[#BOO-919] Compiler doesn't notice inherited indexers on external interfaces

Boo

Compiler doesn't notice inherited indexers on external interfaces

Created: 16/Nov/07 03:22 PM Updated: 16/Nov/07 04:00 PM

Component/s:

Compiler

Affects Version/s:

0.8

Fix Version/s:

0.8.1

Time Tracking:

Not Specified

Testcase included:

yes

Description

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Take the following two assemblies:

namespace Test

interface IBase:
  self[i as int] as object:
    get
    set

interface IDerived(IBase):
  pass

class Derived(IDerived):
  self[i as int] as object:
    get:
      print "Got ${i}"
      return object()
    set:
      print "Set ${i} to ${value}"

"""
Got 42
System.Object
Set 613 to Good
"""
namespace Test

ider = Derived() as IDerived
print ider[42]
ider[613] = "Good"

This prints the following error:

interface_2b.boo(7,7): BCE0048: Type 'Test.IDerived' does not support slicing.

As a single assembly, this acts as expected.

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Marcus Griep - 16/Nov/07 04:00 PM

Another example that comes from using System.Data:

import System
import System.Data
import System.Data.SqlClient

sql = SqlCommand() as IDbCommand

try:
	reader = sql.ExecuteReader()
except as InvalidOperationException:
	caught = true
	
assert caught

try:
	print reader[0]
except as NullReferenceException:
	caughtAgain = true

assert caughtAgain

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Marcus Griep - 16/Nov/07 04:00 PM

Revision 2754