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authorDenis Bitouzé <dbitouze@wanadoo.fr>2021-02-25 18:23:07 +0000
committerDenis Bitouzé <dbitouze@wanadoo.fr>2021-02-25 18:23:07 +0000
commitc6101f91d071883b48b1b4b51e5eba0f36d9a78d (patch)
tree1bf7f5a881d7a4f5c5bf59d0b2821943dd822372 /Build/source/utils/asymptote/virtualfieldaccess.h
parent07ee7222e389b0777456b427a55c22d0e6ffd267 (diff)
French translation for tlmgr updated
git-svn-id: svn://tug.org/texlive/trunk@57912 c570f23f-e606-0410-a88d-b1316a301751
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-/*****
- * virtualfieldaccess.h
- * Andy Hammerlindl 2009/07/23
- *
- * Implements the access subclass used to read and write virtual fields.
- *****/
-
-#include "access.h"
-
-namespace trans {
-// In code such as
-// pair z; write(z.x);
-// to evaluate the expression z.x, first z is pushed onto the stack, then as
-// it is not a record, instead of accessing its field in the usual way for a
-// record, a builtin function is called which pops z off the stack and
-// replaces it with z.x. virtualFieldAccess provides the access for the
-// virtualField 'x', and 'getter' is the access to the builtin function which
-// replaces z with z.x.
-//
-// If the virtual field z.x were mutable, then setter would access a builtin
-// function, which pops a real number and then z off of the stack, sets the
-// z.x to that new value, and puts the value back on the stack. In this case,
-// pairs are immutable, but other virtual fields may not be.
-//
-// Some virtual fields are functions, such as a.push for an array a. In rare
-// cases, code such as
-// void f(int) = a.push;
-// requires an object representing a.push, and so a getter for the field must
-// be provided. Most of the time, however, these fields are just called.
-// As an optimization, a caller access can be provided. If this access is
-// given, then a call to the virtualFieldAccess just translates into a call to
-// caller.
-class virtualFieldAccess : public access {
- access *getter;
- access *setter;
- access *caller;
-
-public:
- virtualFieldAccess(access *getter,
- access *setter = 0,
- access *caller = 0)
- : getter(getter), setter(setter) {}
-
- virtualFieldAccess(vm::bltin getter,
- vm::bltin setter = 0,
- vm::bltin caller = 0)
- : getter(new bltinAccess(getter)),
- setter(setter ? new bltinAccess(setter) : 0),
- caller(caller ? new bltinAccess(caller) : 0) {}
-
- void encode(action act, position pos, coder &e);
- void encode(action act, position pos, coder &e, frame *);
-
- // Attempting to WRITE a read-only field will give an error, but if the
- // error is caught at a higher level, a better error message (including the
- // name of the field) can be given. This function allows such handling.
- bool readonly() {
- return (bool)setter;
- }
-};
-
-} // namespace trans