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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the Apache 2.0 License.
// See the LICENSE file in the project root for more information.
using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Numerics;
using System.Reflection;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.Security;
using System.Text;
using Microsoft.Scripting.Runtime;
using Microsoft.Scripting.Utils;
using IronPython;
using IronPython.Runtime;
using IronPython.Runtime.Exceptions;
using IronPython.Runtime.Operations;
using IronPython.Runtime.Types;
[assembly: PythonModule("sys", typeof(IronPython.Modules.SysModule))]
namespace IronPython.Modules {
public static class SysModule {
public const string __doc__ = "Provides access to functions which query or manipulate the Python runtime.";
public const int api_version = 0;
// argv is set by PythonContext and only on the initial load
public static readonly string byteorder = BitConverter.IsLittleEndian ? "little" : "big";
// builtin_module_names is set by PythonContext and updated on reload
public const string copyright = "Copyright (c) IronPython Team";
private static string GetPrefix() {
string prefix;
#if FEATURE_ASSEMBLY_LOCATION
try {
prefix = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
} catch (SecurityException) {
prefix = String.Empty;
} catch (ArgumentException) {
prefix = String.Empty;
} catch (MethodAccessException) {
prefix = String.Empty;
}
#else
prefix = String.Empty;
#endif
return prefix;
}
/// <summary>
/// Returns detailed call statistics. Not implemented in IronPython and always returns None.
/// </summary>
public static object callstats() {
return null;
}
/// <summary>
/// Handles output of the expression statement.
/// Prints the value and sets the __builtin__._
/// </summary>
[PythonHidden]
[Documentation("displayhook(object) -> None\r\n\r\nPrint an object to sys.stdout and also save it in __builtin__._")]
public static void displayhookImpl(CodeContext/*!*/ context, object value) {
// based on the pseudcode: https://docs.python.org/3/library/sys.html#sys.displayhook
if (value == null) return;
context.LanguageContext.BuiltinModuleDict["_"] = null;
var text = PythonOps.Repr(context, value);
try {
PythonOps.Print(context, text);
} catch (EncoderFallbackException) {
var stdout = context.LanguageContext.SystemStandardOut;
var encoding = PythonOps.GetBoundAttr(context, stdout, "encoding") as string;
var bytes = StringOps.encode(context, text, encoding, "backslashreplace");
// TODO: write the bytes directly to the buffer if possible
text = bytes.decode(context, encoding, "strict");
PythonOps.Print(context, text);
}
context.LanguageContext.BuiltinModuleDict["_"] = value;
}
public static BuiltinFunction displayhook = BuiltinFunction.MakeFunction(
nameof(displayhook),
ArrayUtils.ConvertAll(typeof(SysModule).GetMember(nameof(displayhookImpl)), (x) => (MethodBase)x),
typeof(SysModule)
);
public static readonly BuiltinFunction __displayhook__ = displayhook;
public const int dllhandle = 0;
[PythonHidden]
[Documentation(@"excepthook(exctype, value, traceback) -> None
Handle an exception by displaying it with a traceback on sys.stderr._")]
public static void excepthookImpl(CodeContext/*!*/ context, object exctype, object value, object traceback) {
PythonContext pc = context.LanguageContext;
PythonOps.PrintWithDest(
context,
pc.SystemStandardError,
pc.FormatException(PythonExceptions.ToClr(value))
);
}
public static readonly BuiltinFunction excepthook = BuiltinFunction.MakeFunction(
"excepthook",
ArrayUtils.ConvertAll(typeof(SysModule).GetMember(nameof(SysModule.excepthookImpl)), (x) => (MethodBase)x),
typeof(SysModule)
);
public static readonly BuiltinFunction __excepthook__ = excepthook;
public static int getcheckinterval() {
throw PythonOps.NotImplementedError("IronPython does not support sys.getcheckinterval");
}
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA1801:ReviewUnusedParameters", MessageId = "value")]
public static void setcheckinterval(int value) {
throw PythonOps.NotImplementedError("IronPython does not support sys.setcheckinterval");
}
// warnoptions is set by PythonContext and updated on each reload
public static PythonTuple exc_info(CodeContext/*!*/ context) {
return PythonOps.GetExceptionInfo(context);
}
// exec_prefix and executable are set by PythonContext and updated on each reload
public static string intern(object o) {
if (!(o is string s)) {
throw PythonOps.TypeError("intern: argument must be string");
}
return string.Intern(s);
}
public static void exit() {
exit(null);
}
public static void exit(object code) {
if (code == null) {
throw new PythonExceptions._SystemExit().InitAndGetClrException();
} else {
// throw as a python exception here to get the args set.
