mirror of
https://github.com/zeek/zeek.git
synced 2025-10-02 06:38:20 +00:00
1929 lines
47 KiB
Text
1929 lines
47 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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// Switching parser table type fixes ambiguity problems.
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%define lr.type ielr
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%expect 111
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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_OPTION 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_END 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_WHILE TOK_AS TOK_IS
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%token TOK_ATTR_ADD_FUNC TOK_ATTR_DEFAULT TOK_ATTR_OPTIONAL TOK_ATTR_REDEF
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%token 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_RAW_OUTPUT TOK_ATTR_ON_CHANGE
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%token TOK_ATTR_PRIORITY TOK_ATTR_LOG TOK_ATTR_ERROR_HANDLER
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%token TOK_ATTR_TYPE_COLUMN TOK_ATTR_DEPRECATED
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%token TOK_DEBUG
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%token TOK_NO_TEST
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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_OR
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%left TOK_AND_AND
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%nonassoc TOK_HOOK
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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 '&'
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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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%nonassoc TOK_AS TOK_IS
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%type <b> opt_no_test opt_no_test_block TOK_PATTERN_END
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%type <str> TOK_ID TOK_PATTERN_TEXT
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%type <id> local_id global_id def_global_id event_id global_or_event_id resolve_id begin_func case_type
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%type <id_l> local_id_list case_type_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 <expr> expr opt_expr init anonymous_function lambda_body index_slice opt_deprecated
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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 "BroList.h"
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#include "Desc.h"
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#include "Expr.h"
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#include "Func.h"
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#include "Stmt.h"
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#include "Val.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 "zeekygen/Manager.h"
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#include "module_util.h"
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#include "IntrusivePtr.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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extern const char* last_filename; // Absolute path of last file parsed.
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extern const char* last_tok_filename;
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extern const char* last_last_tok_filename;
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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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std::string zeek::detail::current_module = GLOBAL_MODULE_NAME;
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std::string& current_module = zeek::detail::current_module;
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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 zeek::detail::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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std::vector<int> saved_in_init;
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static Location func_hdr_location;
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zeek::EnumType* cur_enum_type = nullptr;
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static zeek::detail::ID* cur_decl_type_id = nullptr;
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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 == nullptr);
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if ( cur_decl_type_id )
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cur_enum_type = new zeek::EnumType(cur_decl_type_id->Name());
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else
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reporter->FatalError("incorrect syntax for enum type declaration");
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}
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static void parser_redef_enum (zeek::detail::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 == nullptr);
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// abort on errors; enums need to be accessible to continue parsing
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if ( ! id->GetType() )
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reporter->FatalError("unknown enum identifier \"%s\"", id->Name());
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else
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{
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if ( ! id->GetType() || id->GetType()->Tag() != zeek::TYPE_ENUM )
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reporter->FatalError("identifier \"%s\" is not an enum", id->Name());
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cur_enum_type = id->GetType()->AsEnumType();
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}
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}
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static void extend_record(zeek::detail::ID* id, std::unique_ptr<zeek::type_decl_list> fields,
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std::unique_ptr<std::vector<zeek::detail::AttrPtr>> attrs)
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{
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std::set<zeek::Type*> types = zeek::Type::GetAliases(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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bool add_log_attr = false;
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if ( attrs )
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for ( const auto& at : *attrs )
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if ( at->Tag() == zeek::detail::ATTR_LOG )
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{
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add_log_attr = true;
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break;
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}
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for ( auto t : types )
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{
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auto error = t->AsRecordType()->AddFields(*fields, add_log_attr);
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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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static zeek::detail::AttributesPtr
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make_attributes(std::vector<zeek::detail::AttrPtr>* attrs,
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zeek::TypePtr t, bool in_record, bool is_global)
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{
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if ( ! attrs )
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return nullptr;
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auto rval = zeek::make_intrusive<zeek::detail::Attributes>(std::move(*attrs), std::move(t),
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in_record, is_global);
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delete attrs;
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return rval;
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}
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static bool expr_is_table_type_name(const zeek::detail::Expr* expr)
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{
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if ( expr->Tag() != zeek::detail::EXPR_NAME )
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return false;
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const auto& type = expr->GetType();
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if ( type->IsTable() )
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return true;
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if ( type->Tag() == zeek::TYPE_TYPE )
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return type->AsTypeType()->GetType()->IsTable();
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return false;
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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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zeek::detail::ID* id;
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id_list* id_l;
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zeek::detail::InitClass ic;
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zeek::Val* val;
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RE_Matcher* re;
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zeek::detail::Expr* expr;
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zeek::detail::EventExpr* event_expr;
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zeek::detail::Stmt* stmt;
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zeek::detail::ListExpr* list;
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zeek::Type* type;
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zeek::RecordType* record;
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zeek::FuncType* func_type;
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zeek::TypeList* type_l;
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zeek::TypeDecl* type_decl;
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zeek::type_decl_list* type_decl_l;
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zeek::detail::Case* c_case;
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zeek::detail::case_list* case_l;
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zeek::detail::Attr* attr;
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std::vector<zeek::detail::AttrPtr>* attr_l;
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zeek::detail::AttrTag 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 ( stmts )
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stmts->AsStmtList()->Stmts().push_back($2);
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else
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stmts = $2;
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// Any objects creates from here on 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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opt_expr:
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expr
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{ $$ = $1; }
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{ $$ = 0; }
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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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$$ = new zeek::detail::CloneExpr({zeek::AdoptRef{}, $3});
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}
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| TOK_INCR expr
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{
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set_location(@1, @2);
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$$ = new zeek::detail::IncrExpr(zeek::detail::EXPR_INCR, {zeek::AdoptRef{}, $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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$$ = new zeek::detail::IncrExpr(zeek::detail::EXPR_DECR, {zeek::AdoptRef{}, $2});
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}
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| '!' expr
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{
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set_location(@1, @2);
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$$ = new zeek::detail::NotExpr({zeek::AdoptRef{}, $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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$$ = new zeek::detail::ComplementExpr({zeek::AdoptRef{}, $2});
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}
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| '-' expr %prec '!'
