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Nasal-Interpreter
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Merge pull request #28 from ValKmjolnir/develop 

✨ finish simple repl interpreter (experimental)
This commit is contained in:
Li Haokun 2023-09-18 00:50:54 +08:00 committed by GitHub
parent 0c99eb15f0 d0d9ce3b80
commit 38920382ea
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
35 changed files with 610 additions and 453 deletions
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14
module/fib.cpp
View File

@ -3,7 +3,8 @@
#include <iostream>
#include "../src/nasal.h"
namespace nasal_fib_module {
namespace nasal {
namespace fib_module {
double fibonaci(double x) {
if (x<=2) {
@ -41,9 +42,10 @@ const auto ghost_for_test = "ghost_for_test";
void ghost_for_test_destructor(void* ptr) {
std::cout << "ghost_for_test::destructor (0x";
std::cout << std::hex << (u64)ptr << std::dec << ") {\n";
delete (u32*)ptr;
std::cout << " delete 0x" << std::hex << (u64)ptr << std::dec << ";\n";
std::cout << std::hex << reinterpret_cast<u64>(ptr) << std::dec << ") {\n";
delete static_cast<u32*>(ptr);
std::cout << " delete 0x" << std::hex;
std::cout << reinterpret_cast<u64>(ptr) << std::dec << ";\n";
std::cout << "}\n";
}
@ -88,5 +90,7 @@ module_func_info func_tbl[] = {
}
extern "C" module_func_info* get() {
return nasal_fib_module::func_tbl;
return fib_module::func_tbl;
}
}

7
module/keyboard.cpp
View File

@ -12,6 +12,8 @@
#include <termios.h>
#endif
namespace nasal {
class noecho_input {
private:
#ifndef _WIN32
@ -33,12 +35,14 @@ public:
tcsetattr(0, TCSANOW, &new_termios);
#endif
}
~noecho_input() {
#ifndef _WIN32
tcflush(0, TCIOFLUSH);
tcsetattr(0, TCSANOW, &init_termios);
#endif
}
int noecho_kbhit() {
#ifndef _WIN32
unsigned char ch = 0;
@ -59,6 +63,7 @@ public:
return kbhit();
#endif
}
int noecho_getch() {
#ifndef _WIN32
int ch = 0;
@ -102,3 +107,5 @@ module_func_info func_tbl[]={
extern "C" module_func_info* get() {
return func_tbl;
}
}

4
module/matrix.cpp
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@ -1,6 +1,8 @@
#include "../src/nasal.h"
#include <cmath>
namespace nasal {
var nas_vec2(var* args, usize size, gc* ngc) {
var res = ngc->alloc(vm_vec);
res.vec().elems.push_back(args[0]);
@ -294,3 +296,5 @@ module_func_info func_tbl[]={
extern "C" module_func_info* get() {
return func_tbl;
}
}

44
module/nasocket.cpp
View File

@ -28,6 +28,8 @@ static WSAmanager win;
#include <netinet/in.h>
#endif
namespace nasal {
var nas_socket(var* args, usize size, gc* ngc) {
if (args[0].type!=vm_num || args[1].type!=vm_num || args[2].type!=vm_num)
return nas_err("socket", "\"af\", \"type\", \"protocol\" should be number");
@ -89,7 +91,11 @@ var nas_connect(var* args, usize size, gc* ngc) {
addr.sin_port = htons(args[2].num());
hostent* entry = gethostbyname(args[1].str().c_str());
memcpy(&addr.sin_addr, entry->h_addr, entry->h_length);
return var::num((double)connect(args[0].num(),(sockaddr*)&addr,sizeof(sockaddr_in)));
return var::num((double)connect(
args[0].num(),
(sockaddr*)&addr,
sizeof(sockaddr_in)
));
}
var nas_accept(var* args, usize size, gc* ngc) {
@ -117,7 +123,12 @@ var nas_send(var* args, usize size, gc* ngc) {
return nas_err("send", "\"buff\" must be a string");
if (args[2].type!=vm_num)
return nas_err("send", "\"flags\" muse be a number");
return var::num((double)send(args[0].num(),args[1].str().c_str(),args[1].str().length(),args[2].num()));
return var::num((double)send(
args[0].num(),
args[1].str().c_str(),
args[1].str().length(),
args[2].num()
));
}
var nas_sendto(var* args, usize size, gc* ngc) {
@ -137,7 +148,14 @@ var nas_sendto(var* args, usize size, gc* ngc) {
addr.sin_port = htons(args[2].num());
hostent* entry = gethostbyname(args[1].str().c_str());
memcpy(&addr.sin_addr, entry->h_addr, entry->h_length);
return var::num((double)sendto(args[0].num(),args[3].str().c_str(),args[3].str().length(),args[4].num(),(sockaddr*)&addr,sizeof(sockaddr_in)));
return var::num((double)sendto(
args[0].num(),
args[3].str().c_str(),
args[3].str().length(),
args[4].num(),
(sockaddr*)&addr,
sizeof(sockaddr_in)
));
}
var nas_recv(var* args, usize size, gc* ngc) {
@ -176,9 +194,23 @@ var nas_recvfrom(var* args, usize size, gc* ngc) {
auto& hash = res.hash().elems;
char* buf = new char[(int)args[1].num()+1];
#ifdef _WIN32
auto recvsize=recvfrom(args[0].num(),buf,args[1].num(),args[2].num(),(sockaddr*)&addr,&socklen);
auto recvsize = recvfrom(
args[0].num(),
buf,
args[1].num(),
args[2].num(),
(sockaddr*)&addr,
&socklen
);
#else
auto recvsize=recvfrom(args[0].num(),buf,args[1].num(),args[2].num(),(sockaddr*)&addr,(socklen_t*)&socklen);
auto recvsize = recvfrom(
args[0].num(),
buf,
args[1].num(),
args[2].num(),
(sockaddr*)&addr,
(socklen_t*)&socklen
);
#endif
hash["size"] = var::num((double)recvsize);
buf[recvsize>=0? recvsize:0] = 0;
@ -212,3 +244,5 @@ module_func_info func_tbl[]={
extern "C" module_func_info* get() {
return func_tbl;
}
}

