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rust: replace most "operation" structs with functions...

rust: replace most "operation" structs with functions The hg-core crate has a partially-formed concept of "operation", represented as structs with constructors and a `run` method. Each struct’s contructor takes different parameters, and each `run` has a different return type. Constructors typically don’t do much more than store parameters for `run` to access them. There was a comment about adding an `Operation` trait when the language supports expressing something so general, but it’s hard to imagine how operations with such different APIs could be used in a generic context. This commit starts removing the concept of "operation", since those are pretty much just functions. Differential Revision: https://phab.mercurial-scm.org/D9595

Simon Sapin - - Load All Authors

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             commands.rs
        
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                | application/rls-services+xml
            
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             / rust / rhg / src / commands.rs
          
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      pub mod cat;

      pub mod debugdata;

      pub mod debugrequirements;

      pub mod files;

      pub mod root;

      use crate::error::CommandError;

      use crate::ui::Ui;

      /// The common trait for rhg commands

      ///

      /// Normalize the interface of the commands provided by rhg

      pub trait Command {

          fn run(&self, ui: &Ui) -> Result<(), CommandError>;

      }

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				pub mod cat;
				pub mod debugdata;
				pub mod debugrequirements;
				pub mod files;
				pub mod root;
				use crate::error::CommandError;
				use crate::ui::Ui;

				/// The common trait for rhg commands
				///
				/// Normalize the interface of the commands provided by rhg
				pub trait Command {
				fn run(&self, ui: &Ui) -> Result<(), CommandError>;
				}