Completely refactor code generation

1 files changed, 85 insertions, 0 deletions

diff --git a/src/output_header.cpp b/src/output_header.cpp
new file mode 100644
index 0000000..a99369c
--- /dev/null
+++ b/src/output_header.cpp
@@ -0,0 +1,85 @@
+/*
+  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 "output_header.hpp"
+
+
+namespace solar {
+
+void output_header_t::emit_tokens() {
+	if (get_tokens().empty())
+		return;
+
+	block_t token(this, "typedef enum ", prefixed("token"));
+
+	for (const auto &token : get_tokens())
+		write_line(token.first.c_str(), " = ", token.second + 256, ",");
+
+	token.close_(" ", prefixed("token_t"));
+}
+
+void output_header_t::emit_token_value() {
+	block_t token_value(this, "typedef struct ", prefixed("token_value"));
+
+	std::map<std::string, std::string> token_values;
+
+	for (const symbol_t &term : get_generator()->get_terminals()) {
+		const auto &type = get_generator()->get_grammar().get_term_type(term);
+		if (!type.first.empty())
+			token_values.insert(std::make_pair(type.second, type.first));
+	}
+
+	for (const auto &value : token_values)
+		write_line_(variable_t({value.second.c_str(), value.first.c_str()}));
+
+	token_value.close_(" ", prefixed("token_value_t"));
+}
+
+void output_header_t::write() {
+	write_line("#pragma once");
+	write_line();
+
+	if (!get_generator()->get_grammar().header_block.empty()) {
+		write_line(get_generator()->get_grammar().header_block);
+		write_line();
+	}
+
+	emit_tokens();
+	write_line();
+
+	emit_token_value();
+	write_line();
+
+	write_line_("typedef struct ", prefixed("context"), " ", prefixed("context_t"));
+	write_line();
+
+	write_line_(sig_alloc());
+	write_line_(sig_free());
+	write_line();
+	write_line_(sig_push());
+}
+
+};