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This exposes the already existing UserStringArrayOption class through the meson_options.txt. The intention is to provide a way for projects to take list/array type arguments and validate that all of the elements in that array are valid without using complex looping constructrs.
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# An array type for user options | ||
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Previously to have an option that took more than one value a string value would | ||
have to be created and split, but validating this was difficult. A new array type | ||
has been added to the meson_options.txt for this case. It works like a 'combo', but | ||
allows more than one option to be passed. When used on the command line (with -D), | ||
values are passed as a comma separated list. | ||
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```meson | ||
option('array_opt', type : 'array', choices : ['one', 'two', 'three'], value : ['one']) | ||
``` | ||
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These can be overwritten on the command line, | ||
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```meson | ||
meson _build -Darray_opt=two,three | ||
``` |
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# Copyright © 2017 Intel Corporation | ||
# | ||
# 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. | ||
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project('stringarray default options') | ||
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assert(get_option('array') == ['foo', 'bar'], 'Default value for array is not equal to choices') |
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# Copyright © 2017 Intel Corporation | ||
# | ||
# 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. | ||
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option( | ||
'array', | ||
type : 'array', | ||
choices : ['foo', 'bar'], | ||
) |
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option('testoption', type : 'string', value : 'optval', description : 'An option to do something') | ||
option('other_one', type : 'boolean', value : false) | ||
option('combo_opt', type : 'combo', choices : ['one', 'two', 'combo'], value : 'combo') | ||
option('array_opt', type : 'array', choices : ['one', 'two', 'three'], value : ['one', 'two']) |
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# Copyright © 2017 Intel Corporation | ||
# | ||
# 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. | ||
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project('array option test') |
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# Copyright © 2017 Intel Corporation | ||
# | ||
# 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. | ||
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option( | ||
'list', | ||
type : 'array', | ||
value : ['foo', 'bar'], | ||
choices : ['foo', 'bar', 'oink', 'boink'], | ||
) |