22 Commits (e2b6ccad8a755fb9ea1b32fb71eec02216438111)

Author	SHA1	Message	Date
James Nugent	f49583d25a	core: support native list variables in config ... This commit adds support for native list variables and outputs, building up on the previous change to state. Interpolation functions now return native lists in preference to StringList. List variables are defined like this: variable "test" { # This can also be inferred type = "list" default = ["Hello", "World"] } output "test_out" { value = "${var.a_list}" } This results in the following state: ``` ... "outputs": { "test_out": [ "hello", "world" ] }, ... ``` And the result of terraform output is as follows: ``` $ terraform output test_out = [ hello world ] ``` Using the output name, an xargs-friendly representation is output: ``` $ terraform output test_out hello world ``` The output command also supports indexing into the list (with appropriate range checking and no wrapping): ``` $ terraform output test_out 1 world ``` Along with maps, list outputs from one module may be passed as variables into another, removing the need for the `join(",", var.list_as_string)` and `split(",", var.list_as_string)` which was previously necessary in Terraform configuration. This commit also updates the tests and implementations of built-in interpolation functions to take and return native lists where appropriate. A backwards compatibility note: previously the concat interpolation function was capable of concatenating either strings or lists. The strings use case was deprectated a long time ago but still remained. Because we cannot return `ast.TypeAny` from an interpolation function, this use case is no longer supported for strings - `concat` is only capable of concatenating lists. This should not be a huge issue - the type checker picks up incorrect parameters, and the native HIL string concatenation - or the `join` function - can be used to replicate the missing behaviour.	10 years ago
James Nugent	e57a399d71	core: Use native HIL maps instead of flatmaps ... This changes the representation of maps in the interpolator from the dotted flatmap form of a string variable named "var.variablename.key" per map element to use native HIL maps instead. This involves porting some of the interpolation functions in order to keep the tests green, and adding support for map outputs. There is one backwards incompatibility: as a result of an implementation detail of maps, one could access an indexed map variable using the syntax "${var.variablename.key}". This is no longer possible - instead HIL native syntax - "${var.variablename["key"]}" must be used. This was previously documented, (though not heavily used) so it must be noted as a backward compatibility issue for Terraform 0.7.	10 years ago
Mitchell Hashimoto	5f3de02fa9	remove config/lang, use hashicorp/hil	10 years ago
Mitchell Hashimoto	693736b52a	config: fix tests	10 years ago
Paul Hinze	e88aeede9b	core: allow distinguishing between empty lists and strings ... Had to handle a lot of implicit leaning on a few properties of the old representation: * Old representation allowed plain strings to be treated as lists without problem (i.e. shoved into strings.Split), now strings need to be checked whether they are a list before they are treated as one (i.e. shoved into StringList(s).Slice()). * Tested behavior of 0 and 1 length lists in formatlist() was a side effect of the representation. Needs to be special cased now to maintain the behavior. * Found a pretty old context test failure that was wrong in several different ways. It's covered by TestContext2Apply_multiVar so I removed it.	11 years ago
Paul Hinze	7238b3b4af	core: encapsulate representation of StringList ... Now the only code that cares about how StringLists are represented lives inside string_list.go ...which gives us the ability to change it! :)	11 years ago
Paul Hinze	10b3abf405	config: introduce StringList to abstract over list hack ... This is the initial pure "all tests passing without a diff" stage. The plan is to change the internal representation of StringList to include a suffix delimiter, which will allow us to recognize empty and single-element lists.	11 years ago
Mitchell Hashimoto	740c25d4ea	config: convert to config/lang	11 years ago
Luke Amdor	e970eea3cd	adding literal colon to interpolated regex	12 years ago
Mitchell Hashimoto	61b46c8612	config: add join() function	12 years ago
Mitchell Hashimoto	a931707a6a	config: removeCurrent finds the proper map	12 years ago
Mitchell Hashimoto	5c7ce2d003	config: make the tests more robust	12 years ago
Mitchell Hashimoto	22908d67ba	config: first pass at replacing lists within a slice	12 years ago
Mitchell Hashimoto	eac01c2ac8	config: replace interpolations in block keys [GH-234]	12 years ago
Mitchell Hashimoto	4a3dff2441	config: allow '/' in string args	12 years ago
Mitchell Hashimoto	742e33c672	config: accept file("test.txt") [GH-145]	12 years ago
Mitchell Hashimoto	b19a976696	config: additional tests for sanity	12 years ago
Mitchell Hashimoto	4f57437144	config: parser fixes and application	12 years ago
Mitchell Hashimoto	7578fb8bdc	config: interpolationWalker detects functions	12 years ago
Mitchell Hashimoto	cabc007ec4	config: get rid of the variable*Walkers, replace with more generic	12 years ago
Mitchell Hashimoto	e8fe26488a	config: interpolationWalk seems to work	12 years ago
Mitchell Hashimoto	4c9e0f395c	config: basic interpolationWalker	12 years ago