1821 lines
72 KiB
C
1821 lines
72 KiB
C
/**
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* This file is part of the Fun programming language.
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* https://fun-lang.xyz/
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*
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* Copyright 2025 Johannes Findeisen <you@hanez.org>
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* Licensed under the terms of the Apache-2.0 license.
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* https://opensource.org/license/apache-2-0
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*
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* Added: 2025-10-05
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*/
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/**
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* REPL implementation for the Fun programming language.
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* Built only when FUN_WITH_REPL is defined.
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*/
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#include "bytecode.h"
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#include "value.h"
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#include "vm.h"
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#include "parser.h"
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#include "repl.h"
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <time.h>
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#include <ctype.h>
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#ifndef _WIN32
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#include <termios.h>
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#include <unistd.h>
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#include <dirent.h>
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#include <sys/stat.h>
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#include <limits.h>
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#endif
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#ifdef FUN_WITH_REPL
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#ifndef FUN_VERSION
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#define FUN_VERSION "0.0.0-dev"
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#endif
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/* --------- REPL history (in-memory + file integration) ---------- */
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enum { RL_HIST_MAX = 1000 };
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static char *rl_hist[RL_HIST_MAX];
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static int rl_count = 0;
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/* last history entry (or NULL) */
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static const char* rl_hist_last(void) {
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if (rl_count <= 0) return NULL;
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return rl_hist[rl_count - 1];
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}
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/* add one line to in-memory history (without trailing newline), dedup consecutive */
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static void rl_hist_add(const char *s) {
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if (!s) return;
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size_t n = strlen(s);
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/* strip single trailing newline if present */
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while (n > 0 && (s[n-1] == '\n' || s[n-1] == '\r')) n--;
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if (n == 0) return;
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/* dedupe consecutive identical */
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const char *last = rl_hist_last();
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if (last && strncmp(last, s, n) == 0 && last[n] == '\0') return;
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/* allocate and copy */
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char *cpy = (char*)malloc(n + 1);
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if (!cpy) return;
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memcpy(cpy, s, n);
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cpy[n] = '\0';
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if (rl_count == RL_HIST_MAX) {
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free(rl_hist[0]);
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memmove(&rl_hist[0], &rl_hist[1], sizeof(rl_hist[0]) * (RL_HIST_MAX - 1));
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rl_count--;
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}
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rl_hist[rl_count++] = cpy;
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}
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/* preload history from file (one line per entry) */
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static void rl_hist_load_file(const char *path) {
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if (!path) return;
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FILE *f = fopen(path, "r");
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if (!f) return;
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char line[4096];
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while (fgets(line, sizeof(line), f)) {
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rl_hist_add(line);
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}
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fclose(f);
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}
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#ifndef _WIN32
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static struct termios g_orig_tios;
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static int g_raw_enabled = 0;
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static void repl_disable_raw(void) {
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if (g_raw_enabled) {
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tcsetattr(STDIN_FILENO, TCSAFLUSH, &g_orig_tios);
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g_raw_enabled = 0;
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}
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}
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static int repl_enable_raw(void) {
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if (!isatty(STDIN_FILENO)) return 0;
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if (g_raw_enabled) return 1;
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if (tcgetattr(STDIN_FILENO, &g_orig_tios) == -1) return 0;
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struct termios raw = g_orig_tios;
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raw.c_lflag &= ~(ICANON | ECHO);
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raw.c_cc[VMIN] = 1;
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raw.c_cc[VTIME] = 0;
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if (tcsetattr(STDIN_FILENO, TCSAFLUSH, &raw) == -1) return 0;
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g_raw_enabled = 1;
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return 1;
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}
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/* return 1 if path is a directory, else 0 */
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static int is_dir_path(const char *path) {
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struct stat st;
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if (stat(path, &st) != 0) return 0;
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return S_ISDIR(st.st_mode);
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}
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/* Compute longest common prefix of a set of strings (starting from offset base_len) */
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static size_t lcp_suffix(const char **names, int count, size_t base_len) {
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if (count <= 0) return base_len;
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size_t lcp = (size_t)-1;
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for (int i = 0; i < count; ++i) {
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size_t nlen = strlen(names[i]);
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size_t cur = 0;
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/* compare suffix part starting at base_len */
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while (base_len + cur < nlen) {
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char c = names[i][base_len + cur];
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int ok = 1;
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for (int j = 0; j < count; ++j) {
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size_t jlen = strlen(names[j]);
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if (base_len + cur >= jlen || names[j][base_len + cur] != c) { ok = 0; break; }
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}
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if (!ok) break;
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cur++;
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}
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if (lcp == (size_t)-1 || cur < lcp) lcp = cur;
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}
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return base_len + (lcp == (size_t)-1 ? 0 : lcp);
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}
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/* Word-jump helpers (used by Ctrl+Left/Right in the REPL editor).
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* Words are runs of non-space characters; separators are spaces.
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*/
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static void rl_word_left(const char *out, size_t len, size_t *pos) {
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(void)len;
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if (!out || !pos) return;
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if (*pos == 0) return;
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while (*pos > 0 && out[*pos - 1] == ' ') (*pos)--;
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while (*pos > 0 && out[*pos - 1] != ' ') (*pos)--;
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}
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static void rl_word_right(const char *out, size_t len, size_t *pos) {
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if (!out || !pos) return;
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if (*pos >= len) return;
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while (*pos < len && out[*pos] != ' ') (*pos)++;
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while (*pos < len && out[*pos] == ' ') (*pos)++;
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}
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/* Expand file path for path-taking REPL commands (e.g., :load, :run) in-place; returns 1 if buffer changed (redraw) */
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static int complete_load_path(char *buf, size_t *len_io) {
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size_t len = *len_io;
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if (len < 3) return 0; /* minimally ":x" */
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const char *p = buf;
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while (*p == ' ') p++;
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if (*p != ':') return 0;
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p++;
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/* Parse command token (letters only) */
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const char *cmd_start = p;
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while (*p && ((*p >= 'a' && *p <= 'z') || (*p >= 'A' && *p <= 'Z'))) p++;
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size_t cmd_len = (size_t)(p - cmd_start);
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if (cmd_len == 0) return 0;
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/* Accept both full and short aliases for :load and :run */
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int is_supported = 0;
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if ((cmd_len == 4 && strncmp(cmd_start, "load", 4) == 0) ||
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(cmd_len == 2 && strncmp(cmd_start, "lo", 2) == 0) ||
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(cmd_len == 3 && strncmp(cmd_start, "run", 3) == 0) ||
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(cmd_len == 2 && strncmp(cmd_start, "ru", 2) == 0)) {
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is_supported = 1;
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}
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if (!is_supported) return 0;
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while (*p == ' ' || *p == '\t') p++;
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size_t arg_off = (size_t)(p - buf);
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if (arg_off > len) return 0;
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char prefix[PATH_MAX];
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size_t plen = 0;
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if (len - arg_off >= sizeof(prefix)) plen = sizeof(prefix) - 1;
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else plen = len - arg_off;
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memcpy(prefix, buf + arg_off, plen);
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prefix[plen] = '\0';
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char expanded[PATH_MAX];
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if (prefix[0] == '~') {
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const char *home = getenv("HOME");
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if (!home) home = getenv("USERPROFILE");
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if (home) snprintf(expanded, sizeof(expanded), "%s%s", home, prefix + 1);
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else snprintf(expanded, sizeof(expanded), "%s", prefix);
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} else {
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snprintf(expanded, sizeof(expanded), "%s", prefix);
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}
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char dirpart[PATH_MAX], base[PATH_MAX];
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const char *slash = strrchr(expanded, '/');
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if (slash) {
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size_t dlen = (size_t)(slash - expanded);
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if (dlen == 0) { strcpy(dirpart, "/"); }
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else { memcpy(dirpart, expanded, dlen); dirpart[dlen] = '\0'; }
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snprintf(base, sizeof(base), "%s", slash + 1);
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} else {
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strcpy(dirpart, ".");
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snprintf(base, sizeof(base), "%s", expanded);
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}
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DIR *dp = opendir(dirpart);
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if (!dp) { fputc('\a', stdout); fflush(stdout); return 0; }
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const char *names[1024];
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char storage[1024][NAME_MAX + 1];
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int count = 0;
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struct dirent *de;
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size_t blen = strlen(base);
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while ((de = readdir(dp)) != NULL) {
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if (blen == 0 || strncmp(de->d_name, base, blen) == 0) {
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if (count < (int)(sizeof(names)/sizeof(names[0]))) {
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snprintf(storage[count], sizeof(storage[count]), "%s", de->d_name);
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names[count] = storage[count];
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count++;
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}
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}
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}
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closedir(dp);
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if (count == 0) { fputc('\a', stdout); fflush(stdout); return 0; }
