Update Capnp (#4713)

* feat(capnp): update queries from upstream changes

* test: add tests for capnp

* fix indent queries

* ci: fix capnp indent tests

---------

Co-authored-by: Pham Huy Hoang <hoangtun0810@gmail.com>

2 files changed, 1087 insertions, 0 deletions

diff --git a/tests/indent/capnp/test.capnp b/tests/indent/capnp/test.capnp
new file mode 100644
index 000000000..dd2322382
--- /dev/null
+++ b/tests/indent/capnp/test.capnp
@@ -0,0 +1,1057 @@
+# Copyright (c) 2013-2014 Sandstorm Development Group, Inc. and contributors
+# Licensed under the MIT License:
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+
+@0xd508eebdc2dc42b8;
+
+using Cxx = import "c++.capnp";
+
+# Use a namespace likely to cause trouble if the generated code doesn't use fully-qualified
+# names for stuff in the capnproto namespace.
+$Cxx.namespace("capnproto_test::capnp::test");
+
+enum TestEnum {
+  foo @0;
+  bar @1;
+  baz @2;
+  qux @3;
+  quux @4;
+  corge @5;
+  grault @6;
+  garply @7;
+}
+
+struct TestAllTypes {
+  voidField      @0  : Void;
+  boolField      @1  : Bool;
+  int8Field      @2  : Int8;
+  int16Field     @3  : Int16;
+  int32Field     @4  : Int32;
+  int64Field     @5  : Int64;
+  uInt8Field     @6  : UInt8;
+  uInt16Field    @7  : UInt16;
+  uInt32Field    @8  : UInt32;
+  uInt64Field    @9  : UInt64;
+  float32Field   @10 : Float32;
+  float64Field   @11 : Float64;
+  textField      @12 : Text;
+  dataField      @13 : Data;
+  structField    @14 : TestAllTypes;
+  enumField      @15 : TestEnum;
+  interfaceField @16 : Void;  # TODO
+
+  voidList      @17 : List(Void);
+  boolList      @18 : List(Bool);
+  int8List      @19 : List(Int8);
+  int16List     @20 : List(Int16);
+  int32List     @21 : List(Int32);
+  int64List     @22 : List(Int64);
+  uInt8List     @23 : List(UInt8);
+  uInt16List    @24 : List(UInt16);
+  uInt32List    @25 : List(UInt32);
+  uInt64List    @26 : List(UInt64);
+  float32List   @27 : List(Float32);
+  float64List   @28 : List(Float64);
+  textList      @29 : List(Text);
+  dataList      @30 : List(Data);
+  structList    @31 : List(TestAllTypes);
+  enumList      @32 : List(TestEnum);
+  interfaceList @33 : List(Void);  # TODO
+}
+
+struct TestDefaults {
+  voidField      @0  : Void    = void;
+  boolField      @1  : Bool    = true;
+  int8Field      @2  : Int8    = -123;
+  int16Field     @3  : Int16   = -12345;
+  int32Field     @4  : Int32   = -12345678;
+  int64Field     @5  : Int64   = -123456789012345;
+  uInt8Field     @6  : UInt8   = 234;
+  uInt16Field    @7  : UInt16  = 45678;
+  uInt32Field    @8  : UInt32  = 3456789012;
+  uInt64Field    @9  : UInt64  = 12345678901234567890;
+  float32Field   @10 : Float32 = 1234.5;
+  float64Field   @11 : Float64 = -123e45;
+  textField      @12 : Text    = "foo";
+  dataField      @13 : Data    = 0x"62 61 72"; # "bar"
+  structField    @14 : TestAllTypes = (
+    voidField      = void,
+    boolField      = true,
+    int8Field      = -12,
+    int16Field     = 3456,
+    int32Field     = -78901234,
+    int64Field     = 56789012345678,
+    uInt8Field     = 90,
+    uInt16Field    = 1234,
+    uInt32Field    = 56789012,
+    uInt64Field    = 345678901234567890,
+    float32Field   = -1.25e-10,
+    float64Field   = 345,
+    textField      = "baz",
+    dataField      = "qux",
+    structField    = (
+      textField = "nested",
+      structField = (textField = "really nested")),
+    enumField      = baz,
+    # interfaceField can't have a default
+
+    voidList      = [void, void, void],
+    boolList      = [false, true, false, true, true],
+    int8List      = [12, -34, -0x80, 0x7f],
+    int16List     = [1234, -5678, -0x8000, 0x7fff],
+    int32List     = [12345678, -90123456, -0x80000000, 0x7fffffff],
+    int64List     = [
+      123456789012345, -678901234567890, 
+      -0x8000000000000000, 0x7fffffffffffffff],
+    uInt8List     = [12, 34, 0, 0xff],
+    uInt16List    = [1234, 5678, 0, 0xffff],
+    uInt32List    = [12345678, 90123456, 0, 0xffffffff],
