Compiler support for tagged parametrized members.

git-svn-id: https://asn1c.svn.sourceforge.net/svnroot/asn1c/trunk@894 59561ff5-6e30-0410-9f3c-9617f08c8826

2 files changed, 41 insertions, 0 deletions

diff --git a/libasn1parser/asn1p_expr.c b/libasn1parser/asn1p_expr.c
index c3c31f2c..5e2aa34e 100644
--- a/libasn1parser/asn1p_expr.c
+++ b/libasn1parser/asn1p_expr.c
@@ -142,3 +142,41 @@ asn1p_expr_free(asn1p_expr_t *expr) {
 	}
 }
 
+
+char *asn1p_tag2string(struct asn1p_type_tag_s *tag, char *buf) {
+	static buf_stat[TAG2STRING_BUFFER_SIZE];
+	char *start;
+	char *end;
+
+	if(!buf) buf = buf_stat;
+	start = buf;
+	end = buf + TAG2STRING_BUFFER_SIZE;
+
+	if(tag->tag_class == TC_NOCLASS) {
+		*buf = 0;
+		return buf;
+	}
+
+	strcpy(buf, "[");
+	switch(tag->tag_class) {
+	case TC_NOCLASS:
+		assert(tag->tag_class != TC_NOCLASS);
+		break;
+	case TC_UNIVERSAL:	strcat(buf, "UNIVERSAL ");	break;
+	case TC_PRIVATE:	strcat(buf, "PRIVATE ");	break;
+	case TC_APPLICATION:	strcat(buf, "APPLICATION ");	break;
+	case TC_CONTEXT_SPECIFIC:
+		break;
+	}
+	buf += snprintf(buf + strlen(buf), end - buf,
+		"%" PRIdASN "]", tag->tag_value);
+	assert((buf - end) > sizeof(" IMPLICIT "));
+
+	switch(tag->tag_mode) {
+	case TM_DEFAULT: break;
+	case TM_IMPLICIT: strcat(buf, " IMPLICIT"); break;
+	case TM_EXPLICIT: strcat(buf, " EXPLICIT"); break;
+	}
+
+	return start;
+}
diff --git a/libasn1parser/asn1p_expr.h b/libasn1parser/asn1p_expr.h
index 34a9e7aa..18692c17 100644
--- a/libasn1parser/asn1p_expr.h
+++ b/libasn1parser/asn1p_expr.h
@@ -242,4 +242,7 @@ asn1p_expr_t *asn1p_expr_clone(asn1p_expr_t *, int skip_extensions);
 void asn1p_expr_add(asn1p_expr_t *to, asn1p_expr_t *what);
 void asn1p_expr_free(asn1p_expr_t *expr);
 
+#define	TAG2STRING_BUFFER_SIZE	64	/* buf should be at least this big */
+char *asn1p_tag2string(struct asn1p_type_tag_s *tag, char *opt_buf);
+
 #endif	/* ASN1_PARSER_EXPR_H */