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8fcfeda14ee3963a5607ad50fcf63d2c35b6478e
scc/libs/ast/include/scc_ast.h
zzy 8fcfeda14e feat(ast): 添加内置表达式支持并完善解析器功能 
- 添加SCC_AST_EXPR_BUILTIN枚举值用于表示内置表达式
- 定义scc_ast_builtin_expr_type_t枚举包含va_start、va_end、va_copy、va_arg等内置函数类型
- 在AST表达式结构中添加builtin字段以支持内置表达式存储
- 实现scc_ast_decl_unsafe_val_init内联函数用于不安全的声明初始化
- 修改sizeof和alignof表达式初始化函数以支持类型或表达式参数
- 修复默认语句的字段引用错误(default_stmt而非case_stmt)
- 改进词法分析器对整数字面量后缀(U、L、LL等)的处理逻辑
- 重构解析器中的声明解析逻辑，统一使用scc_parse_declarator函数
- 完善结构体、联合体和枚举类型的声明解析，支持仅有名称的前向声明
- 优化初始化列表解析，支持复合字面量的成员访问语法
- 更新参数类型列表解析以正确处理参数声明
- 修复括号表达式的解析逻辑，区分类型转换和普通括号表达式
2026-03-13 17:39:14 +08:00

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#ifndef __SCC_AST_H__
#define __SCC_AST_H__
#include "ast_builtin.h"
#include "ast_def.h"
#include "ast_dump.h"
// decls can be null but maybe warning
static inline void
scc_ast_translation_unit_init(scc_ast_translation_unit_t *translation_unit,
scc_ast_decl_vec_t *decls) {
Assert(translation_unit != null);
translation_unit->base.type = SCC_AST_TRANSLATION_UNIT;
translation_unit->base.loc = scc_pos_create();
if (decls == null) {
scc_vec_init(translation_unit->declarations);
} else {
translation_unit->declarations = *decls;
scc_vec_init(*decls);
}
}
// name and var_init can be null
static inline void scc_ast_decl_unsafe_val_init(scc_ast_decl_t *decl,
scc_ast_type_t *type,
const char *name,
scc_ast_expr_t *var_init) {
Assert(decl != null && type != null);
decl->base.loc = scc_pos_create();
decl->base.type = SCC_AST_DECL_VAR;
decl->name = name;
decl->var.type = type;
decl->var.init = var_init;
}
// var_init can be null
static inline void scc_ast_decl_val_init(scc_ast_decl_t *decl,
scc_ast_type_t *type, const char *name,
scc_ast_expr_t *var_init) {
Assert(decl != null && name != null && type != null);
decl->base.loc = scc_pos_create();
decl->base.type = SCC_AST_DECL_VAR;
decl->name = name;
decl->var.type = type;
decl->var.init = var_init;
}
// body can be null
static inline void scc_ast_decl_func_init(scc_ast_decl_t *decl,
scc_ast_type_t *type,
const char *name,
scc_ast_stmt_t *body) {
Assert(decl != null && name != null && type != null);
decl->base.loc = scc_pos_create();
decl->base.type = SCC_AST_DECL_FUNC;
decl->name = name;
decl->func.type = type;
Assert(type->base.type == SCC_AST_TYPE_FUNCTION);
decl->func.body = body;
}
// name can be null
static inline void scc_ast_decl_param_init(scc_ast_decl_t *decl,
scc_ast_type_t *type,
const char *name) {
Assert(decl != null && type != null);
decl->base.loc = scc_pos_create();
decl->base.type = SCC_AST_DECL_PARAM;
decl->name = name;
decl->param.type = type;
}
// name and fields can be null
static inline void scc_ast_decl_struct_init(scc_ast_decl_t *decl,
const char *name,
scc_ast_decl_vec_t *fields_move) {
Assert(decl != null);
decl->base.loc = scc_pos_create();
decl->base.type = SCC_AST_DECL_STRUCT;
decl->name = name;
if (fields_move == null) {
scc_vec_init(decl->record.fields);
} else {
decl->record.fields = *fields_move;
scc_vec_init(*fields_move);
}
}
// name and fields can be null
static inline void scc_ast_decl_union_init(scc_ast_decl_t *decl,
const char *name,
scc_ast_decl_vec_t *fields_move) {
Assert(decl != null);
decl->base.loc = scc_pos_create();
decl->base.type = SCC_AST_DECL_UNION;
decl->name = name;
if (fields_move == null) {
