//\r
// cs-tokenizer.cs: The Tokenizer for the C# compiler\r
+// This also implements the preprocessor\r
//\r
// Author: Miguel de Icaza (miguel@gnu.org)\r
//\r
// Licensed under the terms of the GNU GPL\r
//\r
-// (C) 2001 Ximian, Inc (http://www.ximian.com)\r
+// (C) 2001, 2002 Ximian, Inc (http://www.ximian.com)\r
//\r
\r
/*\r
- Todo:\r
-\r
- Do something with the integer and float suffixes, pass full datatype?\r
- Make sure we accept the proper Unicode ranges, per the spec.\r
-\r
- * Error reporting.\r
-\r
- I was returning Token.ERROR on errors and setting an\r
- internal error string with the details, but it might make sense\r
- to just use exceptions.\r
-\r
- Change of mind: I think I want to keep returning errors *UNLESS* the\r
- parser is catching errors from the tokenizer (at that point, there is\r
- not really any reason to use exceptions) so that I can continue the\r
- parsing \r
-\r
- * IDEA\r
-\r
- I think I have solved the problem. The idea is to not even *bother*\r
- about handling data types a lot here (except for fitting data into\r
- the proper places), but let the upper layer handle it.\r
-\r
- Ie, treat LITERAL_CHARACTER, LITERAL_INTEGER, LITERAL_FLOAT, LITERAL_DOUBLE, and\r
- return then as `LITERAL_LITERAL' with maybe subdetail information\r
-\r
+ * TODO:\r
+ * Make sure we accept the proper Unicode ranges, per the spec.\r
+ * Report error 1032\r
*/\r
\r
using System;\r
using System.Collections;\r
using System.IO;\r
using System.Globalization;\r
+using System.Reflection;\r
\r
-namespace CIR\r
+namespace Mono.CSharp\r
{\r
/// <summary>\r
/// Tokenizer for C# source code. \r
public class Tokenizer : yyParser.yyInput\r
{\r
StreamReader reader;\r
- public string ref_name;\r
+ public SourceFile ref_name;\r
+ public SourceFile file_name;\r
public int ref_line = 1;\r
public int line = 1;\r
public int col = 1;\r
public int current_token;\r
bool handle_get_set = false;\r
+ bool handle_remove_add = false;\r
+ bool handle_assembly = false;\r
\r
+ //\r
+ // Whether tokens have been seen on this line\r
+ //\r
+ bool tokens_seen = false;\r
+\r
+ //\r
+ // Whether a token has been seen on the file\r
+ // This is needed because `define' is not allowed to be used\r
+ // after a token has been seen.\r
+ //\r
+ bool any_token_seen = false;\r
+ static Hashtable tokenValues;\r
+ \r
+ private static Hashtable TokenValueName\r
+ {\r
+ get {\r
+ if (tokenValues == null)\r
+ tokenValues = GetTokenValueNameHash ();\r
+\r
+ return tokenValues;\r
+ }\r
+ }\r
+\r
+ private static Hashtable GetTokenValueNameHash ()\r
+ {\r
+ Type t = typeof (Token);\r
+ FieldInfo [] fields = t.GetFields ();\r
+ Hashtable hash = new Hashtable ();\r
+ foreach (FieldInfo field in fields) {\r
+ if (field.IsLiteral && field.IsStatic && field.FieldType == typeof (int))\r
+ hash.Add (field.GetValue (null), field.Name);\r
+ }\r
+ return hash;\r
+ }\r
+ \r
//\r
// Returns a verbose representation of the current location\r
//\r
// return "Line: "+line+" Col: "+col + "\n" +\r
// "VirtLine: "+ref_line +\r
// " Token: "+current_token + " " + det;\r
-\r
- return ref_name + " " + "(" + line + "," + col + "), Token:" + current_token + " " + det;\r
+ string current_token_name = TokenValueName [current_token] as string;\r
+ if (current_token_name == null)\r
+ current_token_name = current_token.ToString ();\r
+\r
+ return String.Format ("{0} ({1},{2}), Token: {3} {4}", ref_name.Name,\r
+ ref_line,\r
+ col,\r
+ current_token_name,\r
+ det);\r
}\r
}\r
\r
- public bool properties {\r
+ public bool PropertyParsing {\r
get {\r
return handle_get_set;\r
}\r
handle_get_set = value;\r
}\r
}\r
+\r
+ public bool AssemblyTargetParsing {\r
+ get {\r
+ return handle_assembly;\r
+ }\r
+\r
+ set {\r
+ handle_assembly = value;\r
+ }\r
+ }\r
+\r
+ public bool EventParsing {\r
+ get {\r
+ return handle_remove_add;\r
+ }\r
+\r
+ set {\r
+ handle_remove_add = value;\r
+ }\r
+ }\r
\r
//\r
// Class variables\r
//\r
// Values for the associated token returned\r
//\r
- System.Text.StringBuilder number;\r
int putback_char;\r
Object val;\r
+\r
+ //\r
+ // Pre-processor\r
+ //\r
+ Hashtable defines;\r
+\r
+ const int TAKING = 1;\r
+ const int TAKEN_BEFORE = 2;\r
+ const int ELSE_SEEN = 4;\r
+ const int PARENT_TAKING = 8;\r
+ const int REGION = 16; \r
+\r
+ //\r
+ // pre-processor if stack state:\r
+ //\r
+ Stack ifstack;\r
+\r
+ static System.Text.StringBuilder string_builder;\r
+\r
+ const int max_id_size = 512;\r
+ static char [] id_builder = new char [max_id_size];\r
+\r
+ const int max_number_size = 128;\r
+ static char [] number_builder = new char [max_number_size];\r
+ static int number_pos;\r
\r
//\r
// Details about the error encoutered by the tokenizer\r
\r
public int Line {\r
get {\r
- return line;\r
+ return ref_line;\r
}\r
}\r
\r
return col;\r
}\r
}\r
- \r
