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/* parser.y (Bison file) */
%{
#define PARSER_SOURCE
#include <fstream>
#include <filesystem>
#include "system.pb.h" // Include the generated protobuf header
#include "lexer.h"
#define yylex lexer.yynlex
using namespace std;
Entry::System msg;
bool legacy = true;
%}
%language "c++"
%require "3.2"
%define api.token.constructor
%define api.value.type variant
%define parse.error detailed
%define parse.trace true
%code requires // *.hh
{
#include <cstdint>
#include "lexer.h"
#include "system.loc.hh"
}
//%locations
//%define api.location.type {yy::location}
%parse-param {Lexer<symbol_type> &lexer}
%token <uint64_t> NUM
%token <double> FRC
%token <int> TOKEN
%token BREAK BLANK START END VERSION CPU BASE USER NICE
%token SYSP IDLE IOWP IRQP SIRQ CORE MEM TOTAL AVAIL CACHE
%token SHARED TSWAP USWAP TEMP CURR TMIN TMAX TAVG COLON SLASH
%%
// Grammar Rules
start:
block
| start block
;
block:
block_start data_block block_end
;
block_start:
START BLANK NUM BREAK {
cout << "begin\t" << $NUM << endl;
msg.set_epoch($<uint64_t>3);
}
;
block_end:
END BLANK NUM BREAK {
if ($<uint64_t>3 == msg.epoch()) {
cout << "end\t" << $NUM << endl;
auto p = filesystem::path("proto");
p /= to_string($<uint64_t>3);
p += string(".proto");
ofstream f(p, ios_base::out | ios_base::binary);
msg.SerializeToOstream(&f);
f.close();
}
msg.Clear();
}
data_block:
version_block data_list
;
version_block:
VERSION BLANK NUM BLANK NUM BREAK {
legacy = false;
cout << "ver\t" << $3 << "\t" << $5 << endl;
}
| /* legacy */ {
cout << "ver\tlegacy" << endl;
}
;
data_list:
data BREAK | data BREAK data_list;
data:
CPU BLANK cpu_block
| MEM BLANK mem_block
| TEMP BLANK temp_block
;
cpu_percent:
USER { $<int>$ = yylhs.kind(); cout << $<int>$; }
| NICE { $<int>$ = yylhs.kind(); }
| SYSP { $<int>$ = yylhs.kind(); }
| IDLE { $<int>$ = yylhs.kind(); }
| IOWP { $<int>$ = yylhs.kind(); }
| IRQP { $<int>$ = yylhs.kind(); }
| SIRQ { $<int>$ = yylhs.kind(); };
cpu_block:
BASE BLANK FRC BLANK NUM {
([&] (auto base) {
base->set_usage($<double>3);
base->set_clock($<uint64_t>5);
cout << "cpu\tbase\t" << base->usage() << "\t" << base->clock() << endl;
})(msg.mutable_cpu()->mutable_base());
}
| cpu_percent BLANK FRC BLANK FRC {
cout << $<int>1 << endl;
string name = ([&](auto t) {
switch(t) {
case token_type::USER: return "user";
case token_type::NICE: return "nice";
case token_type::SYSP: return "system";
case token_type::IDLE: return "idle";
case token_type::IOWP: return "iowait";
case token_type::IRQP: return "hwirq";
case token_type::SIRQ: return "swirq";
default: return "undefined";
}
})($<int>1);
([&] (auto a, auto b) -> void {
::Entry::CPUStats_Subsystem sys;
sys.set_curr(a);
sys.set_diff(b);
msg.mutable_cpu()->mutable_subsystem()->insert({name, sys});
cout << "cpu\t" << name << "%\t" << msg.cpu().subsystem().at(name).curr()
<< "\t" << msg.cpu().subsystem().at(name).diff() << endl;
})($<double>3, $<double>5);
}
| CORE NUM BLANK FRC BLANK NUM {
([&] (auto core, auto a, auto b) -> void {
::Entry::CPUStats_Core c;
c.set_usage(a);
c.set_clock(b);
msg.mutable_cpu()->mutable_cores()->insert({core, c});
cout << "cpu\tcore:" << core << "\t" << msg.cpu().cores().at(core).usage()
<< "\t" << msg.cpu().cores().at(core).clock() << endl;
})($<uint64_t>2, $<double>4, $<uint64_t>6);
}
;
mem_type:
TOTAL { $<int>$ = 1; }
| AVAIL { $<int>$ = 2; }
| CACHE { $<int>$ = 3; }
| SHARED { $<int>$ = 4; }
| TSWAP { $<int>$ = 5; }
| USWAP { $<int>$ = 6; }
;
mem_block:
mem_type BLANK NUM {
([&](auto mem, int t, uint64_t v) {
cerr << yystack_[2].kind() << ":" << endl;
cout << "mem\t";
switch((int)t) {
case token_type::TOTAL: mem->set_total(v); cout << "\ttotal" << msg.mem().total(); break;
case token_type::AVAIL: mem->set_avail(v); cout << "\tavail" << msg.mem().avail(); break;
case token_type::CACHE: mem->set_cache(v); cout << "\tcache" << msg.mem().cache(); break;
case token_type::SHARED:mem->set_share(v); cout << "\tshare" << msg.mem().share(); break;
case token_type::TSWAP: mem->set_tswap(v); cout << "\ttswap" << msg.mem().tswap(); break;
case token_type::USWAP: mem->set_uswap(v); cout << "\tuswap" << msg.mem().uswap(); break;
default: break;
}
cout << endl;
})(msg.mutable_mem(), $<int>1, $<uint64_t>3);
}
;
temp_block:
tmp_current
| tmp_legacy
;
tmp_current_type: CURR | TMIN | TMAX | TAVG;
tmp_current:
tmp_current_type BLANK NUM {
if (legacy) throw syntax_error("TEMP Block in legacy data.");
using token = yy::parser::token::token_kind_type;
([&](auto tmp, token t, uint64_t v) {
switch(t) {
case token::CURR: tmp->set_cur(v); break;
case token::TMIN: tmp->set_min(v); break;
case token::TMAX: tmp->set_max(v); break;
case token::TAVG: tmp->set_avg(v); break;
default: break;
}
})(msg.mutable_tmp(), $<token>1, $<uint64_t>3);
}
;
tmp_legacy:
;
%%
namespace yy
{
// Report an error to the user.
auto parser::error (const std::string& msg) -> void
{
std::cerr << msg << " on line " << lexer.lineno() << '\n';
}
}
int main() {
Lexer<yy::parser::symbol_type> lexer;
yy::parser parse(lexer);
return parse();
}
|
