uCBQN/src/main.c
2021-09-25 22:25:41 +03:00

254 lines
7.9 KiB
C

#include "core.h"
#include "vm.h"
#include "utils/utf.h"
#include "utils/file.h"
B replPath; // also used by sysfn.c
static Scope* gsc;
static bool init = false;
static void repl_init() {
if (init) return;
cbqn_init();
replPath = m_str8l("."); gc_add(replPath);
Block* initBlock = bqn_comp(m_str8l("\"(REPL initializer)\""), inc(replPath), m_f64(0));
gsc = m_scope(initBlock->bodies[0], NULL, 0, 0, NULL); gc_add(tag(gsc,OBJ_TAG));
ptr_dec(initBlock);
init = true;
}
static B gsc_exec_inline(B src, B path, B args) {
Block* block = bqn_compSc(src, path, args, gsc, true);
ptr_dec(gsc->body); ptr_inc(block->bodies[0]); // redirect new errors to the newly executed code; initial scope had 0 vars, so this is safe
gsc->body = block->bodies[0];
B r = execBlockInline(block, gsc);
ptr_dec(block);
return r;
}
static bool isCmd(char* s, char** e, const char* cmd) {
while (*cmd) {
if (*s!=*cmd || *s==0) return false;
s++; cmd++;
}
*e = s;
return true;
}
int main(int argc, char* argv[]) {
bool startREPL = argc==1;
bool silentREPL = false;
bool execStdin = false;
if (!startREPL) {
i32 i = 1;
while (i!=argc) {
char* carg = argv[i];
if (carg[0]!='-') break;
if (carg[1]==0) { execStdin=true; i++; break; }
i++;
if (carg[1]=='-') {
if (!strcmp(carg, "--help")) {
printf(
"Usage: %s [options] [file.bqn [arguments]]\n"
"Options:\n"
"-f file: execute the contents of the file with all further arguments as •args\n"
"-e code: execute the argument as BQN\n"
"-p code: execute the argument as BQN and print its result pretty-printed\n"
"-o code: execute the argument as BQN and print its raw result\n"
"-M num : set maximum heap size to num megabytes\n"
"-r : start the REPL after executing all arguments\n"
"-s : start a silent REPL\n"
, argv[0]);
exit(0);
} else {
printf("%s: Unknown option: %s\n", argv[0], carg);
exit(1);
}
} else {
carg++;
char c;
while ((c = *carg++)) {
switch(c) { default: fprintf(stderr, "%s: Unknown option: -%c\n", argv[0], c); exit(1);
#define REQARG(X) if(*carg) { fprintf(stderr, "%s: -%s must end the option\n", argv[0], #X); exit(1); } if (i==argc) { fprintf(stderr, "%s: -%s requires an argument\n", argv[0], #X); exit(1); }
case 'f': repl_init(); REQARG(f); goto execFile;
case 'e': { repl_init(); REQARG(e);
dec(gsc_exec_inline(fromUTF8l(argv[i++]), m_str8l("(-e)"), emptySVec()));
break;
}
case 'p': { repl_init(); REQARG(p);
B r = bqn_fmt(gsc_exec_inline(fromUTF8l(argv[i++]), m_str8l("(-p)"), emptySVec()));
printRaw(r); dec(r);
printf("\n");
break;
}
case 'o': { repl_init(); REQARG(o);
B r = gsc_exec_inline(fromUTF8l(argv[i++]), m_str8l("(-o)"), emptySVec());
printRaw(r); dec(r);
printf("\n");
break;
}
case 'M': { REQARG(M);
char* str = argv[i++];
u64 am = 0;
while (*str) {
char c = *str++;
if (c<'0' | c>'9') { printf("%s: -M: Argument not a number\n", argv[0]); exit(1); }
if (am>1ULL<<48) { printf("%s: -M: Too large\n", argv[0]); exit(1); }
am = am*10 + c-48;
}
mm_heapMax = am*1024*1024;
break;
}
#ifdef PERF_TEST
case 'R': { repl_init(); REQARG(R);
B path = fromUTF8l(argv[i++]);