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{
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set_location(@1, @2);
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$$ = new zeek::detail::NegExpr({zeek::AdoptRef{}, $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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$$ = new zeek::detail::PosExpr({zeek::AdoptRef{}, $2});
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}
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| expr '+' expr
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{
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set_location(@1, @3);
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$$ = new zeek::detail::AddExpr({zeek::AdoptRef{}, $1}, {zeek::AdoptRef{}, $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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$$ = new zeek::detail::AddToExpr({zeek::AdoptRef{}, $1}, {zeek::AdoptRef{}, $3});
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}
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| expr '-' expr
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{
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set_location(@1, @3);
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$$ = new zeek::detail::SubExpr({zeek::AdoptRef{}, $1}, {zeek::AdoptRef{}, $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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$$ = new zeek::detail::RemoveFromExpr({zeek::AdoptRef{}, $1}, {zeek::AdoptRef{}, $3});
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}
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| expr '*' expr
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{
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set_location(@1, @3);
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$$ = new zeek::detail::TimesExpr({zeek::AdoptRef{}, $1}, {zeek::AdoptRef{}, $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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$$ = new zeek::detail::DivideExpr({zeek::AdoptRef{}, $1}, {zeek::AdoptRef{}, $3});
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}
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| expr '%' expr
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{
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set_location(@1, @3);
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$$ = new zeek::detail::ModExpr({zeek::AdoptRef{}, $1}, {zeek::AdoptRef{}, $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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$$ = new zeek::detail::BitExpr(zeek::detail::EXPR_AND, {zeek::AdoptRef{}, $1}, {zeek::AdoptRef{}, $3});
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}
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| expr '|' expr
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{
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set_location(@1, @3);
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$$ = new zeek::detail::BitExpr(zeek::detail::EXPR_OR, {zeek::AdoptRef{}, $1}, {zeek::AdoptRef{}, $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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$$ = new zeek::detail::BitExpr(zeek::detail::EXPR_XOR, {zeek::AdoptRef{}, $1}, {zeek::AdoptRef{}, $3});
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}
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| expr TOK_AND_AND expr
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{
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set_location(@1, @3);
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$$ = new zeek::detail::BoolExpr(zeek::detail::EXPR_AND_AND, {zeek::AdoptRef{}, $1}, {zeek::AdoptRef{}, $3});
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}
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| expr TOK_OR_OR expr
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{
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set_location(@1, @3);
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$$ = new zeek::detail::BoolExpr(zeek::detail::EXPR_OR_OR, {zeek::AdoptRef{}, $1}, {zeek::AdoptRef{}, $3});
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}
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| expr TOK_EQ expr
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{
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set_location(@1, @3);
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$$ = new zeek::detail::EqExpr(zeek::detail::EXPR_EQ, {zeek::AdoptRef{}, $1}, {zeek::AdoptRef{}, $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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$$ = new zeek::detail::EqExpr(zeek::detail::EXPR_NE, {zeek::AdoptRef{}, $1}, {zeek::AdoptRef{}, $3});
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}
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| expr '<' expr
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{
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set_location(@1, @3);
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$$ = new zeek::detail::RelExpr(zeek::detail::EXPR_LT, {zeek::AdoptRef{}, $1}, {zeek::AdoptRef{}, $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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$$ = new zeek::detail::RelExpr(zeek::detail::EXPR_LE, {zeek::AdoptRef{}, $1}, {zeek::AdoptRef{}, $3});
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}
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| expr '>' expr
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{
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set_location(@1, @3);
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$$ = new zeek::detail::RelExpr(zeek::detail::EXPR_GT, {zeek::AdoptRef{}, $1}, {zeek::AdoptRef{}, $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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$$ = new zeek::detail::RelExpr(zeek::detail::EXPR_GE, {zeek::AdoptRef{}, $1}, {zeek::AdoptRef{}, $3});
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}
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| expr '?' expr ':' expr
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{
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set_location(@1, @5);
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$$ = new zeek::detail::CondExpr({zeek::AdoptRef{}, $1}, {zeek::AdoptRef{}, $3}, {zeek::AdoptRef{}, $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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if ( $1->Tag() == zeek::detail::EXPR_INDEX && $1->AsIndexExpr()->IsSlice() )
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reporter->Error("index slice assignment may not be used"
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" in arbitrary expression contexts, only"
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" as a statement");
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$$ = zeek::detail::get_assign_expr({zeek::AdoptRef{}, $1}, {zeek::AdoptRef{}, $3}, in_init).release();
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}
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| TOK_LOCAL local_id '=' expr
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{
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set_location(@2, @4);
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$$ = add_and_assign_local({zeek::AdoptRef{}, $2}, {zeek::AdoptRef{}, $4},
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val_mgr->True()).release();
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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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$$ = new zeek::detail::IndexExpr({zeek::AdoptRef{}, $1}, {zeek::AdoptRef{}, $3});
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}
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| index_slice
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| expr '$' TOK_ID
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{
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set_location(@1, @3);
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$$ = new zeek::detail::FieldExpr({zeek::AdoptRef{}, $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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$$ = new zeek::detail::FieldAssignExpr($2, {zeek::AdoptRef{}, $4});
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}
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| '$' TOK_ID func_params '='
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{
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func_hdr_location = @1;
|
|
auto func_id = zeek::detail::current_scope()->GenerateTemporary("anonymous-function");
|
|
func_id->SetInferReturnType(true);
|
|
begin_func(std::move(func_id), zeek::detail::current_module.c_str(),
|
|
zeek::FUNC_FLAVOR_FUNCTION, false,
|
|
{zeek::AdoptRef{}, $3});
|
|
}
|
|
lambda_body
|
|
{
|
|
$$ = new zeek::detail::FieldAssignExpr($2, zeek::IntrusivePtr{zeek::AdoptRef{}, $6});
|
|
}
|
|
|
|
| expr TOK_IN expr
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new zeek::detail::InExpr({zeek::AdoptRef{}, $1}, {zeek::AdoptRef{}, $3});
|
|
}
|
|
|
|
| expr TOK_NOT_IN expr
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new zeek::detail::NotExpr(zeek::make_intrusive<zeek::detail::InExpr>(
|
|
zeek::detail::ExprPtr{zeek::AdoptRef{}, $1},
|
|
zeek::detail::ExprPtr{zeek::AdoptRef{}, $3}));
|
|
}
|
|
|
|
| '[' expr_list ']'
|
|
{
|
|
set_location(@1, @3);
|
|
|
|
bool is_record_ctor = true;
|
|
|
|
// If every expression in the list is a field assignment,
|
|
// then treat it as a record constructor, else as a list
|
|
// used for an initializer.
|
|
|
|
for ( int i = 0; i < $2->Exprs().length(); ++i )
|
|
{
|
|
if ( $2->Exprs()[i]->Tag() != zeek::detail::EXPR_FIELD_ASSIGN )
|
|
{
|
|
is_record_ctor = false;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ( is_record_ctor )
|
|
$$ = new zeek::detail::RecordConstructorExpr({zeek::AdoptRef{}, $2});
|
|
else
|
|
$$ = $2;
|
|
}
|
|
|
|
| '[' ']'
|
|
{
|
|
// We interpret this as an empty record constructor.
|
|
$$ = new zeek::detail::RecordConstructorExpr(zeek::make_intrusive<zeek::detail::ListExpr>());
|
|
}
|
|
|
|
|
|
| TOK_RECORD '(' expr_list ')'
|
|
{
|
|
set_location(@1, @4);
|
|
$$ = new zeek::detail::RecordConstructorExpr({zeek::AdoptRef{}, $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);
|
|
std::unique_ptr<std::vector<zeek::detail::AttrPtr>> attrs{$7};
|
|
$$ = new zeek::detail::TableConstructorExpr({zeek::AdoptRef{}, $4}, std::move(attrs));
|
|
}
|
|
|
|
| TOK_SET '(' opt_expr_list ')' opt_attr
|
|
{
|
|
set_location(@1, @4);
|
|
std::unique_ptr<std::vector<zeek::detail::AttrPtr>> attrs{$5};
|
|
$$ = new zeek::detail::SetConstructorExpr({zeek::AdoptRef{}, $3}, std::move(attrs));
|
|
}
|
|
|
|
| TOK_VECTOR '(' opt_expr_list ')'
|
|
{
|
|
set_location(@1, @4);
|
|
$$ = new zeek::detail::VectorConstructorExpr({zeek::AdoptRef{}, $3});
|
|
}
|
|
|
|
| expr '('
|
|
{
|
|
if ( expr_is_table_type_name($1) )
|
|
++in_init;
|
|
}
|
|
|
|
opt_expr_list
|
|
{
|
|
if ( expr_is_table_type_name($1) )
|
|
--in_init;
|
|
}
|
|
|
|
')'
|
|
{
|
|
set_location(@1, @6);
|
|
|
|
if ( $1->Tag() == zeek::detail::EXPR_NAME && $1->AsNameExpr()->Id()->IsType() )
|
|
{
|
|
const auto& ctor_type = $1->AsNameExpr()->Id()->GetType();
|
|
|
|
switch ( ctor_type->Tag() ) {
|
|
case zeek::TYPE_RECORD:
|
|
{
|
|
auto rce = zeek::make_intrusive<zeek::detail::RecordConstructorExpr>(
|
|
zeek::detail::ListExprPtr{zeek::AdoptRef{}, $4});
|
|
auto rt = zeek::cast_intrusive<zeek::RecordType>(ctor_type);
|
|
$$ = new zeek::detail::RecordCoerceExpr(std::move(rce), std::move(rt));
|
|
}
|
|
break;
|
|
|
|
case zeek::TYPE_TABLE:
|
|
if ( ctor_type->IsTable() )
|
|
$$ = new zeek::detail::TableConstructorExpr({zeek::AdoptRef{}, $4}, 0, ctor_type);
|
|
else
|
|
$$ = new zeek::detail::SetConstructorExpr({zeek::AdoptRef{}, $4}, 0, ctor_type);
|
|
|
|
break;
|
|
|
|
case zeek::TYPE_VECTOR:
|
|
$$ = new zeek::detail::VectorConstructorExpr({zeek::AdoptRef{}, $4}, ctor_type);
|
|
break;
|
|
|
|
default:
|
|
$1->Error("constructor type not implemented");
|
|
YYERROR;
|
|
}
|
|
}
|
|
|
|
else
|
|
$$ = new zeek::detail::CallExpr({zeek::AdoptRef{}, $1}, {zeek::AdoptRef{}, $4}, in_hook > 0);
|
|
}
|
|
|
|
| TOK_HOOK { ++in_hook; } expr
|
|
{
|
|
--in_hook;
|
|
set_location(@1, @3);
|
|
if ( $3->Tag() != zeek::detail::EXPR_CALL )
|
|
$3->Error("not a valid hook call expression");
|
|
$$ = $3;
|
|
}
|
|
|
|
| expr TOK_HAS_FIELD TOK_ID
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new zeek::detail::HasFieldExpr({zeek::AdoptRef{}, $1}, $3);
|
|
}
|
|
|
|
| anonymous_function
|
|
|
|
|
|
| TOK_SCHEDULE expr '{' event '}'
|
|
{
|
|
set_location(@1, @5);
|
|
$$ = new zeek::detail::ScheduleExpr({zeek::AdoptRef{}, $2}, {zeek::AdoptRef{}, $4});
|
|
}
|
|
|
|
| TOK_ID
|
|
{
|
|
set_location(@1);
|
|
auto id = zeek::detail::lookup_ID($1, zeek::detail::current_module.c_str());
|
|
|
|
if ( ! id )
|
|
{
|
|
if ( ! in_debug )
|
|
{
|
|
/* // CHECK THAT THIS IS NOT GLOBAL.
