gzdoom-gles/src/sc_man_scanner.re
Christoph Oelckers cf8447d19c -protected critical portal data from getting written to by user code.
This data is game critical and may only be altered by code that knows what is allowed and what not. It must never be altered by any user code ever.
However, since the SkyViewpoint actors need to set up some relations between themselves and the default sky portals the previously purely internal 'internal' flag has been exported as a new keyword.
2018-04-15 12:13:02 +02:00

526 lines
15 KiB
C++

/*
**
**
**---------------------------------------------------------------------------
** Copyright 2005-2016 Randy Heit
** Copyright 2005-2016 Christoph Oelckers
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**---------------------------------------------------------------------------
**
*/
#define YYCTYPE unsigned char
#define YYCURSOR cursor
#define YYLIMIT limit
#define YYMARKER marker
#define YYFILL(n) {}
#if 0 // As long as the buffer ends with '\n', we need do nothing special for YYFILL.
// This buffer must be as large as the largest YYFILL call
YYCTYPE eofbuf[9];
#define YYFILL(n) \
{ if(!sc_End) { \
if(n == 2) { eofbuf[0] = *cursor; } \
else if(n >= 3 && n <= 9) { memcpy(eofbuf, cursor, n-1); } \
eofbuf[n-1] = '\n'; \
cursor = eofbuf; \
limit = eofbuf + n - 1; \
sc_End = true; } \
} \
assert(n <= sizeof eofbuf) // Semicolon intentionally omitted
#endif
//#define YYDEBUG(s,c) { Printf ("%d: %02x\n", s, c); }
#define YYDEBUG(s,c)
const char *cursor = ScriptPtr;
const char *limit = ScriptEndPtr;
std1:
tok = YYCURSOR;
std2:
/*!re2c
any = [\000-\377];
WSP = ([\000- ]\[\n]);
NWS = (any\[\000- ]);
O = [0-7];
D = [0-9];
L = [a-zA-Z_];
H = [a-fA-F0-9];
E = [Ee] [+-]? D+;
FS = [fF];
IS = [uUlL];
ESC = [\\] ([abcfnrtv?'"\\] | "x" H+ | O+);
TOK1 = [{}|=];
TOKC = [{}|=/`~!@#$%^&*()\[\]\\?\-=+;:<>,.];
STOP1 = (TOK1|["/;]);
STOPC = (TOKC|["]);
TOK2 = (NWS\STOP1);
TOKC2 = (NWS\STOPC);
*/
#define RET(x) TokenType = (x); goto normal_token;
if (tokens && StateMode != 0)
{
/*!re2c
"/*" { goto comment; } /* C comment */
"//" (any\"\n")* "\n" { goto newline; } /* C++ comment */
("#region"|"#endregion") (any\"\n")* "\n"
{ goto newline; } /* Region blocks [mxd] */
(["](([\\]["])|[^"])*["]) { RET(TK_StringConst); }
'stop' { RET(TK_Stop); }
'wait' { RET(TK_Wait); }
'fail' { RET(TK_Fail); }
'loop' { RET(TK_Loop); }
'goto' { StateMode = 0; StateOptions = false; RET(TK_Goto); }
":" { RET(':'); }
";" { RET(';'); }
"}" { StateMode = 0; StateOptions = false; RET('}'); }
WSP+ { goto std1; }
"\n" { goto newline; }
TOKS = (NWS\[/":;}]);
TOKS* ([/] (TOKS\[*]) TOKS*)*
{ RET(TK_NonWhitespace); }
*/
}
else if (tokens) // A well-defined scanner, based on the c.re example.