- static void initTokens ()\r
+\r
+ static void InitTokens ()\r
{\r
keywords = new Hashtable ();\r
\r
keywords.Add ("abstract", Token.ABSTRACT);\r
keywords.Add ("as", Token.AS);\r
keywords.Add ("add", Token.ADD);\r
+ keywords.Add ("assembly", Token.ASSEMBLY);\r
keywords.Add ("base", Token.BASE);\r
keywords.Add ("bool", Token.BOOL);\r
keywords.Add ("break", Token.BREAK);\r
keywords.Add ("set", Token.SET);\r
keywords.Add ("short", Token.SHORT);\r
keywords.Add ("sizeof", Token.SIZEOF);\r
+ keywords.Add ("stackalloc", Token.STACKALLOC);\r
keywords.Add ("static", Token.STATIC);\r
keywords.Add ("string", Token.STRING);\r
keywords.Add ("struct", Token.STRUCT);\r
keywords.Add ("using", Token.USING);\r
keywords.Add ("virtual", Token.VIRTUAL);\r
keywords.Add ("void", Token.VOID);\r
+ keywords.Add ("volatile", Token.VOLATILE);\r
keywords.Add ("while", Token.WHILE);\r
+\r
+ if (RootContext.V2){\r
+ keywords.Add ("__yield", Token.YIELD);\r
+ keywords.Add ("yield", Token.YIELD);\r
+ }\r
}\r
\r
//\r
// \r
static Tokenizer ()\r
{\r
- initTokens ();\r
- csharp_format_info = new NumberFormatInfo ();\r
- csharp_format_info.CurrencyDecimalSeparator = ".";\r
- styles = NumberStyles.AllowExponent | NumberStyles.AllowDecimalPoint;\r
+ InitTokens ();\r
+ csharp_format_info = NumberFormatInfo.InvariantInfo;\r
+ styles = NumberStyles.Float;\r
+ \r
+ string_builder = new System.Text.StringBuilder ();\r
}\r
\r
- bool is_keyword (string name)\r
+ int GetKeyword (string name)\r
{\r
- bool res;\r
+ object o = keywords [name];\r
+\r
+ if (o == null)\r
+ return -1;\r
\r
- res = keywords.Contains (name);\r
- if ((name == "get" || name == "set") && handle_get_set == false)\r
- return false;\r
- return res;\r
- }\r
+ int res = (int) o;\r
\r
- int getKeyword (string name)\r
- {\r
- return (int) (keywords [name]);\r
+ if (handle_get_set == false && (res == Token.GET || res == Token.SET))\r
+ return -1;\r
+ if (handle_remove_add == false && (res == Token.REMOVE || res == Token.ADD))\r
+ return -1;\r
+ if (handle_assembly == false && res == Token.ASSEMBLY)\r
+ return -1;\r
+ return res;\r
+ \r
}\r
\r
public Location Location {\r
return new Location (ref_line);\r
}\r
}\r
+\r
+ void define (string def)\r
+ {\r
+ if (!RootContext.AllDefines.Contains (def)){\r
+ RootContext.AllDefines [def] = true;\r
+ }\r
+ if (defines.Contains (def))\r
+ return;\r
+ defines [def] = true;\r
+ }\r
\r
- public Tokenizer (System.IO.Stream input, string fname)\r
+ public Tokenizer (StreamReader input, SourceFile file, ArrayList defs)\r
{\r
- this.ref_name = fname;\r
- reader = new System.IO.StreamReader (input);\r
+ this.ref_name = file;\r
+ this.file_name = file;\r
+ reader = input;\r
+ \r
putback_char = -1;\r
\r
- Location.Push (fname);\r
+ if (defs != null){\r
+ defines = new Hashtable ();\r
+ foreach (string def in defs)\r
+ define (def);\r
+ }\r
+\r
+ //\r
+ // FIXME: This could be `Location.Push' but we have to\r
+ // find out why the MS compiler allows this\r
+ //\r
+ Mono.CSharp.Location.Push (file);\r
}\r
\r
bool is_identifier_start_character (char c)\r
{\r
- return Char.IsLetter (c) || c == '_' ;\r
+ return (c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z') || c == '_' || Char.IsLetter (c);\r
}\r
\r
bool is_identifier_part_character (char c)\r
{\r
- return (Char.IsLetter (c) || Char.IsDigit (c) || c == '_');\r
+ return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || c == '_' || (c >= '0' && c <= '9') || Char.IsLetter (c);\r
}\r
\r
int is_punct (char c, ref bool doread)\r
{\r
- int idx = "{}[](),:;~+-*/%&|^!=<>?".IndexOf (c);\r
int d;\r
int t;\r
\r
else if (d == '=')\r
t = Token.OP_SUB_ASSIGN;\r
else if (d == '>')\r
- return Token.OP_PTR;\r
+ t = Token.OP_PTR;\r
else\r
return Token.MINUS;\r
doread = true;\r
return Token.ERROR;\r
}\r
\r
+ void Error_NumericConstantTooLong ()\r
+ {\r
+ Report.Error (1021, Location, "Numeric constant too long"); \r
+ }\r
+ \r
bool decimal_digits (int c)\r
{\r
int d;\r
bool seen_digits = false;\r
\r
- if (c != -1)\r
- number.Append ((char) c);\r
+ if (c != -1){\r
+ if (number_pos == max_number_size)\r
+ Error_NumericConstantTooLong ();\r
+ number_builder [number_pos++] = (char) c;\r
+ }\r
\r
- while ((d = peekChar ()) != -1){\r
- if (Char.IsDigit ((char)d)){\r
- number.Append ((char) d);\r
+ //\r
+ // We use peekChar2, because decimal_digits needs to do a \r
+ // 2-character look-ahead (5.ToString for example).\r
+ //\r
+ while ((d = peekChar2 ()) != -1){\r
+ if (d >= '0' && d <= '9'){\r
+ if (number_pos == max_number_size)\r
+ Error_NumericConstantTooLong ();\r
+ number_builder [number_pos++] = (char) d;\r
getChar ();\r
seen_digits = true;\r
} else\r
break;\r
}\r
+ \r
return seen_digits;\r
}\r
\r
+ bool is_hex (int e)\r
+ {\r
+ return (e >= '0' && e <= '9') || (e >= 'A' && e <= 'F') || (e >= 'a' && e <= 'f');\r
+ }\r
