static List <Object> ReadDelimitedList(char delim, PushbackTextReader r, bool isRecursive, object opts)
{
LineNumberingTextReader lntr = r as LineNumberingTextReader;
int firstLine = lntr != null ? lntr.LineNumber : -1;
List <Object> a = new List <object>();
for (; ;)
{
int ch = r.Read();
while (isWhitespace(ch))
{
ch = r.Read();
}
if (ch == -1)
{
if (firstLine < 0)
{
throw new EndOfStreamException("EOF while reading");
}
else
{
throw new EndOfStreamException("EOF while reading, starting at line " + firstLine);
}
}
if (ch == delim)
{
break;
}
IFn macroFn = getMacro(ch);
if (macroFn != null)
{
Object mret = macroFn.invoke(r, (char)ch, opts);
//no op macros return the reader
if (mret != r)
{
a.Add(mret);
}
}
else
{
Unread(r, ch);
object o = read(r, true, null, isRecursive, opts);
if (o != r)
{
a.Add(o);
}
}
}
return(a);
}
static int readUnicodeChar(PushbackTextReader r, int initch, int radix, int length, bool exact)
{
int uc = CharValueInRadix(initch, radix);
if (uc == -1)
{
throw new ArgumentException("Invalid digit: " + (char)initch);
}
int i = 1;
for (; i < length; ++i)
{
int ch = r.Read();
if (ch == -1 || isWhitespace(ch) || isMacro(ch))
{
Unread(r, ch);
break;
}
int d = CharValueInRadix(ch, radix);
if (d == -1)
{
throw new ArgumentException("Invalid digit: " + (char)ch);
}
uc = uc * radix + d;
}
if (i != length && exact)
{
throw new ArgumentException("Invalid character length: " + i + ", should be: " + length);
}
return(uc);
}
static object readNumber(PushbackTextReader r, char initch)
{
StringBuilder sb = new StringBuilder();
sb.Append(initch);
for (; ;)
{
int ch = r.Read();
if (ch == -1 || isWhitespace(ch) || isMacro(ch))
{
Unread(r, ch);
break;
}
sb.Append((char)ch);
}
string s = sb.ToString();
object n = MatchNumber(s);
if (n == null)
{
throw new FormatException("Invalid number: " + s);
}
return(n);
}
public static List <Object> readDelimitedList(char delim, PushbackTextReader r, bool isRecursive)
{
List <Object> a = new List <object>();
for (; ;)
{
int ch = r.Read();
while (isWhitespace(ch))
{
ch = r.Read();
}
if (ch == -1)
{
throw new EndOfStreamException("EOF while reading");
}
if (ch == delim)
{
break;
}
IFn macroFn = getMacro(ch);
if (macroFn != null)
{
Object mret = macroFn.invoke(r, (char)ch);
//no op macros return the reader
if (mret != r)
{
a.Add(mret);
}
}
else
{
Unread(r, ch);
object o = read(r, true, null, isRecursive);
if (o != r)
{
a.Add(o);
}
}
}
return(a);
}
protected override object Read(PushbackTextReader r, char semicolon, object opts)
{
int ch;
do
{
ch = r.Read();
} while (ch != -1 && ch != '\n' && ch != '\r');
return(r);
}
protected override object Read(PushbackTextReader r, char doublequote)
{
StringBuilder sb = new StringBuilder();
for (int ch = r.Read(); ch != '"'; ch = r.Read())
{
if (ch == -1)
{
throw new EndOfStreamException("EOF while reading regex");
}
sb.Append((char)ch);
if (ch == '\\') //escape
{
ch = r.Read();
if (ch == -1)
{
throw new EndOfStreamException("EOF while reading regex");
}
sb.Append((char)ch);
}
}
return(new Regex(sb.ToString()));
}
protected override object Read(PushbackTextReader r, char hash)
{
int ch = r.Read();
if (ch == -1)
{
throw new EndOfStreamException("EOF while reading character");
}
IFn fn = _dispatchMacros[ch];
if (fn == null)
{
throw new Exception(String.Format("No dispatch macro for: {0}", (char)ch));
}
return(fn.invoke(r, (char)ch));
}
static string readToken(PushbackTextReader r, char initch)
{
StringBuilder sb = new StringBuilder();
sb.Append(initch);
for (; ;)
{
int ch = r.Read();
if (ch == -1 || isWhitespace(ch) || isTerminatingMacro(ch))
{
Unread(r, ch);
return(sb.ToString());
}
sb.Append((char)ch);
}
}
static string readSimpleToken(PushbackTextReader r, char initch, bool leadConstituent)
{
if (leadConstituent && NonConstituent(initch))
{
throw new InvalidOperationException("Invalid leading characters: " + (char)initch);
}
StringBuilder sb = new StringBuilder();
sb.Append(initch);
for (; ;)
{
int ch = r.Read();
if (ch == -1 || isWhitespace(ch) || isTerminatingMacro(ch))
{
Unread(r, ch);
return(sb.ToString());
}
sb.Append((char)ch);
}
}
protected override object Read(PushbackTextReader r, char hash, object opts)
{
int ch = r.Read();
if (ch == -1)
{
throw new EndOfStreamException("EOF while reading character");
}
IFn fn = _dispatchMacros[ch];
if (fn == null)
{
// try tagged reader
if (Char.IsLetter((char)ch))
{
Unread(r, ch);
return(_taggedReader.invoke(r, (char)ch, opts));
}
throw new InvalidOperationException(String.Format("No dispatch macro for: {0}", (char)ch));
}
return(fn.invoke(r, (char)ch, opts));
}
protected override object Read(PushbackTextReader r, char pct)
{
int ch = r.Read();
Unread(r, ch);
//% alone is first arg
if (ch == -1 || isWhitespace(ch) || isTerminatingMacro(ch))
{
return(registerArg(1));
}
//object n = ReadAux(r, true, null, true);
object n = ReadAux(r);
if (n.Equals(Compiler._AMP_))
{
return(registerArg(-1));
}
if (!Util.IsNumeric(n))