B lines = file_lines(path);
usz ia = a(lines)->ia;
SGet(lines)
for (u64 i = 0; i < ia; i++) {
dec(gsc_exec_inline(Get(lines, i), inc(replPath), emptySVec()));
}
break;
}
#endif
case 'r': { startREPL=true; break; }
case 's': { startREPL=true; silentREPL=true; break; }
}
}
}
}
execFile:
if (i!=argc || execStdin) {
repl_init();
B src;
if (!execStdin) src = fromUTF8l(argv[i++]);
B args;
if (i==argc) {
args = emptySVec();
} else {
HArr_p ap = m_harrUv(argc-i); // eh whatever, erroring will exit anyways
for (i64 j = 0; j < argc-i; j++) ap.a[j] = fromUTF8l(argv[i+j]);
args = ap.b;
}
B execRes;
if (execStdin) {
execRes = gsc_exec_inline(fromUTF8a(stream_bytes(stdin)), m_str8l("(-)"), args);
} else {
execRes = bqn_execFile(src, args);
}
dec(execRes);
#ifdef HEAP_VERIFY
heapVerify();
#endif
gc_forceGC();
}
}
if (startREPL) {
repl_init();
while (CATCH) {
printf("Error: "); printErrMsg(catchMessage); putchar('\n');
vm_pst(envCurr+1, envStart+envPrevHeight);
dec(catchMessage);
#ifdef HEAP_VERIFY
heapVerify();
#endif
gc_maybeGC();
}
while (true) { // exit by evaluating an empty expression
char* ln = NULL;
size_t gl = 0;
if (!silentREPL) printf(" ");
i64 read = getline(&ln, &gl, stdin);
if (read<=0 || ln[0]==0) { if(!silentREPL) putchar('\n'); break; }
if (ln[0]==10) { cont: free(ln); continue; }
if (ln[read-1]==10) ln[--read] = 0;
B code;
bool output;
i32 time = 0;
if (ln[0] == ')') {
char* cmdS = ln+1;
char* cmdE;
if (isCmd(cmdS, &cmdE, "ex ")) {
B path = fromUTF8l(cmdE);
code = file_chars(path);
output = false;
} else if (isCmd(cmdS, &cmdE, "t ") || isCmd(cmdS, &cmdE, "time ")) {
code = fromUTF8l(cmdE);
time = -1;
output = false;
} else if (isCmd(cmdS, &cmdE, "t:") || isCmd(cmdS, &cmdE, "time:")) {
char* repE = cmdE;
i64 am = 0;
while (*repE>='0' & *repE<='9') {
am = am*10 + (*repE - '0');
repE++;
}
if (repE==cmdE) { printf("time command not given repetition count\n"); goto cont; }
if (am==0) { printf("repetition count was zero\n"); goto cont; }
code = fromUTF8l(repE);
time = am;
output = false;
} else {
printf("Unknown REPL command\n");
goto cont;
}
} else {
code = fromUTF8l(ln);
output = true;
}
Block* block = bqn_compSc(code, inc(replPath), emptySVec(), gsc, true);
ptr_dec(gsc->body); ptr_inc(block->bodies[0]);
gsc->body = block->bodies[0];
B res;
if (time) {
f64 t;
if (time==-1) {
u64 sns = nsTime();
res = execBlockInline(block, gsc);
u64 ens = nsTime();
t = ens-sns;
} else {
u64 sns = nsTime();
for (i64 i = 0; i < time; i++) dec(execBlockInline(block, gsc));
u64 ens = nsTime();
t = (ens-sns)*1.0 / time;
res = m_c32(0);
}
if (t<1e3) printf("%.5gns\n", t);
else if (t<1e6) printf("%.4gus\n", t/1e3);
else if (t<1e9) printf("%.4gms\n", t/1e6);
else printf("%.5gs\n", t/1e9);
} else {
res = execBlockInline(block, gsc);
}
ptr_dec(block);
if (output) {
#if FORMATTER
B resFmt = bqn_fmt(res);
printRaw(resFmt); dec(resFmt);
putchar('\n');
#else
print(res); putchar('\n'); fflush(stdout);
dec(res);
#endif
} else dec(res);
#ifdef HEAP_VERIFY
heapVerify();
#endif
gc_maybeGC();
goto cont;
}
popCatch();
}
#ifdef HEAP_VERIFY
heapVerify();
#endif
bqn_exit(0);
#undef INIT
}