+ \r
void hex_digits (int c)\r
{\r
- int d;\r
-\r
if (c != -1)\r
- number.Append ((char) c);\r
- while ((d = peekChar ()) != -1){\r
- char e = Char.ToUpper ((char) d);\r
- \r
- if (Char.IsDigit (e) ||\r
- (e >= 'A' && e <= 'F')){\r
- number.Append ((char) e);\r
- getChar ();\r
- } else\r
- break;\r
- }\r
+ number_builder [number_pos++] = (char) c;\r
+ \r
}\r
\r
int real_type_suffix (int c)\r
{\r
int t;\r
- \r
+\r
switch (c){\r
case 'F': case 'f':\r
t = Token.LITERAL_FLOAT;\r
default:\r
return Token.NONE;\r
}\r
- //getChar ();\r
return t;\r
}\r
\r
- int integer_type_suffix (int c)\r
+ int integer_type_suffix (ulong ul, int c)\r
{\r
- // FIXME: Handle U and L suffixes.\r
- // We also need to see in which kind of\r
- // Int the thing fits better according to the spec.\r
+ bool is_unsigned = false;\r
+ bool is_long = false;\r
+\r
+ if (c != -1){\r
+ bool scanning = true;\r
+ do {\r
+ switch (c){\r
+ case 'U': case 'u':\r
+ if (is_unsigned)\r
+ scanning = false;\r
+ is_unsigned = true;\r
+ getChar ();\r
+ break;\r
+\r
+ case 'l':\r
+ if (!is_unsigned){\r
+ //\r
+ // if we have not seen anything in between\r
+ // report this error\r
+ //\r
+ Report.Warning (\r
+ 78, Location,\r
+ "the 'l' suffix is easily confused with digit `1'," +\r
+ " use 'L' for clarity");\r
+ }\r
+ goto case 'L';\r
+ \r
+ case 'L': \r
+ if (is_long)\r
+ scanning = false;\r
+ is_long = true;\r
+ getChar ();\r
+ break;\r
+ \r
+ default:\r
+ scanning = false;\r
+ break;\r
+ }\r
+ c = peekChar ();\r
+ } while (scanning);\r
+ }\r
+\r
+ if (is_long && is_unsigned){\r
+ val = ul;\r
+ return Token.LITERAL_INTEGER;\r
+ } else if (is_unsigned){\r
+ // uint if possible, or ulong else.\r
+\r
+ if ((ul & 0xffffffff00000000) == 0)\r
+ val = (uint) ul;\r
+ else\r
+ val = ul;\r
+ } else if (is_long){\r
+ // long if possible, ulong otherwise\r
+ if ((ul & 0x8000000000000000) != 0)\r
+ val = ul;\r
+ else\r
+ val = (long) ul;\r
+ } else {\r
+ // int, uint, long or ulong in that order\r
+ if ((ul & 0xffffffff00000000) == 0){\r
+ uint ui = (uint) ul;\r
+ \r
+ if ((ui & 0x80000000) != 0)\r
+ val = ui;\r
+ else\r
+ val = (int) ui;\r
+ } else {\r
+ if ((ul & 0x8000000000000000) != 0)\r
+ val = ul;\r
+ else\r
+ val = (long) ul;\r
+ }\r
+ }\r
return Token.LITERAL_INTEGER;\r
}\r
- \r
- void adjust_int (int t)\r
+ \r
+ //\r
+ // given `c' as the next char in the input decide whether\r
+ // we need to convert to a special type, and then choose\r
+ // the best representation for the integer\r
+ //\r
+ int adjust_int (int c)\r
{\r
- val = new System.Int32();\r
- val = System.Int32.Parse (number.ToString (), 0);\r
- }\r
+ try {\r
+ if (number_pos > 9){\r
+ ulong ul = (uint) (number_builder [0] - '0');\r
\r
+ for (int i = 1; i < number_pos; i++){\r
+ ul = checked ((ul * 10) + ((uint)(number_builder [i] - '0')));\r
+ }\r
+ return integer_type_suffix (ul, c);\r
+ } else {\r
+ uint ui = (uint) (number_builder [0] - '0');\r
+\r
+ for (int i = 1; i < number_pos; i++){\r
+ ui = checked ((ui * 10) + ((uint)(number_builder [i] - '0')));\r
+ }\r
+ return integer_type_suffix (ui, c);\r
+ }\r
+ } catch (OverflowException) {\r
+ error_details = "Integral constant is too large";\r
+ Report.Error (1021, Location, error_details);\r
+ val = 0ul;\r
+ return Token.LITERAL_INTEGER;\r
+ }\r
+ }\r
+ \r
int adjust_real (int t)\r
{\r
- string s = number.ToString ();\r
+ string s = new String (number_builder, 0, number_pos);\r
\r
switch (t){\r
case Token.LITERAL_DECIMAL:\r
- val = new System.Decimal ();\r
- val = System.Decimal.Parse (\r
- s, styles, csharp_format_info);\r
- break;\r
- case Token.LITERAL_DOUBLE:\r
- val = new System.Double ();\r
- val = System.Double.Parse (\r
- s, styles, csharp_format_info);\r
+ try {\r
+ val = System.Decimal.Parse (s, styles, csharp_format_info);\r
+ } catch (OverflowException) {\r
+ val = 0m; \r
+ error_details = "Floating-point constant is outside the range of the type 'decimal'";\r
+ Report.Error (594, Location, error_details);\r
+ }\r
break;\r
case Token.LITERAL_FLOAT:\r
- val = new System.Double ();\r
- val = (float) System.Double.Parse (\r
- s, styles, csharp_format_info);\r
+ try {\r
+ val = (float) System.Double.Parse (s, styles, csharp_format_info);\r
+ } catch (OverflowException) {\r
+ val = 0.0f; \r
+ error_details = "Floating-point constant is outside the range of the type 'float'";\r
+ Report.Error (594, Location, error_details);\r
+ }\r
break;\r
-\r
+ \r
+ case Token.LITERAL_DOUBLE:\r
case Token.NONE:\r
- val = new System.Double ();\r
- val = System.Double.Parse (\r
- s, styles, csharp_format_info);\r
t = Token.LITERAL_DOUBLE;\r
+ try {\r
+ val = System.Double.Parse (s, styles, csharp_format_info);\r
+ } catch (OverflowException) {\r
+ val = 0.0; \r
+ error_details = "Floating-point constant is outside the range of the type 'double'";\r
