Commit Graph

14 Commits

Author SHA1 Message Date
James Bardin c4eefd4b5e Allow primitive type in maps via all FieldReaders
Now that we can read primitive type out of a map, each field reader
needs to be able to set the proper type as expected.
2016-11-17 15:35:08 -05:00
Clint a84aa5e914 Revert "helper/schema: Make nested Set(s) in List(s) work" (#7436) 2016-06-30 10:48:52 -05:00
Radek Simko 378b526dc3 helper/schema: Add regression tests for nested Set/List
Although DiffFieldReader was the one mostly responsible for a buggy behaviour
more tests were added throughout the debugging process most of which
would fail without the bugfix.

 - ResourceData
 - MultiLevelFieldReader
 - MapFieldReader
 - DiffFieldReader
2016-06-28 17:40:44 +01:00
James Nugent 074545e536 core: Use .% instead of .# for maps in state
The flatmapped representation of state prior to this commit encoded maps
and lists (and therefore by extension, sets) with a key corresponding to
the number of elements, or the unknown variable indicator under a .# key
and then individual items. For example, the list ["a", "b", "c"] would
have been encoded as:

    listname.# = 3
    listname.0 = "a"
    listname.1 = "b"
    listname.2 = "c"

And the map {"key1": "value1", "key2", "value2"} would have been encoded
as:

    mapname.# = 2
    mapname.key1 = "value1"
    mapname.key2 = "value2"

Sets use the hash code as the key - for example a set with a (fictional)
hashcode calculation may look like:

    setname.# = 2
    setname.12312512 = "value1"
    setname.56345233 = "value2"

Prior to the work done to extend the type system, this was sufficient
since the internal representation of these was effectively the same.
However, following the separation of maps and lists into distinct
first-class types, this encoding presents a problem: given a state file,
it is impossible to tell the encoding of an empty list and an empty map
apart. This presents problems for the type checker during interpolation,
as many interpolation functions will operate on only one of these two
structures.

This commit therefore changes the representation in state of maps to use
a "%" as the key for the number of elements. Consequently the map above
will now be encoded as:

    mapname.% = 2
    mapname.key1 = "value1"
    mapname.key2 = "value2"

This has the effect of an empty list (or set) now being encoded as:

    listname.# = 0

And an empty map now being encoded as:

    mapname.% = 0

Therefore we can eliminate some nasty guessing logic from the resource
variable supplier for interpolation, at the cost of having to migrate
state up front (to follow in a subsequent commit).

In order to reduce the number of potential situations in which resources
would be "forced new", we continue to accept "#" as the count key when
reading maps via helper/schema. There is no situation under which we can
allow "#" as an actual map key in any case, as it would not be
distinguishable from a list or set in state.
2016-06-09 10:49:42 +01:00
Panagiotis Moustafellos e4845f75cc removed extra parentheses 2015-10-08 15:48:04 +03:00
Mitchell Hashimoto 9c10a89cf8 helper/schema: FieldReaderMap should mark map as exists if anything set 2015-04-21 22:11:00 +02:00
Mitchell Hashimoto 448887f3c4 helper/schema: map counts in state 2015-01-15 14:12:24 -08:00
Mitchell Hashimoto 1fcd24cf67 helper/schema: add float type 2015-01-10 16:04:01 -08:00
Mitchell Hashimoto 361d00347a helper/schema: refactor tests for fieldreader to be common 2015-01-10 12:42:15 -08:00
Mitchell Hashimoto e57f3f69b1 helper/schema: empty maps, support reading objects directly 2015-01-09 15:07:02 -08:00
Mitchell Hashimoto b4bf813151 helper/schema: too big to fail 2015-01-08 18:02:19 -08:00
Mitchell Hashimoto 7e379cb1a1 helper/schema: field readers no longer take a schema as arg 2015-01-03 12:13:46 -05:00
Mitchell Hashimoto 73726e83b2 helper/schema: DiffFieldReader for reading data from a diff 2014-12-20 02:17:35 +05:30
Mitchell Hashimoto 5f063d321f helper/schema: FieldReader needs to return computed status 2014-12-19 06:15:04 -05:00