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40 lines
1.6 KiB
Go
40 lines
1.6 KiB
Go
// Copyright 2018 Google LLC
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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 functions defines the standard builtin functions supported by the
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// interpreter and as declared within the checker#StandardDeclarations.
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package functions
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import fn "github.com/google/cel-go/common/functions"
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// Overload defines a named overload of a function, indicating an operand trait
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// which must be present on the first argument to the overload as well as one
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// of either a unary, binary, or function implementation.
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//
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// The majority of operators within the expression language are unary or binary
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// and the specializations simplify the call contract for implementers of
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// types with operator overloads. Any added complexity is assumed to be handled
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// by the generic FunctionOp.
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type Overload = fn.Overload
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// UnaryOp is a function that takes a single value and produces an output.
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type UnaryOp = fn.UnaryOp
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// BinaryOp is a function that takes two values and produces an output.
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type BinaryOp = fn.BinaryOp
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// FunctionOp is a function with accepts zero or more arguments and produces
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// a value or error as a result.
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type FunctionOp = fn.FunctionOp
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