Generate items from grammar

1 files changed, 83 insertions, 0 deletions

diff --git a/src/solar.cpp b/src/solar.cpp
new file mode 100644
index 0000000..a5085a1
--- /dev/null
+++ b/src/solar.cpp
@@ -0,0 +1,83 @@
+/*
+  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.
+*/
+
+
+#include "lex.hpp"
+#include "parser.hpp"
+
+#include <cstdio>
+#include <memory>
+
+
+namespace solar {
+
+bool read_grammar(const char *filename, state_t *state) {
+	FILE *file = fopen(filename, "r");
+	if (!file) {
+		std::fprintf(stderr, "unable to open file %s\n", filename);
+		return false;
+	}
+
+	std::unique_ptr<lex_t> lexer(new lex_t(file));
+	parser_t *parser = parser_alloc();
+	int ret;
+
+	do {
+		int token;
+		value_t value;
+
+		token = lexer->lex(&value);
+		if (token < 0) {
+			std::fprintf(stderr, "error: %s at %s:%i:%i\n", value.error, filename,
+				     lexer->get_location().first_line, lexer->get_location().first_column);
+			return false;
+		}
+
+		ret = parser_push(parser, token, &value, state);
+	} while (ret > 0);
+
+	if (ret < 0) {
+		std::fprintf(stderr, "error: parse error at %s:%i:%i\n", filename,
+			     lexer->get_location().first_line, lexer->get_location().first_column);
+		return false;
+	}
+
+	parser_free(parser);
+
+	return true;
+}
+
+}
+
+
+int main() {
+	using namespace solar;
+
+	state_t state;
+	if (!read_grammar("grammar.y", &state))
+		return 1;
+
+	return 0;
+}