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wine/tools/widl/parser.l
Bernhard Kölbl 64d5feb4ce widl: Add support for the [overload] attribute. 
The attribute is used by WinRT and doesn't have any
effect on the generated headers.

Signed-off-by: Bernhard Kölbl <besentv@gmail.com>
Signed-off-by: Rémi Bernon <rbernon@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
2022-01-25 20:50:49 +01:00

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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
%x PP_PRAGMA
%x SQUOTE
%{
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <assert.h>
#include <errno.h>
#include <limits.h>
#define YY_NO_UNISTD_H
#include "widl.h"
#include "utils.h"
#include "parser.h"
#include "wpp_private.h"
#include "parser.tab.h"
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);
static void switch_to_acf(void);
static warning_list_t *disabled_warnings = NULL;
#define MAX_IMPORT_DEPTH 20
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 int xstrtoul(const char *nptr, char **endptr, int base)
{
unsigned long val;
errno = 0;
val = strtoul(nptr, endptr, base);
if ((val == ULONG_MAX && errno == ERANGE) || ((unsigned int)val != val))
error_loc("integer constant %s is too large\n", nptr);
return val;
}
struct uuid *parse_uuid(const char *u)
{
struct 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>^{ws}*\#{ws}*pragma{ws}+ yy_push_state(PP_PRAGMA);
<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 */
input_name = xstrdup(fname);
}
<PP_PRAGMA>midl_echo[^\n]* yyless(9); yy_pop_state(); return tCPPQUOTE;
<PP_PRAGMA>winrt[^\n]* {
if(import_stack_ptr) {
if(!winrt_mode)
error_loc("winrt IDL file imported in non-winrt mode\n");
}else {
const char *ptr = yytext+5;
winrt_mode = TRUE;
while(isspace(*ptr))
ptr++;
if(!strncmp(ptr, "ns_prefix", 9) && (!*(ptr += 9) || isspace(*ptr)))
use_abi_namespace = TRUE;
}
yy_pop_state();
}
<PP_PRAGMA>[^\n]* parser_lval.str = xstrdup(yytext); yy_pop_state(); return aPRAGMA;
<INITIAL>^{ws}*midl_pragma{ws}+warning return tPRAGMA_WARNING;
<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); cbufidx = 0;
<WSTRQUOTE>\" {
yy_pop_state();
parser_lval.str = get_buffered_cstring();
return aWSTRING;
}
<INITIAL,ATTR>\' yy_push_state(SQUOTE); cbufidx = 0;
<SQUOTE>\' {
yy_pop_state();
parser_lval.str = get_buffered_cstring();
return aSQSTRING;
}
<QUOTE,WSTRQUOTE,SQUOTE>\\\\ |
<QUOTE,WSTRQUOTE>\\\" addcchar(yytext[1]);
<SQUOTE>\\\' addcchar(yytext[1]);
<QUOTE,WSTRQUOTE,SQUOTE>\\. addcchar('\\'); addcchar(yytext[1]);
<QUOTE,WSTRQUOTE,SQUOTE>. 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 ELLIPSIS;
<INITIAL,ATTR>. return yytext[0];
<<EOF>> {
if (import_stack_ptr)
return aEOF;
if (acf_name)
{
switch_to_acf();
return aACF;
}
yyterminate();
}
%%
#ifndef parser_wrap
int parser_wrap(void)
{
return 1;
}
#endif
struct keyword {
const char *kw;
int token;
int winrt_only : 1;
};
/* This table MUST be alphabetically sorted on the kw field */
static const struct keyword keywords[] = {
{"FALSE", tFALSE, 0},
{"NULL", tNULL, 0},
{"TRUE", tTRUE, 0},
{"__cdecl", tCDECL, 0},
{"__fastcall", tFASTCALL, 0},
{"__int32", tINT32, 0},
{"__int3264", tINT3264, 0},
{"__int64", tINT64, 0},
{"__pascal", tPASCAL, 0},
{"__stdcall", tSTDCALL, 0},
{"_cdecl", tCDECL, 0},
{"_fastcall", tFASTCALL, 0},
{"_pascal", tPASCAL, 0},
{"_stdcall", tSTDCALL, 0},
{"apicontract", tAPICONTRACT, 1},
{"boolean", tBOOLEAN, 0},
{"byte", tBYTE, 0},
{"case", tCASE, 0},
{"cdecl", tCDECL, 0},
{"char", tCHAR, 0},
{"coclass", tCOCLASS, 0},
{"const", tCONST, 0},
{"cpp_quote", tCPPQUOTE, 0},
{"declare", tDECLARE, 1},
{"default", tDEFAULT, 0},
{"delegate", tDELEGATE, 1},
{"dispinterface", tDISPINTERFACE, 0},
{"double", tDOUBLE, 0},
{"enum", tENUM, 0},