scc_vec_init(decl->record.fields);
} else {
decl->record.fields = *fields_move;
scc_vec_init(*fields_move);
}
}
// name and fields can be null
static inline void scc_ast_decl_enum_init(scc_ast_decl_t *decl,
const char *name,
scc_ast_expr_vec_t *fields_move) {
Assert(decl != null);
decl->base.loc = scc_pos_create();
decl->base.type = SCC_AST_DECL_ENUM;
decl->name = name;
if (fields_move == null) {
scc_vec_init(decl->enumeration.enumerators);
} else {
decl->enumeration.enumerators = *fields_move;
scc_vec_init(*fields_move);
}
}
static inline void scc_ast_decl_typedef_init(scc_ast_decl_t *decl,
const char *name,
scc_ast_type_t *type) {
Assert(decl != null && name != null && type != null);
decl->base.loc = scc_pos_create();
decl->base.type = SCC_AST_DECL_TYPEDEF;
decl->name = name;
decl->typedef_decl.type = type;
}
// items can be null
static inline void
scc_ast_stmt_compound_init(scc_ast_stmt_t *stmt,
scc_ast_block_item_vec_t *items_move) {
Assert(stmt != null);
stmt->base.loc = scc_pos_create();
stmt->base.type = SCC_AST_STMT_COMPOUND;
if (items_move == null) {
scc_vec_init(stmt->compound.block_items);
} else {
stmt->compound.block_items = *items_move;
scc_vec_init(*items_move);
}
}
// expr can be null
static inline void scc_ast_stmt_expr_init(scc_ast_stmt_t *stmt,
scc_ast_expr_t *expr) {
Assert(stmt != null);
stmt->base.loc = scc_pos_create();
stmt->base.type = SCC_AST_STMT_EXPR;
stmt->expr.expr = expr;
}
// opt_else can be null
static inline void scc_ast_stmt_if_init(scc_ast_stmt_t *stmt,
scc_ast_expr_t *cond,
scc_ast_stmt_t *then,
scc_ast_stmt_t *opt_else) {
Assert(stmt != null && cond != null && then != null);
stmt->base.loc = scc_pos_create();
stmt->base.type = SCC_AST_STMT_IF;
stmt->if_stmt.cond = cond;
stmt->if_stmt.then_stmt = then;
stmt->if_stmt.opt_else_stmt = opt_else;
}
static inline void scc_ast_stmt_while_init(scc_ast_stmt_t *stmt,
scc_ast_expr_t *cond,
scc_ast_stmt_t *body) {
Assert(stmt != null && cond != null && body != null);
stmt->base.loc = scc_pos_create();
stmt->base.type = SCC_AST_STMT_WHILE;
stmt->while_stmt.cond = cond;
stmt->while_stmt.body = body;
}
static inline void scc_ast_stmt_do_while_init(scc_ast_stmt_t *stmt,
scc_ast_expr_t *cond,
scc_ast_stmt_t *body) {
Assert(stmt != null && cond != null && body != null);
stmt->base.loc = scc_pos_create();
stmt->base.type = SCC_AST_STMT_DO_WHILE;
stmt->while_stmt.cond = cond;
stmt->while_stmt.body = body;
}
// FIXME
static inline void scc_ast_stmt_for_init(scc_ast_stmt_t *stmt,
scc_ast_type_t *init,
scc_ast_expr_t *cond,
scc_ast_expr_t *incr,
scc_ast_stmt_t *body) {
Assert(stmt != null && body != null);
stmt->base.loc = scc_pos_create();
stmt->base.type = SCC_AST_STMT_FOR;
stmt->for_stmt.init = init;
stmt->for_stmt.cond = cond;
stmt->for_stmt.incr = incr;
stmt->for_stmt.body = body;
}
static inline void scc_ast_stmt_switch_init(scc_ast_stmt_t *stmt,
scc_ast_expr_t *cond,
scc_ast_stmt_t *body) {
Assert(stmt != null && cond != null && body != null);
stmt->base.loc = scc_pos_create();
stmt->base.type = SCC_AST_STMT_SWITCH;
stmt->switch_stmt.cond = cond;
stmt->switch_stmt.body = body;
}
static inline void scc_ast_stmt_case_init(scc_ast_stmt_t *stmt,
scc_ast_expr_t *cond,
scc_ast_stmt_t *body) {
Assert(stmt != null && cond != null && body != null);
stmt->base.loc = scc_pos_create();
stmt->base.type = SCC_AST_STMT_CASE;
