mirror of
https://github.com/zeek/zeek.git
synced 2025-10-02 06:38:20 +00:00
1570 lines
29 KiB
Text
1570 lines
29 KiB
Text
%{
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// See the file "COPYING" in the main distribution directory for copyright.
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%}
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%expect 75
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%token TOK_ADD TOK_ADD_TO TOK_ADDR TOK_ANY
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%token TOK_ATENDIF TOK_ATELSE TOK_ATIF TOK_ATIFDEF TOK_ATIFNDEF
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%token TOK_BOOL TOK_BREAK TOK_CASE TOK_CONST
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%token TOK_CONSTANT TOK_COPY TOK_COUNT TOK_COUNTER TOK_DEFAULT TOK_DELETE
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%token TOK_DOUBLE TOK_ELSE TOK_ENUM TOK_EVENT TOK_EXPORT TOK_FALLTHROUGH
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%token TOK_FILE TOK_FOR TOK_FUNCTION TOK_GLOBAL TOK_HOOK TOK_ID TOK_IF TOK_INT
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%token TOK_INTERVAL TOK_LIST TOK_LOCAL TOK_MODULE
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%token TOK_NEXT TOK_OF TOK_OPAQUE TOK_PATTERN TOK_PATTERN_TEXT
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%token TOK_PORT TOK_PRINT TOK_RECORD TOK_REDEF
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%token TOK_REMOVE_FROM TOK_RETURN TOK_SCHEDULE TOK_SET
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%token TOK_STRING TOK_SUBNET TOK_SWITCH TOK_TABLE
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%token TOK_TIME TOK_TIMEOUT TOK_TIMER TOK_TYPE TOK_UNION TOK_VECTOR TOK_WHEN
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%token TOK_ATTR_ADD_FUNC TOK_ATTR_ENCRYPT TOK_ATTR_DEFAULT
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%token TOK_ATTR_OPTIONAL TOK_ATTR_REDEF TOK_ATTR_ROTATE_INTERVAL
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%token TOK_ATTR_ROTATE_SIZE TOK_ATTR_DEL_FUNC TOK_ATTR_EXPIRE_FUNC
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%token TOK_ATTR_EXPIRE_CREATE TOK_ATTR_EXPIRE_READ TOK_ATTR_EXPIRE_WRITE
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%token TOK_ATTR_PERSISTENT TOK_ATTR_SYNCHRONIZED
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%token TOK_ATTR_RAW_OUTPUT TOK_ATTR_MERGEABLE
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%token TOK_ATTR_PRIORITY TOK_ATTR_LOG TOK_ATTR_ERROR_HANDLER
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%token TOK_ATTR_TYPE_COLUMN
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%token TOK_DEBUG
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%token TOK_NO_TEST
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%nonassoc TOK_HOOK
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%left ',' '|'
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%right '=' TOK_ADD_TO TOK_REMOVE_FROM
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%right '?' ':'
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%left TOK_OR
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%left TOK_AND
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%nonassoc '<' '>' TOK_LE TOK_GE TOK_EQ TOK_NE
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%left TOK_IN TOK_NOT_IN
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%left '+' '-'
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%left '*' '/' '%'
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%left TOK_INCR TOK_DECR
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%right '!'
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%left '$' '[' ']' '(' ')' TOK_HAS_FIELD TOK_HAS_ATTR
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%type <b> opt_no_test opt_no_test_block
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%type <str> TOK_ID TOK_PATTERN_TEXT single_pattern
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%type <id> local_id global_id def_global_id event_id global_or_event_id resolve_id begin_func
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%type <id_l> local_id_list
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%type <ic> init_class
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%type <expr> opt_init
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%type <val> TOK_CONSTANT
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%type <re> pattern
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%type <expr> expr init anonymous_function
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%type <event_expr> event
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%type <stmt> stmt stmt_list func_body for_head
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%type <type> type opt_type enum_body
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%type <func_type> func_hdr func_params
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%type <type_l> type_list
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%type <type_decl> type_decl formal_args_decl
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%type <type_decl_l> type_decl_list formal_args_decl_list
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%type <record> formal_args
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%type <list> expr_list opt_expr_list
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%type <c_case> case
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%type <case_l> case_list
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%type <attr> attr
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%type <attr_l> attr_list opt_attr
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%{
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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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#include "input.h"
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#include "Expr.h"
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#include "Stmt.h"
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#include "Var.h"
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/* #include "analyzer/protocol/dns/DNS.h" */
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#include "RE.h"
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#include "Scope.h"
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#include "Reporter.h"
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#include "Brofiler.h"
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#include "broxygen/Manager.h"
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#include <set>
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#include <string>
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extern const char* filename; // Absolute path of file currently being parsed.