{
throw new ArgumentException("arg literal must be %, %& or %integer");
}
return(registerArg(Util.ConvertToInt(n)));
}
protected override object Read(PushbackTextReader r, char comma)
{
int ch = r.Read();
if (ch == -1)
{
throw new EndOfStreamException("EOF while reading character");
}
if (ch == '@')
{
//object o = read(r, true, null, true);
object o = ReadAux(r);
return(RT.list(UNQUOTE_SPLICING, o));
}
else
{
Unread(r, ch);
//object o = read(r, true, null, true);
object o = ReadAux(r);
//return new Unquote(o);
// per Rev 1184
return(RT.list(UNQUOTE, o));
}
}
public override object invoke(object reader, object colon, object opts)
{
PushbackTextReader r = reader as PushbackTextReader;
// Read ns symbol
object osym = read(r, true, null, false, opts);
Symbol sym = osym as Symbol;
if (sym == null || sym.Namespace != null)
{
throw new Exception("Namespaced map must specify a valid namespace: " + osym);
}
string ns = sym.Name;
// Read map
int nextChar = r.Read();
while (isWhitespace(nextChar))
{
nextChar = r.Read();
}
if ('{' != nextChar)
{
throw new Exception("Namespaced map must specify a map");
}
List <object> kvs = ReadDelimitedList('}', r, true, opts);
if ((kvs.Count & 1) == 1)
{
throw new Exception("Namespaced map literal must contain an even number of forms");
}
// Construct output map
object[] a = new object[kvs.Count];
// IPersistentMap m = RT.map();
using (var iterator = kvs.GetEnumerator())
{
for (int i = 0; iterator.MoveNext(); i += 2)
{
var key = iterator.Current;
iterator.MoveNext();
var val = iterator.Current;
Keyword kw = key as Keyword;
if (kw != null)
{
if (kw.Namespace == null)
{
key = Keyword.intern(ns, kw.Name);
}
else if (kw.Namespace.Equals("_"))
{
key = Keyword.intern(null, kw.Name);
}
}
else
{
Symbol s = key as Symbol;
if (s != null)
{
if (s.Namespace == null)
{
key = Symbol.intern(ns, s.Name);
}
else if (s.Namespace.Equals("_"))
{
key = Symbol.intern(null, s.Name);
}
}
}
a[i] = key;
a[i + 1] = val;
}
}
return(RT.map(a));
}
static object readNumber(PushbackTextReader r, char initch)
{
StringBuilder sb = new StringBuilder();
sb.Append(initch);
for (; ; )
{
int ch = r.Read();
if (ch == -1 || isWhitespace(ch) || isMacro(ch))
{
Unread(r, ch);
break;
}
sb.Append((char)ch);
}
string s = sb.ToString();
object n = matchNumber(s);
if (n == null)
throw new FormatException("Invalid number: " + s);
return n;
}
// There is really no reason for the main entry point to have an isRecursive flag, is there?
public static object read(PushbackTextReader r,
bool eofIsError,
object eofValue,
bool isRecursive)
{
try
{
for (; ; )
{
int ch = r.Read();
while (isWhitespace(ch))
ch = r.Read();
if (ch == -1)
{
if (eofIsError)
throw new EndOfStreamException("EOF while reading");
return eofValue;
}
if (Char.IsDigit((char)ch))
{
object n = readNumber(r, (char)ch);
return RT.suppressRead() ? null : n;
}
IFn macroFn = getMacro(ch);
if (macroFn != null)
{
object ret = macroFn.invoke(r, (char)ch);
if (RT.suppressRead())
return null;
// no op macros return the reader
if (ret == r)
continue;
return ret;
}
if (ch == '+' || ch == '-')
{
int ch2 = r.Read();
if (Char.IsDigit((char)ch2))
{
Unread(r, ch2);
object n = readNumber(r, (char)ch);
return RT.suppressRead() ? null : n;
}
Unread(r, ch2);
}
string token = readToken(r, (char)ch);
return RT.suppressRead() ? null : interpretToken(token);
}
}
catch (Exception e)
{
if (isRecursive || !(r is LineNumberingTextReader))
throw e;
LineNumberingTextReader rdr = r as LineNumberingTextReader;
throw new ReaderException(rdr.LineNumber, e);
}
}
protected override object Read(PushbackTextReader r, char doublequote)
{
StringBuilder sb = new StringBuilder();
for (int ch = r.Read(); ch != '"'; ch = r.Read())
{
if (ch == -1)
{
throw new EndOfStreamException("EOF while reading string");
}
if (ch == '\\') //escape
{
ch = r.Read();
if (ch == -1)
{
throw new EndOfStreamException("EOF while reading string");
}
switch (ch)
{
case 't':
ch = '\t';
break;
case 'r':
ch = '\r';
break;
case 'n':
ch = '\n';
break;
case '\\':
break;
case '"':
break;
case 'b':
ch = '\b';
break;
case 'f':
ch = '\f';
break;
case 'u':
ch = r.Read();
if (CharValueInRadix(ch, 16) == -1)
{
throw new Exception("Invalid unicode escape: \\u" + (char)ch);
}
ch = readUnicodeChar((PushbackTextReader)r, ch, 16, 4, true);
break;
default:
{
if (CharValueInRadix(ch, 8) != -1)
{
ch = readUnicodeChar((PushbackTextReader)r, ch, 8, 3, false);
if (ch > 255) //octal377
{
throw new Exception("Octal escape sequence must be in range [0, 377].");
}
}
else
{
throw new Exception("Unsupported escape character: \\" + (char)ch);
}
}
break;
}
}
sb.Append((char)ch);
}
return(sb.ToString());
}
static void readToken(PushbackTextReader r, char initch, out String rawToken, out String token, out String mask, out bool eofSeen)
{
bool allowSymEscape = RT.booleanCast(RT.AllowSymbolEscapeVar.deref());
bool rawMode = false;
StringBuilder sbRaw = new StringBuilder();