|
|
id = install_ID($1, zeek::detail::current_module.c_str(),
|
|
false, is_export);
|
|
*/
|
|
|
|
yyerror(fmt("unknown identifier %s", $1));
|
|
YYERROR;
|
|
}
|
|
else
|
|
{
|
|
yyerror(fmt("unknown identifier %s", $1));
|
|
YYERROR;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if ( id->IsDeprecated() )
|
|
reporter->Warning("%s", id->GetDeprecationWarning().c_str());
|
|
|
|
if ( ! id->GetType() )
|
|
{
|
|
id->Error("undeclared variable");
|
|
id->SetType(zeek::error_type());
|
|
$$ = new zeek::detail::NameExpr(std::move(id));
|
|
}
|
|
|
|
else if ( id->IsEnumConst() )
|
|
{
|
|
zeek::EnumType* t = id->GetType()->AsEnumType();
|
|
int intval = t->Lookup(id->ModuleName(),
|
|
id->Name());
|
|
if ( intval < 0 )
|
|
reporter->InternalError("enum value not found for %s", id->Name());
|
|
$$ = new zeek::detail::ConstExpr(t->GetVal(intval));
|
|
}
|
|
else
|
|
{
|
|
$$ = new zeek::detail::NameExpr(std::move(id));
|
|
}
|
|
}
|
|
}
|
|
|
|
| TOK_CONSTANT
|
|
{
|
|
set_location(@1);
|
|
$$ = new zeek::detail::ConstExpr({zeek::AdoptRef{}, $1});
|
|
}
|
|
|
|
| '/' { begin_RE(); } TOK_PATTERN_TEXT TOK_PATTERN_END
|
|
{
|
|
set_location(@3);
|
|
|
|
RE_Matcher* re = new RE_Matcher($3);
|
|
delete [] $3;
|
|
|
|
if ( $4 )
|
|
re->MakeCaseInsensitive();
|
|
|
|
re->Compile();
|
|
$$ = new zeek::detail::ConstExpr(zeek::make_intrusive<zeek::PatternVal>(re));
|
|
}
|
|
|
|
| '|' expr '|' %prec '('
|
|
{
|
|
set_location(@1, @3);
|
|
zeek::detail::ExprPtr e{zeek::AdoptRef{}, $2};
|
|
|
|
if ( zeek::IsIntegral(e->GetType()->Tag()) )
|
|
e = zeek::make_intrusive<zeek::detail::ArithCoerceExpr>(std::move(e), zeek::TYPE_INT);
|
|
|
|
$$ = new zeek::detail::SizeExpr(std::move(e));
|
|
}
|
|
|
|
| expr TOK_AS type
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new zeek::detail::CastExpr({zeek::AdoptRef{}, $1}, {zeek::AdoptRef{}, $3});
|
|
}
|
|
|
|
| expr TOK_IS type
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new zeek::detail::IsExpr({zeek::AdoptRef{}, $1}, {zeek::AdoptRef{}, $3});
|
|
}
|
|
;
|
|
|
|
expr_list:
|
|
expr_list ',' expr
|
|
{
|
|
set_location(@1, @3);
|
|
$1->Append({zeek::AdoptRef{}, $3});
|
|
}
|
|
|
|
| expr
|
|
{
|
|
set_location(@1);
|
|
$$ = new zeek::detail::ListExpr({zeek::AdoptRef{}, $1});
|
|
}
|
|
;
|
|
|
|
opt_expr_list:
|
|
expr_list
|
|
|
|
|
{ $$ = new zeek::detail::ListExpr(); }
|
|
;
|
|
|
|
enum_body:
|
|
enum_body_list
|
|
{
|
|
$$ = cur_enum_type;
|
|
cur_enum_type = nullptr;
|
|
}
|
|
|
|
| enum_body_list ','
|
|
{
|
|
$$ = cur_enum_type;
|
|
cur_enum_type = nullptr;
|
|
}
|
|
;
|
|
|
|
enum_body_list:
|
|
enum_body_elem
|
|
|
|
| enum_body_list ',' enum_body_elem
|
|
;
|
|
|
|
enum_body_elem:
|
|
/* TODO: We could also define this as TOK_ID '=' expr, (or
|
|
TOK_ID '=' = TOK_ID) so that we can return more descriptive
|
|
error messages if someboy tries to use constant variables as
|
|
enumerator.
|
|
*/
|
|
TOK_ID '=' TOK_CONSTANT opt_deprecated
|
|
{
|
|
set_location(@1, @3);
|
|
assert(cur_enum_type);
|
|
|
|
if ( $3->GetType()->Tag() != zeek::TYPE_COUNT )
|
|
reporter->Error("enumerator is not a count constant");
|
|
else
|
|
cur_enum_type->AddName(zeek::detail::current_module, $1,
|
|
$3->InternalUnsigned(), is_export, $4);
|
|
}
|
|
|
|
| TOK_ID '=' '-' TOK_CONSTANT
|
|
{
|
|
/* We only accept counts as enumerator, but we want to return a nice
|
|
error message if users triy to use a negative integer (will also
|
|
catch other cases, but that's fine.)
