altos/scheme: Rename to 'scheme', clean up build

[fw/altos] / src / scheme / ao_scheme_error.c

diff --git a/src/scheme/ao_scheme_error.c b/src/scheme/ao_scheme_error.c
new file mode 100644 (file)
index 0000000..d580a2c
--- /dev/null
+++ b/src/scheme/ao_scheme_error.c
@@ -0,0 +1,139 @@
+/*
+ * Copyright © 2016 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ */
+
+#include "ao_scheme.h"
+#include <stdarg.h>
+
+void
+ao_scheme_error_poly(char *name, ao_poly poly, ao_poly last)
+{
+       int first = 1;
+       printf("\t\t%s(", name);
+       if (ao_scheme_poly_type(poly) == AO_SCHEME_CONS) {
+               if (poly) {
+                       while (poly) {
+                               struct ao_scheme_cons *cons = ao_scheme_poly_cons(poly);
+                               if (!first)
+                                       printf("\t\t         ");
+                               else
+                                       first = 0;
+                               ao_scheme_poly_write(cons->car);
+                               printf("\n");
+                               if (poly == last)
+                                       break;
+                               poly = cons->cdr;
+                       }
+                       printf("\t\t         )\n");
+               } else
+                       printf(")\n");
+       } else {
+               ao_scheme_poly_write(poly);
+               printf("\n");
+       }
+}
+
+static void tabs(int indent)
+{
+       while (indent--)
+               printf("\t");
+}
+
+void
+ao_scheme_error_frame(int indent, char *name, struct ao_scheme_frame *frame)
+{
+       int                     f;
+
+       tabs(indent);
+       printf ("%s{", name);
+       if (frame) {
+               struct ao_scheme_frame_vals     *vals = ao_scheme_poly_frame_vals(frame->vals);
+               if (frame->type & AO_SCHEME_FRAME_PRINT)
+                       printf("recurse...");
+               else {
+                       frame->type |= AO_SCHEME_FRAME_PRINT;
+                       for (f = 0; f < frame->num; f++) {
+                               if (f != 0) {
+                                       tabs(indent);
+                                       printf("         ");
+                               }
+                               ao_scheme_poly_write(vals->vals[f].atom);
+                               printf(" = ");
+                               ao_scheme_poly_write(vals->vals[f].val);
+                               printf("\n");
+                       }
+                       if (frame->prev)
+                               ao_scheme_error_frame(indent + 1, "prev:   ", ao_scheme_poly_frame(frame->prev));
+                       frame->type &= ~AO_SCHEME_FRAME_PRINT;
+               }
+               tabs(indent);
+               printf("        }\n");
+       } else
+               printf ("}\n");
+}
+
+void
+ao_scheme_vprintf(char *format, va_list args)
+{
+       char c;
+
+       while ((c = *format++) != '\0') {
+               if (c == '%') {
+                       switch (c = *format++) {
+                       case 'v':
+                               ao_scheme_poly_write((ao_poly) va_arg(args, unsigned int));
+                               break;
+                       case 'p':
+                               printf("%p", va_arg(args, void *));
+                               break;
+                       case 'd':
+                               printf("%d", va_arg(args, int));
+                               break;
+                       case 's':
+                               printf("%s", va_arg(args, char *));
+                               break;
+                       default:
+                               putchar(c);
+                               break;
+                       }
+               } else
+                       putchar(c);
+       }
+}
+
+void
+ao_scheme_printf(char *format, ...)
+{
+       va_list args;
+       va_start(args, format);
+       ao_scheme_vprintf(format, args);
+       va_end(args);
+}
+
+ao_poly
+ao_scheme_error(int error, char *format, ...)
+{
+       va_list args;
+
+       ao_scheme_exception |= error;
+       va_start(args, format);
+       ao_scheme_vprintf(format, args);
+       putchar('\n');
+       va_end(args);
+       ao_scheme_printf("Value:  %v\n", ao_scheme_v);
+       ao_scheme_printf("Frame:  %v\n", ao_scheme_frame_poly(ao_scheme_frame_current));
+       printf("Stack:\n");
+       ao_scheme_stack_write(ao_scheme_stack_poly(ao_scheme_stack));
+       ao_scheme_printf("Globals: %v\n", ao_scheme_frame_poly(ao_scheme_frame_global));
+       return AO_SCHEME_NIL;
+}