StringBuilder sbToken = new StringBuilder();
StringBuilder sbMask = new StringBuilder();
if (allowSymEscape && initch == '|')
{
rawMode = true;
sbRaw.Append(initch);
}
else
{
sbRaw.Append(initch);
sbToken.Append(initch);
sbMask.Append(initch);
}
for (; ; )
{
int ch = r.Read();
if (rawMode)
{
if (ch == -1)
{
rawToken = sbRaw.ToString();
token = sbToken.ToString();
mask = sbMask.ToString();
eofSeen = true;
return;
}
if (ch == '|')
{
int ch2 = r.Read();
if (ch2 == '|')
{
sbRaw.Append('|');
sbToken.Append('|');
sbMask.Append('a');
}
else
{
r.Unread(ch2);
rawMode = false;
sbRaw.Append(ch);
}
}
else
{
sbRaw.Append((char)ch);
sbToken.Append((char)ch);
sbMask.Append('a');
}
}
else
{
if (ch == -1 || isWhitespace(ch) || isTerminatingMacro(ch))
{
Unread(r, ch);
rawToken = sbRaw.ToString();
token = sbToken.ToString();
mask = sbMask.ToString();
eofSeen = false;
return;
}
else if (ch == '|' && allowSymEscape)
{
rawMode = true;
sbRaw.Append((char)ch);
}
else
{
sbRaw.Append((char)ch);
sbToken.Append((char)ch);
sbMask.Append((char)ch);
}
}
}
}
protected override object Read(PushbackTextReader r, char pct, object opts, object pendingForms)
{
//if (ARG_ENV.deref() == null)
// return interpretToken(readToken(r, '%'));
if (ARG_ENV.deref() == null)
{
return InterpretToken(readSimpleToken(r, '%'));
}
int ch = r.Read();
Unread(r, ch);
//% alone is first arg
if (ch == -1 || isWhitespace(ch) || isTerminatingMacro(ch))
{
return registerArg(1);
}
//object n = ReadAux(r, true, null, true, opts, pendingForms);
object n = ReadAux(r, opts, EnsurePending(pendingForms));
if (n.Equals(Compiler.AmpersandSym))
return registerArg(-1);
if (!Util.IsNumeric(n))
throw new ArgumentException("arg literal must be %, %& or %integer");
return registerArg(Util.ConvertToInt(n));
}
protected override object Read(PushbackTextReader r, char c)
{
object recordName = read(r, true, null, false);
Type recordType = RT.classForName(recordName.ToString());
int ch = r.Read();
char endch;
bool shortForm = true;
// A defrecord ctor can take two forms. Check for map->R version first.
if (ch == '{')
{
endch = '}';
shortForm = false;
}
else if (ch == '[')
endch = ']';
else
throw new Exception(String.Format("Unreadable constructor form starting with \"#{0}{1}\"", recordName, (char)ch));
object[] recordEntries = readDelimitedList(endch, r, true).ToArray();
object ret = null;
ConstructorInfo[] allCtors = recordType.GetConstructors();
if (shortForm)
{
bool ctorFound = false;
foreach ( ConstructorInfo cinfo in allCtors )
if ( cinfo.GetParameters().Length == recordEntries.Length )
ctorFound = true;
if ( ! ctorFound )
throw new Exception(String.Format("Unexpected number of constructor arguments to {0}: got {1}",recordType.ToString(),recordEntries.Length));
ret = Reflector.InvokeConstructor(recordType,RT.SeqToArray<Object>(ResolveEach(recordEntries)));
}
else
{
ret = Reflector.InvokeStaticMethod(recordType,"create",new Object[] { RT.map(RT.SeqToArray<object>(ResolveEach(recordEntries))) });
}
return ret;
}
protected override object Read(PushbackTextReader r, char pct)
{
//if (ARG_ENV.deref() == null)
// return interpretToken(readToken(r, '%'));
if (ARG_ENV.deref() == null)
{
string token;
int lastSlashIndex;
if (readToken(r, '%', out token, out lastSlashIndex))
throw new EndOfStreamException("EOF while reading %-token");
else
return InterpretToken(token, lastSlashIndex);
}
int ch = r.Read();
Unread(r, ch);
//% alone is first arg
if (ch == -1 || isWhitespace(ch) || isTerminatingMacro(ch))
{
return registerArg(1);
}
//object n = ReadAux(r, true, null, true);
object n = ReadAux(r);
if (n.Equals(Compiler.AmpersandSym))
return registerArg(-1);
if (!Util.IsNumeric(n))
throw new ArgumentException("arg literal must be %, %& or %integer");
return registerArg(Util.ConvertToInt(n));
}
protected override object Read(PushbackTextReader r, char hash, object opts)
{
int ch = r.Read();
if (ch == -1)
throw new EndOfStreamException("EOF while reading character");
IFn fn = _dispatchMacros[ch];
if (fn == null)
{
// try tagged reader
if (Char.IsLetter((char)ch))
{
Unread(r, ch);
return _taggedReader.invoke(r,(char)ch, opts);
}
throw new InvalidOperationException(String.Format("No dispatch macro for: {0}", (char)ch));
}
return fn.invoke(r, (char)ch, opts);
}
static string readSimpleToken(PushbackTextReader r, char initch, bool leadConstituent)
{
if (leadConstituent && NonConstituent(initch))
throw new InvalidOperationException("Invalid leading characters: " + (char)initch);
StringBuilder sb = new StringBuilder();
sb.Append(initch);
for (; ; )
{
int ch = r.Read();
if (ch == -1 || isWhitespace(ch) || isTerminatingMacro(ch))
{
Unread(r, ch);
return sb.ToString();
}
sb.Append((char)ch);
}
}
public static object read(PushbackTextReader r,
bool eofIsError,
object eofValue,
bool isRecursive,
Object opts)
{
try
{
for (; ; )
{
int ch = r.Read();
while (isWhitespace(ch))
ch = r.Read();
if (ch == -1)
{
if (eofIsError)
throw new EndOfStreamException("EOF while reading");