44
src/bits_lib.cpp
View File

@ -1,23 +1,37 @@
#include "bits_lib.h"
namespace nasal {
var builtin_u32xor(var* local, gc& ngc) {
return var::num((f64)(u32(local[1].num())^u32(local[2].num())));
return var::num(static_cast<f64>(
static_cast<u32>(local[1].num()) ^
static_cast<u32>(local[2].num())
));
}
var builtin_u32and(var* local, gc& ngc) {
return var::num((f64)(u32(local[1].num())&u32(local[2].num())));
return var::num(static_cast<f64>(
static_cast<u32>(local[1].num()) &
static_cast<u32>(local[2].num())
));
}
var builtin_u32or(var* local, gc& ngc) {
return var::num((f64)(u32(local[1].num())|u32(local[2].num())));
return var::num(static_cast<f64>(
static_cast<u32>(local[1].num()) |
static_cast<u32>(local[2].num())
));
}
var builtin_u32nand(var* local, gc& ngc) {
return var::num((f64)(u32)(~(u32(local[1].num())&u32(local[2].num()))));
return var::num(static_cast<f64>(~(
static_cast<u32>(local[1].num()) &
static_cast<u32>(local[2].num())
)));
}
var builtin_u32not(var* local, gc& ngc) {
return var::num((f64)(u32)(~u32(local[1].num())));
return var::num(static_cast<f64>(~static_cast<u32>(local[1].num())));
}
var builtin_fld(var* local, gc& ngc) {
@ -33,8 +47,8 @@ var builtin_fld(var* local, gc& ngc) {
if (startbit.type!=vm_num || length.type!=vm_num) {
return nas_err("fld", "\"startbit\",\"len\" must be number");
}
u32 bit = (u32)startbit.num();
u32 len = (u32)length.num();
u32 bit = static_cast<u32>(startbit.num());
u32 len = static_cast<u32>(length.num());
if (bit+len>8*str.str().length()) {
return nas_err("fld", "bitfield out of bounds");
}
@ -45,7 +59,7 @@ var builtin_fld(var* local, gc& ngc) {
res |= 1<<(bit+len-i-1);
}
}
return var::num((f64)res);
return var::num(static_cast<f64>(res));
}
var builtin_sfld(var* local, gc& ngc) {
@ -62,8 +76,8 @@ var builtin_sfld(var* local, gc& ngc) {
if (startbit.type!=vm_num || length.type!=vm_num) {
return nas_err("sfld", "\"startbit\",\"len\" must be number");
}
u32 bit = (u32)startbit.num();
u32 len = (u32)length.num();
u32 bit = static_cast<u32>(startbit.num());
u32 len = static_cast<u32>(length.num());
if (bit+len>8*str.str().length()) {
return nas_err("sfld", "bitfield out of bounds");
}
@ -77,7 +91,7 @@ var builtin_sfld(var* local, gc& ngc) {
if (res&(1<<(len-1))) {
res |= ~((1<<len)-1);
}
return var::num((f64)((i32)res));
return var::num(static_cast<f64>(static_cast<i32>(res)));
}
var builtin_setfld(var* local, gc& ngc) {
@ -95,9 +109,9 @@ var builtin_setfld(var* local, gc& ngc) {
if (startbit.type!=vm_num || length.type!=vm_num || value.type!=vm_num) {
return nas_err("setfld", "\"startbit\",\"len\",\"val\" must be number");
}
u32 bit = (u32)startbit.num();
u32 len = (u32)length.num();
u64 val = (u64)value.num();
u32 bit = static_cast<u32>(startbit.num());
u32 len = static_cast<u32>(length.num());
u64 val = static_cast<u64>(value.num());
if (bit+len>8*str.str().length()) {
return nas_err("setfld", "bitfield out of bounds");
}
@ -135,3 +149,5 @@ nasal_builtin_table bits_native[] = {
{"__buf", builtin_buf},
{nullptr, nullptr}
};
}

4
src/bits_lib.h
View File

@ -4,6 +4,8 @@
#include "nasal_gc.h"
#include "nasal_builtin.h"
namespace nasal {
var builtin_u32xor(var*, gc&);
var builtin_u32and(var*, gc&);
var builtin_u32or(var*, gc&);
@ -15,3 +17,5 @@ var builtin_setfld(var*, gc&);
var builtin_buf(var*, gc&);
extern nasal_builtin_table bits_native[];
}

4
src/coroutine.cpp
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@ -1,5 +1,7 @@
#include "coroutine.h"
namespace nasal {
var builtin_cocreate(var* local, gc& ngc) {
// +-------------+
// | old pc | <- top[0]
@ -114,3 +116,5 @@ nasal_builtin_table coroutine_native[] = {
{"__corun", builtin_corun},
{nullptr, nullptr}
};
}

4
src/coroutine.h
View File

@ -4,6 +4,8 @@
#include "nasal_gc.h"
#include "nasal_builtin.h"
namespace nasal {
var builtin_cocreate(var*, gc&);
var builtin_coresume(var*, gc&);
var builtin_coyield(var*, gc&);
@ -11,3 +13,5 @@ var builtin_costatus(var*, gc&);
var builtin_corun(var*, gc&);
extern nasal_builtin_table coroutine_native[];
}

24
src/dylib_lib.cpp
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@ -1,11 +1,13 @@
#include "dylib_lib.h"
namespace nasal {
const auto dylib_type_name = "dylib";
const auto func_addr_type_name = "faddr";
void dylib_destructor(void* ptr) {
#ifdef _WIN32
FreeLibrary((HMODULE)ptr);
FreeLibrary(static_cast<HMODULE>(ptr));
#else
dlclose(ptr);
#endif
@ -39,7 +41,10 @@ var builtin_dlopen(var* local, gc& ngc) {
ret.hash().elems["lib"] = lib;
#ifdef _WIN32
void* func = (void*)GetProcAddress((HMODULE)lib.obj().ptr, "get");
void* func = (void*)GetProcAddress(
static_cast<HMODULE>(lib.obj().ptr),
"get"
);
#else
void* func = dlsym(lib.obj().ptr, "get");
#endif
@ -47,7 +52,7 @@ var builtin_dlopen(var* local, gc& ngc) {
return nas_err("dlopen", "cannot find <get> function");
}
// get function pointer by name
module_func_info* tbl = ((get_func_ptr)func)();
module_func_info* tbl = reinterpret_cast<get_func_ptr>(func)();
if (!tbl) {
return nas_err("dlopen", "failed to get module functions");
}
@ -78,7 +83,11 @@ var builtin_dlcallv(var* local, gc& ngc) {
return nas_err("dlcall", "\"ptr\" is not a valid function pointer");
}
auto& vec = args.vec().elems;
return ((module_func)fp.obj().ptr)(vec.data(), vec.size(), &ngc);
return reinterpret_cast<module_func>(fp.obj().ptr)(
vec.data(),
vec.size(),
&ngc
);
}
var builtin_dlcall(var* local, gc& ngc) {
@ -90,10 +99,11 @@ var builtin_dlcall(var* local, gc& ngc) {
var* local_frame_start = local+2;
usize local_frame_size = ngc.rctx->top-local_frame_start;
// arguments' stored place begins at local +2
return ((module_func)fp.obj().ptr)(
return reinterpret_cast<module_func>(fp.obj().ptr)(
local_frame_start,
local_frame_size,
&ngc);
&ngc
);
}
nasal_builtin_table dylib_lib_native[] = {
@ -103,3 +113,5 @@ nasal_builtin_table dylib_lib_native[] = {
{"__dlcall", builtin_dlcall},
{nullptr, nullptr}
};
}

