[llvm-branch-commits] [mlir] [MLIR][OpenMP] Automate operand structure definition (PR #99508)

[Krzysztof Parzyszek via llvm-branch-commits]

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@@ -12,11 +12,52 @@
 
 #include "mlir/TableGen/GenInfo.h"
 
+#include "mlir/TableGen/CodeGenHelpers.h"
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/ADT/TypeSwitch.h"
 #include "llvm/TableGen/Error.h"
 #include "llvm/TableGen/Record.h"
 
 using namespace llvm;
 
+/// The code block defining the base mixin class for combining clause operand
+/// structures.
+static const char *const baseMixinClass = R"(
+namespace detail {
+template <typename... Mixins>
+struct Clauses : public Mixins... {};
+} // namespace detail
+)";
+
+/// The code block defining operation argument structures.
+static const char *const operationArgStruct = R"(
+using {0}Operands = detail::Clauses<{1}>;
+)";
+
+/// Remove multiple optional prefixes and suffixes from \c str.
+///
+/// Prefixes and suffixes are attempted to be removed once in the order they
+/// appear in the \c prefixes and \c suffixes arguments. All prefixes are
+/// processed before suffixes are. This means it will behave as shown in the
+/// following example:
+///   - str: "PrePreNameSuf1Suf2"
+///   - prefixes: ["Pre"]
+///   - suffixes: ["Suf1", "Suf2"]
+///   - return: "PreNameSuf1"
+static StringRef stripPrefixAndSuffix(StringRef str,
+                                      llvm::ArrayRef<StringRef> prefixes,
+                                      llvm::ArrayRef<StringRef> suffixes) {
+  for (StringRef prefix : prefixes)
+    if (str.starts_with(prefix))
+      str = str.substr(prefix.size());
+
+  for (StringRef suffix : suffixes)
+    if (str.ends_with(suffix))
+      str = str.substr(0, str.size() - suffix.size());
----------------
kparzysz wrote:

`str = str.drop_back(suffix.size())`

https://github.com/llvm/llvm-project/pull/99508