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In Rust, 'obj.f()' is a method call -- but '(obj.f)()' is a call of a
function-valued field 'f' in 'obj'. The Rust parser in gdb currently
gets this wrong. This is PR rust/24082.
The expression and Rust parser rewrites made this simple to fix --
simply wrapping a parenthesized expression in a new operation handles
it. This patch has a slight hack because I didn't want to introduce a
new exp_opcode enumeration constant just for this. IMO this doesn't
matter, since we should work toward removing dependencies on these
opcodes anyway; but let me know what you think of this.
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=24082
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A few Rust operations do a bit of work in their 'evaluate' functions
and then call another function -- but are also the only caller. This
patch simplifies this code by removing the extra layer.
Tested on x86-64 Fedora 34. I'm checking this in.
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This commit brings all the changes made by running gdb/copyright.py
as per GDB's Start of New Year Procedure.
For the avoidance of doubt, all changes in this commits were
performed by the script.
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This adds the special code needed to handle the Rust function call
operation.
gdb/ChangeLog
2021-03-08 Tom Tromey <tom@tromey.com>
* rust-lang.c (rust_structop::evaluate_funcall): New method.
* rust-exp.h (class rust_structop) <evaluate_funcall>: Declare
method.
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This adds class rust_aggregate_operation, which implements
OP_AGGREGATE for Rust.
gdb/ChangeLog
2021-03-08 Tom Tromey <tom@tromey.com>
* rust-lang.c (rust_aggregate_operation::evaluate): New method.
* rust-exp.h (class rust_aggregate_operation): New.
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This implements the field operations STRUCTOP_STRUCT and
STRUCTOP_ANONYMOUS, for Rust.
gdb/ChangeLog
2021-03-08 Tom Tromey <tom@tromey.com>
* rust-lang.c (eval_op_rust_struct_anon, eval_op_rust_structop):
No longer static.
* rust-exp.h (class rust_struct_anon): New.
(class rust_structop): New.
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This adds class rust_range_operation, which implements OP_RANGE.
gdb/ChangeLog
2021-03-08 Tom Tromey <tom@tromey.com>
* rust-lang.c (rust_range): No longer static.
* rust-exp.h (class rust_range_operation): New.
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This adds class rust_subscript_operation, which implements
BINOP_SUBSCRIPT for Rust.
gdb/ChangeLog
2021-03-08 Tom Tromey <tom@tromey.com>
* rust-lang.c (rust_subscript): No longer static.
* rust-exp.h (class rust_subscript_operation): New.
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This adds class rust_unop_ind_operation, which implements UNOP_IND for
Rust. Rust requires a special case here to handle trait objects.
gdb/ChangeLog
2021-03-08 Tom Tromey <tom@tromey.com>
* rust-lang.c (eval_op_rust_ind): No longer static. Add "opcode"
parameter.
(rust_evaluate_subexp): Update.
* rust-exp.h (class rust_unop_ind_operation): New.
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This implements some straightforward Rust operations, using existing
template classes.
gdb/ChangeLog
2021-03-08 Tom Tromey <tom@tromey.com>
* rust-lang.c (eval_op_rust_complement, eval_op_rust_array): No
longer static. Add "opcode" parameter.
(rust_evaluate_subexp): Update.
* rust-exp.h: New file.
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