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icinga2/tools/mkclass/class_parser.yy

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%{
/******************************************************************************
* Icinga 2 *
* Copyright (C) 2012-2018 Icinga Development Team (https://icinga.com/) *
* *
* This program is free software; you can redistribute it and/or *
* modify it under the terms of the GNU General Public License *
* as published by the Free Software Foundation; either version 2 *
* of the License, or (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the Free Software Foundation *
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
******************************************************************************/
#include "classcompiler.hpp"
#include <iostream>
#include <vector>
#include <cstring>
using std::malloc;
using std::free;
using std::exit;
using namespace icinga;
#define YYLTYPE icinga::ClassDebugInfo
%}
%pure-parser
%locations
%defines
%error-verbose
%parse-param { ClassCompiler *context }
%lex-param { void *scanner }
%union {
char *text;
int num;
FieldType *type;
Field *field;
std::vector<Field> *fields;
Klass *klass;
FieldAccessor *fieldaccessor;
std::vector<FieldAccessor> *fieldaccessors;
Rule *rule;
std::vector<Rule> *rules;
Validator *validator;
}
%token T_INCLUDE "#include (T_INCLUDE)"
%token T_IMPL_INCLUDE "#impl_include (T_IMPL_INCLUDE)"
%token T_CLASS "class (T_CLASS)"
%token T_CODE "code (T_CODE)"
%token T_LOAD_AFTER "load_after (T_LOAD_AFTER)"
%token T_ACTIVATION_PRIORITY "activation_priority (T_ACTIVATION_PRIORITY)"
%token T_LIBRARY "library (T_LIBRARY)"
%token T_NAMESPACE "namespace (T_NAMESPACE)"
%token T_VALIDATOR "validator (T_VALIDATOR)"
%token T_REQUIRED "required (T_REQUIRED)"
%token T_NAVIGATION "navigation (T_NAVIGATION)"
%token T_NAME "name (T_NAME)"
%token T_ARRAY "array (T_ARRAY)"
%token T_STRING "string (T_STRING)"
%token T_ANGLE_STRING "angle_string (T_ANGLE_STRING)"
%token T_FIELD_ATTRIBUTE "field_attribute (T_FIELD_ATTRIBUTE)"
%token T_CLASS_ATTRIBUTE "class_attribute (T_CLASS_ATTRIBUTE)"
%token T_IDENTIFIER "identifier (T_IDENTIFIER)"
%token T_GET "get (T_GET)"
%token T_SET "set (T_SET)"
%token T_DEFAULT "default (T_DEFAULT)"
%token T_FIELD_ACCESSOR_TYPE "field_accessor_type (T_FIELD_ACCESSOR_TYPE)"
%token T_NUMBER "number (T_NUMBER)"
%type <text> T_IDENTIFIER
%type <text> T_STRING
%type <text> T_ANGLE_STRING
%type <text> identifier
%type <text> alternative_name_specifier
%type <text> inherits_specifier
%type <text> type_base_specifier
%type <text> include
%type <text> angle_include
%type <text> impl_include
%type <text> angle_impl_include
%type <text> code
%type <num> T_FIELD_ATTRIBUTE
%type <field> field_attribute
%type <field> field_attributes
%type <field> field_attribute_list
%type <num> T_FIELD_ACCESSOR_TYPE
%type <num> T_CLASS_ATTRIBUTE
%type <num> class_attribute_list
%type <type> field_type
%type <field> class_field
%type <fields> class_fields
%type <klass> class
%type <fieldaccessors> field_accessor_list
%type <fieldaccessors> field_accessors
%type <fieldaccessor> field_accessor
%type <rule> validator_rule
%type <rules> validator_rules
%type <validator> validator
%type <num> T_NUMBER
%{
int yylex(YYSTYPE *lvalp, YYLTYPE *llocp, void *scanner);
