Add preliminary debugger to default repl.

Also upddate colors, and fix formatting.

src/boot/boot.janet

@@ -1724,15 +1724,33 @@
   get a chunk of source code that should return nil for end of file.
   The second parameter is a function that is called when a signal is
   caught."
-  [&opt chunks onsignal]
-  (def newenv (make-env))
+  [&opt chunks onsignal env]
+  (def level (+ (dyn :debug-level 0) 1))
+  (default env (make-env))
   (default onsignal (fn [f x]
                       (case (fiber/status f)
                         :dead (do
                                 (pp x)
-                                (put newenv '_ @{:value x}))
-                        (debug/stacktrace f x))))
-  (run-context {:env newenv
+                                (put env '_ @{:value x}))
+                        (let [nextenv (make-env env)]
+                          (put nextenv '_fiber @{:value f})
+                          (put nextenv '_signal @{:value x})
+                          (setdyn :debug-level level)
+                          (debug/stacktrace f x)
+                          (print ```
+
+entering debugger - Ctrl-D to exit
+_fiber is bound to the suspended fiber
+_signal is the error or signal value
+
+```)
+                          (repl (fn [buf p]
+                                  (def status (parser/state p))
+                                  (def c (parser/where p))
+                                  (def prompt (string "debug[" level "]:" c ":" status "> "))
+                                  (getline prompt buf))
+                                onsignal nextenv)))))
+  (run-context {:env env
                 :chunks chunks
                 :on-status onsignal
                 :source "repl"}))

src/core/inttypes.c

@@ -83,7 +83,8 @@ static const JanetAbstractType it_u64_type = {
 
 int64_t janet_unwrap_s64(Janet x) {
     switch (janet_type(x)) {
-        default: break;
+        default:
+            break;
         case JANET_NUMBER : {
             double dbl = janet_unwrap_number(x);
             if (fabs(dbl) <=  MAX_INT_IN_DBL)
@@ -111,7 +112,8 @@ int64_t janet_unwrap_s64(Janet x) {
 
 uint64_t janet_unwrap_u64(Janet x) {
     switch (janet_type(x)) {
-        default: break;
+        default:
+            break;
         case JANET_NUMBER : {
             double dbl = janet_unwrap_number(x);
             if ((dbl >= 0) && (dbl <= MAX_INT_IN_DBL))

src/core/pp.c

@@ -314,23 +314,24 @@ static void print_newline(struct pretty *S, int just_a_space) {
 }
 
 /* Color coding for types */
+static const char janet_cycle_color[] = "\x1B[36m";
 static const char *janet_pretty_colors[] = {
     "\x1B[32m",
     "\x1B[36m",
     "\x1B[36m",
-    NULL,
+    "\x1B[36m",
     "\x1B[35m",
     "\x1B[34m",
     "\x1B[33m",
-    NULL,
-    NULL,
-    NULL,
-    NULL,
+    "\x1B[36m",
+    "\x1B[36m",
+    "\x1B[36m",
+    "\x1B[36m"
     "\x1B[35m",
-    NULL,
-    NULL,
-    NULL,
-    NULL
+    "\x1B[36m",
+    "\x1B[36m",
+    "\x1B[36m",
+    "\x1B[36m"
 };
 
 #define JANET_PRETTY_DICT_ONELINE 4
@@ -348,9 +349,15 @@ static void janet_pretty_one(struct pretty *S, Janet x, int is_dict_value) {
         default: {
             Janet seenid = janet_table_get(&S->seen, x);
             if (janet_checktype(seenid, JANET_NUMBER)) {
+                if (S->flags & JANET_PRETTY_COLOR) {
+                    janet_buffer_push_cstring(S->buffer, janet_cycle_color);
+                }
                 janet_buffer_push_cstring(S->buffer, "<cycle ");
                 integer_to_string_b(S->buffer, janet_unwrap_integer(seenid));
                 janet_buffer_push_u8(S->buffer, '>');
+                if (S->flags & JANET_PRETTY_COLOR) {
+                    janet_buffer_push_cstring(S->buffer, "\x1B[0m");
+                }
                 return;
             } else {
                 janet_table_put(&S->seen, x, janet_wrap_integer(S->seen.count));

src/core/wrap.c

@@ -27,54 +27,132 @@
 
 /* Macro fills */
 
-JanetType (janet_type)(Janet x) { return janet_type(x); }
-int (janet_checktype)(Janet x, JanetType type) { return janet_checktype(x, type); }
-int (janet_checktypes)(Janet x, int typeflags) { return janet_checktypes(x, typeflags); }
-int (janet_truthy)(Janet x) { return janet_truthy(x); }
+JanetType(janet_type)(Janet x) {
+    return janet_type(x);
+}
+int (janet_checktype)(Janet x, JanetType type) {
+    return janet_checktype(x, type);
+}
+int (janet_checktypes)(Janet x, int typeflags) {
+    return janet_checktypes(x, typeflags);
+}
+int (janet_truthy)(Janet x) {
+    return janet_truthy(x);
+}
 