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size_t new_pref_len = lcp_suffix(names, count, blen);
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int changed = 0;
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char completed[PATH_MAX];
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if (slash) {
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char head[PATH_MAX];
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memcpy(head, expanded, (size_t)(slash - expanded + 1));
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head[slash - expanded + 1] = '\0';
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strncpy(completed, head, sizeof(completed));
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} else {
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snprintf(completed, sizeof(completed), "%s", "");
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}
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strncat(completed, base, sizeof(completed) - strlen(completed) - 1);
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if (new_pref_len > blen) {
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strncat(completed, names[0] + blen, (new_pref_len - blen));
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changed = 1;
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} else if (count == 1) {
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size_t extra = strlen(names[0]) - blen;
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strncat(completed, names[0] + blen, extra);
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changed = 1;
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}
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if (count == 1) {
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char test[PATH_MAX];
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if (slash) snprintf(test, sizeof(test), "%.*s/%s", (int)(slash - expanded), expanded, names[0]);
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else snprintf(test, sizeof(test), "%s", names[0]);
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if (is_dir_path(test)) {
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strncat(completed, "/", sizeof(completed) - strlen(completed) - 1);
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}
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}
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if (!changed && count > 1) {
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putchar('\n');
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for (int i = 0; i < count; ++i) {
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fputs(names[i], stdout);
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fputc(((i + 1) % 6 == 0) ? '\n' : '\t', stdout);
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}
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if (count % 6 != 0) putchar('\n');
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fflush(stdout);
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return 0;
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}
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size_t comp_len = strlen(completed);
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if (arg_off + comp_len >= PATH_MAX - 1) comp_len = PATH_MAX - 2 - arg_off;
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memcpy(buf + arg_off, completed, comp_len);
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*len_io = arg_off + comp_len;
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buf[*len_io] = '\0';
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return 1;
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}
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/* ---------- Stdlib symbol completion ---------- */
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static char **g_std_syms = NULL;
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static int g_std_syms_count = 0;
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static int g_std_syms_cap = 0;
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static int is_ident_start(int c) { return (c == '_' || (c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z')); }
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static int is_ident_char(int c) { return is_ident_start(c) || (c >= '0' && c <= '9'); }
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static void std_syms_add(const char *name) {
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if (!name || !*name) return;
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/* dedupe */
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for (int i = 0; i < g_std_syms_count; ++i) {
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if (strcmp(g_std_syms[i], name) == 0) return;
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}
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if (g_std_syms_count == g_std_syms_cap) {
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int ncap = g_std_syms_cap == 0 ? 256 : g_std_syms_cap * 2;
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char **nn = (char**)realloc(g_std_syms, (size_t)ncap * sizeof(char*));
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if (!nn) return;
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g_std_syms = nn;
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g_std_syms_cap = ncap;
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}
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size_t n = strlen(name);
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char *cpy = (char*)malloc(n + 1);
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if (!cpy) return;
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memcpy(cpy, name, n + 1);
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g_std_syms[g_std_syms_count++] = cpy;
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}
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static void scan_symbols_from_file(const char *path) {
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FILE *f = fopen(path, "r");
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if (!f) return;
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char line[4096];
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while (fgets(line, sizeof(line), f)) {
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const char *p = line;
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while (*p == ' ' || *p == '\t') p++;
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/* Patterns: fun NAME( ; class NAME ; const NAME ; var NAME */
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const char *kw = NULL;
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if (strncmp(p, "fun ", 4) == 0) { kw = "fun"; p += 4; }
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else if (strncmp(p, "class ", 6) == 0) { kw = "class"; p += 6; }
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else if (strncmp(p, "const ", 6) == 0) { kw = "const"; p += 6; }
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else if (strncmp(p, "var ", 4) == 0) { kw = "var"; p += 4; }
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if (!kw) continue;
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while (*p == ' ' || *p == '\t') p++;
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if (!is_ident_start((unsigned char)*p)) continue;
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char name[256];
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size_t ni = 0;
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while (is_ident_char((unsigned char)*p) && ni + 1 < sizeof(name)) {
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name[ni++] = *p++;
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}
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name[ni] = '\0';
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if (ni > 0) std_syms_add(name);
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}
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fclose(f);
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}
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static void scan_dir_recursive(const char *dir) {
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DIR *dp = opendir(dir);
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if (!dp) return;
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struct dirent *de;
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char path[PATH_MAX];
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while ((de = readdir(dp)) != NULL) {
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const char *n = de->d_name;
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if (strcmp(n, ".") == 0 || strcmp(n, "..") == 0) continue;
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snprintf(path, sizeof(path), "%s/%s", dir, n);
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struct stat st;
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if (stat(path, &st) != 0) continue;
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if (S_ISDIR(st.st_mode)) {
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scan_dir_recursive(path);
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} else {
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size_t L = strlen(n);
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if (L >= 4 && strcmp(n + (L - 4), ".fun") == 0) {
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scan_symbols_from_file(path);
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}
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}
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}
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closedir(dp);
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}
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static void load_stdlib_symbols(const char *libdir) {
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if (!libdir || !*libdir) return;
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scan_dir_recursive(libdir);
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}
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static void free_stdlib_symbols(void) {
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for (int i = 0; i < g_std_syms_count; ++i) free(g_std_syms[i]);
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free(g_std_syms);
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g_std_syms = NULL;
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g_std_syms_count = g_std_syms_cap = 0;
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}
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/* Complete the trailing identifier in 'buf' using stdlib symbols.
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Returns 1 if buffer changed, 2 if a menu was printed, 0 otherwise. */
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static int complete_stdlib_ident(char *buf, size_t *len_io, size_t *pos_io, size_t cap) {
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size_t len = *len_io;
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size_t pos = *pos_io;
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if (pos != len) return 0; /* complete only at end */
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if (len == 0) return 0;
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/* find start of identifier */
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size_t start = len;
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while (start > 0 && is_ident_char((unsigned char)buf[start - 1])) start--;
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if (start == len) return 0;
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const char *prefix = buf + start;
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size_t plen = len - start;
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/* collect matches */
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const char *matches[1024];
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int mcount = 0;
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for (int i = 0; i < g_std_syms_count && mcount < (int)(sizeof(matches)/sizeof(matches[0])); ++i) {
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if (strncmp(g_std_syms[i], prefix, plen) == 0) {
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matches[mcount++] = g_std_syms[i];
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}
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}
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if (mcount == 0) { fputc('\a', stdout); fflush(stdout); return 0; }
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/* compute longest common extension */
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size_t lcp = (size_t)-1;
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for (int i = 0; i < mcount; ++i) {
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size_t nlen = strlen(matches[i]);
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size_t cur = 0;
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while (plen + cur < nlen) {
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char c = matches[i][plen + cur];
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int ok = 1;
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for (int j = 0; j < mcount; ++j) {
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size_t jlen = strlen(matches[j]);
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if (plen + cur >= jlen || matches[j][plen + cur] != c) { ok = 0; break; }
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}
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if (!ok) break;
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cur++;
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}
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if (lcp == (size_t)-1 || cur < lcp) lcp = cur;
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}
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size_t new_pref_len = plen + (lcp == (size_t)-1 ? 0 : lcp);
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/* build completion text */
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char comp[512];
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size_t write_len = 0;
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if (mcount == 1) {
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snprintf(comp, sizeof(comp), "%s", matches[0]);
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write_len = strlen(comp);
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} else if (new_pref_len > plen) {
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strncpy(comp, prefix, plen);
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comp[plen] = '\0';
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strncat(comp, matches[0] + plen, new_pref_len - plen);
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write_len = strlen(comp);
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} else {
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/* list candidates */
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putchar('\n');
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for (int i = 0; i < mcount; ++i) {
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fputs(matches[i], stdout);
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fputc(((i + 1) % 6 == 0) ? '\n' : '\t', stdout);
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}
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if (mcount % 6 != 0) putchar('\n');
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fflush(stdout);
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return 2;
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}
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/* replace tail from 'start' with comp */
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if (start + write_len >= cap) write_len = cap - 1 - start;
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memmove(buf + start, comp, write_len);
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*len_io = start + write_len;
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buf[*len_io] = '\0';
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*pos_io = *len_io;
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return 1;
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}
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|
/* Read one line with prompt, handling backspace, Up/Down history and :load path completion (now with multi-line editing via Ctrl+O) */
|
|
static int read_line_edit(char *out, size_t out_cap, const char *prompt) {
|
|
#ifdef _WIN32
|
|
if (prompt) fputs(prompt, stdout), fflush(stdout);
|
|
if (!fgets(out, (int)out_cap, stdin)) return 0;
|
|
return 1;
|
|
#else
|
|
if (prompt) fputs(prompt, stdout), fflush(stdout);
|
|
if (!repl_enable_raw()) {
|
|
if (!fgets(out, (int)out_cap, stdin)) return 0;
|
|
return 1;
|
|
}
|
|
|
|
size_t len = 0;
|
|
size_t pos = 0;
|
|
int hist_pos = rl_count;
|
|
char saved_current[4096];
|
|
int has_saved = 0;
|
|
|
|
/* How many terminal rows were drawn in the previous repaint (prompt + lines in 'out').
