mirror of
https://github.com/zeek/zeek.git
synced 2025-10-02 14:48:21 +00:00
1339 lines
24 KiB
Text
1339 lines
24 KiB
Text
%{
|
|
// $Id: parse.in 6688 2009-04-16 22:44:55Z vern $
|
|
// See the file "COPYING" in the main distribution directory for copyright.
|
|
%}
|
|
|
|
%expect 71
|
|
|
|
%token TOK_ADD TOK_ADD_TO TOK_ADDR TOK_ALARM TOK_ANY
|
|
%token TOK_ATENDIF TOK_ATELSE TOK_ATIF TOK_ATIFDEF TOK_ATIFNDEF
|
|
%token TOK_BOOL TOK_BREAK TOK_CASE TOK_CONST
|
|
%token TOK_CONSTANT TOK_COPY TOK_COUNT TOK_COUNTER TOK_DEFAULT TOK_DELETE
|
|
%token TOK_DOUBLE TOK_ELSE TOK_ENUM TOK_EVENT TOK_EXPORT TOK_FILE TOK_FOR
|
|
%token TOK_FUNCTION TOK_GLOBAL TOK_ID TOK_IF TOK_INT
|
|
%token TOK_INTERVAL TOK_LIST TOK_LOCAL TOK_MODULE TOK_MATCH TOK_NET
|
|
%token TOK_NEXT TOK_OF TOK_PATTERN TOK_PATTERN_TEXT
|
|
%token TOK_PORT TOK_PRINT TOK_RECORD TOK_REDEF
|
|
%token TOK_REMOVE_FROM TOK_RETURN TOK_SCHEDULE TOK_SET
|
|
%token TOK_STRING TOK_SUBNET TOK_SWITCH TOK_TABLE TOK_THIS
|
|
%token TOK_TIME TOK_TIMEOUT TOK_TIMER TOK_TYPE TOK_UNION TOK_VECTOR TOK_WHEN
|
|
|
|
%token TOK_ATTR_ADD_FUNC TOK_ATTR_ATTR TOK_ATTR_ENCRYPT TOK_ATTR_DEFAULT
|
|
%token TOK_ATTR_OPTIONAL TOK_ATTR_REDEF TOK_ATTR_ROTATE_INTERVAL
|
|
%token TOK_ATTR_ROTATE_SIZE TOK_ATTR_DEL_FUNC TOK_ATTR_EXPIRE_FUNC
|
|
%token TOK_ATTR_EXPIRE_CREATE TOK_ATTR_EXPIRE_READ TOK_ATTR_EXPIRE_WRITE
|
|
%token TOK_ATTR_PERSISTENT TOK_ATTR_SYNCHRONIZED
|
|
%token TOK_ATTR_DISABLE_PRINT_HOOK TOK_ATTR_RAW_OUTPUT TOK_ATTR_MERGEABLE
|
|
%token TOK_ATTR_PRIORITY TOK_ATTR_GROUP
|
|
|
|
%token TOK_DEBUG
|
|
|
|
%left ',' '|'
|
|
%right '=' TOK_ADD_TO TOK_REMOVE_FROM
|
|
%right '?' ':' TOK_USING
|
|
%left TOK_OR
|
|
%left TOK_AND
|
|
%nonassoc '<' '>' TOK_LE TOK_GE TOK_EQ TOK_NE
|
|
%left TOK_IN TOK_NOT_IN
|
|
%left '+' '-'
|
|
%left '*' '/' '%'
|
|
%left TOK_INCR TOK_DECR
|
|
%right '!'
|
|
%left '$' '[' ']' '(' ')' TOK_HAS_FIELD TOK_HAS_ATTR
|
|
|
|
%type <str> TOK_ID TOK_PATTERN_TEXT single_pattern
|
|
%type <id> local_id global_id def_global_id event_id global_or_event_id resolve_id begin_func
|
|
%type <id_l> local_id_list
|
|
%type <ic> init_class
|
|
%type <expr> opt_init
|
|
%type <val> TOK_CONSTANT
|
|
%type <re> pattern
|
|
%type <expr> expr init anonymous_function
|
|
%type <event_expr> event
|
|
%type <stmt> stmt stmt_list func_body for_head
|
|
%type <type> type opt_type refined_type enum_body
|
|
%type <func_type> func_hdr func_params
|
|
%type <type_l> type_list
|
|
%type <type_decl> type_decl formal_args_decl
|
|
%type <type_decl_l> type_decl_list formal_args_decl_list
|
|
%type <record> formal_args
|
|
%type <list> expr_list opt_expr_list
|
|
%type <c_case> case
|
|
%type <case_l> case_list
|
|
%type <attr> attr
|
|
%type <attr_l> attr_list opt_attr
|
|
|
|
%{
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <assert.h>
|
|
|
|
#include "input.h"
|
|
#include "Expr.h"
|
|
#include "Stmt.h"
|
|
#include "Var.h"
|
|
#include "DNS.h"
|
|
#include "RE.h"
|
|
#include "Scope.h"
|
|
|
|
YYLTYPE GetCurrentLocation();
|
|
extern int yyerror(const char[]);
|
|
extern int brolex();
|
|
|
|
#define YYLLOC_DEFAULT(Current, Rhs, N) \
|
|
(Current) = (Rhs)[(N)];
|
|
|
|
/*
|
|
* Part of the module facility: while parsing, keep track of which
|
|
* module to put things in.