{"error_status_t", tERRORSTATUST, 0},
{"extern", tEXTERN, 0},
{"float", tFLOAT, 0},
{"handle_t", tHANDLET, 0},
{"hyper", tHYPER, 0},
{"import", tIMPORT, 0},
{"importlib", tIMPORTLIB, 0},
{"inline", tINLINE, 0},
{"int", tINT, 0},
{"interface", tINTERFACE, 0},
{"library", tLIBRARY, 0},
{"long", tLONG, 0},
{"methods", tMETHODS, 0},
{"module", tMODULE, 0},
{"namespace", tNAMESPACE, 1},
{"pascal", tPASCAL, 0},
{"properties", tPROPERTIES, 0},
{"register", tREGISTER, 0},
{"requires", tREQUIRES, 1},
{"runtimeclass", tRUNTIMECLASS, 1},
{"short", tSHORT, 0},
{"signed", tSIGNED, 0},
{"sizeof", tSIZEOF, 0},
{"small", tSMALL, 0},
{"static", tSTATIC, 0},
{"stdcall", tSTDCALL, 0},
{"struct", tSTRUCT, 0},
{"switch", tSWITCH, 0},
{"typedef", tTYPEDEF, 0},
{"union", tUNION, 0},
{"unsigned", tUNSIGNED, 0},
{"void", tVOID, 0},
{"wchar_t", tWCHAR, 0},
};
#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[] =
{
{"activatable", tACTIVATABLE, 1},
{"aggregatable", tAGGREGATABLE, 0},
{"agile", tAGILE, 1},
{"all_nodes", tALLNODES, 0},
{"allocate", tALLOCATE, 0},
{"annotation", tANNOTATION, 0},
{"apartment", tAPARTMENT, 0},
{"appobject", tAPPOBJECT, 0},
{"async", tASYNC, 0},
{"async_uuid", tASYNCUUID, 0},
{"auto_handle", tAUTOHANDLE, 0},
{"bindable", tBINDABLE, 0},
{"both", tBOTH, 0},
{"broadcast", tBROADCAST, 0},
{"byte_count", tBYTECOUNT, 0},
{"call_as", tCALLAS, 0},
{"callback", tCALLBACK, 0},
{"code", tCODE, 0},
{"comm_status", tCOMMSTATUS, 0},
{"context_handle", tCONTEXTHANDLE, 0},
{"context_handle_noserialize", tCONTEXTHANDLENOSERIALIZE, 0},
{"context_handle_serialize", tCONTEXTHANDLENOSERIALIZE, 0},
{"contract", tCONTRACT, 1},
{"contractversion", tCONTRACTVERSION, 1},
{"control", tCONTROL, 0},
{"custom", tCUSTOM, 0},
{"decode", tDECODE, 0},
{"defaultbind", tDEFAULTBIND, 0},
{"defaultcollelem", tDEFAULTCOLLELEM, 0},
{"defaultvalue", tDEFAULTVALUE, 0},
{"defaultvtable", tDEFAULTVTABLE, 0},
{"disable_consistency_check", tDISABLECONSISTENCYCHECK, 0},
{"displaybind", tDISPLAYBIND, 0},
{"dllname", tDLLNAME, 0},
{"dont_free", tDONTFREE, 0},
{"dual", tDUAL, 0},
{"enable_allocate", tENABLEALLOCATE, 0},
{"encode", tENCODE, 0},
{"endpoint", tENDPOINT, 0},
{"entry", tENTRY, 0},
{"eventadd", tEVENTADD, 1},
{"eventremove", tEVENTREMOVE, 1},
{"exclusiveto", tEXCLUSIVETO, 1},
{"explicit_handle", tEXPLICITHANDLE, 0},
{"fault_status", tFAULTSTATUS, 0},
{"flags", tFLAGS, 1},
{"force_allocate", tFORCEALLOCATE, 0},
{"free", tFREE, 0},
{"handle", tHANDLE, 0},
{"helpcontext", tHELPCONTEXT, 0},
{"helpfile", tHELPFILE, 0},
{"helpstring", tHELPSTRING, 0},
{"helpstringcontext", tHELPSTRINGCONTEXT, 0},
{"helpstringdll", tHELPSTRINGDLL, 0},
{"hidden", tHIDDEN, 0},
{"id", tID, 0},
{"idempotent", tIDEMPOTENT, 0},
{"ignore", tIGNORE, 0},
{"iid_is", tIIDIS, 0},
{"immediatebind", tIMMEDIATEBIND, 0},
{"implicit_handle", tIMPLICITHANDLE, 0},
{"in", tIN, 0},
{"in_line", tIN_LINE, 0},
{"input_sync", tINPUTSYNC, 0},
{"lcid", tLCID, 0},
{"length_is", tLENGTHIS, 0},
{"licensed", tLICENSED, 0},
{"local", tLOCAL, 0},
{"marshaling_behavior", tMARSHALINGBEHAVIOR, 1},
{"maybe", tMAYBE, 0},
{"message", tMESSAGE, 0},
{"mta" , tMTA, 0},
{"neutral", tNEUTRAL, 0},
{"nocode", tNOCODE, 0},
{"nonbrowsable", tNONBROWSABLE, 0},
{"noncreatable", tNONCREATABLE, 0},
{"none", tNONE, 1},
{"nonextensible", tNONEXTENSIBLE, 0},
{"notify", tNOTIFY, 0},
{"notify_flag", tNOTIFYFLAG, 0},
{"object", tOBJECT, 0},
{"odl", tODL, 0},
{"oleautomation", tOLEAUTOMATION, 0},
{"optimize", tOPTIMIZE, 0},
{"optional", tOPTIONAL, 0},
{"out", tOUT, 0},
{"overload", tOVERLOAD, 0},
{"partial_ignore", tPARTIALIGNORE, 0},
{"pointer_default", tPOINTERDEFAULT, 0},
{"progid", tPROGID, 0},
{"propget", tPROPGET, 0},
{"propput", tPROPPUT, 0},
{"propputref", tPROPPUTREF, 0},