|
|
*/
|
|
reporter->Error("enumerator is not a count constant");
|
|
}
|
|
|
|
| TOK_ID opt_deprecated
|
|
{
|
|
set_location(@1);
|
|
assert(cur_enum_type);
|
|
cur_enum_type->AddName(zeek::detail::current_module, $1, is_export, $2);
|
|
}
|
|
;
|
|
|
|
type:
|
|
TOK_BOOL {
|
|
set_location(@1);
|
|
$$ = zeek::base_type(zeek::TYPE_BOOL)->Ref();
|
|
}
|
|
|
|
| TOK_INT {
|
|
set_location(@1);
|
|
$$ = zeek::base_type(zeek::TYPE_INT)->Ref();
|
|
}
|
|
|
|
| TOK_COUNT {
|
|
set_location(@1);
|
|
$$ = zeek::base_type(zeek::TYPE_COUNT)->Ref();
|
|
}
|
|
|
|
| TOK_COUNTER {
|
|
set_location(@1);
|
|
$$ = zeek::base_type(zeek::TYPE_COUNTER)->Ref();
|
|
}
|
|
|
|
| TOK_DOUBLE {
|
|
set_location(@1);
|
|
$$ = zeek::base_type(zeek::TYPE_DOUBLE)->Ref();
|
|
}
|
|
|
|
| TOK_TIME {
|
|
set_location(@1);
|
|
$$ = zeek::base_type(zeek::TYPE_TIME)->Ref();
|
|
}
|
|
|
|
| TOK_INTERVAL {
|
|
set_location(@1);
|
|
$$ = zeek::base_type(zeek::TYPE_INTERVAL)->Ref();
|
|
}
|
|
|
|
| TOK_STRING {
|
|
set_location(@1);
|
|
$$ = zeek::base_type(zeek::TYPE_STRING)->Ref();
|
|
}
|
|
|
|
| TOK_PATTERN {
|
|
set_location(@1);
|
|
$$ = zeek::base_type(zeek::TYPE_PATTERN)->Ref();
|
|
}
|
|
|
|
| TOK_TIMER {
|
|
set_location(@1);
|
|
$$ = zeek::base_type(zeek::TYPE_TIMER)->Ref();
|
|
}
|
|
|
|
| TOK_PORT {
|
|
set_location(@1);
|
|
$$ = zeek::base_type(zeek::TYPE_PORT)->Ref();
|
|
}
|
|
|
|
| TOK_ADDR {
|
|
set_location(@1);
|
|
$$ = zeek::base_type(zeek::TYPE_ADDR)->Ref();
|
|
}
|
|
|
|
| TOK_SUBNET {
|
|
set_location(@1);
|
|
$$ = zeek::base_type(zeek::TYPE_SUBNET)->Ref();
|
|
}
|
|
|
|
| TOK_ANY {
|
|
set_location(@1);
|
|
$$ = zeek::base_type(zeek::TYPE_ANY)->Ref();
|
|
}
|
|
|
|
| TOK_TABLE '[' type_list ']' TOK_OF type
|
|
{
|
|
set_location(@1, @6);
|
|
$$ = new zeek::TableType({zeek::AdoptRef{}, $3}, {zeek::AdoptRef{}, $6});
|
|
}
|
|
|
|
| TOK_SET '[' type_list ']'
|
|
{
|
|
set_location(@1, @4);
|
|
$$ = new zeek::SetType({zeek::AdoptRef{}, $3}, nullptr);
|
|
}
|
|
|
|
| TOK_RECORD '{'
|
|
{ ++in_record; }
|
|
type_decl_list
|
|
{ --in_record; }
|
|
'}'
|
|
{
|
|
set_location(@1, @5);
|
|
$$ = new zeek::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);
|
|
$$ = new zeek::VectorType({zeek::AdoptRef{}, $3});
|
|
}
|
|
|
|
| TOK_FUNCTION func_params
|
|
{
|
|
set_location(@1, @2);
|
|
$$ = $2;
|
|
}
|
|
|
|
| TOK_EVENT '(' formal_args ')'
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new zeek::FuncType({zeek::AdoptRef{}, $3}, nullptr, zeek::FUNC_FLAVOR_EVENT);
|
|
}
|
|
|
|
| TOK_HOOK '(' formal_args ')'
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new zeek::FuncType({zeek::AdoptRef{}, $3}, zeek::base_type(zeek::TYPE_BOOL), zeek::FUNC_FLAVOR_HOOK);
|
|
}
|
|
|
|
| TOK_FILE TOK_OF type
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new zeek::FileType({zeek::AdoptRef{}, $3});
|
|
}
|
|
|
|
| TOK_FILE
|
|
{
|
|
set_location(@1);
|
|
$$ = new zeek::FileType(zeek::base_type(zeek::TYPE_STRING));
|
|
}
|
|
|
|
| TOK_OPAQUE TOK_OF TOK_ID
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new zeek::OpaqueType($3);
|
|
}
|
|
|
|
| resolve_id
|
|
{
|
|
if ( ! $1 || ! ($$ = $1->IsType() ? $1->GetType().get() : nullptr) )
|
|
{
|
|
zeek::detail::NullStmt here;
|
|
if ( $1 )
|
|
$1->Error("not a Zeek type", &here);
|
|
$$ = zeek::error_type()->Ref();
|
|
}
|
|
else
|
|
{
|
|
Ref($$);
|
|
|
|
if ( $1->IsDeprecated() )
|
|
reporter->Warning("%s", $1->GetDeprecationWarning().c_str());
|
|
}
|
|
}
|
|
;
|
|
|
|
type_list:
|
|
type_list ',' type
|
|
{ $1->AppendEvenIfNotPure({zeek::AdoptRef{}, $3}); }
|
|
| type
|
|
{
|
|
$$ = new zeek::TypeList({zeek::NewRef{}, $1});
|
|
$$->Append({zeek::AdoptRef{}, $1});
|
|
}
|
|
;
|
|
|
|
type_decl_list:
|
|
type_decl_list type_decl
|
|
{
|
|
$1->push_back($2);
|
|
}
|
|
|
|
|
{
|
|
$$ = new zeek::type_decl_list();
|
|
}
|
|
;
|
|
|
|
type_decl:
|
|
TOK_ID ':' type opt_attr ';'
|
|
{
|
|
set_location(@1, @4);
|
|
auto attrs = make_attributes($4, {zeek::NewRef{}, $3}, in_record > 0, false);
|
|
$$ = new zeek::TypeDecl($1, {zeek::AdoptRef{}, $3}, std::move(attrs));
|
|
|
|
if ( in_record > 0 && cur_decl_type_id )
|
|
zeekygen_mgr->RecordField(cur_decl_type_id, $$, ::filename);
|
|
}
|
|
;
|
|
|
|
formal_args:
|
|
formal_args_decl_list
|
|
{ $$ = new zeek::RecordType($1); }
|
|
| formal_args_decl_list ';'
|
|
{ $$ = new zeek::RecordType($1); }
|
|
|
|
|
{ $$ = new zeek::RecordType(new zeek::type_decl_list()); }
|
|
;
|
|
|
|
formal_args_decl_list:
|
|
formal_args_decl_list ';' formal_args_decl
|
|
{ $1->push_back($3); }
|
|
| formal_args_decl_list ',' formal_args_decl
|
|
{ $1->push_back($3); }
|
|
| formal_args_decl
|
|
{ $$ = new zeek::type_decl_list(); $$->push_back($1); }
|
|
;
|
|
|
|
formal_args_decl:
|
|
TOK_ID ':' type opt_attr
|
|
{
|
|
set_location(@1, @4);
|
|
auto attrs = make_attributes($4, {zeek::NewRef{}, $3}, true, false);
|
|
$$ = new zeek::TypeDecl($1, {zeek::AdoptRef{}, $3}, std::move(attrs));
|
|
}
|
|
;
|
|
|
|
decl:
|
|
TOK_MODULE TOK_ID ';'
|
|
{
|
|
zeek::detail::current_module = $2;
|
|
zeekygen_mgr->ModuleUsage(::filename, zeek::detail::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 ';'
|
|
{
|
|
zeek::IntrusivePtr id{zeek::AdoptRef{}, $2};
|
|
add_global(id, {zeek::AdoptRef{}, $3}, $4, {zeek::AdoptRef{}, $5},
|
|
std::unique_ptr<std::vector<zeek::detail::AttrPtr>>{$6},
|
|
VAR_REGULAR);
|
|
zeekygen_mgr->Identifier(std::move(id));
|
|
}
|
|
|
|
| TOK_OPTION def_global_id opt_type init_class opt_init opt_attr ';'
|
|
{
|
|
zeek::IntrusivePtr id{zeek::AdoptRef{}, $2};
|
|
add_global(id, {zeek::AdoptRef{}, $3}, $4, {zeek::AdoptRef{}, $5},
|
|
std::unique_ptr<std::vector<zeek::detail::AttrPtr>>{$6},
|
|
VAR_OPTION);
|
|
zeekygen_mgr->Identifier(std::move(id));
|
|
}
|
|
|
|
| TOK_CONST def_global_id opt_type init_class opt_init opt_attr ';'
|
|
{
|
|
zeek::IntrusivePtr id{zeek::AdoptRef{}, $2};
|
|
add_global(id, {zeek::AdoptRef{}, $3}, $4, {zeek::AdoptRef{}, $5},
|
|
std::unique_ptr<std::vector<zeek::detail::AttrPtr>>{$6},
|
|
VAR_CONST);
|
|
zeekygen_mgr->Identifier(std::move(id));
|
|
}
|
|
|
|
| TOK_REDEF global_id opt_type init_class opt_init opt_attr ';'
|
|
{
|
|
zeek::IntrusivePtr id{zeek::AdoptRef{}, $2};
|
|
zeek::detail::ExprPtr init{zeek::AdoptRef{}, $5};
|
|
add_global(id, {zeek::AdoptRef{}, $3}, $4, init,
|
|
std::unique_ptr<std::vector<zeek::detail::AttrPtr>>{$6},
|
|
VAR_REDEF);
|
|
zeekygen_mgr->Redef(id.get(), ::filename, $4, std::move(init));
|
|
}
|
|
|
|
| TOK_REDEF TOK_ENUM global_id TOK_ADD_TO '{'
|
|
{ parser_redef_enum($3); zeekygen_mgr->Redef($3, ::filename); }
|
|
enum_body '}' ';'
|
|
{
|
|
// Zeekygen already grabbed new enum IDs as the type created them.
