migration to cmake

22 files changed, 209 insertions, 203 deletions

diff --git a/decoder/CMakeLists.txt b/decoder/CMakeLists.txt
new file mode 100644
index 00000000..591ab7b3
--- /dev/null
+++ b/decoder/CMakeLists.txt
@@ -0,0 +1,179 @@
+INCLUDE_DIRECTORIES(${CMAKE_CURRENT_SOURCE_DIR}/../utils)
+INCLUDE_DIRECTORIES(${CMAKE_CURRENT_SOURCE_DIR}/../mteval)
+INCLUDE_DIRECTORIES(${CMAKE_CURRENT_SOURCE_DIR}/../klm)
+INCLUDE_DIRECTORIES(${CMAKE_CURRENT_SOURCE_DIR}/..)
+
+PROJECT(decoder C CXX)
+
+find_package(FLEX REQUIRED)
+
+FLEX_TARGET(RuleLexer rule_lexer.ll ${CMAKE_CURRENT_BINARY_DIR}/rule_lexer.cc)
+
+set(libcdec_SRCS
+    aligner.h
+    apply_models.h
+    bottom_up_parser.h
+    bottom_up_parser-rs.h
+    csplit.h
+    decoder.h
+    earley_composer.h
+    factored_lexicon_helper.h
+    ff.h
+    ff_basic.h
+    ff_bleu.h
+    ff_charset.h
+    ff_conll.h
+    ff_const_reorder_common.h
+    ff_const_reorder.h
+    ff_context.h
+    ff_csplit.h
+    ff_external.h
+    ff_factory.h
+    ff_klm.h
+    ff_lexical.h
+    ff_lm.h
+    ff_ngrams.h
+    ff_parse_match.h
+    ff_register.h
+    ff_rules.h
+    ff_ruleshape.h
+    ff_sample_fsa.h
+    ff_soft_syn.h
+    ff_soft_syntax.h
+    ff_soft_syntax_mindist.h
+    ff_source_path.h
+    ff_source_syntax.h
+    ff_source_syntax2.h
+    ff_spans.h
+    ff_tagger.h
+    ff_wordalign.h
+    ff_wordset.h
+    ffset.h
+    forest_writer.h
+    freqdict.h
+    grammar.h
+    hg.h
+    hg_intersect.h
+    hg_io.h
+    hg_remove_eps.h
+    hg_sampler.h
+    hg_test.h
+    hg_union.h
+    incremental.h
+    inside_outside.h
+    kbest.h
+    lattice.h
+    lexalign.h
+    lextrans.h
+    nt_span.h
+    oracle_bleu.h
+    phrasebased_translator.h
+    phrasetable_fst.h
+    program_options.h
+    rule_lexer.h
+    sentence_metadata.h
+    sentences.h
+    tagger.h
+    translator.h
+    trule.h
+    viterbi.h
+    aligner.cc
+    apply_models.cc
+    bottom_up_parser.cc
+    bottom_up_parser-rs.cc
+    cdec_ff.cc
+    csplit.cc
+    decoder.cc
+    earley_composer.cc
+    factored_lexicon_helper.cc
+    ff.cc
+    ff_basic.cc
+    ff_bleu.cc
+    ff_charset.cc
+    ff_conll.cc
+    ff_context.cc
+    ff_const_reorder.cc
+    ff_csplit.cc
+    ff_external.cc
+    ff_factory.cc
+    ff_klm.cc
+    ff_lm.cc
+    ff_ngrams.cc
+    ff_parse_match.cc
+    ff_rules.cc
+    ff_ruleshape.cc
+    ff_soft_syn.cc
+    ff_soft_syntax.cc
+    ff_soft_syntax_mindist.cc
+    ff_source_path.cc
+    ff_source_syntax.cc
+    ff_source_syntax2.cc
+    ff_spans.cc
+    ff_tagger.cc
+    ff_wordalign.cc
+    ff_wordset.cc
+    ffset.cc
+    forest_writer.cc
+    fst_translator.cc
+    tree2string_translator.cc
+    grammar.cc
+    hg.cc
+    hg_intersect.cc
+    hg_io.cc
+    hg_remove_eps.cc
+    hg_sampler.cc
+    hg_union.cc
+    incremental.cc
+    lattice.cc
+    lexalign.cc
+    lextrans.cc
+    node_state_hash.h
+    tree_fragment.cc
+    tree_fragment.h
+    maxtrans_blunsom.cc
+    phrasebased_translator.cc
+    phrasetable_fst.cc