stmt->case_stmt.expr = cond;
stmt->case_stmt.stmt = body;
}
static inline void scc_ast_stmt_default_init(scc_ast_stmt_t *stmt,
scc_ast_stmt_t *body) {
Assert(stmt != null && body != null);
stmt->base.loc = scc_pos_create();
stmt->base.type = SCC_AST_STMT_DEFAULT;
stmt->default_stmt.stmt = body;
}
static inline void scc_ast_stmt_break_init(scc_ast_stmt_t *stmt) {
Assert(stmt != null);
stmt->base.loc = scc_pos_create();
stmt->base.type = SCC_AST_STMT_BREAK;
}
static inline void scc_ast_stmt_continue_init(scc_ast_stmt_t *stmt) {
Assert(stmt != null);
stmt->base.loc = scc_pos_create();
stmt->base.type = SCC_AST_STMT_CONTINUE;
}
// expr can be null
static inline void scc_ast_stmt_return_init(scc_ast_stmt_t *stmt,
scc_ast_expr_t *expr) {
Assert(stmt != null);
stmt->base.loc = scc_pos_create();
stmt->base.type = SCC_AST_STMT_RETURN;
stmt->return_stmt.expr = expr;
}
static inline void scc_ast_stmt_goto_init(scc_ast_stmt_t *stmt,
const char *label) {
Assert(stmt != null && label != null);
stmt->base.loc = scc_pos_create();
stmt->base.type = SCC_AST_STMT_GOTO;
stmt->goto_stmt.label = label;
stmt->goto_stmt._target = null;
}
static inline void scc_ast_stmt_label_init(scc_ast_stmt_t *stmt,
const char *label,
scc_ast_stmt_t *body) {
Assert(stmt != null);
stmt->base.loc = scc_pos_create();
stmt->base.type = SCC_AST_STMT_LABEL;
stmt->label_stmt.label = label;
stmt->label_stmt.stmt = body;
}
static inline void scc_ast_expr_binary_init(scc_ast_expr_t *expr,
scc_ast_expr_op_t op,
scc_ast_expr_t *lhs,
scc_ast_expr_t *rhs) {
Assert(expr != null && lhs != null && rhs != null);
expr->base.loc = scc_pos_create();
expr->base.type = SCC_AST_EXPR_BINARY;
expr->binary.op = op;
expr->binary.lhs = lhs;
expr->binary.rhs = rhs;
}
static inline void scc_ast_expr_unary_init(scc_ast_expr_t *expr,
scc_ast_expr_op_t op,
scc_ast_expr_t *operand) {
Assert(expr != null && operand != null);
expr->base.loc = scc_pos_create();
expr->base.type = SCC_AST_EXPR_UNARY;
expr->unary.op = op;
expr->unary.operand = operand;
}
static inline void scc_ast_expr_cond_init(scc_ast_expr_t *expr,
scc_ast_expr_t *cond,
scc_ast_expr_t *then_expr,
scc_ast_expr_t *else_expr) {
Assert(expr != null && cond != null && then_expr != null &&
else_expr != null);
expr->base.loc = scc_pos_create();
expr->base.type = SCC_AST_EXPR_COND;
expr->cond.cond = cond;
expr->cond.then_expr = then_expr;
expr->cond.else_expr = else_expr;
}
// args can be null
static inline void scc_ast_expr_call_init(scc_ast_expr_t *expr,
scc_ast_expr_t *callee,
scc_ast_expr_vec_t *args) {
Assert(expr != null && callee != null);
expr->base.loc = scc_pos_create();
expr->base.type = SCC_AST_EXPR_CALL;
expr->call.callee = callee;
expr->call._target = null;
if (args == null) {
scc_vec_init(expr->call.args);
} else {
expr->call.args = *args;
}
}
// SCC_AST_EXPR_ARRAY_SUBSCRIPT, // 数组下标
static inline void scc_ast_expr_array_subscript_init(scc_ast_expr_t *expr,
scc_ast_expr_t *array,
scc_ast_expr_t *index) {
Assert(expr != null && array != null && index != null);
expr->base.loc = scc_pos_create();
expr->base.type = SCC_AST_EXPR_ARRAY_SUBSCRIPT;
expr->subscript.array = array;
expr->subscript.index = index;
}
static inline void _scc_ast_expr_member_init(scc_ast_expr_t *expr,
scc_ast_node_type_t type,
scc_ast_expr_t *object,
const char *member) {
Assert(expr != null && object != null && member != null);