|
|
*/
|
|
string current_module = GLOBAL_MODULE_NAME;
|
|
bool is_export = false; // true if in an export {} block
|
|
|
|
/*
|
|
* When parsing an expression for the debugger, where to put the result
|
|
* (obviously not reentrant).
|
|
*/
|
|
extern Expr* g_curr_debug_expr;
|
|
|
|
#define YYLTYPE yyltype
|
|
|
|
Expr* bro_this = 0;
|
|
int in_init = 0;
|
|
bool in_debug = false;
|
|
bool resolving_global_ID = false;
|
|
bool defining_global_ID = false;
|
|
|
|
ID* func_id = 0;
|
|
EnumType *cur_enum_type = 0;
|
|
|
|
static void parser_new_enum (void)
|
|
{
|
|
/* Starting a new enum definition. */
|
|
assert(cur_enum_type == NULL);
|
|
cur_enum_type = new EnumType();
|
|
}
|
|
|
|
static void parser_redef_enum (ID *id)
|
|
{
|
|
/* Redef an enum. id points to the enum to be redefined.
|
|
Let cur_enum_type point to it. */
|
|
assert(cur_enum_type == NULL);
|
|
if ( ! id->Type() )
|
|
id->Error("unknown identifier");
|
|
else
|
|
{
|
|
cur_enum_type = id->Type()->AsEnumType();
|
|
if ( ! cur_enum_type )
|
|
id->Error("not an enum");
|
|
}
|
|
}
|
|
|
|
%}
|
|
|
|
%union {
|
|
char* str;
|
|
ID* id;
|
|
id_list* id_l;
|
|
init_class ic;
|
|
Val* val;
|
|
RE_Matcher* re;
|
|
Expr* expr;
|
|
CallExpr* call_expr;
|
|
EventExpr* event_expr;
|
|
Stmt* stmt;
|
|
ListExpr* list;
|
|
BroType* type;
|
|
RecordType* record;
|
|
FuncType* func_type;
|
|
TypeList* type_l;
|
|
TypeDecl* type_decl;
|
|
type_decl_list* type_decl_l;
|
|
Case* c_case;
|
|
case_list* case_l;
|
|
Attr* attr;
|
|
attr_list* attr_l;
|
|
attr_tag attrtag;
|
|
}
|
|
|
|
%%
|
|
|
|
bro:
|
|
decl_list stmt_list
|
|
{
|
|
if ( optimize )
|
|
$2 = $2->Simplify();
|
|
|
|
if ( stmts )
|
|
stmts->AsStmtList()->Stmts().append($2);
|
|
else
|
|
stmts = $2;
|
|
|
|
// Any objects creates from hereon out should not
|
|
// have file positions associated with them.
|
|
set_location(no_location);
|
|
}
|
|
|
|
|
/* Silly way of allowing the debugger to call yyparse()
|
|
* on an expr rather than a file.
|
|
*/
|
|
TOK_DEBUG { in_debug = true; } expr
|
|
{
|
|
g_curr_debug_expr = $3;
|
|
in_debug = false;
|
|
}
|
|
;
|
|
|
|
decl_list:
|
|
decl_list decl
|
|
|
|
|
;
|
|
|
|
expr:
|
|
'(' expr ')'
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = $2; $$->MarkParen();
|
|
}
|
|
|
|
| TOK_COPY '(' expr ')'
|
|
{
|
|
set_location(@1, @4);
|
|
$$ = new CloneExpr($3);
|
|
}
|
|
|
|
| TOK_INCR expr
|
|
{
|
|
set_location(@1, @2);
|
|
$$ = new IncrExpr(EXPR_INCR, $2);
|
|
}
|
|
|
|
| TOK_DECR expr
|
|
{
|
|
set_location(@1, @2);
|
|
$$ = new IncrExpr(EXPR_DECR, $2);
|
|
}
|
|
|
|
| '!' expr
|
|
{
|
|
set_location(@1, @2);
|
|
$$ = new NotExpr($2);
|
|
}
|
|
|
|
| '-' expr %prec '!'
|
|
{
|
|
set_location(@1, @2);
|
|
$$ = new NegExpr($2);
|
|
}
|
|
|
|
| '+' expr %prec '!'
