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Sweden-Number/tools/widl/parser.l

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/*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
%option stack
%option never-interactive
nl \r?\n
ws [ \f\t\r]
cident [a-zA-Z_][0-9a-zA-Z_]*
int [0-9]+
hexd [0-9a-fA-F]
hex 0x{hexd}+
uuid {hexd}{8}-{hexd}{4}-{hexd}{4}-{hexd}{4}-{hexd}{12}
%x QUOTE
%x pp_line
%{
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <assert.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include "widl.h"
#include "utils.h"
#include "parser.h"
#include "wine/wpp.h"
#include "y.tab.h"
#define YY_USE_PROTOS
#define YY_NO_UNPUT
#define YY_NO_TOP_STATE
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);
#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;
static void pop_import(void);
static 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>^{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)
yyerror("Malformed '#...' line-directive; invalid linenumber");
fname = strchr(cptr, '"');
if(!fname)
yyerror("Malformed '#...' line-directive; missing filename");
fname++;
cptr = strchr(fname, '"');
if(!cptr)
yyerror("Malformed '#...' line-directive; missing terminating \"");
*cptr = '\0';
line_number = lineno - 1; /* We didn't read the newline */
free( input_name );
input_name = xstrdup(fname);
}
\" yy_push_state(QUOTE); cbufidx = 0;
<QUOTE>\" {
yy_pop_state();
yylval.str = get_buffered_cstring();
return aSTRING;
}
<QUOTE>\\\\ |
<QUOTE>\\\" addcchar(yytext[1]);
<QUOTE>\\. addcchar('\\'); addcchar(yytext[1]);
<QUOTE>. addcchar(yytext[0]);
{uuid} {
yylval.uuid = parse_uuid(yytext);
return aUUID;
}
{hex} {
yylval.num = strtoul(yytext, NULL, 0);
return aHEXNUM;
}
{int} {
yylval.num = strtoul(yytext, NULL, 0);
return aNUM;
}
{cident} return kw_token(yytext);
\n line_number++;
{ws}
\<\< return SHL;
\>\> return SHR;
. return yytext[0];
<<EOF>> {
if (import_stack_ptr) {
pop_import();
return aEOF;
}
else yyterminate();
}
%%
#ifndef yywrap
int yywrap(void)
{
return 1;
}
#endif
static struct keyword {
const char *kw;
int token;
int val;
} keywords[] = {
{"__cdecl", tCDECL},
{"__int64", tINT64},
{"__stdcall", tSTDCALL},
{"_stdcall", tSTDCALL},
{"aggregatable", tAGGREGATABLE},
{"allocate", tALLOCATE},
{"appobject", tAPPOBJECT},
{"arrays", tARRAYS},
{"async", tASYNC},
{"async_uuid", tASYNCUUID},
{"auto_handle", tAUTOHANDLE},
{"bindable", tBINDABLE},
{"boolean", tBOOLEAN},
{"broadcast", tBROADCAST},
{"byte", tBYTE},
{"byte_count", tBYTECOUNT},
{"call_as", tCALLAS},
{"callback", tCALLBACK},
{"case", tCASE},
{"char", tCHAR},
{"coclass", tCOCLASS},
{"code", tCODE},
{"comm_status", tCOMMSTATUS},
{"const", tCONST},
{"context_handle", tCONTEXTHANDLE},
{"context_handle_noserialize", tCONTEXTHANDLENOSERIALIZE},
{"context_handle_serialize", tCONTEXTHANDLENOSERIALIZE},
{"control", tCONTROL},
{"cpp_quote", tCPPQUOTE},
/* ... */
{"default", tDEFAULT},
{"defaultvalue", tDEFAULTVALUE},
/* ... */
{"dispinterface", tDISPINTERFACE},
/* ... */
{"dllname", tDLLNAME},
{"double", tDOUBLE},
{"dual", tDUAL},
/* ... */
{"endpoint", tENDPOINT},
{"entry", tENTRY},
{"enum", tENUM},
{"error_status_t", tERRORSTATUST},
/* ... */
{"extern", tEXTERN},
/* ... */
{"float", tFLOAT},
/* ... */
{"handle", tHANDLE},
{"handle_t", tHANDLET},
