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renamed new std/pragmas.nim to std/byaddr.nim (#13844)

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* renamed new std/pragmas.nim to std/byaddr.nim

* minor code cleanup
This commit is contained in:
Andreas Rumpf 2020-04-02 11:52:31 +02:00 • committed by GitHub
commit d01245e501
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3 changed files with 8 additions and 8 deletions
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4
changelog.md
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@ -152,7 +152,7 @@ echo f
- `std/oswalkdir` was buggy, it's now deprecated and reuses `std/os` procs - `std/oswalkdir` was buggy, it's now deprecated and reuses `std/os` procs
- `net.newContext` now performs SSL Certificate checking on Linux and OSX. - `net.newContext` now performs SSL Certificate checking on Linux and OSX.
Define `nimDisableCertificateValidation` to disable it globally. Define `nimDisableCertificateValidation` to disable it globally.
- new syntax for lvalue references: `var b {.byaddr.} = expr` enabled by `import pragmas` - new syntax for lvalue references: `var b {.byaddr.} = expr` enabled by `import std/byaddr`
- new module `std/stackframes`, in particular `setFrameMsg` which enables - new module `std/stackframes`, in particular `setFrameMsg` which enables
custom runtime annotation of stackframes, see #13351 for examples. Turn on/off via custom runtime annotation of stackframes, see #13351 for examples. Turn on/off via
`--stackTraceMsgs:on/off` `--stackTraceMsgs:on/off`
@ -166,7 +166,7 @@ echo f
of `=destroy` and `copyMem` to move objects efficiently. of `=destroy` and `copyMem` to move objects efficiently.
- `var a {.foo.}: MyType = expr` now lowers to `foo(a, MyType, expr)` for non builtin pragmas, - `var a {.foo.}: MyType = expr` now lowers to `foo(a, MyType, expr)` for non builtin pragmas,
enabling things like lvalue references, see `pragmas.byaddr` enabling things like lvalue references, see `byaddr.byaddr`
- `macro pragmas` can now be used in type sections. - `macro pragmas` can now be used in type sections.

10
lib/std/pragmas.nim → lib/std/byaddr.nim
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@ -1,9 +1,9 @@
# see `semLowerLetVarCustomPragma` for compiler support that enables these # see `semLowerLetVarCustomPragma` for compiler support that enables these
# lowerings # lowerings
template byaddr*(lhs, typ, expr) = template byaddr*(lhs, typ, ex) =
## Allows a syntax for lvalue reference, exact analog to ## Allows a syntax for lvalue reference, exact analog to
## `auto& a = expr;` in C++ ## `auto& a = ex;` in C++
runnableExamples: runnableExamples:
var s = @[10,11,12] var s = @[10,11,12]
var a {.byaddr.} = s[0] var a {.byaddr.} = s[0]
@ -12,8 +12,8 @@ template byaddr*(lhs, typ, expr) =
doAssert a is int doAssert a is int
var b {.byaddr.}: int = s[0] var b {.byaddr.}: int = s[0]
doAssert a.addr == b.addr doAssert a.addr == b.addr
when typ is type(nil): when typ is typeof(nil):
let tmp = addr(expr) let tmp = addr(ex)
else: else:
let tmp: ptr typ = addr(expr) let tmp: ptr typ = addr(ex)
template lhs: untyped = tmp[] template lhs: untyped = tmp[]

2
tests/stdlib/tpragmas.nim → tests/stdlib/tbyaddr.nim
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@ -1,4 +1,4 @@
import std/pragmas import std/byaddr
block: block:
var s = @[10,11,12] var s = @[10,11,12]