- Fixed: The check arrays for BlockThingsIterators were not properly

freed and each iterator allocated a new one as a result.
- Split the Xlat parser context class into a generic part that can be 
  used for other Lemon-based parsers in the future and a smaller
  Xlat-specific part. 


SVN r892 (trunk)
This commit is contained in:
Christoph Oelckers 2008-04-08 15:07:09 +00:00
commit 3a14dab2e8
8 changed files with 691 additions and 476 deletions

View file

@ -41,9 +41,21 @@
#include "p_lnspec.h"
#include "info.h"
#include "gi.h"
#include "parsecontext.h"
#include "xlat_parser.h"
#include "xlat.h"
// Token types not used in the grammar
enum
{
XLAT_INCLUDE=128,
XLAT_STRING,
};
DEFINE_TOKEN_TRANS(XLAT_)
static FString LastTranslator;
TAutoGrowArray<FLineTrans> SimpleLineTranslations;
FBoomTranslator Boomish[MAX_BOOMISH];
@ -51,27 +63,6 @@ int NumBoomish;
TAutoGrowArray<FSectorTrans> SectorTranslations;
TArray<FSectorMask> SectorMasks;
// Token types not used in the grammar
enum
{
INCLUDE=128,
STRING,
};
struct Symbol
{
int Value;
char Sym[80];
};
union XlatToken
{
int val;
char sym[80];
char string[80];
Symbol *symval;
};
struct SpecialArgs
{
@ -105,49 +96,11 @@ struct ParseBoomArg
};
struct XlatParseContext
struct XlatParseContext : public FParseContext
{
TArray<Symbol> symbols;
int SourceLine;
const char *SourceFile;
int EnumVal;
XlatParseContext()
XlatParseContext(void *parser, ParseFunc parse, int *tt)
: FParseContext(parser, parse, tt)
{
SourceLine = 0;
SourceFile = NULL;
}
//==========================================================================
//
//
//
//==========================================================================
void AddSym (char *sym, int val)
{
Symbol syme;
syme.Value = val;
strncpy (syme.Sym, sym, 79);
syme.Sym[79]=0;
symbols.Push(syme);
}
//==========================================================================
//
//
//
//==========================================================================
bool FindSym (char *sym, Symbol **val)
{
for(unsigned i=0;i<symbols.Size(); i++)
{
if (strcmp (symbols[i].Sym, sym) == 0)
{
*val = &symbols[i];
return true;
}
}
return false;
}
//==========================================================================
@ -159,303 +112,43 @@ struct XlatParseContext
{
static const char tokens[][10] =
{
"include", "define", "enum",
"arg5", "arg4", "arg3", "arg2", "flags", "lineid", "tag",
"sector", "bitmask", "nobitmask", "clear"
"arg2", "arg3", "arg4", "arg5", "bitmask", "clear",
"define", "enum", "flags", "include", "lineid",
"nobitmask", "sector", "tag"
};
static const short types[] =
{
INCLUDE, DEFINE, ENUM,
ARG5, ARG4, ARG3, ARG2, FLAGS, TAG, TAG,
SECTOR, BITMASK, NOBITMASK, CLEAR
XLAT_ARG2, XLAT_ARG3, XLAT_ARG4, XLAT_ARG5, XLAT_BITMASK, XLAT_CLEAR,
XLAT_DEFINE, XLAT_ENUM, XLAT_FLAGS, XLAT_INCLUDE, XLAT_TAG,
XLAT_NOBITMASK, XLAT_SECTOR, XLAT_TAG,
};
int i;
for (i = sizeof(tokens)/sizeof(tokens[0])-1; i >= 0; i--)
{
if (strcmp (tok, tokens[i]) == 0)
{
*type = types[i];
return 1;
}
}
return 0;
}
int min = 0, max = sizeof(tokens)/sizeof(tokens[0]) - 1;
//==========================================================================
//
//
//
//==========================================================================
int GetToken (char *&sourcep, XlatToken *yylval)
{
char token[80];
int toksize;
int c;
loop:
while (isspace (c = *sourcep++) && c != 0)
while (min <= max)
{
if (c == '\n')
SourceLine++;
}
if (c == 0)
{
return 0;
}
if (isdigit (c))
{
int buildup = c - '0';
if (c == '0')
int mid = (min + max) / 2;
int lexval = stricmp (tok, tokens[mid]);
if (lexval == 0)
{
c = *sourcep++;
if (c == 'x' || c == 'X')
{
for (;;)
{
c = *sourcep++;
if (isdigit (c))
{
buildup = (buildup<<4) + c - '0';
}
else if (c >= 'a' && c <= 'f')
{
buildup = (buildup<<4) + c - 'a' + 10;
}
else if (c >= 'A' && c <= 'F')
{
buildup = (buildup<<4) + c - 'A' + 10;
}
else
{
sourcep--;
yylval->val = buildup;
return NUM;
}
}
}
else
{
sourcep--;
}
*type = types[mid];
return true;
}
