dev-util/ccls: add LLVM 14 patches; use llvm.eclass

Signed-off-by: Sam James <sam@gentoo.org>

3 files changed, 203 insertions, 4 deletions

diff --git a/dev-util/ccls/ccls-0.20210330-r1.ebuild b/dev-util/ccls/ccls-0.20210330-r1.ebuild
new file mode 100644
index 000000000000..f2069853b3f4
--- /dev/null
+++ b/dev-util/ccls/ccls-0.20210330-r1.ebuild
@@ -0,0 +1,51 @@
+# Copyright 2020-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+EGIT_REPO_URI="https://github.com/MaskRay/${PN}"
+
+if [[ ${PV} = 9999* ]]; then
+	GIT_ECLASS="git-r3"
+	LLVM_MAX_SLOT=9999
+else
+	LLVM_MAX_SLOT=14
+fi
+
+inherit cmake llvm ${GIT_ECLASS}
+
+DESCRIPTION="C/C++/ObjC language server"
+HOMEPAGE="https://github.com/MaskRay/ccls"
+
+if [[ ${PV} == *9999 ]] ; then
+	SRC_URI=""
+else
+	SRC_URI="https://github.com/MaskRay/${PN}/archive/${PV}.tar.gz -> ${P}.tar.gz"
+	KEYWORDS="~amd64"
+fi
+
+LICENSE="Apache-2.0"
+SLOT="0"
+IUSE=""
+
+# We only depend on Clang because of a quirk in how dependencies work
+# See comment in llvm.eclass docs
+DEPEND="
+	dev-libs/rapidjson
+	<sys-devel/clang-$((${LLVM_MAX_SLOT} + 1)):=
+"
+RDEPEND="${DEPEND}"
+
+PATCHES=(
+	"${FILESDIR}"/${P}-llvm-cmake.patch
+	"${FILESDIR}"/${P}-llvm14.patch
+)
+
+src_configure() {
+	local mycmakeargs=(
+		-DCCLS_VERSION=${PV}
+		-DUSE_SYSTEM_RAPIDJSON=ON
+		-DCLANG_LINK_CLANG_DYLIB=1
+	)
+	cmake_src_configure
+}
diff --git a/dev-util/ccls/ccls-9999.ebuild b/dev-util/ccls/ccls-9999.ebuild
index 377cc36c8068..f2069853b3f4 100644
--- a/dev-util/ccls/ccls-9999.ebuild
+++ b/dev-util/ccls/ccls-9999.ebuild
@@ -1,4 +1,4 @@
-# Copyright 2020 Gentoo Authors
+# Copyright 2020-2022 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=7
@@ -7,9 +7,12 @@ EGIT_REPO_URI="https://github.com/MaskRay/${PN}"
 
 if [[ ${PV} = 9999* ]]; then
 	GIT_ECLASS="git-r3"
+	LLVM_MAX_SLOT=9999
+else
+	LLVM_MAX_SLOT=14
 fi
 
-inherit cmake ${GIT_ECLASS}
+inherit cmake llvm ${GIT_ECLASS}
 
 DESCRIPTION="C/C++/ObjC language server"
 HOMEPAGE="https://github.com/MaskRay/ccls"
@@ -25,13 +28,19 @@ LICENSE="Apache-2.0"
 SLOT="0"
 IUSE=""
 
+# We only depend on Clang because of a quirk in how dependencies work
+# See comment in llvm.eclass docs
 DEPEND="
 	dev-libs/rapidjson
-	sys-devel/clang:=
-	sys-devel/llvm:=
+	<sys-devel/clang-$((${LLVM_MAX_SLOT} + 1)):=
 "
 RDEPEND="${DEPEND}"
 
