stable 重构文件结构
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190
src/ccompiler/frontend/parser/ast.h
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190
src/ccompiler/frontend/parser/ast.h
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#ifndef __AST_H__
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#define __AST_H__
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#include "../lexer/lexer.h"
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#include <lib/utils/ds/vector.h>
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#include "symtab/symtab.h"
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#include "type.h"
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typedef enum {
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NT_INIT,
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NT_ROOT, // global scope in root node
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NT_ADD, // (expr) + (expr)
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NT_SUB, // (expr) - (expr)
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NT_MUL, // (expr) * (expr)
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NT_DIV, // (expr) / (expr)
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NT_MOD, // (expr) % (expr)
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NT_AND, // (expr) & (expr)
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NT_OR, // (expr) | (expr)
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NT_XOR, // (expr) ^ (expr)
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NT_L_SH, // (expr) << (expr)
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NT_R_SH, // (expr) >> (expr)
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NT_EQ, // (expr) == (expr)
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NT_NEQ, // (expr) != (expr)
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NT_LE, // (expr) <= (expr)
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NT_GE, // (expr) >= (expr)
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NT_LT, // (expr) < (expr)
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NT_GT, // (expr) > (expr)
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NT_AND_AND, // (expr) && (expr)
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NT_OR_OR, // (expr) || (expr)
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NT_NOT, // ! (expr)
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NT_BIT_NOT, // ~ (expr)
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NT_COND, // (expr) ? (expr) : (expr)
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NT_COMMA, // expr, expr 逗号运算符
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NT_ASSIGN, // (expr) = (expr)
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NT_ADDRESS, // &expr (取地址)
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NT_DEREF, // *expr (解引用)
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NT_INDEX, // arr[index] (数组访问)
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NT_MEMBER, // struct.member
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NT_PTR_MEMBER,// ptr->member
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NT_CAST, // (type)expr 强制类型转换
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NT_SIZEOF, // sizeof(type|expr)
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// NT_ALIGNOF, // _Alignof(type) (C11)
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NT_STMT_EMPTY, // ;
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NT_STMT_IF, // if (cond) { ... } [else {...}]
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NT_STMT_WHILE, // while (cond) { ... }
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NT_STMT_DOWHILE, // do {...} while (cond)
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NT_STMT_FOR, // for (init; cond; iter) {...}
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NT_STMT_SWITCH, // switch (expr) { case ... }
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NT_STMT_BREAK, // break;
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NT_STMT_CONTINUE, // continue;
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NT_STMT_GOTO, // goto label;
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NT_STMT_CASE, // case const_expr:
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NT_STMT_DEFAULT, // default:
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NT_STMT_LABEL, // label:
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NT_STMT_BLOCK, // { ... }
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NT_STMT_RETURN, // return expr;
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NT_STMT_EXPR, // expr;
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NT_BLOCK,
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// NT_TYPE_BASE, // 基础类型节点
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// NT_TYPE_PTR, // 指针类型
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// NT_TYPE_ARRAY, // 数组类型
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// NT_TYPE_FUNC, // 函数类型
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// NT_TYPE_QUAL, // 限定符节点
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NT_DECL_VAR, // type name; or type name = expr;
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NT_DECL_FUNC, // type func_name(param_list);
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NT_FUNC, // type func_name(param_list) {...}
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NT_PARAM, // 函数形参
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NT_ARG_LIST, // 实参列表（需要与NT_CALL配合）
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NT_TERM_CALL, // func (expr)
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NT_TERM_VAL,
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NT_TERM_IDENT,
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NT_TERM_TYPE,
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} ast_type_t;
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typedef struct ast_node {
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ast_type_t type;
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union {
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void *children[6];
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struct {
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vector_header(children, struct ast_node *);
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} root;
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struct {
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vector_header(children, struct ast_node *);
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} block;
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struct {
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symtab_key_t key;
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struct ast_node * decl_node;
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tok_t tok;
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} syms;
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struct {
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vector_header(params, struct ast_node *);
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} params;
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struct {
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struct ast_node * name;
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struct ast_node * params;
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struct ast_node * func_decl;
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} call;
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struct {
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struct ast_node *type;
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struct ast_node *name;
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struct ast_node *expr_stmt; // optional
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void* data;
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} decl_val;
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struct {
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struct ast_node *ret;
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struct ast_node *name;
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struct ast_node *params; // array of params
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struct ast_node *def;
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} decl_func;
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struct {
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struct ast_node *decl;
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struct ast_node *body; // optional
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void* data;
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} func;
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struct {
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struct ast_node *left;
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struct ast_node *right;
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struct ast_node *optional; // optional
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} expr;
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struct {
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struct ast_node *cond;
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struct ast_node *if_stmt;
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struct ast_node *else_stmt; // optional
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} if_stmt;
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struct {
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struct ast_node *cond;
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struct ast_node *body;
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} switch_stmt;
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struct {
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struct ast_node *cond;
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struct ast_node *body;
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} while_stmt;
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struct {
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struct ast_node *body;
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struct ast_node *cond;
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} do_while_stmt;
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struct {
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struct ast_node *init;
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struct ast_node *cond; // optional
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struct ast_node *iter; // optional
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struct ast_node *body;
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} for_stmt;
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struct {
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struct ast_node *expr_stmt; // optional
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} return_stmt;
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struct {
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struct ast_node *label;
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} goto_stmt;
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struct {
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struct ast_node *label;
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} label_stmt;
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struct {
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struct ast_node *block;
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} block_stmt;
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struct {
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struct ast_node *expr_stmt;
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} expr_stmt;
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};
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} ast_node_t;
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ast_node_t* new_ast_node(void);
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void init_ast_node(ast_node_t* node);
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void pnt_ast(ast_node_t* node, int depth);
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typedef struct parser parser_t;
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typedef ast_node_t* (*parse_func_t) (parser_t*);
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void parse_prog(parser_t* parser);
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ast_node_t* parse_decl(parser_t* parser);
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ast_node_t* parse_decl_val(parser_t* parser);
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ast_node_t* parse_block(parser_t* parser);
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ast_node_t* parse_stmt(parser_t* parser);
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ast_node_t* parse_expr(parser_t* parser);
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ast_node_t* parse_type(parser_t* parser);
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ast_node_t* new_ast_ident_node(tok_t* tok);
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ast_node_t* expect_pop_ident(tok_stream_t* tokbuf);
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int peek_decl(tok_stream_t* tokbuf);
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#endif
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