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YYLTYPE GetCurrentLocation();
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extern int yyerror(const char[]);
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extern int brolex();
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#define YYLLOC_DEFAULT(Current, Rhs, N) \
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(Current) = (Rhs)[(N)];
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/*
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* Part of the module facility: while parsing, keep track of which
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* module to put things in.
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*/
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string current_module = GLOBAL_MODULE_NAME;
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bool is_export = false; // true if in an export {} block
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/*
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* When parsing an expression for the debugger, where to put the result
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* (obviously not reentrant).
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*/
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extern Expr* g_curr_debug_expr;
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extern bool in_debug;
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extern const char* g_curr_debug_error;
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#define YYLTYPE yyltype
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static int in_hook = 0;
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int in_init = 0;
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int in_record = 0;
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bool resolving_global_ID = false;
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bool defining_global_ID = false;
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ID* func_id = 0;
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EnumType *cur_enum_type = 0;
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static ID* cur_decl_type_id = 0;
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static void parser_new_enum (void)
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{
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/* Starting a new enum definition. */
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assert(cur_enum_type == NULL);
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cur_enum_type = new EnumType();
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}
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static void parser_redef_enum (ID *id)
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{
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/* Redef an enum. id points to the enum to be redefined.
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Let cur_enum_type point to it. */
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assert(cur_enum_type == NULL);
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if ( ! id->Type() )
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id->Error("unknown identifier");
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else
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{
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cur_enum_type = id->Type()->AsEnumType();
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if ( ! cur_enum_type )
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id->Error("not an enum");
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}
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}
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static type_decl_list* copy_type_decl_list(type_decl_list* tdl)
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{
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if ( ! tdl )
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return 0;
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type_decl_list* rval = new type_decl_list();
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loop_over_list(*tdl, i)
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{
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TypeDecl* td = (*tdl)[i];
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rval->append(new TypeDecl(*td));
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}
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return rval;
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}
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static attr_list* copy_attr_list(attr_list* al)
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{
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if ( ! al )
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return 0;
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attr_list* rval = new attr_list();
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loop_over_list(*al, i)
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{
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Attr* a = (*al)[i];
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::Ref(a);
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rval->append(a);
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}
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return rval;
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}
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static void extend_record(ID* id, type_decl_list* fields, attr_list* attrs)
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{
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set<BroType*> types = type_aliases[id->Name()];
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if ( types.empty() )
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{
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id->Error("failed to redef record: no types found in alias map");
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return;
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}
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for ( set<BroType*>::const_iterator it = types.begin(); it != types.end(); )
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{
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RecordType* add_to = (*it)->AsRecordType();
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const char* error = 0;
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++it;
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if ( it == types.end() )
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error = add_to->AddFields(fields, attrs);
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else
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error = add_to->AddFields(copy_type_decl_list(fields),
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copy_attr_list(attrs));
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if ( error )
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{
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id->Error(error);
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break;
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}
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}
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}
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%}
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%union {
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bool b;
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char* str;
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ID* id;
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id_list* id_l;
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init_class ic;
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Val* val;
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RE_Matcher* re;
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Expr* expr;
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EventExpr* event_expr;
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Stmt* stmt;
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ListExpr* list;
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BroType* type;
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RecordType* record;
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FuncType* func_type;
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TypeList* type_l;
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TypeDecl* type_decl;
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type_decl_list* type_decl_l;
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Case* c_case;
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case_list* case_l;
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Attr* attr;
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attr_list* attr_l;
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attr_tag attrtag;
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}
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%%
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bro:
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decl_list stmt_list
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{
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if ( optimize )
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$2 = $2->Simplify();
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if ( stmts )
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stmts->AsStmtList()->Stmts().append($2);
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else
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stmts = $2;
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// Any objects creates from hereon out should not
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// have file positions associated with them.