+    rescore_translator.cc
+    ${FLEX_RuleLexer_OUTPUTS}
+    scfg_translator.cc
+    tagger.cc
+    translator.cc
+    trule.cc
+    viterbi.cc)
+
+add_library(libcdec STATIC ${libcdec_SRCS})
+
+set(cdec_SRCS cdec.cc)
+add_executable(cdec ${cdec_SRCS})
+target_link_libraries(cdec libcdec mteval utils ksearch klm klm_util klm_util_double ${Boost_LIBRARIES} ${ZLIB_LIBRARIES})
+
+set(TEST_SRCS
+  grammar_test.cc
+  hg_test.cc
+  parser_test.cc
+  t2s_test.cc
+  trule_test.cc)
+
+foreach(testSrc ${TEST_SRCS})
+  #Extract the filename without an extension (NAME_WE)
+  get_filename_component(testName ${testSrc} NAME_WE)
+
+  #Add compile target
+  set_source_files_properties(${testSrc} PROPERTIES COMPILE_FLAGS "-DBOOST_TEST_DYN_LINK -DTEST_DATA=\\\"test_data/\\\"")
+  add_executable(${testName} ${testSrc})
+
+  #link to Boost libraries AND your targets and dependencies
+  target_link_libraries(${testName} libcdec mteval utils ksearch klm klm_util klm_util_double ${Boost_LIBRARIES} ${ZLIB_LIBRARIES})
+
+  #I like to move testing binaries into a testBin directory
+  set_target_properties(${testName} PROPERTIES 
+      RUNTIME_OUTPUT_DIRECTORY  ${CMAKE_CURRENT_SOURCE_DIR})
+
+  #Finally add it to test execution - 
+  #Notice the WORKING_DIRECTORY and COMMAND
+  add_test(NAME ${testName} COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/${testName} 
+     WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
+endforeach(testSrc)
+
+
+
diff --git a/decoder/Makefile.am b/decoder/Makefile.am
deleted file mode 100644
index dbec532e..00000000
--- a/decoder/Makefile.am
+++ /dev/null
@@ -1,166 +0,0 @@
-bin_PROGRAMS = cdec
-
-noinst_PROGRAMS = \
-  trule_test \
-  hg_test \
-  parser_test \
-  t2s_test \
-  grammar_test
-
-TESTS = trule_test parser_test grammar_test hg_test
-t2s_test_SOURCES = t2s_test.cc
-t2s_test_LDADD = $(BOOST_UNIT_TEST_FRAMEWORK_LDFLAGS) $(BOOST_UNIT_TEST_FRAMEWORK_LIBS) libcdec.a ../mteval/libmteval.a ../utils/libutils.a
-parser_test_SOURCES = parser_test.cc
-parser_test_LDADD = $(BOOST_UNIT_TEST_FRAMEWORK_LDFLAGS) $(BOOST_UNIT_TEST_FRAMEWORK_LIBS) libcdec.a ../mteval/libmteval.a ../utils/libutils.a
-grammar_test_SOURCES = grammar_test.cc
-grammar_test_LDADD = $(BOOST_UNIT_TEST_FRAMEWORK_LDFLAGS) $(BOOST_UNIT_TEST_FRAMEWORK_LIBS) libcdec.a ../mteval/libmteval.a ../utils/libutils.a
-hg_test_SOURCES = hg_test.cc
-hg_test_LDADD = $(BOOST_UNIT_TEST_FRAMEWORK_LDFLAGS) $(BOOST_UNIT_TEST_FRAMEWORK_LIBS) libcdec.a ../mteval/libmteval.a ../utils/libutils.a
-trule_test_SOURCES = trule_test.cc
-trule_test_LDADD = $(BOOST_UNIT_TEST_FRAMEWORK_LDFLAGS) $(BOOST_UNIT_TEST_FRAMEWORK_LIBS) libcdec.a ../mteval/libmteval.a ../utils/libutils.a
-
-cdec_SOURCES = cdec.cc
-cdec_LDFLAGS= -rdynamic $(STATIC_FLAGS)
-cdec_LDADD = libcdec.a ../mteval/libmteval.a ../utils/libutils.a ../klm/search/libksearch.a ../klm/lm/libklm.a ../klm/util/libklm_util.a ../klm/util/double-conversion/libklm_util_double.a
-