throw new PythonExceptions._SystemExit().InitAndGetClrException(code);
}
}
public static string getdefaultencoding(CodeContext/*!*/ context) {
return context.LanguageContext.GetDefaultEncodingName();
}
public static string getfilesystemencoding() {
if (Environment.OSVersion.Platform == PlatformID.Unix)
return "utf-8";
return "mbcs";
}
[PythonHidden]
public static TraceBackFrame/*!*/ _getframeImpl(CodeContext/*!*/ context) {
return _getframeImpl(context, 0);
}
[PythonHidden]
public static TraceBackFrame/*!*/ _getframeImpl(CodeContext/*!*/ context, int depth) {
return _getframeImpl(context, depth, PythonOps.GetFunctionStack());
}
internal static TraceBackFrame/*!*/ _getframeImpl(CodeContext/*!*/ context, int depth, List<FunctionStack> stack) {
if (depth < stack.Count) {
TraceBackFrame cur = null;
for (int i = 0; i < stack.Count - depth; i++) {
var elem = stack[i];
if (elem.Frame != null) {
// we previously handed out a frame here, hand out the same one now
cur = elem.Frame;
} else {
// create a new frame and save it for future calls
cur = new TraceBackFrame(
context,
Builtin.globals(elem.Context),
Builtin.locals(elem.Context),
elem.Code,
cur
);
stack[i] = new FunctionStack(elem.Context, elem.Code, cur);
}
}
return cur;
}
throw PythonOps.ValueError("call stack is not deep enough");
}
public static int getsizeof(object o) {
return ObjectOps.__sizeof__(o);
}
public static PythonTuple getwindowsversion() {
var osVer = Environment.OSVersion;
return new windows_version(
osVer.Version.Major,
osVer.Version.Minor,
osVer.Version.Build,
(int)osVer.Platform
#if FEATURE_OS_SERVICEPACK
, osVer.ServicePack
#else
, ""
#endif
);
}
[PythonType("sys.getwindowsversion"), PythonHidden]
public class windows_version : PythonTuple {
internal windows_version(int major, int minor, int build, int platform, string service_pack)
: base(new object[] { major, minor, build, platform, service_pack }) {
this.major = major;
this.minor = minor;
this.build = build;
this.platform = platform;
this.service_pack = service_pack;
}
public readonly int major;
public readonly int minor;
public readonly int build;
public readonly int platform;
public readonly string service_pack;
public const int n_fields = 5;
public const int n_sequence_fields = 5;
public const int n_unnamed_fields = 0;
public override string __repr__(CodeContext context) {
return
$"sys.getwindowsversion(major={major}, minor={minor}, build={build}, platform={platform}, service_pack='{service_pack}')";
}
}
// hex_version is set by PythonContext
public const int maxsize = Int32.MaxValue;
public const int maxunicode = 0x10ffff;
// modules is set by PythonContext and only on the initial load
// path is set by PythonContext and only on the initial load
public static readonly string prefix = GetPrefix();
// ps1 and ps2 are set by PythonContext and only on the initial load
// setdefaultencoding has been removed in Python 3
#if PROFILE_SUPPORT
// not enabled because we don't yet support tracing built-in functions. Doing so is a little
// difficult because it's hard to flip tracing on/off for them w/o a perf overhead in the
// non-profiling case.