|
|
We assume no automatic wrapping (only explicit '\n'). */
|
|
static int prev_rows = 1;
|
|
|
|
#define RL_REDRAW() do { \
|
|
/* Count explicit newlines to estimate rows to draw (prompt line + content lines) */ \
|
|
int rows = 1; \
|
|
int has_nl = 0; \
|
|
for (size_t __i = 0; __i < len; ++__i) { \
|
|
if (out[__i] == '\n') { rows++; has_nl = 1; } \
|
|
} \
|
|
/* Move cursor to the start (top) of the previous render block */ \
|
|
if (prev_rows > 1) { fprintf(stdout, "\x1b[%dA", prev_rows - 1); } \
|
|
fputc('\r', stdout); \
|
|
/* Repaint prompt + content */ \
|
|
if (prompt) fputs(prompt, stdout); \
|
|
fwrite(out, 1, len, stdout); \
|
|
/* Clear everything below the current cursor (removes remnants of older, longer renders) */ \
|
|
fputs("\x1b[J", stdout); \
|
|
/* Cursor policy: keep at end for multi-line; for single-line respect pos */ \
|
|
if (!has_nl && pos < len) { \
|
|
size_t back = (size_t)(len - pos); \
|
|
if (back > 0) fprintf(stdout, "\x1b[%zuD", back); \
|
|
} else { \
|
|
pos = len; \
|
|
} \
|
|
prev_rows = rows; \
|
|
fflush(stdout); \
|
|
} while(0)
|
|
|
|
for (;;) {
|
|
int ch = getchar();
|
|
if (ch == EOF) { repl_disable_raw(); return 0; }
|
|
|
|
if (ch == '\r' || ch == '\n') {
|
|
fputc('\n', stdout);
|
|
if (len + 1 < out_cap) {
|
|
out[len++] = '\n';
|
|
out[len] = '\0';
|
|
} else {
|
|
out[len] = '\0';
|
|
}
|
|
rl_hist_add(out);
|
|
repl_disable_raw();
|
|
return 1;
|
|
} else if (ch == 27) {
|
|
int c1 = getchar();
|
|
if (c1 == '[') {
|
|
char params[16];
|
|
int pi = 0;
|
|
int final = 0;
|
|
for (;;) {
|
|
int cx = getchar();
|
|
if (cx == EOF) break;
|
|
if ((cx >= 'A' && cx <= 'Z') || (cx >= 'a' && cx <= 'z') || cx == '~') {
|
|
final = cx;
|
|
break;
|
|
}
|
|
if (pi + 1 < (int)sizeof(params)) {
|
|
params[pi++] = (char)cx;
|
|
params[pi] = '\0';
|
|
}
|
|
}
|
|
int ctrl = 0;
|
|
if (pi > 0) {
|
|
if (strstr(params, ";5") != NULL || strcmp(params, "5") == 0 || strstr(params, "1;5") != NULL) {
|
|
ctrl = 1;
|
|
}
|
|
}
|
|
|
|
/* disallow fine-grained horizontal movement in multi-line mode (cursor stays at end) */
|
|
int has_nl = 0; for (size_t __i = 0; __i < len; ++__i) { if (out[__i] == '\n') { has_nl = 1; break; } }
|
|
|
|
if (final == 'A') {
|
|
if (!has_saved) {
|
|
size_t sl = len < sizeof(saved_current) - 1 ? len : sizeof(saved_current) - 1;
|
|
memcpy(saved_current, out, sl);
|
|
saved_current[sl] = '\0';
|
|
has_saved = 1;
|
|
}
|
|
if (hist_pos > 0) {
|
|
hist_pos--;
|
|
const char *h = rl_hist[hist_pos];
|
|
size_t hl = strlen(h);
|
|
if (hl >= out_cap) hl = out_cap - 1;
|
|
memcpy(out, h, hl);
|
|
out[hl] = '\0';
|
|
len = hl;
|
|
pos = len;
|
|
RL_REDRAW();
|
|
} else {
|
|
fputc('\a', stdout); fflush(stdout);
|
|
}
|
|
} else if (final == 'B') {
|
|
if (hist_pos < rl_count) {
|
|
hist_pos++;
|
|
if (hist_pos == rl_count) {
|
|
if (has_saved) {
|
|
size_t hl = strlen(saved_current);
|
|
if (hl >= out_cap) hl = out_cap - 1;
|
|
memcpy(out, saved_current, hl);
|
|
out[hl] = '\0';
|
|
len = hl;
|
|
} else {
|
|
len = 0; out[0] = '\0';
|
|
}
|
|
} else {
|
|
const char *h = rl_hist[hist_pos];
|
|
size_t hl = strlen(h);
|
|
if (hl >= out_cap) hl = out_cap - 1;
|
|
memcpy(out, h, hl);
|
|
out[hl] = '\0';
|
|
len = hl;
|
|
}
|
|
pos = len;
|
|
RL_REDRAW();
|
|
} else {
|
|
fputc('\a', stdout); fflush(stdout);
|
|
}
|
|
} else if (final == 'C') {
|
|
if (has_nl) { fputc('\a', stdout); fflush(stdout); pos = len; RL_REDRAW(); }
|
|
else if (ctrl) {
|
|
size_t old = pos;
|
|
rl_word_right(out, len, &pos);
|
|
if (pos != old) RL_REDRAW();
|
|
else { fputc('\a', stdout); fflush(stdout); }
|
|
} else {
|
|
if (pos < len) { pos++; fputs("\x1b[C", stdout); fflush(stdout); }
|
|
else { fputc('\a', stdout); fflush(stdout); }
|
|
}
|
|
} else if (final == 'D') {
|
|
if (has_nl) { fputc('\a', stdout); fflush(stdout); pos = len; RL_REDRAW(); }
|
|
else if (ctrl) {
|
|
size_t old = pos;
|
|
rl_word_left(out, len, &pos);
|
|
if (pos != old) RL_REDRAW();
|
|
else { fputc('\a', stdout); fflush(stdout); }
|
|
} else {
|
|
if (pos > 0) { pos--; fputs("\x1b[D", stdout); fflush(stdout); }
|
|
else { fputc('\a', stdout); fflush(stdout); }
|
|
}
|
|
} else {
|
|
/* ignore other CSI sequences */
|
|
}
|
|
}
|
|
} else if (ch == 127 || ch == 8) {
|
|
if (pos > 0) {
|
|
memmove(out + pos - 1, out + pos, len - pos);
|
|
len--;
|
|
pos--;
|
|
out[len] = '\0';
|
|
RL_REDRAW();
|
|
} else {
|
|
fputc('\a', stdout);
|
|
fflush(stdout);
|
|
}
|
|
} else if (ch == '\t') {
|
|
if (pos != len) {
|
|
fputc('\a', stdout);
|
|
fflush(stdout);
|
|
} else {
|
|
out[len] = '\0';
|
|
size_t newlen = len;
|
|
int changed = complete_load_path(out, &newlen);
|
|
if (changed) {
|
|
len = newlen;
|
|
pos = len;
|
|
} else {
|
|
/* try stdlib symbol completion */
|
|
int res = complete_stdlib_ident(out, &newlen, &pos, out_cap);
|
|
if (res == 1) {
|
|
len = newlen;
|
|
} else if (res == 2) {
|
|
/* menu printed — do not modify buffer, just redraw prompt+line */
|
|
} else {
|
|
fputc('\a', stdout);
|
|
fflush(stdout);
|
|
}
|
|
}
|
|
RL_REDRAW();
|
|
}
|
|
} else if (ch == 15) { /* Ctrl+O -> insert newline at cursor (multi-line editing) */
|
|
if (len + 1 < out_cap) {
|
|
memmove(out + pos + 1, out + pos, len - pos);
|
|
out[pos] = '\n';
|
|
len++;
|
|
pos++;
|
|
out[len] = '\0';
|
|
hist_pos = rl_count;
|
|
RL_REDRAW();
|
|
} else {
|
|
fputc('\a', stdout); fflush(stdout);
|
|
}
|
|
} else if (ch >= 32 && ch <= 126) {
|
|
if (len + 1 < out_cap) {
|
|
memmove(out + pos + 1, out + pos, len - pos);
|
|
out[pos] = (char)ch;
|
|
len++;
|
|
pos++;
|
|
out[len] = '\0';
|
|
hist_pos = rl_count;
|
|
RL_REDRAW();
|
|
} else {
|
|
fputc('\a', stdout);
|
|
fflush(stdout);
|
|
}
|
|
} else {
|
|
/* ignore other control characters */
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
#endif /* !_WIN32 */
|
|
|
|
/* ---------- Small utilities ---------- */
|
|
|
|
static int is_blank_line(const char *s) {
|
|
for (const char *p = s; *p; ++p) {
|
|
if (*p != ' ' && *p != '\t' && *p != '\r' && *p != '\n') return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static const char* lstrip(const char *s) {
|
|
while (*s == ' ' || *s == '\t') s++;
|
|
return s;
|
|
}
|
|
|
|
static int ends_with_opener(const char *line) {
|
|
size_t n = strlen(line);
|
|
while (n > 0 && (line[n-1] == ' ' || line[n-1] == '\t' || line[n-1] == '\r' || line[n-1] == '\n')) n--;
|
|
if (n == 0) return 0;
|
|
char c = line[n-1];
|
|
if (c == '+' || c == '-' || c == '*' || c == '/' || c == '%' ||
|
|
c == '<' || c == '>' || c == '=' || c == '!' || c == '&' || c == '|' || c == ',') {
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* Compute how many indentation levels (2 spaces per level) are still open. */
|
|
static int compute_open_indent_blocks(const char *buf) {
|
|
int in_block_comment = 0;
|
|
int open = 0;
|
|
int have_baseline = 0;
|
|
int cur = 0;
|
|
|
|
const char *p = buf;
|
|
while (*p) {
|
|
const char *line = p;
|
|
while (*p && *p != '\n') p++;
|
|
const char *line_end = p;
|
|
if (*p == '\n') p++;
|
|
|
|
if (in_block_comment) {
|
|
const char *q = line;
|
|
while (q < line_end) {
|
|
if (q + 1 < line_end && q[0] == '*' && q[1] == '/') { in_block_comment = 0; q += 2; break; }
|
|
q++;
|
|
}
|
|
if (in_block_comment) continue;
|
|
}
|
|
|
|
const char *s = line;
|
|
int spaces = 0;
|
|
while (s < line_end && *s == ' ') { spaces++; s++; }
|
|
while (s < line_end && *s == '\t') { s++; }
