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36 lines
1.7 KiB
Markdown
36 lines
1.7 KiB
Markdown
# Library Definitions
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This directory contains definitions for `libircd`
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The purpose of `libircd` is to facilitate the execution of a server which
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handles requests from end-users. The library hosts a set of pluggable modules
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which may introduce the actual application features (or the "business logic")
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of the server.
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##### Implied #include <ircd.h>
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The `ircd.h` [standard include group](../include/ircd#what-to-include)
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is pre-compiled and included *first* by default for every compilation unit in
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this directory. Developers do not have to worry about including project headers
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in a compilation unit, especially when creating and reorganizing either of them.
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Note that because `ircd.h` is include _above_ any manually included header,
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there is a theoretical possibility for a conflict. We make a serious effort
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to prevent `ircd.h` from introducing pollution outside of our very specific
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namespaces (see: [Project Namespaces](../include/ircd#project-namespaces)).
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##### Dependency Isolation
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Compilation units are primarily divided around the inclusion of a specific
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header or third-party dependency which is not involved in the
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[ircd.h include group](../include/ircd#what-to-include). Second to that, units
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tend to be divided by namespace and the subsystem they're implementing. Units
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can further be divided if they become unwieldy, but we bias toward large aggregate
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units in this library. Within these large units, there are divisions which group
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the definitions by the `include/ircd/` header which declares them.
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We do not included third-party headers in our own [headers](../include/ircd)
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which are included by others. A developer of an `ircd::` interface can choose
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to either forward declare third-party symbols in our headers, or wrap more
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complicated functionality.
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