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set_location(no_location);
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}
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/* Silly way of allowing the debugger to call yyparse()
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* on an expr rather than a file.
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*/
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TOK_DEBUG { in_debug = true; } expr
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{
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g_curr_debug_expr = $3;
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}
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;
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decl_list:
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decl_list decl
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;
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expr:
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'(' expr ')'
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{
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set_location(@1, @3);
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$$ = $2; $$->MarkParen();
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}
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| TOK_COPY '(' expr ')'
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{
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set_location(@1, @4);
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$$ = new CloneExpr($3);
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}
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| TOK_INCR expr
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{
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set_location(@1, @2);
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$$ = new IncrExpr(EXPR_INCR, $2);
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}
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| TOK_DECR expr
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{
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set_location(@1, @2);
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$$ = new IncrExpr(EXPR_DECR, $2);
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}
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| '!' expr
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{
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set_location(@1, @2);
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$$ = new NotExpr($2);
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}
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| '-' expr %prec '!'
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{
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set_location(@1, @2);
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$$ = new NegExpr($2);
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}
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| '+' expr %prec '!'
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{
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set_location(@1, @2);
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$$ = new PosExpr($2);
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}
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| expr '+' expr
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{
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set_location(@1, @3);
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$$ = new AddExpr($1, $3);
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}
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| expr TOK_ADD_TO expr
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{
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set_location(@1, @3);
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$$ = new AddToExpr($1, $3);
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}
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| expr '-' expr
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{
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set_location(@1, @3);
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$$ = new SubExpr($1, $3);
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}
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| expr TOK_REMOVE_FROM expr
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{
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set_location(@1, @3);
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$$ = new RemoveFromExpr($1, $3);
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}
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| expr '*' expr
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{
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set_location(@1, @3);
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$$ = new TimesExpr($1, $3);
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}
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| expr '/' expr
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{
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set_location(@1, @3);
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$$ = new DivideExpr($1, $3);
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}
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| expr '%' expr
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{
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set_location(@1, @3);
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$$ = new ModExpr($1, $3);
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}
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| expr TOK_AND expr
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{
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set_location(@1, @3);
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$$ = new BoolExpr(EXPR_AND, $1, $3);
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}
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| expr TOK_OR expr
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{
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set_location(@1, @3);
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$$ = new BoolExpr(EXPR_OR, $1, $3);
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}
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| expr TOK_EQ expr
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{
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set_location(@1, @3);
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$$ = new EqExpr(EXPR_EQ, $1, $3);
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}
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| expr TOK_NE expr
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{
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set_location(@1, @3);
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$$ = new EqExpr(EXPR_NE, $1, $3);
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}
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| expr '<' expr
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{
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set_location(@1, @3);
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$$ = new RelExpr(EXPR_LT, $1, $3);
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}
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| expr TOK_LE expr
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{
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set_location(@1, @3);
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$$ = new RelExpr(EXPR_LE, $1, $3);
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}
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| expr '>' expr
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{
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set_location(@1, @3);
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$$ = new RelExpr(EXPR_GT, $1, $3);
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}
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| expr TOK_GE expr