|
|
|
|
const char *t = s;
|
|
if (t >= line_end) continue;
|
|
|
|
if ((t + 1) <= line_end && t[0] == '/' && (t + 1 < line_end && (t[1] == '/' || t[1] == '*'))) {
|
|
if (t[1] == '/') {
|
|
continue;
|
|
} else if (t[1] == '*') {
|
|
in_block_comment = 1;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
int lvl = spaces / 2;
|
|
if (!have_baseline) {
|
|
cur = lvl;
|
|
have_baseline = 1;
|
|
continue;
|
|
}
|
|
if (lvl > cur) {
|
|
open += (lvl - cur);
|
|
} else if (lvl < cur) {
|
|
int dec = (cur - lvl);
|
|
if (dec > open) open = 0;
|
|
else open -= dec;
|
|
}
|
|
cur = lvl;
|
|
}
|
|
return open;
|
|
}
|
|
|
|
/* Detect if current buffer looks incomplete. */
|
|
static int buffer_looks_incomplete(const char *buf) {
|
|
int in_single = 0, in_double = 0, escape = 0;
|
|
int in_block_comment = 0, in_line_comment = 0;
|
|
int paren = 0;
|
|
|
|
const char *p = buf;
|
|
const char *last_sig_line = NULL;
|
|
|
|
while (*p) {
|
|
char c = *p;
|
|
|
|
if (in_line_comment) {
|
|
if (c == '\n') in_line_comment = 0;
|
|
p++;
|
|
continue;
|
|
}
|
|
if (in_block_comment) {
|
|
if (c == '*' && p[1] == '/') { in_block_comment = 0; p += 2; continue; }
|
|
p++;
|
|
continue;
|
|
}
|
|
|
|
if (!in_single && !in_double) {
|
|
if (c == '/' && p[1] == '/') { in_line_comment = 1; p += 2; continue; }
|
|
if (c == '/' && p[1] == '*') { in_block_comment = 1; p += 2; continue; }
|
|
}
|
|
|
|
if (in_single) {
|
|
if (!escape && c == '\\') { escape = 1; p++; continue; }
|
|
if (!escape && c == '\'') { in_single = 0; p++; continue; }
|
|
escape = 0; p++; continue;
|
|
} else if (in_double) {
|
|
if (!escape && c == '\\') { escape = 1; p++; continue; }
|
|
if (!escape && c == '"') { in_double = 0; p++; continue; }
|
|
escape = 0; p++; continue;
|
|
} else {
|
|
if (c == '\'') { in_single = 1; p++; continue; }
|
|
if (c == '"') { in_double = 1; p++; continue; }
|
|
if (c == '(') { paren++; p++; continue; }
|
|
if (c == ')') { if (paren > 0) paren--; p++; continue; }
|
|
}
|
|
|
|
if (c == '\n') {
|
|
const char *q = p + 1;
|
|
while (*q == ' ' || *q == '\t') q++;
|
|
if (*q && *q != '\n') last_sig_line = q;
|
|
}
|
|
p++;
|
|
}
|
|
|
|
if (!last_sig_line) {
|
|
const char *q = buf;
|
|
const char *candidate = NULL;
|
|
while (*q) {
|
|
const char *line_start = q;
|
|
while (*q && *q != '\n') q++;
|
|
const char *t = line_start;
|
|
while (*t == ' ' || *t == '\t') t++;
|
|
if (*t && *t != '\n' && *t != '\r') candidate = t;
|
|
if (*q == '\n') q++;
|
|
}
|
|
last_sig_line = candidate;
|
|
}
|
|
|
|
if (in_single || in_double || in_block_comment || paren > 0) return 1;
|
|
|
|
if (last_sig_line) {
|
|
if (strncmp(lstrip(last_sig_line), "if", 2) == 0 ||
|
|
strncmp(lstrip(last_sig_line), "else", 4) == 0 ||
|
|
strncmp(lstrip(last_sig_line), "while", 5) == 0 ||
|
|
strncmp(lstrip(last_sig_line), "for", 3) == 0 ||
|
|
strncmp(lstrip(last_sig_line), "fun", 3) == 0) {
|
|
return 1;
|
|
}
|
|
if (ends_with_opener(last_sig_line)) return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void show_repl_help(void) {
|
|
printf("Commands:\n");
|
|
printf(" :help | :h Show this help\n");
|
|
printf(" :quit | :q | :exit Exit the REPL\n");
|
|
printf(" :reset | :re Reset VM state (clears globals)\n");
|
|
printf(" :dump | :du | :globals | :gl Dump current globals\n");
|
|
printf(" :globals [pattern] Dump globals filtering by value substring\n");
|
|
printf(" :vars | :v [pattern] Alias for :globals\n");
|
|
printf(" :clear | :cl Clear current input buffer\n");
|
|
printf(" :print | :pr Show current buffer\n");
|
|
printf(" :run | :ru [file] Execute current buffer or the given file immediately\n");
|
|
printf(" :profile | :pf Execute buffer and show timing + instruction count\n");
|
|
printf(" :save | :sa <file> Save current buffer to file\n");
|
|
printf(" :load | :lo <file> Load file into buffer (does not run)\n");
|
|
printf(" :paste | :pa [run] Enter paste mode; end with a single '.' line (optional 'run')\n");
|
|
printf(" :history | :hi [N] Show last N lines of history (default 50)\n");
|
|
printf(" :time | :ti on|off|toggle Toggle/enable/disable timing\n");
|
|
printf(" :env | :en [NAME[=VALUE]] Get or set environment variable\n");
|
|
printf(" :backtrace | :bt | :ba Show backtrace of VM frames (most recent first)\n");
|
|
printf(" :frame | :fr N Select frame N for :locals/:list/:disasm (default: top)\n");
|
|
printf(" :list | :li [±K] Show K lines of source around current frame line (default 5)\n");
|
|
printf(" :disasm | :di [±N] Disassemble around current frame ip (default 5)\n");
|
|
printf(" :mdump | :md WHAT [offset [len]] [raw] [to <file>] Dump VM memory region\n");
|
|
printf(" WHAT = code | stack | globals | consts\n");
|
|
printf(" 'raw' writes binary bytes instead of a formatted hexdump\n");
|
|
printf(" :stack | :st [N] Show top N (default all) stack values\n");
|
|
printf(" :top | :to Show the top of the VM stack\n");
|
|
printf(" :locals | :lc [FRAME] Show locals of frame (default: selected frame)\n");
|
|
printf(" :printv | :pv WHAT Print value: local[i] | stack[i] | global[i]\n");
|
|
printf(" :break | :br [file:]line Set a breakpoint (default file = current frame file)\n");
|
|
printf(" :info | :in breaks List breakpoints\n");
|
|
printf(" :delete | :de ID Delete breakpoint by ID\n");
|
|
printf(" :clear breaks | :cb Remove all breakpoints\n");
|
|
printf(" :cont | :co Continue execution (exit REPL if in debug stop)\n");
|
|
printf(" :step | :sp Step one instruction\n");
|
|
printf(" :next | :ne Step over (current frame)\n");
|
|
printf(" :finish | :fi Run until the current frame returns\n");
|
|
}
|
|
|
|
static char *read_entire_file(const char *path, size_t *out_len) {
|
|
FILE *f = fopen(path, "rb");
|
|
if (!f) return NULL;
|
|
if (fseek(f, 0, SEEK_END) != 0) { fclose(f); return NULL; }
|
|
long sz = ftell(f);
|
|
if (sz < 0) { fclose(f); return NULL; }
|
|
rewind(f);
|
|
char *buf = (char*)malloc((size_t)sz + 1);
|
|
if (!buf) { fclose(f); return NULL; }
|
|
size_t n = fread(buf, 1, (size_t)sz, f);
|
|
fclose(f);
|
|
buf[n] = '\0';
|
|
if (out_len) *out_len = n;
|
|
return buf;
|
|
}
|
|
|
|
static int write_entire_file(const char *path, const char *data, size_t len) {
|
|
FILE *f = fopen(path, "wb");
|
|
if (!f) return 0;
|
|
size_t n = fwrite(data, 1, len, f);
|
|
fclose(f);
|
|
return n == len;
|
|
}
|
|
|
|
/* ---------- REPL command matching helper ---------- */
|
|
static int cmd_is_one_of(const char *cmd, const char *const names[]) {
|
|
if (!cmd || !*cmd) return 0;
|
|
for (int i = 0; names[i] != NULL; ++i) {
|
|
if (strcmp(cmd, names[i]) == 0) return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* ---------- Hexdump helper ---------- */
|
|
static void hexdump_to(FILE *out, const unsigned char *data, size_t len, size_t base_off) {
|
|
if (!out || !data || len == 0) return;
|
|
const size_t width = 16;
|
|
char ascii[17];
|
|
ascii[16] = '\0';
|
|
for (size_t i = 0; i < len; i += width) {
|
|
size_t chunk = (len - i < width) ? (len - i) : width;
|
|
/* address */
|
|
fprintf(out, "%08zx ", base_off + i);
|
|
/* hex bytes */
|
|
for (size_t j = 0; j < width; ++j) {
|
|
if (j < chunk) {
|
|
fprintf(out, "%02x ", data[i + j]);
|
|
unsigned char c = data[i + j];
|
|
ascii[j] = (c >= 32 && c <= 126) ? (char)c : '.';
|
|
} else {
|
|
fputs(" ", out);
|
|
ascii[j] = ' ';
|
|
}
|
|
if (j == 7) fputc(' ', out); /* extra space between 8-byte halves */
|
|
}
|
