fix two front-end issues

src/ast.c

@@ -663,15 +663,15 @@ static value_t julia_to_scm(fl_context_t *fl_ctx, jl_value_t *v)
         temp = julia_to_scm_(fl_ctx, v);
     }
     FL_CATCH_EXTERN(fl_ctx) {
-        temp = fl_list2(fl_ctx, jl_ast_ctx(fl_ctx)->error_sym, cvalue_static_cstring(fl_ctx, "expression too large"));
+        temp = fl_ctx->lasterror;
     }
     return temp;
 }
 
 static void array_to_list(fl_context_t *fl_ctx, jl_array_t *a, value_t *pv)
 {
     if (jl_array_len(a) > 300000)
-        lerror(fl_ctx, fl_ctx->OutOfMemoryError, "expression too large");
+        lerror(fl_ctx, symbol(fl_ctx, "error"), "expression too large");
     value_t temp;
     for(long i=jl_array_len(a)-1; i >= 0; i--) {
         *pv = fl_cons(fl_ctx, fl_ctx->NIL, *pv);
@@ -694,7 +694,7 @@ static value_t julia_to_list2(fl_context_t *fl_ctx, jl_value_t *a, jl_value_t *b
 static value_t julia_to_scm_(fl_context_t *fl_ctx, jl_value_t *v)
 {
     if (v == NULL)
-        jl_error("undefined reference in AST");
+        lerror(fl_ctx, symbol(fl_ctx, "error"), "undefined reference in AST");
     if (jl_is_symbol(v))
         return symbol(fl_ctx, jl_symbol_name((jl_sym_t*)v));
     if (v == jl_true)
@@ -749,9 +749,9 @@ static value_t julia_to_scm_(fl_context_t *fl_ctx, jl_value_t *v)
     if (jl_is_long(v) && fits_fixnum(jl_unbox_long(v)))
         return fixnum(jl_unbox_long(v));
     if (jl_is_ssavalue(v))
-        jl_error("SSAValue objects should not occur in an AST");
+        lerror(fl_ctx, symbol(fl_ctx, "error"), "SSAValue objects should not occur in an AST");
     if (jl_is_slot(v))
-        jl_error("Slot objects should not occur in an AST");
+        lerror(fl_ctx, symbol(fl_ctx, "error"), "Slot objects should not occur in an AST");
     value_t opaque = cvalue(fl_ctx, jl_ast_ctx(fl_ctx)->jvtype, sizeof(void*));
     *(jl_value_t**)cv_data((cvalue_t*)ptr(opaque)) = v;
     return opaque;

src/julia-parser.scm

@@ -1020,27 +1020,24 @@
             ((#\( )
              (if (ts:space? s) (disallowed-space ex t))
              (take-token s)
-             (if macrocall?
-                 (let ((args (if (eqv? (require-token s) #\) )
-                                 (begin (take-token s) '())
-                                 (begin0 (with-normal-ops
-                                          (with-whitespace-newline
-                                           (parse-comma-separated s parse-eq* #t)))
-                                         (if (not (eqv? (require-token s) #\) ))
-                                             (error "missing ) in argument list"))
-                                         (take-token s)))))
-                   `(call ,ex ,@args))
-                 (loop (let ((al (parse-arglist s #\) )))
-                         (receive
-                          (params args) (separate (lambda (x)
-                                                    (and (pair? x)
-                                                         (eq? (car x) 'parameters)))
-                                                  al)
-                          (if (eq? (peek-token s) 'do)
-                              (begin
-                                (take-token s)
-                                `(call ,ex ,@params ,(parse-do s) ,@args))
-                              `(call ,ex ,@al)))))))
+             (let ((c (let ((al (parse-arglist s #\) )))
+                        (receive
+                         (params args) (separate (lambda (x)
+                                                   (and (pair? x)
+                                                        (eq? (car x) 'parameters)))
+                                                 al)
+                         (if (eq? (peek-token s) 'do)
+                             (begin
+                               (take-token s)
+                               `(call ,ex ,@params ,(parse-do s) ,@args))
+                             `(call ,ex ,@al))))))
+               (if macrocall?
+                   (map (lambda (x)  ;; parse `a=b` as `=` instead of `kw` in macrocall
+                          (if (and (pair? x) (eq? (car x) 'kw))
+                              `(= ,@(cdr x))
+                              x))
+                        c)
+                   (loop c))))
             ((#\[ )
              (if (ts:space? s) (disallowed-space ex t))
              (take-token s)
@@ -1473,15 +1470,13 @@
         `(,word ,@(reverse path)))))))
 
 ;; parse comma-separated assignments, like "i=1:n,j=1:m,..."
-(define (parse-comma-separated s what (in-parens #f))
+(define (parse-comma-separated s what)
   (let loop ((exprs '()))
     (let ((r (what s)))
       (case (peek-token s)
         ((#\,)
          (take-token s)
-         (if (and in-parens (eqv? (require-token s) #\) ))
-             (reverse! (cons r exprs))
-             (loop (cons r exprs))))
+         (loop (cons r exprs)))
         (else   (reverse! (cons r exprs)))))))
 
 (define (parse-comma-separated-assignments s)

src/julia-syntax.scm

@@ -3559,6 +3559,8 @@ f(x) = yt(x)
                '(null)))
             ((...)
              (error "\"...\" expression outside call"))
+            ((error)
+             (error (cadr e)))
             (else
              (error (string "invalid syntax " (deparse e)))))))
     ;; introduce new slots for assigned arguments

test/parse.jl

@@ -1032,4 +1032,15 @@ macro m20729()
     return ex
 end
 
-@test_throws ErrorException expand(:(@m20729))
+@test_throws ErrorException eval(:(@m20729))
+@test expand(:(@m20729)) == Expr(:error, "undefined reference in AST")
+
+macro err20000()
+    return Expr(:error, "oops!")
+end
+
+@test expand(:(@err20000)) == Expr(:error, "oops!")
+
+# issue #20000
+@test parse("@m(a; b=c)") == Expr(:macrocall, Symbol("@m"),
+                                  Expr(:parameters, Expr(:kw, :b, :c)), :a)