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{
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set_location(@1, @3);
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$$ = new RelExpr(EXPR_GE, $1, $3);
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}
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| expr '?' expr ':' expr
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{
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set_location(@1, @5);
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$$ = new CondExpr($1, $3, $5);
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}
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| expr '=' expr
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{
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set_location(@1, @3);
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$$ = get_assign_expr($1, $3, in_init);
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}
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| TOK_LOCAL local_id '=' expr
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{
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set_location(@2, @4);
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$$ = add_and_assign_local($2, $4, new Val(1, TYPE_BOOL));
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}
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| expr '[' expr_list ']'
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{
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set_location(@1, @4);
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$$ = new IndexExpr($1, $3);
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}
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| expr '[' expr ':' expr ']'
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{
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set_location(@1, @6);
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ListExpr* le = new ListExpr($3);
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le->Append($5);
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$$ = new IndexExpr($1, le, true);
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}
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| expr '$' TOK_ID
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{
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set_location(@1, @3);
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$$ = new FieldExpr($1, $3);
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}
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| '$' TOK_ID '=' expr
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{
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set_location(@1, @4);
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$$ = new FieldAssignExpr($2, $4);
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}
|
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|
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| '$' TOK_ID func_params '='
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{
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func_id = current_scope()->GenerateTemporary("anonymous-function");
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func_id->SetInferReturnType(true);
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begin_func(func_id,
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current_module.c_str(),
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FUNC_FLAVOR_FUNCTION,
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0,
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$3);
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}
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func_body
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{
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$$ = new FieldAssignExpr($2, new ConstExpr(func_id->ID_Val()));
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}
|
|
|
|
| expr TOK_IN expr
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{
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set_location(@1, @3);
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$$ = new InExpr($1, $3);
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}
|
|
|
|
| expr TOK_NOT_IN expr
|
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{
|
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set_location(@1, @3);
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$$ = new NotExpr(new InExpr($1, $3));
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}
|
|
|
|
| '[' expr_list ']'
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{
|
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set_location(@1, @3);
|
|
|
|
bool is_record_ctor = true;
|
|
|
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// If every expression in the list is a field assignment,
|
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// then treat it as a record constructor, else as a list
|
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// used for an initializer.
|
|
|
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for ( int i = 0; i < $2->Exprs().length(); ++i )
|
|
{
|
|
if ( $2->Exprs()[i]->Tag() != EXPR_FIELD_ASSIGN )
|
|
{
|
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is_record_ctor = false;
|
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break;
|
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}
|
|
}
|
|
|
|
if ( is_record_ctor )
|
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$$ = new RecordConstructorExpr($2);
|
|
else
|
|
$$ = $2;
|
|
}
|
|
|
|
| '[' ']'
|
|
{
|
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// We interpret this as an empty record constructor.
|
|
$$ = 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);
|
|
}
|
|
|
|
| expr '('
|
|
{
|
|
if ( $1->Tag() == EXPR_NAME && $1->Type()->IsTable() )
|
|
++in_init;
|
|
}
|
|
|
|
opt_expr_list
|
|
{
|
|
if ( $1->Tag() == EXPR_NAME && $1->Type()->IsTable() )
|
|
--in_init;
|
|
}
|
|
|
|
')'
|
|
{
|
|
set_location(@1, @6);
|
|
|
|
BroType* ctor_type = 0;
|
|
|
|
if ( $1->Tag() == EXPR_NAME &&
|
|
(ctor_type = $1->AsNameExpr()->Id()->AsType()) )
|
|
{
|
|
switch ( ctor_type->Tag() ) {
|
|
case TYPE_RECORD:
|
|
$$ = new RecordConstructorExpr($4, ctor_type);
|
|
break;
|
|
|
|
case TYPE_TABLE:
|
|
if ( ctor_type->IsTable() )
|
|
$$ = new TableConstructorExpr($4, 0, ctor_type);
|
|
else
|
|
$$ = new SetConstructorExpr($4, 0, ctor_type);
|
|
|
|
break;
|
|
|
|
case TYPE_VECTOR:
|
|
$$ = new VectorConstructorExpr($4, ctor_type);
|
|
break;
|
|
|
|
default:
|
|
$1->Error("constructor type not implemented");
|
|
YYERROR;
|
|
}
|
|
}
|
|
|
|
else
|
|
$$ = new CallExpr($1, $4, in_hook > 0);
|
|
}
|
|
|
|
| TOK_HOOK { ++in_hook; } expr
|
|
{
|
|
--in_hook;
|
|
set_location(@1, @3);
|
|
if ( $3->Tag() != EXPR_CALL )
|
|
$3->Error("not a valid hook call expression");
|
|
$$ = $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());
|
|
$$ = new NameExpr(id);
|
|
}
|
|
|
|
else if ( id->IsEnumConst() )
|
|
{
|
|
EnumType* t = id->Type()->AsEnumType();
|
|
int intval = t->Lookup(id->ModuleName(),
|
|
id->Name());
|
|
if ( intval < 0 )
|
|
reporter->InternalError("enum value not found for %s", id->Name());
|
|
$$ = new ConstExpr(new EnumVal(intval, t));
|
|
}
|
|
else
|
|
$$ = new NameExpr(id);
|
|
}
|
|
}
|
|
|
|
| TOK_CONSTANT
|
|
{
|
|
set_location(@1);
|
|
$$ = new ConstExpr($1);
|
|
}
|
|
|
|
| pattern
|
|
{
|
|
set_location(@1);
|
|
$1->Compile();
|
|
$$ = new ConstExpr(new PatternVal($1));
|
|
}
|
|
|
|
| '|' expr '|'
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = 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(); }
|
|
;
|
|
|
|
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
|
|
{
|
|
$$ = cur_enum_type;
|
|
cur_enum_type = NULL;
|
|
}
|
|
|
|
| enum_body_list ','
|
|
{
|
|
$$ = cur_enum_type;
|
|
cur_enum_type = NULL;
|
|
}
|
|
;
|
|
|
|
enum_body_list:
|
|
enum_body_elem
|
|
|
|
| enum_body_list ',' enum_body_elem
|
|
;
|
|
|
|
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 )
|
|
reporter->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.)
