sammccall updated this revision to Diff 278716.
sammccall marked 2 inline comments as done.
sammccall added a comment.
auto
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D84009/new/
https://reviews.llvm.org/D84009
Files:
clang/include/clang/Tooling/Syntax/Tokens.h
clang/lib/Tooling/Syntax/Tokens.cpp
clang/unittests/Tooling/Syntax/TokensTest.cpp
Index: clang/unittests/Tooling/Syntax/TokensTest.cpp
===================================================================
--- clang/unittests/Tooling/Syntax/TokensTest.cpp
+++ clang/unittests/Tooling/Syntax/TokensTest.cpp
@@ -53,6 +53,7 @@
using namespace clang::syntax;
using llvm::ValueIs;
+using ::testing::_;
using ::testing::AllOf;
using ::testing::Contains;
using ::testing::ElementsAre;
@@ -755,7 +756,7 @@
EXPECT_THAT(Buffer.expandedTokens(SourceRange()), testing::IsEmpty());
}
-TEST_F(TokenBufferTest, ExpansionStartingAt) {
+TEST_F(TokenBufferTest, ExpansionsOverlapping) {
// Object-like macro expansions.
recordTokens(R"cpp(
#define FOO 3+4
@@ -763,17 +764,25 @@
int b = FOO 2;
)cpp");
- llvm::ArrayRef<syntax::Token> Foo1 = findSpelled("FOO 1").drop_back();
+ llvm::ArrayRef<syntax::Token> Foo1 = findSpelled("FOO 1");
EXPECT_THAT(
Buffer.expansionStartingAt(Foo1.data()),
- ValueIs(IsExpansion(SameRange(Foo1),
+ ValueIs(IsExpansion(SameRange(Foo1.drop_back()),
SameRange(findExpanded("3 + 4 1").drop_back()))));
+ EXPECT_THAT(
+ Buffer.expansionsAffecting(Foo1),
+ ElementsAre(IsExpansion(SameRange(Foo1.drop_back()),
+ SameRange(findExpanded("3 + 4 1").drop_back()))));
- llvm::ArrayRef<syntax::Token> Foo2 = findSpelled("FOO 2").drop_back();
+ llvm::ArrayRef<syntax::Token> Foo2 = findSpelled("FOO 2");
EXPECT_THAT(
Buffer.expansionStartingAt(Foo2.data()),
- ValueIs(IsExpansion(SameRange(Foo2),
+ ValueIs(IsExpansion(SameRange(Foo2.drop_back()),
SameRange(findExpanded("3 + 4 2").drop_back()))));
+ EXPECT_THAT(
+ Buffer.expansionsAffecting(llvm::makeArrayRef(Foo1.begin(), Foo2.end())),
+ ElementsAre(IsExpansion(SameRange(Foo1.drop_back()), _),
+ IsExpansion(SameRange(Foo2.drop_back()), _)));
// Function-like macro expansions.
recordTokens(R"cpp(
@@ -798,6 +807,11 @@
for (const auto &T : ID2.drop_front())
EXPECT_EQ(Buffer.expansionStartingAt(&T), llvm::None);
+ EXPECT_THAT(Buffer.expansionsAffecting(llvm::makeArrayRef(
+ findSpelled("1 + 2").data(), findSpelled("4").data())),
+ ElementsAre(IsExpansion(SameRange(ID1), _),
+ IsExpansion(SameRange(ID2), _)));
+
// PP directives.
recordTokens(R"cpp(
#define FOO 1
@@ -823,6 +837,11 @@
// Only the first spelled token should be found.
for (const auto &T : PragmaOnce.drop_front())
EXPECT_EQ(Buffer.expansionStartingAt(&T), llvm::None);
+
+ EXPECT_THAT(
+ Buffer.expansionsAffecting(findSpelled("FOO ; # pragma")),
+ ElementsAre(IsExpansion(SameRange(findSpelled("FOO ;").drop_back()), _),
+ IsExpansion(SameRange(PragmaOnce), _)));
}
TEST_F(TokenBufferTest, TokensToFileRange) {
Index: clang/lib/Tooling/Syntax/Tokens.cpp
===================================================================
--- clang/lib/Tooling/Syntax/Tokens.cpp
+++ clang/lib/Tooling/Syntax/Tokens.cpp
@@ -249,13 +249,7 @@
TokenBuffer::expandedForSpelled(llvm::ArrayRef<syntax::Token> Spelled) const {
if (Spelled.empty())
return {};
- assert(Spelled.front().location().isFileID());
-
- auto FID = sourceManager().getFileID(Spelled.front().location());
- auto It = Files.find(FID);
- assert(It != Files.end());
-
- const MarkedFile &File = It->second;
+ const auto &File = fileForSpelled(Spelled);
// `Spelled` must be a subrange of `File.SpelledTokens`.