-const JanetKV *(janet_unwrap_struct)(Janet x) { return janet_unwrap_struct(x); }
-const Janet *(janet_unwrap_tuple)(Janet x) { return janet_unwrap_tuple(x); }
-JanetFiber *(janet_unwrap_fiber)(Janet x) { return janet_unwrap_fiber(x); }
-JanetArray *(janet_unwrap_array)(Janet x) { return janet_unwrap_array(x); }
-JanetTable *(janet_unwrap_table)(Janet x) { return janet_unwrap_table(x); }
-JanetBuffer *(janet_unwrap_buffer)(Janet x) { return janet_unwrap_buffer(x); }
-const uint8_t *(janet_unwrap_string)(Janet x) { return janet_unwrap_string(x); }
-const uint8_t *(janet_unwrap_symbol)(Janet x) { return janet_unwrap_symbol(x); }
-const uint8_t *(janet_unwrap_keyword)(Janet x) { return janet_unwrap_keyword(x); }
-void *(janet_unwrap_abstract)(Janet x) { return janet_unwrap_abstract(x); }
-void *(janet_unwrap_pointer)(Janet x) { return janet_unwrap_pointer(x); }
-JanetFunction *(janet_unwrap_function)(Janet x) { return janet_unwrap_function(x); }
-JanetCFunction (janet_unwrap_cfunction)(Janet x) { return janet_unwrap_cfunction(x); }
-int (janet_unwrap_boolean)(Janet x) { return janet_unwrap_boolean(x); }
-int32_t (janet_unwrap_integer)(Janet x) { return janet_unwrap_integer(x); }
+const JanetKV *(janet_unwrap_struct)(Janet x) {
+    return janet_unwrap_struct(x);
+}
+const Janet *(janet_unwrap_tuple)(Janet x) {
+    return janet_unwrap_tuple(x);
+}
+JanetFiber *(janet_unwrap_fiber)(Janet x) {
+    return janet_unwrap_fiber(x);
+}
+JanetArray *(janet_unwrap_array)(Janet x) {
+    return janet_unwrap_array(x);
+}
+JanetTable *(janet_unwrap_table)(Janet x) {
+    return janet_unwrap_table(x);
+}
+JanetBuffer *(janet_unwrap_buffer)(Janet x) {
+    return janet_unwrap_buffer(x);
+}
+const uint8_t *(janet_unwrap_string)(Janet x) {
+    return janet_unwrap_string(x);
+}
+const uint8_t *(janet_unwrap_symbol)(Janet x) {
+    return janet_unwrap_symbol(x);
+}
+const uint8_t *(janet_unwrap_keyword)(Janet x) {
+    return janet_unwrap_keyword(x);
+}
+void *(janet_unwrap_abstract)(Janet x) {
+    return janet_unwrap_abstract(x);
+}
+void *(janet_unwrap_pointer)(Janet x) {
+    return janet_unwrap_pointer(x);
+}
+JanetFunction *(janet_unwrap_function)(Janet x) {
+    return janet_unwrap_function(x);
+}
+JanetCFunction(janet_unwrap_cfunction)(Janet x) {
+    return janet_unwrap_cfunction(x);
+}
+int (janet_unwrap_boolean)(Janet x) {
+    return janet_unwrap_boolean(x);
+}
+int32_t (janet_unwrap_integer)(Janet x) {
+    return janet_unwrap_integer(x);
+}
 
