator::Subtraction
|
||||
|| assign.operator == AssignmentOperator::Multiplication
|
||||
|| assign.operator == AssignmentOperator::Division
|
||||
|| assign.operator == AssignmentOperator::Remainder
|
||||
|| assign.operator == AssignmentOperator::Exponential
|
||||
|| assign.operator == AssignmentOperator::BitwiseAnd
|
||||
|| assign.operator == AssignmentOperator::BitwiseOR
|
||||
|| assign.operator == AssignmentOperator::BitwiseXOR
|
||||
|| assign.operator == AssignmentOperator::ShiftLeft
|
||||
|| assign.operator == AssignmentOperator::ShiftRight
|
||||
|| assign.operator == AssignmentOperator::ShiftRightZeroFill
|
||||
{
|
||||
let rhs = self.emit_expression(&assign.right, ctx)?;
|
||||
let name = id_ref.name.as_str();
|
||||
let var_reg = ctx.lookup_or_global(name);
|
||||
let op = match assign.operator {
|
||||
AssignmentOperator::Addition => OpCode::COMPOUND_ADD,
|
||||
AssignmentOperator::Subtraction => OpCode::COMPOUND_SUB,
|
||||
AssignmentOperator::Multiplication => OpCode::COMPOUND_MUL,
|
||||
AssignmentOperator::Division => OpCode::COMPOUND_DIV,
|
||||
AssignmentOperator::Remainder => OpCode::COMPOUND_MOD,
|
||||
AssignmentOperator::Exponential => OpCode::COMPOUND_EXP,
|
||||
AssignmentOperator::BitwiseAnd => OpCode::COMPOUND_AND,
|
||||
AssignmentOperator::BitwiseOR => OpCode::COMPOUND_OR,
|
||||
AssignmentOperator::BitwiseXOR => OpCode::COMPOUND_XOR,
|
||||
AssignmentOperator::ShiftLeft => OpCode::COMPOUND_SHL,
|
||||
AssignmentOperator::ShiftRight => OpCode::COMPOUND_SHR,
|
||||
AssignmentOperator::ShiftRightZeroFill => OpCode::COMPOUND_USHR,
|
||||
_ => {
|
||||
return Err(format!(
|
||||
"compound assignment operator {:?} not supported",
|
||||
assign.operator
|
||||
))
|
||||
}
|
||||
};
|
||||
ctx.emit(opcode::encode(op, var_reg, rhs, 0));
|
||||
Ok(var_reg)
|
||||
} else {
|
||||
Err(format!("compound assignment operator {:?} not supported", assign.operator))
|
||||
}
|
||||
} else {
|
||||
let val_reg = self.emit_expression(&assign.right, ctx)?;
|
||||
let name = id_ref.name.as_str();
|
||||
let var_reg = ctx.lookup_or_global(name);
|
||||
let is_const = ctx.lookup_const_flag(name);
|
||||
let const_flag = if is_const { 1 } else { 0 };
|
||||
ctx.emit(opcode::encode(OpCode::STORE_VAR, var_reg, val_reg, const_flag));
|
||||
Ok(val_reg)
|
||||
}
|
||||
} else if matches!(
|
||||
&assign.left,
|
||||
oxide_parser::AssignmentTarget::ArrayAssignmentTarget(_)
|
||||
| oxide_parser::AssignmentTarget::ObjectAssignmentTarget(_)
|
||||
) {
|
||||
if assign.operator != AssignmentOperator::Assign {
|
||||
return Err("compound destructuring assignment not supported".into());
|
||||
}
|
||||
let val_reg = self.emit_expression(&assign.right, ctx)?;
|
||||
self.emit_assign_target(&assign.left, val_reg, ctx)?;
|
||||
Ok(val_reg)
|
||||
} else {
|
||||
Err("assignment target not supported".into())
|
||||
}
|
||||
}
|
||||
Expression::UpdateExpression(update) => match &update.argument {
|
||||
SimpleAssignmentTarget::AssignmentTargetIdentifier(id) => {
|
||||
let name = id.name.as_str();
|
||||
let var_reg = ctx.lookup_or_global(name);
|
||||
let result_reg = ctx.alloc_reg();
|
||||
let op = match (update.operator, update.prefix) {
|
||||
(UpdateOperator::Increment, true) => OpCode::INC_PRE,
