Sweden-Number/tools/widl/parser.y

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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
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <assert.h>
#include <ctype.h>
#include <string.h>
#ifdef HAVE_ALLOCA_H
#include <alloca.h>
#endif
#include "widl.h"
#include "utils.h"
#include "parser.h"
#include "header.h"
#if defined(YYBYACC)
/* Berkeley yacc (byacc) doesn't seem to know about these */
/* Some *BSD supplied versions do define these though */
# ifndef YYEMPTY
# define YYEMPTY (-1) /* Empty lookahead value of yychar */
# endif
# ifndef YYLEX
# define YYLEX yylex()
# endif
#elif defined(YYBISON)
/* Bison was used for original development */
/* #define YYEMPTY -2 */
/* #define YYLEX yylex() */
#else
/* No yacc we know yet */
# if !defined(YYEMPTY) || !defined(YYLEX)
# error Yacc version/type unknown. This version needs to be verified for settings of YYEMPTY and YYLEX.
# elif defined(__GNUC__) /* gcc defines the #warning directive */
# warning Yacc version/type unknown. It defines YYEMPTY and YYLEX, but is not tested
/* #else we just take a chance that it works... */
# endif
#endif
static attr_t *make_attr(enum attr_type type);
static attr_t *make_attrv(enum attr_type type, DWORD val);
static attr_t *make_attrp(enum attr_type type, void *val);
static type_t *make_type(BYTE type, type_t *ref);
static typeref_t *make_tref(char *name, type_t *ref);
static typeref_t *uniq_tref(typeref_t *ref);
static type_t *type_ref(typeref_t *ref);
static void set_type(var_t *v, typeref_t *ref);
static var_t *make_var(char *name);
static func_t *make_func(var_t *def, var_t *args);
static type_t *reg_type(type_t *type, char *name, int t);
static type_t *reg_types(type_t *type, var_t *names, int t);
static type_t *find_type(char *name, int t);
static type_t *find_type2(char *name, int t);
static type_t *get_type(BYTE type, char *name, int t);
static type_t *get_typev(BYTE type, var_t *name, int t);
#define tsENUM 1
#define tsSTRUCT 2
#define tsUNION 3
static type_t std_int = { "int" };
%}
%union {
attr_t *attr;
type_t *type;
typeref_t *tref;
var_t *var;
func_t *func;
char *str;
int num;
}
%token <str> aIDENTIFIER
%token <str> aKNOWNTYPE
%token <num> aNUM
%token <str> aSTRING
%token <uuid> aUUID
%token SHL SHR
%token tAGGREGATABLE tALLOCATE tAPPOBJECT tARRAYS tASYNC tASYNCUUID
%token tAUTOHANDLE tBINDABLE tBOOLEAN tBROADCAST tBYTE tBYTECOUNT
%token tCALLAS tCALLBACK tCASE tCDECL tCHAR tCOCLASS tCODE tCOMMSTATUS
%token tCONST tCONTEXTHANDLE tCONTEXTHANDLENOSERIALIZE
%token tCONTEXTHANDLESERIALIZE tCONTROL tCPPQUOTE
%token tDEFAULT
%token tDOUBLE
%token tENUM
%token tEXTERN
%token tFLOAT
%token tHYPER
%token tIIDIS
%token tIMPORT tIMPORTLIB
%token tIN tINCLUDE tINLINE
%token tINT tINT64
%token tINTERFACE
%token tLENGTHIS
%token tLOCAL
