TermiNexus
e25e8958f0
语法侧（M2.4）：ast/base.vp 枚举尾部追加 ASTKind.New；ast/exprs.vp 新增 NEW_SRC_*/NEW_LIFE_* 与 class New；ast/parser.vp 新增 _is_new_expr/_parse_new_expr（new 为软关键字，不进 Keyword 表，new=1/new.x/new(1) 仍是标识符）；ast/__init__.vp 再导出 New 与常量。 其余为既有 WIP 改动一并快照，保持基线一致（39 文件，+312/-237）。 未纳入：ctraits.vpi（已删除）、ctraits.vpnci、tomllib/（均未跟踪）。
234 lines
9.5 KiB
Plaintext
234 lines
9.5 KiB
Plaintext
from stdint import *
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# =============================================================================
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# POSIX Type Alias
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# Note: ssize_t has already been defined as t.CPtrDiffT in stdint.py, so we won’t repeat it here.
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# =============================================================================
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DIR: t.CTypedef = rawptr # Opaque directory stream handle
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mode_t: t.CTypedef = uint32 # File mode/permission bits
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pid_t: t.CTypedef = int32 # Process ID
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off_t: t.CTypedef = int64 # File offset (Linux x86_64)
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dev_t: t.CTypedef = uint64 # Device number
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ino_t: t.CTypedef = uint64 # inode number
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nlink_t: t.CTypedef = uint64 # Hard link count
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uid_t: t.CTypedef = uint32 # User ID
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gid_t: t.CTypedef = uint32 # Group ID
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blksize_t: t.CTypedef = int64 # File I/O block size
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blkcnt_t: t.CTypedef = int64 # Allocated block count
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time_t: t.CTypedef = int64 # Calendar time seconds
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# =============================================================================
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# open() Flags
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# =============================================================================
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define O_RDONLY = 0
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define O_WRONLY = 1
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define O_RDWR = 2
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define O_CREAT = 0o100
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define O_EXCL = 0o200
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define O_TRUNC = 0o1000
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define O_APPEND = 0o2000
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define O_NONBLOCK = 0o4000
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define O_CLOEXEC = 0o2000000
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# =============================================================================
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# access() Test Flags
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# =============================================================================
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define F_OK = 0 # File exists
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define R_OK = 4 # Read permission
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define W_OK = 2 # Write permission
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define X_OK = 1 # Execute permission
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# =============================================================================
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# stat struct st_mode Mask and Type Bits
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# =============================================================================
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define S_IFMT = 0o170000 # Type mask bits
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define S_IFSOCK = 0o140000 # Socket
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define S_IFLNK = 0o120000 # Symbolic link
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define S_IFREG = 0o100000 # Regular file
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define S_IFBLK = 0o060000 # Block device
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define S_IFDIR = 0o040000 # Directory
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define S_IFCHR = 0o020000 # Character device
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define S_IFIFO = 0o010000 # FIFO/pipe
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# Permission Bits
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define S_ISUID = 0o4000 # Set-user-ID
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define S_ISGID = 0o2000 # Set-group-ID
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define S_ISVTX = 0o1000 # Sticky bit
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define S_IRWXU = 0o700 # Read/write/execute permission
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define S_IRUSR = 0o400 # User read permission
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define S_IWUSR = 0o200 # User write permission
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define S_IXUSR = 0o100 # User execute permission
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define S_IRWXG = 0o070 # Read/write/execute permission
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define S_IRGRP = 0o040 # Read permission
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define S_IWGRP = 0o020 # Write
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define S_IXGRP = 0o010 # Execute
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define S_IRWXO = 0o007 # Read/write/execute permission
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define S_IROTH = 0o004 # Other read permission
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define S_IWOTH = 0o002 # Other write permission
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define S_IXOTH = 0o001 # Other execute permission
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# =============================================================================
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# lseek() whence values
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# =============================================================================
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define SEEK_SET = 0
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define SEEK_CUR = 1
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define SEEK_END = 2
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# =============================================================================
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# Path/name length limits
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# =============================================================================
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define PATH_MAX = 4096
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define NAME_MAX = 255
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# =============================================================================
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# sysconf() parameters
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# =============================================================================
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define _SC_NPROCESSORS_ONLN = 84
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define _SC_PAGESIZE = 30
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define _SC_CLK_TCK = 2
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# =============================================================================
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# dirent struct d_type values
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# =============================================================================
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define DT_UNKNOWN = 0
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define DT_FIFO = 1
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define DT_CHR = 2
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define DT_DIR = 4
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define DT_BLK = 6
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define DT_REG = 8
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define DT_LNK = 10
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define DT_SOCK = 12
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define DT_WHT = 14
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# =============================================================================
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# waitpid() options
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# =============================================================================
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define WNOHANG = 1
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define WUNTRACED = 2
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define WCONTINUED = 8
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# =============================================================================
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# Struct: Linux x86_64 Layout
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# =============================================================================
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# struct stat (144 bytes, Linux x86_64 glibc layout)
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# Note: st_atim/st_mtim/st_ctim in C are struct timespec { tv_sec; tv_nsec; }
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# Here split into _sec/_nsec two LONGLONG fields to maintain binary compatibility
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class Stat:
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st_dev: dev_t # @ 0
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st_ino: ino_t # @ 8
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st_nlink: nlink_t # @ 16
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st_mode: mode_t # @ 24
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st_uid: uid_t # @ 28
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st_gid: gid_t # @ 32
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__pad0: INT # @ 36
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st_rdev: dev_t # @ 40
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st_size: off_t # @ 48
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st_blksize: blksize_t # @ 56
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st_blocks: blkcnt_t # @ 64
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st_atim_sec: time_t # @ 72
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st_atim_nsec: LONGLONG # @ 80
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st_mtim_sec: time_t # @ 88
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st_mtim_nsec: LONGLONG # @ 96
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st_ctim_sec: time_t # @ 104
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st_ctim_nsec: LONGLONG # @ 112
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__unused0: LONGLONG # @ 120
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__unused1: LONGLONG # @ 128
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__unused2: LONGLONG # @ 136
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# struct dirent (Linux x86_64, d_name is char[256])
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# Note: d_name is actually a fixed-length char[256], TransPyC uses CHARPTR as a placeholder (8 bytes).