|
|
*/
|
|
reporter->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_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 '{'
|
|
{ ++in_record; }
|
|
type_decl_list
|
|
{ --in_record; }
|
|
'}'
|
|
{
|
|
set_location(@1, @5);
|
|
$$ = new RecordType($4);
|
|
}
|
|
|
|
| TOK_UNION '{' type_list '}'
|
|
{
|
|
set_location(@1, @4);
|
|
reporter->Error("union type not implemented");
|
|
$$ = 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();
|
|
reporter->Error("list type not implemented");
|
|
$$ = 0;
|
|
}
|
|
|
|
| TOK_LIST TOK_OF type
|
|
{
|
|
set_location(@1);
|
|
// $$ = new TypeList($3);
|
|
reporter->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, FUNC_FLAVOR_EVENT);
|
|
}
|
|
|
|
| TOK_HOOK '(' formal_args ')'
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new FuncType($3, base_type(TYPE_BOOL), FUNC_FLAVOR_HOOK);
|
|
}
|
|
|
|
| TOK_FILE TOK_OF type
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new FileType($3);
|
|
}
|
|
|
|
| TOK_FILE
|
|
{
|
|
set_location(@1);
|
|
$$ = new FileType(base_type(TYPE_STRING));
|
|
}
|
|
|
|
| TOK_OPAQUE TOK_OF TOK_ID
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new OpaqueType($3);
|
|
}
|
|
|
|
| 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, @4);
|
|
$$ = new TypeDecl($3, $1, $4, (in_record > 0));
|
|
|
|
if ( in_record > 0 )
|
|
broxygen_mgr->RecordField(cur_decl_type_id, $$, ::filename);
|
|
}
|
|
;
|
|
|
|
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;
|
|
broxygen_mgr->ModuleUsage(::filename, current_module);
|
|
}
|
|
|
|
| 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);
|
|
broxygen_mgr->Identifier($2);
|
|
}
|
|
|
|
| TOK_CONST def_global_id opt_type init_class opt_init opt_attr ';'
|
|
{
|
|
add_global($2, $3, $4, $5, $6, VAR_CONST);
|
|
broxygen_mgr->Identifier($2);
|
|
}
|
|
|
|
| TOK_REDEF global_id opt_type init_class opt_init opt_attr ';'
|
|
{
|
|
add_global($2, $3, $4, $5, $6, VAR_REDEF);
|
|
broxygen_mgr->Redef($2, ::filename);
|
|
}
|
|
|
|
| TOK_REDEF TOK_ENUM global_id TOK_ADD_TO
|
|
'{' { parser_redef_enum($3); } enum_body '}' ';'
|
|
{
|
|
// Broxygen already grabbed new enum IDs as the type created them.