4
src/dylib_lib.h
View File

@ -11,6 +11,8 @@
#include <sys/wait.h>
#endif
namespace nasal {
void dylib_destructor(void*);
void func_addr_destructor(void*);
@ -20,3 +22,5 @@ var builtin_dlcallv(var*, gc&);
var builtin_dlcall(var*, gc&);
extern nasal_builtin_table dylib_lib_native[];
}

7
src/fg_props.cpp
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@ -2,6 +2,8 @@
#include <fstream>
namespace nasal {
var builtin_logprint(var* local, gc& ngc) {
var level = local[1];
var elems = local[2];
@ -21,7 +23,8 @@ var builtin_logprint(var* local, gc& ngc) {
default:
return nas_err("logprint",
"incorrect log level " +
std::to_string(level.num()));
std::to_string(level.num())
);
}
for(auto& i : elems.vec().elems) {
out << i << " ";
@ -34,3 +37,5 @@ nasal_builtin_table flight_gear_native[] = {
{"_logprint", builtin_logprint},
{nullptr, nullptr}
};
}

4
src/fg_props.h
View File

@ -4,6 +4,8 @@
#include "nasal_gc.h"
#include "nasal_builtin.h"
namespace nasal {
#define SG_LOG_BULK 1
#define SG_LOG_DEBUG 2
#define SG_LOG_INFO 3
@ -16,3 +18,5 @@
var builtin_logprint(var*, gc&);
extern nasal_builtin_table flight_gear_native[];
}

51
src/io_lib.cpp
View File

@ -1,12 +1,14 @@
#include "io_lib.h"
namespace nasal {
const auto file_type_name = "file";
void filehandle_destructor(void* ptr) {
if ((FILE*)ptr==stdin) {
if (static_cast<FILE*>(ptr)==stdin) {
return;
}
fclose((FILE*)ptr);
fclose(static_cast<FILE*>(ptr));
}
var builtin_readfile(var* local, gc& ngc) {
@ -90,7 +92,7 @@ var builtin_read(var* local, gc& ngc) {
if (!buff) {
return nas_err("read", "malloc failed");
}
f64 res = fread(buff,1,len.num(), (FILE*)fd.obj().ptr);
f64 res = fread(buff, 1, len.num(), static_cast<FILE*>(fd.obj().ptr));
buf.str() = buff;
buf.val.gcobj->unmut = true;
delete []buff;
@ -106,7 +108,12 @@ var builtin_write(var* local, gc& ngc) {
if (str.type!=vm_str) {
return nas_err("write", "\"str\" must be string");
}
return var::num((f64)fwrite(str.str().c_str(), 1, str.str().length(), (FILE*)fd.obj().ptr));
return var::num(static_cast<f64>(fwrite(
str.str().c_str(),
1,
str.str().length(),
static_cast<FILE*>(fd.obj().ptr)
)));
}
var builtin_seek(var* local, gc& ngc) {
@ -116,7 +123,11 @@ var builtin_seek(var* local, gc& ngc) {
if (!fd.objchk(file_type_name)) {
return nas_err("seek", "not a valid filehandle");
}
return var::num((f64)fseek((FILE*)fd.obj().ptr, pos.num(), whence.num()));
return var::num(static_cast<f64>(fseek(
static_cast<FILE*>(fd.obj().ptr),
pos.num(),
whence.num()
)));
}
var builtin_tell(var* local, gc& ngc) {
@ -124,7 +135,7 @@ var builtin_tell(var* local, gc& ngc) {
if (!fd.objchk(file_type_name)) {
return nas_err("tell", "not a valid filehandle");
}
return var::num((f64)ftell((FILE*)fd.obj().ptr));
return var::num(static_cast<f64>(ftell(static_cast<FILE*>(fd.obj().ptr))));
}
var builtin_readln(var* local, gc& ngc) {
@ -134,7 +145,7 @@ var builtin_readln(var* local, gc& ngc) {
}
var str = ngc.alloc(vm_str);
char c;
while((c = fgetc((FILE*)fd.obj().ptr))!=EOF) {
while((c = fgetc(static_cast<FILE*>(fd.obj().ptr)))!=EOF) {
if (c=='\r') {
continue;
}
@ -160,17 +171,17 @@ var builtin_stat(var* local, gc& ngc) {
}
var ret = ngc.alloc(vm_vec);
ret.vec().elems = {
var::num((f64)buf.st_dev),
var::num((f64)buf.st_ino),
var::num((f64)buf.st_mode),
var::num((f64)buf.st_nlink),
var::num((f64)buf.st_uid),
var::num((f64)buf.st_gid),
var::num((f64)buf.st_rdev),
var::num((f64)buf.st_size),
var::num((f64)buf.st_atime),
var::num((f64)buf.st_mtime),
var::num((f64)buf.st_ctime)
var::num(static_cast<f64>(buf.st_dev)),
var::num(static_cast<f64>(buf.st_ino)),
var::num(static_cast<f64>(buf.st_mode)),
var::num(static_cast<f64>(buf.st_nlink)),
var::num(static_cast<f64>(buf.st_uid)),
var::num(static_cast<f64>(buf.st_gid)),
var::num(static_cast<f64>(buf.st_rdev)),
var::num(static_cast<f64>(buf.st_size)),
var::num(static_cast<f64>(buf.st_atime)),
var::num(static_cast<f64>(buf.st_mtime)),
var::num(static_cast<f64>(buf.st_ctime))
};
return ret;
}
@ -180,7 +191,7 @@ var builtin_eof(var* local, gc& ngc) {
if (!fd.objchk(file_type_name)) {
return nas_err("readln", "not a valid filehandle");
}
return var::num((f64)feof((FILE*)fd.obj().ptr));
return var::num(static_cast<f64>(feof(static_cast<FILE*>(fd.obj().ptr))));
}
nasal_builtin_table io_lib_native[] = {
@ -198,3 +209,5 @@ nasal_builtin_table io_lib_native[] = {
{"__eof", builtin_eof},
{nullptr, nullptr}
};
}