|
|
{
|
|
set_location(@1, @2);
|
|
$$ = new PosExpr($2);
|
|
}
|
|
|
|
| expr '+' expr
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new AddExpr($1, $3);
|
|
}
|
|
|
|
| expr TOK_ADD_TO expr
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new AddToExpr($1, $3);
|
|
}
|
|
|
|
| expr '-' expr
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new SubExpr($1, $3);
|
|
}
|
|
|
|
| expr TOK_REMOVE_FROM expr
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new RemoveFromExpr($1, $3);
|
|
}
|
|
|
|
| expr '*' expr
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new TimesExpr($1, $3);
|
|
}
|
|
|
|
| expr '/' expr
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new DivideExpr($1, $3);
|
|
}
|
|
|
|
| expr '%' expr
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new ModExpr($1, $3);
|
|
}
|
|
|
|
| expr TOK_AND expr
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new BoolExpr(EXPR_AND, $1, $3);
|
|
}
|
|
|
|
| expr TOK_OR expr
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new BoolExpr(EXPR_OR, $1, $3);
|
|
}
|
|
|
|
| expr TOK_EQ expr
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new EqExpr(EXPR_EQ, $1, $3);
|
|
}
|
|
|
|
| expr TOK_NE expr
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new EqExpr(EXPR_NE, $1, $3);
|
|
}
|
|
|
|
| expr '<' expr
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new RelExpr(EXPR_LT, $1, $3);
|
|
}
|
|
|
|
| expr TOK_LE expr
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new RelExpr(EXPR_LE, $1, $3);
|
|
}
|
|
|
|
| expr '>' expr
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new RelExpr(EXPR_GT, $1, $3);
|
|
}
|
|
|
|
| expr TOK_GE expr
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new RelExpr(EXPR_GE, $1, $3);
|
|
}
|
|
|
|
| expr '?' expr ':' expr
|
|
{
|
|
set_location(@1, @5);
|
|
$$ = new CondExpr($1, $3, $5);
|
|
}
|
|
|
|
| expr '=' expr
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = get_assign_expr($1, $3, in_init);
|
|
}
|
|
|
|
| TOK_LOCAL local_id '=' expr
|
|
{
|
|
set_location(@2, @4);
|
|
$$ = add_and_assign_local($2, $4, new Val(1, TYPE_BOOL));
|
|
}
|
|
|
|
| expr '[' expr_list ']'
|
|
{
|
|
set_location(@1, @4);
|
|
$$ = new IndexExpr($1, $3);
|
|
}
|
|
|
|
| expr '$' TOK_ID
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new FieldExpr($1, $3);
|
|
}
|
|
|
|
| '$' TOK_ID '=' expr
|
|
{
|
|
set_location(@1, @4);
|
|
$$ = new FieldAssignExpr($2, $4);
|
|
}
|
|
|
|
| '$' TOK_ID func_params '='
|
|
{
|
|
func_id = current_scope()->GenerateTemporary("anonymous-function");
|
|
func_id->SetInferReturnType(true);
|
|
begin_func(func_id,
|
|
current_module.c_str(),
|
|
FUNC_FLAVOR_FUNCTION,
|
|
0,
|
|
$3);
|
|
}
|
|
func_body
|
|
{
|
|
$$ = new FieldAssignExpr($2, new ConstExpr(func_id->ID_Val()));
|
|
}
|
|
|
|
| expr TOK_IN expr
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new InExpr($1, $3);
|
|
}
|
|
|
|
| expr TOK_NOT_IN expr
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new NotExpr(new InExpr($1, $3));
|
|
}
|
|
|
|
| '[' expr_list ']'
|
|
{
|
|
// A little crufty: we peek at the type of
|
|
// the first expression in the list. If it's
|
|
// a record or a field assignment, then this
|
|
// is a record constructor. If not, then this
|
|
// is a list used for an initializer.
|
|
|
|
set_location(@1, @3);
|
|
|
|
Expr* e0 = $2->Exprs()[0];
|
|
if ( e0->Tag() == EXPR_FIELD_ASSIGN ||
|
|
e0->Type()->Tag() == TYPE_RECORD )
|
|
$$ = new RecordConstructorExpr($2);
|
|
else
|
|
$$ = $2;
|
|
}
|
|
|
|
| '[' ']'
|
|
{
|
|
// We take this as an empty record constructor.
|
|
$$ = new RecordConstructorExpr(new ListExpr);
|
|
}
|
|
|
|
|
|
| TOK_RECORD '(' expr_list ')'
|
|
{
|
|
set_location(@1, @4);
|
|
$$ = new RecordConstructorExpr($3);
|
|
}
|
|
|
|
| TOK_TABLE '(' { ++in_init; } opt_expr_list ')' { --in_init; }
|
|
opt_attr
|
|
{ // the ++in_init fixes up the parsing of "[x] = y"
|
|
set_location(@1, @5);
|
|
$$ = new TableConstructorExpr($4, $7);
|
|
}
|
|
|
|
| TOK_SET '(' opt_expr_list ')' opt_attr
|
|
{
|
|
set_location(@1, @4);
|
|
$$ = new SetConstructorExpr($3, $5);
|
|
}
|
|
|
|
| TOK_VECTOR '(' opt_expr_list ')'
|
|
{
|
|
set_location(@1, @4);
|
|
$$ = new VectorConstructorExpr($3);
|
|
}
|
|
|
|
| TOK_MATCH expr TOK_USING expr
|
|
{
|
|
set_location(@1, @4);
|
|
$$ = new RecordMatchExpr($2, $4);
|
|
}
|
|
|
|
| expr '(' opt_expr_list ')'
|
|
{
|
|
set_location(@1, @4);
|
|
$$ = new CallExpr($1, $3);
|
|
}
|
|
|
|
| expr TOK_HAS_FIELD TOK_ID
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new HasFieldExpr($1, $3);
|
|
}
|
|
|
|
| anonymous_function
|
|
|
|
| TOK_SCHEDULE expr '{' event '}'
|
|
{
|
|
set_location(@1, @5);
|
|
$$ = new ScheduleExpr($2, $4);
|
|
}
|
|
|
|
| TOK_ID
|
|
{
|
|
set_location(@1);
|
|
|
|
ID* id = lookup_ID($1, current_module.c_str());
|
|
if ( ! id )
|
|
{
|
|
if ( ! in_debug )
|
|
{
|
|
/* // CHECK THAT THIS IS NOT GLOBAL.