while (isdigit (c = *sourcep++))
else if (lexval > 0)
{
buildup = buildup*10 + c - '0';
}
sourcep--;
yylval->val = buildup;
return NUM;
}
if (isalpha (c))
{
int buildup = 0;
token[0] = c;
toksize = 1;
while (toksize < 79 && (isalnum (c = *sourcep++) || c == '_'))
{
token[toksize++] = c;
}
token[toksize] = 0;
if (toksize == 79 && isalnum (c))
{
while (isalnum (c = *sourcep++))
;
}
sourcep--;
if (FindToken (token, &buildup))
{
return buildup;
}
if (FindSym (token, &yylval->symval))
{
return SYMNUM;
}
if ((yylval->val = P_FindLineSpecial(token)) != 0)
{
return NUM;
}
strcpy (yylval->sym, token);
return SYM;
}
if (c == '/')
{
c = *sourcep++;;
if (c == '*')
{
for (;;)
{
while ((c = *sourcep++) != '*' && c != 0)
{
if (c == '\n')
SourceLine++;
}
if (c == 0)
return 0;
if ((c = *sourcep++) == '/')
goto loop;
if (c == 0)
return 0;
sourcep--;
}
}
else if (c == '/')
{
while ((c = *sourcep++) != '\n' && c != 0)
;
if (c == '\n')
SourceLine++;
else if (c == EOF)
return 0;
goto loop;
min = mid + 1;
}
else
{
sourcep--;
return DIVIDE;
max = mid - 1;
}
}
if (c == '"')
{
int tokensize = 0;
while ((c = *sourcep++) != '"' && c != 0)
{
yylval->string[tokensize++] = c;
}
yylval->string[tokensize] = 0;
return STRING;
}
if (c == '|')
{
c = *sourcep++;
if (c == '=')
return OR_EQUAL;
sourcep--;
return OR;
}
if (c == '<')
{
c = *sourcep++;
if (c == '<')
{
c = *sourcep++;
if (c == '=')
{
return LSHASSIGN;
}
sourcep--;
return 0;
}
c--;
return 0;
}
if (c == '>')
{
c = *sourcep++;
if (c == '>')
{
c = *sourcep++;
if (c == '=')
{
return RSHASSIGN;
}
sourcep--;
return 0;
}
c--;
return 0;
}
switch (c)
{
case '^': return XOR;
case '&': return AND;
case '-': return MINUS;
case '+': return PLUS;
case '*': return MULTIPLY;
case '(': return LPAREN;
case ')': return RPAREN;
case ',': return COMMA;
case '{': return LBRACE;
case '}': return RBRACE;
case '=': return EQUALS;
case ';': return SEMICOLON;
case ':': return COLON;
case '[': return LBRACKET;
case ']': return RBRACKET;
default: return 0;
}
return false;
}
int PrintError (const char *s)
{
if (SourceFile != NULL)
Printf ("%s, line %d: %s\n", SourceFile, SourceLine, s);
else
Printf ("%s\n", s);
return 0;
}
};
#include "xlat_parser.c"
//==========================================================================
//
//
//
//==========================================================================
void ParseXlatLump(const char *lumpname, void *pParser, XlatParseContext *context)
{
int tokentype;
int SavedSourceLine = context->SourceLine;
const char *SavedSourceFile = context->SourceFile;
XlatToken token;
int lumpno = Wads.CheckNumForFullName(lumpname, true);
if (lumpno == -1)
{
Printf ("%s, line %d: Lump '%s' not found\n", context->SourceFile, context->SourceLine, lumpname);
return;
}
// Read the lump into a buffer and add a 0-terminator
int lumplen = Wads.LumpLength(lumpno);
char *lumpdata = new char[lumplen+1];
Wads.ReadLump(lumpno, lumpdata);
lumpdata[lumplen] = 0;
context->SourceLine = 0;
context->SourceFile = lumpname;
char *sourcep = lumpdata;
while ( (tokentype = context->GetToken(sourcep, &token)) )
{
// It is much easier to handle include statements outside the main parser.
if (tokentype == INCLUDE)
{
if (context->GetToken(sourcep, &token) != STRING)
{
Printf("%s, line %d: Include: String parameter expected\n", context->SourceFile, context->SourceLine);
return;
}
ParseXlatLump(token.string, pParser, context);
}
else
{
XlatParse(pParser, tokentype, token, context);
}
}
delete [] lumpdata;
context->SourceLine = SavedSourceLine;
context->SourceFile = SavedSourceFile;
}
//==========================================================================
//
@ -476,10 +169,10 @@ void P_LoadTranslator(const char *lumpname)
void *pParser = XlatParseAlloc(malloc);
XlatParseContext context;
XlatParseContext context(pParser, XlatParse, TokenTrans);
ParseXlatLump(lumpname, pParser, &context);
XlatToken tok;
context.ParseLump(lumpname);
FParseToken tok;
tok.val=0;
XlatParse(pParser, 0, tok, &context);
XlatParseFree(pParser, free);