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sandeshy.yy
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sandeshy.yy
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%{
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
/**
* Thrift parser.
*
* This parser is used on a thrift definition file.
*/
#ifdef SANDESH
/**
* Sandesh parser.
*
* This parser is used on a sandesh definition file.
*
* sandesh domain specific langauge is derived from apache thrift and
* much of thrift code is reused.
*/
#endif
#define __STDC_LIMIT_MACROS
#define __STDC_FORMAT_MACROS
#include <stdio.h>
#include <inttypes.h>
#include <limits.h>
#include "main.h"
#include "globals.h"
#include "parse/t_program.h"
#include "parse/t_scope.h"
/**
* This global variable is used for automatic numbering of field indices etc.
* when parsing the members of a struct. Field values are automatically
* assigned starting from -1 and working their way down.
*/
int y_field_val = -1;
int g_arglist = 0;
const int struct_is_struct = 0;
const int struct_is_union = 1;
%}
/**
* This structure is used by the parser to hold the data types associated with
* various parse nodes.
*/
%union {
char* id;
int64_t iconst;
double dconst;
bool tbool;
t_doc* tdoc;
t_type* ttype;
t_base_type* tbase;
t_typedef* ttypedef;
t_enum* tenum;
t_enum_value* tenumv;
t_const* tconst;
t_const_value* tconstv;
t_struct* tstruct;
t_service* tservice;
t_function* tfunction;
t_field* tfield;
char* dtext;
t_field::e_req ereq;
t_annotation* tannot;
t_field_id tfieldid;
t_sandesh* tsandesh;
}
/**
* Strings identifier
*/
%token<id> tok_identifier
%token<id> tok_literal
%token<dtext> tok_doctext
%token<id> tok_st_identifier
%token<id> tok_format
/**
* Constant values
*/
%token<iconst> tok_int_constant
%token<dconst> tok_dub_constant
/**
* Header keywords
*/
%token tok_include
%token tok_namespace
%token tok_cpp_namespace
%token tok_cpp_include
%token tok_cpp_type
%token tok_php_namespace
%token tok_py_module
%token tok_perl_package
%token tok_java_package
%token tok_xsd_all
%token tok_xsd_optional
%token tok_xsd_nillable
%token tok_xsd_namespace
%token tok_xsd_attrs
%token tok_ruby_namespace
%token tok_smalltalk_category
%token tok_smalltalk_prefix
%token tok_cocoa_prefix
%token tok_csharp_namespace
%token tok_delphi_namespace
/**
* Base datatype keywords
*/
%token tok_void
%token tok_bool
%token tok_byte
%token tok_string
%token tok_binary
%token tok_slist
%token tok_senum
%token tok_i16
%token tok_i32
%token tok_i64
%token tok_double
%token tok_u16
%token tok_u32
%token tok_u64
%token tok_ipv4
%token tok_xml
%token tok_uuid_t
/**
* Complex type keywords
*/
%token tok_map
%token tok_list
%token tok_set
/**
* Function modifiers
*/
%token tok_oneway
%token tok_staticfunction
%token tok_abcfunction
/**
* Sandesh modifiers
*/
%token tok_system
%token tok_request
%token tok_response
%token tok_trace
%token tok_object
%token tok_flow
%token tok_buffer
%token tok_uve
%token tok_dynamic_uve
%token tok_trace_object
%token tok_alarm
/**
* Thrift language keywords
*/
%token tok_typedef
%token tok_struct
%token tok_xception
%token tok_throws
%token tok_extends
%token tok_service
%token tok_sandesh
%token tok_enum
%token tok_const
%token tok_required