|
ascii[chunk < width ? chunk : width] = '\0';
|
|
fprintf(out, " |%s|\n", ascii);
|
|
}
|
|
}
|
|
|
|
static void print_last_n_lines(const char *path, int n) {
|
|
if (n <= 0) n = 50;
|
|
size_t flen = 0;
|
|
char *content = read_entire_file(path, &flen);
|
|
if (!content) {
|
|
printf("No history available.\n");
|
|
return;
|
|
}
|
|
int lines = 0;
|
|
for (size_t i = flen; i > 0; --i) {
|
|
if (content[i-1] == '\n') {
|
|
lines++;
|
|
if (lines > n) { content[i] = '\0'; printf("%s", content + i); free(content); return; }
|
|
}
|
|
}
|
|
printf("%s", content);
|
|
free(content);
|
|
}
|
|
|
|
static void append_history(FILE *hist, const char *buffer) {
|
|
if (!hist || !buffer) return;
|
|
fputs(buffer, hist);
|
|
if (buffer[0] && buffer[strlen(buffer)-1] != '\n') fputc('\n', hist);
|
|
fflush(hist);
|
|
}
|
|
|
|
/* ---------- Env helpers ---------- */
|
|
static void env_show_usage(void) {
|
|
printf("Usage:\n");
|
|
printf(" :env NAME Show environment variable NAME\n");
|
|
printf(" :env NAME=VALUE Set environment variable NAME to VALUE\n");
|
|
printf(" :env Show this usage\n");
|
|
}
|
|
|
|
static void env_get(const char *name) {
|
|
const char *v = getenv(name);
|
|
if (v) printf("%s=%s\n", name, v);
|
|
else printf("%s is not set\n", name);
|
|
}
|
|
|
|
static void env_set(const char *name, const char *value) {
|
|
#ifdef _WIN32
|
|
if (_putenv_s(name, value ? value : "") != 0) {
|
|
printf("Failed to set %s\n", name);
|
|
}
|
|
#else
|
|
if (setenv(name, value ? value : "", 1) != 0) {
|
|
printf("Failed to set %s\n", name);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/* ---------- REPL Entry ---------- */
|
|
|
|
int fun_run_repl(VM *vm) {
|
|
int repl_timing = 0;
|
|
int selected_frame = -1; /* -1 means use current top frame */
|
|
|
|
printf("Fun %s REPL\n", FUN_VERSION);
|
|
printf("Type :help for commands. Submit an empty line to run.\n");
|
|
|
|
/* Load stdlib symbols for completion */
|
|
{
|
|
char libdir[PATH_MAX];
|
|
const char *envlib = getenv("FUN_LIB_DIR");
|
|
if (envlib && *envlib) {
|
|
snprintf(libdir, sizeof(libdir), "%s", envlib);
|
|
} else {
|
|
#ifdef DEFAULT_LIB_DIR
|
|
snprintf(libdir, sizeof(libdir), "%s", DEFAULT_LIB_DIR);
|
|
#else
|
|
snprintf(libdir, sizeof(libdir), "%s", "lib");
|
|
#endif
|
|
}
|
|
/* strip trailing slash if present, not strictly necessary */
|
|
size_t L = strlen(libdir);
|
|
if (L > 1 && libdir[L - 1] == '/') libdir[L - 1] = '\0';
|
|
load_stdlib_symbols(libdir);
|
|
}
|
|
|
|
char *buffer = NULL;
|
|
size_t bufcap = 0;
|
|
size_t buflen = 0;
|
|
|
|
/* History setup */
|
|
char hist_path[1024];
|
|
FILE *hist = NULL;
|
|
const char *home = getenv("HOME");
|
|
if (!home) home = getenv("USERPROFILE");
|
|
if (home) {
|
|
snprintf(hist_path, sizeof(hist_path), "%s/.fun_history", home);
|
|
rl_hist_load_file(hist_path);
|
|
hist = fopen(hist_path, "a+");
|
|
} else {
|
|
snprintf(hist_path, sizeof(hist_path), ".fun_history");
|
|
rl_hist_load_file(hist_path);
|
|
hist = fopen(hist_path, "a+");
|
|
}
|
|
|
|
for (;;) {
|
|
if (buflen + 1 > bufcap) {
|
|
size_t newcap = bufcap == 0 ? 1024 : bufcap * 2;
|
|
while (newcap < buflen + 1) newcap *= 2;
|
|
buffer = (char*)realloc(buffer, newcap);
|
|
bufcap = newcap;
|
|
}
|
|
buffer[buflen] = '\0';
|
|
int indent_debt = (buflen > 0) ? compute_open_indent_blocks(buffer) : 0;
|
|
|
|
char prompt[64];
|
|
if (buflen == 0) {
|
|
snprintf(prompt, sizeof(prompt), "fun> ");
|
|
} else if (indent_debt > 0) {
|
|
snprintf(prompt, sizeof(prompt), "...%d> ", indent_debt);
|
|
} else {
|
|
snprintf(prompt, sizeof(prompt), "... ");
|
|
}
|
|
|
|
char line[4096];
|
|
#ifndef _WIN32
|
|
if (!read_line_edit(line, sizeof(line), prompt)) {
|
|
puts("");
|
|
break; // EOF
|
|
}
|
|
#else
|
|
fputs(prompt, stdout);
|
|
fflush(stdout);
|
|
if (!fgets(line, sizeof(line), stdin)) {
|
|
puts("");
|
|
break;
|
|
}
|
|
#endif
|
|
if (hist) {
|
|
const char *lp = line;
|
|
int only_nl = 1;
|
|
while (*lp) { if (*lp != '\n' && *lp != '\r') { only_nl = 0; break; } lp++; }
|
|
if (!only_nl) append_history(hist, line);
|
|
}
|
|
|
|
if (line[0] == ':') {
|
|
char cmd[64] = {0};
|
|
char arg[2048] = {0};
|
|
sscanf(line, ":%63s %2047[^\n]", cmd, arg);
|
|
|
|
if (cmd_is_one_of(cmd, (const char*[]){"quit","q","qu","exit", NULL})) {
|
|
break;
|
|
} else if (cmd_is_one_of(cmd, (const char*[]){"help","h", NULL})) {
|
|
show_repl_help();
|
|
continue;
|
|
} else if (cmd_is_one_of(cmd, (const char*[]){"reset","re", NULL})) {
|
|
vm_reset(vm);
|
|
printf("VM state reset.\n");
|
|
continue;
|
|
} else if (cmd_is_one_of(cmd, (const char*[]){"dump","du", NULL})) {
|
|
vm_dump_globals(vm);
|
|
continue;
|
|
} else if (cmd_is_one_of(cmd, (const char*[]){"globals","vars","gl","v","va", NULL})) {
|
|
const char *pattern = lstrip(arg);
|
|
int filtered = (pattern && *pattern);
|
|
printf("=== globals%s%s ===\n", filtered ? " matching '" : "", filtered ? pattern : "");
|
|
if (filtered) printf("'\n");
|
|
for (int i = 0; i < MAX_GLOBALS; ++i) {
|
|
if (vm->globals[i].type == VAL_NIL) continue;
|
|
char *sv = value_to_string_alloc(&vm->globals[i]);
|
|
if (!filtered || (sv && strstr(sv, pattern))) {
|
|
printf("[%d] %s\n", i, sv ? sv : "nil");
|
|
}
|
|
free(sv);
|
|
}
|
|
printf("===============\n");
|
|
continue;
|
|
} else if (cmd_is_one_of(cmd, (const char*[]){"clear","cl", NULL})) {
|
|
buflen = 0;
|
|
printf("(buffer cleared)\n");
|
|
continue;
|
|
} else if (cmd_is_one_of(cmd, (const char*[]){"print","pr", NULL})) {
|
|
if (buflen == 0) printf("(buffer empty)\n");
|
|
else {
|
|
if (buflen >= bufcap) {
|
|
buffer = (char*)realloc(buffer, buflen + 1);
|
|
bufcap = buflen + 1;
|
|
}
|
|
buffer[buflen] = '\0';
|
|
printf("%s", buffer);
|
|
if (buflen > 0 && buffer[buflen-1] != '\n') printf("\n");
|
|
}
|
|
continue;
|
|
} else if (cmd_is_one_of(cmd, (const char*[]){"run","ru","profile","pf", NULL})) {
|
|
int is_profile = cmd_is_one_of(cmd, (const char*[]){"profile","pf", NULL});
|
|
// 'arg' is a fixed-size local array, so its address is always non-null.
|
|
// Only check whether it contains a non-empty string.
|
|
int from_file = (arg[0] != '\0');
|
|
|
|
const char *src = NULL;
|
|
char *filebuf = NULL;
|
|
if (from_file) {
|
|
size_t flen = 0;
|
|
filebuf = read_entire_file(arg, &flen);
|
|
if (!filebuf) {
|
|
printf("Failed to load '%s'\n", arg);
|
|
continue;
|
|
}
|
|
src = filebuf;
|
|
} else {
|
|
if (buflen == 0) {
|
|
printf("(buffer empty)\n");
|
|
continue;
|
|
}
|
|
if (buflen + 1 > bufcap) {
|
|
buffer = (char*)realloc(buffer, buflen + 1);
|
|
bufcap = buflen + 1;
|
|
}
|
|
buffer[buflen] = '\0';
|
|
src = buffer;
|
|
}
|
|
|
|
clock_t t_parse0 = 0, t_parse1 = 0, t_run0 = 0, t_run1 = 0;
|
|
if (is_profile) t_parse0 = clock();
|
|
Bytecode *bc = parse_string_to_bytecode(src);
|
|
if (is_profile) t_parse1 = clock();
|
|
|
|
if (bc) {
|
|
if (repl_timing || is_profile) t_run0 = clock();
|
|
vm_run(vm, bc);
|
|
if (repl_timing || is_profile) t_run1 = clock();
|
|
|
|
if (is_profile) {
|
|
double ms_parse = (double)(t_parse1 - t_parse0) * 1000.0 / (double)CLOCKS_PER_SEC;
|
|
double ms_run = (double)(t_run1 - t_run0) * 1000.0 / (double)CLOCKS_PER_SEC;
|
|
printf("[profile] parse: %.2f ms, run: %.2f ms, total: %.2f ms, instr: %lld\n",
|
|
ms_parse, ms_run, ms_parse + ms_run, vm->instr_count);
|
|
} else if (repl_timing) {
|
|
double ms = (double)(t_run1 - t_run0) * 1000.0 / (double)CLOCKS_PER_SEC;