-AM_CPPFLAGS = -DTEST_DATA=\"$(top_srcdir)/decoder/test_data\" -DBOOST_TEST_DYN_LINK -W -Wno-sign-compare -I$(top_srcdir) -I$(top_srcdir)/mteval -I$(top_srcdir)/utils -I$(top_srcdir)/klm
-
-rule_lexer.cc: rule_lexer.ll
-	$(LEX) -s -CF -8 -o$@ $<
-
-noinst_LIBRARIES = libcdec.a
-
-EXTRA_DIST = test_data rule_lexer.ll
-
-libcdec_a_SOURCES = \
-  aligner.h \
-  apply_models.h \
-  bottom_up_parser.h \
-  bottom_up_parser-rs.h \
-  csplit.h \
-  decoder.h \
-  earley_composer.h \
-  factored_lexicon_helper.h \
-  ff.h \
-  ff_basic.h \
-  ff_bleu.h \
-  ff_charset.h \
-  ff_conll.h \
-  ff_const_reorder_common.h \
-  ff_const_reorder.h \
-  ff_context.h \
-  ff_csplit.h \
-  ff_external.h \
-  ff_factory.h \
-  ff_klm.h \
-  ff_lexical.h \
-  ff_lm.h \
-  ff_ngrams.h \
-  ff_parse_match.h \
-  ff_register.h \
-  ff_rules.h \
-  ff_ruleshape.h \
-  ff_sample_fsa.h \
-  ff_soft_syn.h \
-  ff_soft_syntax.h \
-  ff_soft_syntax_mindist.h \
-  ff_source_path.h \
-  ff_source_syntax.h \
-  ff_source_syntax2.h \
-  ff_spans.h \
-  ff_tagger.h \
-  ff_wordalign.h \
-  ff_wordset.h \
-  ffset.h \
-  forest_writer.h \
-  freqdict.h \
-  grammar.h \
-  hg.h \
-  hg_intersect.h \
-  hg_io.h \
-  hg_remove_eps.h \
-  hg_sampler.h \
-  hg_test.h \
-  hg_union.h \
-  incremental.h \
-  inside_outside.h \
-  kbest.h \
-  lattice.h \
-  lexalign.h \
-  lextrans.h \
-  nt_span.h \
-  oracle_bleu.h \
-  phrasebased_translator.h \
-  phrasetable_fst.h \
-  program_options.h \
-  rule_lexer.h \
-  sentence_metadata.h \
-  sentences.h \
-  tagger.h \
-  translator.h \
-  trule.h \
-  viterbi.h \
-  aligner.cc \
-  apply_models.cc \
-  bottom_up_parser.cc \
-  bottom_up_parser-rs.cc \
-  cdec.cc \
-  cdec_ff.cc \
-  csplit.cc \
-  decoder.cc \
-  earley_composer.cc \
-  factored_lexicon_helper.cc \
-  ff.cc \
-  ff_basic.cc \
-  ff_bleu.cc \
-  ff_charset.cc \
-  ff_conll.cc \
-  ff_context.cc \
-  ff_const_reorder.cc \
-  ff_csplit.cc \
-  ff_external.cc \
-  ff_factory.cc \
-  ff_klm.cc \
-  ff_lm.cc \
-  ff_ngrams.cc \
-  ff_parse_match.cc \
-  ff_rules.cc \
-  ff_ruleshape.cc \
-  ff_soft_syn.cc \
-  ff_soft_syntax.cc \
-  ff_soft_syntax_mindist.cc \
-  ff_source_path.cc \
-  ff_source_syntax.cc \
-  ff_source_syntax2.cc \
-  ff_spans.cc \
-  ff_tagger.cc \
-  ff_wordalign.cc \
-  ff_wordset.cc \
-  ffset.cc \
-  forest_writer.cc \
-  fst_translator.cc \
-  tree2string_translator.cc \
-  grammar.cc \
-  hg.cc \
-  hg_intersect.cc \
-  hg_io.cc \
-  hg_remove_eps.cc \
-  hg_sampler.cc \
-  hg_union.cc \
-  incremental.cc \
-  lattice.cc \
-  lexalign.cc \
-  lextrans.cc \
-  node_state_hash.h \
-  tree_fragment.cc \
-  tree_fragment.h \
-  maxtrans_blunsom.cc \
-  phrasebased_translator.cc \
-  phrasetable_fst.cc \
-  rescore_translator.cc \
-  rule_lexer.cc \
-  scfg_translator.cc \
-  tagger.cc \
-  translator.cc \
-  trule.cc \
-  viterbi.cc
diff --git a/decoder/apply_models.h b/decoder/apply_models.h
index f03c973a..bfb37df1 100644
--- a/decoder/apply_models.h
+++ b/decoder/apply_models.h
@@ -3,9 +3,9 @@
 
