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wine/tools/widl/parser.l
Rob Shearman b7dd838136 widl: Remove the single keyword and type. 
It isn't valid in MIDL or the FreeDCE IDL compiler, nor does it appear
in the DCE/RPC or C99 specs.
2009-03-05 18:39:02 +01:00

483 lines
14 KiB
C
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/* -*-C-*-
* IDL Compiler
*
* Copyright 2002 Ove Kaaven
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
%option stack
%option noinput nounput noyy_top_state
%option 8bit never-interactive prefix="parser_"
nl \r?\n
ws [ \f\t\r]
cident [a-zA-Z_][0-9a-zA-Z_]*
u_suffix (u|U)
l_suffix (l|L)
int [0-9]+({l_suffix}?{u_suffix}?|{u_suffix}?{l_suffix}?)?
hexd [0-9a-fA-F]
hex 0(x|X){hexd}+({l_suffix}?{u_suffix}?|{u_suffix}?{l_suffix}?)?
uuid {hexd}{8}-{hexd}{4}-{hexd}{4}-{hexd}{4}-{hexd}{12}
double [0-9]+\.[0-9]+([eE][+-]?[0-9]+)*
%x QUOTE
%x WSTRQUOTE
%x ATTR
%x PP_LINE
%{
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <assert.h>
#include <errno.h>
#include <limits.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#else
#define YY_NO_UNISTD_H
#endif
#include "widl.h"
#include "utils.h"
#include "parser.h"
#include "wine/wpp.h"
#include "parser.tab.h"
extern char *temp_name;
static void addcchar(char c);
static char *get_buffered_cstring(void);
static char *cbuffer;
static int cbufidx;
static int cbufalloc = 0;
static int kw_token(const char *kw);
static int attr_token(const char *kw);
#define MAX_IMPORT_DEPTH 10
struct {
YY_BUFFER_STATE state;
char *input_name;
int line_number;
char *temp_name;
} import_stack[MAX_IMPORT_DEPTH];
int import_stack_ptr = 0;
/* converts an integer in string form to an unsigned long and prints an error
* on overflow */
static unsigned long xstrtoul(const char *nptr, char **endptr, int base)
{
unsigned long l;
errno = 0;
l = strtoul(nptr, endptr, base);
if (l == ULONG_MAX && errno == ERANGE)
error_loc("integer constant %s is too large\n", nptr);
return l;
}
UUID *parse_uuid(const char *u)
{
UUID* uuid = xmalloc(sizeof(UUID));
char b[3];
/* it would be nice to use UuidFromStringA */
uuid->Data1 = strtoul(u, NULL, 16);
uuid->Data2 = strtoul(u+9, NULL, 16);
uuid->Data3 = strtoul(u+14, NULL, 16);
b[2] = 0;
memcpy(b, u+19, 2); uuid->Data4[0] = strtoul(b, NULL, 16);
memcpy(b, u+21, 2); uuid->Data4[1] = strtoul(b, NULL, 16);
memcpy(b, u+24, 2); uuid->Data4[2] = strtoul(b, NULL, 16);
memcpy(b, u+26, 2); uuid->Data4[3] = strtoul(b, NULL, 16);
memcpy(b, u+28, 2); uuid->Data4[4] = strtoul(b, NULL, 16);
memcpy(b, u+30, 2); uuid->Data4[5] = strtoul(b, NULL, 16);
memcpy(b, u+32, 2); uuid->Data4[6] = strtoul(b, NULL, 16);
memcpy(b, u+34, 2); uuid->Data4[7] = strtoul(b, NULL, 16);
return uuid;
}
%}
/*
**************************************************************************
* The flexer starts here
**************************************************************************
*/
