diff options
Diffstat (limited to 'tests/manyloc/keineschweine/dependencies/genpacket/macro_dsl.nim')
-rw-r--r-- | tests/manyloc/keineschweine/dependencies/genpacket/macro_dsl.nim | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/tests/manyloc/keineschweine/dependencies/genpacket/macro_dsl.nim b/tests/manyloc/keineschweine/dependencies/genpacket/macro_dsl.nim new file mode 100644 index 000000000..3341f42c2 --- /dev/null +++ b/tests/manyloc/keineschweine/dependencies/genpacket/macro_dsl.nim @@ -0,0 +1,64 @@ +import macros + +#Inline macro.add() to allow for easier nesting +proc und*(a: NimNode; b: NimNode): NimNode {.compileTime.} = + a.add(b) + result = a +proc und*(a: NimNode; b: varargs[NimNode]): NimNode {.compileTime.} = + a.add(b) + result = a + +proc `^`*(a: string): NimNode {.compileTime.} = + ## new ident node + result = newIdentNode(a) +proc `[]`*(a, b: NimNode): NimNode {.compileTime.} = + ## new bracket expression: node[node] not to be confused with node[indx] + result = newNimNode(nnkBracketExpr).und(a, b) +proc `:=`*(left, right: NimNode): NimNode {.compileTime.} = + ## new Asgn node: left = right + result = newNimNode(nnkAsgn).und(left, right) + +proc lit*(a: string): NimNode {.compileTime.} = + result = newStrLitNode(a) +proc lit*(a: int): NimNode {.compileTime.} = + result = newIntLitNode(a) +proc lit*(a: float): NimNode {.compileTime.} = + result = newFloatLitNode(a) +proc lit*(a: char): NimNode {.compileTime.} = + result = newNimNode(nnkCharLit) + result.intval = a.ord + +proc emptyNode*(): NimNode {.compileTime.} = + result = newNimNode(nnkEmpty) + +proc dot*(left, right: NimNode): NimNode {.compileTime.} = + result = newNimNode(nnkDotExpr).und(left, right) +proc prefix*(a: string, b: NimNode): NimNode {.compileTime.} = + result = newNimNode(nnkPrefix).und(newIdentNode(a), b) + +proc quoted2ident*(a: NimNode): NimNode {.compileTime.} = + if a.kind != nnkAccQuoted: + return a + var pname = "" + for piece in 0..a.len - 1: + pname.add($a[piece].ident) + result = ^pname + + +macro `?`(a: untyped): untyped = + ## Character literal ?A #=> 'A' + result = ($a[1].ident)[0].lit +## echo(?F,?a,?t,?t,?y) + +when false: + macro foo(x: untyped) = + result = newNimNode(nnkStmtList) + result.add(newNimNode(nnkCall).und(!!"echo", "Hello thar".lit)) + result.add(newCall("echo", lit("3 * 45 = "), (3.lit.infix("*", 45.lit)))) + let stmtlist = x[1] + for i in countdown(len(stmtlist)-1, 0): + result.add(stmtlist[i]) + foo: + echo y, " * 2 = ", y * 2 + let y = 320 + |