|
|
id = install_ID($1, current_module.c_str(),
|
|
false, is_export);
|
|
*/
|
|
|
|
yyerror(fmt("unknown identifier %s", $1));
|
|
YYERROR;
|
|
}
|
|
else
|
|
{
|
|
yyerror(fmt("unknown identifier %s", $1));
|
|
YYERROR;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if ( ! id->Type() )
|
|
{
|
|
id->Error("undeclared variable");
|
|
id->SetType(error_type());
|
|
$$ = new NameExpr(id);
|
|
}
|
|
|
|
else if ( id->IsEnumConst() )
|
|
{
|
|
EnumType* t = id->Type()->AsEnumType();
|
|
int intval = t->Lookup(id->ModuleName(),
|
|
id->Name());
|
|
if ( intval < 0 )
|
|
internal_error("enum value not found for %s", id->Name());
|
|
$$ = new ConstExpr(new EnumVal(intval, t));
|
|
}
|
|
else
|
|
$$ = new NameExpr(id);
|
|
}
|
|
}
|
|
|
|
| TOK_CONSTANT
|
|
{
|
|
set_location(@1);
|
|
$$ = new ConstExpr($1);
|
|
}
|
|
|
|
| pattern
|
|
{
|
|
set_location(@1);
|
|
$1->Compile();
|
|
$$ = new ConstExpr(new PatternVal($1));
|
|
}
|
|
|
|
| TOK_THIS
|
|
{
|
|
set_location(@1);
|
|
$$ = bro_this->Ref();
|
|
}
|
|
|
|
| '|' expr '|'
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new SizeExpr($2);
|
|
}
|
|
;
|
|
|
|
expr_list:
|
|
expr_list ',' expr
|
|
{
|
|
set_location(@1, @3);
|
|
$1->Append($3);
|
|
}
|
|
|
|
| expr
|
|
{
|
|
set_location(@1);
|
|
$$ = new ListExpr($1);
|
|
}
|
|
;
|
|
|
|
opt_expr_list:
|
|
expr_list
|
|
|
|
|
{ $$ = new ListExpr(); }
|
|
;
|
|
|
|
opt_comma:
|
|
','
|
|
|
|
|
;
|
|
|
|
pattern:
|
|
pattern '|' single_pattern
|
|
{
|
|
$1->AddPat($3);
|
|
delete [] $3;
|
|
}
|
|
|
|
| single_pattern
|
|
{
|
|
$$ = new RE_Matcher($1);
|
|
delete [] $1;
|
|
}
|
|
;
|
|
|
|
single_pattern:
|
|
'/' { begin_RE(); } TOK_PATTERN_TEXT { end_RE(); } '/'
|
|
{ $$ = $3; }
|
|
;
|
|
|
|
enum_body:
|
|
enum_body_list opt_comma
|
|
{
|
|
$$ = cur_enum_type;
|
|
cur_enum_type = NULL;
|
|
}
|
|
;
|
|
|
|
enum_body_list:
|
|
enum_body_elem /* No action */
|
|
| enum_body_list ',' enum_body_elem /* no action */
|
|
;
|
|
|
|
enum_body_elem:
|
|
/* TODO: We could also define this as TOK_ID '=' expr, (or
|
|
TOK_ID '=' = TOK_ID) so that we can return more descriptive
|
|
error messages if someboy tries to use constant variables as
|
|
enumerator.
|
|
*/
|
|
TOK_ID '=' TOK_CONSTANT
|
|
{
|
|
set_location(@1, @3);
|
|
assert(cur_enum_type);
|
|
if ( $3->Type()->Tag() != TYPE_COUNT )
|
|
error("enumerator is not a count constant");
|
|
else
|
|
cur_enum_type->AddName(current_module, $1, $3->InternalUnsigned(), is_export);
|
|
}
|
|
|
|
| TOK_ID '=' '-' TOK_CONSTANT
|
|
{
|
|
/* We only accept counts as enumerator, but we want to return a nice
|
|
error message if users triy to use a negative integer (will also
|
|
catch other cases, but that's fine.)
|
|
*/
|
|
error("enumerator is not a count constant");
|
|
}
|
|
|
|
| TOK_ID
|
|
{
|
|
set_location(@1);
|
|
assert(cur_enum_type);
|
|
cur_enum_type->AddName(current_module, $1, is_export);
|
|
}
|
|
;
|
|
|
|
type:
|
|
TOK_BOOL {
|
|
set_location(@1);
|
|
$$ = base_type(TYPE_BOOL);
|
|
}
|
|
|
|
| TOK_INT {
|
|
set_location(@1);
|
|
$$ = base_type(TYPE_INT);
|
|
}
|
|
|
|
| TOK_COUNT {
|
|
set_location(@1);
|
|
$$ = base_type(TYPE_COUNT);
|
|
}
|
|
|
|
| TOK_COUNTER {
|
|
set_location(@1);
|
|
$$ = base_type(TYPE_COUNTER);
|
|
}
|
|
|
|
| TOK_DOUBLE {
|
|
set_location(@1);
|
|
$$ = base_type(TYPE_DOUBLE);
|
|
}
|
|
|
|
| TOK_TIME {
|
|
set_location(@1);
|
|
$$ = base_type(TYPE_TIME);
|
|
}
|
|
|
|