+    uInt64List    = [123456789012345, 678901234567890, 0, 0xffffffffffffffff],
+    float32List   = [0, 1234567, 1e37, -1e37, 1e-37, -1e-37],
+    float64List   = [0, 123456789012345, 1e306, -1e306, 1e-306, -1e-306],
+    textList      = ["quux", "corge", "grault"],
+    dataList      = ["garply", "waldo", "fred"],
+    structList    = [
+      (textField = "x " "structlist"
+                    " 1"),
+      (textField = "x structlist 2"),
+      (textField = "x structlist 3")],
+    enumList      = [qux, bar, grault]
+    # interfaceList can't have a default
+  );
+  enumField      @15 : TestEnum = corge;
+  interfaceField @16 : Void;  # TODO
+
+  voidList      @17 : List(Void)    = [void, void, void, void, void, void];
+  boolList      @18 : List(Bool)    = [true, false, false, true];
+  int8List      @19 : List(Int8)    = [111, -111];
+  int16List     @20 : List(Int16)   = [11111, -11111];
+  int32List     @21 : List(Int32)   = [111111111, -111111111];
+  int64List     @22 : List(Int64)   = [1111111111111111111, -1111111111111111111];
+  uInt8List     @23 : List(UInt8)   = [111, 222] ;
+  uInt16List    @24 : List(UInt16)  = [33333, 44444];
+  uInt32List    @25 : List(UInt32)  = [3333333333];
+  uInt64List    @26 : List(UInt64)  = [11111111111111111111];
+  float32List   @27 : List(Float32) = [5555.5, inf, -inf, nan];
+  float64List   @28 : List(Float64) = [7777.75, inf, -inf, nan];
+  textList      @29 : List(Text)    = ["plugh", "xyzzy", "thud"];
+  dataList      @30 : List(Data)    = ["oops", "exhausted", "rfc3092"];
+  structList    @31 : List(TestAllTypes) = [
+    (textField = "structlist 1"),
+    (textField = "structlist 2"),
+    (textField = "structlist 3")];
+  enumList      @32 : List(TestEnum) = [foo, garply];
+  interfaceList @33 : List(Void);  # TODO
+}
+
+struct TestAnyPointer {
+  anyPointerField @0 :AnyPointer;
+
+  # Do not add any other fields here!  
+  # Some tests rely on anyPointerField being the last pointer
+  # in the struct.
+}
+
+struct TestAnyOthers {
+  anyStructField @0 :AnyStruct;
+  anyListField @1 :AnyList;
+  capabilityField @2 :Capability;
+}
+
+struct TestOutOfOrder {
+  foo @3 :Text;
+  bar @2 :Text;
+  baz @8 :Text;
+  qux @0 :Text;
+  quux @6 :Text;
+  corge @4 :Text;
+  grault @1 :Text;
+  garply @7 :Text;
+  waldo @5 :Text;
+}
+
+struct TestUnion {
+  union0 @0! :union {
+    # Pack union 0 under ideal conditions: there is no unused padding space prior to it.
+    u0f0s0  @4: Void;
+    u0f0s1  @5: Bool;
+    u0f0s8  @6: Int8;
+    u0f0s16 @7: Int16;
+    u0f0s32 @8: Int32;
+    u0f0s64 @9: Int64;
+    u0f0sp  @10: Text;
+
+    # Pack more stuff into union0 -- should go in same space.
+    u0f1s0  @11: Void;
+    u0f1s1  @12: Bool;
+    u0f1s8  @13: Int8;
+    u0f1s16 @14: Int16;
+    u0f1s32 @15: Int32;
+    u0f1s64 @16: Int64;
+    u0f1sp  @17: Text;
+  }
+
+  # Pack one bit in order to make pathological situation for union1.
+  bit0 @18: Bool;
+
+  union1 @1! :union {
+    # Pack pathologically bad case.  Each field takes up new space.
+    u1f0s0  @19: Void;
+    u1f0s1  @20: Bool;
+    u1f1s1  @21: Bool;
+    u1f0s8  @22: Int8;
+    u1f1s8  @23: Int8;
+    u1f0s16 @24: Int16;
+    u1f1s16 @25: Int16;
+    u1f0s32 @26: Int32;
+    u1f1s32 @27: Int32;
+    u1f0s64 @28: Int64;
+    u1f1s64 @29: Int64;
+    u1f0sp  @30: Text;
+    u1f1sp  @31: Text;
+
+    # Pack more stuff into union1
+    # each should go into the same space as corresponding u1f0s*.
+    u1f2s0  @32: Void;
+    u1f2s1  @33: Bool;
+    u1f2s8  @34: Int8;
+    u1f2s16 @35: Int16;
+    u1f2s32 @36: Int32;
+    u1f2s64 @37: Int64;
+    u1f2sp  @38: Text;
+  }
+
+  # Fill in the rest of that bitfield from earlier.
+  bit2 @39: Bool;
+  bit3 @40: Bool;
+  bit4 @41: Bool;
+  bit5 @42: Bool;
+  bit6 @43: Bool;
+  bit7 @44: Bool;
+
+  # Interleave two unions to be really annoying.
+  # Also declare in reverse order to make sure 
+  # union discriminant values are sorted by field number and not by declaration order.
