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Display class subclasses #13

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Display class subclasses #13

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0273da4
Add command to display direct subclasses.
fracek Sep 6, 2014
b06212d
Change subclasses command to display class hierarchy.
fracek Sep 6, 2014
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51 changes: 51 additions & 0 deletions deft-browse/deft-browse.dylan
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Original file line number Diff line number Diff line change
Expand Up @@ -208,3 +208,54 @@ define command inspect ($deft-commands)
implementation
inspect-dylan-object(dylan-object-name);
end;

define method print-class-subclasses
(project :: <project-object>, object, depth :: <integer>, max-depth :: <integer>)
let id = environment-object-id(project, object);
format-out("%s is not a class.\n", id.id-name);
end method;

define method print-class-subclasses
(project :: <project-object>, object == #f, depth :: <integer>, max-depth :: <integer>)
format-out("Object not found.\n");
end method;

define method print-class-subclasses
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One option (in a different PR) would be to add "..." after classes that have already been displayed rather than displaying their subclasses again.

(project :: <project-object>, object :: <class-object>, depth :: <integer>, max-depth :: <integer>)
let id = environment-object-id(project, object);
let subclasses = class-direct-subclasses(project, object);
for (sc in subclasses)
let sc-id = environment-object-id(project, sc);
// use 2 column indent, starting from column 2
let indent = make(<byte-string>, size: (depth + 1) * 2);
format-out("%s%s\n", indent, sc-id.id-name);
if (depth < max-depth)
print-class-subclasses(project, sc, depth + 1, max-depth);
end if;
end for;
end method;

define function subclasses-for-class(name :: <string>, max-depth :: <integer>)
let project = dylan-current-project($deft-context);
if (project)
let library = project-library(project);
let object = find-environment-object(project, name,
library: library,
module: first(library-modules(project, library)));
print-class-subclasses(project, object, 0, max-depth);
else
format-out("No open project found.\n");
end if
end function;

define command subclasses ($deft-commands)
help "Display the subclasses of a class.";
simple parameter dylan-class-name :: <string>,
help: "the dylan class",
required?: #t;
named parameter depth :: <integer>,
help: "the hierarchy depth",
required?: #f;
implementation
subclasses-for-class(dylan-class-name, if (depth) depth else 0 end);
end;