{
/*!re2c
"/*" { goto comment; } /* C comment */
"//" (any\"\n")* "\n" { goto newline; } /* C++ comment */
("#region"|"#endregion") (any\"\n")* "\n"
{ goto newline; } /* Region blocks [mxd] */
/* C Keywords */
'break' { RET(TK_Break); }
'case' { RET(TK_Case); }
'const' { RET(TK_Const); }
'continue' { RET(TK_Continue); }
'default' { RET(TK_Default); }
'do' { RET(TK_Do); }
'else' { RET(TK_Else); }
'for' { RET(TK_For); }
'goto' { RET(TK_Goto); }
'if' { RET(TK_If); }
'return' { RET(TK_Return); }
'switch' { RET(TK_Switch); }
'until' { RET(TK_Until); }
'volatile' { RET(TK_Volatile); }
'while' { RET(TK_While); }
/* Type names */
'bool' { RET(TK_Bool); }
'float' { RET(TK_Float); }
'double' { RET(TK_Double); }
'char' { RET(TK_Char); }
'byte' { RET(TK_Byte); }
'sbyte' { RET(TK_SByte); }
'short' { RET(TK_Short); }
'ushort' { RET(TK_UShort); }
'int8' { RET(TK_Int8); }
'uint8' { RET(TK_UInt8); }
'int16' { RET(TK_Int16); }
'uint16' { RET(TK_UInt16); }
'int' { RET(TK_Int); }
'uint' { RET(TK_UInt); }
'long' { RET(TK_Long); }
'ulong' { RET(TK_ULong); }
'void' { RET(TK_Void); }
'struct' { RET(TK_Struct); }
'class' { RET(TK_Class); }
'enum' { RET(TK_Enum); }
'name' { RET(TK_Name); }
'string' { RET(TK_String); }
'sound' { RET(TK_Sound); }
'state' { RET(TK_State); }
'color' { RET(TK_Color); }
'vector2' { RET(TK_Vector2); }
'vector3' { RET(TK_Vector3); }
'map' { RET(TK_Map); }
'array' { RET(TK_Array); }
'in' { RET(TK_In); }
'sizeof' { RET(TK_SizeOf); }
'alignof' { RET(TK_AlignOf); }
/* Other keywords from UnrealScript */
'abstract' { RET(TK_Abstract); }
'foreach' { RET(TK_ForEach); }
'true' { RET(TK_True); }
'false' { RET(TK_False); }
'none' { RET(TK_None); }
'auto' { RET(TK_Auto); }
'property' { RET(TK_Property); }
'native' { RET(TK_Native); }
'var' { RET(TK_Var); }
'out' { RET(ParseVersion >= MakeVersion(1, 0, 0)? TK_Out : TK_Identifier); }
'static' { RET(TK_Static); }
'transient' { RET(ParseVersion >= MakeVersion(1, 0, 0)? TK_Transient : TK_Identifier); }
'final' { RET(ParseVersion >= MakeVersion(1, 0, 0)? TK_Final : TK_Identifier); }
'extend' { RET(ParseVersion >= MakeVersion(1, 0, 0)? TK_Extend : TK_Identifier); }
'protected' { RET(ParseVersion >= MakeVersion(1, 0, 0)? TK_Protected : TK_Identifier); }
'private' { RET(ParseVersion >= MakeVersion(1, 0, 0)? TK_Private : TK_Identifier); }
'dot' { RET(TK_Dot); }
'cross' { RET(TK_Cross); }
'virtual' { RET(ParseVersion >= MakeVersion(1, 0, 0)? TK_Virtual : TK_Identifier); }
'override' { RET(ParseVersion >= MakeVersion(1, 0, 0)? TK_Override : TK_Identifier); }
'vararg' { RET(ParseVersion >= MakeVersion(1, 0, 0)? TK_VarArg : TK_Identifier); }
'ui' { RET(ParseVersion >= MakeVersion(2, 4, 0)? TK_UI : TK_Identifier); }
'play' { RET(ParseVersion >= MakeVersion(2, 4, 0)? TK_Play : TK_Identifier); }
'clearscope' { RET(ParseVersion >= MakeVersion(2, 4, 0)? TK_ClearScope : TK_Identifier); }
'virtualscope' { RET(ParseVersion >= MakeVersion(2, 4, 0)? TK_VirtualScope : TK_Identifier); }
'super' { RET(ParseVersion >= MakeVersion(1, 0, 0)? TK_Super : TK_Identifier); }
'stop' { RET(TK_Stop); }
'null' { RET(TK_Null); }
'is' { RET(ParseVersion >= MakeVersion(1, 0, 0)? TK_Is : TK_Identifier); }
'replaces' { RET(ParseVersion >= MakeVersion(1, 0, 0)? TK_Replaces : TK_Identifier); }
'states' { RET(TK_States); }
'meta' { RET(ParseVersion >= MakeVersion(1, 0, 0)? TK_Meta : TK_Identifier); }
'deprecated' { RET(ParseVersion >= MakeVersion(1, 0, 0)? TK_Deprecated : TK_Identifier); }
'version' { RET(ParseVersion >= MakeVersion(2, 4, 0)? TK_Version : TK_Identifier); }
'action' { RET(ParseVersion >= MakeVersion(1, 0, 0)? TK_Action : TK_Identifier); }
'readonly' { RET(ParseVersion >= MakeVersion(1, 0, 0)? TK_ReadOnly : TK_Identifier); }
'internal' { RET(ParseVersion >= MakeVersion(3, 4, 0)? TK_Internal : TK_Identifier); }
'let' { RET(ParseVersion >= MakeVersion(1, 0, 0)? TK_Let : TK_Identifier); }
/* Actor state options */
'bright' { RET(StateOptions ? TK_Bright : TK_Identifier); }
'fast' { RET(StateOptions ? TK_Fast : TK_Identifier); }
'slow' { RET(StateOptions ? TK_Slow : TK_Identifier); }
'nodelay' { RET(StateOptions ? TK_NoDelay : TK_Identifier); }
'canraise' { RET(StateOptions ? TK_CanRaise : TK_Identifier); }
'offset' { RET(StateOptions ? TK_Offset : TK_Identifier); }
'light' { RET(StateOptions ? TK_Light : TK_Identifier); }
/* other DECORATE top level keywords */
'#include' { RET(TK_Include); }
L (L|D)* { RET(TK_Identifier); }
("0" [xX] H+ IS?IS?) | ("0" D+ IS?IS?) | (D+ IS?IS?)