+  union2 @2! :union {
+    u2f0s64 @54: Int64;
+    u2f0s32 @52: Int32;
+    u2f0s16 @50: Int16;
+    u2f0s8 @47: Int8;
+    u2f0s1 @45: Bool;
+  }
+
+  union3 @3! :union {
+    u3f0s64 @55: Int64;
+    u3f0s32 @53: Int32;
+    u3f0s16 @51: Int16;
+    u3f0s8 @48: Int8;
+    u3f0s1 @46: Bool;
+  }
+
+  byte0 @49: UInt8;
+}
+
+struct TestUnnamedUnion {
+  before @0 :Text;
+
+  union {
+    foo @1 :UInt16;
+    bar @3 :UInt32;
+  }
+
+  middle @2 :UInt16;
+
+  after @4 :Text;
+}
+
+struct TestUnionInUnion {
+  # There is no reason to ever do this.
+  outer :union {
+    inner :union {
+      foo @0 :Int32;
+      bar @1 :Int32;
+    }
+    baz @2 :Int32;
+  }
+}
+
+struct TestGroups {
+  groups :union {
+    foo :group {
+      corge @0 :Int32;
+      grault @2 :Int64;
+      garply @8 :Text;
+    }
+    bar :group {
+      corge @3 :Int32;
+      grault @4 :Text;
+      garply @5 :Int64;
+    }
+    baz :group {
+      corge @1 :Int32;
+      grault @6 :Text;
+      garply @7 :Text;
+    }
+  }
+}
+
+struct TestInterleavedGroups {
+  group1 :group {
+    foo @0 :UInt32;
+    bar @2 :UInt64;
+    union {
+      qux @4 :UInt16;
+      corge :group {
+        grault @6 :UInt64;
+        garply @8 :UInt16;
+        plugh @14 :Text;
+        xyzzy @16 :Text;
+      }
+
+      fred @12 :Text;
+    }
+
+    waldo @10 :Text;
+  }
+
+  group2 :group {
+    foo @1 :UInt32;
+    bar @3 :UInt64;
+    union {
+      qux @5 :UInt16;
+      corge :group {
+        grault @7 :UInt64;
+        garply @9 :UInt16;
+        plugh @15 :Text;
+        xyzzy @17 :Text;
+      }
+
+      fred @13 :Text;
+    }
+
+    waldo @11 :Text;
+  }
+}
+
+struct TestUnionDefaults {
+  s16s8s64s8Set @0 :TestUnion =
+    (union0 = (u0f0s16 = 321), union1 = (u1f0s8 = 123), union2 = (u2f0s64 = 12345678901234567),
+     union3 = (u3f0s8 = 55));
+  s0sps1s32Set @1 :TestUnion =
+    (union0 = (u0f1s0 = void), union1 = (u1f0sp = "foo"), union2 = (u2f0s1 = true),
+     union3 = (u3f0s32 = 12345678));
+
+  unnamed1 @2 :TestUnnamedUnion = (foo = 123);
+  unnamed2 @3 :TestUnnamedUnion = (bar = 321, before = "foo", after = "bar");
+}
+
+struct TestNestedTypes {
+  enum NestedEnum {
+    foo @0;
+    bar @1;
+  }
+
+  struct NestedStruct {
+    enum NestedEnum {
+      baz @0;
+      qux @1;
+      quux @2;
+    }
+
+    outerNestedEnum @0 :TestNestedTypes.NestedEnum = bar;
+    innerNestedEnum @1 :NestedEnum = quux;
+  }
+
+  nestedStruct @0 :NestedStruct;
+
+  outerNestedEnum @1 :NestedEnum = bar;
+  innerNestedEnum @2 :NestedStruct.NestedEnum = quux;
+}
+
+struct TestUsing {
+  using OuterNestedEnum = TestNestedTypes.NestedEnum;
+  using TestNestedTypes.NestedStruct.NestedEnum;
+
+  outerNestedEnum @1 :OuterNestedEnum = bar;
+  innerNestedEnum @0 :NestedEnum = quux;
+}
+
+struct TestLists {
+  # Small structs, when encoded as list, will be encoded as primitive lists rather than struct
+  # lists, to save space.
+  struct Struct0  { f @0 :Void; }
+  struct Struct1  { f @0 :Bool; }
+  struct Struct8  { f @0 :UInt8; }
+  struct Struct16 { f @0 :UInt16; }
+  struct Struct32 { f @0 :UInt32; }
+  struct Struct64 { f @0 :UInt64; }
+  struct StructP  { f @0 :Text; }
+
+  # Versions of the above which cannot be encoded as primitive lists.
