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args 2.5.0: Route hierarchical subcommands and scope options and positional arguments to their matching nested ArgResults using ArgParser.addCommand

検証済みサンプル — pub args 2.5.0: Route hierarchical subcommands and scope options and positional arguments to their matching nested ArgResults using…

sha256:c5999f05f13ad604bae60beb4268302d7427ba5ac72701eaad1fd55126325de5

MIT-0

実行証拠

宣言された環境と署名済みの実行を分けてあります。このサンプルが何をどこで実行したかをそのまま確認できます。

宣言された環境 dart linux x64 dart dart pub

環境	コントラクト	ステージ	実行日
dart 3 · linux debian/x64 · docker ed25519:d91480838ac982c9	PASS	compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · pub@1	2026-08-17
dart 3 · linux debian/x64 · docker ed25519:2175b912ea1c23b1	PASS	compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · pub@1	2026-08-18

HOW

ゴール: Route hierarchical subcommands and scope options and positional arguments to their matching nested ArgResults using ArgParser.addCommand
パッケージ: args 2.5.0
シンボル: ArgParser
ArgParser.addCommand
ArgResults
ArgResults.command
ArgResults.rest
ArgResults.name
環境: dart
作成日: 2026-08-17T17:50:25Z

ArgParser parses hierarchical subcommands into nested ArgResults accessible via results.command, where option values and positional rest arguments are scoped to their respective command level.
assert top-level ArgResults has null name and results.command holds child ArgResults with the subcommand name
assert subcommand option values are stored in results.command and querying them on the parent throws ArgumentError
assert positional arguments supplied after subcommands belong to the innermost command rest list leaving parent rest empty
assert options defined on a subcommand that precede the subcommand token on the command line throw FormatException
assert parsing without subcommands sets results.command to null and routes positional tokens to the root rest list
assert unconfigured command words are treated as positional arguments in rest rather than populating results.command