4
src/io_lib.h
View File

@ -10,6 +10,8 @@
#define F_OK 0 // fuck msc
#endif
namespace nasal {
void filehandle_destructor(void*);
var builtin_readfile(var*, gc&);
@ -26,3 +28,5 @@ var builtin_stat(var*, gc&);
var builtin_eof(var*, gc&);
extern nasal_builtin_table io_lib_native[];
}

5
src/main.cpp
View File

@ -52,7 +52,7 @@ std::ostream& help(std::ostream& out) {
<< " -t, --time | show execute time.\n"
<< " -d, --detail | get detail info.\n"
<< " -dbg, --debug | debug mode.\n"
<< " --prof | show profiling result, available under debug mode.\n"
<< " --prof | show profiling result, available in debug mode.\n"
<< " --prof-all | show profiling result of all files,"
<< "available under debug mode.\n"
<< "file:\n"
@ -154,7 +154,8 @@ void execute(
debugger->run(gen, ld, argv, cmd&VM_PROFILE, cmd&VM_PROF_ALL);
} else if (cmd&VM_TIME || cmd&VM_EXEC) {
auto runtime = std::unique_ptr<nasal::vm>(new nasal::vm);
runtime->run(gen, ld, argv, cmd&VM_DETAIL);
runtime->set_detail_report_info(cmd&VM_DETAIL);
runtime->run(gen, ld, argv);
}
// get running time

4
src/math_lib.cpp
View File

@ -1,5 +1,7 @@
#include "math_lib.h"
namespace nasal {
var builtin_pow(var* local, gc& ngc) {
var x = local[1];
var y = local[2];
@ -71,3 +73,5 @@ nasal_builtin_table math_lib_native[] = {
{"__isnan", builtin_isnan},
{nullptr, nullptr}
};
}

4
src/math_lib.h
View File

@ -4,6 +4,8 @@
#include "nasal_gc.h"
#include "nasal_builtin.h"
namespace nasal {
var builtin_pow(var*, gc&);
var builtin_sin(var*, gc&);
var builtin_cos(var*, gc&);
@ -16,3 +18,5 @@ var builtin_atan2(var*, gc&);
var builtin_isnan(var*, gc&);
extern nasal_builtin_table math_lib_native[];
}

22
src/nasal.h
View File

@ -11,6 +11,17 @@
#include <cmath>
#include <vector>
using i32 = std::int32_t;
using i64 = std::int64_t;
using u8 = std::uint8_t;
using u16 = std::uint16_t;
using u32 = std::uint32_t;
using u64 = std::uint64_t;
using usize = std::size_t;
using f64 = double;
namespace nasal {
bool is_windows();
bool is_linux();
bool is_macos();
@ -23,14 +34,7 @@ bool is_ia64();
bool is_powerpc();
bool is_superh();
using i32 = std::int32_t;
using i64 = std::int64_t;
using u8 = std::uint8_t;
using u16 = std::uint16_t;
using u32 = std::uint32_t;
using u64 = std::uint64_t;
using usize = std::size_t;
using f64 = double;
const u32 STACK_DEPTH = 4096;
@ -50,4 +54,6 @@ i32 utf8_hdchk(const char);
std::string chrhex(const char);
std::string rawstr(const std::string&, const usize maxlen=0);
}
#include "nasal_gc.h"

30
src/nasal_builtin.cpp
View File

@ -1,6 +1,8 @@
#include "nasal_builtin.h"
#include <chrono>
namespace nasal {
var builtin_print(var* local, gc& ngc) {
for(auto& i : local[1].vec().elems) {
std::cout << i;
@ -49,7 +51,7 @@ var builtin_setsize(var* local, gc& ngc) {
if (size.type!=vm_num || size.num()<0) {
return nil;
}
vec.vec().elems.resize((i64)size.num(), nil);
vec.vec().elems.resize(static_cast<i64>(size.num()), nil);
return nil;
}
@ -58,7 +60,7 @@ var builtin_system(var* local, gc& ngc) {
if (str.type!=vm_str) {
return var::num(-1);
}
return var::num((f64)system(str.str().c_str()));
return var::num(static_cast<f64>(system(str.str().c_str())));
}
var builtin_input(var* local, gc& ngc) {
@ -117,7 +119,7 @@ var builtin_rand(var* local, gc& ngc) {
return nas_err("rand", "\"seed\" must be nil or number");
}
if (val.type==vm_num) {
srand((u32)val.num());
srand(static_cast<u32>(val.num()));
return nil;
}
f64 num = 0;
@ -132,7 +134,8 @@ var builtin_id(var* local, gc& ngc) {
std::stringstream ss;
ss << "0";
if (val.type>vm_num) {
ss << "x" << std::hex << (u64)val.val.gcobj << std::dec;
ss << "x" << std::hex;
ss << reinterpret_cast<u64>(val.val.gcobj) << std::dec;
}
return ngc.newstr(ss.str());
}
@ -142,7 +145,7 @@ var builtin_int(var* local, gc& ngc) {
if (val.type!=vm_num && val.type!=vm_str) {
return nil;
}
return var::num(f64((i32)val.tonum()));
return var::num(static_cast<f64>(static_cast<i32>(val.tonum())));
}
var builtin_floor(var* local, gc& ngc) {
@ -202,7 +205,7 @@ var builtin_time(var* local, gc& ngc) {
return nas_err("time", "\"begin\" must be number");
}
time_t begin = (time_t)val.num();
return var::num((f64)time(&begin));
return var::num(static_cast<f64>(time(&begin)));
}
var builtin_contains(var* local, gc& ngc) {
@ -259,9 +262,9 @@ var builtin_find(var* local, gc& ngc) {
var haystack = local[2];
usize pos = haystack.tostr().find(needle.tostr());
if (pos==std::string::npos) {
return var::num((f64)-1);
return var::num(-1.0);
}
return var::num((f64)pos);
return var::num(static_cast<f64>(pos));
}
var builtin_type(var* local, gc& ngc) {
@ -331,7 +334,7 @@ var builtin_right(var* local, gc& ngc) {
if (len.type!=vm_num) {
return nas_err("right", "\"length\" must be number");
}
i32 length = (i32)len.num();
i32 length = static_cast<i32>(len.num());
i32 srclen = str.str().length();
if (length>srclen) {
length = srclen;
@ -348,7 +351,10 @@ var builtin_cmp(var* local, gc& ngc) {
if (a.type!=vm_str || b.type!=vm_str) {
return nas_err("cmp", "\"a\" and \"b\" must be string");
}
return var::num((f64)strcmp(a.str().c_str(), b.str().c_str()));
return var::num(static_cast<f64>(strcmp(
a.str().c_str(),
b.str().c_str()
)));
}
var builtin_chr(var* local, gc& ngc) {
@ -606,7 +612,7 @@ var builtin_ghosttype(var* local, gc& ngc) {
}
const auto& name = arg.obj().get_ghost_name();
if (!name.length()) {
return var::num((u64)arg.obj().ptr);
return var::num(reinterpret_cast<u64>(arg.obj().ptr));
}
return ngc.newstr(name);
}
@ -655,3 +661,5 @@ nasal_builtin_table builtin[] = {
{"__ghosttype", builtin_ghosttype},
{nullptr, nullptr}
};
}