|
|
}
|
|
|
|
| TOK_REDEF TOK_RECORD global_id { cur_decl_type_id = $3; } TOK_ADD_TO
|
|
'{' { ++in_record; } type_decl_list { --in_record; } '}' opt_attr ';'
|
|
{
|
|
cur_decl_type_id = 0;
|
|
|
|
if ( ! $3->Type() )
|
|
$3->Error("unknown identifier");
|
|
else
|
|
extend_record($3, $8, $11);
|
|
}
|
|
|
|
| TOK_TYPE global_id ':'
|
|
{ cur_decl_type_id = $2; broxygen_mgr->StartType($2); }
|
|
type opt_attr ';'
|
|
{
|
|
cur_decl_type_id = 0;
|
|
add_type($2, $5, $6);
|
|
broxygen_mgr->Identifier($2);
|
|
}
|
|
|
|
| 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);
|
|
$$ = $3;
|
|
broxygen_mgr->Identifier($2);
|
|
}
|
|
| TOK_EVENT event_id func_params
|
|
{
|
|
begin_func($2, current_module.c_str(),
|
|
FUNC_FLAVOR_EVENT, 0, $3);
|
|
$$ = $3;
|
|
}
|
|
| TOK_HOOK def_global_id func_params
|
|
{
|
|
$3->ClearYieldType(FUNC_FLAVOR_HOOK);
|
|
$3->SetYieldType(base_type(TYPE_BOOL));
|
|
begin_func($2, current_module.c_str(),
|
|
FUNC_FLAVOR_HOOK, 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, FUNC_FLAVOR_FUNCTION); }
|
|
| '(' formal_args ')'
|
|
{ $$ = new FuncType($2, base_type(TYPE_VOID), FUNC_FLAVOR_FUNCTION); }
|
|
;
|
|
|
|
opt_type:
|
|
':' type
|
|
{ $$ = $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
|
|
{ $$ = new Attr(ATTR_ENCRYPT, $3); }
|
|
| TOK_ATTR_RAW_OUTPUT
|
|
{ $$ = new Attr(ATTR_RAW_OUTPUT); }
|
|
| TOK_ATTR_MERGEABLE
|
|
{ $$ = new Attr(ATTR_MERGEABLE); }
|
|
| TOK_ATTR_PRIORITY '=' expr
|
|
{ $$ = new Attr(ATTR_PRIORITY, $3); }
|
|
| TOK_ATTR_TYPE_COLUMN '=' expr
|
|
{ $$ = new Attr(ATTR_TYPE_COLUMN, $3); }
|
|
| TOK_ATTR_LOG
|
|
{ $$ = new Attr(ATTR_LOG); }
|
|
| TOK_ATTR_ERROR_HANDLER
|
|
{ $$ = new Attr(ATTR_ERROR_HANDLER); }
|
|
;
|
|
|
|
stmt:
|
|
'{' opt_no_test_block stmt_list '}'
|
|
{
|
|
set_location(@1, @4);
|
|
$$ = $3;
|
|
if ( $2 )
|
|
brofiler.DecIgnoreDepth();
|
|
}
|
|
|
|
| TOK_PRINT expr_list ';' opt_no_test
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new PrintStmt($2);
|
|
if ( ! $4 )
|
|
brofiler.AddStmt($$);
|
|
}
|
|
|
|
| TOK_EVENT event ';' opt_no_test
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new EventStmt($2);
|
|
if ( ! $4 )
|
|
brofiler.AddStmt($$);
|
|
}
|
|
|
|
| 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);
|
|
$$ = new SwitchStmt($2, $4);
|
|
}
|
|
|
|
| for_head stmt
|
|
{
|
|
$1->AsForStmt()->AddBody($2);
|
|
}
|
|
|
|
| TOK_NEXT ';' opt_no_test
|
|
{
|
|
set_location(@1, @2);
|
|
$$ = new NextStmt;
|
|
if ( ! $3 )
|
|
brofiler.AddStmt($$);
|
|
}
|
|
|
|
| TOK_BREAK ';' opt_no_test
|
|
{
|
|
set_location(@1, @2);
|
|
$$ = new BreakStmt;
|
|
if ( ! $3 )
|
|
brofiler.AddStmt($$);
|
|
}
|
|
|
|
| TOK_FALLTHROUGH ';' opt_no_test
|
|
{
|
|
