parse trule(string) using lexer - needs testing, affects earley_composer

git-svn-id: https://ws10smt.googlecode.com/svn/trunk@497 ec762483-ff6d-05da-a07a-a48fb63a330f

1 files changed, 36 insertions, 0 deletions

diff --git a/decoder/cfg_format.h b/decoder/cfg_format.h
new file mode 100755
index 00000000..1bce3d06
--- /dev/null
+++ b/decoder/cfg_format.h
@@ -0,0 +1,36 @@
+#ifndef CFG_FORMAT_H
+#define CFG_FORMAT_H
+
+#include <program_options.h>
+#include <string>
+
+struct CFGFormat {
+  bool identity_scfg;bool features;bool logprob_feat;bool cfg_comma_nt;std::string goal_nt_name;std::string nt_prefix;
+  template <class Opts> // template to support both printable_opts and boost nonprintable
+  void AddOptions(Opts *opts) {
+    using namespace boost::program_options;
+    using namespace std;
+    opts->add_options()
+      ("identity_scfg",defaulted_value(&identity_scfg),"output an identity SCFG: add an identity target side - '[X12] ||| [X13,1] a ||| [1] a ||| feat= ...' - the redundant target '[1] a |||' is omitted otherwise.")
+      ("features",defaulted_value(&features),"print the CFG feature vector")
+      ("logprob_feat",defaulted_value(&logprob_feat),"print a LogProb=-1.5 feature irrespective of --features.")
+      ("cfg_comma_nt",defaulted_value(&cfg_comma_nt),"if false, omit the usual [NP,1] ',1' variable index in the source side")
+      ("goal_nt_name",defaulted_value(&goal_nt_name),"if nonempty, the first production will be '[goal_nt_name] ||| [x123] ||| LogProb=y' where x123 is the actual goal nt, and y is the pushed prob, if any")
+      ("nt_prefix",defaulted_value(&nt_prefix),"NTs are [<nt_prefix>123] where 123 is the node number starting at 0, and the highest node (last in file) is the goal node in an acyclic hypergraph")
+      ;
+  }
+  void set_defaults() {
+    identity_scfg=false;
+    features=true;
+    logprob_feat=true;
+    cfg_comma_nt=true;
+    goal_nt_name="S";
+    nt_prefix="";
+  }
+  CFGFormat() {
+    set_defaults();
+  }
+};
+
+
+#endif