|
||||
(UpdateOperator::Increment, false) => OpCode::INC_POST,
|
||||
(UpdateOperator::Decrement, true) => OpCode::DEC_PRE,
|
||||
(UpdateOperator::Decrement, false) => OpCode::DEC_POST,
|
||||
};
|
||||
ctx.emit(opcode::encode(op, var_reg, result_reg, result_reg));
|
||||
Ok(result_reg)
|
||||
}
|
||||
SimpleAssignmentTarget::StaticMemberExpression(member) => {
|
||||
let obj_reg = self.emit_expression(&member.object, ctx)?;
|
||||
let prop_name = member.property.name.as_str();
|
||||
let key_idx = ctx.add_constant(Constant::String(prop_name.to_string()));
|
||||
let key_reg = ctx.alloc_reg();
|
||||
ctx.emit(opcode::encode(
|
||||
OpCode::LOAD_CONST,
|
||||
key_reg,
|
||||
(key_idx & 0xFF) as u8,
|
||||
((key_idx >> 8) & 0xFF) as u8,
|
||||
));
|
||||
let val_reg = ctx.alloc_reg();
|
||||
let op = match update.operator {
|
||||
UpdateOperator::Increment => OpCode::MEMBER_INC,
|
||||
UpdateOperator::Decrement => OpCode::MEMBER_DEC,
|
||||
};
|
||||
ctx.emit(opcode::encode(op, obj_reg, val_reg, key_reg));
|
||||
ctx.emit(0);
|
||||
ctx.emit(0);
|
||||
ctx.emit(0);
|
||||
Ok(val_reg)
|
||||
}
|
||||
SimpleAssignmentTarget::ComputedMemberExpression(member) => {
|
||||
let obj_reg = self.emit_expression(&member.object, ctx)?;
|
||||
let key_reg = self.emit_expression(&member.expression, ctx)?;
|
||||
let val_reg = ctx.alloc_reg();
|
||||
let op = match update.operator {
|
||||
UpdateOperator::Increment => OpCode::DYN_MEMBER_INC,
|
||||
UpdateOperator::Decrement => OpCode::DYN_MEMBER_DEC,
|
||||
};
|
||||
ctx.emit(opcode::encode(op, obj_reg, key_reg, val_reg));
|
||||
Ok(val_reg)
|
||||
}
|
||||
_ => Err("member update not yet supported".into()),
|
||||
},
|
||||
Expression::Identifier(ident) => {
|
||||
let var_reg = ctx.lookup_or_builtin(ident.name.as_str())?;
|
||||
let r = ctx.alloc_reg();
|
||||
ctx.emit(opcode::encode(OpCode::LOAD_VAR, r, var_reg, 0));
|
||||
Ok(r)
|
||||
}
|
||||
// TemplateLiteral: interleaved quasis + expressions via TEMPLATE_STR opcode (D-07)
|
||||
Expression::TemplateLiteral(tl) => {
|
||||
let r = ctx.alloc_reg();
|
||||
let quasis = &tl.quasis;
|
||||
let expressions = &tl.expressions;
|
||||
let segment_count = quasis.len() + expressions.len();
|
||||
|
||||
// Evaluate each expression, collecting registers
|
||||
let expr_regs: Vec<u8> = expressions
|
||||
.iter()
|
||||
.map(|e| self.emit_expression(e, ctx))
|
||||
.collect::<Result<Vec<_>, _>>()?;
|
||||
|
||||
// Add each quasi string to constant pool
|
||||
let quasi_const_idxs: Vec<u16> = quasis
|
||||
.iter()
|
||||
.map(|q| {
|
||||
let s = q.value.cooked.as_ref().map(|c| c.to_string()).unwrap_or_default();
|
||||
ctx.add_constant(Constant::String(s))
|
||||
})
|
||||
.collect();
|
||||
|
||||
// Compute total length hint
|
||||
let total_len_hint: usize = quasis
|
||||
.iter()
|
||||
.map(|q| q.value.cooked.as_ref().map(|c| c.len()).unwrap_or(0))
|
||||
.sum();
|
||||
|
||||
// Emit TEMPLATE_STR rd, 0, 0
|
||||
ctx.emit(opcode::encode(OpCode::TEMPLATE_STR, r, 0, 0));
|
||||
|
||||
// Ext word 0: (segment_count << 16) | (total_len_hint & 0xFFFF)
|
||||
ctx.emit(((segment_count as u32) << 16) | (total_len_hint as u32 & 0xFFFF));
|
||||
|
||||
// Interleave segments: quasi[0], expr[0], quasi[1], expr[1], ...