%%
<INITIAL,ATTR>^{ws}*\#{ws}* yy_push_state(PP_LINE);
<PP_LINE>[^\n]* {
int lineno;
char *cptr, *fname;
yy_pop_state();
lineno = (int)strtol(yytext, &cptr, 10);
if(!lineno)
error_loc("Malformed '#...' line-directive; invalid linenumber\n");
fname = strchr(cptr, '"');
if(!fname)
error_loc("Malformed '#...' line-directive; missing filename\n");
fname++;
cptr = strchr(fname, '"');
if(!cptr)
error_loc("Malformed '#...' line-directive; missing terminating \"\n");
*cptr = '\0';
line_number = lineno - 1; /* We didn't read the newline */
free( input_name );
input_name = xstrdup(fname);
}
<INITIAL,ATTR>\" yy_push_state(QUOTE); cbufidx = 0;
<QUOTE>\" {
yy_pop_state();
parser_lval.str = get_buffered_cstring();
return aSTRING;
}
<INITIAL,ATTR>L\" yy_push_state(WSTRQUOTE);
<WSTRQUOTE>\" {
yy_pop_state();
parser_lval.str = get_buffered_cstring();
return aWSTRING;
}
<QUOTE,WSTRQUOTE>\\\\ |
<QUOTE,WSTRQUOTE>\\\" addcchar(yytext[1]);
<QUOTE,WSTRQUOTE>\\. addcchar('\\'); addcchar(yytext[1]);
<QUOTE,WSTRQUOTE>. addcchar(yytext[0]);
<INITIAL,ATTR>\[ yy_push_state(ATTR); return '[';
<ATTR>\] yy_pop_state(); return ']';
<ATTR>{cident} return attr_token(yytext);
<ATTR>{uuid} {
parser_lval.uuid = parse_uuid(yytext);
return aUUID;
}
<INITIAL,ATTR>{hex} {
parser_lval.num = xstrtoul(yytext, NULL, 0);
return aHEXNUM;
}
<INITIAL,ATTR>{int} {
parser_lval.num = xstrtoul(yytext, NULL, 0);
return aNUM;
}
<INITIAL>{double} {
parser_lval.dbl = strtod(yytext, NULL);
return aDOUBLE;
}
SAFEARRAY{ws}*/\( return tSAFEARRAY;
{cident} return kw_token(yytext);
<INITIAL,ATTR>\n line_number++;
<INITIAL,ATTR>{ws}
<INITIAL,ATTR>\<\< return SHL;
<INITIAL,ATTR>\>\> return SHR;
<INITIAL,ATTR>\-\> return MEMBERPTR;
<INITIAL,ATTR>== return EQUALITY;
<INITIAL,ATTR>!= return INEQUALITY;
<INITIAL,ATTR>\>= return GREATEREQUAL;
<INITIAL,ATTR>\<= return LESSEQUAL;
<INITIAL,ATTR>\|\| return LOGICALOR;
<INITIAL,ATTR>&& return LOGICALAND;
<INITIAL,ATTR>. return yytext[0];
<<EOF>> {
if (import_stack_ptr)
return aEOF;
else yyterminate();
}
%%
#ifndef parser_wrap
int parser_wrap(void)
{
return 1;
}
#endif
struct keyword {
const char *kw;
int token;
};
/* This table MUST be alphabetically sorted on the kw field */
static const struct keyword keywords[] = {
{"FALSE", tFALSE},
{"NULL", tNULL},
{"TRUE", tTRUE},
{"__cdecl", tCDECL},
{"__fastcall", tFASTCALL},
{"__int64", tINT64},
{"__pascal", tPASCAL},
{"__stdcall", tSTDCALL},
{"_cdecl", tCDECL},
{"_fastcall", tFASTCALL},
{"_pascal", tPASCAL},
{"_stdcall", tSTDCALL},
{"boolean", tBOOLEAN},
{"byte", tBYTE},
{"case", tCASE},
{"cdecl", tCDECL},
{"char", tCHAR},
{"coclass", tCOCLASS},
{"const", tCONST},
{"cpp_quote", tCPPQUOTE},
{"default", tDEFAULT},
{"dispinterface", tDISPINTERFACE},
{"double", tDOUBLE},
{"enum", tENUM},
{"error_status_t", tERRORSTATUST},
{"extern", tEXTERN},
