refactor: 重构前端代码并添加日志功能

- 重命名和重构了多个文件，包括 lexer、parser 和 AST 相关代码
- 添加了日志功能，使用 LOG_* 宏替代原有的 error 和 warn 函数
- 优化了错误处理和内存分配方式
- 调整了代码结构，提高了模块化和可读性

ccompiler/middleend/ir/ir_dump.c

@@ -0,0 +1,76 @@
+#include "ir.h"
+#include "ir_lib.h"
+#include "ir_type.h"
+#include <stdio.h>
+#include <assert.h>
+
+typedef struct ir_dump {
+    FILE* fp;
+} ir_dump_t;
+
+
+void dump_ir_node(ir_node_t* node, ir_dump_t* dump) {
+    fprintf(dump->fp, "%%%p", node);
+    switch (node->tag) {
+        case IR_NODE_ALLOC: {
+            node->type = NULL;
+            // fprintf(dump->fp, "%p\n", );
+            break;
+        }
+        case IR_NODE_BRANCH: {
+            node->data.branch.cond = NULL;
+            node->data.branch.true_bblock = NULL;
+            node->data.branch.false_bblock = NULL;
+            break;
+        }
+        case IR_NODE_CALL: {
+            vector_init(node->data.call.args);
+            node->data.call.callee = NULL;
+            break;
+        }
+        case IR_NODE_CONST_INT: {
+            node->data.const_int.val = 0;
+            break;
+        }
+        case IR_NODE_JUMP: {
+            node->data.jump.target_bblock = NULL;
+            break;
+        }
+        case IR_NODE_LOAD: {
+            node->data.load.target = NULL;
+            break;
+        }
+        case IR_NODE_STORE: {
+            node->data.store.target = NULL;
+            node->data.store.value = NULL;
+            break;
+        }
+        case IR_NODE_OP: {
+            node->data.op.op = 0;
+            node->data.op.lhs = NULL;
+            node->data.op.rhs = NULL;
+            break;
+        }
+        case IR_NODE_RET: {
+            node->data.ret.ret_val = NULL;
+            break;
+        }
+        case IR_NODE_GET_PTR: {
+        }
+        default: {
+            assert(0);
+        }
+    }
+}
+
+void dump_ir_bblock(ir_bblock_t* block) {
+
+}
+
+void dump_ir_func(ir_func_t* func) {
+
+}
+
+void dump_ir_prog(ir_prog_t* prog) {
+
+}