 #include <iostream>
 
-struct ModelSet;
-struct Hypergraph;
-struct SentenceMetadata;
+class ModelSet;
+class Hypergraph;
+class SentenceMetadata;
 
 struct exhaustive_t {};
 
diff --git a/decoder/decoder.h b/decoder/decoder.h
index a545206b..6250d1eb 100644
--- a/decoder/decoder.h
+++ b/decoder/decoder.h
@@ -25,7 +25,7 @@ private:
 
 class SentenceMetadata;
 class Hypergraph;
-class DecoderImpl;
+struct DecoderImpl;
 
 class DecoderObserver {
  public:
@@ -38,7 +38,7 @@ class DecoderObserver {
   virtual void NotifyDecodingComplete(const SentenceMetadata& smeta);
 };
 
-class Grammar;  // TODO once the decoder interface is cleaned up,
+struct Grammar;  // TODO once the decoder interface is cleaned up,
                 // this should be somewhere else
 class Decoder {
  public:
diff --git a/decoder/factored_lexicon_helper.h b/decoder/factored_lexicon_helper.h
index 460bdebb..8e89f473 100644
--- a/decoder/factored_lexicon_helper.h
+++ b/decoder/factored_lexicon_helper.h
@@ -7,7 +7,7 @@
 #include <map>
 #include "tdict.h"
 
-struct SentenceMetadata;
+class SentenceMetadata;
 
 // when computing features, it can be advantageous to:
 //   1) back off to less specific forms (e.g., less highly inflected forms, POS tags, etc)
diff --git a/decoder/ff_csplit.h b/decoder/ff_csplit.h
index 227f2a14..1721ed38 100644
--- a/decoder/ff_csplit.h
+++ b/decoder/ff_csplit.h
@@ -6,7 +6,7 @@
 #include "ff.h"
 #include "klm/lm/model.hh"
 
-class BasicCSplitFeaturesImpl;
+struct BasicCSplitFeaturesImpl;
 class BasicCSplitFeatures : public FeatureFunction {
  public:
   BasicCSplitFeatures(const std::string& param);
@@ -22,7 +22,7 @@ class BasicCSplitFeatures : public FeatureFunction {
   boost::shared_ptr<BasicCSplitFeaturesImpl> pimpl_;
 };
 