+  struct Struct0c  { f @0 :Void; pad @1 :Text; }
+  struct Struct1c  { f @0 :Bool; pad @1 :Text; }
+  struct Struct8c  { f @0 :UInt8; pad @1 :Text; }
+  struct Struct16c { f @0 :UInt16; pad @1 :Text; }
+  struct Struct32c { f @0 :UInt32; pad @1 :Text; }
+  struct Struct64c { f @0 :UInt64; pad @1 :Text; }
+  struct StructPc  { f @0 :Text; pad @1 :UInt64; }
+
+  list0  @0 :List(Struct0);
+  list1  @1 :List(Struct1);
+  list8  @2 :List(Struct8);
+  list16 @3 :List(Struct16);
+  list32 @4 :List(Struct32);
+  list64 @5 :List(Struct64);
+  listP  @6 :List(StructP);
+
+  int32ListList @7 :List(List(Int32));
+  textListList @8 :List(List(Text));
+  structListList @9 :List(List(TestAllTypes));
+}
+
+struct TestFieldZeroIsBit {
+  bit @0 :Bool;
+  secondBit @1 :Bool = true;
+  thirdField @2 :UInt8 = 123;
+}
+
+struct TestListDefaults {
+  lists @0 :TestLists = (
+    list0  = [(f = void), (f = void)],
+    list1  = [(f = true), (f = false), (f = true), (f = true)],
+    list8  = [(f = 123), (f = 45)],
+    list16 = [(f = 12345), (f = 6789)],
+    list32 = [(f = 123456789), (f = 234567890)],
+    list64 = [(f = 1234567890123456), (f = 2345678901234567)],
+    listP  = [(f = "foo"), (f = "bar")],
+    int32ListList = [[1, 2, 3], [4, 5], [12341234]],
+    textListList = [["foo", "bar"], ["baz"], ["qux", "corge"]],
+    structListList = [[(int32Field = 123), (int32Field = 456)], [(int32Field = 789)]]);
+}
+
+struct TestLateUnion {
+  # Test what happens if the unions are not the first ordinals in the struct.  
+  # At one point this was broken for the dynamic API.
+
+  foo @0 :Int32;
+  bar @1 :Text;
+  baz @2 :Int16;
+
+  theUnion @3! :union {
+    qux @4 :Text;
+    corge @5 :List(Int32);
+    grault @6 :Float32;
+  }
+
+  anotherUnion @7! :union {
+    qux @8 :Text;
+    corge @9 :List(Int32);
+    grault @10 :Float32;
+  }
+}
+
+struct TestOldVersion {
+  # A subset of TestNewVersion.
+  old1 @0 :Int64;
+  old2 @1 :Text;
+  old3 @2 :TestOldVersion;
+}
+
+struct TestNewVersion {
+  # A superset of TestOldVersion.
+  old1 @0 :Int64;
+  old2 @1 :Text;
+  old3 @2 :TestNewVersion;
+  new1 @3 :Int64 = 987;
+  new2 @4 :Text = "baz";
+}
+
+struct TestOldUnionVersion {
+  union {
+    a @0 :Void;
+    b @1 :UInt64;
+  }
+}
+
+struct TestNewUnionVersion {
+  union {
+    a :union {
+      a0 @0 :Void;
+      a1 @2 :UInt64;
+    }
+    b @1 :UInt64;
+  }
+}
+
+struct TestStructUnion {
+  un @0! :union {
+    struct @1 :SomeStruct;
+    object @2 :TestAnyPointer;
+  }
+
+  struct SomeStruct {
+    someText @0 :Text;
+    moreText @1 :Text;
+  }
+}
+
+struct TestPrintInlineStructs {
+  someText @0 :Text;
+
+  structList @1 :List(InlineStruct);
+  struct InlineStruct {
+    int32Field @0 :Int32;
+    textField @1 :Text;
+  }
+}
+
+struct TestWholeFloatDefault {
+  # At one point, these failed to compile in C++ because it would produce literals like "123f",
+  # which is not valid; it needs to be "123.0f".
+  field @0 :Float32 = 123;
+  bigField @1 :Float32 = 2e30;
+  const constant :Float32 = 456;
+  const bigConstant :Float32 = 4e30;
+}
+
+struct TestGenerics(Foo, Bar) {
+  foo @0 :Foo;
+  rev @1 :TestGenerics(Bar, Foo);
+
+  union {
+    uv @2:Void;
+    ug :group {
+      ugfoo @3:Int32;
+    }
+  }
+
+  list @4 :List(Inner);
+  # At one time this failed to compile with MSVC due to poor expression SFINAE support.
+
+  struct Inner {
+    foo @0 :Foo;
+    bar @1 :Bar;
+  }
+
+  struct Inner2(Baz) {
+    bar @0 :Bar;
+    baz @1 :Baz;
+    innerBound @2 :Inner;
+    innerUnbound @3 :TestGenerics.Inner;
+
+    struct DeepNest(Qux) {
+      foo @0 :Foo;
+      bar @1 :Bar;
+      baz @2 :Baz;
+      qux @3 :Qux;
+
+      interface DeepNestInterface(Quux) {
+        # At one time this failed to compile.
+        call @0 () -> ();
+      }
+    }
+  }
+
+  interface Interface(Qux) {
+    call @0 Inner2(Text) -> (qux :Qux, gen :TestGenerics(TestAllTypes, TestAnyPointer));
+  }
+
+  annotation ann(struct) :Foo;
+
+  using AliasFoo = Foo;
+  using AliasInner = Inner;
+  using AliasInner2 = Inner2;
+  using AliasInner2Text = Inner2(Text);
+  using AliasRev = TestGenerics(Bar, Foo);
+
+  struct UseAliases {
+    foo @0 :AliasFoo;
+    inner @1 :AliasInner;
+    inner2 @2 :AliasInner2;
+    inner2Bind @3 :AliasInner2(Text);
+    inner2Text @4 :AliasInner2Text;
+    revFoo @5 :AliasRev.AliasFoo;
+  }
+}
+
+struct BoxedText { text @0 :Text; }
+using BrandedAlias = TestGenerics(BoxedText, Text);
+
+struct TestGenericsWrapper(Foo, Bar) {
+  value @0 :TestGenerics(Foo, Bar);
+}
+
+struct TestGenericsWrapper2 {
+  value @0 :TestGenericsWrapper(Text, TestAllTypes);
+}
+
+interface TestImplicitMethodParams {
+  call @0 [T, U] (foo :T, bar :U) -> TestGenerics(T, U);
+}
+
+interface TestImplicitMethodParamsInGeneric(V) {
+  call @0 [T, U] (foo :T, bar :U) -> TestGenerics(T, U);
+}
+
+struct TestGenericsUnion(Foo, Bar) {
+  # At one point this failed to compile.