|
|
}
|
|
|
|
| TOK_REDEF TOK_RECORD global_id
|
|
{ cur_decl_type_id = $3; zeekygen_mgr->Redef($3, ::filename); }
|
|
TOK_ADD_TO '{'
|
|
{ ++in_record; }
|
|
type_decl_list
|
|
{ --in_record; }
|
|
'}' opt_attr ';'
|
|
{
|
|
cur_decl_type_id = 0;
|
|
|
|
if ( ! $3->GetType() )
|
|
$3->Error("unknown identifier");
|
|
else
|
|
extend_record($3, std::unique_ptr<zeek::type_decl_list>($8),
|
|
std::unique_ptr<std::vector<zeek::detail::AttrPtr>>($11));
|
|
}
|
|
|
|
| TOK_TYPE global_id ':'
|
|
{ cur_decl_type_id = $2; zeekygen_mgr->StartType({zeek::NewRef{}, $2}); }
|
|
type opt_attr ';'
|
|
{
|
|
cur_decl_type_id = 0;
|
|
zeek::IntrusivePtr id{zeek::AdoptRef{}, $2};
|
|
add_type(id.get(), {zeek::AdoptRef{}, $5},
|
|
std::unique_ptr<std::vector<zeek::detail::AttrPtr>>{$6});
|
|
zeekygen_mgr->Identifier(std::move(id));
|
|
}
|
|
|
|
| func_hdr { func_hdr_location = @1; } func_body
|
|
|
|
| func_hdr { func_hdr_location = @1; } conditional_list func_body
|
|
|
|
| conditional
|
|
;
|
|
|
|
conditional_list:
|
|
conditional
|
|
| conditional conditional_list
|
|
|
|
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 opt_attr
|
|
{
|
|
zeek::IntrusivePtr id{zeek::AdoptRef{}, $2};
|
|
begin_func(id, zeek::detail::current_module.c_str(),
|
|
zeek::FUNC_FLAVOR_FUNCTION, 0, {zeek::NewRef{}, $3},
|
|
std::unique_ptr<std::vector<zeek::detail::AttrPtr>>{$4});
|
|
$$ = $3;
|
|
zeekygen_mgr->Identifier(std::move(id));
|
|
}
|
|
| TOK_EVENT event_id func_params opt_attr
|
|
{
|
|
const char* name = $2->Name();
|
|
if ( streq("bro_init", name) || streq("bro_done", name) || streq("bro_script_loaded", name) )
|
|
{
|
|
auto base = std::string(name).substr(4);
|
|
reporter->Error("event %s() is no longer available, use zeek_%s() instead", name, base.c_str());
|
|
}
|
|
|
|
begin_func({zeek::NewRef{}, $2}, zeek::detail::current_module.c_str(),
|
|
zeek::FUNC_FLAVOR_EVENT, 0, {zeek::NewRef{}, $3},
|
|
std::unique_ptr<std::vector<zeek::detail::AttrPtr>>{$4});
|
|
$$ = $3;
|
|
}
|
|
| TOK_HOOK def_global_id func_params opt_attr
|
|
{
|
|
$3->ClearYieldType(zeek::FUNC_FLAVOR_HOOK);
|
|
$3->SetYieldType(zeek::base_type(zeek::TYPE_BOOL));
|
|
begin_func({zeek::NewRef{}, $2}, zeek::detail::current_module.c_str(),
|
|
zeek::FUNC_FLAVOR_HOOK, 0, {zeek::NewRef{}, $3},
|
|
std::unique_ptr<std::vector<zeek::detail::AttrPtr>>{$4});
|
|
$$ = $3;
|
|
}
|
|
| TOK_REDEF TOK_EVENT event_id func_params opt_attr
|
|
{
|
|
begin_func({zeek::NewRef{}, $3}, zeek::detail::current_module.c_str(),
|
|
zeek::FUNC_FLAVOR_EVENT, 1, {zeek::NewRef{}, $4},
|
|
std::unique_ptr<std::vector<zeek::detail::AttrPtr>>{$5});
|
|
$$ = $4;
|
|
}
|
|
;
|
|
|
|
func_body:
|
|
'{'
|
|
{
|
|
saved_in_init.push_back(in_init);
|
|
in_init = 0;
|
|
}
|
|
|
|
stmt_list
|
|
{
|
|
in_init = saved_in_init.back();
|
|
saved_in_init.pop_back();
|
|
}
|
|
|
|
'}'
|
|
{
|
|
set_location(func_hdr_location, @5);
|
|
end_func({zeek::AdoptRef{}, $3});
|
|
}
|
|
;
|
|
|
|
lambda_body:
|
|
'{'
|
|
{
|
|
saved_in_init.push_back(in_init);
|
|
in_init = 0;
|
|
}
|
|
|
|
stmt_list
|
|
{
|
|
in_init = saved_in_init.back();
|
|
saved_in_init.pop_back();
|
|
}
|
|
|
|
'}'
|
|
{
|
|
set_location(@1, @5);
|
|
|
|
// Code duplication here is sad but needed. end_func actually instantiates the function
|
|
// and associates it with an ID. We perform that association later and need to return
|
|
// a lambda expression.