%token tok_optional
%token tok_union
/**
* Grammar nodes
*/
%type<ttype> BaseType
%type<ttype> SimpleBaseType
%type<ttype> ContainerType
%type<ttype> SimpleContainerType
%type<ttype> MapType
%type<ttype> SetType
%type<ttype> ListType
%type<tdoc> Definition
%type<ttype> TypeDefinition
%type<ttypedef> Typedef
%type<ttype> TypeAnnotations
%type<ttype> TypeAnnotationList
%type<tannot> TypeAnnotation
%type<tfield> Field
%type<tfieldid> FieldIdentifier
%type<ereq> FieldRequiredness
%type<ttype> FieldType
%type<tconstv> FieldValue
%type<tstruct> FieldList
%type<tsandesh> SFieldList
%type<tenum> Enum
%type<tenum> EnumDefList
%type<tenumv> EnumDef
%type<ttypedef> Senum
%type<tbase> SenumDefList
%type<id> SenumDef
%type<tconst> Const
%type<tconstv> ConstValue
%type<tconstv> ConstList
%type<tconstv> ConstListContents
%type<tconstv> ConstMap
%type<tconstv> ConstMapContents
%type<iconst> StructHead
%type<tstruct> Struct
%type<tstruct> Xception
%type<tservice> Service
%type<tsandesh> Sandesh
%type<ttype> SandeshType
%type<tfunction> Function
%type<ttype> FunctionType
%type<tservice> FunctionList
%type<tstruct> Throws
%type<tservice> Extends
%type<tbool> Oneway
%type<tbool> StaticFunction
%type<tbool> AbcFunction
%type<tbool> XsdAll
%type<tbool> XsdOptional
%type<tbool> XsdNillable
%type<tstruct> XsdAttributes
%type<id> CppType
%type<dtext> CaptureDocText
%%
/**
* Thrift Grammar Implementation.
*
* For the most part this source file works its way top down from what you
* might expect to find in a typical .thrift file, i.e. type definitions and
* namespaces up top followed by service definitions using those types.
*/
Program:
HeaderList DefinitionList
{
pdebug("Program -> Headers DefinitionList");
if((g_program_doctext_candidate != NULL) && (g_program_doctext_status != ALREADY_PROCESSED))
{
g_program->set_doc(g_program_doctext_candidate);
g_program_doctext_status = ALREADY_PROCESSED;
}
clear_doctext();
}
CaptureDocText:
{
if (g_parse_mode == PROGRAM) {
$$ = g_doctext;
g_doctext = NULL;
} else {
$$ = NULL;
}
}
/* TODO(dreiss): Try to DestroyDocText in all sorts or random places. */
DestroyDocText:
{
if (g_parse_mode == PROGRAM) {
clear_doctext();
}
}
/* We have to DestroyDocText here, otherwise it catches the doctext
on the first real element. */
HeaderList:
HeaderList DestroyDocText Header
{
pdebug("HeaderList -> HeaderList Header");
}
|
{
pdebug("HeaderList -> ");
}
Header:
Include
{
pdebug("Header -> Include");
}
| tok_namespace tok_identifier tok_identifier
{
pdebug("Header -> tok_namespace tok_identifier tok_identifier");
if (g_parse_mode == PROGRAM) {
g_program->set_namespace($2, $3);
}
}
| tok_namespace '*' tok_identifier
{
pdebug("Header -> tok_namespace * tok_identifier");
if (g_parse_mode == PROGRAM) {
g_program->set_namespace("*", $3);
}
}
/* TODO(dreiss): Get rid of this once everyone is using the new hotness. */
| tok_cpp_namespace tok_identifier
{
pwarning(1, "'cpp_namespace' is deprecated. Use 'namespace cpp' instead");
pdebug("Header -> tok_cpp_namespace tok_identifier");
if (g_parse_mode == PROGRAM) {
g_program->set_namespace("cpp", $2);
}
}
| tok_cpp_include tok_literal
{
pdebug("Header -> tok_cpp_include tok_literal");
if (g_parse_mode == PROGRAM) {
g_program->add_cpp_include($2);