+
+  union {
+    foo @0 :Foo;
+    bar @1 :Bar;
+  }
+}
+
+struct TestUseGenerics $TestGenerics(Text, Data).ann("foo") {
+  basic @0 :TestGenerics(TestAllTypes, TestAnyPointer);
+  inner @1 :TestGenerics(TestAllTypes, TestAnyPointer).Inner;
+  inner2 @2 :TestGenerics(TestAllTypes, TestAnyPointer).Inner2(Text);
+  unspecified @3 :TestGenerics;
+  unspecifiedInner @4 :TestGenerics.Inner2(Text);
+  wrapper @8 :TestGenericsWrapper(TestAllTypes, TestAnyPointer);
+  cap @18 :TestGenerics(TestInterface, Text);
+  genericCap @19 :TestGenerics(TestAllTypes, List(UInt32)).Interface(Data);
+
+  default @5 :TestGenerics(TestAllTypes, Text) =
+    (foo = (int16Field = 123), rev = (foo = "text", rev = (foo = (int16Field = 321))));
+  defaultInner @6 :TestGenerics(TestAllTypes, Text).Inner =
+    (foo = (int16Field = 123), bar = "text");
+  defaultUser @7 :TestUseGenerics = (basic = (foo = (int16Field = 123)));
+  defaultWrapper @9 :TestGenericsWrapper(Text, TestAllTypes) =
+    (value = (foo = "text", rev = (foo = (int16Field = 321))));
+  defaultWrapper2 @10 :TestGenericsWrapper2 =
+    (value = (value = (foo = "text", rev = (foo = (int16Field = 321)))));
+
+  aliasFoo @11 :TestGenerics(TestAllTypes, TestAnyPointer).AliasFoo = (int16Field = 123);
+  aliasInner @12 :TestGenerics(TestAllTypes, TestAnyPointer).AliasInner
+    = (foo = (int16Field = 123));
+  aliasInner2 @13 :TestGenerics(TestAllTypes, TestAnyPointer).AliasInner2
+    = (innerBound = (foo = (int16Field = 123)));
+  aliasInner2Bind @14 :TestGenerics(TestAllTypes, TestAnyPointer).AliasInner2(List(UInt32))
+    = (baz = [12, 34], innerBound = (foo = (int16Field = 123)));
+  aliasInner2Text @15 :TestGenerics(TestAllTypes, TestAnyPointer).AliasInner2Text
+    = (baz = "text", innerBound = (foo = (int16Field = 123)));
+  aliasRev @16 :TestGenerics(TestAnyPointer, Text).AliasRev.AliasFoo = "text";
+
+  useAliases @17 :TestGenerics(TestAllTypes, List(UInt32)).UseAliases = (
+    foo = (int16Field = 123),
+    inner = (foo = (int16Field = 123)),
+    inner2 = (innerBound = (foo = (int16Field = 123))),
+    inner2Bind = (baz = "text", innerBound = (foo = (int16Field = 123))),
+    inner2Text = (baz = "text", innerBound = (foo = (int16Field = 123))),
+    revFoo = [12, 34, 56]);
+}
+
+struct TestEmptyStruct {}
+
+struct TestConstants {
+  const voidConst      :Void    = void;
+  const boolConst      :Bool    = true;
+  const int8Const      :Int8    = -123;
+  const int16Const     :Int16   = -12345;
+  const int32Const     :Int32   = -12345678;
+  const int64Const     :Int64   = -123456789012345;
+  const uint8Const     :UInt8   = 234;
+  const uint16Const    :UInt16  = 45678;
+  const uint32Const    :UInt32  = 3456789012;
+  const uint64Const    :UInt64  = 12345678901234567890;
+  const float32Const   :Float32 = 1234.5;
+  const float64Const   :Float64 = -123e45;
+  const textConst      :Text    = "foo";
+  const dataConst      :Data    = "bar";
+  const structConst    :TestAllTypes = (
+    voidField      = void,
+    boolField      = true,
+    int8Field      = -12,
+    int16Field     = 3456,
+    int32Field     = -78901234,
+    int64Field     = 56789012345678,
+    uInt8Field     = 90,
+    uInt16Field    = 1234,
+    uInt32Field    = 56789012,
+    uInt64Field    = 345678901234567890,
+    float32Field   = -1.25e-10,
+    float64Field   = 345,
+    textField      = "baz",
+    dataField      = "qux",
+    structField    = (
+      textField = "nested",
+      structField = (textField = "really nested")),
+    enumField      = baz,
+    # interfaceField can't have a default
+
+    voidList      = [void, void, void],
+    boolList      = [false, true, false, true, true],
+    int8List      = [12, -34, -0x80, 0x7f],