4
src/nasal_builtin.h
View File

@ -22,6 +22,8 @@
#define environ (*_NSGetEnviron())
#endif
namespace nasal {
var builtin_print(var*, gc&);
var builtin_println(var*, gc&);
var builtin_exit(var*, gc&);
@ -75,3 +77,5 @@ struct nasal_builtin_table {
};
extern nasal_builtin_table builtin[];
}

3
src/nasal_dbg.cpp
View File

@ -237,7 +237,8 @@ void dbg::run(
const std::vector<std::string>& argv,
bool profile,
bool show_all_prof_result) {
verbose = true;
set_detail_report_info(true);
do_profiling = profile || show_all_prof_result;
const auto& file_list = linker.get_file_list();

18
src/nasal_err.cpp
View File

@ -75,10 +75,12 @@ std::ostream& reset(std::ostream& s) {
void flstream::load(const std::string& f) {
if (file==f) { // don't need to load a loaded file
return;
} else {
file = f;
}
// update file name
file = f;
// REPL: load from memory
if (repl::info::instance()->in_repl_mode &&
repl::info::instance()->repl_file_name==file) {
const auto& source = repl::info::instance()->repl_file_source;
@ -135,14 +137,15 @@ void error::err(
const std::string iden = identation(maxlen);
for(u32 line = loc.begin_line; line<=loc.end_line; ++line) {
// skip line 0
if (!line) {
continue;
}
if (loc.begin_line<line && line<loc.end_line) {
if (line==loc.begin_line+1) {
std::cerr << cyan << iden << " | " << reset << "...\n"
<< cyan << iden << " | " << reset << "\n";
std::cerr << cyan << iden << " | " << reset << "...\n";
std::cerr << cyan << iden << " | " << reset << "\n";
}
continue;
}
@ -152,7 +155,12 @@ void error::err(
continue;
}
const std::string& code=res[line-1];
// line out of range
if (line-1>=res.size()) {
continue;
}
const auto& code = res[line-1];
std::cerr << cyan << leftpad(line, maxlen) << " | " << reset << code << "\n";
// output underline
std::cerr << cyan << iden << " | " << reset;

19
src/nasal_gc.cpp
View File

@ -1,5 +1,7 @@
#include "nasal_gc.h"
namespace nasal {
var nas_vec::get_val(const i32 n) {
i32 size = elems.size();
if (n<-size || n>=size) {
@ -128,7 +130,8 @@ void nas_ghost::clear() {
std::ostream& operator<<(std::ostream& out, const nas_ghost& ghost) {
out << "<object " << ghost.get_ghost_name();
out << " at 0x" << std::hex << (u64)ghost.ptr << std::dec << ">";
out << " at 0x" << std::hex;
out << reinterpret_cast<u64>(ghost.ptr) << std::dec << ">";
return out;
}
@ -152,7 +155,8 @@ void nas_co::clear() {
}
std::ostream& operator<<(std::ostream& out, const nas_co& co) {
out << "<coroutine at 0x" << std::hex << u64(&co) << std::dec << ">";
out << "<coroutine at 0x" << std::hex;
out << reinterpret_cast<u64>(&co) << std::dec << ">";
return out;
}
@ -265,11 +269,11 @@ bool var::objchk(const std::string& name) {
}
var var::none() {
return {vm_none, (u32)0};
return {vm_none, static_cast<u32>(0)};
}
var var::nil() {
return {vm_nil, (u32)0};
return {vm_nil, static_cast<u32>(0)};
}
var var::ret(u32 pc) {
@ -533,11 +537,8 @@ void gc::extend(u8 type) {
void gc::init(
const std::vector<std::string>& s, const std::vector<std::string>& argv) {
// initialize function register
rctx->funcr = nil;
worktime = 0;
// initialize counters
worktime = 0;
for(u8 i = 0; i<gc_type_size; ++i) {
size[i] = gcnt[i] = acnt[i] = 0;
}
@ -717,3 +718,5 @@ var nas_err(const std::string& error_function_name, const std::string& info) {
std::cerr << "[vm] " << error_function_name << ": " << info << "\n";
return var::none();
}
}

8
src/nasal_gc.h
View File

@ -32,6 +32,8 @@
#include "nasal.h"
namespace nasal {
enum vm_type:u8 {
/* none-gc object */
vm_none = 0,
@ -298,8 +300,8 @@ struct gc {
var temp = nil;
/* constants and memory pool */
std::vector<var> strs; // reserved address for const vm_str
std::vector<var> env_argv; // command line arguments
std::vector<var> strs = {}; // reserved address for const vm_str
std::vector<var> env_argv = {}; // command line arguments
std::vector<nas_val*> memory; // gc memory
std::vector<nas_val*> unused[gc_type_size]; // gc free list
@ -388,3 +390,5 @@ struct module_func_info {
// module function "get" type
typedef module_func_info* (*get_func_ptr)();
}

1
src/nasal_lexer.cpp
View File

@ -330,6 +330,7 @@ const error& lexer::scan(const std::string& file) {
line = 1;
column = 0;
ptr = 0;
toks = {};
open(file);
while(ptr<res.size()) {

4
src/nasal_misc.cpp
View File

@ -1,5 +1,7 @@
#include "nasal.h"
namespace nasal {
bool is_windows() {
#if defined(_WIN32) || defined(_WIN64)
return true;
@ -228,3 +230,5 @@ std::string rawstr(const std::string& str, const usize maxlen) {
}
return ret;
}
}