|
||||
let mut expr_iter = expr_regs.iter();
|
||||
for const_idx in quasi_const_idxs.iter() {
|
||||
// Quasi: is_expression=0, bits 0-15 = const_idx
|
||||
ctx.emit(*const_idx as u32 & 0x7FFF_FFFF);
|
||||
|
||||
// Expression (if any remaining)
|
||||
if let Some(expr_reg) = expr_iter.next() {
|
||||
// Expression: is_expression=1, bits 0-15 = reg
|
||||
ctx.emit(0x8000_0000u32 | (*expr_reg as u32));
|
||||
}
|
||||
}
|
||||
|
||||
Ok(r)
|
||||
}
|
||||
// TaggedTemplateExpression: tag`str ${expr}` => CALL(tag, undefined, cooked_array, raw_array, ...exprs) (D-08)
|
||||
Expression::TaggedTemplateExpression(tt) => {
|
||||
let quasis = &tt.quasi.quasis;
|
||||
let expressions = &tt.quasi.expressions;
|
||||
|
||||
// 1. Evaluate tag expression
|
||||
let tag_reg = self.emit_expression(&tt.tag, ctx)?;
|
||||
|
||||
// 2. Build cooked strings array (into a temp register)
|
||||
let cooked_temp = ctx.alloc_reg();
|
||||
ctx.emit(opcode::encode(OpCode::NEW_ARRAY, cooked_temp, quasis.len() as u8, 0));
|
||||
for (i, quasi) in quasis.iter().enumerate() {
|
||||
let s = quasi.value.cooked.as_ref().map(|c| c.to_string()).unwrap_or_default();
|
||||
let const_idx = ctx.add_constant(Constant::String(s));
|
||||
let str_reg = ctx.alloc_reg();
|
||||
ctx.emit_load_const(str_reg, const_idx);
|
||||
let idx_const = ctx.add_constant(Constant::Int(i as i32));
|
||||
let idx_reg = ctx.alloc_reg();
|
||||
ctx.emit_load_const(idx_reg, idx_const);
|
||||
ctx.emit(opcode::encode(OpCode::SET_ELEM, cooked_temp, idx_reg, str_reg));
|
||||
}
|
||||
|
||||
// 3. Build raw strings array (into a temp register)
|
||||
let raw_temp = ctx.alloc_reg();
|
||||
ctx.emit(opcode::encode(OpCode::NEW_ARRAY, raw_temp, quasis.len() as u8, 0));
|
||||
for (i, quasi) in quasis.iter().enumerate() {
|
||||
let raw = quasi.value.raw.to_string();
|
||||
let const_idx = ctx.add_constant(Constant::String(raw));
|
||||
let str_reg = ctx.alloc_reg();
|
||||
ctx.emit_load_const(str_reg, const_idx);
|
||||
let idx_const = ctx.add_constant(Constant::Int(i as i32));
|
||||
let idx_reg = ctx.alloc_reg();
|
||||
ctx.emit_load_const(idx_reg, idx_const);
|
||||
ctx.emit(opcode::encode(OpCode::SET_ELEM, raw_temp, idx_reg, str_reg));
|
||||
}
|
||||
|
||||
// 4. Evaluate expression arguments (into temp registers)
|
||||
let mut expr_temps = Vec::new();
|
||||
for expr in expressions {
|
||||
expr_temps.push(self.emit_expression(expr, ctx)?);
|
||||
}
|
||||
|
||||
// 5. Allocate consecutive argument slots: cooked, raw, expr[0], expr[1], ...
