35 lines
1.2 KiB
Go
35 lines
1.2 KiB
Go
// Copyright 2016-2017, Pulumi Corporation
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package contract
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import (
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"fmt"
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)
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const requireMsg = "A precondition has failed for %v"
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// Require checks a precondition condition pertaining to a function parameter, and Fails if it is false.
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func Require(cond bool, param string) {
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if !cond {
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failfast(fmt.Sprintf(requireMsg, param))
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}
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}
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// Requiref checks a precondition condition pertaining to a function parameter, and Failfs if it is false.
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func Requiref(cond bool, param string, msg string, args ...interface{}) {
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if !cond {
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failfast(fmt.Sprintf("%v: %v", fmt.Sprintf(requireMsg, param), fmt.Sprintf(msg, args...)))
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}
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}
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