+ Report.Error (594, Location, error_details);\r
+ }\r
break;\r
}\r
return t;\r
}\r
\r
+ int handle_hex ()\r
+ {\r
+ int d;\r
+ ulong ul;\r
+ \r
+ getChar ();\r
+ while ((d = peekChar ()) != -1){\r
+ if (is_hex (d)){\r
+ if (number_pos == 16){\r
+ Report.Error (1021, Location, "Integral constant too large");\r
+ return Token.ERROR;\r
+ }\r
+ number_builder [number_pos++] = (char) d;\r
+ getChar ();\r
+ } else\r
+ break;\r
+ }\r
+ \r
+ string s = new String (number_builder, 0, number_pos);\r
+ if (number_pos <= 8)\r
+ ul = System.UInt32.Parse (s, NumberStyles.HexNumber);\r
+ else\r
+ ul = System.UInt64.Parse (s, NumberStyles.HexNumber);\r
+ return integer_type_suffix (ul, peekChar ());\r
+ }\r
+\r
//\r
// Invoked if we know we have .digits or digits\r
//\r
int is_number (int c)\r
{\r
bool is_real = false;\r
- number = new System.Text.StringBuilder ();\r
int type;\r
\r
- number.Length = 0;\r
-\r
- if (Char.IsDigit ((char)c)){\r
- if (c == '0' && peekChar () == 'x' || peekChar () == 'X'){\r
- ulong ul;\r
- getChar ();\r
- hex_digits (-1);\r
+ number_pos = 0;\r
\r
- string s = number.ToString ();\r
+ if (c >= '0' && c <= '9'){\r
+ if (c == '0'){\r
+ int peek = peekChar ();\r
\r
- ul = System.UInt64.Parse (s, NumberStyles.HexNumber);\r
- if ((ul & 0xffffffff00000000) == 0){\r
- uint ui = (uint) ul;\r
- \r
- if ((ui & 0x80000000) != 0)\r
- val = ui;\r
- else\r
- val = (int) ui;\r
- } else {\r
- if ((ul & 0x8000000000000000) != 0)\r
- val = ul;\r
- else\r
- val = (long) ul;\r
- }\r
-\r
- return integer_type_suffix (peekChar ());\r
+ if (peek == 'x' || peek == 'X')\r
+ return handle_hex ();\r
}\r
decimal_digits (c);\r
c = getChar ();\r
if (c == '.'){\r
if (decimal_digits ('.')){\r
is_real = true;\r
- c = peekChar ();\r
+ c = getChar ();\r
} else {\r
putback ('.');\r
- number.Length -= 1;\r
- adjust_int (Token.LITERAL_INTEGER);\r
- return Token.LITERAL_INTEGER;\r
+ number_pos--;\r
+ return adjust_int (-1);\r
}\r
}\r
\r
if (c == 'e' || c == 'E'){\r
is_real = true;\r
- number.Append ("e");\r
- getChar ();\r
+ if (number_pos == max_number_size)\r
+ Error_NumericConstantTooLong ();\r
+ number_builder [number_pos++] = 'e';\r
+ c = getChar ();\r
\r
- c = peekChar ();\r
if (c == '+'){\r
- number.Append ((char) c);\r
- getChar ();\r
- c = peekChar ();\r
- } else if (c == '-'){\r
- number.Append ((char) c);\r
- getChar ();\r
- c = peekChar ();\r
+ if (number_pos == max_number_size)\r
+ Error_NumericConstantTooLong ();\r
+ number_builder [number_pos++] = '+';\r
+ c = -1;\r
+ } else if (c == '-') {\r
+ if (number_pos == max_number_size)\r
+ Error_NumericConstantTooLong ();\r
+ number_builder [number_pos++] = '-';\r
+ c = -1;\r
+ } else {\r
+ if (number_pos == max_number_size)\r
+ Error_NumericConstantTooLong ();\r
+ number_builder [number_pos++] = '+';\r
}\r
- decimal_digits (-1);\r
- c = peekChar ();\r
+ \r
+ decimal_digits (c);\r
+ c = getChar ();\r
}\r
\r
type = real_type_suffix (c);\r
if (type == Token.NONE && !is_real){\r
- type = integer_type_suffix (c);\r
- adjust_int (type);\r
putback (c);\r
- return type;\r
- } else\r
+ return adjust_int (c);\r
+ } else \r
is_real = true;\r
\r
+ if (type == Token.NONE){\r
+ putback (c);\r
+ }\r
+ \r
if (is_real)\r
return adjust_real (type);\r
\r
Console.WriteLine ("This should not be reached");\r
throw new Exception ("Is Number should never reach this point");\r
}\r
+\r
+ //\r
+ // Accepts exactly count (4 or 8) hex, no more no less\r
+ //\r
+ int getHex (int count, out bool error)\r
+ {\r
+ int [] buffer = new int [8];\r
+ int i;\r
+ int total = 0;\r
+ int c;\r
+ int top = count != -1 ? count : 4;\r
\r
+ getChar ();\r
+ error = false;\r
+ for (i = 0; i < top; i++){\r
+ c = getChar ();\r
+ \r
+ if (c >= '0' && c <= '9')\r
+ c = (int) c - (int) '0';\r
+ else if (c >= 'A' && c <= 'F')\r
+ c = (int) c - (int) 'A' + 10;\r
+ else if (c >= 'a' && c <= 'f')\r
+ c = (int) c - (int) 'a' + 10;\r
+ else {\r
+ error = true;\r
+ return 0;\r
+ }\r
+ \r
+ total = (total * 16) + c;\r
+ if (count == -1){\r
+ int p = peekChar ();\r
+ if (p == -1)\r
+ break;\r
+ if (!is_hex ((char)p))\r
+ break;\r
+ }\r
+ }\r
+ return total;\r
+ }\r
+\r
int escape (int c)\r
{\r
+ bool error;\r
int d;\r
int v;\r
\r
case 'v':\r
v = '\v'; break;\r
case 'r':\r
- v = 'c'; break;\r
+ v = '\r'; break;\r
case '\\':\r
v = '\\'; break;\r
case 'f':\r
v = '"'; break;\r
case '\'':\r
v = '\''; break;\r
+ case 'x':\r
+ v = getHex (-1, out error);\r
+ if (error)\r
+ goto default;\r
+ return v;\r
+ case 'u':\r
+ v = getHex (4, out error);\r
+ if (error)\r
+ goto default;\r
+ return v;\r
+ case 'U':\r
+ v = getHex (8, out error);\r
+ if (error)\r
+ goto default;\r
+ return v;\r
default:\r
- error_details = "cs1009: Unrecognized escape sequence " + (char)d;\r
- return -1;\r
+ Report.Error (1009, Location, "Unrecognized escape sequence in " + (char)d);\r
