metadata: Support empty structures

[babeltrace.git] / formats / ctf / metadata / ctf-parser.y

diff --git a/formats/ctf/metadata/ctf-parser.y b/formats/ctf/metadata/ctf-parser.y
index 437242bd52657798647005180427a1d9dd18d6a8..1f4aa9e4bc98fc70b7484f0d74a6594551f98801 100644 (file)
--- a/formats/ctf/metadata/ctf-parser.y
+++ b/formats/ctf/metadata/ctf-parser.y
@@ -1010,7 +1010,6 @@ postfix_expression:
                        $$->u.unary_expression.type = UNARY_STRING;
                        $$->u.unary_expression.u.string = yylval.gs->s;
                }
-
        |       DECIMAL_CONSTANT
                {
                        $$ = make_node(scanner, NODE_UNARY_EXPRESSION);
@@ -1447,7 +1446,7 @@ struct_type_specifier:
                {
                        $$ = make_node(scanner, NODE_STRUCT);
                        $$->u._struct.has_body = 1;
-                       if (set_parent_node($2, $$))
+                       if ($2 && set_parent_node($2, $$))
                                reparent_error(scanner, "struct reparent error");
                }
        |       IDENTIFIER struct_declaration_begin struct_or_variant_declaration_list struct_declaration_end
@@ -1455,7 +1454,7 @@ struct_type_specifier:
                        $$ = make_node(scanner, NODE_STRUCT);
                        $$->u._struct.has_body = 1;
                        $$->u._struct.name = $1->s;
-                       if (set_parent_node($3, $$))
+                       if ($3 && set_parent_node($3, $$))
                                reparent_error(scanner, "struct reparent error");
                }
        |       ID_TYPE struct_declaration_begin struct_or_variant_declaration_list struct_declaration_end
@@ -1463,7 +1462,7 @@ struct_type_specifier:
                        $$ = make_node(scanner, NODE_STRUCT);
                        $$->u._struct.has_body = 1;
                        $$->u._struct.name = $1->s;
-                       if (set_parent_node($3, $$))
+                       if ($3 && set_parent_node($3, $$))
                                reparent_error(scanner, "struct reparent error");
                }
        |       IDENTIFIER
@@ -1495,7 +1494,7 @@ variant_type_specifier:
                {
                        $$ = make_node(scanner, NODE_VARIANT);
                        $$->u.variant.has_body = 1;
-                       if (set_parent_node($2, $$))
+                       if ($2 && set_parent_node($2, $$))
                                reparent_error(scanner, "variant reparent error");
                }
        |       LT IDENTIFIER GT variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
@@ -1503,7 +1502,7 @@ variant_type_specifier:
                        $$ = make_node(scanner, NODE_VARIANT);
                        $$->u.variant.has_body = 1;
                        $$->u.variant.choice = $2->s;
-                       if (set_parent_node($5, $$))
+                       if ($5 && set_parent_node($5, $$))
                                reparent_error(scanner, "variant reparent error");
                }
        |       LT ID_TYPE GT variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
@@ -1511,7 +1510,7 @@ variant_type_specifier:
                        $$ = make_node(scanner, NODE_VARIANT);
                        $$->u.variant.has_body = 1;
                        $$->u.variant.choice = $2->s;
-                       if (set_parent_node($5, $$))
+                       if ($5 && set_parent_node($5, $$))
                                reparent_error(scanner, "variant reparent error");
                }
        |       IDENTIFIER variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
@@ -1519,7 +1518,7 @@ variant_type_specifier:
                        $$ = make_node(scanner, NODE_VARIANT);
                        $$->u.variant.has_body = 1;
                        $$->u.variant.name = $1->s;
-                       if (set_parent_node($3, $$))
+                       if ($3 && set_parent_node($3, $$))
                                reparent_error(scanner, "variant reparent error");
                }
        |       IDENTIFIER LT IDENTIFIER GT variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
@@ -1528,7 +1527,7 @@ variant_type_specifier:
                        $$->u.variant.has_body = 1;
                        $$->u.variant.name = $1->s;
                        $$->u.variant.choice = $3->s;
-                       if (set_parent_node($6, $$))
+                       if ($6 && set_parent_node($6, $$))
                                reparent_error(scanner, "variant reparent error");
                }
        |       IDENTIFIER LT IDENTIFIER GT
@@ -1544,7 +1543,7 @@ variant_type_specifier:
                        $$->u.variant.has_body = 1;
                        $$->u.variant.name = $1->s;
                        $$->u.variant.choice = $3->s;
-                       if (set_parent_node($6, $$))
+                       if ($6 && set_parent_node($6, $$))
                                reparent_error(scanner, "variant reparent error");
                }
        |       IDENTIFIER LT ID_TYPE GT
@@ -1559,7 +1558,7 @@ variant_type_specifier:
                        $$ = make_node(scanner, NODE_VARIANT);
                        $$->u.variant.has_body = 1;
                        $$->u.variant.name = $1->s;
-                       if (set_parent_node($3, $$))
+                       if ($3 && set_parent_node($3, $$))
                                reparent_error(scanner, "variant reparent error");
                }
        |       ID_TYPE LT IDENTIFIER GT variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
@@ -1568,7 +1567,7 @@ variant_type_specifier:
                        $$->u.variant.has_body = 1;
                        $$->u.variant.name = $1->s;
                        $$->u.variant.choice = $3->s;
-                       if (set_parent_node($6, $$))
+                       if ($6 && set_parent_node($6, $$))
                                reparent_error(scanner, "variant reparent error");
                }
        |       ID_TYPE LT IDENTIFIER GT
@@ -1584,7 +1583,7 @@ variant_type_specifier:
                        $$->u.variant.has_body = 1;
                        $$->u.variant.name = $1->s;
                        $$->u.variant.choice = $3->s;
-                       if (set_parent_node($6, $$))
+                       if ($6 && set_parent_node($6, $$))
                                reparent_error(scanner, "variant reparent error");
                }
        |       ID_TYPE LT ID_TYPE GT