| TOK_INTERVAL {
|
|
set_location(@1);
|
|
$$ = base_type(TYPE_INTERVAL);
|
|
}
|
|
|
|
| TOK_STRING {
|
|
set_location(@1);
|
|
$$ = base_type(TYPE_STRING);
|
|
}
|
|
|
|
| TOK_PATTERN {
|
|
set_location(@1);
|
|
$$ = base_type(TYPE_PATTERN);
|
|
}
|
|
|
|
| TOK_TIMER {
|
|
set_location(@1);
|
|
$$ = base_type(TYPE_TIMER);
|
|
}
|
|
|
|
| TOK_PORT {
|
|
set_location(@1);
|
|
$$ = base_type(TYPE_PORT);
|
|
}
|
|
|
|
| TOK_ADDR {
|
|
set_location(@1);
|
|
$$ = base_type(TYPE_ADDR);
|
|
}
|
|
|
|
| TOK_NET {
|
|
set_location(@1);
|
|
$$ = base_type(TYPE_NET);
|
|
}
|
|
|
|
| TOK_SUBNET {
|
|
set_location(@1);
|
|
$$ = base_type(TYPE_SUBNET);
|
|
}
|
|
|
|
| TOK_ANY {
|
|
set_location(@1);
|
|
$$ = base_type(TYPE_ANY);
|
|
}
|
|
|
|
| TOK_TABLE '[' type_list ']' TOK_OF type
|
|
{
|
|
set_location(@1, @6);
|
|
$$ = new TableType($3, $6);
|
|
}
|
|
|
|
| TOK_SET '[' type_list ']'
|
|
{
|
|
set_location(@1, @4);
|
|
$$ = new SetType($3, 0);
|
|
}
|
|
|
|
| TOK_RECORD '{' type_decl_list '}'
|
|
{
|
|
set_location(@1, @4);
|
|
$$ = new RecordType($3);
|
|
}
|
|
|
|
| TOK_UNION '{' type_list '}'
|
|
{
|
|
set_location(@1, @4);
|
|
error("union type not implemented");
|
|
$$ = 0;
|
|
}
|
|
|
|
| TOK_ENUM '{' { set_location(@1); parser_new_enum(); } enum_body '}'
|
|
{
|
|
set_location(@1, @5);
|
|
$4->UpdateLocationEndInfo(@5);
|
|
$$ = $4;
|
|
}
|
|
|
|
| TOK_LIST
|
|
{
|
|
set_location(@1);
|
|
// $$ = new TypeList();
|
|
error("list type not implemented");
|
|
$$ = 0;
|
|
}
|
|
|
|
| TOK_LIST TOK_OF type
|
|
{
|
|
set_location(@1);
|
|
// $$ = new TypeList($3);
|
|
error("list type not implemented");
|
|
$$ = 0;
|
|
}
|
|
|
|
| TOK_VECTOR TOK_OF type
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new VectorType($3);
|
|
}
|
|
|
|
| TOK_FUNCTION func_params
|
|
{
|
|
set_location(@1, @2);
|
|
$$ = $2;
|
|
}
|
|
|
|
| TOK_EVENT '(' formal_args ')'
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new FuncType($3, 0, 1);
|
|
}
|
|
|
|
| TOK_FILE TOK_OF type
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new FileType($3);
|
|
}
|
|
|
|
| TOK_FILE
|
|
{
|
|
set_location(@1);
|
|
$$ = new FileType(base_type(TYPE_STRING));
|
|
}
|
|
|
|
| resolve_id
|
|
{
|
|
if ( ! $1 || ! ($$ = $1->AsType()) )
|
|
{
|
|
NullStmt here;
|
|
if ( $1 )
|
|
$1->Error("not a BRO type", &here);
|
|
$$ = error_type();
|
|
}
|
|
else
|
|
Ref($$);
|
|
}
|
|
;
|
|
|
|
type_list:
|
|
type_list ',' type
|
|
{ $1->AppendEvenIfNotPure($3); }
|
|
| type
|
|
{
|
|
$$ = new TypeList($1);
|
|
$$->Append($1);
|
|
}
|
|
;
|
|
|
|
type_decl_list:
|
|
type_decl_list type_decl
|
|
{ $1->append($2); }
|
|
|
|
|
{ $$ = new type_decl_list(); }
|
|
;
|
|
|
|
type_decl:
|
|
TOK_ID ':' type opt_attr ';'
|
|
{
|
|
set_location(@1, @5);
|
|
$$ = new TypeDecl($3, $1, $4);
|
|
}
|
|
;
|
|
|
|
formal_args:
|
|
formal_args_decl_list
|
|
{ $$ = new RecordType($1); }
|
|
| formal_args_decl_list ';'
|
|
{ $$ = new RecordType($1); }
|
|
|
|
|
{ $$ = new RecordType(new type_decl_list()); }
|
|
;
|
|
|
|
formal_args_decl_list:
|
|
formal_args_decl_list ';' formal_args_decl
|
|
{ $1->append($3); }
|
|
| formal_args_decl_list ',' formal_args_decl
|
|
{ $1->append($3); }
|
|
| formal_args_decl
|
|
{ $$ = new type_decl_list(); $$->append($1); }
|
|
;
|
|
|
|
formal_args_decl:
|
|
TOK_ID ':' type opt_attr
|
|
{
|
|
set_location(@1, @4);
|
|
$$ = new TypeDecl($3, $1, $4);
|
|
}
|
|
;
|
|
|
|
decl:
|
|
TOK_MODULE TOK_ID ';'
