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repl.cpp
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repl.cpp
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#include <algorithm>
#include <fstream>
#include <iostream>
#include <cstring>
#include <lang/lexer.hpp>
#include <lang/operator.hpp>
#include <lang/parser.hpp>
#include <lib/std.hpp>
#include <lib/fs.hpp>
#include <optional>
#include <thread>
#include <tuple>
#include <util/llist.hpp>
#include <vector>
#include <vm/bc.hpp>
#include <vm/function.hpp>
#include <vm/state.hpp>
#include <vm/string.hpp>
#include <vm/table.hpp>
#include <vm/object.hpp>
namespace li::debug {
static void dump_table(table* t) {
for (auto& [k, v] : *t) {
if (k != nil) {
printf("%s->%s [hash=%zx]\n", k.to_string().c_str(), v.to_string().c_str(), k.hash());
}
}
}
};
using namespace li;
static void handle_repl_io(vm* L, std::string_view input) {
auto fn = li::load_script(L, input, "console", {}, true);
if (!fn.is_exc()) {
if (auto r = L->call(0, fn); r.is_exc()) {
printf(LI_RED "Exception: ");
L->last_ex.print();
printf("\n" LI_DEF);
} else if (r != nil) {
printf(LI_GRN "");
r.print();
printf("\n" LI_DEF);
if (r.is_tbl())
debug::dump_table(r.as_tbl());
}
} else {
printf(LI_RED "Parser error: " LI_DEF);
L->last_ex.print();
putchar('\n');
}
}
#if LI_ARCH_WASM
static vm* emscripten_vm = nullptr;
extern "C" {
void __attribute__((used)) runscript(const char* str) {
handle_repl_io(emscripten_vm, str);
}
};
#endif
#include <util/user.hpp>
int main(int argv, const char** args) {
platform::setup_ansi_escapes();
#if !LI_ARCH_WASM
// Create the VM.
//
auto* L = vm::create();
lib::register_std(L);
// Parse the arguments.
//
const char* file_path = nullptr;
for (int i = 1; i < argv; ++i) {
if (!strcmp(args[i], "--no-gc")) {
L->gc.suspend = true;
} else if (!strcmp(args[i], "--jit")) {
L->jit_all = true;
} else if (!strcmp(args[i], "--jit-verbose")) {
L->jit_all = true;
L->jit_verbose = true;
} else if (!file_path) {
file_path = args[i];
}
}
// Repl if no file given.
//
if (!file_path) {
// clang-format off
static constexpr const char hdr[] =
LI_YLW " @ " LI_CYN " \n"
LI_YLW " @@ " LI_CYN " \n"
LI_YLW " ,@@@ " LI_CYN " _ _ _____ _ _ \n"
LI_YLW " @@@@@ " LI_CYN " | | (_)/ ____| (_) | | \n"
LI_YLW " ,@@@@@@ " LI_CYN " | | _| (___ ___ _ __ _ _ __ | |_ \n"
LI_YLW " @@@@@@@@ " LI_CYN " | | | |\\___ \\ / __| '__| | '_ \\| __| \n"
LI_YLW " ,@@@@@@@@@@@@@@@@@@@@@@@ " LI_CYN " | |____| |____) | (__| | | | |_) | |_ \n"
LI_YLW " @@@@@@@@, " LI_CYN " |______|_|_____/ \\___|_| |_| .__/ \\__| \n"
LI_YLW " @@@@@@@ " LI_CYN " | | \n"
LI_YLW " @@@@@, " LI_CYN " |_| \n"
LI_YLW " @@@ " LI_CYN " \n"
LI_YLW " @, " LI_CYN " \n" LI_DEF;
// clang-format on
puts(hdr);
while (true) {
std::string buffer;
fputs(LI_BRG "> " LI_DEF, stdout);
std::getline(std::cin, buffer);
// While shift is being held, allow multiple lines to be inputted.
//
while (platform::is_shift_down()) {
std::string buffer2;
fputs(" ", stdout);
std::getline(std::cin, buffer2);
buffer += "\n";
buffer += buffer2;
}
// Exit on EOF (CTRL+D).
//
if (std::cin.eof()) {
return 0;
}
// Execute and print.
//
handle_repl_io(L, buffer);
}
}
// Read the file.
//
auto file = lib::fs::read_string(file_path);
if (!file) {
printf(LI_RED "Failed reading file '%s'\n" LI_DEF, file_path);
return 1;
}
auto fn = li::load_script(L, *file, file_path);
// Validate, print the result.
//
int retval = 1;
if (!fn.is_exc()) {
auto t0 = std::chrono::high_resolution_clock::now();
if (auto r = L->call(0, fn); r.is_exc()) {
auto t1 = std::chrono::high_resolution_clock::now();
printf(LI_BLU "(%.2lf ms) " LI_RED "Exception: " LI_DEF, (t1 - t0) / std::chrono::duration<double, std::milli>(1.0));
if (r = L->last_ex; r == nil)
printf("?");
else
r.print();
putchar('\n');
} else {
auto t1 = std::chrono::high_resolution_clock::now();
printf(LI_BLU "(%.2lf ms) " LI_GRN "Result: " LI_DEF, (t1 - t0) / std::chrono::duration<double, std::milli>(1.0));
if (r == nil)
printf("OK");
else
r.print();
putchar('\n');
if (r.is_tbl())
debug::dump_table(r.as_tbl());
retval = 0;
}
} else {
printf(LI_RED "Parser error: " LI_DEF);
L->last_ex.print();
putchar('\n');
}
L->close();
return retval;
#else
emscripten_vm = vm::create();
lib::register_std(emscripten_vm);
return 0;
#endif
}