IsList returns true if the field is a repeated value. This method will also return true for map values, so check whether the field is also a map.

IsMap returns true if the field is of map type.

IsOptional specifies whether the qualifier is optional. Instead of a direct qualification, an optional qualifier will be resolved via QualifyIfPresent

JSONName returns the JSON name of the field, if present.

KindMatcher returns an ExprMatcher which will return true if the input NavigableExpr.Kind() matches the specified `kind`.

LT mimics (*antlr.InputStream).LT.

MacroCalls returns the map of macro calls currently in the context.

MergeUnknowns combines two unknown values into a new unknown value.

Negate returns the complement of the current value.

NewAST creates an AST from the current expression using the tracked source info which is modified and managed by the OptimizerContext.

NewAccuIdent creates an Expr value representing an accumulator identifier within a comprehension.

NewBuffer returns an efficient implementation of Buffer for the given text based on the ranges of the encoded code points contained within.

NewComprehension creates an Expr value representing a one-variable comprehension over a value range.

NewConstantFoldingOptimizer creates an optimizer which inlines constant scalar an aggregate literal values within function calls and select statements

NewError associates an error message with a given expression id.

NewEvalState returns an EvalState instanced used to observe the intermediate evaluations of an expression.

NewExprVisitor creates a visitor which only visits expression nodes.

NewExtension creates a serializable Extension from a name and version string.

NewFeature creates a new feature flag with a boolean enablement flag.

NewMapEntry creates a MapEntry with a given key, value, and a flag indicating whether the key is optionally set.

NewMemberOverload returns a new serializable representation of a member (receiver) overload.

NewOverload returns a new serializable representation of a global overload.

NewPresenceTest creates an Expr representing a field presence test on an operand expression.

NewUnspecifiedExpr creates an empty expression node.

OverloadExamples configures example expressions for the overload.

PlanProgram generates an evaluable instance of the AST in the go-native representation within the environment (Env).

ProtoToExpr converts a protobuf Expr value to an ast.Expr value.

Push pushes the given activation onto the activation stack and returns the new frame. This operation is internal to the interpreter and is used to ha

RangeMap iterates over the map and calls the provided function for each key-value pair. If the function returns false, the iteration will stop.

Receive implements traits.Receiver.Receive.

ReceiverMacro creates a Macro for a receiver function matching the specified arg count.

ReflectType returns the Golang reflect.Type for this type.

RelativeAttribute creates an attribute whose value is a qualification of a dynamic computation rather than a static variable reference.

ResultType indicates the output type from calling the function.

SetContext sets the context for the execution frame.

SetContextVariable configures the ContextVariable for this configuration.

SetMacroCall sets the macro call metadata for the given macro id within the tracked source info metadata.

SetOffsetRange sets the OffsetRange for the given expression id.

SetStdLib configures the LibrarySubset for the standard library.

StdLibSubset configures the standard library to use a subset of its functions and macros. Since the StdLib is a singleton library, only the first ins

StringSource converts a string and location description to a model.Source.

Functions to assist with CEL execution. compile will parse and check an expression `expr` against a given environment `env` and determine whether the

substitute replaces all direct and indirect occurrences of bound type parameters. Unbound type parameters are replaced by DYN if typeParamToDyn is tru

AddExcludedMacros deny-lists one or more macros by function name.

AddFeatures appends one or more features to the config.

AddIncludedMacros allow-lists one or more macros by function name. Note, this option will override any excluded macros.

AddSerializableOption adds an option to the basic environment that is flagged as YAML compatible.

Attr returns the Attribute value.

Children returns a list of child expression nodes.

ConditionalAttribute creates an attribute with two Attribute branches, where the Attribute that is resolved depends on the boolean evaluation of the i

Consume implements (antlr.CharStream).Consume.

ContextEval evaluates the program with a set of input variables and a context object in order to support cancellation and timeouts. This method must b

CopyExpr creates a deep copy of the input Expr value.

Documentation returns the documentation coded by the DocKind to assist with text formatting.

Equal returns whether the two ref.Value are heterogeneously equivalent.

ErrorRecoveryLimit limits the number of attempts the parser will perform to recover from an error.

EstimateCost estimates the cost of a type checked CEL expression using the length estimates of input data and extension functions provided by estimato

EvalStateObserver provides an observer which records the value associated with the given expression id. EvalState must be provided to the observer.

Extensions returns the set of extensions present in the source.

FindStructFieldNames returns thet field names associated with the type, if the type is found.

FixedSizeEstimate returns a size estimate with a fixed min and max range.

GetFrom returns the accessor method associated with the field on the proto generated struct. If the field is not set, the proto default value is retu

HasIterVar2 returns true if the second iteration variable is non-empty.

Index implements (antlr.CharStream).Index.

IsChecked returns whether the Ast value has been successfully type-checked.

IsSet returns true if the field is defined and set to a non-default value. The method will return false if defined and not set, and an error if the fi

JSONFieldNames configures JSON field name support within the protobuf types in the registry.

Kind indicates general category of the type.

LateFunctionBinding indicates that the function has a binding which is not known at compile time. This is useful for functions which have side-effects

Lists returns a cel.EnvOption to configure extended functions for list manipulation. As a general note, all indices are zero-based. # Distinct Intro

Math returns a cel.EnvOption to configure namespaced math helper macros and functions. Note, all macros use the 'math' namespace; however, at the tim

Name returns the function name in human-readable terms, e.g. 'contains' of 'math.least'

NewCheckedAST wraps an parsed AST and augments it with type and reference metadata.

NewEmptyRegistry returns a registry which is completely unconfigured.

NewIdentReference creates a ReferenceInfo instance for an identifier with an optional constant value.

NewMap creates a CreateStruct instruction for a map where the map is comprised of the optional set of key, value entries.

NewMapEntry creates a Map Entry for the key, value pair.

NewMapEntry creates a Map Entry for the key, value pair.

NewPresenceTest creates a Select TestOnly Expr value for modelling has() semantics.

NewRegistry accepts a list of proto message instances and returns a type provider which can create new instances of the provided message or any messag

Parent returns the parent of the current activation, may be nil. If non-nil, the parent will be searched during resolve calls.

ParseType parses a human readable type string into the protobuf representation.