-template <class M> class ReverseCharLMCSplitFeatureImpl;
+template <class M> struct ReverseCharLMCSplitFeatureImpl;
 class ReverseCharLMCSplitFeature : public FeatureFunction {
  public:
   ReverseCharLMCSplitFeature(const std::string& param);
diff --git a/decoder/ff_klm.cc b/decoder/ff_klm.cc
index 339a10c3..d395fb47 100644
--- a/decoder/ff_klm.cc
+++ b/decoder/ff_klm.cc
@@ -347,7 +347,6 @@ void KLanguageModel<Model>::TraversalFeaturesImpl(const SentenceMetadata& /* sme
                                           SparseVector<double>* features,
                                           SparseVector<double>* /*estimated_features*/,
                                           void* state) const {
-  double est = 0;
   double oovs = 0;
   double emit = 0;
   features->set_value(fid_, pimpl_->LookupWords(*edge.rule_, ant_states, &oovs, &emit, state));
diff --git a/decoder/ff_klm.h b/decoder/ff_klm.h
index c8350623..7a0b92ec 100644
--- a/decoder/ff_klm.h
+++ b/decoder/ff_klm.h
@@ -7,7 +7,7 @@
 #include "ff_factory.h"
 #include "ff.h"
 
-template <class Model> struct KLanguageModelImpl;
+template <class Model> class KLanguageModelImpl;
 
 // the supported template types are instantiated explicitly
 // in ff_klm.cc.
diff --git a/decoder/ff_lm.cc b/decoder/ff_lm.cc
index bc51076f..0780b266 100644
--- a/decoder/ff_lm.cc
+++ b/decoder/ff_lm.cc
@@ -211,7 +211,7 @@ class LanguageModelImpl : public LanguageModelInterface {
 
   // may be shorter than actual null-terminated length.  context must be null terminated.  len is just to save effort for subclasses that don't support contextID
   virtual int ContextSize(WordID const* context,int len) {
-    unsigned ret;
+    unsigned ret = 0;
     //ngram_.contextID((VocabIndex*)context,ret);
     return ret;
   }
diff --git a/decoder/ff_lm.h b/decoder/ff_lm.h
index 83a2e186..740cc492 100644
--- a/decoder/ff_lm.h
+++ b/decoder/ff_lm.h
@@ -44,8 +44,7 @@ class LanguageModelInterface {
   }
 };
 
-struct LanguageModelImpl;
-
+class LanguageModelImpl;
 class LanguageModel : public FeatureFunction {
  public:
   // param = "filename.lm [-o n]"
diff --git a/decoder/ff_ngrams.cc b/decoder/ff_ngrams.cc
index 38e1a60a..a45bd27d 100644
--- a/decoder/ff_ngrams.cc
+++ b/decoder/ff_ngrams.cc
@@ -33,11 +33,12 @@ struct State {
   }
   const State& operator=(const State<MAX_ORDER>& other) {
     memcpy(state, other.state, sizeof(state));
+    return *this;
   }
   explicit State(const State<MAX_ORDER>& other, unsigned order, WordID extend) {
-    char om1 = order - 1;
+    unsigned om1 = order - 1;
     if (!om1) { memset(state, 0, sizeof(state)); return; }
-    for (char i = 1; i < om1; ++i) state[i - 1]= other.state[i];
+    for (unsigned i = 1; i < om1; ++i) state[i - 1]= other.state[i];
     state[om1 - 1] = extend;
   }
   const WordID& operator[](size_t i) const { return state[i]; }
@@ -249,8 +250,6 @@ class NgramDetectorImpl {
 
  public:
   void LookupWords(const TRule& rule, const vector<const void*>& ant_states, SparseVector<double>* feats, SparseVector<double>* est_feats, void* remnant) {
-    double sum = 0.0;
-    double est_sum = 0.0;
     int num_scored = 0;
     int num_estimated = 0;
     bool saw_eos = false;
@@ -264,7 +263,6 @@ class NgramDetectorImpl {
         int unscored_ant_len = UnscoredSize(astate);
         for (int k = 0; k < unscored_ant_len; ++k) {
           const WordID cur_word = IthUnscoredWord(k, astate);
-          const bool is_oov = (cur_word == 0);
           SparseVector<double> p;
           if (cur_word == kSOS_) {
             state = BeginSentenceState();
diff --git a/decoder/ff_ngrams.h b/decoder/ff_ngrams.h
index 5dea9a7d..05b25974 100644
--- a/decoder/ff_ngrams.h
+++ b/decoder/ff_ngrams.h
@@ -7,7 +7,7 @@
 
 #include "ff.h"
 