|
|
{ current_module = $2; }
|
|
|
|
| TOK_EXPORT '{' { is_export = true; } decl_list '}'
|
|
{ is_export = false; }
|
|
|
|
| TOK_GLOBAL def_global_id opt_type init_class opt_init opt_attr ';'
|
|
{ add_global($2, $3, $4, $5, $6, VAR_REGULAR); }
|
|
|
|
| TOK_CONST def_global_id opt_type init_class opt_init opt_attr ';'
|
|
{ add_global($2, $3, $4, $5, $6, VAR_CONST); }
|
|
|
|
| TOK_REDEF global_id opt_type init_class opt_init opt_attr ';'
|
|
{ add_global($2, $3, $4, $5, $6, VAR_REDEF); }
|
|
|
|
| TOK_REDEF TOK_ENUM global_id TOK_ADD_TO
|
|
'{' { parser_redef_enum($3); } enum_body '}' ';'
|
|
{ /* no action */ }
|
|
|
|
| TOK_TYPE def_global_id ':' refined_type opt_attr ';'
|
|
{
|
|
add_type($2, $4, $5, 0);
|
|
}
|
|
|
|
| TOK_EVENT event_id ':' refined_type opt_attr ';'
|
|
{ add_type($2, $4, $5, 1); }
|
|
|
|
| func_hdr func_body
|
|
{ }
|
|
|
|
| conditional
|
|
;
|
|
|
|
conditional:
|
|
TOK_ATIF '(' expr ')'
|
|
{ do_atif($3); }
|
|
| TOK_ATIFDEF '(' TOK_ID ')'
|
|
{ do_atifdef($3); }
|
|
| TOK_ATIFNDEF '(' TOK_ID ')'
|
|
{ do_atifndef($3); }
|
|
| TOK_ATENDIF
|
|
{ do_atendif(); }
|
|
| TOK_ATELSE
|
|
{ do_atelse(); }
|
|
;
|
|
|
|
func_hdr:
|
|
TOK_FUNCTION def_global_id func_params
|
|
{
|
|
begin_func($2, current_module.c_str(),
|
|
FUNC_FLAVOR_FUNCTION, 0, $3);
|
|
$$ = $3;
|
|
}
|
|
| TOK_EVENT event_id func_params
|
|
{
|
|
begin_func($2, current_module.c_str(),
|
|
FUNC_FLAVOR_EVENT, 0, $3);
|
|
$$ = $3;
|
|
}
|
|
| TOK_REDEF TOK_EVENT event_id func_params
|
|
{
|
|
begin_func($3, current_module.c_str(),
|
|
FUNC_FLAVOR_EVENT, 1, $4);
|
|
$$ = $4;
|
|
}
|
|
;
|
|
|
|
func_body:
|
|
opt_attr '{' stmt_list '}'
|
|
{
|
|
if ( optimize )
|
|
$3 = $3->Simplify();
|
|
|
|
end_func($3, $1);
|
|
}
|
|
;
|
|
|
|
anonymous_function:
|
|
TOK_FUNCTION begin_func func_body
|
|
{ $$ = new ConstExpr($2->ID_Val()); }
|
|
;
|
|
|
|
begin_func:
|
|
func_params
|
|
{
|
|
$$ = current_scope()->GenerateTemporary("anonymous-function");
|
|
begin_func($$, current_module.c_str(),
|
|
FUNC_FLAVOR_FUNCTION, 0, $1);
|
|
}
|
|
;
|
|
|
|
func_params:
|
|
'(' formal_args ')' ':' type
|
|
{ $$ = new FuncType($2, $5, 0); }
|
|
| '(' formal_args ')'
|
|
{ $$ = new FuncType($2, base_type(TYPE_VOID), 0); }
|
|
;
|
|
|
|
refined_type:
|
|
type_list '{' type_decl_list '}'
|
|
{ $$ = refine_type($1, $3); }
|
|
| type_list
|
|
{ $$ = refine_type($1, 0); }
|
|
;
|
|
|
|
opt_type:
|
|
':' type
|
|
{ $$ = $2; }
|
|
|
|
|
{ $$ = 0; }
|
|
;
|
|
|
|
init_class:
|
|
{ $$ = INIT_NONE; }
|
|
| '=' { $$ = INIT_FULL; }
|
|
| TOK_ADD_TO { $$ = INIT_EXTRA; }
|
|
| TOK_REMOVE_FROM { $$ = INIT_REMOVE; }
|
|
;
|
|
|
|
opt_init:
|
|
{ ++in_init; } init { --in_init; }
|
|
{ $$ = $2; }
|
|
|
|
|
{ $$ = 0; }
|
|
;
|
|
|
|
init:
|
|
'{' opt_expr_list '}'
|
|
{ $$ = $2; }
|
|
| '{' expr_list ',' '}'
|
|
{ $$ = $2; }
|
|
| expr
|
|
;
|
|
|
|
opt_attr:
|
|
attr_list
|
|
|
|
|
{ $$ = 0; }
|
|
;
|
|
|
|
attr_list:
|
|
attr_list attr
|
|
{ $1->append($2); }
|
|
| attr
|
|
{
|
|
$$ = new attr_list;
|
|
$$->append($1);
|
|
}
|
|
;
|
|
|
|
attr:
|
|
TOK_ATTR_DEFAULT '=' expr
|
|
{ $$ = new Attr(ATTR_DEFAULT, $3); }
|
|
| TOK_ATTR_OPTIONAL
|
|
{ $$ = new Attr(ATTR_OPTIONAL); }
|
|
| TOK_ATTR_REDEF
|
|
{ $$ = new Attr(ATTR_REDEF); }
|
|
| TOK_ATTR_ROTATE_INTERVAL '=' expr
|
|
{ $$ = new Attr(ATTR_ROTATE_INTERVAL, $3); }
|
|
| TOK_ATTR_ROTATE_SIZE '=' expr
|
|
{ $$ = new Attr(ATTR_ROTATE_SIZE, $3); }
|
|
