remove lines mode from ddcov extension as it is dead code right now

ext/datadog_cov/datadog_cov.c

@@ -1,15 +1,10 @@
 #include <ruby.h>
 #include <ruby/debug.h>
 
-// constants
-#define DD_COV_TARGET_FILES 1
-#define DD_COV_TARGET_LINES 2
-
 // Data structure
 struct dd_cov_data
 {
   VALUE root;
-  int mode;
   VALUE coverage;
 };
 
@@ -49,15 +44,13 @@ static VALUE dd_cov_allocate(VALUE klass)
   VALUE obj = TypedData_Make_Struct(klass, struct dd_cov_data, &dd_cov_data_type, dd_cov_data);
   dd_cov_data->coverage = rb_hash_new();
   dd_cov_data->root = Qnil;
-  dd_cov_data->mode = DD_COV_TARGET_FILES;
   return obj;
 }
 
 // DDCov methods
 static VALUE dd_cov_initialize(int argc, VALUE *argv, VALUE self)
 {
   VALUE opt;
-  int mode;
 
   rb_scan_args(argc, argv, "10", &opt);
   VALUE rb_root = rb_hash_lookup(opt, ID2SYM(rb_intern("root")));
@@ -66,25 +59,10 @@ static VALUE dd_cov_initialize(int argc, VALUE *argv, VALUE self)
     rb_raise(rb_eArgError, "root is required");
   }
 
-  VALUE rb_mode = rb_hash_lookup(opt, ID2SYM(rb_intern("mode")));
-  if (!RTEST(rb_mode) || rb_mode == ID2SYM(rb_intern("files")))
-  {
-    mode = DD_COV_TARGET_FILES;
-  }
-  else if (rb_mode == ID2SYM(rb_intern("lines")))
-  {
-    mode = DD_COV_TARGET_LINES;
-  }
-  else
-  {
-    rb_raise(rb_eArgError, "mode is invalid");
-  }
-
   struct dd_cov_data *dd_cov_data;
   TypedData_Get_Struct(self, struct dd_cov_data, &dd_cov_data_type, dd_cov_data);
 
   dd_cov_data->root = rb_root;
-  dd_cov_data->mode = mode;
 
   return Qnil;
 }
@@ -120,32 +98,7 @@ static void dd_cov_update_line_coverage(rb_event_flag_t event, VALUE data, VALUE
 
   VALUE rb_str_source_file = rb_str_new2(filename);
 
-  if (dd_cov_data->mode == DD_COV_TARGET_FILES)
-  {
-    rb_hash_aset(dd_cov_data->coverage, rb_str_source_file, Qtrue);
-    return;
-  }
-
-  // this isn't optimized yet, this is a POC to show that lines coverage is possible
-  // ITR beta is going to use files coverage, we'll get back to this part when
-  // we need to implement lines coverage
-  if (dd_cov_data->mode == DD_COV_TARGET_LINES)
-  {
-    int line_number = rb_sourceline();
-    if (line_number <= 0)
-    {
-      return;
-    }
-
-    VALUE rb_lines = rb_hash_aref(dd_cov_data->coverage, rb_str_source_file);
-    if (rb_lines == Qnil)
-    {
-      rb_lines = rb_hash_new();
-      rb_hash_aset(dd_cov_data->coverage, rb_str_source_file, rb_lines);
-    }
-
-    rb_hash_aset(rb_lines, INT2FIX(line_number), Qtrue);
-  }
+  rb_hash_aset(dd_cov_data->coverage, rb_str_source_file, Qtrue);
 }
 
 static VALUE dd_cov_start(VALUE self)

sig/datadog/ci/itr/coverage/ddcov.rbs

@@ -4,7 +4,7 @@ module Datadog
       module Coverage
         class DDCov
 
-          def initialize: (root: String, ?mode: Symbol) -> void
+          def initialize: (root: String) -> void
 
           def start: () -> void