mirror of
https://github.com/k3s-io/kubernetes.git
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441 lines
19 KiB
Go
441 lines
19 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 checker
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import (
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"github.com/google/cel-go/checker/decls"
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"github.com/google/cel-go/common/operators"
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"github.com/google/cel-go/common/overloads"
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exprpb "google.golang.org/genproto/googleapis/api/expr/v1alpha1"
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)
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// StandardDeclarations returns the Decls for all functions and constants in the evaluator.
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func StandardDeclarations() []*exprpb.Decl {
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// Some shortcuts we use when building declarations.
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paramA := decls.NewTypeParamType("A")
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typeParamAList := []string{"A"}
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listOfA := decls.NewListType(paramA)
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paramB := decls.NewTypeParamType("B")
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typeParamABList := []string{"A", "B"}
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mapOfAB := decls.NewMapType(paramA, paramB)
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var idents []*exprpb.Decl
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for _, t := range []*exprpb.Type{
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decls.Int, decls.Uint, decls.Bool,
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decls.Double, decls.Bytes, decls.String} {
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idents = append(idents,
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decls.NewVar(FormatCheckedType(t), decls.NewTypeType(t)))
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}
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idents = append(idents,
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decls.NewVar("list", decls.NewTypeType(listOfA)),
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decls.NewVar("map", decls.NewTypeType(mapOfAB)),
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decls.NewVar("null_type", decls.NewTypeType(decls.Null)),
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decls.NewVar("type", decls.NewTypeType(decls.NewTypeType(nil))))
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// Booleans
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// TODO: allow the conditional to return a heterogenous type.
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return append(idents, []*exprpb.Decl{
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decls.NewFunction(operators.Conditional,
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decls.NewParameterizedOverload(overloads.Conditional,
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[]*exprpb.Type{decls.Bool, paramA, paramA}, paramA,
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typeParamAList)),
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decls.NewFunction(operators.LogicalAnd,
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decls.NewOverload(overloads.LogicalAnd,
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[]*exprpb.Type{decls.Bool, decls.Bool}, decls.Bool)),
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decls.NewFunction(operators.LogicalOr,
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decls.NewOverload(overloads.LogicalOr,
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[]*exprpb.Type{decls.Bool, decls.Bool}, decls.Bool)),
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decls.NewFunction(operators.LogicalNot,
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decls.NewOverload(overloads.LogicalNot,
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[]*exprpb.Type{decls.Bool}, decls.Bool)),
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decls.NewFunction(operators.NotStrictlyFalse,
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decls.NewOverload(overloads.NotStrictlyFalse,
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[]*exprpb.Type{decls.Bool}, decls.Bool)),
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// Relations.
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decls.NewFunction(operators.Less,
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decls.NewOverload(overloads.LessBool,
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[]*exprpb.Type{decls.Bool, decls.Bool}, decls.Bool),
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decls.NewOverload(overloads.LessInt64,
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[]*exprpb.Type{decls.Int, decls.Int}, decls.Bool),
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decls.NewOverload(overloads.LessUint64,
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[]*exprpb.Type{decls.Uint, decls.Uint}, decls.Bool),
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decls.NewOverload(overloads.LessDouble,
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[]*exprpb.Type{decls.Double, decls.Double}, decls.Bool),
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decls.NewOverload(overloads.LessString,
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[]*exprpb.Type{decls.String, decls.String}, decls.Bool),
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decls.NewOverload(overloads.LessBytes,
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[]*exprpb.Type{decls.Bytes, decls.Bytes}, decls.Bool),
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decls.NewOverload(overloads.LessTimestamp,
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[]*exprpb.Type{decls.Timestamp, decls.Timestamp}, decls.Bool),
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decls.NewOverload(overloads.LessDuration,