+PATCHES=(
+	"${FILESDIR}"/${P}-llvm-cmake.patch
+	"${FILESDIR}"/${P}-llvm14.patch
+)
+
 src_configure() {
 	local mycmakeargs=(
 		-DCCLS_VERSION=${PV}
diff --git a/dev-util/ccls/files/ccls-0.20210330-llvm14.patch b/dev-util/ccls/files/ccls-0.20210330-llvm14.patch
new file mode 100644
index 000000000000..79bf0f124422
--- /dev/null
+++ b/dev-util/ccls/files/ccls-0.20210330-llvm14.patch
@@ -0,0 +1,139 @@
+https://github.com/MaskRay/ccls/commit/3ce756e39ae48204f016a58684652ad62b4dd9f9.patch
+https://github.com/MaskRay/ccls/commit/8422f0a522b6fbcb4412a8ec73d80b4acbc7e00f.patch
+https://github.com/MaskRay/ccls/commit/790daca4b2d9d5873623fee86283cd61212df674.patch
+
+From: Fangrui Song <i@maskray.me>
+Date: Thu, 23 Sep 2021 13:36:01 -0700
+Subject: [PATCH] Adaopt llvmorg-14-init-3863-g601102d282d5: refactor
+ clang::isIdentifierBody
+
+---
+ src/clang_tu.hh      | 4 ++++
+ src/indexer.cc       | 6 +++---
+ src/working_files.cc | 9 ++++++---
+ 3 files changed, 13 insertions(+), 6 deletions(-)
+
+diff --git a/src/clang_tu.hh b/src/clang_tu.hh
+index b37950926..7dbfc4a88 100644
+--- a/src/clang_tu.hh
++++ b/src/clang_tu.hh
+@@ -17,6 +17,10 @@ namespace vfs = clang::vfs;
+ }
+ #endif
+ 
++#if LLVM_VERSION_MAJOR < 14 // llvmorg-14-init-3863-g601102d282d5
++#define isAsciiIdentifierContinue isIdentifierBody
++#endif
++
+ namespace ccls {
+ std::string pathFromFileEntry(const clang::FileEntry &file);
+ 
+diff --git a/src/indexer.cc b/src/indexer.cc
+index 89d78959e..644c0ccbb 100644
+--- a/src/indexer.cc
++++ b/src/indexer.cc
+@@ -527,8 +527,8 @@ class IndexDataConsumer : public index::IndexDataConsumer {
+     auto i = name.find(short_name);
+     if (short_name.size())
+       while (i != std::string::npos &&
+-             ((i && isIdentifierBody(name[i - 1])) ||
+-              isIdentifierBody(name[i + short_name.size()])))
++             ((i && isAsciiIdentifierContinue(name[i - 1])) ||
++              isAsciiIdentifierContinue(name[i + short_name.size()])))
+         i = name.find(short_name, i + short_name.size());
+     if (i == std::string::npos) {
+       // e.g. operator type-parameter-1
+@@ -552,7 +552,7 @@ class IndexDataConsumer : public index::IndexDataConsumer {
+         paren++;
+       else if (name[i - 1] == '(')
+         paren--;
+-      else if (!(paren > 0 || isIdentifierBody(name[i - 1]) ||
++      else if (!(paren > 0 || isAsciiIdentifierContinue(name[i - 1]) ||
+                  name[i - 1] == ':'))
+         break;
+     }
+diff --git a/src/working_files.cc b/src/working_files.cc
+index f80f21053..4904388be 100644
+--- a/src/working_files.cc
++++ b/src/working_files.cc
+@@ -342,7 +342,10 @@ std::optional<int> WorkingFile::getIndexPosFromBufferPos(int line, int *column,
+ Position WorkingFile::getCompletionPosition(Position pos, std::string *filter) const {
+   int start = getOffsetForPosition(pos, buffer_content);
+   int i = start;
+-  while (i > 0 && isIdentifierBody(buffer_content[i - 1]))
++#if LLVM_VERSION_MAJOR < 14 // llvmorg-14-init-3863-g601102d282d5
++#define isAsciiIdentifierContinue isIdentifierBody
++#endif
++  while (i > 0 && isAsciiIdentifierContinue(buffer_content[i - 1]))
+     --i;
+   *filter = buffer_content.substr(i, start - i);
+   return getPositionForOffset(buffer_content, i);
+@@ -455,10 +458,10 @@ std::string_view lexIdentifierAroundPos(Position position,
+     c = content[start - 1];
+     if (c == ':' && start > 1 && content[start - 2] == ':')
+       start--;
+-    else if (!isIdentifierBody(c))
++    else if (!isAsciiIdentifierContinue(c))
+       break;
+   }
+-  for (; end < content.size() && isIdentifierBody(content[end]); end++)
++  for (; end < content.size() && isAsciiIdentifierContinue(content[end]); end++)
+     ;
+ 
+   return content.substr(start, end - start);
+
+
+From: Fangrui Song <i@maskray.me>
+Date: Sun, 9 Jan 2022 12:25:07 -0800
+Subject: [PATCH] Adapt llvmorg-14-init-13600-g92417eaf3329: braced constructor
+ call
+
+---
+ src/messages/textDocument_signatureHelp.cc | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+diff --git a/src/messages/textDocument_signatureHelp.cc b/src/messages/textDocument_signatureHelp.cc
+index 8e8a7277..4192272a 100644
+--- a/src/messages/textDocument_signatureHelp.cc
++++ b/src/messages/textDocument_signatureHelp.cc
+@@ -80,6 +80,10 @@ class SignatureHelpConsumer : public CodeCompleteConsumer {
+ #if LLVM_VERSION_MAJOR >= 8
+                                  ,
+                                  SourceLocation openParLoc
++#endif
++#if LLVM_VERSION_MAJOR >= 14
++                                 ,
++                                 bool braced
+ #endif
+                                  ) override {
+     ls_sighelp.activeParameter = (int)currentArg;
+@@ -93,7 +97,11 @@ class SignatureHelpConsumer : public CodeCompleteConsumer {
+           cand = OverloadCandidate(pattern);
+ 
+       const auto *ccs =
++#if LLVM_VERSION_MAJOR >= 14
++          cand.CreateSignatureString(currentArg, s, *alloc, cCTUInfo, true, braced);
++#else
+           cand.CreateSignatureString(currentArg, s, *alloc, cCTUInfo, true);
++#endif
+ 
+       const char *ret_type = nullptr;
+       SignatureInformation &ls_sig = ls_sighelp.signatures.emplace_back();
+
+
+From: Fangrui Song <i@maskray.me>
+Date: Sun, 30 Jan 2022 11:17:32 -0800
+Subject: [PATCH] query: include llvm/ADT/STLExtras.h
+
+The header is no longer transitively included in 2022-01.
+--- a/src/query.cc
++++ b/src/query.cc
+@@ -9,6 +9,8 @@
+ 
+ #include <rapidjson/document.h>
+ 
++#include <llvm/ADT/STLExtras.h>
++
+ #include <assert.h>
+ #include <functional>
+ #include <limits.h>