public static void setprofile(CodeContext/*!*/ context, TracebackDelegate o) {
PythonContext pyContext = context.LanguageContext;
pyContext.EnsureDebugContext();
if (o == null) {
pyContext.UnregisterTracebackHandler();
} else {
pyContext.RegisterTracebackHandler();
}
// Register the trace func with the listener
pyContext.TracebackListener.SetProfile(o);
}
#endif
public static void settrace(CodeContext/*!*/ context, object o) {
context.LanguageContext.SetTrace(o);
}
public static object call_tracing(CodeContext/*!*/ context, object func, PythonTuple args) {
return context.LanguageContext.CallTracing(func, args);
}
public static object gettrace(CodeContext/*!*/ context) {
return context.LanguageContext.GetTrace();
}
public static void setrecursionlimit(CodeContext/*!*/ context, int limit) {
context.LanguageContext.RecursionLimit = limit;
}
public static int getrecursionlimit(CodeContext/*!*/ context) {
return context.LanguageContext.RecursionLimit;
}
// stdin, stdout, stderr, __stdin__, __stdout__, and __stderr__ added by PythonContext
// version and version_info are set by PythonContext
public static PythonTuple subversion = PythonTuple.MakeTuple("IronPython", "", "");
public static readonly string winver = CurrentVersion.Series;
#region Special types
[PythonHidden, PythonType("flags"), DontMapIEnumerableToIter]
public sealed class SysFlags : PythonTuple {
internal SysFlags() : base(new object[n_fields] { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }) { }
private const int INDEX_DEBUG = 0;
private const int INDEX_INSPECT = 1;
private const int INDEX_INTERACTIVE = 2;
private const int INDEX_OPTIMIZE = 3;
private const int INDEX_DONT_WRITE_BYTECODE = 4;
private const int INDEX_NO_USER_SITE = 5;
private const int INDEX_NO_SITE = 6;
private const int INDEX_IGNORE_ENVIRONMENT = 7;
private const int INDEX_TABCHECK = 8;
private const int INDEX_VERBOSE = 9;
private const int INDEX_UNICODE = 10;
private const int INDEX_BYTES_WARNING = 11;
private const int INDEX_QUIET = 12;
public const int n_fields = 13;
public const int n_sequence_fields = 13;
public const int n_unnamed_fields = 0;
public override string __repr__(CodeContext context) {
var fields = new string[n_fields] {
$"{nameof(debug)}={debug}",
$"{nameof(inspect)}={inspect}",
$"{nameof(interactive)}={interactive}",
$"{nameof(optimize)}={optimize}",
$"{nameof(dont_write_bytecode)}={dont_write_bytecode}",
$"{nameof(no_user_site)}={no_user_site}",
$"{nameof(no_site)}={no_site}",
$"{nameof(ignore_environment)}={ignore_environment}",
$"{nameof(tabcheck)}={tabcheck}",
$"{nameof(verbose)}={verbose}",
$"{nameof(unicode)}={unicode}",
$"{nameof(bytes_warning)}={bytes_warning}",
$"{nameof(quiet)}={quiet}",
};
return $"sys.flags({string.Join(", ", fields)})";
}
#region sys.flags API
public int debug {
get => (int)_data[INDEX_DEBUG];
internal set => _data[INDEX_DEBUG] = value;
}
public int inspect {
get => (int)_data[INDEX_INSPECT];
internal set => _data[INDEX_INSPECT] = value;
}
public int interactive {
get => (int)_data[INDEX_INTERACTIVE];
internal set => _data[INDEX_INTERACTIVE] = value;
}
public int optimize {
get => (int)_data[INDEX_OPTIMIZE];
internal set => _data[INDEX_OPTIMIZE] = value;
}
public int dont_write_bytecode {
get => (int)_data[INDEX_DONT_WRITE_BYTECODE];
internal set => _data[INDEX_DONT_WRITE_BYTECODE] = value;
}