9
src/nasal_opcode.cpp
View File

@ -1,5 +1,7 @@
#include "nasal_opcode.h"
namespace nasal {
const char* opname[] = {
"exit ", "intg ", "intl ", "loadg ",
"loadl ", "loadu ", "pnum ", "pnil ",
@ -45,7 +47,7 @@ void codestream::dump(std::ostream& out) const {
auto num = code.num;
out << hex << "0x"
<< setw(6) << setfill('0') << index << " "
<< setw(2) << setfill('0') << (u32)op << " "
<< setw(2) << setfill('0') << static_cast<u32>(op) << " "
<< setw(2) << setfill('0') << ((num>>16)&0xff) << " "
<< setw(2) << setfill('0') << ((num>>8)&0xff) << " "
<< setw(2) << setfill('0') << (num&0xff) << " "
@ -90,7 +92,8 @@ void codestream::dump(std::ostream& out) const {
out << hex << "0x" << num << dec; break;
case op_callb:
out << hex << "0x" << num << " <" << natives[num].name
<< "@0x" << (u64)natives[num].func << dec << ">"; break;
<< "@0x" << reinterpret_cast<u64>(natives[num].func)
<< dec << ">"; break;
case op_upval: case op_mupval:
case op_loadu:
out << hex << "0x" << ((num>>16)&0xffff)
@ -116,3 +119,5 @@ std::ostream& operator<<(std::ostream& out, const codestream& ins) {
ins.dump(out);
return out;
}
}

4
src/nasal_opcode.h
View File

@ -5,6 +5,8 @@
#include <iostream>
namespace nasal {
enum op_code_type:u8 {
op_exit, // stop the virtual machine
op_intg, // init global scope
@ -127,3 +129,5 @@ public:
std::ostream& operator<<(std::ostream&, const codestream&);
extern const char* opname[];
}

104
src/nasal_vm.cpp
View File

@ -20,19 +20,10 @@ void vm::init(
/* set native functions */
native = natives;
/* set canary and program counter */
ctx.pc = 0;
ctx.localr = nullptr;
ctx.memr = nullptr;
ctx.funcr = nil;
ctx.upvalr = nil;
ctx.canary = ctx.stack+STACK_DEPTH-1; // stack[STACK_DEPTH-1]
ctx.top = ctx.stack; // nothing is on stack
/* clear main stack and global */
for(u32 i = 0; i<STACK_DEPTH; ++i) {
ctx.stack[i] = nil;
global[i] = nil;
/* set context and global */
if (!is_repl_mode || first_exec_flag) {
context_and_global_init();
first_exec_flag = false;
}
/* init gc */
@ -52,41 +43,64 @@ void vm::init(
arg_instance.vec().elems = ngc.env_argv;
}
void vm::context_and_global_init() {
/* set canary and program counter */
ctx.pc = 0;
ctx.localr = nullptr;
ctx.memr = nullptr;
ctx.funcr = nil;
ctx.upvalr = nil;
/* set canary = stack[STACK_DEPTH-1] */
ctx.canary = ctx.stack+STACK_DEPTH-1;
/* nothing is on stack */
ctx.top = ctx.stack;
/* clear main stack and global */
for(u32 i = 0; i<STACK_DEPTH; ++i) {
ctx.stack[i] = nil;
global[i] = nil;
}
}
void vm::valinfo(var& val) {
const nas_val* p = val.val.gcobj;
const auto p = reinterpret_cast<u64>(val.val.gcobj);
switch(val.type) {
case vm_none: std::clog << "| null |"; break;
case vm_ret: std::clog << "| pc | 0x" << std::hex
<< val.ret() << std::dec; break;
case vm_addr: std::clog << "| addr | 0x" << std::hex
<< (u64)val.addr() << std::dec; break;
<< reinterpret_cast<u64>(val.addr())
<< std::dec; break;
case vm_cnt: std::clog << "| cnt | " << val.cnt(); break;
case vm_nil: std::clog << "| nil |"; break;
case vm_num: std::clog << "| num | " << val.num(); break;
case vm_str: std::clog << "| str | <0x" << std::hex << (u64)p
case vm_str: std::clog << "| str | <0x" << std::hex << p
<< "> " << rawstr(val.str(), 16)
<< std::dec; break;
case vm_func: std::clog << "| func | <0x" << std::hex << (u64)p
case vm_func: std::clog << "| func | <0x" << std::hex << p
<< "> entry:0x" << val.func().entry
<< std::dec; break;
case vm_upval:std::clog << "| upval| <0x" << std::hex << (u64)p
case vm_upval:std::clog << "| upval| <0x" << std::hex << p
<< std::dec << "> [" << val.upval().size
<< " val]"; break;
case vm_vec: std::clog << "| vec | <0x" << std::hex << (u64)p
case vm_vec: std::clog << "| vec | <0x" << std::hex << p
<< std::dec << "> [" << val.vec().size()
<< " val]"; break;
case vm_hash: std::clog << "| hash | <0x" << std::hex << (u64)p
case vm_hash: std::clog << "| hash | <0x" << std::hex << p
<< std::dec << "> {" << val.hash().size()
<< " val}"; break;
case vm_obj: std::clog << "| obj | <0x" << std::hex << (u64)p
<< "> obj:0x" << (u64)val.obj().ptr
case vm_obj: std::clog << "| obj | <0x" << std::hex << p
<< "> obj:0x"
<< reinterpret_cast<u64>(val.obj().ptr)
<< std::dec; break;
case vm_co: std::clog << "| co | <0x" << std::hex << (u64)p
case vm_co: std::clog << "| co | <0x" << std::hex << p
<< std::dec << "> coroutine"; break;
case vm_map: std::clog << "| nmspc| <0x" << std::hex << (u64)p
case vm_map: std::clog << "| nmspc| <0x" << std::hex << p
<< std::dec << "> namespace ["
<< val.map().mapper.size() << " val]"; break;
default: std::clog << "| err | <0x" << std::hex << (u64)p
default: std::clog << "| err | <0x" << std::hex << p
<< std::dec << "> unknown object"; break;
}
std::clog << "\n";
@ -128,13 +142,13 @@ void vm::traceback() {
void vm::stackinfo(const u32 limit = 10) {
var* top = ctx.top;
var* bottom = ctx.stack;
std::clog << "stack (0x" << std::hex << (u64)bottom << std::dec;
std::clog << ", limit " << limit << ", total ";
std::clog << (top<bottom? 0:(i64)(top-bottom+1)) << ")\n";
std::clog << "stack (0x" << std::hex << reinterpret_cast<u64>(bottom);
std::clog << std::dec << ", limit " << limit << ", total ";
std::clog << (top<bottom? 0:static_cast<i64>(top-bottom+1)) << ")\n";
for(u32 i = 0; i<limit && top>=bottom; ++i, --top) {
std::clog << " 0x" << std::hex
<< std::setw(6) << std::setfill('0')
<< (u64)(top-bottom) << std::dec
<< static_cast<u64>(top-bottom) << std::dec
<< " ";
valinfo(top[0]);
}
@ -144,11 +158,16 @@ void vm::reginfo() {
std::clog << "registers (" << (ngc.cort? "coroutine":"main")
<< ")\n" << std::hex
<< " [pc ] | pc | 0x" << ctx.pc << "\n"
<< " [global] | addr | 0x" << (u64)global << "\n"
<< " [local ] | addr | 0x" << (u64)ctx.localr << "\n"
<< " [memr ] | addr | 0x" << (u64)ctx.memr << "\n"
<< " [canary] | addr | 0x" << (u64)ctx.canary << "\n"
<< " [top ] | addr | 0x" << (u64)ctx.top << "\n"
<< " [global] | addr | 0x"
<< reinterpret_cast<u64>(global) << "\n"
<< " [local ] | addr | 0x"
<< reinterpret_cast<u64>(ctx.localr) << "\n"
<< " [memr ] | addr | 0x"
<< reinterpret_cast<u64>(ctx.memr) << "\n"
<< " [canary] | addr | 0x"
<< reinterpret_cast<u64>(ctx.canary) << "\n"
<< " [top ] | addr | 0x"
<< reinterpret_cast<u64>(ctx.top) << "\n"
<< std::dec;
std::clog << " [funcr ] "; valinfo(ctx.funcr);
std::clog << " [upval ] "; valinfo(ctx.upvalr);
@ -159,7 +178,7 @@ void vm::gstate() {
return;
}
std::clog << "global (0x" << std::hex
<< (u64)global << ")\n" << std::dec;
<< reinterpret_cast<u64>(global) << ")\n" << std::dec;
for(usize i = 0; i<global_size; ++i) {
std::clog << " 0x" << std::hex << std::setw(6)
<< std::setfill('0') << i << std::dec
@ -173,8 +192,8 @@ void vm::lstate() {
return;
}
const u32 lsize = ctx.funcr.func().lsize;
std::clog << "local (0x" << std::hex << (u64)ctx.localr
<< " <+" << (u64)(ctx.localr-ctx.stack)
std::clog << "local (0x" << std::hex << reinterpret_cast<u64>(ctx.localr)
<< " <+" << static_cast<u64>(ctx.localr-ctx.stack)
<< ">)\n" << std::dec;
for(u32 i = 0; i<lsize; ++i) {
std::clog << " 0x" << std::hex << std::setw(6)
@ -233,9 +252,8 @@ void vm::die(const std::string& str) {
void vm::run(
const codegen& gen,
const linker& linker,
const std::vector<std::string>& argv,
const bool detail) {
verbose = detail;
const std::vector<std::string>& argv
) {
init(gen.strs(), gen.nums(), gen.natives(),
gen.codes(), gen.globals(), linker.get_file_list(), argv);
#ifndef _MSC_VER
@ -334,11 +352,13 @@ void vm::run(
#endif
vmexit:
if (detail) {
if (verbose) {
ngc.info();
}
ngc.clear();
imm.clear();
if (!is_repl_mode) {
ngc.clear();
}
return;
#ifndef _MSC_VER