return eofValue;
}
if (Char.IsDigit((char)ch))
{
object n = readNumber(r, (char)ch);
return RT.suppressRead() ? null : n;
}
IFn macroFn = getMacro(ch);
if (macroFn != null)
{
object ret = macroFn.invoke(r, (char)ch, opts);
if (RT.suppressRead())
return null;
// no op macros return the reader
if (ret == r)
continue;
return ret;
}
if (ch == '+' || ch == '-')
{
int ch2 = r.Read();
if (Char.IsDigit((char)ch2))
{
Unread(r, ch2);
object n = readNumber(r, (char)ch);
return RT.suppressRead() ? null : n;
}
Unread(r, ch2);
}
//string token = readToken(r, (char)ch);
//return RT.suppressRead() ? null : interpretToken(token);
string token;
int lastSlashIndex;
bool eofSeen = readToken(r, (char)ch, true, out token, out lastSlashIndex);
if (eofSeen)
{
if (eofIsError)
throw new EndOfStreamException("EOF while reading");
return eofValue;
}
return RT.suppressRead() ? null : InterpretToken(token, lastSlashIndex);
}
}
catch (Exception e)
{
if (isRecursive)
throw;
LineNumberingTextReader lntr = r as LineNumberingTextReader;
if (lntr == null)
throw;
throw new ReaderException(lntr.LineNumber, lntr.ColumnNumber, e);
}
}
public static object read(PushbackTextReader r,
bool eofIsError,
object eofValue,
bool isRecursive,
Object opts)
{
try
{
for (; ;)
{
int ch = r.Read();
while (isWhitespace(ch))
{
ch = r.Read();
}
if (ch == -1)
{
if (eofIsError)
{
throw new EndOfStreamException("EOF while reading");
}
return(eofValue);
}
if (Char.IsDigit((char)ch))
{
object n = readNumber(r, (char)ch);
return(RT.suppressRead() ? null : n);
}
IFn macroFn = getMacro(ch);
if (macroFn != null)
{
object ret = macroFn.invoke(r, (char)ch, opts);
if (RT.suppressRead())
{
return(null);
}
// no op macros return the reader
if (ret == r)
{
continue;
}
return(ret);
}
if (ch == '+' || ch == '-')
{
int ch2 = r.Read();
if (Char.IsDigit((char)ch2))
{
Unread(r, ch2);
object n = readNumber(r, (char)ch);
return(RT.suppressRead() ? null : n);
}
Unread(r, ch2);
}
//string token = readToken(r, (char)ch);
//return RT.suppressRead() ? null : interpretToken(token);
readToken(r, (char)ch, true, out string rawToken, out string token, out string mask, out bool eofSeen);
if (eofSeen)
{
if (eofIsError)
{
throw new EndOfStreamException("EOF while reading symbol");
}
return(eofValue);
}
return(RT.suppressRead() ? null : InterpretToken(rawToken, token, mask));
}
}
catch (Exception e)
{
if (isRecursive)
{
throw;
}
if (r is LineNumberingTextReader lntr)
{
throw new ReaderException(lntr.LineNumber, lntr.ColumnNumber, e);
}
throw;
}
}
static List<Object> ReadDelimitedList(char delim, PushbackTextReader r, bool isRecursive)
{
LineNumberingTextReader lntr = r as LineNumberingTextReader;
int firstLine = lntr != null ? lntr.LineNumber : -1;
List<Object> a = new List<object>();
for (; ; )
{
int ch = r.Read();
while (isWhitespace(ch))
ch = r.Read();
if (ch == -1)
{
if (firstLine < 0)
throw new EndOfStreamException("EOF while reading");
else
throw new EndOfStreamException("EOF while reading, starting at line " + firstLine);
}
if (ch == delim)
{
break;
}
IFn macroFn = getMacro(ch);
if (macroFn != null)
{
Object mret = macroFn.invoke(r, (char)ch);
//no op macros return the reader
if (mret != r)
a.Add(mret);
}
else
{
Unread(r, ch);
object o = read(r, true, null, isRecursive);
if (o != r)
a.Add(o);
}
}
return a;
}
protected override object Read(PushbackTextReader r, char doublequote, object opts, object pendingForms)
{
StringBuilder sb = new StringBuilder();
for (int ch = r.Read(); ch != '"'; ch = r.Read())
{
if (ch == -1)
throw new EndOfStreamException("EOF while reading string");
if (ch == '\\') //escape
{
ch = r.Read();
if (ch == -1)
throw new EndOfStreamException("EOF while reading string");
switch (ch)
{
case 't':
ch = '\t';
break;
case 'r':
ch = '\r';
break;
case 'n':
ch = '\n';
break;
case '\\':
break;
case '"':
break;
case 'b':
ch = '\b';
break;
case 'f':
ch = '\f';
break;
case 'u':
ch = r.Read();
if (CharValueInRadix(ch, 16) == -1)
throw new InvalidOperationException("Invalid unicode escape: \\u" + (char)ch);
ch = readUnicodeChar((PushbackTextReader)r, ch, 16, 4, true);
break;
default:
{
//if (CharValueInRadix(ch, 8) != -1) -- this is correct, but we end up with different error message for 8,9 than JVM, so do the following to match:
if (Char.IsDigit((char)ch))
{
ch = readUnicodeChar((PushbackTextReader)r, ch, 8, 3, false);
if (ch > 255) //octal377
throw new InvalidOperationException("Octal escape sequence must be in range [0, 377].");
}
else
throw new InvalidOperationException("Unsupported escape character: \\" + (char)ch);
}
break;
}
}
sb.Append((char)ch);
}
return sb.ToString();
}
static object ReadRecord(PushbackTextReader r, Symbol recordName)
{
Type recordType = RT.classForName(recordName.ToString());
char endch;
bool shortForm = true;
int ch = r.Read();
// flush whitespace
//while (isWhitespace(ch))
// ch = r.Read();
// A defrecord ctor can take two forms. Check for map->R version first.