|
|
printf("[time] %.2f ms\n", ms);
|
|
}
|
|
|
|
vm_print_output(vm);
|
|
vm_clear_output(vm);
|
|
bytecode_free(bc);
|
|
if (!from_file) append_history(hist, buffer);
|
|
} else {
|
|
int line_no = 0, col_no = 0;
|
|
char emsg[256];
|
|
if (parser_last_error(emsg, sizeof(emsg), &line_no, &col_no)) {
|
|
printf("Parse error at %d:%d: %s\n", line_no, col_no, emsg);
|
|
int cur_line = 1;
|
|
const char *p = src ? src : buffer;
|
|
while (*p && cur_line < line_no) {
|
|
if (*p == '\n') cur_line++;
|
|
p++;
|
|
}
|
|
const char *line_start = p;
|
|
while (*p && *p != '\n') p++;
|
|
fwrite(line_start, 1, (size_t)(p - line_start), stdout);
|
|
printf("\n");
|
|
for (int i = 1; i < col_no; ++i) putchar(' ');
|
|
printf("^\n");
|
|
#ifdef FUN_DEBUG
|
|
if (hist && !from_file) {
|
|
fprintf(hist, "// ERROR %d:%d: %s\n", line_no, col_no, emsg);
|
|
fflush(hist);
|
|
}
|
|
#endif
|
|
} else {
|
|
printf("Parse error.\n");
|
|
#ifdef FUN_DEBUG
|
|
if (hist && !from_file) {
|
|
fprintf(hist, "// ERROR: parse error\n");
|
|
fflush(hist);
|
|
}
|
|
#endif
|
|
}
|
|
}
|
|
if (from_file) {
|
|
free(filebuf);
|
|
} else {
|
|
buflen = 0; /* keep behavior: clear buffer only when running current buffer */
|
|
}
|
|
continue;
|
|
} else if (cmd_is_one_of(cmd, (const char*[]){"save","sa", NULL})) {
|
|
if (arg[0] == '\0') { printf("Usage: :save <file>\n"); continue; }
|
|
if (buflen == 0) { printf("(buffer empty)\n"); continue; }
|
|
if (!write_entire_file(arg, buffer, buflen)) {
|
|
printf("Failed to save to '%s'\n", arg);
|
|
} else {
|
|
printf("Saved %zu bytes to '%s'\n", buflen, arg);
|
|
}
|
|
continue;
|
|
} else if (cmd_is_one_of(cmd, (const char*[]){"load","lo", NULL})) {
|
|
if (arg[0] == '\0') { printf("Usage: :load <file>\n"); continue; }
|
|
size_t flen = 0;
|
|
char *filebuf = read_entire_file(arg, &flen);
|
|
if (!filebuf) {
|
|
printf("Failed to load '%s'\n", arg);
|
|
continue;
|
|
}
|
|
if (flen + 1 > bufcap) {
|
|
size_t newcap = flen + 1;
|
|
buffer = (char*)realloc(buffer, newcap);
|
|
bufcap = newcap;
|
|
}
|
|
memcpy(buffer, filebuf, flen);
|
|
buflen = flen;
|
|
buffer[buflen] = '\0';
|
|
free(filebuf);
|
|
printf("Loaded %zu bytes into buffer. Use :run or submit an empty line to execute.\n", buflen);
|
|
continue;
|
|
} else if (cmd_is_one_of(cmd, (const char*[]){"paste","pa", NULL})) {
|
|
int run_after = 0;
|
|
const char *opt = lstrip(arg);
|
|
if (opt && (strcmp(opt, "run") == 0 || strcmp(opt, "exec") == 0)) run_after = 1;
|
|
printf("(paste mode: end with single '.' line)%s\n", run_after ? " [will run]" : "");
|
|
for (;;) {
|
|
fputs("... paste> ", stdout);
|
|
fflush(stdout);
|
|
char pline[8192];
|
|
if (!fgets(pline, sizeof(pline), stdin)) { puts(""); break; }
|
|
if ((strcmp(pline, ".\n") == 0) || (strcmp(pline, ".\r\n") == 0) || (strcmp(pline, ".") == 0)) {
|
|
break;
|
|
}
|
|
size_t pl = strlen(pline);
|
|
if (buflen + pl + 1 > bufcap) {
|
|
size_t newcap = bufcap == 0 ? 1024 : bufcap * 2;
|
|
while (newcap < buflen + pl + 1) newcap *= 2;
|
|
buffer = (char*)realloc(buffer, newcap);
|
|
bufcap = newcap;
|
|
}
|
|
memcpy(buffer + buflen, pline, pl);
|
|
buflen += pl;
|
|
}
|
|
if (run_after) {
|
|
if (buflen + 1 > bufcap) { buffer = (char*)realloc(buffer, buflen + 1); bufcap = buflen + 1; }
|
|
buffer[buflen] = '\0';
|
|
Bytecode *bc = parse_string_to_bytecode(buffer);
|
|
if (bc) {
|
|
clock_t t0 = clock();
|
|
vm_run(vm, bc);
|
|
clock_t t1 = clock();
|
|
double ms = (double)(t1 - t0) * 1000.0 / (double)CLOCKS_PER_SEC;
|
|
printf("[time] %.2f ms\n", ms);
|
|
vm_print_output(vm);
|
|
vm_clear_output(vm);
|
|
bytecode_free(bc);
|
|
append_history(hist, buffer);
|
|
} else {
|
|
int line_no = 0, col_no = 0;
|
|
char emsg[256];
|
|
if (parser_last_error(emsg, sizeof(emsg), &line_no, &col_no)) {
|
|
printf("Parse error at %d:%d: %s\n", line_no, col_no, emsg);
|
|
#ifdef FUN_DEBUG
|
|
if (hist) {
|
|
fprintf(hist, "// ERROR %d:%d: %s\n", line_no, col_no, emsg);
|
|
fflush(hist);
|
|
}
|
|
#endif
|
|
} else {
|
|
printf("Parse error.\n");
|
|
#ifdef FUN_DEBUG
|
|
if (hist) {
|
|
fprintf(hist, "// ERROR: parse error\n");
|
|
fflush(hist);
|
|
}
|
|
#endif
|
|
}
|
|
}
|
|
buflen = 0;
|
|
} else {
|
|
printf("(pasted %zu bytes into buffer)\n", buflen);
|
|
}
|
|
continue;
|
|
} else if (cmd_is_one_of(cmd, (const char*[]){"history","hi", NULL})) {
|
|
int n = 50;
|
|
if (arg[0] != '\0') n = atoi(arg);
|
|
if (n <= 0) n = 50;
|
|
print_last_n_lines(hist_path, n);
|
|
continue;
|
|
} else if (cmd_is_one_of(cmd, (const char*[]){"time","ti", NULL})) {
|
|
if (strcmp(lstrip(arg), "on") == 0) repl_timing = 1;
|
|
else if (strcmp(lstrip(arg), "off") == 0) repl_timing = 0;
|
|
else if (strcmp(lstrip(arg), "toggle") == 0) repl_timing = !repl_timing;
|
|
else {
|
|
printf("Usage: :time on|off|toggle (currently %s)\n", repl_timing ? "on" : "off");
|
|
continue;
|
|
}
|
|
printf("Timing %s\n", repl_timing ? "enabled" : "disabled");
|
|
continue;
|
|
} else if (cmd_is_one_of(cmd, (const char*[]){"env","en", NULL})) {
|
|
const char *spec = lstrip(arg);
|
|
if (!spec || *spec == '\0') {
|
|
env_show_usage();
|
|
continue;
|
|
}
|
|
const char *eq = strchr(spec, '=');
|
|
if (!eq) {
|
|
env_get(spec);
|
|
} else {
|
|
char name[256];
|
|
size_t nlen = (size_t)(eq - spec);
|
|
if (nlen >= sizeof(name)) nlen = sizeof(name) - 1;
|
|
memcpy(name, spec, nlen);
|
|
name[nlen] = '\0';
|
|
const char *val = eq + 1;
|
|
env_set(name, val);
|
|
}
|
|
continue;
|
|
} else if (cmd_is_one_of(cmd, (const char*[]){"backtrace","bt","ba", NULL})) {
|
|
if (vm->fp < 0) { printf("(no frames)\n"); continue; }
|
|
printf("Backtrace (most recent call first):\n");
|
|
for (int i = vm->fp; i >= 0; --i) {
|
|
Frame *f = &vm->frames[i];
|
|
const char *fname = (f->fn && f->fn->name) ? f->fn->name : "<entry>";
|
|
const char *sfile = (f->fn && f->fn->source_file) ? f->fn->source_file : "<unknown>";
|
|
int ip = f->ip - 1;
|
|
printf(" #%d %s at %s ip=%d line=%d\n", i, fname, sfile, ip, vm->current_line);
|
|
}
|
|
continue;
|
|
} else if (cmd_is_one_of(cmd, (const char*[]){"stack","st", NULL})) {
|
|
int n = -1;
|
|
const char *p = lstrip(arg);
|
|
if (p && *p) n = atoi(p);
|
|
int count = vm->sp + 1;
|
|
if (count <= 0) { printf("(stack empty)\n"); continue; }
|
|
int start = 0;
|
|
if (n > 0 && n < count) start = count - n;
|
|
printf("Stack size=%d\n", count);
|
|
for (int i = start; i < count; ++i) {
|
|
char *sv = value_to_string_alloc(&vm->stack[i]);
|
|
printf("[%d] %s\n", i, sv ? sv : "nil");
|
|
free(sv);
|
|
}
|
|
continue;
|
|
} else if (cmd_is_one_of(cmd, (const char*[]){"locals","lc", NULL})) {
|
|
int idx = (selected_frame >= 0 && selected_frame <= vm->fp) ? selected_frame : vm->fp;
|
|
const char *p = lstrip(arg);
|
|
if (p && *p) {
|
|
int v = atoi(p);
|
|
if (v >= 0 && v <= vm->fp) idx = v;
|
|
}
|
|
if (idx < 0) { printf("(no current frame)\n"); continue; }
|
|
Frame *f = &vm->frames[idx];
|
|
const char *fname = (f->fn && f->fn->name) ? f->fn->name : "<entry>";
|
|
printf("Locals in frame #%d (%s):\n", idx, fname);
|
|
int any = 0;
|
|
for (int i = 0; i < MAX_FRAME_LOCALS; ++i) {
|
|
if (f->locals[i].type != VAL_NIL) {
|
|
char *sv = value_to_string_alloc(&f->locals[i]);
|
|
printf(" %d: %s\n", i, sv ? sv : "nil");
|
|
free(sv);
|
|
any = 1;
|
|
}
|
|
}
|
|
if (!any) printf(" (no non-nil locals)\n");
|
|
continue;
|
|
} else if (cmd_is_one_of(cmd, (const char*[]){"frame","fr", NULL})) {