|
|
|
|
// Gather the ingredients for a BroFunc from the current scope
|
|
auto ingredients = std::make_unique<function_ingredients>(zeek::IntrusivePtr{zeek::NewRef{}, zeek::detail::current_scope()}, zeek::IntrusivePtr{zeek::AdoptRef{}, $3});
|
|
id_list outer_ids = gather_outer_ids(zeek::detail::pop_scope().get(), ingredients->body.get());
|
|
|
|
$$ = new zeek::detail::LambdaExpr(std::move(ingredients), std::move(outer_ids));
|
|
}
|
|
;
|
|
|
|
anonymous_function:
|
|
TOK_FUNCTION begin_func lambda_body
|
|
{ $$ = $3; }
|
|
;
|
|
|
|
begin_func:
|
|
func_params
|
|
{
|
|
auto id = zeek::detail::current_scope()->GenerateTemporary("anonymous-function");
|
|
begin_func(id, zeek::detail::current_module.c_str(), zeek::FUNC_FLAVOR_FUNCTION, 0, {zeek::AdoptRef{}, $1});
|
|
$$ = id.release();
|
|
}
|
|
;
|
|
|
|
func_params:
|
|
'(' formal_args ')' ':' type
|
|
{ $$ = new zeek::FuncType({zeek::AdoptRef{}, $2}, {zeek::AdoptRef{}, $5}, zeek::FUNC_FLAVOR_FUNCTION); }
|
|
| '(' formal_args ')'
|
|
{ $$ = new zeek::FuncType({zeek::AdoptRef{}, $2}, zeek::base_type(zeek::TYPE_VOID), zeek::FUNC_FLAVOR_FUNCTION); }
|
|
;
|
|
|
|
opt_type:
|
|
':' type
|
|
{ $$ = $2; }
|
|
|
|
|
{ $$ = 0; }
|
|
;
|
|
|
|
init_class:
|
|
{ $$ = zeek::detail::INIT_NONE; }
|
|
| '=' { $$ = zeek::detail::INIT_FULL; }
|
|
| TOK_ADD_TO { $$ = zeek::detail::INIT_EXTRA; }
|
|
| TOK_REMOVE_FROM { $$ = zeek::detail::INIT_REMOVE; }
|
|
;
|
|
|
|
opt_init:
|
|
{ ++in_init; } init { --in_init; }
|
|
{ $$ = $2; }
|
|
|
|
|
{ $$ = 0; }
|
|
;
|
|
|
|
init:
|
|
'{' opt_expr_list '}'
|
|
{ $$ = $2; }
|
|
| '{' expr_list ',' '}'
|
|
{ $$ = $2; }
|
|
| expr
|
|
;
|
|
|
|
index_slice:
|
|
expr '[' opt_expr ':' opt_expr ']'
|
|
{
|
|
set_location(@1, @6);
|
|
|
|
auto low = $3 ? zeek::detail::ExprPtr{zeek::AdoptRef{}, $3} :
|
|
zeek::make_intrusive<zeek::detail::ConstExpr>(val_mgr->Count(0));
|
|
|
|
auto high = $5 ? zeek::detail::ExprPtr{zeek::AdoptRef{}, $5} :
|
|
zeek::make_intrusive<zeek::detail::SizeExpr>(
|
|
zeek::detail::ExprPtr{zeek::NewRef{}, $1});
|
|
|
|
if ( ! zeek::IsIntegral(low->GetType()->Tag()) || ! zeek::IsIntegral(high->GetType()->Tag()) )
|
|
reporter->Error("slice notation must have integral values as indexes");
|
|
|
|
auto le = zeek::make_intrusive<zeek::detail::ListExpr>(std::move(low));
|
|
le->Append(std::move(high));
|
|
$$ = new zeek::detail::IndexExpr({zeek::AdoptRef{}, $1}, std::move(le), true);
|
|
}
|
|
|
|
opt_attr:
|
|
attr_list
|
|
|
|
|
{ $$ = nullptr; }
|
|
;
|
|
|
|
attr_list:
|
|
attr_list attr
|
|
{ $1->emplace_back(zeek::AdoptRef{}, $2); }
|
|
| attr
|
|
{
|
|
$$ = new std::vector<zeek::detail::AttrPtr>;
|
|
$$->emplace_back(zeek::AdoptRef{}, $1);
|
|
}
|
|
;
|
|
|
|
attr:
|
|
TOK_ATTR_DEFAULT '=' expr
|
|
{ $$ = new zeek::detail::Attr(zeek::detail::ATTR_DEFAULT, {zeek::AdoptRef{}, $3}); }
|
|
| TOK_ATTR_OPTIONAL
|
|
{ $$ = new zeek::detail::Attr(zeek::detail::ATTR_OPTIONAL); }
|
|
| TOK_ATTR_REDEF
|
|
{ $$ = new zeek::detail::Attr(zeek::detail::ATTR_REDEF); }
|
|
| TOK_ATTR_ADD_FUNC '=' expr
|
|
{ $$ = new zeek::detail::Attr(zeek::detail::ATTR_ADD_FUNC, {zeek::AdoptRef{}, $3}); }
|
|
| TOK_ATTR_DEL_FUNC '=' expr
|
|
{ $$ = new zeek::detail::Attr(zeek::detail::ATTR_DEL_FUNC, {zeek::AdoptRef{}, $3}); }
|
|
| TOK_ATTR_ON_CHANGE '=' expr
|
|
{ $$ = new zeek::detail::Attr(zeek::detail::ATTR_ON_CHANGE, {zeek::AdoptRef{}, $3}); }
|
|
| TOK_ATTR_EXPIRE_FUNC '=' expr
|
|
{ $$ = new zeek::detail::Attr(zeek::detail::ATTR_EXPIRE_FUNC, {zeek::AdoptRef{}, $3}); }
|
|
| TOK_ATTR_EXPIRE_CREATE '=' expr
|
|
{ $$ = new zeek::detail::Attr(zeek::detail::ATTR_EXPIRE_CREATE, {zeek::AdoptRef{}, $3}); }
|
|
| TOK_ATTR_EXPIRE_READ '=' expr
|
|
{ $$ = new zeek::detail::Attr(zeek::detail::ATTR_EXPIRE_READ, {zeek::AdoptRef{}, $3}); }
|
|
| TOK_ATTR_EXPIRE_WRITE '=' expr
|
|
{ $$ = new zeek::detail::Attr(zeek::detail::ATTR_EXPIRE_WRITE, {zeek::AdoptRef{}, $3}); }
|
|
| TOK_ATTR_RAW_OUTPUT
|
|
{ $$ = new zeek::detail::Attr(zeek::detail::ATTR_RAW_OUTPUT); }
|
|
| TOK_ATTR_PRIORITY '=' expr
|
|
{ $$ = new zeek::detail::Attr(zeek::detail::ATTR_PRIORITY, {zeek::AdoptRef{}, $3}); }
|
|
| TOK_ATTR_TYPE_COLUMN '=' expr
|
|
{ $$ = new zeek::detail::Attr(zeek::detail::ATTR_TYPE_COLUMN, {zeek::AdoptRef{}, $3}); }
|
|
| TOK_ATTR_LOG
|
|
{ $$ = new zeek::detail::Attr(zeek::detail::ATTR_LOG); }
|
|
| TOK_ATTR_ERROR_HANDLER
|
|
{ $$ = new zeek::detail::Attr(zeek::detail::ATTR_ERROR_HANDLER); }
|
|
| TOK_ATTR_DEPRECATED
|
|
{ $$ = new zeek::detail::Attr(zeek::detail::ATTR_DEPRECATED); }
|
|
| TOK_ATTR_DEPRECATED '=' TOK_CONSTANT
|
|
{
|
|
if ( zeek::IsString($3->GetType()->Tag()) )
|
|
$$ = new zeek::detail::Attr(
|
|
zeek::detail::ATTR_DEPRECATED,
|
|
zeek::make_intrusive<zeek::detail::ConstExpr>(zeek::IntrusivePtr{zeek::AdoptRef{}, $3}));
|
|
else
|
|
{
|
|
ODesc d;
|
|
$3->Describe(&d);
|
|
Unref($3);
|
|
reporter->Error("'&deprecated=%s' must use a string literal",
|
|
d.Description());
|
|
$$ = new zeek::detail::Attr(zeek::detail::ATTR_DEPRECATED);
|
|
}
|
|
}
|
|
;
|
|
|
|
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 zeek::detail::PrintStmt(zeek::IntrusivePtr{zeek::AdoptRef{}, $2});
|
|
if ( ! $4 )
|
|
brofiler.AddStmt($$);
|
|
}
|
|
|
|
| TOK_EVENT event ';' opt_no_test
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new zeek::detail::EventStmt({zeek::AdoptRef{}, $2});
|
|
if ( ! $4 )
|
|
brofiler.AddStmt($$);
|
|
}
|
|
|
|
| TOK_IF '(' expr ')' stmt
|
|
{
|
|
set_location(@1, @4);
|
|
$$ = new zeek::detail::IfStmt({zeek::AdoptRef{}, $3}, {zeek::AdoptRef{}, $5}, zeek::make_intrusive<zeek::detail::NullStmt>());
|
|
}
|
|
|
|
| TOK_IF '(' expr ')' stmt TOK_ELSE stmt
|
|
{
|
|
set_location(@1, @4);
|
|
$$ = new zeek::detail::IfStmt({zeek::AdoptRef{}, $3}, {zeek::AdoptRef{}, $5}, {zeek::AdoptRef{}, $7});
|
|
}
|
|
|
|