expr->base.loc = scc_pos_create();
expr->base.type = type;
expr->member.base = object;
expr->member.name = member;
expr->member._target_idx = 0;
}
static inline void scc_ast_expr_member_init(scc_ast_expr_t *expr,
scc_ast_expr_t *object,
const char *member) {
_scc_ast_expr_member_init(expr, SCC_AST_EXPR_MEMBER, object, member);
}
static inline void scc_ast_expr_ptr_member_init(scc_ast_expr_t *expr,
scc_ast_expr_t *object,
const char *member) {
_scc_ast_expr_member_init(expr, SCC_AST_EXPR_PTR_MEMBER, object, member);
}
static inline void scc_ast_expr_cast_init(scc_ast_expr_t *expr,
scc_ast_type_t *type,
scc_ast_expr_t *operand) {
Assert(expr != null && type != null && operand != null);
expr->base.loc = scc_pos_create();
expr->base.type = SCC_AST_EXPR_CAST;
expr->cast.type = type;
expr->cast.expr = operand;
}
// type and target_expr can be null but it only one of them can be null
static inline void scc_ast_expr_sizeof_init(scc_ast_expr_t *expr,
scc_ast_type_t *type,
scc_ast_expr_t *target_expr) {
Assert(expr != null);
expr->base.loc = scc_pos_create();
expr->base.type = SCC_AST_EXPR_SIZE_OF;
expr->attr_of.type = type;
expr->attr_of.expr = target_expr;
}
// type and target_expr can be null but it only one of them can be null
static inline void scc_ast_expr_alignof_init(scc_ast_expr_t *expr,
scc_ast_type_t *type,
scc_ast_expr_t *target_expr) {
Assert(expr != null);
expr->base.loc = scc_pos_create();
expr->base.type = SCC_AST_EXPR_SIZE_OF;
expr->attr_of.type = type;
expr->attr_of.expr = target_expr;
}
// lhs_exprs and rhs_exprs can be null
static inline void scc_ast_expr_compound_init(scc_ast_expr_t *expr,
scc_ast_expr_t *base,
scc_ast_expr_vec_t *lhs_exprs,
scc_ast_expr_vec_t *rhs_exprs) {
Assert(expr != null && base != null);
expr->base.loc = scc_pos_create();
expr->base.type = SCC_AST_EXPR_COMPOUND;
expr->compound.base = base;
if (lhs_exprs == null) {
scc_vec_init(expr->compound.lhs_exprs);
} else {
expr->compound.lhs_exprs = *lhs_exprs;
scc_vec_init(*lhs_exprs);
}
if (rhs_exprs == null) {
scc_vec_init(expr->compound.rhs_exprs);
} else {
expr->compound.rhs_exprs = *rhs_exprs;
scc_vec_init(*rhs_exprs);
}
}
static inline void scc_ast_expr_literal_init(scc_ast_expr_t *expr,
scc_ast_node_type_t type,
const char *value, cbool owned) {
Assert(expr != null && value != null);
expr->base.loc = scc_pos_create();
expr->base.type = type;
expr->literal.lexme = value;
expr->literal.owned = owned;
}
static inline void scc_ast_expr_literal_int_init(scc_ast_expr_t *expr,
const char *value,
cbool owned) {
scc_ast_expr_literal_init(expr, SCC_AST_EXPR_INT_LITERAL, value, owned);
}
static inline void scc_ast_expr_literal_float_init(scc_ast_expr_t *expr,
const char *value,
cbool owned) {
scc_ast_expr_literal_init(expr, SCC_AST_EXPR_FLOAT_LITERAL, value, owned);
}
static inline void scc_ast_expr_literal_char_init(scc_ast_expr_t *expr,
const char *value,
cbool owned) {
scc_ast_expr_literal_init(expr, SCC_AST_EXPR_CHAR_LITERAL, value, owned);
}
static inline void scc_ast_expr_literal_string_init(scc_ast_expr_t *expr,
const char *value,
cbool owned) {
scc_ast_expr_literal_init(expr, SCC_AST_EXPR_STRING_LITERAL, value, owned);
}
static inline void scc_ast_expr_identifier_init(scc_ast_expr_t *expr,
const char *name) {
Assert(expr != null && name != null);
expr->base.loc = scc_pos_create();