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[]*exprpb.Type{decls.Duration, decls.Duration}, decls.Bool)),
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decls.NewFunction(operators.LessEquals,
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decls.NewOverload(overloads.LessEqualsBool,
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[]*exprpb.Type{decls.Bool, decls.Bool}, decls.Bool),
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decls.NewOverload(overloads.LessEqualsInt64,
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[]*exprpb.Type{decls.Int, decls.Int}, decls.Bool),
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decls.NewOverload(overloads.LessEqualsUint64,
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[]*exprpb.Type{decls.Uint, decls.Uint}, decls.Bool),
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decls.NewOverload(overloads.LessEqualsDouble,
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[]*exprpb.Type{decls.Double, decls.Double}, decls.Bool),
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decls.NewOverload(overloads.LessEqualsString,
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[]*exprpb.Type{decls.String, decls.String}, decls.Bool),
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decls.NewOverload(overloads.LessEqualsBytes,
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[]*exprpb.Type{decls.Bytes, decls.Bytes}, decls.Bool),
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decls.NewOverload(overloads.LessEqualsTimestamp,
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[]*exprpb.Type{decls.Timestamp, decls.Timestamp}, decls.Bool),
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decls.NewOverload(overloads.LessEqualsDuration,
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[]*exprpb.Type{decls.Duration, decls.Duration}, decls.Bool)),
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decls.NewFunction(operators.Greater,
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decls.NewOverload(overloads.GreaterBool,
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[]*exprpb.Type{decls.Bool, decls.Bool}, decls.Bool),
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decls.NewOverload(overloads.GreaterInt64,
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[]*exprpb.Type{decls.Int, decls.Int}, decls.Bool),
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decls.NewOverload(overloads.GreaterUint64,
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[]*exprpb.Type{decls.Uint, decls.Uint}, decls.Bool),
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decls.NewOverload(overloads.GreaterDouble,
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[]*exprpb.Type{decls.Double, decls.Double}, decls.Bool),
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decls.NewOverload(overloads.GreaterString,
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[]*exprpb.Type{decls.String, decls.String}, decls.Bool),
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decls.NewOverload(overloads.GreaterBytes,
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[]*exprpb.Type{decls.Bytes, decls.Bytes}, decls.Bool),
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decls.NewOverload(overloads.GreaterTimestamp,
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[]*exprpb.Type{decls.Timestamp, decls.Timestamp}, decls.Bool),
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decls.NewOverload(overloads.GreaterDuration,
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[]*exprpb.Type{decls.Duration, decls.Duration}, decls.Bool)),
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decls.NewFunction(operators.GreaterEquals,
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decls.NewOverload(overloads.GreaterEqualsBool,
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[]*exprpb.Type{decls.Bool, decls.Bool}, decls.Bool),
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decls.NewOverload(overloads.GreaterEqualsInt64,
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[]*exprpb.Type{decls.Int, decls.Int}, decls.Bool),
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decls.NewOverload(overloads.GreaterEqualsUint64,
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[]*exprpb.Type{decls.Uint, decls.Uint}, decls.Bool),
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decls.NewOverload(overloads.GreaterEqualsDouble,
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[]*exprpb.Type{decls.Double, decls.Double}, decls.Bool),
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decls.NewOverload(overloads.GreaterEqualsString,
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[]*exprpb.Type{decls.String, decls.String}, decls.Bool),
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decls.NewOverload(overloads.GreaterEqualsBytes,
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[]*exprpb.Type{decls.Bytes, decls.Bytes}, decls.Bool),
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decls.NewOverload(overloads.GreaterEqualsTimestamp,
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[]*exprpb.Type{decls.Timestamp, decls.Timestamp}, decls.Bool),
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decls.NewOverload(overloads.GreaterEqualsDuration,
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[]*exprpb.Type{decls.Duration, decls.Duration}, decls.Bool)),
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decls.NewFunction(operators.Equals,
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decls.NewParameterizedOverload(overloads.Equals,
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[]*exprpb.Type{paramA, paramA}, decls.Bool,
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typeParamAList)),
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decls.NewFunction(operators.NotEquals,
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decls.NewParameterizedOverload(overloads.NotEquals,
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[]*exprpb.Type{paramA, paramA}, decls.Bool,
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typeParamAList)),
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// Algebra.