if (ch == '{')
{
endch = '}';
shortForm = false;
}
else if (ch == '[')
endch = ']';
else
throw new ArgumentException(String.Format("Unreadable constructor form starting with \"#{0}{1}\"", recordName, (char)ch));
object[] recordEntries = ReadDelimitedList(endch, r, true).ToArray();
object ret = null;
ConstructorInfo[] allCtors = recordType.GetConstructors();
if (shortForm)
{
bool ctorFound = false;
foreach ( ConstructorInfo cinfo in allCtors )
if ( cinfo.GetParameters().Length == recordEntries.Length )
ctorFound = true;
if ( ! ctorFound )
throw new ArgumentException(String.Format("Unexpected number of constructor arguments to {0}: got {1}", recordType.ToString(), recordEntries.Length));
ret = Reflector.InvokeConstructor(recordType,recordEntries);
}
else
{
IPersistentMap vals = RT.map(recordEntries);
for (ISeq s = RT.keys(vals); s != null; s = s.next())
{
if (!(s.first() is Keyword))
throw new ArgumentException(String.Format("Unreadable defrecord form: key must be of type clojure.lang.Keyword, got {0}", s.first().ToString()));
}
ret = Reflector.InvokeStaticMethod(recordType, "create", new Object[] { vals });
}
return ret;
}
private static Object read(PushbackTextReader r, bool eofIsError, object eofValue, char? returnOn, object returnOnValue, bool isRecursive, object opts, object pendingForms)
{
if (UNKNOWN.Equals(RT.ReadEvalVar.deref()))
throw new InvalidOperationException("Reading disallowed - *read-eval* bound to :unknown");
opts = InstallPlatformFeature(opts);
try
{
for (; ; )
{
var pfl = pendingForms as LinkedList<Object>;
if (pfl != null && pfl.Count != 0)
{
object val = pfl.First.Value;
pfl.RemoveFirst();
return val;
}
int ch = r.Read();
while (isWhitespace(ch))
ch = r.Read();
if (ch == -1)
{
if (eofIsError)
throw new EndOfStreamException("EOF while reading");
return eofValue;
}
if (returnOn.HasValue && (returnOn.Value == ch))
{
return returnOnValue;
}
if (Char.IsDigit((char)ch))
{
object n = readNumber(r, (char)ch);
return n;
}
IFn macroFn = getMacro(ch);
if (macroFn != null)
{
object ret = macroFn.invoke(r, (char)ch, opts, pendingForms);
// no op macros return the reader
if (ret == r)
continue;
return ret;
}
if (ch == '+' || ch == '-')
{
int ch2 = r.Read();
if (Char.IsDigit((char)ch2))
{
Unread(r, ch2);
object n = readNumber(r, (char)ch);
return n;
}
Unread(r, ch2);
}
//string token = readToken(r, (char)ch);
//return RT.suppressRead() ? null : interpretToken(token);
string rawToken;
string token;
string mask;
bool eofSeen;
readToken(r, (char)ch, out rawToken, out token, out mask, out eofSeen);
if (eofSeen)
{
if (eofIsError)
throw new EndOfStreamException("EOF while reading symbol");
return eofValue;
}
return InterpretToken(rawToken, token, mask);
}
}
catch (Exception e)
{
if (isRecursive)
throw;
LineNumberingTextReader lntr = r as LineNumberingTextReader;
if (lntr == null)
throw;
throw new ReaderException(lntr.LineNumber, lntr.ColumnNumber, e);
}
}
protected override object Read(PushbackTextReader r, char pct)
{
if (ARG_ENV.deref() == null)
return interpretToken(readToken(r, '%'));
int ch = r.Read();
Unread(r, ch);
//% alone is first arg
if (ch == -1 || isWhitespace(ch) || isTerminatingMacro(ch))
{
return registerArg(1);
}
//object n = ReadAux(r, true, null, true);
object n = ReadAux(r);
if (n.Equals(Compiler._AMP_))
return registerArg(-1);
if (!Util.IsNumeric(n))
throw new ArgumentException("arg literal must be %, %& or %integer");
return registerArg(Util.ConvertToInt(n));
}
protected override object Read(PushbackTextReader r, char c, object opts, object pendingForms)
{
checkConditionalAllowed(opts);
int ch = r.Read();
if (ch == -1)
throw new EndOfStreamException("EOF while reading character");
bool splicing = false;
if (ch == '@')
{
splicing = true;
ch = r.Read();
}
while (isWhitespace(ch))
ch = r.Read();
if (ch == -1)
throw new EndOfStreamException("EOF while reading character");
if (ch != '(')
throw new InvalidOperationException("read-cond body must be a list");
try
{
Var.pushThreadBindings(RT.map(READ_COND_ENV, true /* RT.T */));
if (IsPreserveReadCond(opts))
{
IFn listReader = getMacro(ch); // should always be a list
Object form = listReader.invoke(r, (char)ch, opts, EnsurePending(pendingForms));
return ReaderConditional.create(form, splicing);
}
else
{
return readCondDelimited(r, splicing, opts, pendingForms);
}
}
finally
{
Var.popThreadBindings();
}
}
// There is really no reason for the main entry point to have an isRecursive flag, is there?
