* Add coverage measurement constant COVERAGE__. This constant is not

  for casual use.  Usage: (1) assign {} to COVERAGE__, (2) require or
  load Ruby source file, and (3) COVERAGE__["sourcefilepath"] will
  return an array whose elements represent number of executions per
  line of source code.

* vm_core.h: add field of coverage array to iseq.

* iseq.c (prepare_iseq_build): ditto.

* insns.def (trace): update coverage array.

* parse.y (coverage): create and initialize coverage array.

* compile.h (ADD_TRACE): add trace instruction to update covearge
  array.

* thread.c (clear_coverage): delete coverage array when forking.
  Otherwise, double count of coverage may occur.

* lib/coverage.rb: sample coverage measurement tool.

* error.c: distinguish explicitly between parse_in_eval and
  mild_compile_error.

* load.c: ditto.

* vm_eval.c: ditto.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@17781 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 2 insertions, 0 deletions

diff --git a/vm_core.h b/vm_core.h
index 0614e660dc..700c33f224 100644
--- a/vm_core.h
+++ b/vm_core.h
@@ -201,6 +201,7 @@ struct rb_iseq_struct {
     VALUE *iseq_encoded; /* encoded iseq */
     unsigned long iseq_size;
     VALUE mark_ary;	/* Array: includes operands which should be GC marked */
+    VALUE coverage;     /* coverage array */
 
     /* insn info, must be freed */
     struct iseq_insn_info_entry *insn_info_table;
@@ -448,6 +449,7 @@ struct rb_thread_struct
     struct rb_vm_trap_tag *trap_tag;
 
     int parse_in_eval;
+    int mild_compile_error;
 
     /* storage */
     st_table *local_storage;