| TOK_SWITCH expr '{' case_list '}'
|
|
{
|
|
set_location(@1, @2);
|
|
$$ = new zeek::detail::SwitchStmt({zeek::AdoptRef{}, $2}, $4);
|
|
}
|
|
|
|
| for_head stmt
|
|
{
|
|
$1->AsForStmt()->AddBody({zeek::AdoptRef{}, $2});
|
|
}
|
|
|
|
| TOK_WHILE '(' expr ')' stmt
|
|
{
|
|
$$ = new zeek::detail::WhileStmt({zeek::AdoptRef{}, $3}, {zeek::AdoptRef{}, $5});
|
|
}
|
|
|
|
| TOK_NEXT ';' opt_no_test
|
|
{
|
|
set_location(@1, @2);
|
|
$$ = new zeek::detail::NextStmt;
|
|
if ( ! $3 )
|
|
brofiler.AddStmt($$);
|
|
}
|
|
|
|
| TOK_BREAK ';' opt_no_test
|
|
{
|
|
set_location(@1, @2);
|
|
$$ = new zeek::detail::BreakStmt;
|
|
if ( ! $3 )
|
|
brofiler.AddStmt($$);
|
|
}
|
|
|
|
| TOK_FALLTHROUGH ';' opt_no_test
|
|
{
|
|
set_location(@1, @2);
|
|
$$ = new zeek::detail::FallthroughStmt;
|
|
if ( ! $3 )
|
|
brofiler.AddStmt($$);
|
|
}
|
|
|
|
| TOK_RETURN ';' opt_no_test
|
|
{
|
|
set_location(@1, @2);
|
|
$$ = new zeek::detail::ReturnStmt(0);
|
|
if ( ! $3 )
|
|
brofiler.AddStmt($$);
|
|
}
|
|
|
|
| TOK_RETURN expr ';' opt_no_test
|
|
{
|
|
set_location(@1, @2);
|
|
$$ = new zeek::detail::ReturnStmt({zeek::AdoptRef{}, $2});
|
|
if ( ! $4 )
|
|
brofiler.AddStmt($$);
|
|
}
|
|
|
|
| TOK_ADD expr ';' opt_no_test
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new zeek::detail::AddStmt({zeek::AdoptRef{}, $2});
|
|
if ( ! $4 )
|
|
brofiler.AddStmt($$);
|
|
}
|
|
|
|
| TOK_DELETE expr ';' opt_no_test
|
|
{
|
|
set_location(@1, @3);
|
|
$$ = new zeek::detail::DelStmt({zeek::AdoptRef{}, $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({zeek::AdoptRef{}, $2}, {zeek::AdoptRef{}, $3}, $4,
|
|
{zeek::AdoptRef{}, $5},
|
|
std::unique_ptr<std::vector<zeek::detail::AttrPtr>>{$6},
|
|
VAR_REGULAR).release();
|
|
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({zeek::AdoptRef{}, $2}, {zeek::AdoptRef{}, $3}, $4,
|
|
{zeek::AdoptRef{}, $5},
|
|
std::unique_ptr<std::vector<zeek::detail::AttrPtr>>{$6},
|
|
VAR_CONST).release();
|
|
if ( ! $8 )
|
|
brofiler.AddStmt($$);
|
|
}
|
|
|
|
| TOK_WHEN '(' expr ')' stmt
|
|
{
|
|
set_location(@3, @5);
|
|
$$ = new zeek::detail::WhenStmt({zeek::AdoptRef{}, $3}, {zeek::AdoptRef{}, $5},
|
|
nullptr, nullptr, false);
|
|
}
|
|
|
|
| TOK_WHEN '(' expr ')' stmt TOK_TIMEOUT expr '{' opt_no_test_block stmt_list '}'
|
|
{
|
|
set_location(@3, @9);
|
|
$$ = new zeek::detail::WhenStmt({zeek::AdoptRef{}, $3}, {zeek::AdoptRef{}, $5},
|
|
{zeek::AdoptRef{}, $10}, {zeek::AdoptRef{}, $7}, false);
|
|
if ( $9 )
|
|
brofiler.DecIgnoreDepth();
|
|
}
|
|
|
|
|
|
| TOK_RETURN TOK_WHEN '(' expr ')' stmt
|
|
{
|
|
set_location(@4, @6);
|
|
$$ = new zeek::detail::WhenStmt({zeek::AdoptRef{}, $4}, {zeek::AdoptRef{}, $6}, nullptr,
|
|
nullptr, true);
|
|
}
|
|
|
|
| TOK_RETURN TOK_WHEN '(' expr ')' stmt TOK_TIMEOUT expr '{' opt_no_test_block stmt_list '}'
|
|
{
|
|
set_location(@4, @10);
|
|
$$ = new zeek::detail::WhenStmt({zeek::AdoptRef{}, $4}, {zeek::AdoptRef{}, $6},
|
|
{zeek::AdoptRef{}, $11}, {zeek::AdoptRef{}, $8}, true);
|
|
if ( $10 )
|
|
brofiler.DecIgnoreDepth();
|
|
}
|
|
|
|
| index_slice '=' expr ';' opt_no_test
|
|
{
|
|
set_location(@1, @4);
|
|
$$ = new zeek::detail::ExprStmt(zeek::detail::get_assign_expr({zeek::AdoptRef{}, $1},
|
|
{zeek::AdoptRef{}, $3}, in_init));
|
|
|
|
if ( ! $5 )
|
|
brofiler.AddStmt($$);
|
|
}
|
|
|
|
| expr ';' opt_no_test
|
|
{
|
|
set_location(@1, @2);
|
|
$$ = new zeek::detail::ExprStmt({zeek::AdoptRef{}, $1});
|
|
if ( ! $3 )
|
|
brofiler.AddStmt($$);
|
|
}
|
|
|
|
| ';'
|
|
{
|
|
set_location(@1, @1);
|
|
$$ = new zeek::detail::NullStmt;
|
|
}
|
|
|
|
| conditional
|
|
{ $$ = new zeek::detail::NullStmt; }
|
|
;
|
|
|
|
stmt_list:
|
|
stmt_list stmt
|
|
{
|
|
set_location(@1, @2);
|
|
$1->AsStmtList()->Stmts().push_back($2);
|
|
$1->UpdateLocationEndInfo(@2);
|
|
}
|
|
|
|
|
{ $$ = new zeek::detail::StmtList(); }
|
|
;
|
|
|
|
event:
|
|
TOK_ID '(' opt_expr_list ')'
|
|
{
|
|
set_location(@1, @4);
|
|
const auto& id = zeek::detail::lookup_ID($1, zeek::detail::current_module.c_str());
|
|
|
|
if ( id )
|
|
{
|
|
if ( ! id->IsGlobal() )
|
|
{
|
|
yyerror(fmt("local identifier \"%s\" cannot be used to reference an event", $1));
|
|
YYERROR;
|
|
}
|
|
|
|
if ( id->IsDeprecated() )
|
|
reporter->Warning("%s", id->GetDeprecationWarning().c_str());
|
|
}
|
|
|
|
$$ = new zeek::detail::EventExpr($1, {zeek::AdoptRef{}, $3});
|
|
}
|
|
;
|
|
|
|
case_list:
|
|
case_list case
|
|
{ $1->push_back($2); }
|
|
|
|
|
{ $$ = new zeek::detail::case_list; }
|
|
;
|
|
|
|
case:
|
|
TOK_CASE expr_list ':' stmt_list
|
|
{ $$ = new zeek::detail::Case({zeek::AdoptRef{}, $2}, 0, {zeek::AdoptRef{}, $4}); }
|
|
|
|
|
TOK_CASE case_type_list ':' stmt_list
|
|
{ $$ = new zeek::detail::Case(nullptr, $2, {zeek::AdoptRef{}, $4}); }
|
|
|
|
|
TOK_DEFAULT ':' stmt_list
|
|
{ $$ = new zeek::detail::Case(nullptr, 0, {zeek::AdoptRef{}, $3}); }
|
|
;
|
|
|
|
case_type_list:
|
|
case_type_list ',' case_type
|
|
{ $1->push_back($3); }
|
|
|
|
|
case_type
|
|
{
|
|
$$ = new id_list;
|
|
$$->push_back($1);
|
|
}
|
|
;
|
|
|
|
case_type:
|
|
TOK_TYPE type
|
|
{
|
|
$$ = new zeek::detail::ID(0, zeek::detail::SCOPE_FUNCTION, 0);
|
|
$$->SetType({zeek::AdoptRef{}, $2});
|
|
}
|
|
|
|
| TOK_TYPE type TOK_AS TOK_ID
|
|
{
|
|
const char* name = $4;
|
|
zeek::TypePtr type{zeek::AdoptRef{}, $2};
|
|
auto case_var = zeek::detail::lookup_ID(name, zeek::detail::current_module.c_str());
|
|
|
|
if ( case_var && case_var->IsGlobal() )
|
|
case_var->Error("already a global identifier");
|
|
else
|
|
case_var = zeek::detail::install_ID(name, zeek::detail::current_module.c_str(), false, false);
|
|
|
|
add_local(case_var, std::move(type), zeek::detail::INIT_NONE, nullptr, nullptr,
|
|
VAR_REGULAR);
|
|
$$ = case_var.release();
|
|
}
|
|
|
|
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.