-struct NgramDetectorImpl;
+class NgramDetectorImpl;
 class NgramDetector : public FeatureFunction {
  public:
   // param = "filename.lm [-o <order>] [-U <unigram-prefix>] [-B <bigram-prefix>] [-T <trigram-prefix>] [-4 <4-gram-prefix>] [-5 <5-gram-prefix>] [-S <separator>]
diff --git a/decoder/ff_spans.h b/decoder/ff_spans.h
index e2475491..d0036340 100644
--- a/decoder/ff_spans.h
+++ b/decoder/ff_spans.h
@@ -62,7 +62,6 @@ class CMR2008ReorderingFeatures : public FeatureFunction {
 
   // collapsed feature values
   bool use_collapsed_features_;
-  int fid_reorder_;
   std::pair<double, double> uncoditioned_vals_;
   std::vector<std::pair<double, double> > fvals_;
 };
diff --git a/decoder/ff_wordalign.cc b/decoder/ff_wordalign.cc
index dcb80110..5d4c80c7 100644
--- a/decoder/ff_wordalign.cc
+++ b/decoder/ff_wordalign.cc
@@ -28,8 +28,6 @@ namespace std { using std::tr1::unordered_map; }
 #include "tdict.h"   // Blunsom hack
 #include "filelib.h" // Blunsom hack
 
-static const int MAX_SENTENCE_SIZE = 100;
-
 static const int kNULL_i = 255;  // -1 as an unsigned char
 
 using namespace std;
diff --git a/decoder/grammar.h b/decoder/grammar.h
index add1a235..37c7276d 100644
--- a/decoder/grammar.h
+++ b/decoder/grammar.h
@@ -61,7 +61,7 @@ struct Grammar {
 
 typedef boost::shared_ptr<Grammar> GrammarPtr;
 
-class TGImpl;
+struct TGImpl;
 struct TextGrammar : public Grammar {
   TextGrammar();
   explicit TextGrammar(const std::string& file);
diff --git a/decoder/hg_union.cc b/decoder/hg_union.cc
index a659b6bc..da9f2624 100644
--- a/decoder/hg_union.cc
+++ b/decoder/hg_union.cc
@@ -64,9 +64,9 @@ void Union(const Hypergraph& in, Hypergraph* out) {
   double n_created = 0;
   for (const auto& in_node : in.nodes_) {
     HG::Node& out_node = out->nodes_[h2n[in_node.node_hash]];
-    for (const auto oeid : out_node.in_edges_) {
+    //for (const auto oeid : out_node.in_edges_) {
       // TODO hash currently existing edges for quick check for duplication
-    }
+    //}
     for (const auto ieid : in_node.in_edges_) {
       const HG::Edge& in_edge = in.edges_[ieid];
       // TODO: replace slow N^2 check with hashing
diff --git a/decoder/phrasebased_translator.h b/decoder/phrasebased_translator.h
index 10790d0d..85dc0a26 100644
--- a/decoder/phrasebased_translator.h
+++ b/decoder/phrasebased_translator.h
@@ -3,7 +3,7 @@
 
 #include "translator.h"
 
-class PhraseBasedTranslatorImpl;
+struct PhraseBasedTranslatorImpl;
 class PhraseBasedTranslator : public Translator {
  public:
   PhraseBasedTranslator(const boost::program_options::variables_map& conf);
diff --git a/decoder/scfg_translator.cc b/decoder/scfg_translator.cc
index 538f82ec..9831a3c3 100644
--- a/decoder/scfg_translator.cc
+++ b/decoder/scfg_translator.cc
@@ -62,7 +62,7 @@ PassThroughGrammar::PassThroughGrammar(const Lattice& input, const string& cat,
   for (int i = 0; i < input.size(); ++i) {
     const vector<LatticeArc>& alts = input[i];
     for (int k = 0; k < alts.size(); ++k) {
-      const int j = alts[k].dist2next + i;
+      // const int j = alts[k].dist2next + i;
       const string& src = TD::Convert(alts[k].label);
       if (ss.count(alts[k].label) == 0) {
         if (num_pt_features > 0) {
diff --git a/decoder/sentence_metadata.h b/decoder/sentence_metadata.h
index e13c2ca5..27fcac38 100644
--- a/decoder/sentence_metadata.h
+++ b/decoder/sentence_metadata.h
@@ -7,8 +7,8 @@
 #include "lattice.h"
 #include "tree_fragment.h"
 
