mescc: Support ?.

* module/language/c99/compiler.mes (ast->info): Support cond-expr.
* scaffold/t.c (test): Test it.

module/language/c99/compiler.mes

@@ -380,6 +380,41 @@
                           body-text)
                   #:globals (.globals body-info))))
 
+        ((expr-stmt (cond-expr ,test ,then ,else))
+         (let* ((text-length (length text))
+
+                (test-jump->info ((test->jump->info info) test))
+                (test+jump-info (test-jump->info 0))
+                (test-length (length (.text test+jump-info)))
+
+                (then-info ((ast->info test+jump-info) then))
+                (text-then-info (.text then-info))
+                (then-text (list-tail text-then-info test-length))
+                (then-length (length (text->list then-text)))
+
+                (jump-text (list (lambda (f g t d) (i386:jump 0))))
+                (jump-length (length (text->list jump-text)))
+                (test+then+jump-info
+                 (clone then-info
+                        #:text (append (.text then-info) jump-text)))
+
+                (else-info ((ast->info test+then+jump-info) else))
+                (text-else-info (.text else-info))
+                (else-text (list-tail text-else-info (length (.text test+then+jump-info))))
+                (else-length (length (text->list else-text)))
+
+                (text+test-text (.text (test-jump->info (+ then-length jump-length))))
+                (test-text (list-tail text+test-text text-length))
+                (jump-text (list (lambda (f g t d) (i386:jump else-length)))))
+
+           (clone info #:text
+                  (append text
+                          test-text
+                          then-text
+                          jump-text
+                          else-text)
+                  #:globals (.globals else-info))))
+
         ((for ,init ,test ,step ,body)
          (let* ((jump (pmatch test
                         ((lt ,a ,b) i386:jump-c)

scaffold/t.c

@@ -156,6 +156,12 @@ test (char *p)
   puts ("t: if (--i)\n");
   if (--i) return 1;
 
+  puts ("t: (one == 1) ?");
+  (one == 1) ? 1 : exit (1);
+
+  puts ("t: (f) ?");
+  (f) ? exit (1) : 1;
+
   puts ("t: if (1)\n");
   if (1) goto ok0;
   return 1;