|
||||
let cooked_slot = ctx.alloc_reg();
|
||||
let raw_slot = ctx.alloc_reg();
|
||||
let mut expr_slots = Vec::new();
|
||||
for _ in expressions {
|
||||
expr_slots.push(ctx.alloc_reg());
|
||||
}
|
||||
|
||||
// Copy temps to consecutive slots using LOAD_VAR (register-to-register move)
|
||||
ctx.emit(opcode::encode(OpCode::LOAD_VAR, cooked_slot, cooked_temp, 0));
|
||||
ctx.emit(opcode::encode(OpCode::LOAD_VAR, raw_slot, raw_temp, 0));
|
||||
for (slot, temp) in expr_slots.iter().zip(expr_temps.iter()) {
|
||||
ctx.emit(opcode::encode(OpCode::LOAD_VAR, *slot, *temp, 0));
|
||||
}
|
||||
|
||||
// 6. Emit undefined as this_arg
|
||||
let undef_idx = ctx.add_constant(Constant::Undefined);
|
||||
let undef_reg = ctx.alloc_reg();
|
||||
ctx.emit_load_const(undef_reg, undef_idx);
|
||||
|
||||
// 7. Emit CALL(tag, undefined, cooked_slot)
|
||||
let arg_count = 2 + expressions.len();
|
||||
ctx.emit(opcode::encode(OpCode::CALL, tag_reg, undef_reg, cooked_slot));
|
||||
ctx.emit(arg_count as u32);
|
||||
|
||||
// 8. Result from regs[0]
|
||||
let result_reg = ctx.alloc_reg();
|
||||
ctx.emit(opcode::encode(OpCode::LOAD_VAR, result_reg, 0, 0));
|
||||
Ok(result_reg)
|
||||
}
|
||||
// ArrowFunctionExpression: compile body, capture lexical this (D-01)
|
||||
// Name inference (D-04) happens at assignment site - see VariableDeclaration/ObjectProperty.
|
||||
Expression::ArrowFunctionExpression(arrow) => {
|
||||
// Rest params not yet supported (D-06 placeholder)
|
||||
if let Some(_rest) = &arrow.params.rest {
|
||||
return Err("rest params in arrow functions not yet supported".into());
|
||||
}
|
||||
|
||||
// Extract param names (same pattern as FunctionExpression)
|
||||
let mut param_names = Vec::new();
|
||||
for (idx, param) in arrow.params.items.iter().enumerate() {
|
||||
match ¶m.pattern {
|
||||
oxide_parser::BindingPattern::BindingIdentifier(bi) => {
|
||||
param_names.push(ParamSpec::Identifier(bi.name.to_string()));
|
||||
}
|
||||
pattern => {
|
||||
param_names.push(ParamSpec::Pattern {
|
||||
synthetic_name: format!("@@param_{idx}"),
|
||||
pattern,
|
||||
});
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Expression body: pass body statements directly with is_expression_body=true.
|
||||
// Statement body: pass body statements with is_expression_body=false.
|
||||
let body_stmts = &arrow.body.statements;
|
||||
let is_expr_body = arrow.expression;
|
||||
|
||||
let mut sub_module = self.compile_function_body(¶m_names, body_stmts, ctx, is_expr_body, true)?;
|
||||
sub_module.is_arrow = true;
|
||||
|
||||
ctx.sub_modules.push(sub_module);
|
||||
// 1-indexed: 0 = no sub_module (sentinel)
|
||||
let sub_idx = ctx.sub_modules.len() as u32;
|
||||
|
||||
let const_idx = ctx.add_constant(Constant::BytecodeFunc(sub_idx));
|
||||
let r = ctx.alloc_reg();
|
||||
ctx.emit_load_const(r, const_idx);
|
||||
Ok(r)
|
||||
}
|
||||
Expression::FunctionExpression(fe) => {
|
||||
// FunctionExpression: compile body, emit LOAD_CONST(BytecodeFunc)
|
||||
let mut param_names = Vec::new();
|
||||
for (idx, param) in fe.params.items.iter().enumerate() {
|
||||
match ¶m.pattern {
|
||||
oxide_parser::BindingPattern::BindingIdentifier(bi) => {
|
||||
param_names.push(ParamSpec::Identifier(bi.name.to_string()));
|
||||
}
|
||||
pattern => {
|
||||
param_names.push(ParamSpec::Pattern {
|
||||
synthetic_name: format!("@@param_{idx}"),
|
||||
pattern,
|
||||
});
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
let body_stmts: &[Statement] = if let Some(body) = &fe.body { &body.statements } else { &[] };
|
||||
|
||||
let mut sub_module = self.compile_function_body(¶m_names, body_stmts, ctx, false, false)?;
|
||||
if let Some(id) = &fe.id {
|
||||
sub_module.function_name = Some(id.name.to_string());
|
||||
}
|
||||
ctx.sub_modules.push(sub_module);
|
||||
// 1-indexed: 0 = no sub_module (sentinel)
|
||||
let sub_idx = ctx.sub_modules.len() as u32;
|
||||
|
||||
let const_idx = ctx.add_constant(Constant::BytecodeFunc(sub_idx));
|
||||
let r = ctx.alloc_reg();
|
||||
ctx.emit_load_const(r, const_idx);
|
||||
Ok(r)
|
||||
}
|
||||
Expression::ClassExpression(class) => self.emit_class(class, ctx),
|
||||
Expression::NewExpression(ne) => {
|
||||
let constructor_reg = self.emit_expression(&ne.callee, ctx)?;
|
||||
let mut arg_regs = Vec::new();
|
||||
for arg in &ne.arguments {
|
||||
if let Some(expr) = arg.as_expression() {
|
||||
arg_regs.push(self.emit_expression(expr, ctx)?);
|
||||
}
|
||||
}
|
||||
let first_arg_reg = if arg_regs.is_empty() { 0u8 } else { arg_regs[0] };
|
||||
let r = ctx.alloc_reg();
|
||||
ctx.emit(opcode::encode(OpCode::NEW_EXPRESSION, r, constructor_reg, first_arg_reg));
|
||||
ctx.emit(arg_regs.len() as u32);
|
||||
Ok(r)
|
||||
}
|
||||
Expression::ParenthesizedExpression(p) => self.emit_expression(&p.expression, ctx),
|
||||
Expression::CallExpression(call) => {
|
||||
if matches!(&call.callee, Expression::Super(_)) {
|
||||
if !ctx.in_derived_constructor {
|
||||
return Err("super() only supported in derived constructors".into());
|
||||
}
|
||||
let mut arg_regs = Vec::new();
|
||||
for arg in &call.arguments {
|
||||
if let Some(expr) = arg.as_expression() {
|
||||
arg_regs.push(self.emit_expression(expr, ctx)?);
|
||||
}
|
||||
}
|
||||
let first_arg_reg = if arg_regs.is_empty() { 0u8 } else { arg_regs[0] };
|
||||
let result_reg = ctx.alloc_reg();
|
||||
ctx.emit(opcode::encode(OpCode::SUPER_CALL, result_reg, first_arg_reg, 0));
|
||||
ctx.emit(arg_regs.len() as u32);
|
||||
if !ctx.after_super_inserted {
|
||||
if let Some(field_code) = ctx.after_super_insert.clone() {
|
||||
ctx.bytecode.extend(field_code);
|
||||
ctx.after_super_inserted = true;
|
||||
}
|
||||
}
|
||||
return Ok(result_reg);
|
||||
}
|
||||
let (callee_reg, this_reg) = match &call.callee {
|
||||
Expression::PrivateFieldExpression(member) => {
|
||||
let obj_reg = self.emit_expression(&member.object, ctx)?;
|
||||
let key_reg = self.emit_private_id_reg(member.field.name.as_str(), ctx)?;
|
||||
let callee_reg = ctx.alloc_reg();
|
||||
ctx.emit(opcode::encode(OpCode::GET_PRIVATE, callee_reg, obj_reg, key_reg));
|
||||
(callee_reg, obj_reg)
|
||||
}
|
||||
Expression::StaticMemberExpression(member) => {
|
||||
let is_super_member = matches!(&member.object, Expression::Super(_));
|
||||
let obj_reg = if is_super_member {
|
||||
let this_reg = ctx.alloc_reg();
|
||||
ctx.emit(opcode::encode(OpCode::LOAD_VAR, this_reg, 254, 0));
|
||||
this_reg
|
||||
} else {
|
||||
self.emit_expression(&member.object, ctx)?
|
||||
};
|
||||
let prop_name = member.property.name.as_str();
|
||||
let idx = ctx.add_constant(Constant::String(prop_name.to_string()));
|
||||
let key_reg = ctx.alloc_reg();
|
||||
ctx.emit_load_const(key_reg, idx);
|
||||
let callee_reg = ctx.alloc_reg();
|
||||
if is_super_member {
|
||||
if !ctx.in_instance_method && !ctx.in_static_method && !ctx.in_derived_constructor {
|
||||
return Err("super property only supported in class methods".into());
|
||||
}
|
||||
let op = if ctx.in_static_method {
|
||||
OpCode::SUPER_STATIC_GET_PROP
|
||||
} else {
|
||||
OpCode::SUPER_GET_PROP
|
||||
};
|
||||
ctx.emit(opcode::encode(op, callee_reg, obj_reg, key_reg));
|
||||
} else {
|
||||
ctx.emit(opcode::encode(OpCode::LOAD_VAR, callee_reg, obj_reg, 0));
|
||||
ctx.emit(opcode::encode(OpCode::IC_GET_PROP, 0, callee_reg, key_reg));
|
||||
ctx.emit(0);
|
||||
ctx.emit(0);
|
||||
ctx.emit(0);
|
||||
}
|
||||
(callee_reg, obj_reg)
|
||||
}
|
||||
_ => {
|
||||
let callee_reg = self.emit_expression(&call.callee, ctx)?;
|
||||
let this_idx = ctx.add_constant(Constant::Undefined);
|
||||
let this_reg = ctx.alloc_reg();
|
||||
ctx.emit_load_const(this_reg, this_idx);
|
||||
(callee_reg, this_reg)
|
||||
}
|
||||
};
|
||||
let mut arg_regs = Vec::new();
|
||||
for arg in &call.arguments {
|
||||
if let Some(expr) = arg.as_expression() {
|
||||
arg_regs.push(self.emit_expression(expr, ctx)?);
|
||||
}
|
||||
}
|
||||
let first_arg_reg = if arg_regs.is_empty() { 0u8 } else { arg_regs[0] };
|
||||
let op = match &call.callee {
|
||||
Expression::Identifier(ident) if ctx.is_builtin(ident.name.as_str()) => OpCode::CALL_NATIVE,
|
||||
_ => OpCode::CALL,
|
||||
};
|
||||
ctx.emit(opcode::encode(op, callee_reg, this_reg, first_arg_reg));
|
||||
ctx.emit(arg_regs.len() as u32);
|
||||
// Copy result from regs[0] into a dedicated register so multiple
|
||||
// call expressions don't overwrite each other.