%token tLONG
%token tOBJECT tODL tOLEAUTOMATION
%token tOUT
%token tPOINTERDEFAULT
%token tREF
%token tSHORT
%token tSIGNED
%token tSIZEIS tSIZEOF
%token tSTDCALL
%token tSTRING tSTRUCT
%token tSWITCH tSWITCHIS tSWITCHTYPE
%token tTYPEDEF
%token tUNION
%token tUNIQUE
%token tUNSIGNED
%token tUUID
%token tV1ENUM
%token tVERSION
%token tVOID
%token tWCHAR tWIREMARSHAL
/* used in attr_t */
%token tPOINTERTYPE
%type <attr> m_attributes attributes attrib_list attribute
%type <type> inherit interface interfacedef
%type <type> base_type int_std
%type <type> enumdef structdef typedef uniondef
%type <tref> type
%type <var> m_args no_args args arg
%type <var> fields field
%type <var> m_ident t_ident ident p_ident pident pident_list
%type <func> funcdef statements
%type <num> expr pointer_type
%left ','
%left '|'
%left '&'
%left '-' '+'
%left '*' '/'
%left SHL SHR
%right CAST
%right PPTR
%right NEG
%%
statements: { $$ = NULL; }
| statements funcdef ';' { LINK($2, $1); $$ = $2; }
| statements statement
;
statement: ';' {}
| constdef {}
| cppquote {}
| enumdef ';' { if (!parse_only) { write_type(header, $1, NULL, NULL); fprintf(header, ";\n"); } }
| externdef ';' {}
| import {}
| interface ';' {}
| interfacedef {}
| structdef ';' { if (!parse_only) { write_type(header, $1, NULL, NULL); fprintf(header, ";\n"); } }
| typedef ';' {}
| uniondef ';' { if (!parse_only) { write_type(header, $1, NULL, NULL); fprintf(header, ";\n"); } }
;
cppquote: tCPPQUOTE '(' aSTRING ')' { if (!parse_only) fprintf(header, "%s\n", $3); }
;
import: tIMPORT aSTRING ';' { do_import($2); }
;
m_args: { $$ = NULL; }
| args
;
no_args: tVOID { $$ = NULL; }
;
args: arg
| args ',' arg { LINK($3, $1); $$ = $3; }
| no_args
;
/* split into two rules to get bison to resolve a tVOID conflict */
arg: attributes type pident array { $$ = $3;
set_type($$, $2);
$$->attrs = $1; /* FIXME: array */
}
| type pident array { $$ = $2;
set_type($$, $1); /* FIXME: array */
}
;
aexprs:
| aexpr_list
;
aexpr_list: aexpr
| aexprs ',' aexpr
;
aexpr: aNUM {}
| aIDENTIFIER {}
| aexpr '|' aexpr
| aexpr '&' aexpr
| aexpr '+' aexpr
| aexpr '-' aexpr
| aexpr '*' aexpr
| aexpr '/' aexpr
| '-' aexpr %prec NEG
| '*' aexpr %prec PPTR
| '(' type ')' aexpr %prec CAST
| '(' aexpr ')'
| tSIZEOF '(' type ')'
;
array:
| '[' aexprs ']'
| '[' '*' ']'
;
m_attributes: { $$ = NULL; }
| attributes
;
attributes:
m_attributes '[' attrib_list ']' { LINK_LAST($3, $1); $$ = $3; }
;
attrib_list: attribute
| attrib_list ',' attribute { LINK_SAFE($3, $1); $$ = $3; /* FIXME: don't use SAFE */ }
;
attribute:
tASYNC { $$ = make_attr(ATTR_ASYNC); }
| tCALLAS '(' ident ')' { $$ = make_attrp(ATTR_CALLAS, $3); }
| tCASE '(' expr_list ')' { $$ = NULL; }
| tCONTEXTHANDLE { $$ = NULL; }
| tCONTEXTHANDLENOSERIALIZE { $$ = NULL; }
| tCONTEXTHANDLESERIALIZE { $$ = NULL; }