{"float", tFLOAT},
{"handle_t", tHANDLET},
{"hyper", tHYPER},
{"import", tIMPORT},
{"importlib", tIMPORTLIB},
{"inline", tINLINE},
{"int", tINT},
{"interface", tINTERFACE},
{"library", tLIBRARY},
{"long", tLONG},
{"methods", tMETHODS},
{"module", tMODULE},
{"pascal", tPASCAL},
{"properties", tPROPERTIES},
{"register", tREGISTER},
{"short", tSHORT},
{"signed", tSIGNED},
{"sizeof", tSIZEOF},
{"small", tSMALL},
{"static", tSTATIC},
{"stdcall", tSTDCALL},
{"struct", tSTRUCT},
{"switch", tSWITCH},
{"typedef", tTYPEDEF},
{"union", tUNION},
{"unsigned", tUNSIGNED},
{"void", tVOID},
{"wchar_t", tWCHAR},
};
#define NKEYWORDS (sizeof(keywords)/sizeof(keywords[0]))
/* keywords only recognized in attribute lists
* This table MUST be alphabetically sorted on the kw field
*/
static const struct keyword attr_keywords[] =
{
{"aggregatable", tAGGREGATABLE},
{"allocate", tALLOCATE},
{"appobject", tAPPOBJECT},
{"async", tASYNC},
{"async_uuid", tASYNCUUID},
{"auto_handle", tAUTOHANDLE},
{"bindable", tBINDABLE},
{"broadcast", tBROADCAST},
{"byte_count", tBYTECOUNT},
{"call_as", tCALLAS},
{"callback", tCALLBACK},
{"code", tCODE},
{"comm_status", tCOMMSTATUS},
{"context_handle", tCONTEXTHANDLE},
{"context_handle_noserialize", tCONTEXTHANDLENOSERIALIZE},
{"context_handle_serialize", tCONTEXTHANDLENOSERIALIZE},
{"control", tCONTROL},
{"defaultcollelem", tDEFAULTCOLLELEM},
{"defaultvalue", tDEFAULTVALUE},
{"defaultvtable", tDEFAULTVTABLE},
{"displaybind", tDISPLAYBIND},
{"dllname", tDLLNAME},
{"dual", tDUAL},
{"endpoint", tENDPOINT},
{"entry", tENTRY},
{"explicit_handle", tEXPLICITHANDLE},
{"handle", tHANDLE},
{"helpcontext", tHELPCONTEXT},
{"helpfile", tHELPFILE},
{"helpstring", tHELPSTRING},
{"helpstringcontext", tHELPSTRINGCONTEXT},
{"helpstringdll", tHELPSTRINGDLL},
{"hidden", tHIDDEN},
{"id", tID},
{"idempotent", tIDEMPOTENT},
{"iid_is", tIIDIS},
{"immediatebind", tIMMEDIATEBIND},
{"implicit_handle", tIMPLICITHANDLE},
{"in", tIN},
{"in_line", tIN_LINE},
{"input_sync", tINPUTSYNC},
{"lcid", tLCID},
{"length_is", tLENGTHIS},
{"local", tLOCAL},
{"nonbrowsable", tNONBROWSABLE},
{"noncreatable", tNONCREATABLE},
{"nonextensible", tNONEXTENSIBLE},
{"object", tOBJECT},
{"odl", tODL},
{"oleautomation", tOLEAUTOMATION},
{"optional", tOPTIONAL},
{"out", tOUT},
{"pointer_default", tPOINTERDEFAULT},
{"propget", tPROPGET},
{"propput", tPROPPUT},
{"propputref", tPROPPUTREF},
{"ptr", tPTR},
{"public", tPUBLIC},
{"range", tRANGE},
{"readonly", tREADONLY},
{"ref", tREF},
{"requestedit", tREQUESTEDIT},
{"restricted", tRESTRICTED},
{"retval", tRETVAL},
{"size_is", tSIZEIS},
{"source", tSOURCE},
{"strict_context_handle", tSTRICTCONTEXTHANDLE},
{"string", tSTRING},
{"switch_is", tSWITCHIS},
{"switch_type", tSWITCHTYPE},
{"transmit_as", tTRANSMITAS},
{"unique", tUNIQUE},
{"uuid", tUUID},
{"v1_enum", tV1ENUM},
{"vararg", tVARARG},