set_location(@1, @2);
|
|
$$ = new FallthroughStmt;
|
|
if ( ! $3 )
|
|
brofiler.AddStmt($$);
|
|
}
|
|
|
|
| TOK_RETURN ';' opt_no_test
|
|
{
|
|
set_location(@1, @2);
|
|
$$ = new ReturnStmt(0);
|
|
if ( ! $3 )
|
|
brofiler.AddStmt($$);
|
|
}
|
|
|
|
| TOK_RETURN expr ';' opt_no_test
|
|
{
|
|
set_location(@1, @2);
|
|
$$ = new ReturnStmt($2);
|
|
if ( ! $4 )
|
|
brofiler.AddStmt($$);
|
|
}
|
|
|
|
| TOK_ADD expr ';' opt_no_test
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new AddStmt($2);
|
|
if ( ! $4 )
|
|
brofiler.AddStmt($$);
|
|
}
|
|
|
|
| TOK_DELETE expr ';' opt_no_test
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new DelStmt($2);
|
|
if ( ! $4 )
|
|
brofiler.AddStmt($$);
|
|
}
|
|
|
|
| TOK_LOCAL local_id opt_type init_class opt_init opt_attr ';' opt_no_test
|
|
{
|
|
set_location(@1, @7);
|
|
$$ = add_local($2, $3, $4, $5, $6, VAR_REGULAR);
|
|
if ( ! $8 )
|
|
brofiler.AddStmt($$);
|
|
}
|
|
|
|
| TOK_CONST local_id opt_type init_class opt_init opt_attr ';' opt_no_test
|
|
{
|
|
set_location(@1, @6);
|
|
$$ = add_local($2, $3, $4, $5, $6, VAR_CONST);
|
|
if ( ! $8 )
|
|
brofiler.AddStmt($$);
|
|
}
|
|
|
|
| TOK_WHEN '(' expr ')' stmt
|
|
{
|
|
set_location(@3, @5);
|
|
$$ = new WhenStmt($3, $5, 0, 0, false);
|
|
}
|
|
|
|
| TOK_WHEN '(' expr ')' stmt TOK_TIMEOUT expr '{' opt_no_test_block stmt_list '}'
|
|
{
|
|
set_location(@3, @9);
|
|
$$ = new WhenStmt($3, $5, $10, $7, false);
|
|
if ( $9 )
|
|
brofiler.DecIgnoreDepth();
|
|
}
|
|
|
|
|
|
| TOK_RETURN TOK_WHEN '(' expr ')' stmt
|
|
{
|
|
set_location(@4, @6);
|
|
$$ = new WhenStmt($4, $6, 0, 0, true);
|
|
}
|
|
|
|
| TOK_RETURN TOK_WHEN '(' expr ')' stmt TOK_TIMEOUT expr '{' opt_no_test_block stmt_list '}'
|
|
{
|
|
set_location(@4, @10);
|
|
$$ = new WhenStmt($4, $6, $11, $8, true);
|
|
if ( $10 )
|
|
brofiler.DecIgnoreDepth();
|
|
}
|
|
|
|
| expr ';' opt_no_test
|
|
{
|
|
set_location(@1, @2);
|
|
$$ = new ExprStmt($1);
|
|
if ( ! $3 )
|
|
brofiler.AddStmt($$);
|
|
}
|
|
|
|
| ';'
|
|
{
|
|
set_location(@1, @1);
|
|
$$ = 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 ( ! $$ )
|
|
reporter->Error("identifier not defined: %s", $1);
|
|
|
|
delete [] $1;
|
|
}
|
|
;
|
|
|
|
opt_no_test:
|
|
TOK_NO_TEST
|
|
{ $$ = true; }
|
|
|
|
|
{ $$ = false; }
|
|
|
|
opt_no_test_block:
|
|
TOK_NO_TEST
|
|
{ $$ = true; brofiler.IncIgnoreDepth(); }
|
|
|
|
|
{ $$ = false; }
|
|
|
|
%%
|
|
|
|
int yyerror(const char msg[])
|
|
{
|
|
char* msgbuf = new char[strlen(msg) + strlen(last_tok) + 128];
|
|
|
|
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);
|
|
|
|
if ( in_debug )
|
|
g_curr_debug_error = copy_string(msg);
|
|
|
|
reporter->Error("%s", msgbuf);
|
|
|
|
return 0;
|
|
}
|