Move to kernel style SPDX license identifiers

[babeltrace.git] / src / plugins / ctf / common / metadata / parser.y

diff --git a/src/plugins/ctf/common/metadata/parser.y b/src/plugins/ctf/common/metadata/parser.y
index ae5a9f981238d4376f2770701fd923c231b7e1bd..bada61d74bfdae66348517fdb85b6eee740187a7 100644 (file)
--- a/src/plugins/ctf/common/metadata/parser.y
+++ b/src/plugins/ctf/common/metadata/parser.y
@@ -1,28 +1,10 @@
 %{
 /*
- * ctf-parser.y
- *
- * Common Trace Format Metadata Grammar.
+ * SPDX-License-Identifier: MIT
  *
  * Copyright 2010 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * Common Trace Format Metadata Grammar.
  */
 
 #define BT_LOG_OUTPUT_LEVEL ctf_plugin_metadata_log_level
@@ -41,16 +23,10 @@
 #include "common/list.h"
 #include "common/assert.h"
 #include "scanner.h"
-#include "parser.h"
 #include "ast.h"
 #include "objstack.h"
 
-#if BT_LOG_ENABLED_TRACE
-# define YYDEBUG 1
-# define YYFPRINTF(_stream, _fmt, args...) BT_LOGT(_fmt, ## args)
-#else
-# define YYDEBUG 0
-#endif
+#include "parser-wrap.h"
 
 /* Join two lists, put "add" at the end of "head".  */
 static inline void
@@ -65,8 +41,6 @@ _bt_list_splice_tail (struct bt_list_head *add, struct bt_list_head *head)
        }
 }
 
-BT_HIDDEN
-int yyparse(struct ctf_scanner *scanner, yyscan_t yyscanner);
 BT_HIDDEN
 int yylex(union YYSTYPE *yyval, yyscan_t yyscanner);
 BT_HIDDEN
@@ -165,7 +139,7 @@ int parse_base_sequence(const char *src, size_t len, size_t pos,
                        return -1;
                }
        }
-       BT_ASSERT(nr_char > 0);
+       BT_ASSERT_DBG(nr_char > 0);
        buffer[nr_char] = '\0';
        *buf_len = nr_char;
        return 0;
@@ -945,19 +919,13 @@ static int set_parent_node(struct ctf_node *node,
        return 0;
 }
 
-BT_HIDDEN
+static
 void yyerror(struct ctf_scanner *scanner, yyscan_t yyscanner, const char *str)
 {
        _BT_LOGE_LINENO(yyget_lineno(scanner->scanner),
                "%s: token=\"%s\"", str, yyget_text(scanner->scanner));
 }
 
-BT_HIDDEN
-int yywrap(void)
-{
-       return 1;
-}
-
 #define reparent_error(scanner, str)                           \
 do {                                                           \
        yyerror(scanner, scanner->scanner, YY_("reparent_error: " str)); \
@@ -1042,8 +1010,37 @@ void ctf_scanner_free(struct ctf_scanner *scanner)
        free(scanner);
 }
 
+/*
+ * The bison-provided version of strlen (yystrlen) generates a benign
+ * -Wnull-dereference warning.  That version is used when building on cygwin,
+ * for example, but you can also enable it by hand (to test) by removing the
+ * preprocessor conditional around it.
+ *
+ * Define yystrlen such that it will always use strlen.  As far as we know,
+ * strlen provided by all the platforms we use is reliable.
+ */
+#define yystrlen strlen
+
 %}
 
+/*
+ * This ends up in parser.h and makes sure those who want to include it pass
+ * through parser-wrap.h.
+ */
+%code requires {
+#ifndef ALLOW_INCLUDE_PARSER_H
+# error "Don't include parser.h directly, include parser-wrap.h instead."
+#endif
+}
+
+%code provides {
+       BT_HIDDEN
+       void setstring(struct ctf_scanner *scanner, YYSTYPE *lvalp, const char *src);
+
+       BT_HIDDEN
+       int import_string(struct ctf_scanner *scanner, YYSTYPE *lvalp, const char *src, char delim);
+}
+
 %define api.pure
        /* %locations */
 %error-verbose
@@ -1305,7 +1302,7 @@ unary_expression:
                                $$->u.unary_expression.type = UNARY_SIGNED_CONSTANT;
                                $$->u.unary_expression.u.signed_constant =
                                        -($$->u.unary_expression.u.unsigned_constant);
-                       } else if ($$->u.unary_expression.type == UNARY_UNSIGNED_CONSTANT) {
+                       } else if ($$->u.unary_expression.type == UNARY_SIGNED_CONSTANT) {
                                $$->u.unary_expression.u.signed_constant =
                                        -($$->u.unary_expression.u.signed_constant);
                        } else {