Generate items from grammar

1 files changed, 71 insertions, 0 deletions

diff --git a/src/symbol.hpp b/src/symbol.hpp
new file mode 100644
index 0000000..31b006d
--- /dev/null
+++ b/src/symbol.hpp
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+/*
+  Copyright (c) 2015, Matthias Schiffer <mschiffer@universe-factory.net>
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions are met:
+
+    1. Redistributions of source code must retain the above copyright notice,
+       this list of conditions and the following disclaimer.
+    2. Redistributions in binary form must reproduce the above copyright notice,
+       this list of conditions and the following disclaimer in the documentation
+       and/or other materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+
+#pragma once
+
+#include <string>
+#include <tuple>
+
+
+namespace solar {
+
+enum symbol_type_t {
+	SYMBOL_TYPE_END,
+	SYMBOL_TYPE_NONTERM,
+	SYMBOL_TYPE_TERM,
+	SYMBOL_TYPE_CHAR,
+};
+
+struct symbol_t : public std::tuple<symbol_type_t, std::string>  {
+	symbol_t(symbol_type_t type, const char *value) : std::tuple<symbol_type_t, std::string>(type, value) {}
+
+	symbol_type_t get_type() const {
+		return std::get<0>(*this);
+	}
+
+	const std::string & get_value() const {
+		return std::get<1>(*this);
+	}
+
+	static symbol_t make_end() {
+		return symbol_t(SYMBOL_TYPE_END, "");
+	}
+
+	static symbol_t make_nonterm(const char *value) {
+		return symbol_t(SYMBOL_TYPE_NONTERM, value);
+	}
+
+	static symbol_t make_term(const char *value) {
+		return symbol_t(SYMBOL_TYPE_TERM, value);
+	}
+
+	static symbol_t make_char(unsigned char value) {
+		char v[2] = {char(value), 0};
+		return symbol_t(SYMBOL_TYPE_CHAR, v);
+	}
+};
+
+}