Added flags to language specifiction. Added optional expect string to language specification. Added some exaple grammars for testing and demos

2014-01-26 11:25:50 +00:00
parent 8931782986
commit d5e2bdf977
17 changed files with 942 additions and 269 deletions
--- a/examples/doge.c
+++ b/examples/doge.c
@@ -0,0 +1,47 @@
+#include "../mpc.h"
+
+int main(int argc, char **argv) {
+  
+  mpc_parser_t* Adjective = mpc_new("adjective");
+  mpc_parser_t* Noun      = mpc_new("noun");
+  mpc_parser_t* Phrase    = mpc_new("phrase");
+  mpc_parser_t* Doge      = mpc_new("doge");
+
+  mpca_lang(MPC_LANG_DEFAULT,
+    "                                                                     \
+      adjective : \"wow\" | \"many\" | \"so\" | \"such\";                 \
+      noun      : \"lisp\" | \"language\" | \"c\" | \"book\" | \"build\"; \
+      phrase    : <adjective> <noun>;                                     \
+      doge      : /^/ <phrase>* /$/;                                      \
+    ",
+    Adjective, Noun, Phrase, Doge);
+
+  if (argc > 1) {
+    
+    mpc_result_t r;
+    if (mpc_parse_contents(argv[1], Doge, &r)) {
+      mpc_ast_print(r.output);
+      mpc_ast_delete(r.output);
+    } else {
+      mpc_err_print(r.error);
+      mpc_err_delete(r.error);
+    }
+    
+  } else {
+
+    mpc_result_t r;
+    if (mpc_parse_pipe("<stdin>", stdin, Doge, &r)) {
+      mpc_ast_print(r.output);
+      mpc_ast_delete(r.output);
+    } else {
+      mpc_err_print(r.error);
+      mpc_err_delete(r.error);
+    }
+  
+  }
+
+  mpc_cleanup(4, Adjective, Noun, Phrase, Doge);
+  
+  return 0;
+  
+}