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2013-12-12 Siva Chandra Reddy <sivachandra@google.com>

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PR python/16113
	* NEWS (Python Scripting): Add entry for the new feature and the
	new attribute of gdb.Field objects.
	* python/py-type.c (gdbpy_is_field): New function
	(convert_field): Add 'parent_type' attribute to gdb.Field
	objects.
	* python/py-value.c (valpy_getitem): Allow subscript value to be
	a gdb.Field object.
	(value_has_field): New function
	(get_field_flag): New function
	* python/python-internal.h (gdbpy_is_field): Add declaration.

	testsuite/
	* gdb.python/py-value-cc.cc: Improve test case.
	* gdb.python/py-value-cc.exp: Add new tests to test usage of
	gdb.Field objects as subscripts on gdb.Value objects.

	doc/
	* gdb.texinfo (Values From Inferior): Add a note about using
	gdb.Field objects as subscripts on gdb.Value objects.
	(Types In Python): Add description about the new attribute
	"parent_type" of gdb.Field objects.
This commit is contained in:
Siva Chandra 2013-12-12 15:18:27 -08:00
parent ec0d6081a0
commit a16b0e220d
10 changed files with 251 additions and 3 deletions
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35
gdb/testsuite/gdb.python/py-value-cc.exp
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@ -44,3 +44,38 @@ gdb_test "python print (str(gdb.parse_and_eval(\"int_ptr_ref\").dereference().ty
gdb_test "python print (str(gdb.parse_and_eval(\"int_ptr_ref\").referenced_value().type))" "int_ptr"
gdb_test "python print (str(gdb.parse_and_eval(\"int_ptr_ref\").referenced_value().dereference()))" "10"
gdb_test "python print (str(gdb.parse_and_eval(\"int_ptr_ref\").referenced_value().referenced_value()))" "10"
# Tests for gdb.Value[gdb.Field]
gdb_test_no_output "python b = gdb.parse_and_eval('b')" "init b"
gdb_test_no_output "python b_fields = b.type.fields()" "init b_fields"
gdb_test_no_output "python b_obj = gdb.parse_and_eval('b_obj')" "init b_obj"
gdb_test_no_output "python b_ref = gdb.parse_and_eval('b_ref')" "init b_ref"
gdb_test_no_output "python b_td = gdb.parse_and_eval('b_td')" "init b_td"
gdb_test_no_output "python u = gdb.parse_and_eval('u')" "init u"
gdb_test_no_output "python u_fields = u.type.fields()" "init u_fields"
gdb_test "python print(b\[b_fields\[1\]\])" "97 'a'" "b.a via field"
gdb_test "python print(b\[b_fields\[0\]\].type)" "A" \
"type of b's base class via field"
gdb_test "python print(b\[b_fields\[0\]\]\['a'\])" "10" "b.A::a via field"
gdb_test "python print(b_obj\[b_fields\[1\]\])" "98 'b'" "b_obj->a via field"
gdb_test "python print(b_obj\[b_fields\[0\]\].type.target())" "A" \
"type of b_obj's base class via field"
gdb_test "python print(b_obj\[b_fields\[0\]\]\['a'\])" "100" \
"b_obj->A::a via field"
gdb_test "python print(b_ref\[b_fields\[1\]\])" "98 'b'" "b_ref.a via field"
gdb_test "python print(b_ref\[b_fields\[0\]\].type.target())" "A" \
"type of b_ref's base class via field"
gdb_test "python print(b_ref\[b_fields\[0\]\]\['a'\])" "100" \
"b_ref.A::a via field"
gdb_test "python print(b_td\[b_fields\[1\]\])" "98 'b'" "b_td.a via field"
gdb_test "python print(b_td\[b_fields\[0\]\].type.target())" "A" \
"type of b_td's base class via field"
gdb_test "python print(b_td\[b_fields\[0\]\]\['a'\])" "100" \
"b_td.A::a via field"
gdb_test "python print(u\[u_fields\[0\]\])" "99.*" "u's first field via field"
gdb_test "python print(u\[u_fields\[1\]\])" "99.*" "u's second field via field"