| tDEFAULT { $$ = make_attr(ATTR_DEFAULT); }
| tIIDIS '(' ident ')' { $$ = make_attrp(ATTR_IIDIS, $3); }
| tIN { $$ = make_attr(ATTR_IN); }
| tLENGTHIS '(' aexprs ')' { $$ = NULL; }
| tLOCAL { $$ = make_attr(ATTR_LOCAL); }
| tOBJECT { $$ = make_attr(ATTR_OBJECT); }
| tOLEAUTOMATION { $$ = make_attr(ATTR_OLEAUTOMATION); }
| tOUT { $$ = make_attr(ATTR_OUT); }
| tPOINTERDEFAULT '(' pointer_type ')' { $$ = make_attrv(ATTR_POINTERDEFAULT, $3); }
| tSIZEIS '(' aexprs ')' { $$ = NULL; }
| tSTRING { $$ = make_attr(ATTR_STRING); }
| tSWITCHIS '(' aexpr ')' { $$ = NULL; }
| tSWITCHTYPE '(' type ')' { $$ = NULL; }
| tUUID '(' aUUID ')' { $$ = NULL; }
| tV1ENUM { $$ = make_attr(ATTR_V1ENUM); }
| tVERSION '(' version ')' { $$ = NULL; }
| tWIREMARSHAL '(' type ')' { $$ = make_attrp(ATTR_WIREMARSHAL, type_ref($3)); }
| pointer_type { $$ = make_attrv(ATTR_POINTERTYPE, $1); }
;
callconv:
| tSTDCALL
;
cases:
| cases case
;
case: tCASE expr ':' field
| tDEFAULT ':' field
;
constdef: tCONST type ident '=' expr
;
enums:
| enum_list ','
| enum_list
;
enum_list: enum
| enum_list ',' enum
;
enum: ident '=' expr {}
| ident {}
;
enumdef: tENUM t_ident '{' enums '}' { $$ = get_typev(RPC_FC_SHORT /* FIXME */, $2, tsENUM);
$$->defined = TRUE;
}
;
expr_list: expr {}
| expr_list ',' expr {}
;
expr: aNUM
| aIDENTIFIER {}
| expr '|' expr {}
| expr SHL expr {}
| expr SHR expr {}
| '-' expr %prec NEG {}
;
externdef: tEXTERN tCONST type ident
;
fields: { $$ = NULL; }
| fields field { LINK($2, $1); $$ = $2; }
;
field: m_attributes type pident array ';' { $$ = $3; set_type($$, $2); $$->attrs = $1; /* FIXME: array */ }
| m_attributes uniondef ';' { $$ = make_var(NULL); $$->type = $2; $$->attrs = $1; }
| attributes ';' { $$ = make_var(NULL); $$->attrs = $1; }
| ';' { $$ = NULL; }
;
funcdef:
m_attributes type callconv pident
'(' m_args ')' { set_type($4, $2);
$4->attrs = $1;
$$ = make_func($4, $6);
}
;
m_ident: { $$ = NULL; }
| ident
;
t_ident: { $$ = NULL; }
| aIDENTIFIER { $$ = make_var($1); }
| aKNOWNTYPE { $$ = make_var($1); }
;
ident: aIDENTIFIER { $$ = make_var($1); }
;
base_type: tBYTE { $$ = make_type(RPC_FC_BYTE, NULL); }
| tCHAR { $$ = make_type(RPC_FC_CHAR, NULL); }
| tUNSIGNED tCHAR { $$ = make_type(RPC_FC_CHAR, NULL); }
| tWCHAR { $$ = make_type(RPC_FC_WCHAR, NULL); }
| int_std
| tSIGNED int_std { $$ = $2; /* FIXME */ }
| tUNSIGNED int_std { $$ = $2; /* FIXME */ }
| tFLOAT { $$ = make_type(RPC_FC_FLOAT, NULL); }
| tDOUBLE { $$ = make_type(RPC_FC_DOUBLE, NULL); }
| tBOOLEAN { $$ = make_type(RPC_FC_BYTE, NULL); /* ? */ }
;
m_int:
| tINT
;
int_std: tINT { $$ = make_type(RPC_FC_LONG, &std_int); } /* win32 only */
| tSHORT m_int { $$ = make_type(RPC_FC_SHORT, NULL); }
| tLONG m_int { $$ = make_type(RPC_FC_LONG, NULL); }
| tHYPER m_int { $$ = make_type(RPC_FC_HYPER, NULL); }
| tINT64 { $$ = make_type(RPC_FC_HYPER, NULL); }