-struct DocScorer;  // deprecated, will be removed
-struct Score;     // deprecated, will be removed
+class DocScorer;  // deprecated, will be removed
+class Score;     // deprecated, will be removed
 
 namespace cdec {
 enum InputType { kSEQUENCE, kTREE, kLATTICE, kFOREST, kUNKNOWN };
@@ -17,7 +17,7 @@ class TreeFragment;
 
 class SentenceMetadata {
  public:
-  friend class DecoderImpl;
+  friend struct DecoderImpl;
   SentenceMetadata(int id, const Lattice& ref) :
     sent_id_(id),
     src_len_(-1),
diff --git a/decoder/translator.h b/decoder/translator.h
index 096cf191..37070cda 100644
--- a/decoder/translator.h
+++ b/decoder/translator.h
@@ -54,7 +54,7 @@ class Translator {
   State state_;
 };
 
-class SCFGTranslatorImpl;
+struct SCFGTranslatorImpl;
 class SCFGTranslator : public Translator {
  public:
   SCFGTranslator(const boost::program_options::variables_map& conf);
@@ -72,7 +72,7 @@ class SCFGTranslator : public Translator {
   boost::shared_ptr<SCFGTranslatorImpl> pimpl_;
 };
 
-class FSTTranslatorImpl;
+struct FSTTranslatorImpl;
 class FSTTranslator : public Translator {
  public:
   FSTTranslator(const boost::program_options::variables_map& conf);
@@ -85,7 +85,7 @@ class FSTTranslator : public Translator {
   boost::shared_ptr<FSTTranslatorImpl> pimpl_;
 };
 
-class RescoreTranslatorImpl;
+struct RescoreTranslatorImpl;
 class RescoreTranslator : public Translator {
  public:
   RescoreTranslator(const boost::program_options::variables_map& conf);
@@ -98,7 +98,7 @@ class RescoreTranslator : public Translator {
   boost::shared_ptr<RescoreTranslatorImpl> pimpl_;
 };
 
-class Tree2StringTranslatorImpl;
+struct Tree2StringTranslatorImpl;
 class Tree2StringTranslator : public Translator {
  public:
   Tree2StringTranslator(const boost::program_options::variables_map& conf,
diff --git a/decoder/tree_fragment.cc b/decoder/tree_fragment.cc
index 5f717c5b..ff406adf 100644
--- a/decoder/tree_fragment.cc
+++ b/decoder/tree_fragment.cc
@@ -79,7 +79,7 @@ void TreeFragment::ParseRec(const StringPiece& tree, bool afs, unsigned cp, unsi
     cerr << "Expected ( at " << cp << endl;
     abort();
   }
-  const unsigned i = symp;
+  // const unsigned i = symp;
   vector<unsigned> rhs; // w | 0 = terminal, w | NT_BIT, index | FRONTIER_BIT
   ++cp;
   while(tree[cp] == ' ') { ++cp; }
@@ -119,7 +119,7 @@ void TreeFragment::ParseRec(const StringPiece& tree, bool afs, unsigned cp, unsi
       } 
     }
   } // continuent has completed, cp is at ), build node
-  const unsigned j = symp; // span from (i,j)
+  // const unsigned j = symp; // span from (i,j)
   // add an internal non-terminal symbol
   const unsigned nt = TD::Convert(tree.substr(nt_start, nt_end - nt_start).as_string()) | RHS_BIT;
   nodes[np] = TreeFragmentProduction(nt, rhs);
diff --git a/decoder/trule.h b/decoder/trule.h
index 7af46747..dda85cef 100644
--- a/decoder/trule.h
+++ b/decoder/trule.h
@@ -16,7 +16,7 @@
 class TRule;
 typedef boost::shared_ptr<TRule> TRulePtr;
 
-namespace cdec { struct TreeFragment; }
+namespace cdec { class TreeFragment; }
 
 struct AlignmentPoint {
   AlignmentPoint() : s_(), t_() {}