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decls.NewFunction(operators.Subtract,
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decls.NewOverload(overloads.SubtractInt64,
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[]*exprpb.Type{decls.Int, decls.Int}, decls.Int),
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decls.NewOverload(overloads.SubtractUint64,
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[]*exprpb.Type{decls.Uint, decls.Uint}, decls.Uint),
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decls.NewOverload(overloads.SubtractDouble,
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[]*exprpb.Type{decls.Double, decls.Double}, decls.Double),
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decls.NewOverload(overloads.SubtractTimestampTimestamp,
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[]*exprpb.Type{decls.Timestamp, decls.Timestamp}, decls.Duration),
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decls.NewOverload(overloads.SubtractTimestampDuration,
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[]*exprpb.Type{decls.Timestamp, decls.Duration}, decls.Timestamp),
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decls.NewOverload(overloads.SubtractDurationDuration,
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[]*exprpb.Type{decls.Duration, decls.Duration}, decls.Duration)),
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decls.NewFunction(operators.Multiply,
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decls.NewOverload(overloads.MultiplyInt64,
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[]*exprpb.Type{decls.Int, decls.Int}, decls.Int),
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decls.NewOverload(overloads.MultiplyUint64,
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[]*exprpb.Type{decls.Uint, decls.Uint}, decls.Uint),
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decls.NewOverload(overloads.MultiplyDouble,
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[]*exprpb.Type{decls.Double, decls.Double}, decls.Double)),
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decls.NewFunction(operators.Divide,
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decls.NewOverload(overloads.DivideInt64,
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[]*exprpb.Type{decls.Int, decls.Int}, decls.Int),
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decls.NewOverload(overloads.DivideUint64,
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[]*exprpb.Type{decls.Uint, decls.Uint}, decls.Uint),
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decls.NewOverload(overloads.DivideDouble,
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[]*exprpb.Type{decls.Double, decls.Double}, decls.Double)),
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decls.NewFunction(operators.Modulo,
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decls.NewOverload(overloads.ModuloInt64,
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[]*exprpb.Type{decls.Int, decls.Int}, decls.Int),
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decls.NewOverload(overloads.ModuloUint64,
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[]*exprpb.Type{decls.Uint, decls.Uint}, decls.Uint)),
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decls.NewFunction(operators.Add,
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decls.NewOverload(overloads.AddInt64,
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[]*exprpb.Type{decls.Int, decls.Int}, decls.Int),
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decls.NewOverload(overloads.AddUint64,
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[]*exprpb.Type{decls.Uint, decls.Uint}, decls.Uint),
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decls.NewOverload(overloads.AddDouble,
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[]*exprpb.Type{decls.Double, decls.Double}, decls.Double),
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decls.NewOverload(overloads.AddString,
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[]*exprpb.Type{decls.String, decls.String}, decls.String),
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decls.NewOverload(overloads.AddBytes,
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[]*exprpb.Type{decls.Bytes, decls.Bytes}, decls.Bytes),
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decls.NewParameterizedOverload(overloads.AddList,
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[]*exprpb.Type{listOfA, listOfA}, listOfA,
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typeParamAList),
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decls.NewOverload(overloads.AddTimestampDuration,
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[]*exprpb.Type{decls.Timestamp, decls.Duration}, decls.Timestamp),
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decls.NewOverload(overloads.AddDurationTimestamp,
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[]*exprpb.Type{decls.Duration, decls.Timestamp}, decls.Timestamp),
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decls.NewOverload(overloads.AddDurationDuration,
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[]*exprpb.Type{decls.Duration, decls.Duration}, decls.Duration)),
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decls.NewFunction(operators.Negate,
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decls.NewOverload(overloads.NegateInt64,
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[]*exprpb.Type{decls.Int}, decls.Int),
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decls.NewOverload(overloads.NegateDouble,
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[]*exprpb.Type{decls.Double}, decls.Double)),
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// Index.
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decls.NewFunction(operators.Index,
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decls.NewParameterizedOverload(overloads.IndexList,
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[]*exprpb.Type{listOfA, decls.Int}, paramA,
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typeParamAList),
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decls.NewParameterizedOverload(overloads.IndexMap,
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[]*exprpb.Type{mapOfAB, paramA}, paramB,
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typeParamABList)),
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//decls.NewOverload(overloads.IndexMessage,
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// []*expr.Type{decls.Dyn, decls.String}, decls.Dyn)),
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// Collections.