{ RET(TK_IntConst); }
(D+ E FS?) | (D* "." D+ E? FS?) | (D+ "." D* E? FS?)
{ RET(TK_FloatConst); }
(["](([\\]["])|[^"])*["])
{ RET(TK_StringConst); }
(['] (any\[\n'])* ['])
{ RET(TK_NameConst); }
".." { RET(TK_DotDot); }
"..." { RET(TK_Ellipsis); }
">>>=" { RET(TK_URShiftEq); }
">>=" { RET(TK_RShiftEq); }
"<<=" { RET(TK_LShiftEq); }
"+=" { RET(TK_AddEq); }
"-=" { RET(TK_SubEq); }
"*=" { RET(TK_MulEq); }
"/=" { RET(TK_DivEq); }
"%=" { RET(TK_ModEq); }
"&=" { RET(TK_AndEq); }
"^=" { RET(TK_XorEq); }
"|=" { RET(TK_OrEq); }
">>>" { RET(TK_URShift); }
">>" { RET(TK_RShift); }
"<<" { RET(TK_LShift); }
"++" { RET(TK_Incr); }
"--" { RET(TK_Decr); }
"&&" { RET(TK_AndAnd); }
"||" { RET(TK_OrOr); }
"<=" { RET(TK_Leq); }
">=" { RET(TK_Geq); }
"==" { RET(TK_Eq); }
"!=" { RET(TK_Neq); }
"~==" { RET(TK_ApproxEq); }
"<>=" { RET(TK_LtGtEq); }
"**" { RET(TK_MulMul); }
"::" { RET(TK_ColonColon); }
"->" { RET(TK_Arrow); }
";" { StateOptions = false; RET(';'); }
"{" { StateOptions = false; RET('{'); }
"}" { RET('}'); }
"," { RET(','); }
":" { RET(':'); }
"=" { RET('='); }
"(" { RET('('); }
")" { RET(')'); }
"[" { RET('['); }
"]" { RET(']'); }
"." { RET('.'); }
"&" { RET('&'); }
"!" { RET('!'); }
"~" { RET('~'); }
"-" { RET('-'); }
"+" { RET('+'); }
"*" { RET('*'); }
"/" { RET('/'); }
"%" { RET('%'); }
"<" { RET('<'); }
">" { RET('>'); }
"^" { RET('^'); }
"|" { RET('|'); }
"?" { RET('?'); }
"#" { RET('#'); }
"@" { RET('@'); }
[ \t\v\f\r]+ { goto std1; }
"\n" { goto newline; }
any
{
ScriptError ("Unexpected character: %c (ASCII %d)\n", *tok, *tok);
goto std1;
}
*/
}
if (!CMode) // The classic Hexen scanner.
{
/*!re2c
"/*" { goto comment; } /* C comment */
("//"|";") (any\"\n")* "\n" { goto newline; } /* C++/Hexen comment */
("#region"|"#endregion") (any\"\n")* "\n"
{ goto newline; } /* Region blocks [mxd] */
WSP+ { goto std1; } /* whitespace */
"\n" { goto newline; }
"\"" { goto string; }
TOK1 { goto normal_token; }
/* Regular tokens may contain /, but they must not contain comment starts */
TOK2* ([/] (TOK2\[*]) TOK2*)* { goto normal_token; }
any { goto normal_token; } /* unknown character */
*/
}
else // A modified Hexen scanner for DECORATE.