void yyerror(YYLTYPE *locp, ClassCompiler *, const char *err)
{
std::cerr << "in " << locp->path << " at " << locp->first_line << ":" << locp->first_column << "-"
<< locp->last_line << ":" << locp->last_column << ": " << err << std::endl;
std::exit(1);
}
int yyparse(ClassCompiler *context);
void ClassCompiler::Compile(void)
{
try {
yyparse(this);
} catch (const std::exception& ex) {
std::cerr << "Exception: " << ex.what();
}
HandleMissingValidators();
}
#define scanner (context->GetScanner())
%}
%%
statements: /* empty */
| statements statement
;
statement: include
{
context->HandleInclude($1, yylloc);
std::free($1);
}
| angle_include
{
context->HandleAngleInclude($1, yylloc);
std::free($1);
}
| impl_include
{
context->HandleImplInclude($1, yylloc);
std::free($1);
}
| angle_impl_include
{
context->HandleAngleImplInclude($1, yylloc);
std::free($1);
}
| class
{
context->HandleClass(*$1, yylloc);
delete $1;
}
| validator
{
context->HandleValidator(*$1, yylloc);
delete $1;
}
| namespace
| code
{
context->HandleCode($1, yylloc);
std::free($1);
}
| library
;
include: T_INCLUDE T_STRING
{
$$ = $2;
}
;
angle_include: T_INCLUDE T_ANGLE_STRING
{
$$ = $2;
}
;
impl_include: T_IMPL_INCLUDE T_STRING
{
$$ = $2;
}
;
angle_impl_include: T_IMPL_INCLUDE T_ANGLE_STRING
{
$$ = $2;
}
;
namespace: T_NAMESPACE identifier '{'
{
context->HandleNamespaceBegin($2, yylloc);
std::free($2);
}
statements '}'
{
context->HandleNamespaceEnd(yylloc);
}
;
code: T_CODE T_STRING
{
$$ = $2;
}
;
library: T_LIBRARY T_IDENTIFIER ';'
{
context->HandleLibrary($2, yylloc);
free($2);
}
;
class: class_attribute_list T_CLASS T_IDENTIFIER inherits_specifier type_base_specifier '{' class_fields '}' ';'
{
$$ = new Klass();
$$->Name = $3;
std::free($3);
if ($4) {
$$->Parent = $4;
std::free($4);
}
if ($5) {
$$->TypeBase = $5;
std::free($5);
}
$$->Attributes = $1;
for (const Field& field : *$7) {
if (field.Attributes & FALoadDependency) {
$$->LoadDependencies.push_back(field.Name);
} else if (field.Attributes & FAActivationPriority) {
$$->ActivationPriority = field.Priority;
} else
$$->Fields.push_back(field);
}
delete $7;
ClassCompiler::OptimizeStructLayout($$->Fields);
}
;
class_attribute_list: /* empty */
{
$$ = 0;
}
| T_CLASS_ATTRIBUTE
{
$$ = $1;
}
| class_attribute_list T_CLASS_ATTRIBUTE
{
$$ = $1 | $2;
}
inherits_specifier: /* empty */
{
$$ = NULL;
}
| ':' identifier
{
$$ = $2;
}
;
type_base_specifier: /* empty */
{
$$ = NULL;
}
| '<' identifier
{
$$ = $2;
}
;
class_fields: /* empty */
{
$$ = new std::vector<Field>();
}
| class_fields class_field
{
$$->push_back(*$2);
delete $2;
}
;
field_type: identifier
{
$$ = new FieldType();
$$->IsName = false;
$$->TypeName = $1;
free($1);
}
| T_NAME '(' identifier ')'
{
$$ = new FieldType();
$$->IsName = true;
$$->TypeName = $3;
$$->ArrayRank = 0;
free($3);
}
| T_ARRAY '(' field_type ')'
{
$$ = $3;
$$->ArrayRank++;
}
;
class_field: field_attribute_list field_type identifier alternative_name_specifier field_accessor_list ';'
{
Field *field = $1;
if ((field->Attributes & (FAConfig | FAState)) == 0)
field->Attributes |= FAEphemeral;
field->Type = *$2;
delete $2;
field->Name = $3;
std::free($3);
if ($4) {
field->AlternativeName = $4;
std::free($4);
}
std::vector<FieldAccessor>::const_iterator it;
for (it = $5->begin(); it != $5->end(); it++) {
switch (it->Type) {
case FTGet:
