1 files changed, 89 insertions, 0 deletions
diff --git a/engines/glk/archetype/parser.h b/engines/glk/archetype/parser.h
new file mode 100644
index 0000000000..c5185b0f35
--- /dev/null
+++ b/engines/glk/archetype/parser.h
@@ -0,0 +1,89 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef ARCHETYPE_PARSER
+#define ARCHETYPE_PARSER
+
+#include "glk/archetype/string.h"
+
+namespace Glk {
+namespace Archetype {
+
+enum TargetListType { PARSER_VERBLIST, PARSER_NOUNLIST };
+
+/**
+ * Given a string, creates a string with one and only one space between each word
+ * @param first			the string to be normalized
+ * @param second		the normalized string
+ */
+extern void normalize_string(const String &first, String &second);
+
+/**
+ * Adds another word to one of the lists to match.  If the given word has vertical bars in it,
+ * the bars are considered delimiters and each delimited word is added to the available list
+ */
+extern void add_parse_word(TargetListType which_list, String &the_word, int the_object);
+
+/**
+ * Parses the previously given sentence into a string of object references.
+ * The verbpreps list is searched first, followed by the nounphrases list.
+ * It does not identify any parts of speech; it is strictly substitutional.
+ *
+ * Also removes all instances of the words "a", "an", "the".
+ *
+ * NOTES:
+ * When an object is matched, its name is replaced by the sequence
+ * <percent sign><high byte><low byte><caret>.  The percent will
+ * indicate the beginning of the encoded number; the caret indicates
+ * the end and also serves the purpose of keeping the trim() procedure
+ * from trimming off objects 9 or 13 or the like.
+ *
+ * Objects are matched as words; they must be surrounded by spaces.
+ * When they are replaced in the Command string, they leave the spaces
+ * on both sides so as not to interfere with further matching
+ */
+extern void parse_sentence();
+
+/**
+ * Pops the first object number off of the parsed Command string and sends the number back.
+ * If Command does not begin with an object marker, sends back the unparseable string.
+ * @param intback		will be -1 if there was no object; otherwise, the number of the object.
+ * @param strback		will contain the (trimmed) unparseable chunk if intback is -1; unchanged otherwise
+ * @returns				true if there was anything to be popped; false otherwise
+ */
+extern bool pop_object(int &intback, String &strback);
+
+/**
+ * Performs a subset of the normal parse_sentence algorithm.  Given a single string,
+ * find the number of the first object that matches.
+ */
+extern int find_object(const String &s);
+
+/**
+ * Called in order to force a full deletion of the parse lists, in order that new ones may be built up
+ */
+extern void new_parse_list();
+
+} // End of namespace Archetype
+} // End of namespace Glk
+
+#endif