almost complete tree to string translator

1 files changed, 110 insertions, 0 deletions

diff --git a/decoder/t2s_test.cc b/decoder/t2s_test.cc
new file mode 100644
index 00000000..3c46ea89
--- /dev/null
+++ b/decoder/t2s_test.cc
@@ -0,0 +1,110 @@
+#include "tree_fragment.h"
+
+#define BOOST_TEST_MODULE T2STest
+#include <boost/test/unit_test.hpp>
+#include <boost/test/floating_point_comparison.hpp>
+#include <iostream>
+#include "tdict.h"
+
+using namespace std;
+
+BOOST_AUTO_TEST_CASE(TestTreeFragments) {
+  cdec::TreeFragment tree("(S (NP (DT the) (NN boy)) (VP (V saw) (NP (DT a) (NN cat))))");
+  cdec::TreeFragment tree2("(S (NP (DT a) (NN cat)) (VP (V ate) (NP (DT the) (NN cake pie))))");
+  vector<unsigned> a, b;
+  vector<WordID> aw, bw;
+  cerr << "TREE1: " << tree << endl;
+  cerr << "TREE2: " << tree2 << endl;
+  for (auto& sym : tree)
+    if (cdec::IsTerminal(sym)) aw.push_back(sym); else a.push_back(sym);
+  for (auto& sym : tree2)
+    if (cdec::IsTerminal(sym)) bw.push_back(sym); else b.push_back(sym);
+  BOOST_CHECK_EQUAL(a.size(), b.size());
+  BOOST_CHECK_EQUAL(aw.size() + 1, bw.size());
+  BOOST_CHECK_EQUAL(aw.size(), 5);
+  BOOST_CHECK_EQUAL(TD::GetString(aw), "the boy saw a cat");
+  BOOST_CHECK_EQUAL(TD::GetString(bw), "a cat ate the cake pie");
+  if (a != b) {
+    BOOST_CHECK_EQUAL(1,2);
+  }
+
+  string nts;
+  for (cdec::TreeFragment::iterator it = tree.begin(); it != tree.end(); ++it) {
+    if (cdec::IsNT(*it)) {
+      if (cdec::IsRHS(*it)) it.truncate();
+      if (nts.size()) nts += " ";
+      if (cdec::IsLHS(*it)) nts += "(";
+      nts += TD::Convert(*it & cdec::ALL_MASK);
+      if (cdec::IsFrontier(*it)) nts += "*";
+    }
+  }
+  BOOST_CHECK_EQUAL(nts, "(S NP* VP*");
+
+  nts.clear();
+  int ntc = 0;
+  for (cdec::TreeFragment::iterator it = tree.begin(); it != tree.end(); ++it) {
+    if (cdec::IsNT(*it)) {
+      if (cdec::IsRHS(*it)) {
+        ++ntc;
+        if (ntc > 1) it.truncate();
+      }
+      if (nts.size()) nts += " ";
+      if (cdec::IsLHS(*it)) nts += "(";
+      nts += TD::Convert(*it & cdec::ALL_MASK);
+      if (cdec::IsFrontier(*it)) nts += "*";
+    }
+  }
+  BOOST_CHECK_EQUAL(nts, "(S NP VP* (NP DT* NN*");
+}
+
+BOOST_AUTO_TEST_CASE(TestSharing) {
+  cdec::TreeFragment rule1("(S [NP] [VP])", true);
+  cdec::TreeFragment rule2("(S [NP] (VP [V] [NP]))", true);
+  string r1,r2;
+  for (auto sym : rule1) {
+    if (r1.size()) r1 += " ";
+    if (cdec::IsLHS(sym)) r1 += "(";
+    r1 += TD::Convert(sym & cdec::ALL_MASK);
+    if (cdec::IsFrontier(sym)) r1 += "*";
+  }
+  for (auto sym : rule2) {
+    if (r2.size()) r2 += " ";
+    if (cdec::IsLHS(sym)) r2 += "(";
+    r2 += TD::Convert(sym & cdec::ALL_MASK);
+    if (cdec::IsFrontier(sym)) r2 += "*";
+  }
+  cerr << rule1 << endl;
+  cerr << r1 << endl;
+  cerr << rule2 << endl;
+  cerr << r2 << endl;
+  BOOST_CHECK_EQUAL(r1, "(S NP* VP*");
+  BOOST_CHECK_EQUAL(r2, "(S NP* VP (VP V* NP*");
+}
+
+BOOST_AUTO_TEST_CASE(TestEndInvariants) {
+  cdec::TreeFragment tree("(S (NP (DT the) (NN boy)) (VP (V saw) (NP (DT a) (NN cat))))");
+  BOOST_CHECK(tree.end().at_end());
+  BOOST_CHECK(!tree.begin().at_end());
+}
+
+BOOST_AUTO_TEST_CASE(TestBegins) {
+  cdec::TreeFragment tree("(S (NP (DT the) (NN boy)) (VP (V saw) (NP (DT a) (NN cat))))");
+  for (auto it = tree.begin(1); it != tree.end(); ++it) {
+    cerr << TD::Convert(*it & cdec::ALL_MASK) << endl;
+  }
+}
+
+BOOST_AUTO_TEST_CASE(TestRemainder) {
+  cdec::TreeFragment tree("(S (A a) (B b))");
+  auto it = tree.begin();
+  ++it;
+  BOOST_CHECK(cdec::IsRHS(*it));
+  cerr << tree << endl;
+  auto itr = it.remainder();
+  while(itr != tree.end()) {
+    cerr << TD::Convert(*itr & cdec::ALL_MASK) << endl;
+    ++itr;
+  }
+}
+
+