}
}
| tok_php_namespace tok_identifier
{
pwarning(1, "'php_namespace' is deprecated. Use 'namespace php' instead");
pdebug("Header -> tok_php_namespace tok_identifier");
if (g_parse_mode == PROGRAM) {
g_program->set_namespace("php", $2);
}
}
/* TODO(dreiss): Get rid of this once everyone is using the new hotness. */
| tok_py_module tok_identifier
{
pwarning(1, "'py_module' is deprecated. Use 'namespace py' instead");
pdebug("Header -> tok_py_module tok_identifier");
if (g_parse_mode == PROGRAM) {
g_program->set_namespace("py", $2);
}
}
/* TODO(dreiss): Get rid of this once everyone is using the new hotness. */
| tok_perl_package tok_identifier
{
pwarning(1, "'perl_package' is deprecated. Use 'namespace perl' instead");
pdebug("Header -> tok_perl_namespace tok_identifier");
if (g_parse_mode == PROGRAM) {
g_program->set_namespace("perl", $2);
}
}
/* TODO(dreiss): Get rid of this once everyone is using the new hotness. */
| tok_ruby_namespace tok_identifier
{
pwarning(1, "'ruby_namespace' is deprecated. Use 'namespace rb' instead");
pdebug("Header -> tok_ruby_namespace tok_identifier");
if (g_parse_mode == PROGRAM) {
g_program->set_namespace("rb", $2);
}
}
/* TODO(dreiss): Get rid of this once everyone is using the new hotness. */
| tok_smalltalk_category tok_st_identifier
{
pwarning(1, "'smalltalk_category' is deprecated. Use 'namespace smalltalk.category' instead");
pdebug("Header -> tok_smalltalk_category tok_st_identifier");
if (g_parse_mode == PROGRAM) {
g_program->set_namespace("smalltalk.category", $2);
}
}
/* TODO(dreiss): Get rid of this once everyone is using the new hotness. */
| tok_smalltalk_prefix tok_identifier
{
pwarning(1, "'smalltalk_prefix' is deprecated. Use 'namespace smalltalk.prefix' instead");
pdebug("Header -> tok_smalltalk_prefix tok_identifier");
if (g_parse_mode == PROGRAM) {
g_program->set_namespace("smalltalk.prefix", $2);
}
}
/* TODO(dreiss): Get rid of this once everyone is using the new hotness. */
| tok_java_package tok_identifier
{
pwarning(1, "'java_package' is deprecated. Use 'namespace java' instead");
pdebug("Header -> tok_java_package tok_identifier");
if (g_parse_mode == PROGRAM) {
g_program->set_namespace("java", $2);
}
}
/* TODO(dreiss): Get rid of this once everyone is using the new hotness. */
| tok_cocoa_prefix tok_identifier
{
pwarning(1, "'cocoa_prefix' is deprecated. Use 'namespace cocoa' instead");
pdebug("Header -> tok_cocoa_prefix tok_identifier");
if (g_parse_mode == PROGRAM) {
g_program->set_namespace("cocoa", $2);
}
}
/* TODO(dreiss): Get rid of this once everyone is using the new hotness. */
| tok_xsd_namespace tok_literal
{
pwarning(1, "'xsd_namespace' is deprecated. Use 'namespace xsd' instead");
pdebug("Header -> tok_xsd_namespace tok_literal");
if (g_parse_mode == PROGRAM) {
g_program->set_namespace("cocoa", $2);
}
}
/* TODO(dreiss): Get rid of this once everyone is using the new hotness. */
| tok_csharp_namespace tok_identifier
{
pwarning(1, "'csharp_namespace' is deprecated. Use 'namespace csharp' instead");
pdebug("Header -> tok_csharp_namespace tok_identifier");
if (g_parse_mode == PROGRAM) {
g_program->set_namespace("csharp", $2);
}
}
/* TODO(dreiss): Get rid of this once everyone is using the new hotness. */