/* ... */
{"helpcontext", tHELPCONTEXT},
{"helpfile", tHELPFILE},
{"helpstring", tHELPSTRING},
{"helpstringcontext", tHELPSTRINGCONTEXT},
{"helpstringdll", tHELPSTRINGDLL},
/* ... */
{"hidden", tHIDDEN},
{"hyper", tHYPER},
{"id", tID},
{"idempotent", tIDEMPOTENT},
/* ... */
{"iid_is", tIIDIS},
/* ... */
{"import", tIMPORT},
{"importlib", tIMPORTLIB},
{"in", tIN},
{"include", tINCLUDE},
{"in_line", tINLINE},
{"input_sync", tINPUTSYNC},
{"int", tINT},
/* ... */
{"interface", tINTERFACE},
/* ... */
{"length_is", tLENGTHIS},
{"library", tLIBRARY},
/* ... */
{"local", tLOCAL},
{"long", tLONG},
/* ... */
{"methods", tMETHODS},
/* ... */
{"module", tMODULE},
/* ... */
{"object", tOBJECT},
{"odl", tODL},
{"oleautomation", tOLEAUTOMATION},
/* ... */
{"optional", tOPTIONAL},
{"out", tOUT},
/* ... */
{"pointer_default", tPOINTERDEFAULT},
/* ... */
{"properties", tPROPERTIES},
{"propget", tPROPGET},
{"propput", tPROPPUT},
/* ... */
{"public", tPUBLIC},
/* ... */
{"readonly", tREADONLY},
{"ref", tREF},
/* ... */
{"restricted", tRESTRICTED},
{"retval", tRETVAL},
/* ... */
{"short", tSHORT},
{"signed", tSIGNED},
{"size_is", tSIZEIS},
{"sizeof", tSIZEOF},
/* ... */
{"source", tSOURCE},
/* ... */
{"string", tSTRING},
{"struct", tSTRUCT},
{"switch", tSWITCH},
{"switch_is", tSWITCHIS},
{"switch_type", tSWITCHTYPE},
/* ... */
{"transmit_as", tTRANSMITAS},
{"typedef", tTYPEDEF},
{"union", tUNION},
/* ... */
{"unique", tUNIQUE},
{"unsigned", tUNSIGNED},
/* ... */
{"uuid", tUUID},
{"v1_enum", tV1ENUM},
/* ... */
{"vararg", tVARARG},
{"version", tVERSION},
{"void", tVOID},
{"wchar_t", tWCHAR},
{"wire_marshal", tWIREMARSHAL}
};
#define NKEYWORDS (sizeof(keywords)/sizeof(keywords[0]))
#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);
}
#define KW_BSEARCH
static int kw_token(const char *kw)
{
struct keyword key, *kwp;
key.kw = kw;
#ifdef KW_BSEARCH
kwp = bsearch(&key, keywords, NKEYWORDS, sizeof(keywords[0]), kw_cmp_func);
#else
{
int i;
for (kwp=NULL, i=0; i < NKEYWORDS; i++)
if (!kw_cmp_func(&key, &keywords[i])) {
kwp = &keywords[i];
break;
}
}
#endif
if (kwp) {
yylval.str = (char*)kwp->kw;
return kwp->token;
}
yylval.str = xstrdup(kw);
return is_type(kw) ? aKNOWNTYPE : aIDENTIFIER;
}
static void addcchar(char c)
{
if(cbufidx >= cbufalloc)
{
cbufalloc += 1024;
cbuffer = xrealloc(cbuffer, cbufalloc * sizeof(cbuffer[0]));
if(cbufalloc > 65536)
yywarning("Reallocating string buffer larger than 64kB");
}
cbuffer[cbufidx++] = c;
}
static char *get_buffered_cstring(void)
{
addcchar(0);
return xstrdup(cbuffer);
}
static 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;
free( input_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 *hname, *path, *p;
struct imports *import;
int ptr = import_stack_ptr;
int ret;
if (!parse_only) {
hname = dup_basename(fname, ".idl");
p = hname + strlen(hname) - 2;
if (p <= hname || strcmp( p, ".h" )) strcat(hname, ".h");
fprintf(header, "#include <%s>\n", hname);
free(hname);
}
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;
if (!(path = wpp_find_include( fname, 1 )))
yyerror("Unable to open include file %s", 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)
yyerror("Unable to open %s", 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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