{"proxy", tPROXY, 0},
{"ptr", tPTR, 0},
{"public", tPUBLIC, 0},
{"range", tRANGE, 0},
{"readonly", tREADONLY, 0},
{"ref", tREF, 0},
{"represent_as", tREPRESENTAS, 0},
{"requestedit", tREQUESTEDIT, 0},
{"restricted", tRESTRICTED, 0},
{"retval", tRETVAL, 0},
{"single", tSINGLE, 0},
{"single_node", tSINGLENODE, 0},
{"size_is", tSIZEIS, 0},
{"source", tSOURCE, 0},
{"standard", tSTANDARD, 1},
{"static", tSTATIC, 1},
{"strict_context_handle", tSTRICTCONTEXTHANDLE, 0},
{"string", tSTRING, 0},
{"switch_is", tSWITCHIS, 0},
{"switch_type", tSWITCHTYPE, 0},
{"threading", tTHREADING, 0},
{"transmit_as", tTRANSMITAS, 0},
{"uidefault", tUIDEFAULT, 0},
{"unique", tUNIQUE, 0},
{"user_marshal", tUSERMARSHAL, 0},
{"usesgetlasterror", tUSESGETLASTERROR, 0},
{"uuid", tUUID, 0},
{"v1_enum", tV1ENUM, 0},
{"vararg", tVARARG, 0},
{"version", tVERSION, 0},
{"vi_progid", tVIPROGID, 0},
{"wire_marshal", tWIREMARSHAL, 0},
};
/* attributes TODO:
first_is
last_is
max_is
min_is
*/
#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 && (!kwp->winrt_only || winrt_mode)) {
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 && (!kwp->winrt_only || winrt_mode)) {
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, *name;
struct imports *import;
int ptr = import_stack_ptr;
int ret, fd;
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 = xstrdup( fname );
else if (!(path = wpp_find_include( fname, input_name )))
error_loc("Unable to open include file %s\n", fname);
if (import_stack_ptr == MAX_IMPORT_DEPTH)
error_loc("Exceeded max import depth\n");
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;
fd = make_temp_file( "widl-pp", NULL, &name );
temp_name = name;
if (!(f = fdopen(fd, "wt")))
error("Could not open fd %s for writing\n", name);
ret = wpp_parse( path, f );
fclose( f );
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);
}
static void switch_to_acf(void)
{
int ptr = import_stack_ptr;
int ret, fd;
char *name;
FILE *f;
assert(import_stack_ptr == 0);
input_name = acf_name;
acf_name = NULL;
line_number = 1;
fd = make_temp_file( "widl-acf", NULL, &name );
temp_name = name;
if (!(f = fdopen(fd, "wt")))
error("Could not open fd %s for writing\n", name);
ret = wpp_parse(input_name, f);
fclose(f);
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));
}
static void warning_disable(int warning)
{
warning_t *warning_entry;
LIST_FOR_EACH_ENTRY(warning_entry, disabled_warnings, warning_t, entry)
if(warning_entry->num == warning)
return;
warning_entry = xmalloc( sizeof(*warning_entry) );
warning_entry->num = warning;
list_add_tail(disabled_warnings, &warning_entry->entry);
}
static void warning_enable(int warning)
{
warning_t *warning_entry;
LIST_FOR_EACH_ENTRY(warning_entry, disabled_warnings, warning_t, entry)
if(warning_entry->num == warning)
{
list_remove(&warning_entry->entry);
free(warning_entry);
break;
}
}
int do_warning(const char *toggle, warning_list_t *wnum)
{
warning_t *warning, *next;
int ret = 1;
if(!disabled_warnings)
{
disabled_warnings = xmalloc( sizeof(*disabled_warnings) );
list_init( disabled_warnings );
}
if(!strcmp(toggle, "disable"))
LIST_FOR_EACH_ENTRY(warning, wnum, warning_t, entry)
warning_disable(warning->num);
else if(!strcmp(toggle, "enable") || !strcmp(toggle, "default"))
LIST_FOR_EACH_ENTRY(warning, wnum, warning_t, entry)
warning_enable(warning->num);
else
ret = 0;
LIST_FOR_EACH_ENTRY_SAFE(warning, next, wnum, warning_t, entry)
free(warning);
return ret;
}
int is_warning_enabled(int warning)
{
warning_t *warning_entry;
if(!disabled_warnings)
return 1;
LIST_FOR_EACH_ENTRY(warning_entry, disabled_warnings, warning_t, entry)
if(warning_entry->num == warning)
return 0;
return 1;
}
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