assert(File.SpelledTokens.data() <= Spelled.data());
assert(&Spelled.back() <=
@@ -395,16 +389,34 @@
: LastSpelled + 1);
}
+TokenBuffer::Expansion TokenBuffer::makeExpansion(const MarkedFile &F,
+ const Mapping &M) const {
+ Expansion E;
+ E.Spelled = llvm::makeArrayRef(F.SpelledTokens.data() + M.BeginSpelled,
+ F.SpelledTokens.data() + M.EndSpelled);
+ E.Expanded = llvm::makeArrayRef(ExpandedTokens.data() + M.BeginExpanded,
+ ExpandedTokens.data() + M.EndExpanded);
+ return E;
+}
+
+const TokenBuffer::MarkedFile &
+TokenBuffer::fileForSpelled(llvm::ArrayRef<syntax::Token> Spelled) const {
+ assert(!Spelled.empty());
+ assert(Spelled.front().location().isFileID() && "not a spelled token");
+ auto FileIt = Files.find(SourceMgr->getFileID(Spelled.front().location()));
+ assert(FileIt != Files.end() && "file not tracked by token buffer");
+ const auto &File = FileIt->second;
+ assert(File.SpelledTokens.data() <= Spelled.data() &&
+ Spelled.end() <=
+ (File.SpelledTokens.data() + File.SpelledTokens.size()) &&
+ "Tokens not in spelled range");
+ return File;
+}
+
llvm::Optional<TokenBuffer::Expansion>
TokenBuffer::expansionStartingAt(const syntax::Token *Spelled) const {
assert(Spelled);
- assert(Spelled->location().isFileID() && "not a spelled token");
- auto FileIt = Files.find(SourceMgr->getFileID(Spelled->location()));
- assert(FileIt != Files.end() && "file not tracked by token buffer");
-
- auto &File = FileIt->second;
- assert(File.SpelledTokens.data() <= Spelled &&
- Spelled < (File.SpelledTokens.data() + File.SpelledTokens.size()));
+ const auto &File = fileForSpelled(*Spelled);
unsigned SpelledIndex = Spelled - File.SpelledTokens.data();
auto M = llvm::partition_point(File.Mappings, [&](const Mapping &M) {
@@ -412,14 +424,27 @@
});
if (M == File.Mappings.end() || M->BeginSpelled != SpelledIndex)
return llvm::None;
+ return makeExpansion(File, *M);
+}
- Expansion E;
- E.Spelled = llvm::makeArrayRef(File.SpelledTokens.data() + M->BeginSpelled,
- File.SpelledTokens.data() + M->EndSpelled);
- E.Expanded = llvm::makeArrayRef(ExpandedTokens.data() + M->BeginExpanded,
- ExpandedTokens.data() + M->EndExpanded);
- return E;
+std::vector<TokenBuffer::Expansion>
+TokenBuffer::expansionsAffecting(llvm::ArrayRef<syntax::Token> Spelled) const {
+ if (Spelled.empty())
+ return {};
+ const auto &File = fileForSpelled(Spelled);
+
+ // Find the first overlapping range, and then copy until we stop overlapping.
+ unsigned SpelledBeginIndex = Spelled.begin() - File.SpelledTokens.data();
+ unsigned SpelledEndIndex = Spelled.end() - File.SpelledTokens.data();
+ auto M = llvm::partition_point(File.Mappings, [&](const Mapping &M) {
+ return M.EndSpelled <= SpelledBeginIndex;
+ });
+ std::vector<TokenBuffer::Expansion> Expansions;
+ for (; M != File.Mappings.end() && M->BeginSpelled < SpelledEndIndex; ++M)
+ Expansions.push_back(makeExpansion(File, *M));
+ return Expansions;
}
+
llvm::ArrayRef<syntax::Token>
syntax::spelledTokensTouching(SourceLocation Loc,
llvm::ArrayRef<syntax::Token> Tokens) {
Index: clang/include/clang/Tooling/Syntax/Tokens.h
===================================================================
--- clang/include/clang/Tooling/Syntax/Tokens.h
+++ clang/include/clang/Tooling/Syntax/Tokens.h
@@ -275,6 +275,10 @@
/// macro expands to.
llvm::Optional<Expansion>
expansionStartingAt(const syntax::Token *Spelled) const;
+ /// Returns all expansions (partially) expanded from the specified tokens.
+ /// This is the expansions whose Spelled range intersects \p Spelled.
+ std::vector<Expansion>
+ expansionsAffecting(llvm::ArrayRef<syntax::Token> Spelled) const;
/// Lexed tokens of a file before preprocessing. E.g. for the following input
/// #define DECL(name) int name = 10
@@ -352,6 +356,12 @@
mappingStartingBeforeSpelled(const MarkedFile &F,
const syntax::Token *Spelled);
+ /// Convert a private Mapping to a public Expansion.
+ Expansion makeExpansion(const MarkedFile &, const Mapping &) const;
+ /// Returns the file that the Spelled tokens are taken from.
+ /// Asserts that they are non-empty, from a tracked file, and in-bounds.
+ const MarkedFile &fileForSpelled(llvm::ArrayRef<syntax::Token> Spelled) const;
+
/// Token stream produced after preprocessing, conceputally this captures the
/// same stream as 'clang -E' (excluding the preprocessor directives like
/// #file, etc.).
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