refactor: 拆分编译流水线过程以避免逻辑漂移

crates/oxide_compiler/src/passes/stmt/basic/mod.rs

@@ -0,0 +1,28 @@
+pub use super::super::*;
+
+mod break_continue;
+mod expression;
+mod labeled;
+mod return_stmt;
+
+impl Compiler {
+    pub(crate) fn emit_basic_domain(&self, stmt: &Statement, ctx: &mut CompileCtx) -> Result<Option<u8>, String> {
+        match stmt {
+            Statement::ExpressionStatement(_) => self.emit_basic_expression(stmt, ctx),
+            Statement::ReturnStatement(_) => self.emit_basic_return(stmt, ctx),
+            Statement::EmptyStatement(_) => Ok(None),
+            _ => Ok(None),
+        }
+    }
+
+    pub(crate) fn count_basic(&self, stmt: &Statement, ctx: &mut CompileCtx) {
+        match stmt {
+            Statement::ExpressionStatement(es) => self.count_expression_statement(es, ctx),
+            Statement::ReturnStatement(ret) => self.count_return_statement(ret, ctx),
+            Statement::BreakStatement(_) => self.count_break_statement(ctx),
+            Statement::ContinueStatement(_) => self.count_continue_statement(ctx),
+            Statement::LabeledStatement(ls) => self.count_labeled_statement(ls, ctx),
+            _ => {}
+        }
+    }
+}