[c++/m] Add Source compare function

Author: mpsonntag

nix_mx.cc

@@ -271,6 +271,7 @@ void mexFunction(int            nlhs,
             .reg("referringTags", GETTER(std::vector<nix::Tag>, nix::Source, referringTags))
             .reg("referringMultiTags", GETTER(std::vector<nix::MultiTag>, nix::Source, referringMultiTags));
         methods->add("Source::openSourceIdx", nixsource::openSourceIdx);
+        methods->add("Source::compare", nixsource::compare);
 
         classdef<nix::Tag>("Tag", methods)
             .desc(&nixtag::describe)

src/nixsource.cc

@@ -33,4 +33,10 @@ namespace nixsource {
         output.set(0, currObj.getSource(idx));
     }
 
+    void compare(const extractor &input, infusor &output) {
+        nix::Source currObj = input.entity<nix::Source>(1);
+        nix::Source other = input.entity<nix::Source>(2);
+        output.set(0, currObj.compare(other));
+    }
+
 } // namespace nixsource

src/nixsource.h

@@ -17,6 +17,8 @@ namespace nixsource {
 
     void openSourceIdx(const extractor &input, infusor &output);
 
+    void compare(const extractor &input, infusor &output);
+
 } // namespace nixsource
 
 #endif

tests/TestSource.m

@@ -25,6 +25,7 @@
     funcs{end+1} = @test_referring_data_arrays;
     funcs{end+1} = @test_referring_tags;
     funcs{end+1} = @test_referring_multi_tags;
+    funcs{end+1} = @test_compare;
 end
 
 %% Test: fetch sources
@@ -282,3 +283,18 @@
     t2.add_source(s);
     assert(size(s.referring_multi_tags, 1) == 2);
 end
+
+function [] = test_compare( varargin )
+%% Test: Compare Source entities
+    f = nix.File(fullfile(pwd, 'tests', 'testRW.h5'), nix.FileMode.Overwrite);
+    b1 = f.create_block('testBlock1', 'nixBlock');
+    b2 = f.create_block('testBlock2', 'nixBlock');
+    s1 = b1.create_source('testSource1', 'nixSource');
+    s2 = b1.create_source('testSource2', 'nixSource');
+    s3 = b2.create_source('testSource1', 'nixSource');
+
+    assert(s1.compare(s2) < 0);
+    assert(s1.compare(s1) == 0);
+    assert(s2.compare(s1) > 0);
+    assert(s1.compare(s3) ~= 0);
+end