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decls.NewFunction(overloads.Size,
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decls.NewInstanceOverload(overloads.SizeStringInst,
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[]*exprpb.Type{decls.String}, decls.Int),
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decls.NewInstanceOverload(overloads.SizeBytesInst,
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[]*exprpb.Type{decls.Bytes}, decls.Int),
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decls.NewParameterizedInstanceOverload(overloads.SizeListInst,
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[]*exprpb.Type{listOfA}, decls.Int, typeParamAList),
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decls.NewParameterizedInstanceOverload(overloads.SizeMapInst,
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[]*exprpb.Type{mapOfAB}, decls.Int, typeParamABList),
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decls.NewOverload(overloads.SizeString,
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[]*exprpb.Type{decls.String}, decls.Int),
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decls.NewOverload(overloads.SizeBytes,
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[]*exprpb.Type{decls.Bytes}, decls.Int),
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decls.NewParameterizedOverload(overloads.SizeList,
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[]*exprpb.Type{listOfA}, decls.Int, typeParamAList),
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decls.NewParameterizedOverload(overloads.SizeMap,
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[]*exprpb.Type{mapOfAB}, decls.Int, typeParamABList)),
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decls.NewFunction(operators.In,
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decls.NewParameterizedOverload(overloads.InList,
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[]*exprpb.Type{paramA, listOfA}, decls.Bool,
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typeParamAList),
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decls.NewParameterizedOverload(overloads.InMap,
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[]*exprpb.Type{paramA, mapOfAB}, decls.Bool,
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typeParamABList)),
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// Deprecated 'in()' function.
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decls.NewFunction(overloads.DeprecatedIn,
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decls.NewParameterizedOverload(overloads.InList,
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[]*exprpb.Type{paramA, listOfA}, decls.Bool,
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typeParamAList),
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decls.NewParameterizedOverload(overloads.InMap,
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[]*exprpb.Type{paramA, mapOfAB}, decls.Bool,
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typeParamABList)),
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//decls.NewOverload(overloads.InMessage,
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// []*expr.Type{Dyn, decls.String},decls.Bool)),
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// Conversions to type.
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decls.NewFunction(overloads.TypeConvertType,
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decls.NewParameterizedOverload(overloads.TypeConvertType,
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[]*exprpb.Type{paramA}, decls.NewTypeType(paramA), typeParamAList)),
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// Conversions to int.
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decls.NewFunction(overloads.TypeConvertInt,
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decls.NewOverload(overloads.IntToInt, []*exprpb.Type{decls.Int}, decls.Int),
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decls.NewOverload(overloads.UintToInt, []*exprpb.Type{decls.Uint}, decls.Int),
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decls.NewOverload(overloads.DoubleToInt, []*exprpb.Type{decls.Double}, decls.Int),
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decls.NewOverload(overloads.StringToInt, []*exprpb.Type{decls.String}, decls.Int),
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decls.NewOverload(overloads.TimestampToInt, []*exprpb.Type{decls.Timestamp}, decls.Int),
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decls.NewOverload(overloads.DurationToInt, []*exprpb.Type{decls.Duration}, decls.Int)),
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// Conversions to uint.
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decls.NewFunction(overloads.TypeConvertUint,
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decls.NewOverload(overloads.UintToUint, []*exprpb.Type{decls.Uint}, decls.Uint),
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decls.NewOverload(overloads.IntToUint, []*exprpb.Type{decls.Int}, decls.Uint),
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decls.NewOverload(overloads.DoubleToUint, []*exprpb.Type{decls.Double}, decls.Uint),
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decls.NewOverload(overloads.StringToUint, []*exprpb.Type{decls.String}, decls.Uint)),
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// Conversions to double.
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decls.NewFunction(overloads.TypeConvertDouble,
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decls.NewOverload(overloads.DoubleToDouble, []*exprpb.Type{decls.Double}, decls.Double),
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decls.NewOverload(overloads.IntToDouble, []*exprpb.Type{decls.Int}, decls.Double),
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decls.NewOverload(overloads.UintToDouble, []*exprpb.Type{decls.Uint}, decls.Double),
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decls.NewOverload(overloads.StringToDouble, []*exprpb.Type{decls.String}, decls.Double)),
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// Conversions to bool.
