Class CelParser

java.lang.Object

com.google.mu.cel.CelParser

@Immutable
public final class CelParser
extends Object

Parser for Common Expression Language (CEL) syntax, producing CelExpr AST records.

Use this parser if pattern matching over records (as opposed to protos) is desirable to your use case. It's also about 2x faster than ANTLR-based cel-java parser (as benchmarks show).

Since:

10.7

Constructor Summary

Constructors

Constructor	Description
CelParser()

Method Summary

Modifier and Type	Method	Description
CelExpr	parse(String input)	Parses the given CEL expression.
com.google.api.expr.v1alpha1.ParsedExpr	parseToProto(String input)	Parses the CEL expression and converts it to a ParsedExpr proto.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

CelParser

public CelParser()

Method Details

parse

public CelExpr parse(String input)

Parses the given CEL expression.

parseToProto

public com.google.api.expr.v1alpha1.ParsedExpr parseToProto(String input)

Parses the CEL expression and converts it to a ParsedExpr proto.

The returned ParsedExpr.getSourceInfo() will have positions, line_offsets and macro_calls populated. The caller can also populate the other fields like location and syntax_version if such information is available.