Initial commit

Includes: runtime base from a previous project, syn(tax) module with
parser and lexer

Signed-off-by: Alek Ratzloff <alekratz@gmail.com>

build.rs

@@ -0,0 +1,19 @@
+use cfgrammar::yacc::YaccKind;
+use lrlex::LexerBuilder;
+use lrpar::CTParserBuilder;
+
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let mut parser_builder = CTParserBuilder::new()
+        .yacckind(YaccKind::Grmtools)
+        .error_on_conflicts(false);
+    let lex_rule_ids_map = parser_builder
+        .process_file_in_src("syn/parser.y")?;
+    if let Some((grm, _, _, conflicts)) = parser_builder.conflicts() {
+        eprintln!("{}", conflicts.pp(grm));
+        return Err("conflicts in parser".into());
+    }
+    LexerBuilder::new()
+        .rule_ids_map(lex_rule_ids_map)
+        .process_file_in_src("syn/lexer.l")?;
+    Ok(())
+}