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decls.NewFunction(overloads.TypeConvertBool,
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decls.NewOverload(overloads.BoolToBool, []*exprpb.Type{decls.Bool}, decls.Bool),
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decls.NewOverload(overloads.StringToBool, []*exprpb.Type{decls.String}, decls.Bool)),
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// Conversions to string.
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decls.NewFunction(overloads.TypeConvertString,
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decls.NewOverload(overloads.StringToString, []*exprpb.Type{decls.String}, decls.String),
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decls.NewOverload(overloads.BoolToString, []*exprpb.Type{decls.Bool}, decls.String),
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decls.NewOverload(overloads.IntToString, []*exprpb.Type{decls.Int}, decls.String),
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decls.NewOverload(overloads.UintToString, []*exprpb.Type{decls.Uint}, decls.String),
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decls.NewOverload(overloads.DoubleToString, []*exprpb.Type{decls.Double}, decls.String),
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decls.NewOverload(overloads.BytesToString, []*exprpb.Type{decls.Bytes}, decls.String),
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decls.NewOverload(overloads.TimestampToString, []*exprpb.Type{decls.Timestamp}, decls.String),
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decls.NewOverload(overloads.DurationToString, []*exprpb.Type{decls.Duration}, decls.String)),
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// Conversions to bytes.
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decls.NewFunction(overloads.TypeConvertBytes,
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decls.NewOverload(overloads.BytesToBytes, []*exprpb.Type{decls.Bytes}, decls.Bytes),
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decls.NewOverload(overloads.StringToBytes, []*exprpb.Type{decls.String}, decls.Bytes)),
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// Conversions to timestamps.
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decls.NewFunction(overloads.TypeConvertTimestamp,
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decls.NewOverload(overloads.TimestampToTimestamp,
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[]*exprpb.Type{decls.Timestamp}, decls.Timestamp),
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decls.NewOverload(overloads.StringToTimestamp,
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[]*exprpb.Type{decls.String}, decls.Timestamp),
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decls.NewOverload(overloads.IntToTimestamp,
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[]*exprpb.Type{decls.Int}, decls.Timestamp)),
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// Conversions to durations.
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decls.NewFunction(overloads.TypeConvertDuration,
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decls.NewOverload(overloads.DurationToDuration,
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[]*exprpb.Type{decls.Duration}, decls.Duration),
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decls.NewOverload(overloads.StringToDuration,
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[]*exprpb.Type{decls.String}, decls.Duration),
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decls.NewOverload(overloads.IntToDuration,
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[]*exprpb.Type{decls.Int}, decls.Duration)),
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// Conversions to Dyn.
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decls.NewFunction(overloads.TypeConvertDyn,
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decls.NewParameterizedOverload(overloads.ToDyn,
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[]*exprpb.Type{paramA}, decls.Dyn,
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typeParamAList)),
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// String functions.
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decls.NewFunction(overloads.Contains,
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decls.NewInstanceOverload(overloads.ContainsString,
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[]*exprpb.Type{decls.String, decls.String}, decls.Bool)),
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decls.NewFunction(overloads.EndsWith,
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decls.NewInstanceOverload(overloads.EndsWithString,
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[]*exprpb.Type{decls.String, decls.String}, decls.Bool)),
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decls.NewFunction(overloads.Matches,
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decls.NewInstanceOverload(overloads.MatchesString,
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[]*exprpb.Type{decls.String, decls.String}, decls.Bool)),
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decls.NewFunction(overloads.StartsWith,
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decls.NewInstanceOverload(overloads.StartsWithString,
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[]*exprpb.Type{decls.String, decls.String}, decls.Bool)),
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// Date/time functions.