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# Users usually access it via the read-only pointer returned by readdir, not by directly allocating a Dirent structure.
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class Dirent():
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d_ino: ino_t # @ 0
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d_off: off_t # @ 8
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d_reclen: USHORT # @ 16
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d_type: BYTE # @ 18
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d_name: CHARPTR # @ 19 (actually char[256], this is a placeholder)
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# =============================================================================
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# File operations (10)
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# =============================================================================
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extern def open(path: const str, oflag: INT, *args) -> INT
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extern def close(fd: INT) -> INT
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extern def read(fd: INT, buf: bytes, count: sizet) -> ssize_t
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extern def write(fd: INT, buf: const bytes, count: sizet) -> ssize_t
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extern def lseek(fd: INT, offset: off_t, whence: INT) -> off_t
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extern def unlink(path: const str) -> INT
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extern def access(path: const str, amode: INT) -> INT
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extern def realpath(path: const str, resolved: CHARPTR) -> CHARPTR
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extern def rename(oldpath: const str, newpath: const str) -> INT
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extern def chmod(path: const str, mode: mode_t) -> INT
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# =============================================================================
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# stat series (2)
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# =============================================================================
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extern def stat(path: const str, buf: Stat*) -> INT
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extern def fstat(fd: INT, buf: Stat*) -> INT
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# =============================================================================
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# Directory operations (6)
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# =============================================================================
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extern def opendir(name: const str) -> DIR
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extern def readdir(dirp: DIR) -> Dirent*
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extern def closedir(dirp: DIR) -> INT
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extern def mkdir(path: const str, mode: mode_t) -> INT
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extern def rmdir(path: const str) -> INT
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extern def getcwd(buf: CHARPTR, size: sizet) -> CHARPTR
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extern def chdir(path: const str) -> INT
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# =============================================================================
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# Process operations (8)
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# =============================================================================
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extern def fork() -> pid_t
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extern def execvp(file: const str, argv: CHARPTR*) -> INT
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extern def execv(path: const str, argv: CHARPTR*) -> INT
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extern def waitpid(pid: pid_t, status: INT*, options: INT) -> pid_t
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extern def pipe(fds: INT*) -> INT
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extern def dup2(oldfd: INT, newfd: INT) -> INT
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extern def _exit(status: INT)
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extern def getpid() -> pid_t
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# =============================================================================
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# Environment operations (4)
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# =============================================================================
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extern def getenv(name: const str) -> CHARPTR
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extern def setenv(name: const str, value: const str, overwrite: INT) -> INT
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extern def sysconf(name: INT) -> LONG
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extern def isatty(fd: INT) -> INT
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# =============================================================================
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# Inline macros (C macros, implemented as normal functions, not marked as extern)
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# =============================================================================
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# st_mode type determination
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def S_ISREG(mode: mode_t) -> bool: return (mode & S_IFMT) == S_IFREG
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def S_ISDIR(mode: mode_t) -> bool: return (mode & S_IFMT) == S_IFDIR
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def S_ISLNK(mode: mode_t) -> bool: return (mode & S_IFMT) == S_IFLNK
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def S_ISCHR(mode: mode_t) -> bool: return (mode & S_IFMT) == S_IFCHR
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def S_ISBLK(mode: mode_t) -> bool: return (mode & S_IFMT) == S_IFBLK
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def S_ISFIFO(mode: mode_t) -> bool: return (mode & S_IFMT) == S_IFIFO
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def S_ISSOCK(mode: mode_t) -> bool: return (mode & S_IFMT) == S_IFSOCK
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# waitpid status parsing
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def WIFEXITED(status: INT) -> bool: return (status & 0x7F) == 0
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def WEXITSTATUS(status: INT) -> INT: return (status >> 8) & 0xFF
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def WIFSIGNALED(status: INT) -> bool: return ((status & 0x7F) != 0) and ((status & 0x7F) != 0x7F)
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def WTERMSIG(status: INT) -> INT: return status & 0x7F
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