+    int16List     = [1234, -5678, -0x8000, 0x7fff],
+    int32List     = [12345678, -90123456, -0x80000000, 0x7fffffff],
+    int64List     = [
+      123456789012345, 
+      -678901234567890, 
+      -0x8000000000000000, 
+      0x7fffffffffffffff],
+    uInt8List     = [12, 34, 0, 0xff],
+    uInt16List    = [1234, 5678, 0, 0xffff],
+    uInt32List    = [12345678, 90123456, 0, 0xffffffff],
+    uInt64List    = [123456789012345, 678901234567890, 0, 0xffffffffffffffff],
+    float32List   = [0, 1234567, 1e37, -1e37, 1e-37, -1e-37],
+    float64List   = [0, 123456789012345, 1e306, -1e306, 1e-306, -1e-306],
+    textList      = ["quux", "corge", "grault"],
+    dataList      = ["garply", "waldo", "fred"],
+    structList    = [
+      (textField = "x " "structlist"
+                    " 1"),
+      (textField = "x structlist 2"),
+      (textField = "x structlist 3")],
+    enumList      = [qux, bar, grault]
+    # interfaceList can't have a default
+  );
+  const enumConst      :TestEnum = corge;
+
+  const voidListConst      :List(Void)    = [void, void, void, void, void, void];
+  const boolListConst      :List(Bool)    = [true, false, false, true];
+  const int8ListConst      :List(Int8)    = [111, -111];
+  const int16ListConst     :List(Int16)   = [11111, -11111];
+  const int32ListConst     :List(Int32)   = [111111111, -111111111];
+  const int64ListConst     :List(Int64)   = [1111111111111111111, -1111111111111111111];
+  const uint8ListConst     :List(UInt8)   = [111, 222] ;
+  const uint16ListConst    :List(UInt16)  = [33333, 44444];
+  const uint32ListConst    :List(UInt32)  = [3333333333];
+  const uint64ListConst    :List(UInt64)  = [11111111111111111111];
+  const float32ListConst   :List(Float32) = [5555.5, inf, -inf, nan];
+  const float64ListConst   :List(Float64) = [7777.75, inf, -inf, nan];
+  const textListConst      :List(Text)    = ["plugh", "xyzzy", "thud"];
+  const dataListConst      :List(Data)    = ["oops", "exhausted", "rfc3092"];
+  const structListConst    :List(TestAllTypes) = [
+    (textField = "structlist 1"),
+    (textField = "structlist 2"),
+    (textField = "structlist 3")];
+  const enumListConst      :List(TestEnum) = [foo, garply];
+}
+
+const globalInt :UInt32 = 12345;
+const globalText :Text = "foobar";
+const globalStruct :TestAllTypes = (int32Field = 54321);
+const globalPrintableStruct :TestPrintInlineStructs = (someText = "foo");
+const derivedConstant :TestAllTypes = (
+  uInt32Field = .globalInt,
+  textField = TestConstants.textConst,
+  structField = TestConstants.structConst,
+  int16List = TestConstants.int16ListConst,
+  structList = TestConstants.structListConst);
+
+const genericConstant :TestGenerics(TestAllTypes, Text) =
+  (foo = (int16Field = 123), rev = (foo = "text", rev = (foo = (int16Field = 321))));
+
+const embeddedData :Data = embed "testdata/packed";
+const embeddedText :Text = embed "testdata/short.txt";
+const embeddedStruct :TestAllTypes = embed "testdata/binary";
+
+const nonAsciiText :Text = "♫ é ✓";
+
+const blockText :Text =
+  `foo bar baz
+  `"qux" `corge` 'grault'
+  "regular\"quoted\"line"
+  `garply\nwaldo\tfred\"plugh\"xyzzy\'thud
+  ;
+
+struct TestAnyPointerConstants {
+  anyKindAsStruct @0 :AnyPointer;
+  anyStructAsStruct @1 :AnyStruct;
+  anyKindAsList @2 :AnyPointer;
+  anyListAsList @3 :AnyList;
+}
+
+const anyPointerConstants :TestAnyPointerConstants = (
+  anyKindAsStruct = TestConstants.structConst,
+  anyStructAsStruct = TestConstants.structConst,
+  anyKindAsList = TestConstants.int32ListConst,
+  anyListAsList = TestConstants.int32ListConst,
+);
+
+struct TestListOfAny {
+  capList @0 :List(Capability);
+  #listList @1 :List(AnyList); 
+  # TODO(0.10): Make List(AnyList) work correctly in C++ generated code.