|
|
const char *p = lstrip(arg);
|
|
if (!p || !*p) { printf("Usage: :frame N\n"); continue; }
|
|
int v = atoi(p);
|
|
if (v < 0 || v > vm->fp) { printf("Invalid frame index. Current top is %d\n", vm->fp); continue; }
|
|
selected_frame = v;
|
|
Frame *f = &vm->frames[selected_frame];
|
|
const char *fname = (f->fn && f->fn->name) ? f->fn->name : "<entry>";
|
|
const char *sfile = (f->fn && f->fn->source_file) ? f->fn->source_file : "<unknown>";
|
|
printf("Selected frame #%d: %s (%s)\n", selected_frame, fname, sfile);
|
|
continue;
|
|
} else if (cmd_is_one_of(cmd, (const char*[]){"list","li", NULL})) {
|
|
int k = 5;
|
|
const char *p = lstrip(arg);
|
|
if (p && *p) k = atoi(p);
|
|
if (k <= 0) k = 5;
|
|
int idx = (selected_frame >= 0 && selected_frame <= vm->fp) ? selected_frame : vm->fp;
|
|
if (idx < 0) { printf("(no current frame)\n"); continue; }
|
|
Frame *f = &vm->frames[idx];
|
|
if (!f->fn || !f->fn->source_file) { printf("(no source info)\n"); continue; }
|
|
/* derive current line for this frame by scanning LINE markers up to ip-1 */
|
|
int line = vm->current_line;
|
|
int upto = f->ip - 1;
|
|
if (upto < 0) upto = 0;
|
|
for (int i = 0; i <= upto && i < f->fn->instr_count; ++i) {
|
|
Instruction ins = f->fn->instructions[i];
|
|
if (ins.op == OP_LINE) line = ins.operand;
|
|
}
|
|
const char *path = f->fn->source_file;
|
|
size_t flen = 0;
|
|
char *src = read_entire_file(path, &flen);
|
|
if (!src) { printf("Unable to read %s\n", path); continue; }
|
|
int start = line - k; if (start < 1) start = 1;
|
|
int end = line + k;
|
|
int cur = 1;
|
|
const char *s = src;
|
|
while (*s && cur <= end) {
|
|
const char *ls = s;
|
|
while (*s && *s != '\n') s++;
|
|
int print = (cur >= start && cur <= end);
|
|
if (print) {
|
|
printf("%c %5d | ", (cur == line ? '>' : ' '), cur);
|
|
fwrite(ls, 1, (size_t)(s - ls), stdout);
|
|
printf("\n");
|
|
}
|
|
if (*s == '\n') s++;
|
|
cur++;
|
|
}
|
|
free(src);
|
|
continue;
|
|
} else if (cmd_is_one_of(cmd, (const char*[]){"disasm","disassemble","di", NULL})) {
|
|
int n = 5;
|
|
const char *p = lstrip(arg);
|
|
if (p && *p) n = atoi(p);
|
|
if (n <= 0) n = 5;
|
|
int idx = (selected_frame >= 0 && selected_frame <= vm->fp) ? selected_frame : vm->fp;
|
|
if (idx < 0) { printf("(no current frame)\n"); continue; }
|
|
Frame *f = &vm->frames[idx];
|
|
if (!f->fn) { printf("(no function)\n"); continue; }
|
|
|
|
/* Ensure we have a valid instruction buffer */
|
|
if (f->fn->instr_count <= 0 || f->fn->instructions == NULL) {
|
|
printf("(no instructions)\n");
|
|
continue;
|
|
}
|
|
|
|
int count = f->fn->instr_count;
|
|
int curip = f->ip - 1;
|
|
if (curip < 0) curip = 0;
|
|
if (curip >= count) curip = count - 1;
|
|
|
|
int from = curip - n; if (from < 0) from = 0;
|
|
int to = curip + n; if (to >= count) to = count - 1;
|
|
if (to < from) { /* nothing to show */ continue; }
|
|
|
|
for (int i = from; i <= to; ++i) {
|
|
Instruction ins = f->fn->instructions[i];
|
|
const char *opname = opcode_is_valid(ins.op) ? opcode_names[ins.op] : "???";
|
|
printf("%c %6d: %-14s %d\n", (i == curip ? '>' : ' '), i, opname, ins.operand);
|
|
}
|
|
continue;
|
|
} else if (cmd_is_one_of(cmd, (const char*[]){"mdump","md", NULL})) {
|
|
/* Syntax: :mdump WHAT [offset [len]] [raw] [to <file>]
|
|
WHAT: code | stack | globals | consts
|
|
'raw' writes binary bytes instead of a formatted hexdump */
|
|
const char *p = lstrip(arg);
|
|
if (!p || !*p) {
|
|
printf("Usage: :mdump WHAT [offset [len]] [raw] [to <file>]\n");
|
|
printf(" WHAT = code | stack | globals | consts\n");
|
|
printf(" 'raw' writes binary bytes instead of a formatted hexdump\n");
|
|
continue;
|
|
}
|
|
|
|
char what[32];
|
|
int consumed = 0;
|
|
if (sscanf(p, "%31s %n", what, &consumed) != 1) {
|
|
printf("Usage: :mdump WHAT [offset [len]] [raw] [to <file>]\n");
|
|
continue;
|
|
}
|
|
p += consumed;
|
|
|
|
size_t off = 0;
|
|
size_t len = (size_t)-1; /* default later to clamp */
|
|
int want_raw = 0; /* output raw bytes instead of hexdump */
|
|
|
|
/* parse optional off */
|
|
while (*p == ' ' || *p == '\t') p++;
|
|
if (*p && (isdigit((unsigned char)*p))) {
|
|
char *endp = NULL;
|
|
long long v = strtoll(p, &endp, 10);
|
|
if (endp && endp != p && v >= 0) {
|
|
off = (size_t)v;
|
|
p = endp;
|
|
}
|
|
}
|
|
/* parse optional len */
|
|
while (*p == ' ' || *p == '\t') p++;
|
|
if (*p && (isdigit((unsigned char)*p))) {
|
|
char *endp = NULL;
|
|
long long v = strtoll(p, &endp, 10);
|
|
if (endp && endp != p && v >= 0) {
|
|
len = (size_t)v;
|
|
p = endp;
|
|
}
|
|
}
|
|
|
|
/* optional: 'raw' keyword */
|
|
while (*p == ' ' || *p == '\t') p++;
|
|
if (strncmp(p, "raw", 3) == 0 && (p[3] == '\0' || isspace((unsigned char)p[3]))) {
|
|
want_raw = 1;
|
|
p += 3;
|
|
}
|
|
|
|
/* optional: to <file> */
|
|
while (*p == ' ' || *p == '\t') p++;
|
|
int to_file = 0;
|
|
char path[PATH_MAX];
|
|
path[0] = '\0';
|
|
if (strncmp(p, "to", 2) == 0 && (p[2] == '\0' || isspace((unsigned char)p[2]))) {
|
|
p += 2;
|
|
while (*p == ' ' || *p == '\t') p++;
|
|
if (!*p) { printf("Missing <file> after 'to'\n"); continue; }
|
|
/* read until whitespace end or end of string; simple paths without spaces */
|
|
size_t i = 0;
|
|
while (*p && !isspace((unsigned char)*p) && i + 1 < sizeof(path)) path[i++] = *p++;
|
|
path[i] = '\0';
|
|
if (path[0] == '\0') { printf("Invalid file path\n"); continue; }
|
|
to_file = 1;
|
|
}
|
|
|
|
const unsigned char *base = NULL;
|
|
size_t total = 0;
|
|
int ok_region = 1;
|
|
|
|
if (strcmp(what, "code") == 0) {
|
|
int idx = (selected_frame >= 0 && selected_frame <= vm->fp) ? selected_frame : vm->fp;
|
|
if (idx < 0) { printf("(no current frame)\n"); continue; }
|
|
Frame *fr = &vm->frames[idx];
|
|
if (!fr->fn || fr->fn->instr_count <= 0 || fr->fn->instructions == NULL) {
|
|
printf("(no code to dump)\n"); continue;
|
|
}
|
|
base = (const unsigned char*)fr->fn->instructions;
|
|
total = (size_t)fr->fn->instr_count * sizeof(Instruction);
|
|
} else if (strcmp(what, "consts") == 0) {
|
|
int idx = (selected_frame >= 0 && selected_frame <= vm->fp) ? selected_frame : vm->fp;
|
|
if (idx < 0) { printf("(no current frame)\n"); continue; }
|
|
Frame *fr = &vm->frames[idx];
|
|
if (!fr->fn || fr->fn->const_count <= 0 || fr->fn->constants == NULL) {
|
|
printf("(no constants to dump)\n"); continue;
|
|
}
|
|
base = (const unsigned char*)fr->fn->constants;
|
|
total = (size_t)fr->fn->const_count * sizeof(Value);
|
|
} else if (strcmp(what, "stack") == 0) {
|
|
int count = vm->sp + 1;
|
|
if (count <= 0) { printf("(stack empty)\n"); continue; }
|
|
base = (const unsigned char*)vm->stack;
|
|
total = (size_t)count * sizeof(Value);
|
|
} else if (strcmp(what, "globals") == 0) {
|
|
base = (const unsigned char*)vm->globals;
|
|
total = (size_t)MAX_GLOBALS * sizeof(Value);
|
|
} else {
|
|
ok_region = 0;
|
|
}
|
|
|
|
if (!ok_region) {
|
|
printf("Unknown region '%s'. Use one of: code, stack, globals, consts\n", what);
|
|
continue;
|
|
}
|
|
if (!base || total == 0) { printf("(nothing to dump)\n"); continue; }
|
|
|
|
if (off >= total) { printf("(empty range: offset beyond end)\n"); continue; }
|
|
size_t avail = total - off;
|
|
if (len == (size_t)-1 || len == 0 || len > avail) {
|
|
/* default to min(256, avail) */
|
|
len = avail < 256 ? avail : 256;
|
|
}
|
|
|
|
if (!to_file) {
|
|
if (want_raw) {
|
|
/* Write raw bytes directly to stdout with no header */