+ return d;\r
}\r
getChar ();\r
return v;\r
{\r
if (putback_char != -1)\r
return putback_char;\r
- return reader.Peek ();\r
+ putback_char = reader.Read ();\r
+ return putback_char;\r
}\r
\r
- void putback (int c)\r
+ int peekChar2 ()\r
{\r
if (putback_char != -1)\r
+ return putback_char;\r
+ return reader.Peek ();\r
+ }\r
+ \r
+ void putback (int c)\r
+ {\r
+ if (putback_char != -1){\r
+ Console.WriteLine ("Col: " + col);\r
+ Console.WriteLine ("Row: " + line);\r
+ Console.WriteLine ("Name: " + ref_name.Name);\r
+ Console.WriteLine ("Current [{0}] putting back [{1}] ", putback_char, c);\r
throw new Exception ("This should not happen putback on putback");\r
+ }\r
putback_char = c;\r
}\r
\r
current_token = xtoken ();\r
return current_token;\r
}\r
+\r
+ static StringBuilder static_cmd_arg = new System.Text.StringBuilder ();\r
\r
- public int xtoken ()\r
+ void get_cmd_arg (out string cmd, out string arg)\r
{\r
- int t;\r
- bool allow_keyword_as_ident = false;\r
- bool doread = false;\r
int c;\r
+ \r
+ tokens_seen = false;\r
+ arg = "";\r
+ static_cmd_arg.Length = 0;\r
+ \r
+ while ((c = getChar ()) != -1 && (c != '\n') && (c != ' ') && (c != '\t') && (c != '\r')){\r
+ static_cmd_arg.Append ((char) c);\r
+ }\r
\r
- val = null;\r
- for (;(c = getChar ()) != -1; col++) {\r
+ cmd = static_cmd_arg.ToString ();\r
+\r
+ if (c == '\n'){\r
+ line++;\r
+ ref_line++;\r
+ return;\r
+ } else if (c == '\r')\r
+ col = 0;\r
+\r
+ // skip over white space\r
+ while ((c = getChar ()) != -1 && (c != '\n') && ((c == '\r') || (c == ' ') || (c == '\t')))\r
+ ;\r
+\r
+ if (c == '\n'){\r
+ line++;\r
+ ref_line++;\r
+ return;\r
+ } else if (c == '\r'){\r
+ col = 0;\r
+ return;\r
+ }\r
+ \r
+ static_cmd_arg.Length = 0;\r
+ static_cmd_arg.Append ((char) c);\r
\r
- if (is_identifier_start_character ((char) c)){\r
- System.Text.StringBuilder id = new System.Text.StringBuilder ();\r
- string ids;\r
+ while ((c = getChar ()) != -1 && (c != '\n') && (c != '\r')){\r
+ static_cmd_arg.Append ((char) c);\r
+ }\r
+\r
+ if (c == '\n'){\r
+ line++;\r
+ ref_line++;\r
+ } else if (c == '\r')\r
+ col = 0;\r
+ arg = static_cmd_arg.ToString ().Trim ();\r
+ }\r
+\r
+ //\r
+ // Handles the #line directive\r
+ //\r
+ bool PreProcessLine (string arg)\r
+ {\r
+ if (arg == "")\r
+ return false;\r
+\r
+ if (arg == "default"){\r
+ ref_line = line;\r
+ ref_name = file_name;\r
+ Location.Push (ref_name);\r
+ return true;\r
+ }\r
+ \r
+ try {\r
+ int pos;\r
+\r
+ if ((pos = arg.IndexOf (' ')) != -1 && pos != 0){\r
+ ref_line = System.Int32.Parse (arg.Substring (0, pos));\r
+ pos++;\r
\r
- id.Append ((char) c);\r
+ char [] quotes = { '\"' };\r
\r
- while ((c = peekChar ()) != -1) {\r
- if (is_identifier_part_character ((char) c)){\r
- id.Append ((char)getChar ());\r
- col++;\r
- } else \r
- break;\r
+ string name = arg.Substring (pos). Trim (quotes);\r
+ ref_name = Location.LookupFile (name);\r
+ Location.Push (ref_name);\r
+ } else {\r
+ ref_line = System.Int32.Parse (arg);\r
+ }\r
+ } catch {\r
+ return false;\r
+ }\r
+ \r
+ return true;\r
+ }\r
+\r
+ //\r
+ // Handles #define and #undef\r
+ //\r
+ void PreProcessDefinition (bool is_define, string arg)\r
+ {\r
+ if (arg == "" || arg == "true" || arg == "false"){\r
+ Report.Error (1001, Location, "Missing identifer to pre-processor directive");\r
+ return;\r
+ }\r
+\r
+ char[] whitespace = { ' ', '\t' };\r
+ if (arg.IndexOfAny (whitespace) != -1){\r
+ Report.Error (1025, Location, "Single-line comment or end-of-line expected");\r
+ return;\r
+ }\r
+\r
+ foreach (char c in arg){\r
+ if (!Char.IsLetter (c) && (c != '_')){\r
+ Report.Error (1001, Location, "Identifier expected");\r
+ return;\r
+ }\r
+ }\r
+\r
+ if (is_define){\r
+ if (defines == null)\r
+ defines = new Hashtable ();\r
+ define (arg);\r
+ } else {\r
+ if (defines == null)\r
+ return;\r
+ if (defines.Contains (arg))\r
+ defines.Remove (arg);\r
+ }\r
+ }\r
+\r
+ bool eval_val (string s)\r
+ {\r
+ if (s == "true")\r
+ return true;\r
+ if (s == "false")\r
+ return false;\r
+ \r
+ if (defines == null)\r
+ return false;\r
+ if (defines.Contains (s))\r
+ return true;\r
+\r
+ return false;\r
+ }\r
+\r
+ bool pp_primary (ref string s)\r
+ {\r
+ s = s.Trim ();\r
+ int len = s.Length;\r
+\r
+ if (len > 0){\r
+ char c = s [0];\r
+ \r
+ if (c == '('){\r
+ s = s.Substring (1);\r
+ bool val = pp_expr (ref s);\r
+ if (s.Length > 0 && s [0] == ')'){\r
+ s = s.Substring (1);\r
+ return val;\r
}\r
- \r
- ids = id.ToString ();\r
+ Error_InvalidDirective ();\r
+ return false;\r
+ }\r
+ \r
+ if (is_identifier_start_character (c)){\r
+ int j = 1;\r
\r
- if (!is_keyword (ids) || allow_keyword_as_ident) {\r
- val = ids;\r
- return Token.IDENTIFIER;\r
+ while (j < len){\r
+ c = s [j];\r
+ \r
+ if (is_identifier_part_character (c)){\r
+ j++;\r
+ continue;\r
+ }\r