;
inherit: { $$ = NULL; }
| ':' aKNOWNTYPE { $$ = find_type2($2, 0); }
;
interface: tINTERFACE aIDENTIFIER { $$ = get_type(RPC_FC_IP, $2, 0); if (!parse_only) write_forward($$); }
| tINTERFACE aKNOWNTYPE { $$ = get_type(RPC_FC_IP, $2, 0); if (!parse_only) write_forward($$); }
;
interfacedef: attributes interface inherit
'{' statements '}' { $$ = $2;
if ($$->defined) yyerror("multiple definition error\n");
$$->ref = $3;
$$->attrs = $1;
$$->funcs = $5;
$$->defined = TRUE;
if (!parse_only) write_interface($$);
}
;
p_ident: '*' pident %prec PPTR { $$ = $2; $$->ptr_level++; }
| tCONST p_ident { $$ = $2; }
;
pident: ident
| p_ident
| '(' pident ')' { $$ = $2; }
;
pident_list:
pident
| pident_list ',' pident { LINK($3, $1); $$ = $3; }
;
pointer_type:
tREF { $$ = RPC_FC_RP; }
| tUNIQUE { $$ = RPC_FC_UP; }
;
structdef: tSTRUCT t_ident '{' fields '}' { $$ = get_typev(RPC_FC_STRUCT, $2, tsSTRUCT);
$$->fields = $4;
$$->defined = TRUE;
}
;
type: tVOID { $$ = make_tref(NULL, make_type(0, NULL)); }
| aKNOWNTYPE { $$ = make_tref($1, find_type($1, 0)); }
| base_type { $$ = make_tref(NULL, $1); }
| tCONST type { $$ = uniq_tref($2); $$->ref->is_const = TRUE; }
| enumdef { $$ = make_tref(NULL, $1); }
| tENUM aIDENTIFIER { $$ = make_tref(NULL, find_type2($2, tsENUM)); }
| structdef { $$ = make_tref(NULL, $1); }
| tSTRUCT aIDENTIFIER { $$ = make_tref(NULL, get_type(RPC_FC_STRUCT, $2, tsSTRUCT)); }
| uniondef { $$ = make_tref(NULL, $1); }
| tUNION aIDENTIFIER { $$ = make_tref(NULL, find_type2($2, tsUNION)); }
;
typedef: tTYPEDEF m_attributes type pident_list { typeref_t *tref = uniq_tref($3);
$4->tname = tref->name;
tref->name = NULL;
$$ = type_ref(tref);
$$->attrs = $2;
if (!parse_only) write_typedef($$, $4);
reg_types($$, $4, 0);
}
;
uniondef: tUNION t_ident '{' fields '}' { $$ = get_typev(RPC_FC_NON_ENCAPSULATED_UNION, $2, tsUNION);
$$->fields = $4;
$$->defined = TRUE;
}
| tUNION t_ident
tSWITCH '(' type ident ')'
m_ident '{' cases '}' { $$ = get_typev(RPC_FC_ENCAPSULATED_UNION, $2, tsUNION);
$$->defined = TRUE;
}
;
version:
aNUM {}
| aNUM '.' aNUM {}
;
%%
static attr_t *make_attr(enum attr_type type)
{
attr_t *a = xmalloc(sizeof(attr_t));
a->type = type;
a->u.ival = 0;
return a;
}
static attr_t *make_attrv(enum attr_type type, DWORD val)
{
attr_t *a = xmalloc(sizeof(attr_t));
a->type = type;
a->u.ival = val;
return a;
}
static attr_t *make_attrp(enum attr_type type, void *val)
{
attr_t *a = xmalloc(sizeof(attr_t));
a->type = type;
a->u.pval = val;
return a;
}
static type_t *make_type(BYTE type, type_t *ref)
{
type_t *t = xmalloc(sizeof(type_t));
t->name = NULL;
t->type = type;
t->ref = ref;
t->rname = NULL;
t->attrs = NULL;
t->funcs = NULL;
t->fields = NULL;
t->ignore = parse_only;
t->is_const = FALSE;
t->defined = FALSE;
t->written = FALSE;
INIT_LINK(t);
return t;