|
|
fwrite(base + off, 1, len, stdout);
|
|
fflush(stdout);
|
|
} else {
|
|
printf("Hexdump %s: total=%zu, offset=%zu, len=%zu\n", what, total, off, len);
|
|
hexdump_to(stdout, base + off, len, off);
|
|
}
|
|
} else {
|
|
FILE *fout = fopen(path, "wb");
|
|
if (!fout) { printf("Failed to open '%s' for writing\n", path); continue; }
|
|
if (want_raw) {
|
|
fwrite(base + off, 1, len, fout);
|
|
fclose(fout);
|
|
printf("Wrote raw bytes (%zu from %s) to %s\n", len, what, path);
|
|
} else {
|
|
hexdump_to(fout, base + off, len, off);
|
|
fclose(fout);
|
|
printf("Wrote hexdump (%zu bytes from %s) to %s\n", len, what, path);
|
|
}
|
|
}
|
|
continue;
|
|
} else if (cmd_is_one_of(cmd, (const char*[]){"printv","pv", NULL})) {
|
|
const char *spec = lstrip(arg);
|
|
if (!spec || !*spec) { printf("Usage: :printv local[i] | stack[i] | global[i]\n"); continue; }
|
|
int idx = -1;
|
|
if (sscanf(spec, "local[%d]", &idx) == 1) {
|
|
int fidx = (selected_frame >= 0 && selected_frame <= vm->fp) ? selected_frame : vm->fp;
|
|
if (fidx < 0 || idx < 0 || idx >= MAX_FRAME_LOCALS) { printf("(out of range)\n"); continue; }
|
|
Frame *f = &vm->frames[fidx];
|
|
char *sv = value_to_string_alloc(&f->locals[idx]);
|
|
printf("%s\n", sv ? sv : "nil");
|
|
free(sv);
|
|
} else if (sscanf(spec, "stack[%d]", &idx) == 1) {
|
|
if (idx < 0 || idx > vm->sp) { printf("(out of range)\n"); continue; }
|
|
char *sv = value_to_string_alloc(&vm->stack[idx]);
|
|
printf("%s\n", sv ? sv : "nil");
|
|
free(sv);
|
|
} else if (sscanf(spec, "global[%d]", &idx) == 1) {
|
|
if (idx < 0 || idx >= MAX_GLOBALS) { printf("(out of range)\n"); continue; }
|
|
char *sv = value_to_string_alloc(&vm->globals[idx]);
|
|
printf("%s\n", sv ? sv : "nil");
|
|
free(sv);
|
|
} else {
|
|
printf("Usage: :printv local[i] | stack[i] | global[i]\n");
|
|
}
|
|
continue;
|
|
} else if (cmd_is_one_of(cmd, (const char*[]){"top","to", NULL})) {
|
|
if (vm->sp < 0) { printf("(stack empty)\n"); continue; }
|
|
char *sv = value_to_string_alloc(&vm->stack[vm->sp]);
|
|
printf("%s\n", sv ? sv : "nil");
|
|
free(sv);
|
|
continue;
|
|
} else if (cmd_is_one_of(cmd, (const char*[]){"break","br", NULL})) {
|
|
const char *p = lstrip(arg);
|
|
if (!p || !*p) { printf("Usage: :break [file:]line\n"); continue; }
|
|
const char *colon = strchr(p, ':');
|
|
char filebuf[1024];
|
|
int line = 0;
|
|
if (colon) {
|
|
size_t fl = (size_t)(colon - p);
|
|
if (fl >= sizeof(filebuf)) fl = sizeof(filebuf) - 1;
|
|
memcpy(filebuf, p, fl);
|
|
filebuf[fl] = '\0';
|
|
line = atoi(colon + 1);
|
|
} else {
|
|
int idxf = (selected_frame >= 0 && selected_frame <= vm->fp) ? selected_frame : vm->fp;
|
|
if (idxf < 0) { printf("(no current frame)\n"); continue; }
|
|
Frame *f = &vm->frames[idxf];
|
|
const char *sf = (f->fn && f->fn->source_file) ? f->fn->source_file : NULL;
|
|
if (!sf) { printf("(no current source file)\n"); continue; }
|
|
snprintf(filebuf, sizeof(filebuf), "%s", sf);
|
|
line = atoi(p);
|
|
}
|
|
if (line <= 0) { printf("Invalid line\n"); continue; }
|
|
int id = vm_debug_add_breakpoint(vm, filebuf, line);
|
|
if (id >= 0) printf("Breakpoint %d set at %s:%d\n", id, filebuf, line);
|
|
else printf("Failed to set breakpoint\n");
|
|
continue;
|
|
} else if (cmd_is_one_of(cmd, (const char*[]){"info","in", NULL})) {
|
|
const char *what = lstrip(arg);
|
|
if (what && strcmp(what, "breaks") == 0) {
|
|
vm_debug_list_breakpoints(vm);
|
|
} else {
|
|
printf("Usage: :info breaks\n");
|
|
}
|
|
continue;
|
|
} else if (cmd_is_one_of(cmd, (const char*[]){"delete","de", NULL})) {
|
|
int id = atoi(lstrip(arg));
|
|
if (vm_debug_delete_breakpoint(vm, id)) printf("Deleted breakpoint %d\n", id);
|
|
else printf("No such breakpoint %d\n", id);
|
|
continue;
|
|
} else if (cmd_is_one_of(cmd, (const char*[]){"cb", NULL})) {
|
|
vm_debug_clear_breakpoints(vm);
|
|
printf("Cleared all breakpoints\n");
|
|
continue;
|
|
} else if (strcmp(cmd, "clear") == 0) {
|
|
const char *what = lstrip(arg);
|
|
if (what && strcmp(what, "breaks") == 0) {
|
|
vm_debug_clear_breakpoints(vm);
|
|
printf("Cleared all breakpoints\n");
|
|
} else {
|
|
printf("Usage: :clear breaks\n");
|
|
}
|
|
continue;
|
|
} else if (cmd_is_one_of(cmd, (const char*[]){"cont","continue","co", NULL})) {
|
|
vm_debug_request_continue(vm);
|
|
printf("Continuing...\n");
|
|
if (vm->on_error_repl) return 0; /* exit REPL to continue execution */
|
|
continue;
|
|
} else if (cmd_is_one_of(cmd, (const char*[]){"step","sp", NULL})) {
|
|
vm_debug_request_step(vm);
|
|
printf("Stepping one instruction...\n");
|
|
if (vm->on_error_repl) return 0;
|
|
continue;
|
|
} else if (cmd_is_one_of(cmd, (const char*[]){"next","ne", NULL})) {
|
|
vm_debug_request_next(vm);
|
|
printf("Stepping over...\n");
|
|
if (vm->on_error_repl) return 0;
|
|
continue;
|
|
} else if (cmd_is_one_of(cmd, (const char*[]){"finish","fi", NULL})) {
|
|
vm_debug_request_finish(vm);
|
|
printf("Running until current frame returns...\n");
|
|
if (vm->on_error_repl) return 0;
|
|
continue;
|
|
} else {
|
|
printf("Unknown command. Use :help\n");
|
|
continue;
|
|
}
|
|
}
|
|
|
|
if (is_blank_line(line)) {
|
|
if (buflen == 0) continue;
|
|
|
|
if (buflen + 1 > bufcap) {
|
|
buffer = (char*)realloc(buffer, buflen + 1);
|
|
bufcap = buflen + 1;
|
|
}
|
|
buffer[buflen] = '\0';
|
|
|
|
int indent_debt2 = compute_open_indent_blocks(buffer);
|
|
if (buffer_looks_incomplete(buffer) || indent_debt2 > 0) {
|
|
if (indent_debt2 > 0) {
|
|
printf("(incomplete, open block indent +%d)\n", indent_debt2);
|
|
} else {
|
|
printf("(incomplete, continue typing)\n");
|
|
}
|
|
continue;
|
|
}
|
|
|
|
Bytecode *bc = parse_string_to_bytecode(buffer);
|
|
if (bc) {
|
|
clock_t t0 = 0, t1 = 0;
|
|
if (repl_timing) t0 = clock();
|
|
vm_run(vm, bc);
|
|
if (repl_timing) {
|
|
t1 = clock();
|
|
double ms = (double)(t1 - t0) * 1000.0 / (double)CLOCKS_PER_SEC;
|
|
printf("[time] %.2f ms\n", ms);
|
|
}
|
|
vm_print_output(vm);
|
|
vm_clear_output(vm);
|
|
bytecode_free(bc);
|
|
append_history(hist, buffer);
|
|
} else {
|
|
int line_no = 0, col_no = 0;
|
|
char emsg[256];
|
|
if (parser_last_error(emsg, sizeof(emsg), &line_no, &col_no)) {
|
|
printf("Parse error at %d:%d: %s\n", line_no, col_no, emsg);
|
|
int cur_line = 1;
|
|
const char *p = buffer;
|
|
while (*p && cur_line < line_no) {
|
|
if (*p == '\n') cur_line++;
|
|
p++;
|
|
}
|
|
const char *line_start = p;
|
|
while (*p && *p != '\n') p++;
|
|
fwrite(line_start, 1, (size_t)(p - line_start), stdout);
|
|
printf("\n");
|
|
for (int i = 1; i < col_no; ++i) putchar(' ');
|
|
printf("^\n");
|
|
#ifdef FUN_DEBUG
|
|
if (hist) {
|
|
fprintf(hist, "// ERROR %d:%d: %s\n", line_no, col_no, emsg);
|
|
fflush(hist);
|
|
}
|
|
#endif
|
|
} else {
|
|
printf("Parse error.\n");
|
|
#ifdef FUN_DEBUG
|
|
if (hist) {
|
|
fprintf(hist, "// ERROR: parse error\n");
|
|
fflush(hist);
|
|
}
|
|
#endif
|
|
}
|
|
}
|
|
buflen = 0;
|
|
continue;
|
|
}
|
|
|
|
size_t linelen = strlen(line);
|
|
if (buflen + linelen + 1 > bufcap) {
|
|
size_t newcap = bufcap == 0 ? 1024 : bufcap * 2;
|
|
while (newcap < buflen + linelen + 1) newcap *= 2;
|
|
buffer = (char*)realloc(buffer, newcap);
|
|
bufcap = newcap;
|
|
}
|
|
memcpy(buffer + buflen, line, linelen);
|
|
buflen += linelen;
|
|
}
|
|
|
|
if (hist) fclose(hist);
|
|
free_stdlib_symbols();
|
|
free(buffer);
|
|
return 0;
|
|
}
|
|
|
|
#endif /* FUN_WITH_REPL */
|