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QL Language Spec: Trailing comma in set literal

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Edoardo Pirovano
2021-08-18 13:52:01 +01:00
parent d325d2ae81
commit 18020707b8
1 changed files with 4 additions and 2 deletions
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docs/codeql/ql-language-reference/ql-language-specification.rst
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@@ -1323,7 +1323,7 @@ Set literals denote a choice from a collection of values.
::
setliteral ::= "[" expr ("," expr)* "]"
setliteral ::= "[" expr ("," expr)* ","? "]"
Set literals can be of any type, but the types within a set literal have to be consistent according to the following criterion: At least one of the set elements has to be of a type that is a supertype of all the set element types. This supertype is the type of the set literal. For example, ``float`` is a supertype of ``float`` and ``int``, therefore ``x = [4, 5.6]`` is valid. On the other hand, ``y = [5, "test"]`` does not adhere to the criterion.
@@ -1331,6 +1331,8 @@ The values of a set literal expression are all the values of all the contained e
Set literals are supported from release 2.1.0 of the CodeQL CLI, and release 1.24 of LGTM Enterprise.
Since release 2.6.3 of the CodeQL CLI, and release 1.28 of LGTM Enterprise, a trailing comma is allowed in a set literal.
Disambiguation of expressions
-----------------------------
@@ -2168,7 +2170,7 @@ The complete grammar for QL is as follows:
range ::= "[" expr ".." expr "]"
setliteral ::= "[" expr ("," expr)* "]"
setliteral ::= "[" expr ("," expr)* ","? "]"
simpleId ::= lowerId | upperId