|
|
auto loop_var = zeek::detail::lookup_ID($3, zeek::detail::current_module.c_str());
|
|
|
|
if ( loop_var )
|
|
{
|
|
if ( loop_var->IsGlobal() )
|
|
loop_var->Error("global variable used in for loop");
|
|
}
|
|
|
|
else
|
|
{
|
|
loop_var = zeek::detail::install_ID($3, zeek::detail::current_module.c_str(),
|
|
false, false);
|
|
}
|
|
|
|
id_list* loop_vars = new id_list;
|
|
loop_vars->push_back(loop_var.release());
|
|
|
|
$$ = new zeek::detail::ForStmt(loop_vars, {zeek::AdoptRef{}, $5});
|
|
}
|
|
|
|
|
TOK_FOR '(' '[' local_id_list ']' TOK_IN expr ')'
|
|
{
|
|
$$ = new zeek::detail::ForStmt($4, {zeek::AdoptRef{}, $7});
|
|
}
|
|
|
|
|
TOK_FOR '(' TOK_ID ',' TOK_ID TOK_IN expr ')'
|
|
{
|
|
set_location(@1, @8);
|
|
const char* module = zeek::detail::current_module.c_str();
|
|
|
|
// Check for previous definitions of key and
|
|
// value variables.
|
|
auto key_var = zeek::detail::lookup_ID($3, module);
|
|
auto val_var = zeek::detail::lookup_ID($5, module);
|
|
|
|
// Validate previous definitions as needed.
|
|
if ( key_var )
|
|
{
|
|
if ( key_var->IsGlobal() )
|
|
key_var->Error("global variable used in for loop");
|
|
}
|
|
else
|
|
key_var = zeek::detail::install_ID($3, module, false, false);
|
|
|
|
if ( val_var )
|
|
{
|
|
if ( val_var->IsGlobal() )
|
|
val_var->Error("global variable used in for loop");
|
|
}
|
|
else
|
|
val_var = zeek::detail::install_ID($5, module, false, false);
|
|
|
|
id_list* loop_vars = new id_list;
|
|
loop_vars->push_back(key_var.release());
|
|
|
|
$$ = new zeek::detail::ForStmt(loop_vars, {zeek::AdoptRef{}, $7}, std::move(val_var));
|
|
}
|
|
|
|
|
TOK_FOR '(' '[' local_id_list ']' ',' TOK_ID TOK_IN expr ')'
|
|
{
|
|
set_location(@1, @10);
|
|
const char* module = zeek::detail::current_module.c_str();
|
|
|
|
// Validate value variable
|
|
auto val_var = zeek::detail::lookup_ID($7, module);
|
|
|
|
if ( val_var )
|
|
{
|
|
if ( val_var->IsGlobal() )
|
|
val_var->Error("global variable used in for loop");
|
|
}
|
|
else
|
|
val_var = zeek::detail::install_ID($7, module, false, false);
|
|
|
|
$$ = new zeek::detail::ForStmt($4, {zeek::AdoptRef{}, $9}, std::move(val_var));
|
|
}
|
|
;
|
|
|
|
local_id_list:
|
|
local_id_list ',' local_id
|
|
{ $1->push_back($3); }
|
|
| local_id
|
|
{
|
|
$$ = new id_list;
|
|
$$->push_back($1);
|
|
}
|
|
;
|
|
|
|
local_id:
|
|
TOK_ID
|
|
{
|
|
set_location(@1);
|
|
auto id = zeek::detail::lookup_ID($1, zeek::detail::current_module.c_str());
|
|
$$ = id.release();
|
|
|
|
if ( $$ )
|
|
{
|
|
if ( $$->IsGlobal() )
|
|
$$->Error("already a global identifier");
|
|
delete [] $1;
|
|
}
|
|
|
|
else
|
|
{
|
|
$$ = zeek::detail::install_ID($1, zeek::detail::current_module.c_str(),
|
|
false, is_export).release();
|
|
}
|
|
}
|
|
;
|
|
|
|
global_id:
|
|
{ resolving_global_ID = 1; } global_or_event_id
|
|
{ $$ = $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);
|
|
auto id = zeek::detail::lookup_ID($1, zeek::detail::current_module.c_str(), false,
|
|
defining_global_ID);
|
|
$$ = id.release();
|
|
|
|
if ( $$ )
|
|
{
|
|
if ( ! $$->IsGlobal() )
|
|
$$->Error("already a local identifier");
|
|
|
|
if ( $$->IsDeprecated() )
|
|
{
|
|
const auto& t = $$->GetType();
|
|
|
|
if ( t->Tag() != zeek::TYPE_FUNC ||
|
|
t->AsFuncType()->Flavor() != zeek::FUNC_FLAVOR_FUNCTION )
|
|
reporter->Warning("%s", $$->GetDeprecationWarning().c_str());
|
|
}
|
|
|
|
delete [] $1;
|
|
}
|
|
|
|
else
|
|
{
|
|
const char* module_name =
|
|
resolving_global_ID ?
|
|
zeek::detail::current_module.c_str() : 0;
|
|
|
|
$$ = zeek::detail::install_ID($1, module_name,
|
|
true, is_export).release();
|
|
}
|
|
}
|
|
;
|
|
|
|
|
|
resolve_id:
|
|
TOK_ID
|
|
{
|
|
set_location(@1);
|
|
auto id = zeek::detail::lookup_ID($1, zeek::detail::current_module.c_str());
|
|
$$ = id.release();
|
|
|
|
if ( ! $$ )
|
|
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; }
|
|
|
|
opt_deprecated:
|
|
TOK_ATTR_DEPRECATED
|
|
{ $$ = new zeek::detail::ConstExpr(zeek::make_intrusive<zeek::StringVal>("")); }
|
|
|
|
|
TOK_ATTR_DEPRECATED '=' TOK_CONSTANT
|
|
{
|
|
if ( zeek::IsString($3->GetType()->Tag()) )
|
|
$$ = new zeek::detail::ConstExpr({zeek::AdoptRef{}, $3});
|
|
else
|
|
{
|
|
ODesc d;
|
|
$3->Describe(&d);
|
|
reporter->Error("'&deprecated=%s' must use a string literal",
|
|
d.Description());
|
|
$$ = new zeek::detail::ConstExpr(zeek::make_intrusive<zeek::StringVal>(""));
|
|
}
|
|
}
|
|
|
|
|
{ $$ = nullptr; }
|
|
|
|
%%
|
|
|
|
int yyerror(const char msg[])
|
|
{
|
|
if ( in_debug )
|
|
g_curr_debug_error = copy_string(msg);
|
|
|
|
if ( last_tok[0] == '\n' )
|
|
reporter->Error("%s, on previous line", msg);
|
|
else if ( last_tok[0] == '\0' )
|
|
{
|
|
if ( last_filename )
|
|
reporter->Error("%s, at end of file %s", msg, last_filename);
|
|
else
|
|
reporter->Error("%s, at end of file", msg);
|
|
}
|
|
else
|
|
{
|
|
if ( last_last_tok_filename && last_tok_filename &&
|
|
! streq(last_last_tok_filename, last_tok_filename) )
|
|
reporter->Error("%s, at or near \"%s\" or end of file %s",
|
|
msg, last_tok, last_last_tok_filename);
|
|
else
|
|
reporter->Error("%s, at or near \"%s\"", msg, last_tok);
|
|
}
|
|
|
|
return 0;
|
|
}
|