expr->base.type = SCC_AST_EXPR_IDENTIFIER;
expr->identifier.name = name;
expr->identifier._target = null;
}
static inline void scc_ast_expr_lvalue_init(scc_ast_expr_t *expr,
scc_ast_type_t *type) {
Assert(expr != null && type != null);
expr->base.loc = scc_pos_create();
expr->base.type = SCC_AST_EXPR_LVALUE;
expr->lvalue.type = type;
}
// have defined builtin type
static inline void _scc_ast_type_builtin_init(scc_ast_type_t *type,
scc_ast_builtin_type_t builtin) {
Assert(type != null);
type->base.loc = scc_pos_create();
type->base.type = SCC_AST_TYPE_BUILTIN;
type->builtin.type = builtin;
type->quals = (scc_ast_decl_specifier_t){0}; // FIXME
}
static inline void scc_ast_type_pointer_init(scc_ast_type_t *type,
scc_ast_type_t *pointee) {
Assert(type != null && pointee != null);
type->base.loc = scc_pos_create();
type->base.type = SCC_AST_TYPE_POINTER;
type->quals = (scc_ast_decl_specifier_t){0}; // FIXME
type->pointer.pointee = pointee;
}
// size can be null
static inline void scc_ast_type_array_init(scc_ast_type_t *type,
scc_ast_type_t *element,
scc_ast_expr_t *size) {
Assert(type != null && element != null);
type->base.loc = scc_pos_create();
type->base.type = SCC_AST_TYPE_ARRAY;
type->quals = (scc_ast_decl_specifier_t){0}; // FIXME
type->array.element = element;
type->array.size = size;
}
// return_type and params can be null
static inline void scc_ast_type_function_init(scc_ast_type_t *type,
scc_ast_type_t *return_type,
scc_ast_decl_vec_t *params) {
Assert(type != null);
type->base.loc = scc_pos_create();
type->base.type = SCC_AST_TYPE_FUNCTION;
type->function.return_type = return_type;
type->quals = (scc_ast_decl_specifier_t){0}; // FIXME
if (params == null) {
scc_vec_init(type->function.param_types);
} else {
type->function.param_types = *params;
scc_vec_init(*params);
}
}
static inline void _scc_ast_type_record_init(scc_ast_type_t *type,
scc_ast_node_type_t type_kind,
const char *name,
scc_ast_decl_t *decl) {
Assert(type != null);
type->base.loc = scc_pos_create();
type->base.type = type_kind;
type->quals = (scc_ast_decl_specifier_t){0}; // FIXME
type->record.name = name;
type->record.decl = decl;
}
// name and decl can be null
static inline void scc_ast_type_struct_init(scc_ast_type_t *type,
const char *name,
scc_ast_decl_t *decl) {
_scc_ast_type_record_init(type, SCC_AST_TYPE_STRUCT, name, decl);
}
// name and decl can be null
static inline void scc_ast_type_union_init(scc_ast_type_t *type,
const char *name,
scc_ast_decl_t *decl) {
_scc_ast_type_record_init(type, SCC_AST_TYPE_UNION, name, decl);
}
// name and decl can be null
static inline void scc_ast_type_enum_init(scc_ast_type_t *type,
const char *name,
scc_ast_decl_t *decl) {
Assert(type != null);
type->base.loc = scc_pos_create();
type->base.type = SCC_AST_TYPE_ENUM;
type->quals = (scc_ast_decl_specifier_t){0}; // FIXME
type->enumeration.name = name;
type->enumeration.decl = decl;
}
static inline void scc_ast_type_typedef_init(scc_ast_type_t *type,
const char *name,
scc_ast_decl_t *target) {
Assert(type != null && target != null);
type->base.loc = scc_pos_create();
type->base.type = SCC_AST_TYPE_TYPEDEF;
type->quals = (scc_ast_decl_specifier_t){0}; // FIXME
type->typedef_type.name = name;
type->typedef_type.decl = target;
}
#endif /* __SCC_AST_H__ */
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