| tok_delphi_namespace tok_identifier
{
pwarning(1, "'delphi_namespace' is deprecated. Use 'namespace delphi' instead");
pdebug("Header -> tok_delphi_namespace tok_identifier");
if (g_parse_mode == PROGRAM) {
g_program->set_namespace("delphi", $2);
}
}
Include:
tok_include tok_literal
{
pdebug("Include -> tok_include tok_literal");
if (g_parse_mode == INCLUDES) {
std::string path = include_file(std::string($2));
if (!path.empty()) {
g_program->add_include(path, std::string($2));
}
}
}
DefinitionList:
DefinitionList CaptureDocText Definition
{
pdebug("DefinitionList -> DefinitionList Definition");
if ($2 != NULL && $3 != NULL) {
$3->set_doc($2);
}
}
|
{
pdebug("DefinitionList -> ");
}
Definition:
Const
{
pdebug("Definition -> Const");
if (g_parse_mode == PROGRAM) {
g_program->add_const($1);
}
$$ = $1;
}
| TypeDefinition
{
pdebug("Definition -> TypeDefinition");
if (g_parse_mode == PROGRAM) {
g_scope->add_type($1->get_name(), $1);
if (g_parent_scope != NULL) {
g_parent_scope->add_type(g_parent_prefix + $1->get_name(), $1);
}
}
$$ = $1;
}
| Service
{
pdebug("Definition -> Service");
if (g_parse_mode == PROGRAM) {
g_scope->add_service($1->get_name(), $1);
if (g_parent_scope != NULL) {
g_parent_scope->add_service(g_parent_prefix + $1->get_name(), $1);
}
g_program->add_service($1);
}
$$ = $1;
}
| Sandesh
{
pdebug("Definition -> Sandesh");
if (g_parse_mode == PROGRAM) {
if (g_scope->get_sandesh($1->get_name())) {
yyerror("Duplicate definition of sandesh: %s ", $1->get_name().c_str());
exit(1);
}
g_scope->add_sandesh($1->get_name(), $1);
if (g_parent_scope != NULL) {
g_parent_scope->add_sandesh(g_parent_prefix + $1->get_name(), $1);
}
g_program->add_sandesh($1);
}
$$ = $1;
}
TypeDefinition:
Typedef
{
pdebug("TypeDefinition -> Typedef");
if (g_parse_mode == PROGRAM) {
g_program->add_typedef($1);
}
}
| Enum
{
pdebug("TypeDefinition -> Enum");
if (g_parse_mode == PROGRAM) {
g_program->add_enum($1);
}
}
| Senum
{
pdebug("TypeDefinition -> Senum");
if (g_parse_mode == PROGRAM) {
g_program->add_typedef($1);
}
}
| Struct
{
pdebug("TypeDefinition -> Struct");
if (g_parse_mode == PROGRAM) {
g_program->add_struct($1);
}
}
| Xception
{
pdebug("TypeDefinition -> Xception");
if (g_parse_mode == PROGRAM) {
g_program->add_xception($1);
}
}
Typedef:
tok_typedef FieldType tok_identifier
{
pdebug("TypeDef -> tok_typedef FieldType tok_identifier");
t_typedef *td = new t_typedef(g_program, $2, $3);
$$ = td;
}
CommaOrSemicolonOptional:
','
{}
| ';'
{}
|
{}
Enum:
tok_enum tok_identifier '{' EnumDefList '}'
{
pdebug("Enum -> tok_enum tok_identifier { EnumDefList }");
$$ = $4;
$$->set_name($2);
$$->resolve_values();
// make constants for all the enum values
if (g_parse_mode == PROGRAM) {
const std::vector<t_enum_value*>& enum_values = $$->get_constants();
std::vector<t_enum_value*>::const_iterator c_iter;
for (c_iter = enum_values.begin(); c_iter != enum_values.end(); ++c_iter) {
std::string const_name = $$->get_name() + "." + (*c_iter)->get_name();
t_const_value* const_val = new t_const_value((*c_iter)->get_value());
const_val->set_enum($$);
g_scope->add_constant(const_name, new t_const(g_type_i32, (*c_iter)->get_name(), const_val));
if (g_parent_scope != NULL) {