| TOK_ATTR_ADD_FUNC '=' expr
|
|
{ $$ = new Attr(ATTR_ADD_FUNC, $3); }
|
|
| TOK_ATTR_DEL_FUNC '=' expr
|
|
{ $$ = new Attr(ATTR_DEL_FUNC, $3); }
|
|
| TOK_ATTR_EXPIRE_FUNC '=' expr
|
|
{ $$ = new Attr(ATTR_EXPIRE_FUNC, $3); }
|
|
| TOK_ATTR_EXPIRE_CREATE '=' expr
|
|
{ $$ = new Attr(ATTR_EXPIRE_CREATE, $3); }
|
|
| TOK_ATTR_EXPIRE_READ '=' expr
|
|
{ $$ = new Attr(ATTR_EXPIRE_READ, $3); }
|
|
| TOK_ATTR_EXPIRE_WRITE '=' expr
|
|
{ $$ = new Attr(ATTR_EXPIRE_WRITE, $3); }
|
|
| TOK_ATTR_PERSISTENT
|
|
{ $$ = new Attr(ATTR_PERSISTENT); }
|
|
| TOK_ATTR_SYNCHRONIZED
|
|
{ $$ = new Attr(ATTR_SYNCHRONIZED); }
|
|
| TOK_ATTR_ENCRYPT
|
|
{ $$ = new Attr(ATTR_ENCRYPT); }
|
|
| TOK_ATTR_ENCRYPT '=' expr
|
|
{ $$ = new Attr(ATTR_ENCRYPT, $3); }
|
|
| TOK_ATTR_DISABLE_PRINT_HOOK
|
|
{ $$ = new Attr(ATTR_DISABLE_PRINT_HOOK); }
|
|
| TOK_ATTR_RAW_OUTPUT
|
|
{ $$ = new Attr(ATTR_RAW_OUTPUT); }
|
|
| TOK_ATTR_MERGEABLE
|
|
{ $$ = new Attr(ATTR_MERGEABLE); }
|
|
| TOK_ATTR_PRIORITY '=' expr
|
|
{ $$ = new Attr(ATTR_PRIORITY, $3); }
|
|
| TOK_ATTR_GROUP '=' expr
|
|
{ $$ = new Attr(ATTR_GROUP, $3); }
|
|
;
|
|
|
|
stmt:
|
|
'{' stmt_list '}'
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = $2;
|
|
}
|
|
|
|
| TOK_ALARM expr_list ';'
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new AlarmStmt($2);
|
|
}
|
|
|
|
| TOK_PRINT expr_list ';'
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new PrintStmt($2);
|
|
}
|
|
|
|
| TOK_EVENT event ';'
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new EventStmt($2);
|
|
}
|
|
|
|
| TOK_IF '(' expr ')' stmt
|
|
{
|
|
set_location(@1, @4);
|
|
$$ = new IfStmt($3, $5, new NullStmt());
|
|
}
|
|
|
|
| TOK_IF '(' expr ')' stmt TOK_ELSE stmt
|
|
{
|
|
set_location(@1, @4);
|
|
$$ = new IfStmt($3, $5, $7);
|
|
}
|
|
|
|
| TOK_SWITCH expr '{' case_list '}'
|
|
{
|
|
set_location(@1, @2);
|
|
$$ = new SwitchStmt($2, $4);
|
|
}
|
|
|
|
| for_head stmt
|
|
{ $1->AsForStmt()->AddBody($2); }
|
|
|
|
| TOK_NEXT ';'
|
|
{
|
|
set_location(@1, @2);
|
|
$$ = new NextStmt;
|
|
}
|
|
|
|
| TOK_BREAK ';'
|
|
{
|
|
set_location(@1, @2);
|
|
$$ = new BreakStmt;
|
|
}
|
|
|
|
| TOK_RETURN ';'
|
|
{
|
|
set_location(@1, @2);
|
|
$$ = new ReturnStmt(0);
|
|
}
|
|
|
|
| TOK_RETURN expr ';'
|
|
{
|
|
set_location(@1, @2);
|
|
$$ = new ReturnStmt($2);
|
|
}
|
|
|
|
| TOK_ADD expr ';'
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new AddStmt($2);
|
|
}
|
|
|
|
| TOK_DELETE expr ';'
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new DelStmt($2);
|
|
}
|
|
|
|
| TOK_LOCAL local_id opt_type init_class opt_init opt_attr ';'
|
|
{
|
|
set_location(@1, @7);
|
|
$$ = add_local($2, $3, $4, $5, $6, VAR_REGULAR);
|
|
}
|
|
|
|
| TOK_CONST local_id opt_type init_class opt_init opt_attr ';'
|
|
{
|
|
set_location(@1, @6);
|
|
$$ = add_local($2, $3, $4, $5, $6, VAR_CONST);
|
|
}
|
|
|
|
| TOK_WHEN '(' expr ')' stmt
|
|
{
|
|
set_location(@3, @5);
|
|
$$ = new WhenStmt($3, $5, 0, 0, false);
|
|
}
|
|
|
|
| TOK_WHEN '(' expr ')' stmt TOK_TIMEOUT expr '{' stmt_list '}'
|
|
{
|
|
set_location(@3, @8);
|
|
$$ = new WhenStmt($3, $5, $9, $7, false);
|
|
}
|
|
|
|
|
|
| TOK_RETURN TOK_WHEN '(' expr ')' stmt
|
|
{
|
|
set_location(@4, @6);
|
|
$$ = new WhenStmt($4, $6, 0, 0, true);
|
|
}
|
|
|
|
| TOK_RETURN TOK_WHEN '(' expr ')' stmt TOK_TIMEOUT expr '{' stmt_list '}'
|
|
{
|
|
set_location(@4, @9);
|
|
$$ = new WhenStmt($4, $6, $10, $8, true);
|
|
}
|
