Menu

- Learn
- Documentation
  - Language Reference
  - Library Reference
  - Command-line Reference
  - Feature Overview
  - Articles
- Downloads
- Packages
- Community
  - Blog
  - Orgs using D
  - Twitter
  - Calendar
  - Forums
  - IRC
  - Community Discord
  - Wiki
  - GitHub
  - Issues
  - Get involved
  - Contributors
  - Foundation
  - Security Team
  - Donate
  - Sponsors
- Resources
  - Tour
  - Books
  - Tutorials
  - Tools
  - Editors
  - IDEs
  - run.dlang.io
  - Visual D
  - Acknowledgments
  - D Style
  - Glossary
  - Sitemap

Search
Report a bug
If you spot a problem with this page, click here to create a Bugzilla issue.
Improve this page
Quickly fork, edit online, and submit a pull request for this page. Requires a signed-in GitHub account. This works well for small changes. If you'd like to make larger changes you may want to consider using a local clone.

# dmd.delegatize

Implements conversion from expressions to delegates for lazy parameters.

Specification Lazy Parameters

Authors:
Walter Bright
License:
Boost License 1.0

Source delegatize.d

Documentation https://dlang.org/phobos/dmd_delegatize.html

Coverage https://codecov.io/gh/dlang/dmd/src/master/src/dmd/delegatize.d

Expression `toDelegate`(Expression `e`, Type `t`, Scope* `sc`);
  Convert expression into a delegate.
  Used to convert the argument to a lazy parameter.
  Parameters:

  Expression `e` | argument to convert to a delegate
  Type `t` | the type to be returned by the delegate
  Scope* `sc` | context

  Returns:
  A delegate literal
bool `lambdaCheckForNestedRef`(Expression `e`, Scope* `sc`);
  Look for references to variables in a scope enclosing the new function literal.
  Essentially just calls checkNestedReference() for each variable reference in e`.
  Parameters:

  Scope* `sc` | context
  Expression `e` | expression to check

  Returns:
  true if error occurs.
bool `ensureStaticLinkTo`(Dsymbol `s`, Dsymbol `p`);
  See if context `s` is nested within context `p`, meaning it `p` is reachable at runtime by walking the static links. If any of the intervening contexts are function literals, make sure they are delegates.
  Parameters:

  Dsymbol `s` | inner context
  Dsymbol `p` | outer context

  Returns:
  true means it is accessible by walking the context pointers at runtime

  References for static links see https://en.wikipedia.org/wiki/Call_stack#Functions_of_the_call_stack

Copyright © 1999-2020 by the D Language Foundation | Page generated by Ddoc on Mon May 11 10:58:01 2020