From b66b7464ab09420f150daaec7571da31dc361cc0 Mon Sep 17 00:00:00 2001
From: Regina Pfeifer <regina@mailbox.org>
Date: Sun, 7 Apr 2019 22:14:52 +0200
Subject: [PATCH] Introduce cmSubcommandTable
---
Source/CMakeLists.txt | 2 ++
Source/cmSubcommandTable.cxx | 31 +++++++++++++++++++++++++++++++
Source/cmSubcommandTable.h | 36 ++++++++++++++++++++++++++++++++++++
bootstrap | 1 +
4 files changed, 70 insertions(+)
create mode 100644 Source/cmSubcommandTable.cxx
create mode 100644 Source/cmSubcommandTable.h
diff --git a/Source/CMakeLists.txt b/Source/CMakeLists.txt
index b1f4ca51cc..ee82ff5be1 100644
--- a/Source/CMakeLists.txt
+++ b/Source/CMakeLists.txt
@@ -639,6 +639,8 @@ set(SRCS
cmStringReplaceHelper.cxx
cmStringCommand.cxx
cmStringCommand.h
+ cmSubcommandTable.cxx
+ cmSubcommandTable.h
cmSubdirCommand.cxx
cmSubdirCommand.h
cmSubdirDependsCommand.cxx
diff --git a/Source/cmSubcommandTable.cxx b/Source/cmSubcommandTable.cxx
new file mode 100644
index 0000000000..f6194f816d
--- /dev/null
+++ b/Source/cmSubcommandTable.cxx
@@ -0,0 +1,31 @@
+/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
+ file Copyright.txt or https://cmake.org/licensing for details. */
+#include "cmSubcommandTable.h"
+
+#include <algorithm>
+
+#include "cmExecutionStatus.h"
+#include "cmStringAlgorithms.h"
+
+cmSubcommandTable::cmSubcommandTable(std::initializer_list<InitElem> init)
+ : Impl(init.begin(), init.end())
+{
+ std::sort(this->Impl.begin(), this->Impl.end(),
+ [](Elem const& left, Elem const& right) {
+ return left.first < right.first;
+ });
+}
+
+bool cmSubcommandTable::operator()(cm::string_view key,
+ std::vector<std::string> const& args,
+ cmExecutionStatus& status) const
+{
+ auto const it = std::lower_bound(
+ this->Impl.begin(), this->Impl.end(), key,
+ [](Elem const& elem, cm::string_view k) { return elem.first < k; });
+ if (it != this->Impl.end() && it->first == key) {
+ return it->second(args, status);
+ }
+ status.SetError(cmStrCat("does not recognize sub-command ", key));
+ return false;
+}
diff --git a/Source/cmSubcommandTable.h b/Source/cmSubcommandTable.h
new file mode 100644
index 0000000000..21342bbab6
--- /dev/null
+++ b/Source/cmSubcommandTable.h
@@ -0,0 +1,36 @@
+/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
+ file Copyright.txt or https://cmake.org/licensing for details. */
+#ifndef cmSubcommandTable_h
+#define cmSubcommandTable_h
+
+#include "cmConfigure.h" // IWYU pragma: keep
+
+#include "cm_static_string_view.hxx"
+#include "cm_string_view.hxx"
+
+#include <initializer_list>
+#include <string>
+#include <utility>
+#include <vector>
+
+class cmExecutionStatus;
+
+class cmSubcommandTable
+{
+public:
+ using Command = bool (*)(std::vector<std::string> const&,
+ cmExecutionStatus&);
+
+ using Elem = std::pair<cm::string_view, Command>;
+ using InitElem = std::pair<cm::static_string_view, Command>;
+
+ cmSubcommandTable(std::initializer_list<InitElem> init);
+
+ bool operator()(cm::string_view key, std::vector<std::string> const& args,
+ cmExecutionStatus& status) const;
+
+private:
+ std::vector<Elem> Impl;
+};
+
+#endif
diff --git a/bootstrap b/bootstrap
index 06e11b5e31..c97a5d4e56 100755
--- a/bootstrap
+++ b/bootstrap
@@ -426,6 +426,7 @@ CMAKE_CXX_SOURCES="\
cmStringAlgorithms \
cmStringReplaceHelper \
cmStringCommand \
+ cmSubcommandTable \
cmSubdirCommand \
cmSystemTools \
cmTarget \
--
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