+ bool v = eval_val (s.Substring (0, j));\r
+ s = s.Substring (j);\r
+ return v;\r
+ }\r
+ bool vv = eval_val (s);\r
+ s = "";\r
+ return vv;\r
+ }\r
+ }\r
+ Error_InvalidDirective ();\r
+ return false;\r
+ }\r
+ \r
+ bool pp_unary (ref string s)\r
+ {\r
+ s = s.Trim ();\r
+ int len = s.Length;\r
+\r
+ if (len > 0){\r
+ if (s [0] == '!'){\r
+ if (len > 1 && s [1] == '='){\r
+ Error_InvalidDirective ();\r
+ return false;\r
+ }\r
+ s = s.Substring (1);\r
+ return ! pp_primary (ref s);\r
+ } else\r
+ return pp_primary (ref s);\r
+ } else {\r
+ Error_InvalidDirective ();\r
+ return false;\r
+ }\r
+ }\r
+ \r
+ bool pp_eq (ref string s)\r
+ {\r
+ bool va = pp_unary (ref s);\r
+\r
+ s = s.Trim ();\r
+ int len = s.Length;\r
+ if (len > 0){\r
+ if (s [0] == '='){\r
+ if (len > 2 && s [1] == '='){\r
+ s = s.Substring (2);\r
+ return va == pp_unary (ref s);\r
+ } else {\r
+ Error_InvalidDirective ();\r
+ return false;\r
+ }\r
+ } else if (s [0] == '!' && len > 1 && s [1] == '='){\r
+ s = s.Substring (2);\r
+\r
+ return va != pp_unary (ref s);\r
+\r
+ } \r
+ }\r
+\r
+ return va;\r
+ \r
+ }\r
+ \r
+ bool pp_and (ref string s)\r
+ {\r
+ bool va = pp_eq (ref s);\r
+\r
+ s = s.Trim ();\r
+ int len = s.Length;\r
+ if (len > 0){\r
+ if (s [0] == '&'){\r
+ if (len > 2 && s [1] == '&'){\r
+ s = s.Substring (2);\r
+ return (va & pp_eq (ref s));\r
+ } else {\r
+ Error_InvalidDirective ();\r
+ return false;\r
+ }\r
+ } \r
+ }\r
+ return va;\r
+ }\r
+ \r
+ //\r
+ // Evaluates an expression for `#if' or `#elif'\r
+ //\r
+ bool pp_expr (ref string s)\r
+ {\r
+ bool va = pp_and (ref s);\r
+ s = s.Trim ();\r
+ int len = s.Length;\r
+ if (len > 0){\r
+ char c = s [0];\r
+ \r
+ if (c == '|'){\r
+ if (len > 2 && s [1] == '|'){\r
+ s = s.Substring (2);\r
+ return va | pp_expr (ref s);\r
+ } else {\r
+ Error_InvalidDirective ();\r
+ return false;\r
}\r
+ } \r
+ }\r
+ \r
+ return va;\r
+ }\r
\r
- // true, false and null are in the hash anyway.\r
- return getKeyword (ids);\r
+ bool eval (string s)\r
+ {\r
+ bool v = pp_expr (ref s);\r
+ s = s.Trim ();\r
+ if (s.Length != 0){\r
+ Error_InvalidDirective ();\r
+ return false;\r
+ }\r
+\r
+ return v;\r
+ }\r
+ \r
+ void Error_InvalidDirective ()\r
+ {\r
+ Report.Error (1517, Location, "Invalid pre-processor directive");\r
+ }\r
\r
+ void Error_UnexpectedDirective (string extra)\r
+ {\r
+ Report.Error (\r
+ 1028, Location,\r
+ "Unexpected processor directive (" + extra + ")");\r
+ }\r
+\r
+ void Error_TokensSeen ()\r
+ {\r
+ Report.Error (\r
+ 1032, Location,\r
+ "Cannot define or undefine pre-processor symbols after a token in the file");\r
+ }\r
+ \r
+ //\r
+ // if true, then the code continues processing the code\r
+ // if false, the code stays in a loop until another directive is\r
+ // reached.\r
+ //\r
+ bool handle_preprocessing_directive (bool caller_is_taking)\r
+ {\r
+ char [] blank = { ' ', '\t' };\r
+ string cmd, arg;\r
+ bool region_directive = false;\r
+\r
+ get_cmd_arg (out cmd, out arg);\r
+\r
+ // Eat any trailing whitespaces and single-line comments\r
+ if (arg.IndexOf ("//") != -1)\r
+ arg = arg.Substring (0, arg.IndexOf ("//"));\r
+ arg = arg.TrimEnd (' ', '\t');\r
+\r
+ //\r
+ // The first group of pre-processing instructions is always processed\r
+ //\r
+ switch (cmd){\r
+ case "line":\r
+ if (!PreProcessLine (arg))\r
+ Report.Error (\r
+ 1576, Location,\r
+ "Argument to #line directive is missing or invalid");\r
+ return true;\r
+\r
+ case "region":\r
+ region_directive = true;\r
+ arg = "true";\r
+ goto case "if";\r
+\r
+ case "endregion":\r
+ region_directive = true;\r
+ goto case "endif";\r
+ \r
+ case "if":\r
+ if (arg == ""){\r
+ Error_InvalidDirective ();\r
+ return true;\r
}\r
+ bool taking = false;\r
+ if (ifstack == null)\r
+ ifstack = new Stack ();\r
\r
- if (c == '.'){\r
- if (Char.IsDigit ((char) peekChar ()))\r
- return is_number (c);\r
- return Token.DOT;\r
+ if (ifstack.Count == 0){\r
+ taking = true;\r
+ } else {\r
+ int state = (int) ifstack.Peek ();\r
+ if ((state & TAKING) != 0)\r
+ taking = true;\r
+ }\r
+\r
+ if (eval (arg) && taking){\r
+ int push = TAKING | TAKEN_BEFORE | PARENT_TAKING;\r
+ if (region_directive)\r
+ push |= REGION;\r
+ ifstack.Push (push);\r
+ return true;\r
+ } else {\r
+ int push = (taking ? PARENT_TAKING : 0);\r
+ if (region_directive)\r
+ push |= REGION;\r
+ ifstack.Push (push);\r
+ return false;\r
}\r
\r
- if (Char.IsDigit ((char) c))\r
- return is_number (c);\r
+ case "endif":\r
+ if (ifstack == null || ifstack.Count == 0){\r
+ Error_UnexpectedDirective ("no #if for this #endif");\r
+ return true;\r
+ } else {\r
+ int pop = (int) ifstack.Pop ();\r
+ \r
+ if (region_directive && ((pop & REGION) == 0))\r
+ Report.Error (1027, Location, "#endif directive expected");\r
+ else if (!region_directive && ((pop & REGION) != 0))\r