g_parent_scope->add_constant(g_parent_prefix + const_name, new t_const(g_type_i32, (*c_iter)->get_name(), const_val));
}
}
}
}
EnumDefList:
EnumDefList EnumDef
{
pdebug("EnumDefList -> EnumDefList EnumDef");
$$ = $1;
$$->append($2);
}
|
{
pdebug("EnumDefList -> ");
$$ = new t_enum(g_program);
}
EnumDef:
CaptureDocText tok_identifier '=' tok_int_constant CommaOrSemicolonOptional
{
pdebug("EnumDef -> tok_identifier = tok_int_constant");
if ($4 < 0) {
pwarning(1, "Negative value supplied for enum %s.\n", $2);
}
if ($4 > INT_MAX) {
pwarning(1, "64-bit value supplied for enum %s.\n", $2);
}
$$ = new t_enum_value($2, $4);
if ($1 != NULL) {
$$->set_doc($1);
}
}
|
CaptureDocText tok_identifier CommaOrSemicolonOptional
{
pdebug("EnumDef -> tok_identifier");
$$ = new t_enum_value($2);
if ($1 != NULL) {
$$->set_doc($1);
}
}
Senum:
tok_senum tok_identifier '{' SenumDefList '}'
{
pdebug("Senum -> tok_senum tok_identifier { SenumDefList }");
$$ = new t_typedef(g_program, $4, $2);
}
SenumDefList:
SenumDefList SenumDef
{
pdebug("SenumDefList -> SenumDefList SenumDef");
$$ = $1;
$$->add_string_enum_val($2);
}
|
{
pdebug("SenumDefList -> ");
$$ = new t_base_type("string", t_base_type::TYPE_STRING);
$$->set_string_enum(true);
}
SenumDef:
tok_literal CommaOrSemicolonOptional
{
pdebug("SenumDef -> tok_literal");
$$ = $1;
}
Const:
tok_const FieldType tok_identifier '=' ConstValue CommaOrSemicolonOptional
{
pdebug("Const -> tok_const FieldType tok_identifier = ConstValue");
if (g_parse_mode == PROGRAM) {
g_scope->resolve_const_value($5, $2);
$$ = new t_const($2, $3, $5);
validate_const_type($$);
g_scope->add_constant($3, $$);
if (g_parent_scope != NULL) {
g_parent_scope->add_constant(g_parent_prefix + $3, $$);
}
} else {
$$ = NULL;
}
}
ConstValue:
tok_int_constant
{
pdebug("ConstValue => tok_int_constant");
$$ = new t_const_value();
$$->set_integer($1);
if (!g_allow_64bit_consts && ($1 < INT32_MIN || $1 > INT32_MAX)) {
pwarning(1, "64-bit constant \"%"PRIi64"\" may not work in all languages.\n", $1);
}
}
| tok_dub_constant
{
pdebug("ConstValue => tok_dub_constant");
$$ = new t_const_value();
$$->set_double($1);
}
| tok_literal
{
pdebug("ConstValue => tok_literal");
$$ = new t_const_value($1);
}
| tok_identifier
{
pdebug("ConstValue => tok_identifier");
$$ = new t_const_value();
$$->set_identifier($1);
}
| ConstList
{
pdebug("ConstValue => ConstList");
$$ = $1;
}
| ConstMap
{
pdebug("ConstValue => ConstMap");
$$ = $1;
}
ConstList:
'[' ConstListContents ']'
{
pdebug("ConstList => [ ConstListContents ]");
$$ = $2;
}
ConstListContents:
ConstListContents ConstValue CommaOrSemicolonOptional
{
pdebug("ConstListContents => ConstListContents ConstValue CommaOrSemicolonOptional");
$$ = $1;
$$->add_list($2);
}
|
{
pdebug("ConstListContents =>");
$$ = new t_const_value();
$$->set_list();
}
ConstMap:
'{' ConstMapContents '}'
{
pdebug("ConstMap => { ConstMapContents }");
$$ = $2;
}
ConstMapContents:
ConstMapContents ConstValue ':' ConstValue CommaOrSemicolonOptional
{
pdebug("ConstMapContents => ConstMapContents ConstValue CommaOrSemicolonOptional");
$$ = $1;
$$->add_map($2, $4);
}
|
{
pdebug("ConstMapContents =>");
$$ = new t_const_value();
$$->set_map();
}
StructHead:
tok_struct
{
$$ = struct_is_struct;
}
| tok_union
{
$$ = struct_is_union;
}
Struct:
StructHead tok_identifier XsdAll '{' FieldList '}' TypeAnnotations
{
pdebug("Struct -> tok_struct tok_identifier { FieldList }");
$5->set_xsd_all($3);
$5->set_union($1 == struct_is_union);
$$ = $5;
$$->set_name($2);
if ($7 != NULL) {
$$->annotations_ = $7->annotations_;
delete $7;
}
}
XsdAll:
tok_xsd_all
{
$$ = true;
}
|
{
$$ = false;
}
XsdOptional:
tok_xsd_optional
{
$$ = true;
}
|
{
$$ = false;
}
XsdNillable:
tok_xsd_nillable
{
$$ = true;
}
|
{
$$ = false;
}
XsdAttributes:
tok_xsd_attrs '{' FieldList '}'
{
$$ = $3;
}
|
{
$$ = NULL;
}
Xception:
tok_xception tok_identifier '{' FieldList '}'
{
pdebug("Xception -> tok_xception tok_identifier { FieldList }");
$4->set_name($2);
$4->set_xception(true);
$$ = $4;
}
Sandesh:
SandeshType tok_sandesh tok_identifier '{' SFieldList '}'
{
pdebug("Sandesh -> tok_sandesh tok_identifier { SFieldList }");
$5->set_name($3);
$5->set_type($1);
if (($1 != g_type_sandesh_request) &&
($1 != g_type_sandesh_response)) {
if ($5->exist_opt_field()) {
yyerror("optional field not supported in sandesh");
exit(1);
}
}
if ($1 == g_type_sandesh_response) {
$5->append(new t_field(g_type_bool, "more", 0, true));
} else if ($1 == g_type_sandesh_request) {
} else if ($1 == g_type_sandesh_system || $1 == g_type_sandesh_object) {
$5->append(new t_field(g_type_string, "file", SHRT_MIN, true));
$5->append(new t_field(g_type_i32, "line", SHRT_MIN + 1, true));
} else if ($1 == g_type_sandesh_trace || $1 == g_type_sandesh_trace_object) {
$5->append(new t_field(g_type_string, "file", SHRT_MIN, true));
$5->append(new t_field(g_type_i32, "line", SHRT_MIN + 1, true));
}
$$ = $5;
}
SandeshType:
tok_system
{
$$ = g_type_sandesh_system;
}
|
tok_request
{
$$ = g_type_sandesh_request;
}
|
tok_response
{
$$ = g_type_sandesh_response;
}
|
tok_trace
{
$$ = g_type_sandesh_trace;
}
|
tok_trace_object
{
$$ = g_type_sandesh_trace_object;
}
|
tok_buffer
{
$$ = g_type_sandesh_buffer;
}
|
tok_uve
{
$$ = g_type_sandesh_uve;
}
|
tok_dynamic_uve
{
$$ = g_type_sandesh_dynamic_uve;
}
|
tok_object
{
$$ = g_type_sandesh_object;
}
|
tok_flow
{
$$ = g_type_sandesh_flow;
}
|
tok_alarm
{
$$ = g_type_sandesh_alarm;
}
Service:
tok_service tok_identifier Extends '{' FlagArgs FunctionList UnflagArgs '}'
{
pdebug("Service -> tok_service tok_identifier { FunctionList }");
$$ = $6;
$$->set_name($2);
$$->set_extends($3);
}
FlagArgs:
{
g_arglist = 1;
}
UnflagArgs:
{
g_arglist = 0;
}
Extends:
tok_extends tok_identifier
{
pdebug("Extends -> tok_extends tok_identifier");
$$ = NULL;
if (g_parse_mode == PROGRAM) {
$$ = g_scope->get_service($2);
if ($$ == NULL) {
yyerror("Service \"%s\" has not been defined.", $2);
exit(1);
}
}
}
|
{
$$ = NULL;
}
FunctionList:
FunctionList Function
{
pdebug("FunctionList -> FunctionList Function");
$$ = $1;
$1->add_function($2);
}
|
{
pdebug("FunctionList -> ");
$$ = new t_service(g_program);
}
Function:
CaptureDocText Oneway AbcFunction StaticFunction FunctionType tok_identifier '(' FieldList ')' Throws CommaOrSemicolonOptional
{
$8->set_name(std::string($6) + "_args");
$$ = new t_function($5, $6, $8, $10, $2, $3, $4);
if ($1 != NULL) {
$$->set_doc($1);
}
}
Oneway:
tok_oneway
{
$$ = true;
}
|
{
$$ = false;
}
StaticFunction:
tok_staticfunction
{
$$ = true;
}
|
{
$$ = false;
}
AbcFunction: