refactor: 拆分 expression emit 分发逻辑

2026-06-23 19:00:57 +08:00
parent 62ff06a6f2
commit 696a1fdb7e
10 changed files with 1086 additions and 939 deletions
@@ -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)
+    }
+}