+}
+
+interface TestInterface {
+  foo @0 (i :UInt32, j :Bool) -> (x :Text);
+  bar @1 () -> ();
+  baz @2 (s: TestAllTypes);
+}
+
+interface TestExtends extends(TestInterface) {
+  qux @0 ();
+  corge @1 TestAllTypes -> ();
+  grault @2 () -> TestAllTypes;
+}
+
+interface TestExtends2 extends(TestExtends) {}
+
+interface TestPipeline {
+  getCap @0 (n: UInt32, inCap :TestInterface) -> (s: Text, outBox :Box);
+  testPointers @1 (cap :TestInterface, obj :AnyPointer, list :List(TestInterface)) -> ();
+  getAnyCap @2 (n: UInt32, inCap :Capability) -> (s: Text, outBox :AnyBox);
+
+  getCapPipelineOnly @3 () -> (outBox :Box);
+  # Never returns, but uses setPipeline() to make the pipeline work.
+
+  struct Box {
+    cap @0 :TestInterface;
+  }
+  struct AnyBox {
+    cap @0 :Capability;
+  }
+}
+
+interface TestCallOrder {
+  getCallSequence @0 (expected: UInt32) -> (n: UInt32);
+  # First call returns 0, next returns 1, ...
+  #
+  # The input `expected` is ignored but useful for disambiguating debug logs.
+}
+
+interface TestTailCallee $Cxx.allowCancellation {
+  struct TailResult {
+    i @0 :UInt32;
+    t @1 :Text;
+    c @2 :TestCallOrder;
+  }
+
+  foo @0 (i :Int32, t :Text) -> TailResult;
+}
+
+interface TestTailCaller {
+  foo @0 (i :Int32, callee :TestTailCallee) -> TestTailCallee.TailResult;
+}
+
+interface TestStreaming $Cxx.allowCancellation {
+  doStreamI @0 (i :UInt32) -> stream;
+  doStreamJ @1 (j :UInt32) -> stream;
+  finishStream @2 () -> (totalI :UInt32, totalJ :UInt32);
+  # Test streaming. finishStream() returns 
+  # the totals of the values streamed to the other calls.
+}
+
+interface TestHandle {}
+
+interface TestMoreStuff extends(TestCallOrder) {
+  # Catch-all type that contains lots of testing methods.
+
+  callFoo @0 (cap :TestInterface) -> (s: Text);
+  # Call `cap.foo()`, check the result, and return "bar".
+
+  callFooWhenResolved @1 (cap :TestInterface) -> (s: Text);
+  # Like callFoo but waits for `cap` to resolve first.
+
+  neverReturn @2 (cap :TestInterface) -> (capCopy :TestInterface) $Cxx.allowCancellation;
+  # Doesn't return.  You should cancel it.
+
+  hold @3 (cap :TestInterface) -> ();
+  # Returns immediately but holds on to the capability.
+
+  callHeld @4 () -> (s: Text);
+  # Calls the capability previously held using `hold` (and keeps holding it).
+
+  getHeld @5 () -> (cap :TestInterface);
+  # Returns the capability previously held using `hold` (and keeps holding it).
+
+  echo @6 (cap :TestCallOrder) -> (cap :TestCallOrder);
+  # Just returns the input cap.
+
+  expectCancel @7 (cap :TestInterface) -> () $Cxx.allowCancellation;
+  # evalLater()-loops forever, holding `cap`.  Must be canceled.
+
+  methodWithDefaults @8 (
+    a :Text, 
+    b :UInt32 = 123, 
+    c :Text = "foo"
+  ) -> (d :Text, e :Text = "bar");
+
+  methodWithNullDefault @12 (a :Text, b :TestInterface = null);
+
+  getHandle @9 () -> (handle :TestHandle);
+  # Get a new handle. Tests have an out-of-band way to check
+  # the current number of live handles, so this can be used to test garbage collection.
+
+  getNull @10 () -> (nullCap :TestMoreStuff);
+  # Always returns a null capability.
+
+  getEnormousString @11 () -> (str :Text);
+  # Attempts to return an 100MB string. Should always fail.
+
+  writeToFd @13 (fdCap1 :TestInterface, fdCap2 :TestInterface)
+             -> (fdCap3 :TestInterface, secondFdPresent :Bool);
+  # Expects fdCap1 and fdCap2 wrap socket file descriptors.
+  # Writes "foo" to the first and "bar" to the second. 
+  # Also creates a socketpair, writes "baz" to one end, and returns the other end.
