Commit Graph

38 Commits

Author SHA1 Message Date
Martin Atkins 096b1bb87b lang/funcs: Port the "reverse" function from the old functions set
This has the same functionality as the "reverse" function that was
implemented in the "config" package, but adapted to the new language type
system.
2019-03-19 17:32:19 -07:00
Martin Atkins edb5f82de1 lang/funcs: Convert the "setproduct" function to the new approach
In our new world it produces either a set of a tuple type or a list of a
tuple type, depending on the given argument types.

The resulting collection's element tuple type is decided by the element
types of the given collections, allowing type information to propagate
even if unknown values are present.
2019-01-16 09:57:16 -08:00
Martin Atkins 30497bbfb7 lang/funcs: zipmap accepts tuple of values and produces object
Now that our language supports tuple/object types in addition to list/map
types, it's convenient for zipmap to be able to produce an object type
given a tuple, since this makes it symmetrical with "keys" and "values"
such the the following identity holds for any map or object value "a"

    a == zipmap(keys(a), values(a))

When the values sequence is a tuple, the result has an object type whose
attribute types correspond to the given tuple types.

Since an object type has attribute names as part of its definition, there
is the additional constraint here that the result has an unknown type
(represented by the dynamic pseudo-type) if the given values is a tuple
and the given keys contains any unknown values. This isn't true for values
as a list because we can predict the resulting map element type using
just the list element type.
2018-11-28 07:45:43 -08:00
Martin Atkins ecc42b838c lang/funcs: Fix crash and improve precision of keys/values functions
The "values" function wasn't producing consistently-ordered keys in its
result, leading to crashes. This fixes #19204.

While working on these functions anyway, this also improves slightly their
precision when working with object types, where we can produce a more
complete result for unknown values because the attribute names are part
of the type. We can also produce results for known maps that have unknown
elements; these unknowns will also appear in the values(...) result,
allowing them to propagate through expressions.

Finally, this adds a few more test cases to try different permutations
of empty and unknown values.
2018-11-06 08:33:49 -08:00
Martin Atkins 8f578c365f lang/funcs: Permit object types in the "length" function
The implementation already allowed this, so this was just an oversight in
the type checking function.

This fixes #19278.
2018-11-06 08:33:49 -08:00
Radek Simko b41cda7d7a
Return cty.DynamicPseudoType instead 2018-10-23 12:42:46 +02:00
Radek Simko 4856d81300
lang: Fix crash in lookup function 2018-10-22 12:58:47 +02:00
James Bardin 9e3c23d890 verify that all LengthInt calls are known
There were some funcs with LengthInt calls on unknown values
2018-10-18 19:19:59 -04:00
Kristin Laemmert fd77e56fd6 lookup will return a tuple type when passed an object 2018-10-16 19:14:54 -07:00
Kristin Laemmert f54ee830d3 lang/funcs: update values to accept object types 2018-10-16 19:14:54 -07:00
Kristin Laemmert 4ec904bca7 funcs/lang lookup: validate that argument is map or object type 2018-10-16 19:14:54 -07:00
Kristin Laemmert d1d0ede069 lang/funcs: return default value if provided when object lookup fails to find attr 2018-10-16 19:14:54 -07:00
Kristin Laemmert 46e168a682 lang/funcs: update lookup() to accept object-typed values for "map" arg 2018-10-16 19:14:54 -07:00
Martin Atkins c990c9f36d lang/funcs: Don't panic if coalescelist gets an unknown list 2018-10-16 19:14:11 -07:00
Martin Atkins db58b88c2d lang/funcs: short-circuit with unknown index and tuple collection
Since we need to know the index to know the result type for a tuple, we
need a special case here to deal with that situation and return
cty.DynamicVal; we can't predict the result type exactly until we know the
element type.
2018-10-16 19:14:11 -07:00
Kristin Laemmert c23a971ed1 minor fixes 2018-10-16 18:49:20 -07:00
Kristin Laemmert 0dbecc54c0 functions: ValuesFunc - cleanup return type 2018-10-16 18:49:20 -07:00
Kristin Laemmert a213c4a648 functions: add tests and support for unknown values 2018-10-16 18:49:20 -07:00
Kristin Laemmert d802d5c624 functions: pr feedback fixes 2018-10-16 18:49:20 -07:00
Kristin Laemmert ff4b3d763b functions: fix lookup()'s handling of numberical defaults 2018-10-16 18:49:20 -07:00
Kristin Laemmert 4f5c03339a functions: ZipmapFunc 2018-10-16 18:49:20 -07:00
Kristin Laemmert 605e23db6b various code review fixes 2018-10-16 18:49:20 -07:00
Kristin Laemmert 6463dd90e9 functions: TransposeFunc, SliceFunc 2018-10-16 18:49:20 -07:00
Kristin Laemmert 30671d85ad functions: MergeFunc 2018-10-16 18:49:20 -07:00
Kristin Laemmert aecd7b2e62 functions: LookupFunc 2018-10-16 18:49:20 -07:00
Kristin Laemmert 4d8c398f8e functions: KeysFunc 2018-10-16 18:49:20 -07:00
Kristin Laemmert 21daabe680 functions: MapFunc 2018-10-16 18:49:20 -07:00
Kristin Laemmert da02e0da4d functions: ListFunc 2018-10-16 18:49:20 -07:00
Kristin Laemmert 529c2c3cc9 functions: FlattenFunc 2018-10-16 18:49:20 -07:00
Kristin Laemmert 4dd3ffc127 porting matchkeys 2018-10-16 18:49:20 -07:00
Kristin Laemmert b979053361 general cleanup - addressing code review 2018-10-16 18:49:20 -07:00
Kristin Laemmert 498ffbf77b adding some test cases and tweaking implementation to address them 2018-10-16 18:49:20 -07:00
Kristin Laemmert 0cbcd75ebb port distinct and chunklist functions 2018-10-16 18:49:20 -07:00
Kristin Laemmert 8aac7587f7 port index and contains functions 2018-10-16 18:49:20 -07:00
Kristin Laemmert e697e7d733 port compact function 2018-10-16 18:49:20 -07:00
Kristin Laemmert 1901d5d184 port coalescelist function 2018-10-16 18:49:20 -07:00
Kristin Laemmert 04ac87747c base64decode: check that the decoded (not encoded) string is valid UTF-8 2018-10-16 18:49:20 -07:00
Martin Atkins 129f5fe74d lang/funcs: port some of Terraform's built-in functions
These implementations are adaptations of the existing implementations in
config/interpolate_funcs.go, updated to work with the cty API.

The set of functions chosen here was motivated mainly by what Terraform's
existing context tests depend on, so we can get the contexts tests back
into good shape before fleshing out the rest of these functions.
2018-10-16 18:48:28 -07:00