Update all position tracking calls in lex_parser.c to use the scc_pos_* function family (scc_pos_next, scc_pos_next_line) instead of the deprecated core_pos_* variants. This ensures consistency with the scc naming convention and prepares for future removal of the old core functions.
lexer 词法分析 parse 语法分析 ast 抽象语法树 sema 语义分析 ir 中间代码标识 opt 优化器 codegen 代码生成 target 目标平台支持