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decls.NewFunction(overloads.TimeGetFullYear,
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decls.NewInstanceOverload(overloads.TimestampToYear,
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[]*exprpb.Type{decls.Timestamp}, decls.Int),
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decls.NewInstanceOverload(overloads.TimestampToYearWithTz,
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[]*exprpb.Type{decls.Timestamp, decls.String}, decls.Int)),
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decls.NewFunction(overloads.TimeGetMonth,
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decls.NewInstanceOverload(overloads.TimestampToMonth,
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[]*exprpb.Type{decls.Timestamp}, decls.Int),
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decls.NewInstanceOverload(overloads.TimestampToMonthWithTz,
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[]*exprpb.Type{decls.Timestamp, decls.String}, decls.Int)),
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decls.NewFunction(overloads.TimeGetDayOfYear,
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decls.NewInstanceOverload(overloads.TimestampToDayOfYear,
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[]*exprpb.Type{decls.Timestamp}, decls.Int),
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decls.NewInstanceOverload(overloads.TimestampToDayOfYearWithTz,
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[]*exprpb.Type{decls.Timestamp, decls.String}, decls.Int)),
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decls.NewFunction(overloads.TimeGetDayOfMonth,
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decls.NewInstanceOverload(overloads.TimestampToDayOfMonthZeroBased,
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[]*exprpb.Type{decls.Timestamp}, decls.Int),
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decls.NewInstanceOverload(overloads.TimestampToDayOfMonthZeroBasedWithTz,
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[]*exprpb.Type{decls.Timestamp, decls.String}, decls.Int)),
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decls.NewFunction(overloads.TimeGetDate,
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decls.NewInstanceOverload(overloads.TimestampToDayOfMonthOneBased,
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[]*exprpb.Type{decls.Timestamp}, decls.Int),
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decls.NewInstanceOverload(overloads.TimestampToDayOfMonthOneBasedWithTz,
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[]*exprpb.Type{decls.Timestamp, decls.String}, decls.Int)),
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decls.NewFunction(overloads.TimeGetDayOfWeek,
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decls.NewInstanceOverload(overloads.TimestampToDayOfWeek,
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[]*exprpb.Type{decls.Timestamp}, decls.Int),
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decls.NewInstanceOverload(overloads.TimestampToDayOfWeekWithTz,
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[]*exprpb.Type{decls.Timestamp, decls.String}, decls.Int)),
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decls.NewFunction(overloads.TimeGetHours,
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decls.NewInstanceOverload(overloads.TimestampToHours,
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[]*exprpb.Type{decls.Timestamp}, decls.Int),
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decls.NewInstanceOverload(overloads.TimestampToHoursWithTz,
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[]*exprpb.Type{decls.Timestamp, decls.String}, decls.Int),
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decls.NewInstanceOverload(overloads.DurationToHours,
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[]*exprpb.Type{decls.Duration}, decls.Int)),
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decls.NewFunction(overloads.TimeGetMinutes,
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decls.NewInstanceOverload(overloads.TimestampToMinutes,
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[]*exprpb.Type{decls.Timestamp}, decls.Int),
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decls.NewInstanceOverload(overloads.TimestampToMinutesWithTz,
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[]*exprpb.Type{decls.Timestamp, decls.String}, decls.Int),
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decls.NewInstanceOverload(overloads.DurationToMinutes,
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[]*exprpb.Type{decls.Duration}, decls.Int)),
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decls.NewFunction(overloads.TimeGetSeconds,
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decls.NewInstanceOverload(overloads.TimestampToSeconds,
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[]*exprpb.Type{decls.Timestamp}, decls.Int),
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decls.NewInstanceOverload(overloads.TimestampToSecondsWithTz,
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[]*exprpb.Type{decls.Timestamp, decls.String}, decls.Int),
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decls.NewInstanceOverload(overloads.DurationToSeconds,
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[]*exprpb.Type{decls.Duration}, decls.Int)),
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decls.NewFunction(overloads.TimeGetMilliseconds,
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decls.NewInstanceOverload(overloads.TimestampToMilliseconds,
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[]*exprpb.Type{decls.Timestamp}, decls.Int),
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decls.NewInstanceOverload(overloads.TimestampToMillisecondsWithTz,
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[]*exprpb.Type{decls.Timestamp, decls.String}, decls.Int),
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decls.NewInstanceOverload(overloads.DurationToMilliseconds,
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[]*exprpb.Type{decls.Duration}, decls.Int))}...)
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}
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