|
||||
let result_reg = ctx.alloc_reg();
|
||||
ctx.emit(opcode::encode(OpCode::LOAD_VAR, result_reg, 0, 0));
|
||||
Ok(result_reg)
|
||||
}
|
||||
Expression::ThisExpression(_) => {
|
||||
let r = ctx.alloc_reg();
|
||||
let src = ctx.static_block_this_reg.unwrap_or(254);
|
||||
ctx.emit(opcode::encode(OpCode::LOAD_VAR, r, src, 0));
|
||||
Ok(r)
|
||||
}
|
||||
Expression::RegExpLiteral(lit) => {
|
||||
if let Some(raw) = &lit.raw {
|
||||
let raw_str = raw.to_string();
|
||||
if raw_str.len() >= 2 && raw_str.starts_with('/') {
|
||||
let last_slash = raw_str.rfind('/').unwrap_or(raw_str.len() - 1);
|
||||
let pattern = &raw_str[1..last_slash];
|
||||
let flags = &raw_str[last_slash + 1..];
|
||||
let ci = ctx.add_constant(Constant::RegExp(pattern.to_string(), flags.to_string()));
|
||||
let r = ctx.alloc_reg();
|
||||
ctx.emit_load_const(r, ci);
|
||||
Ok(r)
|
||||
} else {
|
||||
Err(format!("unsupported expression type: {:?}", expr))
|
||||
}
|
||||
} else {
|
||||
Err(format!("unsupported expression type: {:?}", expr))
|
||||
}
|
||||
}
|
||||
_ => Err(format!("unsupported expression type: {:?}", expr)),
|
||||
Expression::NumericLiteral(n) => self.emit_numeric_literal_expression(n, ctx),
|
||||
Expression::StringLiteral(s) => self.emit_string_literal_expression(s, ctx),
|
||||
Expression::BooleanLiteral(b) => self.emit_boolean_literal_expression(b, ctx),
|
||||
Expression::NullLiteral(_) => self.emit_null_literal_expression(ctx),
|
||||
Expression::PrivateInExpression(pin) => self.emit_private_in_expression(pin, ctx),
|
||||
Expression::BinaryExpression(bin) => self.emit_binary_expression(bin, ctx),
|
||||
Expression::UnaryExpression(un) => self.emit_unary_expression(un, ctx),
|
||||
Expression::ConditionalExpression(cond) => self.emit_conditional_expression(cond, ctx),
|
||||
Expression::LogicalExpression(log) => self.emit_logical_expression(log, ctx),
|
||||
Expression::StaticMemberExpression(member) => self.emit_static_member_expression(member, ctx),
|
||||
Expression::ComputedMemberExpression(member) => self.emit_computed_member_expression(member, ctx),
|
||||
Expression::PrivateFieldExpression(member) => self.emit_private_field_expression(member, ctx),
|
||||
Expression::ChainExpression(chain) => self.emit_chain_expression(chain, ctx),
|
||||
Expression::ObjectExpression(obj) => self.emit_object_expression(obj, ctx),
|
||||
Expression::ArrayExpression(arr) => self.emit_array_expression(arr, ctx),
|
||||
Expression::AssignmentExpression(assign) => self.emit_assignment_expression(assign, ctx),
|
||||
Expression::UpdateExpression(update) => self.emit_update_expression(update, ctx),
|
||||
Expression::Identifier(ident) => self.emit_identifier_expression(ident, ctx),
|
||||
Expression::TemplateLiteral(tl) => self.emit_template_literal_expression(tl, ctx),
|
||||
Expression::TaggedTemplateExpression(tt) => self.emit_tagged_template_expression(tt, ctx),
|
||||
Expression::ArrowFunctionExpression(arrow) => self.emit_arrow_function_expression(arrow, ctx),
|
||||
Expression::FunctionExpression(fe) => self.emit_function_expression(fe, ctx),
|
||||
Expression::ClassExpression(class) => self.emit_class_expression(class, ctx),
|
||||
Expression::NewExpression(ne) => self.emit_new_expression(ne, ctx),
|
||||
Expression::ParenthesizedExpression(p) => self.emit_parenthesized_expression(p, ctx),
|
||||
Expression::CallExpression(call) => self.emit_call_expression(call, ctx),
|
||||
Expression::ThisExpression(_) => self.emit_this_expression(ctx),
|
||||
Expression::RegExpLiteral(lit) => self.emit_reg_exp_literal_expression(lit, ctx),
|
||||
_ => self.emit_unsupported_expression(expr, ctx),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user