public static object read(PushbackTextReader r,
bool eofIsError,
object eofValue,
bool isRecursive)
{
try
{
for (; ;)
{
int ch = r.Read();
while (isWhitespace(ch))
{
ch = r.Read();
}
if (ch == -1)
{
if (eofIsError)
{
throw new EndOfStreamException("EOF while reading");
}
return(eofValue);
}
if (Char.IsDigit((char)ch))
{
object n = readNumber(r, (char)ch);
return(RT.suppressRead() ? null : n);
}
IFn macroFn = getMacro(ch);
if (macroFn != null)
{
object ret = macroFn.invoke(r, (char)ch);
if (RT.suppressRead())
{
return(null);
}
// no op macros return the reader
if (ret == r)
{
continue;
}
return(ret);
}
if (ch == '+' || ch == '-')
{
int ch2 = r.Read();
if (Char.IsDigit((char)ch2))
{
Unread(r, ch2);
object n = readNumber(r, (char)ch);
return(RT.suppressRead() ? null : n);
}
Unread(r, ch2);
}
string token = readToken(r, (char)ch);
return(RT.suppressRead() ? null : interpretToken(token));
}
}
catch (Exception e)
{
if (isRecursive || !(r is LineNumberingTextReader))
{
throw e;
}
LineNumberingTextReader rdr = r as LineNumberingTextReader;
throw new ReaderException(rdr.LineNumber, e);
}
}
static bool readToken(PushbackTextReader r, char initch, out string nameString, out int lastSlashIndex)
{
bool oddVertBarMode = false;
lastSlashIndex = -1;
bool allowSymEscape = RT.booleanCast(RT.AllowSymbolEscapeVar.deref());
StringBuilder sb = new StringBuilder();
if (allowSymEscape && initch == '|')
oddVertBarMode = true;
else
sb.Append(initch);
for (; ; )
{
int ch = r.Read();
if (oddVertBarMode)
{
if (ch == -1)
{
nameString = sb.ToString();
return true;
}
if (ch == '|')
{
int ch2 = r.Read();
if (ch2 == '|')
sb.Append('|');
else
{
r.Unread(ch2);
oddVertBarMode = false;
}
}
else
sb.Append((char)ch);
}
else
{
if (ch == -1 || isWhitespace(ch) || isTerminatingMacro(ch))
{
Unread(r, ch);
nameString = sb.ToString();
return false;
}
else if (ch == '|' && allowSymEscape)
{
oddVertBarMode = true;
}
else
{
sb.Append((char)ch);
if (ch == '/')
lastSlashIndex = sb.Length - 1;
}
}
}
}
static void readToken(PushbackTextReader r, char initch, bool leadConstituent, out String rawToken, out String token, out String mask, out bool eofSeen)
{
if (leadConstituent && NonConstituent(initch))
{
throw new InvalidOperationException("Invalid leading characters: " + (char)initch);
}
bool allowSymEscape = RT.booleanCast(RT.AllowSymbolEscapeVar.deref());
bool rawMode = false;
StringBuilder sbRaw = new StringBuilder();
StringBuilder sbToken = new StringBuilder();
StringBuilder sbMask = new StringBuilder();
if (allowSymEscape && initch == '|')
{
rawMode = true;
sbRaw.Append(initch);
}
else
{
sbRaw.Append(initch);
sbToken.Append(initch);
sbMask.Append(initch);
}
for (; ;)
{
int ch = r.Read();
if (rawMode)
{
if (ch == -1)
{
rawToken = sbRaw.ToString();
token = sbToken.ToString();
mask = sbMask.ToString();
eofSeen = true;
return;
}
if (ch == '|')
{
int ch2 = r.Read();
if (ch2 == '|')
{
sbRaw.Append('|');
sbToken.Append('|');
sbMask.Append('a');
}
else
{
r.Unread(ch2);
rawMode = false;
sbRaw.Append(ch);
}
}
else
{
sbRaw.Append((char)ch);
sbToken.Append((char)ch);
sbMask.Append('a');
}
}
else
{
if (ch == -1 || isWhitespace(ch) || isTerminatingMacro(ch))
{
Unread(r, ch);
rawToken = sbRaw.ToString();
token = sbToken.ToString();
mask = sbMask.ToString();
eofSeen = false;
return;
}
else if (NonConstituent(ch))
{
throw new InvalidOperationException("Invalid constituent character: " + (char)ch);
}
else if (ch == '|' && allowSymEscape)
{
rawMode = true;
sbRaw.Append((char)ch);
}
else
{
sbRaw.Append((char)ch);
sbToken.Append((char)ch);
sbMask.Append((char)ch);
}
}
}
}
protected override object Read(PushbackTextReader r, char hash)
{
int ch = r.Read();
if (ch == -1)
throw new EndOfStreamException("EOF while reading character");
IFn fn = _dispatchMacros[ch];
// Try the ctor reader first
if (fn == null)
{
Unread(r, ch);
object result = _ctorReader.invoke(r,(char) ch);
if (result != null)
return result;
else
throw new InvalidOperationException(String.Format("No dispatch macro for: {0}", (char)ch));
}
return fn.invoke(r, (char)ch);
}
static int readUnicodeChar(PushbackTextReader r, int initch, int radix, int length, bool exact)
{
int uc = CharValueInRadix(initch, radix);
if (uc == -1)
throw new ArgumentException("Invalid digit: " + initch);
int i = 1;
for (; i < length; ++i)
{
int ch = r.Read();
if (ch == -1 || isWhitespace(ch) || isMacro(ch))
{
Unread(r, ch);
break;
}
int d = CharValueInRadix(ch, radix);
if (d == -1)
throw new ArgumentException("Invalid digit: " + (char)ch);
uc = uc * radix + d;
}
if (i != length && exact)
throw new ArgumentException("Invalid character length: " + i + ", should be: " + length);
return uc;
}
protected override object Read(PushbackTextReader r, char comma)
{
int ch = r.Read();
if (ch == -1)
throw new EndOfStreamException("EOF while reading character");