+ Report.Error (1038, Location, "#endregion directive expected");\r
+ \r
+ if (ifstack.Count == 0)\r
+ return true;\r
+ else {\r
+ int state = (int) ifstack.Peek ();\r
+\r
+ if ((state & TAKING) != 0)\r
+ return true;\r
+ else\r
+ return false;\r
+ }\r
+ }\r
+\r
+ case "elif":\r
+ if (ifstack == null || ifstack.Count == 0){\r
+ Error_UnexpectedDirective ("no #if for this #elif");\r
+ return true;\r
+ } else {\r
+ int state = (int) ifstack.Peek ();\r
+\r
+ if ((state & REGION) != 0) {\r
+ Report.Error (1038, Location, "#endregion directive expected");\r
+ return true;\r
+ }\r
+\r
+ if ((state & ELSE_SEEN) != 0){\r
+ Error_UnexpectedDirective ("#elif not valid after #else");\r
+ return true;\r
+ }\r
+\r
+ if ((state & (TAKEN_BEFORE | TAKING)) != 0)\r
+ return false;\r
+\r
+ if (eval (arg) && ((state & PARENT_TAKING) != 0)){\r
+ state = (int) ifstack.Pop ();\r
+ ifstack.Push (state | TAKING | TAKEN_BEFORE);\r
+ return true;\r
+ } else \r
+ return false;\r
+ }\r
+\r
+ case "else":\r
+ if (ifstack == null || ifstack.Count == 0){\r
+ Report.Error (\r
+ 1028, Location,\r
+ "Unexpected processor directive (no #if for this #else)");\r
+ return true;\r
+ } else {\r
+ int state = (int) ifstack.Peek ();\r
+\r
+ if ((state & REGION) != 0) {\r
+ Report.Error (1038, Location, "#endregion directive expected");\r
+ return true;\r
+ }\r
+\r
+ if ((state & ELSE_SEEN) != 0){\r
+ Error_UnexpectedDirective ("#else within #else");\r
+ return true;\r
+ }\r
+\r
+ ifstack.Pop ();\r
+\r
+ bool ret;\r
+ if ((state & TAKEN_BEFORE) == 0){\r
+ ret = ((state & PARENT_TAKING) != 0);\r
+ } else\r
+ ret = false;\r
+ \r
+ if (ret)\r
+ state |= TAKING;\r
+ else\r
+ state &= ~TAKING;\r
+ \r
+ ifstack.Push (state | ELSE_SEEN);\r
+ \r
+ return ret;\r
+ }\r
+ }\r
+\r
+ //\r
+ // These are only processed if we are in a `taking' block\r
+ //\r
+ if (!caller_is_taking)\r
+ return false;\r
+ \r
+ switch (cmd){\r
+ case "define":\r
+ if (any_token_seen){\r
+ Error_TokensSeen ();\r
+ return true;\r
+ }\r
+ PreProcessDefinition (true, arg);\r
+ return true;\r
+\r
+ case "undef":\r
+ if (any_token_seen){\r
+ Error_TokensSeen ();\r
+ return true;\r
+ }\r
+ PreProcessDefinition (false, arg);\r
+ return true;\r
+\r
+ case "error":\r
+ Report.Error (1029, Location, "#error: '" + arg + "'");\r
+ return true;\r
+\r
+ case "warning":\r
+ Report.Warning (1030, Location, "#warning: '" + arg + "'");\r
+ return true;\r
+ }\r
+\r
+ Report.Error (1024, Location, "Preprocessor directive expected (got: " + cmd + ")");\r
+ return true;\r
+\r
+ }\r
+\r
+ private int consume_string (bool quoted) \r
+ {\r
+ int c;\r
+ string_builder.Length = 0;\r
+ \r
+ while ((c = getChar ()) != -1){\r
+ if (c == '"'){\r
+ if (quoted && peekChar () == '"'){\r
+ string_builder.Append ((char) c);\r
+ getChar ();\r
+ continue;\r
+ } else {\r
+ val = string_builder.ToString ();\r
+ return Token.LITERAL_STRING;\r
+ }\r
+ }\r
+\r
+ if (c == '\n'){\r
+ if (!quoted)\r
+ Report.Error (1010, Location, "Newline in constant");\r
+ line++;\r
+ ref_line++;\r
+ col = 0;\r
+ } else\r
+ col++;\r
+\r
+ if (!quoted){\r
+ c = escape (c);\r
+ if (c == -1)\r
+ return Token.ERROR;\r
+ }\r
+ string_builder.Append ((char) c);\r
+ }\r
+\r
+ Report.Error (1039, Location, "Unterminated string literal");\r
+ return Token.EOF;\r
+ }\r
+\r
+ private int consume_identifier (int s, bool quoted) \r
+ {\r
+ int pos = 1;\r
+ int c;\r
+ \r
+ id_builder [0] = (char) s;\r
+ \r
+ while ((c = reader.Read ()) != -1) {\r
+ if (is_identifier_part_character ((char) c)){\r
+ if (pos == max_id_size){\r
+ Report.Error (645, Location, "Identifier too long (limit is 512 chars)");\r
+ return Token.ERROR;\r
+ }\r
+ \r
+ id_builder [pos++] = (char) c;\r
+ putback_char = -1;\r
+ col++;\r
+ } else {\r
+ putback_char = c;\r
+ break;\r
+ }\r
+ }\r
+\r
+ string ids = new String (id_builder, 0, pos);\r
+\r
+ if (s >= 'a'){\r
+ int keyword = GetKeyword (ids);\r
+ if (keyword == -1 || quoted){\r
+ val = ids;\r
+ return Token.IDENTIFIER;\r
+ }\r
+ return keyword;\r
+ }\r
+ val = ids;\r
+ return Token.IDENTIFIER;\r
+ }\r
+ \r
+ public int xtoken ()\r
+ {\r
+ int t;\r
+ bool doread = false;\r
+ int c;\r
+\r
+ val = null;\r
+ // optimization: eliminate col and implement #directive semantic correctly.\r
+ for (;(c = getChar ()) != -1; col++) {\r
+ if (c == ' ' || c == '\t' || c == '\f' || c == '\v' || c == '\r' || c == 0xa0){\r
+ \r
+ if (c == '\t')\r
+ col = (((col + 8) / 8) * 8) - 1;\r
+ continue;\r
+ }\r
\r
// Handle double-slash comments.\r
if (c == '/'){\r
\r
if (d == '/'){\r
getChar ();\r
- while ((d = getChar ()) != -1 && (d != '\n'))\r
+ while ((d = getChar ()) != -1 && (d != '\n') && d != '\r')\r
col++;\r
- line++;\r
- ref_line++;\r
+ if (d == '\n'){\r
+ line++;\r
+ ref_line++;\r
+ col = 0;\r
+ }\r
+ any_token_seen |= tokens_seen;\r
+ tokens_seen = false;\r
