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import std/genasts
import std/macros
# Using a enum instead of, say, int, to make apparent potential bugs related to
# forgetting converting to NimNode via newLit, see bug #9607
type Foo* = enum kfoo0, kfoo1, kfoo2, kfoo3, kfoo4
proc myLocalPriv(): auto = kfoo1
proc myLocalPriv2(): auto = kfoo1
macro bindme2*(): untyped =
genAst: myLocalPriv()
macro bindme3*(): untyped =
## myLocalPriv must be captured explicitly
genAstOpt({kDirtyTemplate}, myLocalPriv): myLocalPriv()
macro bindme4*(): untyped =
## calling this won't compile because `myLocalPriv` isn't captured
genAstOpt({kDirtyTemplate}): myLocalPriv()
macro bindme5UseExpose*(): untyped =
genAst: myLocalPriv2()
macro bindme5UseExposeFalse*(): untyped =
genAstOpt({kDirtyTemplate}): myLocalPriv2()
# example from bug #7889
from std/streams import newStringStream, readData, writeData
macro bindme6UseExpose*(): untyped =
genAst:
var tst = "sometext"
var ss = newStringStream("anothertext")
when defined(gcArc) or defined(gcOrc):
prepareMutation(tst)
writeData(ss, tst[0].addr, 2)
discard readData(ss, tst[0].addr, 2)
macro bindme6UseExposeFalse*(): untyped =
## with `kDirtyTemplate`, requires passing all referenced symbols
## which can be tedious
genAstOpt({kDirtyTemplate}, newStringStream, writeData, readData):
var tst = "sometext"
var ss = newStringStream("anothertext")
when defined(gcArc) or defined(gcOrc):
prepareMutation(tst)
writeData(ss, tst[0].addr, 2)
discard readData(ss, tst[0].addr, 2)
proc locafun1(): auto = "in locafun1"
proc locafun2(): auto = "in locafun2"
# locafun3 in caller scope only
macro mixinExample*(): untyped =
genAst:
mixin locafun1
(locafun1(), locafun2(), locafun3())
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