if (ch == '@')
{
//object o = read(r, true, null, true);
object o = ReadAux(r);
return RT.list(UNQUOTE_SPLICING, o);
}
else
{
Unread(r, ch);
//object o = read(r, true, null, true);
object o = ReadAux(r);
//return new Unquote(o);
// per Rev 1184
return RT.list(UNQUOTE, o);
}
}
protected override object Read(PushbackTextReader r, char semicolon)
{
int ch;
do
{
ch = r.Read();
} while (ch != -1 && ch != '\n' && ch != '\r');
return r;
}
public static List<Object> readDelimitedList(char delim, PushbackTextReader r, bool isRecursive)
{
List<Object> a = new List<object>();
for (; ; )
{
int ch = r.Read();
while (isWhitespace(ch))
ch = r.Read();
if (ch == -1)
throw new EndOfStreamException("EOF while reading");
if (ch == delim)
{
break;
}
IFn macroFn = getMacro(ch);
if (macroFn != null)
{
Object mret = macroFn.invoke(r, (char)ch);
//no op macros return the reader
if (mret != r)
a.Add(mret);
}
else
{
Unread(r, ch);
object o = read(r, true, null, isRecursive);
if (o != r)
a.Add(o);
}
}
return a;
}
protected override object Read(PushbackTextReader r, char doublequote)
{
StringBuilder sb = new StringBuilder();
for (int ch = r.Read(); ch != '"'; ch = r.Read())
{
if (ch == -1)
throw new EndOfStreamException("EOF while reading regex");
sb.Append((char)ch);
if (ch == '\\') //escape
{
ch = r.Read();
if (ch == -1)
throw new EndOfStreamException("EOF while reading regex");
sb.Append((char)ch);
}
}
return new Regex(sb.ToString());
}
static string readToken(PushbackTextReader r, char initch)
{
StringBuilder sb = new StringBuilder();
sb.Append(initch);
for(; ;)
{
int ch = r.Read();
if(ch == -1 || isWhitespace(ch) || isTerminatingMacro(ch))
{
Unread(r, ch);
return sb.ToString();
}
sb.Append((char) ch);
}
}
static bool readToken(PushbackTextReader r, char initch, bool leadConstituent, out string nameString, out int lastSlashIndex)
{
if (leadConstituent && NonConstituent(initch))
{
throw new InvalidOperationException("Invalid leading characters: " + (char)initch);
}
bool oddVertBarMode = false;
lastSlashIndex = -1;
bool allowSymEscape = RT.booleanCast(RT.AllowSymbolEscapeVar.deref());
StringBuilder sb = new StringBuilder();
if (allowSymEscape && initch == '|')
{
oddVertBarMode = true;
}
else
{
sb.Append(initch);
}
for (; ;)
{
int ch = r.Read();
if (oddVertBarMode)
{
if (ch == -1)
{
nameString = sb.ToString();
return(true);
}
if (ch == '|')
{
int ch2 = r.Read();
if (ch2 == '|')
{
sb.Append('|');
}
else
{
r.Unread(ch2);
oddVertBarMode = false;
}
}
else
{
sb.Append((char)ch);
}
}
else
{
if (ch == -1 || isWhitespace(ch) || isTerminatingMacro(ch))
{
Unread(r, ch);
nameString = sb.ToString();
return(false);
}
else if (NonConstituent(ch))
{
throw new InvalidOperationException("Invalid constituent character: " + (char)ch);
}
else if (ch == '|' && allowSymEscape)
{
oddVertBarMode = true;
}
else
{
sb.Append((char)ch);
if (ch == '/')
{
lastSlashIndex = sb.Length - 1;
}
}
}
}
}
protected override object Read(PushbackTextReader r, char backslash)
{
int ch = r.Read();
if (ch == -1)
throw new EndOfStreamException("EOF while reading character");
String token = readToken(r, (char)ch);
if (token.Length == 1)
return token[0];
else if (token.Equals("newline"))
return '\n';
else if (token.Equals("space"))
return ' ';
else if (token.Equals("tab"))
return '\t';
else if (token.Equals("backspace"))
return '\b';
else if (token.Equals("formfeed"))
return '\f';
else if (token.Equals("return"))
return '\r';
else if (token.StartsWith("u"))
{
char c = (char)readUnicodeChar(token, 1, 4, 16);
if (c >= '\uD800' && c <= '\uDFFF') // surrogate code unit?
throw new Exception("Invalid character constant: \\u" + ((int)c).ToString("X"));
return c;
}
else if (token.StartsWith("o"))
{
int len = token.Length - 1;
if (len > 3)
throw new Exception("Invalid octal escape sequence length: " + len);
int uc = readUnicodeChar(token, 1, len, 8);
if (uc > 255) //octal377
throw new Exception("Octal escape sequence must be in range [0, 377].");
return (char)uc;
}
throw new Exception("Unsupported character: \\" + token);
}
protected override object Read(PushbackTextReader r, char backslash, object opts)
{
int ch = r.Read();
if (ch == -1)
{
throw new EndOfStreamException("EOF while reading character");
}
String token = readSimpleToken(r, (char)ch, false);
if (token.Length == 1)
{
return(token[0]);
}
else if (token.Equals("newline"))
{
return('\n');
}
else if (token.Equals("space"))
{
return(' ');
}
else if (token.Equals("tab"))
{
return('\t');
}
else if (token.Equals("backspace"))
{
return('\b');
}
else if (token.Equals("formfeed"))
{
return('\f');
}
else if (token.Equals("return"))
{
return('\r');
}
else if (token.StartsWith("u"))
{
char c = (char)readUnicodeChar(token, 1, 4, 16);
if (c >= '\uD800' && c <= '\uDFFF') // surrogate code unit?
