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comment_references.md

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Pattern: Malformed comment reference

Issue: -

Description

DO reference only in scope identifiers in doc comments.

If you surround things like variable, method, or type names in square brackets, then dartdoc will look up the name and link to its docs. For this all to work, ensure that all identifiers in docs wrapped in brackets are in scope.

For example,

Example of correct code:

/// Return the larger of [a] or [b].
int max_int(int a, int b) { ... }

On the other hand, assuming outOfScopeId is out of scope:

Example of incorrect code:

void f(int outOfScopeId) { ... }

Note that the square bracket comment format is designed to allow comments to refer to declarations using a fairly natural format but does not allow arbitrary expressions. In particular, code references within square brackets can consist of either

  • a single identifier where the identifier is any identifier in scope for the comment (see the spec for what is in scope in doc comments),
  • two identifiers separated by a period where the first identifier is the name of a class that is in scope and the second is the name of a member declared in the class,
  • a single identifier followed by a pair of parentheses where the identifier is the name of a class that is in scope (used to refer to the unnamed constructor for the class), or
  • two identifiers separated by a period and followed by a pair of parentheses where the first identifier is the name of a class that is in scope and the second is the name of a named constructor (not strictly necessary, but allowed for consistency).

Further Reading