8000 bpo-33211: Change line number of decorated nodes back to def by emmatyping · Pull Request #6460 · python/cpython · GitHub
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bpo-33211: Change line number of decorated nodes back to def #6460

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bpo-33211: Change line number of decorated nodes back to def #6460

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b60b6a6
Change line number of decorated nodes back to def
emmatyping Apr 12, 2018
ae578b0
Whitespace fixes
emmatyping Apr 12, 2018
191bd38
Fix test_dis
emmatyping Apr 12, 2018
da42832
Change fistlineno of decorated nodes in the compiler
emmatyping Apr 12, 2018
649506c
Remove unused var
emmatyping Apr 12, 2018
29b0d60
Fix indentation bug
emmatyping Apr 12, 2018
68b2228
Run patcheck
emmatyping Apr 13, 2018
09d8ab2
Merge remote tracking branch into deflineno
emmatyping Apr 22, 2018
df9fbe2
Change tests back to original state
emmatyping Apr 23, 2018
9840f84
Fix line number in compiler
emmatyping Apr 23, 2018
0842c20
Use unreachable macro
emmatyping Apr 23, 2018
7f4fcdf
Fix silly indentation mistake
emmatyping Apr 23, 2018
e4e7f1a
Test ast line numbers for decorated nodes
emmatyping Apr 24, 2018
a8e747d
Fix true order tests for decorators
emmatyping Apr 24, 2018
3df5862
Fix bad indentation
emmatyping Apr 24, 2018
44a3cd9
Respond to review
emmatyping Apr 24, 2018
afd3b7e
Fix regression with inner decorated nodes
emmatyping Apr 24, 2018
bdc9942
Remove redundant line number setting
emmatyping May 7, 2018
914d0a0
Fix style in compile.c
emmatyping May 7, 2018
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Change line number of decorated nodes back to def
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@emmatyping
emmatyping committed Apr 12, 2018
commit b60b6a67290c1d44e3eb572e34116ebbe9c35a0d
2 changes: 2 additions & 0 deletions Misc/NEWS.d/next/Core and Builtins/2018-04-12-14-48-55.bpo-33211.i-395-.rst
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Original file line number Diff line number Diff line change
@@ -0,0 +1,2 @@
Change the line number of decorated defs back to the def or class token, not
the first decorator.
13 changes: 3 additions & 10 deletions Python/ast.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1686,19 +1686,12 @@ ast_for_decorated(struct compiling *c, const node *n)
TYPE(CHILD(n, 1)) == classdef);

if (TYPE(CHILD(n, 1)) == funcdef) {
thing = ast_for_funcdef(c, CHILD(n, 1), decorator_seq);
return ast_for_funcdef(c, CHILD(n, 1), decorator_seq);
} else if (TYPE(CHILD(n, 1)) == classdef) {
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Actually now you can remove all elses.

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You'd think so, sadly MSVC warns that not all code paths return if there isn't an else.

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Even with Py_UNREACHABLE()?

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No, with the Py_UNREACHABLE() it is happy. Do you want something like this?

    if (TYPE(CHILD(n, 1)) == funcdef) {
        return ast_for_funcdef(c, CHILD(n, 1), decorator_seq);
    } else if (TYPE(CHILD(n, 1)) == classdef) {
        return ast_for_classdef(c, CHILD(n, 1), decorator_seq);
    } else if (TYPE(CHILD(n, 1)) == async_funcdef) {
        return ast_for_async_funcdef(c, CHILD(n, 1), decorator_seq);
    }
    Py_UNREACHABLE();

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I suggest to remove other elses too.

thing = ast_for_classdef(c, CHILD(n, 1), decorator_seq);
return ast_for_classdef(c, CHILD(n, 1), decorator_seq);
} else if (TYPE(CHILD(n, 1)) == async_funcdef) {
thing = ast_for_async_funcdef(c, CHILD(n, 1), decorator_seq);
return ast_for_async_funcdef(c, CHILD(n, 1), decorator_seq);
}
/* we count the decorators in when talking about the class' or
* function's line number */
if (thing) {
thing->lineno = LINENO(n);
thing->col_offset = n->n_col_offset;
}
return thing;
}

static expr_ty
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