field->GetAccessor = it->Accessor;
field->PureGetAccessor = it->Pure;
break;
case FTSet:
field->SetAccessor = it->Accessor;
field->PureSetAccessor = it->Pure;
break;
case FTDefault:
field->DefaultAccessor = it->Accessor;
break;
case FTTrack:
field->TrackAccessor = it->Accessor;
break;
case FTNavigate:
field->NavigateAccessor = it->Accessor;
field->PureNavigateAccessor = it->Pure;
break;
}
}
delete $5;
$$ = field;
}
| T_LOAD_AFTER identifier ';'
{
auto *field = new Field();
field->Attributes = FALoadDependency;
field->Name = $2;
std::free($2);
$$ = field;
}
| T_ACTIVATION_PRIORITY T_NUMBER ';'
{
auto *field = new Field();
field->Attributes = FAActivationPriority;
field->Priority = $2;
$$ = field;
}
;
alternative_name_specifier: /* empty */
{
$$ = NULL;
}
| '(' identifier ')'
{
$$ = $2;
}
;
field_attribute_list: /* empty */
{
$$ = new Field();
}
| '[' field_attributes ']'
{
$$ = $2;
}
;
field_attribute: T_FIELD_ATTRIBUTE
{
$$ = new Field();
$$->Attributes = $1;
}
| T_REQUIRED
{
$$ = new Field();
$$->Attributes = FARequired;
}
| T_NAVIGATION '(' identifier ')'
{
$$ = new Field();
$$->Attributes = FANavigation;
$$->NavigationName = $3;
std::free($3);
}
| T_NAVIGATION
{
$$ = new Field();
$$->Attributes = FANavigation;
}
;
field_attributes: /* empty */
{
$$ = new Field();
}
| field_attributes ',' field_attribute
{
$$ = $1;
$$->Attributes |= $3->Attributes;
if (!$3->NavigationName.empty())
$$->NavigationName = $3->NavigationName;
delete $3;
}
| field_attribute
{
$$ = $1;
}
;
field_accessor_list: /* empty */
{
$$ = new std::vector<FieldAccessor>();
}
| '{' field_accessors '}'
{
$$ = $2;
}
;
field_accessors: /* empty */
{
$$ = new std::vector<FieldAccessor>();
}
| field_accessors field_accessor
{
$$ = $1;
$$->push_back(*$2);
delete $2;
}
;
field_accessor: T_FIELD_ACCESSOR_TYPE T_STRING
{
$$ = new FieldAccessor(static_cast<FieldAccessorType>($1), $2, false);
std::free($2);
}
| T_FIELD_ACCESSOR_TYPE ';'
{
$$ = new FieldAccessor(static_cast<FieldAccessorType>($1), "", true);
}
;
validator_rules: /* empty */
{
$$ = new std::vector<Rule>();
}
| validator_rules validator_rule
{
$$->push_back(*$2);
delete $2;
}
;
validator_rule: T_NAME '(' T_IDENTIFIER ')' identifier ';'
{
$$ = new Rule();
$$->Attributes = 0;
$$->IsName = true;
$$->Type = $3;
std::free($3);
$$->Pattern = $5;
std::free($5);
}
| T_IDENTIFIER identifier ';'
{
$$ = new Rule();
$$->Attributes = 0;
$$->IsName = false;
$$->Type = $1;
std::free($1);
$$->Pattern = $2;
std::free($2);
}
| T_NAME '(' T_IDENTIFIER ')' identifier '{' validator_rules '}' ';'
{
$$ = new Rule();
$$->Attributes = 0;
$$->IsName = true;
$$->Type = $3;
std::free($3);
$$->Pattern = $5;
std::free($5);
$$->Rules = *$7;
delete $7;
}
| T_IDENTIFIER identifier '{' validator_rules '}' ';'
{
$$ = new Rule();
$$->Attributes = 0;
$$->IsName = false;
$$->Type = $1;
std::free($1);
$$->Pattern = $2;
std::free($2);
$$->Rules = *$4;
delete $4;
}
| T_REQUIRED identifier ';'
{
$$ = new Rule();
$$->Attributes = RARequired;
$$->IsName = false;
$$->Type = "";
$$->Pattern = $2;
std::free($2);
}
;
validator: T_VALIDATOR T_IDENTIFIER '{' validator_rules '}' ';'
{
$$ = new Validator();
$$->Name = $2;
std::free($2);
$$->Rules = *$4;
delete $4;
}
;
identifier: T_IDENTIFIER
| T_STRING
{
$$ = $1;
}
;
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