+
+  throwException @14 ();
+  throwRemoteException @15 ();
+}
+
+interface TestMembrane {
+  makeThing @0 () -> (thing :Thing);
+  callPassThrough @1 (thing :Thing, tailCall :Bool) -> Result;
+  callIntercept @2 (thing :Thing, tailCall :Bool) -> Result;
+  loopback @3 (thing :Thing) -> (thing :Thing);
+
+  waitForever @4 () $Cxx.allowCancellation;
+
+  interface Thing {
+    passThrough @0 () -> Result;
+    intercept @1 () -> Result;
+  }
+
+  struct Result {
+    text @0 :Text;
+  }
+}
+
+struct TestContainMembrane {
+  cap @0 :TestMembrane.Thing;
+  list @1 :List(TestMembrane.Thing);
+}
+
+struct TestTransferCap {
+  list @0 :List(Element);
+  struct Element {
+    text @0 :Text;
+    cap @1 :TestInterface;
+  }
+}
+
+interface TestKeywordMethods {
+  delete @0 ();
+  class @1 ();
+  void @2 ();
+  return @3 ();
+}
+
+interface TestAuthenticatedBootstrap(VatId) {
+  getCallerId @0 () -> (caller :VatId);
+}
+
+struct TestSturdyRef {
+  hostId @0 :TestSturdyRefHostId;
+  objectId @1 :AnyPointer;
+}
+
+struct TestSturdyRefHostId {
+  host @0 :Text;
+}
+
+struct TestSturdyRefObjectId {
+  tag @0 :Tag;
+  enum Tag {
+    testInterface @0;
+    testExtends @1;
+    testPipeline @2;
+    testTailCallee @3;
+    testTailCaller @4;
+    testMoreStuff @5;
+  }
+}
+
+struct TestProvisionId {}
+struct TestRecipientId {}
+struct TestThirdPartyCapId {}
+struct TestJoinResult {}
+
+struct TestNameAnnotation $Cxx.name("RenamedStruct") {
+  union {
+    badFieldName @0 :Bool $Cxx.name("goodFieldName");
+    bar @1 :Int8;
+  }
+
+  enum BadlyNamedEnum $Cxx.name("RenamedEnum") {
+    foo @0;
+    bar @1;
+    baz @2 $Cxx.name("qux");
+  }
+
+  anotherBadFieldName @2 :BadlyNamedEnum $Cxx.name("anotherGoodFieldName");
+
+  struct NestedStruct $Cxx.name("RenamedNestedStruct") {
+    badNestedFieldName @0 :Bool $Cxx.name("goodNestedFieldName");
+    anotherBadNestedFieldName @1 :NestedStruct $Cxx.name("anotherGoodNestedFieldName");
+
+    enum DeeplyNestedEnum $Cxx.name("RenamedDeeplyNestedEnum") {
+      quux @0;
+      corge @1;
+      grault @2 $Cxx.name("garply");
+    }
+  }
+
+  badlyNamedUnion :union $Cxx.name("renamedUnion") {
+    badlyNamedGroup :group $Cxx.name("renamedGroup") {
+      foo @3 :Void;
+      bar @4 :Void;
+    }
+    baz @5 :NestedStruct $Cxx.name("qux");
+  }
+}
+
+interface TestNameAnnotationInterface $Cxx.name("RenamedInterface") {
+  badlyNamedMethod @0 (
+    badlyNamedParam :UInt8 $Cxx.name("renamedParam")
+  ) $Cxx.name("renamedMethod");
+}
+
+struct TestImpliedFirstField {
+  struct TextStruct {
+    text @0 :Text;
+    i @1 :UInt32 = 321;
+  }
+
+  textStruct @0 :TextStruct = "foo";
+  textStructList @1 :List(TextStruct);
+
+  intGroup :group {
+    i @2 :UInt32;
+    str @3 :Text = "corge";
+  }
+}
+
+const testImpliedFirstField :TestImpliedFirstField = (
+  textStruct = "bar",
+  textStructList = ["baz", (text = "qux", i = 123)],
+  intGroup = 123
+);
+
+struct TestCycleANoCaps {
+  foo @0 :TestCycleBNoCaps;
+}
+
+struct TestCycleBNoCaps {
+  foo @0 :List(TestCycleANoCaps);
+  bar @1 :TestAllTypes;
+}
+
+struct TestCycleAWithCaps {
+  foo @0 :TestCycleBWithCaps;
+}
+
+struct TestCycleBWithCaps {
+  foo @0 :List(TestCycleAWithCaps);
+  bar @1 :TestInterface;
+}
diff --git a/tests/indent/capnp_spec.lua b/tests/indent/capnp_spec.lua
new file mode 100644
index 000000000..7c8418b06
--- /dev/null
+++ b/tests/indent/capnp_spec.lua
@@ -0,0 +1,30 @@
+local Runner = require("tests.indent.common").Runner
+
+local run = Runner:new(it, "tests/indent/capnp", {
+  tabstop = 2,
+  shiftwidth = 2,
+  expandtab = true,
+})
+
+describe("indent Cap'n Proto:", function()
+  describe("whole file:", function()
+    run:whole_file(".", {
+      expected_failures = {},
+    })
+  end)
+
+  describe("new line:", function()
+    run:new_line("test.capnp", { on_line = 31, text = "foo @0;", indent = 2 })
+    run:new_line("test.capnp", { on_line = 96, text = "boolField      = true,", indent = 4 })
+    run:new_line("test.capnp", { on_line = 340, text = "grault @7 :UInt64;", indent = 8 })
+    run:new_line("test.capnp", {
+      on_line = 573,
+      text = "call @0 Inner2(Text) -> (qux :Qux, gen :TestGenerics(TestAllTypes, TestAnyPointer));",
+      indent = 4,
+    })
+    run:new_line("test.capnp", { on_line = 617, text = "foo @0 :Foo;", indent = 4 })
+    run:new_line("test.capnp", { on_line = 654, text = "foo = (int16Field = 123),", indent = 4 })
+    run:new_line("test.capnp", { on_line = 695, text = 'textField = "nested",', indent = 6 })
+    run:new_line("test.capnp", { on_line = 970, text = "testTailCaller @4;", indent = 4 })
+  end)
+end)