public int no_user_site {
get => (int)_data[INDEX_NO_USER_SITE];
internal set => _data[INDEX_NO_USER_SITE] = value;
}
public int no_site {
get => (int)_data[INDEX_NO_SITE];
internal set => _data[INDEX_NO_SITE] = value;
}
public int ignore_environment {
get => (int)_data[INDEX_IGNORE_ENVIRONMENT];
internal set => _data[INDEX_IGNORE_ENVIRONMENT] = value;
}
public int tabcheck {
get => (int)_data[INDEX_TABCHECK];
internal set => _data[INDEX_TABCHECK] = value;
}
public int verbose {
get => (int)_data[INDEX_VERBOSE];
internal set => _data[INDEX_VERBOSE] = value;
}
public int unicode {
get => (int)_data[INDEX_UNICODE];
internal set => _data[INDEX_UNICODE] = value;
}
public int bytes_warning {
get => (int)_data[INDEX_BYTES_WARNING];
internal set => _data[INDEX_BYTES_WARNING] = value;
}
public int quiet {
get => (int)_data[INDEX_QUIET];
internal set => _data[INDEX_QUIET] = value;
}
#endregion
}
#endregion
// These values are based on the .NET 2 BigInteger in Microsoft.Scripting.Math
public static longinfo long_info = new longinfo(32, 4);
[PythonType("long_info"), PythonHidden]
public class longinfo : PythonTuple {
internal longinfo(int bits_per_digit, int sizeof_digit)
: base(new object[] {bits_per_digit, sizeof_digit}) {
this.bits_per_digit = bits_per_digit;
this.sizeof_digit = sizeof_digit;
}
public readonly int bits_per_digit;
public readonly int sizeof_digit;
public const int n_fields = 2;
public const int n_sequence_fields = 2;
public const int n_unnamed_fields = 0;
public override string __repr__(CodeContext context) {
return $"sys.long_info(bits_per_digit={bits_per_digit}, sizeof_digit={sizeof_digit})";
}
}
#if NETCOREAPP3_0
public static string float_repr_style = "short";
#else
public static string float_repr_style = "legacy";
#endif
public static floatinfo float_info = new floatinfo(
Double.MaxValue, // DBL_MAX
1024, // DBL_MAX_EXP
308, // DBL_MAX_10_EXP
// DBL_MIN
BitConverter.Int64BitsToDouble(BitConverter.IsLittleEndian ? 0x0010000000000000 : 0x0000000000001000),
-1021, // DBL_MIN_EXP
-307, // DBL_MIN_10_EXP
15, // DBL_DIG
53, // DBL_MANT_DIG
// DBL_EPSILON
BitConverter.Int64BitsToDouble(BitConverter.IsLittleEndian ? 0x3cb0000000000000 : 0x000000000000b03c),
2, // FLT_RADIX
1); // FLT_ROUNDS
[PythonType("float_info"), PythonHidden]
public class floatinfo : PythonTuple {
internal floatinfo(double max, int max_exp, int max_10_exp,
double min, int min_exp, int min_10_exp,
int dig, int mant_dig, double epsilon, int radix, int rounds)
: base(new object[] { max, max_exp, max_10_exp,
min, min_exp, min_10_exp,
dig, mant_dig, epsilon, radix, rounds}) {
this.max = max;
this.max_exp = max_exp;
this.max_10_exp = max_10_exp;
this.min = min;
this.min_exp = min_exp;
this.min_10_exp = min_10_exp;
this.dig = dig;
this.mant_dig = mant_dig;
this.epsilon = epsilon;
this.radix = radix;
this.rounds = rounds;
}
public readonly double max;
public readonly int max_exp;
public readonly int max_10_exp;
public readonly double min;
public readonly int min_exp;
public readonly int min_10_exp;
public readonly int dig;
public readonly int mant_dig;
public readonly double epsilon;
public readonly int radix;
public readonly int rounds;
public const int n_fields = 11;
public const int n_sequence_fields = 11;
public const int n_unnamed_fields = 0;
public override string __repr__(CodeContext context) {