{
throw new InvalidOperationException("Invalid character constant: \\u" + ((int)c).ToString("x"));
}
return(c);
}
else if (token.StartsWith("o"))
{
int len = token.Length - 1;
if (len > 3)
{
throw new InvalidOperationException("Invalid octal escape sequence length: " + len);
}
int uc = readUnicodeChar(token, 1, len, 8);
if (uc > 255) //octal377
{
throw new InvalidOperationException("Octal escape sequence must be in range [0, 377].");
}
return((char)uc);
}
throw new InvalidOperationException("Unsupported character: \\" + token);
}
protected override object Read(PushbackTextReader r, char hash)
{
int ch = r.Read();
if (ch == -1)
throw new EndOfStreamException("EOF while reading character");
IFn fn = _dispatchMacros[ch];
if (fn == null)
throw new Exception(String.Format("No dispatch macro for: {0}", (char)ch));
return fn.invoke(r, (char)ch);
}
protected override object Read(PushbackTextReader r, char doublequote, object opts)
{
StringBuilder sb = new StringBuilder();
for (int ch = r.Read(); ch != '"'; ch = r.Read())
{
if (ch == -1)
{
throw new EndOfStreamException("EOF while reading string");
}
if (ch == '\\') //escape
{
ch = r.Read();
if (ch == -1)
{
throw new EndOfStreamException("EOF while reading string");
}
switch (ch)
{
case 't':
ch = '\t';
break;
case 'r':
ch = '\r';
break;
case 'n':
ch = '\n';
break;
case '\\':
break;
case '"':
break;
case 'b':
ch = '\b';
break;
case 'f':
ch = '\f';
break;
case 'u':
ch = r.Read();
if (CharValueInRadix(ch, 16) == -1)
{
throw new InvalidOperationException("Invalid unicode escape: \\u" + (char)ch);
}
ch = readUnicodeChar((PushbackTextReader)r, ch, 16, 4, true);
break;
default:
{
//if (CharValueInRadix(ch, 8) != -1) -- this is correct, but we end up with different error message for 8,9 than JVM, so do the following to match:
if (Char.IsDigit((char)ch))
{
ch = readUnicodeChar((PushbackTextReader)r, ch, 8, 3, false);
if (ch > 255) //octal377
{
throw new InvalidOperationException("Octal escape sequence must be in range [0, 377].");
}
}
else
{
throw new InvalidOperationException("Unsupported escape character: \\" + (char)ch);
}
}
break;
}
}
sb.Append((char)ch);
}
return(sb.ToString());
}
protected override object Read(PushbackTextReader r, char doublequote)
{
StringBuilder sb = new StringBuilder();
for (int ch = r.Read(); ch != '"'; ch = r.Read())
{
if (ch == -1)
throw new EndOfStreamException("EOF while reading string");
if (ch == '\\') //escape
{
ch = r.Read();
if (ch == -1)
throw new EndOfStreamException("EOF while reading string");
switch (ch)
{
case 't':
ch = '\t';
break;
case 'r':
ch = '\r';
break;
case 'n':
ch = '\n';
break;
case '\\':
break;
case '"':
break;
case 'b':
ch = '\b';
break;
case 'f':
ch = '\f';
break;
case 'u':
ch = r.Read();
if (CharValueInRadix(ch, 16) == -1)
throw new Exception("Invalid unicode escape: \\u" + (char)ch);
ch = readUnicodeChar((PushbackTextReader)r, ch, 16, 4, true);
break;
default:
{
if (CharValueInRadix(ch, 8) != -1)
{
ch = readUnicodeChar((PushbackTextReader)r, ch, 8, 3, false);
if (ch > 255) //octal377
throw new Exception("Octal escape sequence must be in range [0, 377].");
}
else
throw new Exception("Unsupported escape character: \\" + (char)ch);
}
break;
}
}
sb.Append((char)ch);
}
return sb.ToString();
}
public static object read(PushbackTextReader r,
bool eofIsError,
object eofValue,
bool isRecursive)
{
if (UNKNOWN.Equals(RT.ReadEvalVar.deref()))
throw new InvalidOperationException("Reading disallowed - *read-eval* bound to :unknown");
try
{
for (; ; )
{
int ch = r.Read();
while (isWhitespace(ch))
ch = r.Read();
if (ch == -1)
{
if (eofIsError)
throw new EndOfStreamException("EOF while reading");
return eofValue;
}
if (Char.IsDigit((char)ch))
{
object n = readNumber(r, (char)ch);
return RT.suppressRead() ? null : n;
}
IFn macroFn = getMacro(ch);
if (macroFn != null)
{
object ret = macroFn.invoke(r, (char)ch);
if (RT.suppressRead())
return null;
// no op macros return the reader
if (ret == r)
continue;
return ret;
}
if (ch == '+' || ch == '-')
{
int ch2 = r.Read();
if (Char.IsDigit((char)ch2))
{
Unread(r, ch2);
object n = readNumber(r, (char)ch);
return RT.suppressRead() ? null : n;
}
Unread(r, ch2);
}
//string token = readToken(r, (char)ch);
//return RT.suppressRead() ? null : interpretToken(token);
string rawToken;
string token;
string mask;
bool eofSeen;
readToken(r, (char)ch, out rawToken, out token, out mask, out eofSeen);
if (eofSeen)
{
if (eofIsError)
throw new EndOfStreamException("EOF while reading symbol");
return eofValue;
}
return RT.suppressRead() ? null : InterpretToken(rawToken, token, mask);
}
}
catch (Exception e)
{
if (isRecursive)
throw;
LineNumberingTextReader lntr = r as LineNumberingTextReader;
if (lntr == null)
throw;
throw new ReaderException(lntr.LineNumber, lntr.ColumnNumber, e);
}
}