}
static typeref_t *make_tref(char *name, type_t *ref)
{
typeref_t *t = xmalloc(sizeof(typeref_t));
t->name = name;
t->ref = ref;
t->uniq = ref ? 0 : 1;
return t;
}
static typeref_t *uniq_tref(typeref_t *ref)
{
typeref_t *t = ref;
type_t *tp;
if (t->uniq) return t;
tp = make_type(0, t->ref);
tp->name = t->name;
t->name = NULL;
t->ref = tp;
t->uniq = 1;
return t;
}
static type_t *type_ref(typeref_t *ref)
{
type_t *t = ref->ref;
if (ref->name) free(ref->name);
free(ref);
return t;
}
static void set_type(var_t *v, typeref_t *ref)
{
v->type = ref->ref;
v->tname = ref->name;
ref->name = NULL;
free(ref);
}
static var_t *make_var(char *name)
{
var_t *v = xmalloc(sizeof(var_t));
v->name = name;
v->ptr_level = 0;
v->type = NULL;
v->tname = NULL;
v->attrs = NULL;
INIT_LINK(v);
return v;
}
static func_t *make_func(var_t *def, var_t *args)
{
func_t *f = xmalloc(sizeof(func_t));
f->def = def;
f->args = args;
f->ignore = parse_only;
f->idx = -1;
INIT_LINK(f);
return f;
}
struct rtype {
char *name;
type_t *type;
int t;
struct rtype *next;
};
struct rtype *first;
static type_t *reg_type(type_t *type, char *name, int t)
{
struct rtype *nt;
if (!name) {
yyerror("registering named type without name\n");
return type;
}
nt = xmalloc(sizeof(struct rtype));
nt->name = name;
nt->type = type;
nt->t = t;
nt->next = first;
first = nt;
return type;
}
static type_t *reg_types(type_t *type, var_t *names, int t)
{
type_t *ptr = type;
int ptrc = 0;
while (names) {
var_t *next = NEXT_LINK(names);
if (names->name) {
type_t *cur = ptr;
int cptr = names->ptr_level;
if (cptr > ptrc) {
while (cptr > ptrc) {
cur = ptr = make_type(RPC_FC_FP, cur); /* FIXME: pointer type from attrs? */
ptrc++;
}
} else {
while (cptr < ptrc) {
cur = cur->ref;
cptr++;
}
}
reg_type(cur, names->name, t);
}
free(names);
names = next;
}
return type;
}
static type_t *find_type(char *name, int t)
{
struct rtype *cur = first;
while (cur && (cur->t != t || strcmp(cur->name, name)))
cur = cur->next;
if (!cur) {
yyerror("type %s not found\n", name);
return NULL;
}
return cur->type;
}
static type_t *find_type2(char *name, int t)
{
type_t *tp = find_type(name, t);
free(name);
return tp;
}
int is_type(const char *name)
{
struct rtype *cur = first;
while (cur && (cur->t || strcmp(cur->name, name)))
cur = cur->next;
if (cur) return TRUE;
return FALSE;
}
static type_t *get_type(BYTE type, char *name, int t)
{
struct rtype *cur = NULL;
type_t *tp;
if (name) {
cur = first;
while (cur && (cur->t != t || strcmp(cur->name, name)))
cur = cur->next;
}
if (cur) {
free(name);
return cur->type;
}
tp = make_type(type, NULL);
tp->name = name;
if (!name) return tp;
return reg_type(tp, name, t);
}
static type_t *get_typev(BYTE type, var_t *name, int t)
{
char *sname = NULL;
if (name) {
sname = name->name;
free(name);
}
return get_type(type, sname, t);
}