return string.Format("sys.float_info(max={0}, max_exp={1}, max_10_exp={2}, " +
"min={3}, min_exp={4}, min_10_exp={5}, " +
"dig={6}, mant_dig={7}, epsilon={8}, radix={9}, rounds={10})",
max, max_exp, max_10_exp,
min, min_exp, min_10_exp,
dig, mant_dig, epsilon, radix, rounds);
}
}
public static hashinfo hash_info = new hashinfo(width: 32, modulus: int.MaxValue, inf: 314159, nan: 0, imag: 1000003, algorithm: "dotnet", hash_bits: 0, seed_bits:0, cutoff: 0);
[PythonType("hash_info"), PythonHidden]
public class hashinfo : PythonTuple {
internal hashinfo(int width, int modulus, int inf, int nan, int imag, string algorithm, int hash_bits, int seed_bits, int cutoff)
: base(new object[] { width, modulus, inf, nan, imag, algorithm, hash_bits, seed_bits, cutoff }) {
this.width = width;
this.modulus = modulus;
this.inf = inf;
this.nan = nan;
this.imag = imag;
this.algorithm = algorithm;
this.hash_bits = hash_bits;
this.seed_bits = seed_bits;
this.cutoff = cutoff;
}
public readonly int width;
public readonly int modulus;
public readonly int inf;
public readonly int nan;
public readonly int imag;
public readonly string algorithm;
public readonly int hash_bits;
public readonly int seed_bits;
public readonly int cutoff;
public const int n_fields = 11;
public const int n_sequence_fields = 11;
public const int n_unnamed_fields = 0;
public override string __repr__(CodeContext context) {
return $"sys.hash_info(width={width}, modulus={modulus}, inf={inf}, nan={nan}, imag={imag}, algorithm='{algorithm}', hash_bits={hash_bits}, seed_bits={seed_bits}, cutoff={cutoff})";
}
}
[SpecialName]
public static void PerformModuleReload(PythonContext/*!*/ context, PythonDictionary/*!*/ dict) {
dict["stdin"] = dict["__stdin__"];
dict["stdout"] = dict["__stdout__"];
dict["stderr"] = dict["__stderr__"];
if(RuntimeInformation.IsOSPlatform(OSPlatform.Windows)) {
dict["platform"] = "win32";
} else if(RuntimeInformation.IsOSPlatform(OSPlatform.Linux)) {
dict["platform"] = "posix";
} else if(RuntimeInformation.IsOSPlatform(OSPlatform.OSX)) {
dict["platform"] = "darwin";
} else {
dict["platform"] = "cli";
}
// !!! These fields do need to be reset on "reload(sys)". However, the initial value is specified by the
// engine elsewhere. For now, we initialize them just once to some default value
dict["warnoptions"] = new PythonList(0);
PublishBuiltinModuleNames(context, dict);
context.SetHostVariables(dict);
dict["meta_path"] = new PythonList(0);
dict["path_hooks"] = new PythonList(0);
// add zipimport to the path hooks for importing from zip files.
try {
if (Importer.ImportModule(
context.SharedClsContext, context.SharedClsContext.GlobalDict,
"zipimport", false, 0) is PythonModule zipimport) {
object zipimporter = PythonOps.GetBoundAttr(
context.SharedClsContext, zipimport, "zipimporter");
if (dict["path_hooks"] is PythonList path_hooks && zipimporter != null) {
path_hooks.Add(zipimporter);
}
}
} catch {
// this is not a fatal error, so we don't do anything.
}
dict["path_importer_cache"] = new PythonDictionary();
}
internal static void PublishBuiltinModuleNames(PythonContext/*!*/ context, PythonDictionary/*!*/ dict) {
object[] keys = new object[context.BuiltinModules.Keys.Count];
int index = 0;
foreach (object key in context.BuiltinModules.Keys) {
keys[index++] = key;
}
dict["builtin_module_names"] = PythonTuple.MakeTuple(keys);
}
}
}