{
/*!re2c
"/*" { goto comment; } /* C comment */
"//" (any\"\n")* "\n" { goto newline; } /* C++ comment */
("#region"|"#endregion") (any\"\n")* "\n"
{ goto newline; } /* Region blocks [mxd] */
WSP+ { goto std1; } /* whitespace */
"\n" { goto newline; }
"\"" { goto string; }
[-] { goto negative_check; }
((D* [.] D+) | (D+ [.] D*)) { goto normal_token; } /* decimal number */
(D+ E FS?) | (D* "." D+ E? FS?) | (D+ "." D* E? FS?) { goto normal_token; } /* float with exponent */
"::" { goto normal_token; }
"&&" { goto normal_token; }
"==" { goto normal_token; }
"||" { goto normal_token; }
"<<" { goto normal_token; }
">>" { goto normal_token; }
TOKC { goto normal_token; }
TOKC2+ { goto normal_token; }
any { goto normal_token; } /* unknown character */
*/
}
negative_check:
// re2c doesn't have enough state to handle '-' as the start of a negative number
// and as its own token, so help it out a little.
TokenType = '-';
if (YYCURSOR >= YYLIMIT)
{
goto normal_token;
}
if (*YYCURSOR >= '0' && *YYCURSOR <= '9')
{
goto std2;
}
if (*YYCURSOR != '.' || YYCURSOR+1 >= YYLIMIT)
{
goto normal_token;
}
if (*(YYCURSOR+1) >= '0' && *YYCURSOR <= '9')
{
goto std2;
}
goto normal_token;
comment:
/*!re2c
"*/"
{
if (YYCURSOR >= YYLIMIT)
{
ScriptPtr = ScriptEndPtr;
return_val = false;
goto end;
}
goto std1;
}
"\n"
{
if (YYCURSOR >= YYLIMIT)
{
ScriptPtr = ScriptEndPtr;
return_val = false;
goto end;
}
Line++;
Crossed = true;
goto comment;
}
any { goto comment; }
*/
newline:
if (YYCURSOR >= YYLIMIT)
{
ScriptPtr = ScriptEndPtr;
return_val = false;
goto end;
}
Line++;
Crossed = true;
goto std1;
normal_token:
ScriptPtr = (YYCURSOR >= YYLIMIT) ? ScriptEndPtr : cursor;
StringLen = int(ScriptPtr - tok);
if (tokens && (TokenType == TK_StringConst || TokenType == TK_NameConst))
{
StringLen -= 2;
if (StringLen >= MAX_STRING_SIZE)
{
BigStringBuffer = FString(tok+1, StringLen);
}
else
{
memcpy (StringBuffer, tok+1, StringLen);
}
if (StateMode && TokenType == TK_StringConst)
{
TokenType = TK_NonWhitespace;
}
}
else
{
if (StringLen >= MAX_STRING_SIZE)
{
BigStringBuffer = FString(tok, StringLen);
}
else
{
memcpy (StringBuffer, tok, StringLen);
}
}
if (tokens && StateMode)
{ // State mode is exited after two consecutive TK_NonWhitespace tokens
if (TokenType == TK_NonWhitespace)
{
StateMode--;
}
else
{
StateMode = 2;
}
}
if (StringLen < MAX_STRING_SIZE)
{
String = StringBuffer;
StringBuffer[StringLen] = '\0';
}
else
{
String = BigStringBuffer.LockBuffer();
}
return_val = true;
goto end;
string:
if (YYLIMIT != ScriptEndPtr)
{
ScriptPtr = ScriptEndPtr;
return_val = false;
goto end;
}
ScriptPtr = cursor;
BigStringBuffer = "";
for (StringLen = 0; cursor < YYLIMIT; ++cursor)
{
if (Escape && *cursor == '\\' && *(cursor + 1) == '"')
{
cursor++;
}
else if (*cursor == '\r' && *(cursor + 1) == '\n')
{
cursor++; // convert CR-LF to simply LF
}
else if (*cursor == '"')
{
break;
}
if (*cursor == '\n')
{
if (CMode)
{
if (!Escape || StringLen == 0 || String[StringLen - 1] != '\\')
{
ScriptError ("Unterminated string constant");
}
else
{
StringLen--; // overwrite the \ character with \n
}
}
Line++;
Crossed = true;
}
if (StringLen == MAX_STRING_SIZE)
{
BigStringBuffer.AppendCStrPart(StringBuffer, StringLen);
StringLen = 0;
}
StringBuffer[StringLen++] = *cursor;
}
if (BigStringBuffer.IsNotEmpty() || StringLen == MAX_STRING_SIZE)
{
BigStringBuffer.AppendCStrPart(StringBuffer, StringLen);
String = BigStringBuffer.LockBuffer();
StringLen = int(BigStringBuffer.Len());
}
else
{
String = StringBuffer;
StringBuffer[StringLen] = '\0';
}
ScriptPtr = cursor + 1;
return_val = true;
end: