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-rw-r--r--doc/concepts/doc-strings.md10
-rw-r--r--src/buildtool/build_engine/target_map/built_in_rules.cpp1
-rw-r--r--src/buildtool/main/describe.cpp11
-rw-r--r--test/end-to-end/cli/TARGETS7
-rw-r--r--test/end-to-end/cli/describe.sh94
5 files changed, 123 insertions, 0 deletions
diff --git a/doc/concepts/doc-strings.md b/doc/concepts/doc-strings.md
index ed4ee84b..22115cee 100644
--- a/doc/concepts/doc-strings.md
+++ b/doc/concepts/doc-strings.md
@@ -131,6 +131,16 @@ strings describing the targeted in general and `"config_doc"` is a map
from (some of) the variables of the `"flexible_config"` to an array of
strings describing this parameter.
+Configure targets
+-----------------
+
+As configure targets often serve as internal interface to external
+export targets (e.g., in order to set a needed configuration), we
+support documentation here as well. As configure targets, being
+built-in, have a fixed set of fields, a `"doc"` field can be used
+for this purpose without conflicts. Again, the `"doc"` field is an
+array of strings describing the target in general.
+
Presentation of the documentation
---------------------------------
diff --git a/src/buildtool/build_engine/target_map/built_in_rules.cpp b/src/buildtool/build_engine/target_map/built_in_rules.cpp
index 7d858840..81f679e5 100644
--- a/src/buildtool/build_engine/target_map/built_in_rules.cpp
+++ b/src/buildtool/build_engine/target_map/built_in_rules.cpp
@@ -76,6 +76,7 @@ auto const kInstallRuleFields =
auto const kConfigureRuleFields =
std::unordered_set<std::string>{"arguments_config",
"config",
+ "doc",
"tainted",
"target",
"type"};
diff --git a/src/buildtool/main/describe.cpp b/src/buildtool/main/describe.cpp
index 4739ba88..e3ab1223 100644
--- a/src/buildtool/main/describe.cpp
+++ b/src/buildtool/main/describe.cpp
@@ -431,6 +431,17 @@ auto DescribeTarget(BuildMaps::Target::ConfiguredTarget const& id,
PrintFields(*flexible_config, config_doc, " - ", " | ");
}
}
+ else if (*rule_it == "configure") {
+ auto target = desc.find("target");
+ auto doc = desc.find("doc");
+ if (doc != desc.end()) {
+ PrintDoc(*doc, " | ");
+ }
+ if (target != desc.end()) {
+ std::cout << "The target to be configured is defined as "
+ << target->dump() << "." << std::endl;
+ }
+ }
return kExitSuccess;
}
auto rule_name = BuildMaps::Base::ParseEntityNameFromJson(
diff --git a/test/end-to-end/cli/TARGETS b/test/end-to-end/cli/TARGETS
index 03f1db49..f7237f28 100644
--- a/test/end-to-end/cli/TARGETS
+++ b/test/end-to-end/cli/TARGETS
@@ -60,6 +60,12 @@
, "test": ["log-limit.sh"]
, "deps": [["", "tool-under-test"], ["", "mr-tool-under-test"]]
}
+, "describe":
+ { "type": ["@", "rules", "shell/test", "script"]
+ , "name": ["describe"]
+ , "test": ["describe.sh"]
+ , "deps": [["", "tool-under-test"]]
+ }
, "TESTS":
{ "type": "install"
, "tainted": ["test"]
@@ -75,6 +81,7 @@
, "git cas -P"
, "install --archive"
, "conflict report"
+ , "describe"
]
, { "type": "if"
, "cond": {"type": "var", "name": "TEST_BOOTSTRAP_JUST_MR"}
diff --git a/test/end-to-end/cli/describe.sh b/test/end-to-end/cli/describe.sh
new file mode 100644
index 00000000..378ee4d2
--- /dev/null
+++ b/test/end-to-end/cli/describe.sh
@@ -0,0 +1,94 @@
+#!/bin/sh
+# Copyright 2024 Huawei Cloud Computing Technology Co., Ltd.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set -eu
+
+ROOT="$(pwd)"
+JUST="${ROOT}/bin/tool-under-test"
+LBR="${TEST_TMPDIR}/build-root"
+OUT="${TEST_TMPDIR}/output"
+
+mkdir work
+cd work
+touch ROOT
+
+cat > TARGETS <<'EOF'
+{ "payload":
+ { "type": "file_gen"
+ , "arguments_config": ["NAME"]
+ , "name": "greeting.txt"
+ , "data":
+ {"type": "join", "$1": ["Hello ", {"type": "var", "name": "NAME"}, "!"]}
+ }
+, "exported-target":
+ { "type": "export"
+ , "doc": ["Here we export the canonical GREETING text"]
+ , "target": "payload"
+ , "flexible_config": ["NAME"]
+ , "config_doc": {"NAME": ["The RECIPIENT of the greeting"]}
+ }
+, "":
+ { "type": "configure"
+ , "doc": ["Configure the canonical greeting to set a DEFAULT name"]
+ , "arguments_config": ["NAME"]
+ , "target": "exported-target"
+ , "config":
+ { "type": "singleton_map"
+ , "key": "NAME"
+ , "value": {"type": "var", "name": "NAME", "default": "world"}
+ }
+ }
+}
+EOF
+
+# Sanity check: the target description actually works
+"${JUST}" install --local-build-root "${LBR}" -o "${OUT}" 2>&1
+grep 'Hello world' "${OUT}/greeting.txt"
+
+# Verify the description of the export target
+"${JUST}" describe --local-build-root "${LBR}" exported-target \
+ > "${OUT}/export.doc" 2> "${OUT}/log"
+echo
+cat "${OUT}/log"
+echo
+cat "${OUT}/export.doc"
+echo
+echo
+# - rule name
+grep '"export"' "${OUT}/export.doc"
+# - top-level description
+grep GREETING "${OUT}/export.doc"
+# - flexible config
+grep NAME "${OUT}/export.doc"
+# - documentation of variable
+grep RECIPIENT "${OUT}/export.doc"
+
+# Verify the description of the configure target
+"${JUST}" describe --local-build-root "${LBR}" \
+ > "${OUT}/configure.doc" 2> "${OUT}/log"
+echo
+cat "${OUT}/log"
+echo
+cat "${OUT}/configure.doc"
+echo
+echo
+# - rule name
+grep '"configure"' "${OUT}/configure.doc"
+# - top-level description
+grep DEFAULT "${OUT}/configure.doc"
+# - the expression defining what to configure
+grep '"exported-target"' "${OUT}/configure.doc"
+
+echo OK