{"version", tVERSION},
{"wire_marshal", tWIREMARSHAL},
};
#define KWP(p) ((const struct keyword *)(p))
static int kw_cmp_func(const void *s1, const void *s2)
{
return strcmp(KWP(s1)->kw, KWP(s2)->kw);
}
static int kw_token(const char *kw)
{
struct keyword key, *kwp;
key.kw = kw;
kwp = bsearch(&key, keywords, NKEYWORDS, sizeof(keywords[0]), kw_cmp_func);
if (kwp) {
parser_lval.str = xstrdup(kwp->kw);
return kwp->token;
}
parser_lval.str = xstrdup(kw);
return is_type(kw) ? aKNOWNTYPE : aIDENTIFIER;
}
static int attr_token(const char *kw)
{
struct keyword key, *kwp;
key.kw = kw;
kwp = bsearch(&key, attr_keywords, sizeof(attr_keywords)/sizeof(attr_keywords[0]),
sizeof(attr_keywords[0]), kw_cmp_func);
if (kwp) {
parser_lval.str = xstrdup(kwp->kw);
return kwp->token;
}
return kw_token(kw);
}
static void addcchar(char c)
{
if(cbufidx >= cbufalloc)
{
cbufalloc += 1024;
cbuffer = xrealloc(cbuffer, cbufalloc * sizeof(cbuffer[0]));
if(cbufalloc > 65536)
parser_warning("Reallocating string buffer larger than 64kB\n");
}
cbuffer[cbufidx++] = c;
}
static char *get_buffered_cstring(void)
{
addcchar(0);
return xstrdup(cbuffer);
}
void pop_import(void)
{
int ptr = import_stack_ptr-1;
fclose(yyin);
yy_delete_buffer( YY_CURRENT_BUFFER );
yy_switch_to_buffer( import_stack[ptr].state );
if (temp_name) {
unlink(temp_name);
free(temp_name);
}
temp_name = import_stack[ptr].temp_name;
input_name = import_stack[ptr].input_name;
line_number = import_stack[ptr].line_number;
import_stack_ptr--;
}
struct imports {
char *name;
struct imports *next;
} *first_import;
int do_import(char *fname)
{
FILE *f;
char *path;
struct imports *import;
int ptr = import_stack_ptr;
int ret;
import = first_import;
while (import && strcmp(import->name, fname))
import = import->next;
if (import) return 0; /* already imported */
import = xmalloc(sizeof(struct imports));
import->name = xstrdup(fname);
import->next = first_import;
first_import = import;
/* don't search for a file name with a path in the include directories,
* for compatibility with MIDL */
if (strchr( fname, '/' ) || strchr( fname, '\\' ))
path = strdup( fname );
else if (!(path = wpp_find_include( fname, input_name )))
error_loc("Unable to open include file %s\n", fname);
import_stack[ptr].temp_name = temp_name;
import_stack[ptr].input_name = input_name;
import_stack[ptr].line_number = line_number;
import_stack_ptr++;
input_name = path;
line_number = 1;
ret = wpp_parse_temp( path, NULL, &temp_name );
if (ret) exit(1);
if((f = fopen(temp_name, "r")) == NULL)
error_loc("Unable to open %s\n", temp_name);
import_stack[ptr].state = YY_CURRENT_BUFFER;
yy_switch_to_buffer(yy_create_buffer(f, YY_BUF_SIZE));
return 1;
}
void abort_import(void)
{
int ptr;
for (ptr=0; ptr<import_stack_ptr; ptr++)
unlink(import_stack[ptr].temp_name);
}
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