19
src/nasal_vm.h
View File

@ -38,6 +38,10 @@ protected:
const std::string* files = nullptr; // file name list
const opcode* bytecode = nullptr; // bytecode buffer address
/* variables for repl mode */
bool is_repl_mode = false;
bool first_exec_flag = true;
/* vm initializing function */
void init(
const std::vector<std::string>&,
@ -46,7 +50,9 @@ protected:
const std::vector<opcode>&,
const std::unordered_map<std::string, i32>&,
const std::vector<std::string>&,
const std::vector<std::string>&);
const std::vector<std::string>&
);
void context_and_global_init();
/* debug functions */
bool verbose = false;
@ -167,8 +173,13 @@ public:
void run(
const codegen&,
const linker&,
const std::vector<std::string>&,
const bool);
const std::vector<std::string>&
);
/* set detail report info flag */
void set_detail_report_info(bool flag) {verbose = flag;}
/* set repl mode flag */
void set_repl_mode_flag(bool flag) {is_repl_mode = flag;}
};
inline bool vm::cond(var& val) {
@ -285,7 +296,7 @@ inline void vm::o_lnot() {
case vm_str: {
const f64 num = str2num(val.str().c_str());
if (std::isnan(num)) {
ctx.top[0] = var::num((f64)val.str().empty());
ctx.top[0] = var::num(static_cast<f64>(val.str().empty()));
} else {
ctx.top[0] = num? zero:one;
}

26
src/repl.cpp
View File

@ -21,7 +21,7 @@ void repl::update_temp_file() {
for(const auto& i : source) {
content += i + "\n";
}
info::instance()->repl_file_source = content;
info::instance()->repl_file_source = content + " ";
}
bool repl::check_need_more_input() {
@ -49,6 +49,7 @@ bool repl::check_need_more_input() {
if (in_curve<=0 && in_bracket<=0 && in_brace<=0) {
break;
}
auto line = readline("... ");
source.back() += "\n" + line;
}
@ -60,23 +61,22 @@ void repl::help() {
std::cout << ".e, .exit | quit the REPL\n";
std::cout << ".q, .quit | quit the REPL\n";
std::cout << ".c, .clear | clear the screen\n";
std::cout << ".s, .source | show source code\n";
std::cout << "\n";
}
bool repl::run() {
update_temp_file();
using clk = std::chrono::high_resolution_clock;
const auto den = clk::duration::period::den;
auto start = clk::now();
auto nasal_lexer = std::unique_ptr<lexer>(new lexer);
auto nasal_parser = std::unique_ptr<parse>(new parse);
auto nasal_linker = std::unique_ptr<linker>(new linker);
auto nasal_opt = std::unique_ptr<optimizer>(new optimizer);
auto nasal_codegen = std::unique_ptr<codegen>(new codegen);
auto nasal_runtime = std::unique_ptr<vm>(new vm);
auto start = clk::now();
update_temp_file();
if (nasal_lexer->scan("<nasal-repl>").geterr()) {
return false;
}
@ -89,14 +89,18 @@ bool repl::run() {
return false;
}
nasal_opt->do_optimization(nasal_parser->tree());
// nasal_opt->do_optimization(nasal_parser->tree());
if (nasal_codegen->compile(*nasal_parser, *nasal_linker).geterr()) {
return false;
}
auto end = clk::now();
std::clog << "[compile time: " << (end-start).count()*1000.0/den << " ms]\n";
nasal_runtime->run(*nasal_codegen, *nasal_linker, {}, false);
// TODO: gc init stage in this run may cause memory leak,
// because constant strings will be generated again.
// but we could not delete old strings, they maybe still on stack.
runtime.run(*nasal_codegen, *nasal_linker, {});
return true;
}
@ -114,7 +118,9 @@ void repl::execute() {
continue;
}
if (line == ".e" || line == ".exit" || line == ".q" || line == ".quit") {
if (line == ".e" || line == ".exit") {
break;
} else if (line == ".q" || line == ".quit") {
break;
} else if (line == ".h" || line == ".help") {
help();
@ -122,6 +128,10 @@ void repl::execute() {
} else if (line == ".c" || line == ".clear") {
std::cout << "\033c";
continue;
} else if (line == ".s" || line == ".source") {
update_temp_file();
std::cout << info::instance()->repl_file_source << "\n";
continue;
} else if (line[0] == "."[0]) {
std::cout << "no such command \"" << line;
std::cout << "\", input \".help\" for help\n";