 #if defined(JANET_NANBOX_32) || defined(JANET_NANBOX_64)
-Janet (janet_wrap_nil)(void) { return janet_wrap_nil(); }
-Janet (janet_wrap_true)(void) { return janet_wrap_true(); }
-Janet (janet_wrap_false)(void) { return janet_wrap_false(); }
-Janet (janet_wrap_boolean)(int x) { return janet_wrap_boolean(x); }
-Janet (janet_wrap_string)(const uint8_t *x) { return janet_wrap_string(x); }
-Janet (janet_wrap_symbol)(const uint8_t *x) { return janet_wrap_symbol(x); }
-Janet (janet_wrap_keyword)(const uint8_t *x) { return janet_wrap_keyword(x); }
-Janet (janet_wrap_array)(JanetArray *x) { return janet_wrap_array(x); }
-Janet (janet_wrap_tuple)(const Janet *x) { return janet_wrap_tuple(x); }
-Janet (janet_wrap_struct)(const JanetKV *x) { return janet_wrap_struct(x); }
-Janet (janet_wrap_fiber)(JanetFiber *x) { return janet_wrap_fiber(x); }
-Janet (janet_wrap_buffer)(JanetBuffer *x) { return janet_wrap_buffer(x); }
-Janet (janet_wrap_function)(JanetFunction *x) { return janet_wrap_function(x); }
-Janet (janet_wrap_cfunction)(JanetCFunction x) { return janet_wrap_cfunction(x); }
-Janet (janet_wrap_table)(JanetTable *x) { return janet_wrap_table(x); }
-Janet (janet_wrap_abstract)(void *x) { return janet_wrap_abstract(x); }
-Janet (janet_wrap_pointer)(void *x) { return janet_wrap_pointer(x); }
-Janet (janet_wrap_integer)(int32_t x) { return janet_wrap_integer(x); }
+Janet(janet_wrap_nil)(void) {
+    return janet_wrap_nil();
+}
+Janet(janet_wrap_true)(void) {
+    return janet_wrap_true();
+}
+Janet(janet_wrap_false)(void) {
+    return janet_wrap_false();
+}
+Janet(janet_wrap_boolean)(int x) {
+    return janet_wrap_boolean(x);
+}
+Janet(janet_wrap_string)(const uint8_t *x) {
+    return janet_wrap_string(x);
+}
+Janet(janet_wrap_symbol)(const uint8_t *x) {
+    return janet_wrap_symbol(x);
+}
+Janet(janet_wrap_keyword)(const uint8_t *x) {
+    return janet_wrap_keyword(x);
+}
+Janet(janet_wrap_array)(JanetArray *x) {
+    return janet_wrap_array(x);
+}
+Janet(janet_wrap_tuple)(const Janet *x) {
+    return janet_wrap_tuple(x);
+}
+Janet(janet_wrap_struct)(const JanetKV *x) {
+    return janet_wrap_struct(x);
+}
+Janet(janet_wrap_fiber)(JanetFiber *x) {
+    return janet_wrap_fiber(x);
+}
+Janet(janet_wrap_buffer)(JanetBuffer *x) {
+    return janet_wrap_buffer(x);
+}
+Janet(janet_wrap_function)(JanetFunction *x) {
+    return janet_wrap_function(x);
+}
+Janet(janet_wrap_cfunction)(JanetCFunction x) {
+    return janet_wrap_cfunction(x);
+}
+Janet(janet_wrap_table)(JanetTable *x) {
+    return janet_wrap_table(x);
+}
+Janet(janet_wrap_abstract)(void *x) {
+    return janet_wrap_abstract(x);
+}
+Janet(janet_wrap_pointer)(void *x) {
+    return janet_wrap_pointer(x);
+}
+Janet(janet_wrap_integer)(int32_t x) {
+    return janet_wrap_integer(x);
+}
 #endif
 
 #ifndef JANET_NANBOX_32
-double (janet_unwrap_number)(Janet x) { return janet_unwrap_number(x); }
+double (janet_unwrap_number)(Janet x) {
+    return janet_unwrap_number(x);
+}
 #endif
 
 #ifdef JANET_NANBOX_64
-Janet (janet_wrap_number)(double x) { return janet_wrap_number(x); }
+Janet(janet_wrap_number)(double x) {
+    return janet_wrap_number(x);
+}
 #endif
 
 /*****/

src/mainclient/line.c

@@ -94,6 +94,7 @@ static int cols = 80;
 static char *history[JANET_HISTORY_MAX];
 static int history_count = 0;
 static int historyi = 0;
+static int sigint_flag = 0;
 static struct termios termios_start;
 
 /* Unsupported terminal list from linenoise */
@@ -333,6 +334,7 @@ static int line() {
                 return 0;
             case 3:     /* ctrl-c */
                 errno = EAGAIN;
+                sigint_flag = 1;
                 return -1;
             case 127:   /* backspace */
             case 8:     /* ctrl-h */
@@ -458,7 +460,11 @@ void janet_line_get(const char *p, JanetBuffer *buffer) {
     }
     if (line()) {
         norawmode();
-        fputc('\n', stdout);
+        if (sigint_flag) {
+            raise(SIGINT);
+        } else {
+            fputc('\n', stdout);
+        }
         return;
     }
     norawmode();