continue;\r
} else if (d == '*'){\r
getChar ();\r
if (d == '\n'){\r
line++;\r
ref_line++;\r
+ col = 0;\r
+ any_token_seen |= tokens_seen;\r
+ tokens_seen = false;\r
}\r
- col++;\r
}\r
continue;\r
}\r
+ goto is_punct_label;\r
}\r
\r
- /* For now, ignore pre-processor commands */\r
- if (col == 1 && c == '#'){\r
- System.Text.StringBuilder s = new System.Text.StringBuilder ();\r
- \r
- while ((c = getChar ()) != -1 && (c != '\n')){\r
- s.Append ((char) c);\r
- }\r
- if (String.Compare (s.ToString (), 0, "line", 0, 4) == 0){\r
- string arg = s.ToString ().Substring (5);\r
- int pos;\r
-\r
- if ((pos = arg.IndexOf (' ')) != -1 && pos != 0){\r
- ref_line = System.Int32.Parse (arg.Substring (0, pos));\r
- pos++;\r
-\r
- char [] quotes = { '\"' };\r
-\r
- ref_name = arg.Substring (pos);\r
- ref_name.TrimStart (quotes);\r
- ref_name.TrimEnd (quotes);\r
- } else\r
- ref_line = System.Int32.Parse (arg);\r
- }\r
- line++;\r
- ref_line++;\r
- continue;\r
- }\r
\r
+ if (is_identifier_start_character ((char)c)){\r
+ tokens_seen = true;\r
+ return consume_identifier (c, false);\r
+ }\r
+\r
+ is_punct_label:\r
if ((t = is_punct ((char)c, ref doread)) != Token.ERROR){\r
+ tokens_seen = true;\r
if (doread){\r
getChar ();\r
col++;\r
}\r
return t;\r
}\r
- \r
- if (c == '"'){\r
- System.Text.StringBuilder s = new System.Text.StringBuilder ();\r
\r
- while ((c = getChar ()) != -1){\r
- if (c == '"'){\r
- val = s.ToString ();\r
- return Token.LITERAL_STRING;\r
- }\r
+ // white space\r
+ if (c == '\n'){\r
+ line++;\r
+ ref_line++;\r
+ col = 0;\r
+ any_token_seen |= tokens_seen;\r
+ tokens_seen = false;\r
+ continue;\r
+ }\r
\r
- c = escape (c);\r
- if (c == -1)\r
- return Token.ERROR;\r
- s.Append ((char) c);\r
+ if (c >= '0' && c <= '9'){\r
+ tokens_seen = true;\r
+ return is_number (c);\r
+ }\r
+\r
+ if (c == '.'){\r
+ tokens_seen = true;\r
+ int peek = peekChar ();\r
+ if (peek >= '0' && peek <= '9')\r
+ return is_number (c);\r
+ return Token.DOT;\r
+ }\r
+ \r
+ /* For now, ignore pre-processor commands */\r
+ // FIXME: In C# the '#' is not limited to appear\r
+ // on the first column.\r
+ if (c == '#' && !tokens_seen){\r
+ bool cont = true;\r
+ \r
+ start_again:\r
+ \r
+ cont = handle_preprocessing_directive (cont);\r
+\r
+ if (cont){\r
+ col = 0;\r
+ continue;\r
+ }\r
+ col = 1;\r
+\r
+ bool skipping = false;\r
+ for (;(c = getChar ()) != -1; col++){\r
+ if (c == '\n'){\r
+ col = 0;\r
+ line++;\r
+ ref_line++;\r
+ skipping = false;\r
+ } else if (c == ' ' || c == '\t' || c == '\v' || c == '\r' || c == 0xa0)\r
+ continue;\r
+ else if (c != '#')\r
+ skipping = true;\r
+ if (c == '#' && !skipping)\r
+ goto start_again;\r
}\r
+ any_token_seen |= tokens_seen;\r
+ tokens_seen = false;\r
+ if (c == -1)\r
+ Report.Error (1027, Location, "#endif/#endregion expected");\r
+ continue;\r
}\r
+ \r
+ if (c == '"') \r
+ return consume_string (false);\r
\r
if (c == '\''){\r
c = getChar ();\r
+ tokens_seen = true;\r
if (c == '\''){\r
- error_details = "CS1011: Empty character literal";\r
+ error_details = "Empty character literal";\r
+ Report.Error (1011, Location, error_details);\r
return Token.ERROR;\r
}\r
c = escape (c);\r
val = new System.Char ();\r
val = (char) c;\r
c = getChar ();\r
+\r
if (c != '\''){\r
- error_details = "CS1012: Too many characters in character literal";\r
+ error_details = "Too many characters in character literal";\r
+ Report.Error (1012, Location, error_details);\r
+\r
// Try to recover, read until newline or next "'"\r
while ((c = getChar ()) != -1){\r
- if (c == '\n' || c == '\'')\r
+ if (c == '\n' || c == '\''){\r
+ line++;\r
+ ref_line++;\r
+ col = 0;\r
break;\r
+ } else\r
+ col++;\r
\r
}\r
return Token.ERROR;\r
return Token.LITERAL_CHARACTER;\r
}\r
\r
- // white space\r
- if (c == '\n'){\r
- line++;\r
- ref_line++;\r
- col = 0;\r
- continue;\r
- }\r
- if (c == ' ' || c == '\t' || c == '\f' || c == '\v' || c == '\r'){\r
- if (c == '\t')\r
- col = (((col + 8) / 8) * 8) - 1;\r
- \r
- continue;\r
- }\r
-\r
- if (c == '@'){\r
- allow_keyword_as_ident = true;\r
- continue;\r
+ if (c == '@') {\r
+ c = getChar ();\r
+ if (c == '"') {\r
+ tokens_seen = true;\r
+ return consume_string (true);\r
+ } else if (is_identifier_start_character ((char) c)){\r
+ return consume_identifier (c, true);\r
+ } else {\r
+ Report.Error (1033, Location, "'@' must be followed by string constant or identifier");\r
+ }\r
}\r
\r
error_details = ((char)c).ToString ();\r
\r
return Token.EOF;\r
}\r
+\r
+ public void cleanup ()\r
+ {\r
+ if (ifstack != null && ifstack.Count >= 1) {\r
+ int state = (int) ifstack.Pop ();\r
+ if ((state & REGION) != 0)\r
+ Report.Error (1038, "#endregion directive expected");\r
+ else \r
+ Report.Error (1027, "#endif directive expected");\r
+ }\r
+ \r
+ }\r
+\r
}\r
}\r
\r
projects / mono.git / blobdiff