8
src/repl.h
View File

@ -1,6 +1,7 @@
#pragma once
#include "nasal.h"
#include "nasal_vm.h"
#include <iostream>
#include <fstream>
@ -26,6 +27,7 @@ struct info {
class repl {
private:
std::vector<std::string> source;
vm runtime;
private:
std::string readline(std::string);
@ -35,6 +37,12 @@ private:
bool run();
public:
repl() {
// set repl mode
runtime.set_repl_mode_flag(true);
// no detail report info
runtime.set_detail_report_info(false);
}
void execute();
};

28
src/unix_lib.cpp
View File

@ -1,10 +1,12 @@
#include "unix_lib.h"
namespace nasal {
const auto dir_type_name = "dir";
void dir_entry_destructor(void* ptr) {
#ifndef _MSC_VER
closedir((DIR*)ptr);
closedir(static_cast<DIR*>(ptr));
#else
FindClose(ptr);
#endif
@ -17,11 +19,11 @@ var builtin_pipe(var* local, gc& ngc) {
if (pipe(fd)==-1) {
return nas_err("pipe", "failed to create pipe");
}
res.vec().elems.push_back(var::num((f64)fd[0]));
res.vec().elems.push_back(var::num((f64)fd[1]));
res.vec().elems.push_back(var::num(static_cast<f64>(fd[0])));
res.vec().elems.push_back(var::num(static_cast<f64>(fd[1])));
return res;
#endif
return nas_err("pipe", "not supported");
return nas_err("pipe", "not supported on windows");
}
var builtin_fork(var* local, gc& ngc) {
@ -30,9 +32,9 @@ var builtin_fork(var* local, gc& ngc) {
if (res<0) {
return nas_err("fork", "failed to fork a process");
}
return var::num((f64)res);
return var::num(static_cast<f64>(res));
#endif
return nas_err("fork", "not supported");
return nas_err("fork", "not supported on windows");
}
var builtin_waitpid(var* local, gc& ngc) {
@ -45,11 +47,11 @@ var builtin_waitpid(var* local, gc& ngc) {
i32 ret_pid, status;
ret_pid = waitpid(pid.num(), &status, nohang.num()==0? 0:WNOHANG);
var vec = ngc.alloc(vm_vec);
vec.vec().elems.push_back(var::num((f64)ret_pid));
vec.vec().elems.push_back(var::num((f64)status));
vec.vec().elems.push_back(var::num(static_cast<f64>(ret_pid)));
vec.vec().elems.push_back(var::num(static_cast<f64>(status)));
return vec;
#endif
return nas_err("waitpid", "not supported");
return nas_err("waitpid", "not supported on windows");
}
var builtin_opendir(var* local, gc& ngc) {
@ -87,7 +89,7 @@ var builtin_readdir(var* local, gc& ngc) {
}
return ngc.newstr(data.cFileName);
#else
dirent* p = readdir((DIR*)handle.obj().ptr);
dirent* p = readdir(static_cast<DIR*>(handle.obj().ptr));
return p? ngc.newstr(p->d_name):nil;
#endif
}
@ -104,9 +106,9 @@ var builtin_closedir(var* local, gc& ngc) {
var builtin_chdir(var* local, gc& ngc) {
var path = local[1];
if (path.type!=vm_str) {
return var::num((f64)-1);
return var::num(-1.0);
}
return var::num((f64)chdir(path.str().c_str()));
return var::num(static_cast<f64>(chdir(path.str().c_str())));
}
var builtin_environ(var* local, gc& ngc) {
@ -149,3 +151,5 @@ nasal_builtin_table unix_lib_native[] = {
{"__getenv", builtin_getenv},
{nullptr, nullptr}
};
}

4
src/unix_lib.h
View File

@ -20,6 +20,8 @@
#include <sys/wait.h>
#endif
namespace nasal {
void dir_entry_destructor(void*);
var builtin_pipe(var*, gc&);
@ -34,3 +36,5 @@ var builtin_getcwd(var*, gc&);
var builtin_getenv(var*, gc&);
extern nasal_builtin_table unix_lib_native[];
}

76
tools/repl.nas
View File

@ -1,76 +0,0 @@
# experimental repl
# 2023/8/19 by ValKmjolnir
var help = func() {
println(" .help | show help");
println(" .exit | quit the REPL");
println(" .quit | quit the REPL");
println(" .clear | clear the screen");
println();
}
var content = [];
var log_cache = "";
println("Nasal: This is experimental REPL");
println("Tips : \";\" is automatically added at the end of the input line.");
help();
var count_bracket = func(line) {
var len = size(line);
var count = 0;
for(var i = 0; i < len; i += 1) {
if (line[i] == "{"[0]) {
count += 1;
} elsif (line[i] == "}"[0]) {
count -= 1;
}
}
return count;
}
while(1) {
var line = readline(">>> ");
if (!size(line)) {
continue;
}
if (line == ".exit" or line == ".quit") {
break;
} elsif (line == ".help") {
println();
help();
continue;
} elsif (line == ".clear") {
print("\ec");
continue;
} elsif (line[0] == "."[0]) {
println("no such command \"", line, "\", input \".help\" for help\n");
continue;
}
var in_bracket_level = count_bracket(line);
while(in_bracket_level > 0) {
var temp_line = readline("... ");
in_bracket_level += count_bracket(temp_line);
line ~= temp_line ~ "\n";
}
append(content, line);
var source = "";
foreach(var i; content) {
source ~= i ~ ";\n";
}
io.fout(".temp.nas", source);
var result = system("nasal .temp.nas > .temp.log");
if (result != 0) {
pop(content);
continue;
}
var log = io.readfile(".temp.log");
if (size(log) and size(log) != size(log_cache)) {
println(substr(log, size(log_cache), size(log)), "\n");
log_cache = log;
}
}