|
|
|
| expr ';'
|
|
{
|
|
set_location(@1, @2);
|
|
$$ = new ExprStmt($1);
|
|
}
|
|
|
|
| ';'
|
|
{
|
|
set_location(@1, @1);
|
|
$$ = new NullStmt;
|
|
}
|
|
|
|
| conditional
|
|
{ $$ = new NullStmt; }
|
|
;
|
|
|
|
stmt_list:
|
|
stmt_list stmt
|
|
{
|
|
set_location(@1, @2);
|
|
$1->AsStmtList()->Stmts().append($2);
|
|
$1->UpdateLocationEndInfo(@2);
|
|
}
|
|
|
|
|
{ $$ = new StmtList(); }
|
|
;
|
|
|
|
event:
|
|
TOK_ID '(' opt_expr_list ')'
|
|
{
|
|
set_location(@1, @4);
|
|
$$ = new EventExpr($1, $3);
|
|
}
|
|
;
|
|
|
|
case_list:
|
|
case_list case
|
|
{ $1->append($2); }
|
|
|
|
|
{ $$ = new case_list; }
|
|
;
|
|
|
|
case:
|
|
TOK_CASE expr_list ':' stmt_list
|
|
{ $$ = new Case($2, $4); }
|
|
|
|
|
TOK_DEFAULT ':' stmt_list
|
|
{ $$ = new Case(0, $3); }
|
|
;
|
|
|
|
for_head:
|
|
TOK_FOR '(' TOK_ID TOK_IN expr ')'
|
|
{
|
|
set_location(@1, @6);
|
|
|
|
// This rule needs to be separate from the loop
|
|
// body so that we execute these actions - defining
|
|
// the local variable - prior to parsing the body,
|
|
// which might refer to the variable.
|
|
ID* loop_var = lookup_ID($3, current_module.c_str());
|
|
|
|
if ( loop_var )
|
|
{
|
|
if ( loop_var->IsGlobal() )
|
|
loop_var->Error("global used in for loop");
|
|
}
|
|
|
|
else
|
|
loop_var = install_ID($3, current_module.c_str(),
|
|
false, false);
|
|
|
|
id_list* loop_vars = new id_list;
|
|
loop_vars->append(loop_var);
|
|
|
|
$$ = new ForStmt(loop_vars, $5);
|
|
}
|
|
|
|
|
TOK_FOR '(' '[' local_id_list ']' TOK_IN expr ')'
|
|
{ $$ = new ForStmt($4, $7); }
|
|
;
|
|
|
|
local_id_list:
|
|
local_id_list ',' local_id
|
|
{ $1->append($3); }
|
|
| local_id
|
|
{
|
|
$$ = new id_list;
|
|
$$->append($1);
|
|
}
|
|
;
|
|
|
|
local_id:
|
|
TOK_ID
|
|
{
|
|
set_location(@1);
|
|
|
|
$$ = lookup_ID($1, current_module.c_str());
|
|
if ( $$ )
|
|
{
|
|
if ( $$->IsGlobal() )
|
|
$$->Error("already a global identifier");
|
|
delete [] $1;
|
|
}
|
|
|
|
else
|
|
{
|
|
$$ = install_ID($1, current_module.c_str(),
|
|
false, is_export);
|
|
}
|
|
}
|
|
;
|
|
|
|
global_id:
|
|
{ resolving_global_ID = 1; } global_or_event_id
|
|
{ $$ = $2; }
|
|
;
|
|
|
|
def_global_id:
|
|
{ defining_global_ID = 1; } global_id { defining_global_ID = 0; }
|
|
{ $$ = $2; }
|
|
;
|
|
|
|
event_id:
|
|
{ resolving_global_ID = 0; } global_or_event_id
|
|
{ $$ = $2; }
|
|
;
|
|
|
|
global_or_event_id:
|
|
TOK_ID
|
|
{
|
|
set_location(@1);
|
|
|
|
$$ = lookup_ID($1, current_module.c_str(), false, defining_global_ID);
|
|
if ( $$ )
|
|
{
|
|
if ( ! $$->IsGlobal() )
|
|
$$->Error("already a local identifier");
|
|
|
|
delete [] $1;
|
|
}
|
|
|
|
else
|
|
{
|
|
const char* module_name =
|
|
resolving_global_ID ?
|
|
current_module.c_str() : 0;
|
|
|
|
$$ = install_ID($1, module_name,
|
|
true, is_export);
|
|
}
|
|
}
|
|
;
|
|
|
|
|
|
resolve_id:
|
|
TOK_ID
|
|
{
|
|
set_location(@1);
|
|
$$ = lookup_ID($1, current_module.c_str());
|
|
if ( ! $$ )
|
|
error("identifier not defined:", $1);
|
|
delete [] $1;
|
|
}
|
|
;
|
|
|
|
%%
|
|
|
|
int yyerror(const char msg[])
|
|
{
|
|
char* msgbuf = new char[strlen(msg) + strlen(last_tok) + 64];
|
|
|
|
if ( last_tok[0] == '\n' )
|
|
sprintf(msgbuf, "%s, on previous line", msg);
|
|
else if ( last_tok[0] == '\0' )
|
|
sprintf(msgbuf, "%s, at end of file", msg);
|
|
else
|
|
sprintf(msgbuf, "%s, at or near \"%s\"", msg, last_tok);
|
|
|
|
error(msgbuf);
|
|
|
|
return 0;
|
|
}
|