Add CelCompilerTool java binary and compile_cel bzl library#594

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Merged
copybara-service merged 1 commit into from
Feb 13, 2025
Merged

Add CelCompilerTool java binary and compile_cel bzl library #594

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1 change: 1 addition & 0 deletions WORKSPACE
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Original file line numberDiff line numberDiff line change
Expand Up@@ -140,6 +140,7 @@ maven_install(
"com.google.truth.extensions:truth-java8-extension:1.4.4",
"com.google.truth.extensions:truth-proto-extension:1.4.4",
"com.google.truth:truth:1.4.4",
"info.picocli:picocli:4.7.6",
"org.antlr:antlr4-runtime:" + ANTLR4_VERSION,
"org.jspecify:jspecify:1.0.0",
"org.threeten:threeten-extra:1.8.0",
Expand Down
2 changes: 2 additions & 0 deletions common/BUILD.bazel
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Expand Up@@ -39,6 +39,7 @@ java_library(

java_library(
name = "error_codes",
# used_by_android
exports = ["//common/src/main/java/dev/cel/common:error_codes"],
)

Expand DownExpand Up@@ -86,6 +87,7 @@ java_library(

java_library(
name = "cel_exception",
# used_by_android
visibility = ["//visibility:public"],
exports = ["//common/src/main/java/dev/cel/common:cel_exception"],
)
1 change: 1 addition & 0 deletions common/annotations/BUILD.bazel
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Original file line numberDiff line numberDiff line change
Expand Up@@ -7,5 +7,6 @@ package(

java_library(
name = "annotations",
# used_by_android
exports = ["//common/src/main/java/dev/cel/common/annotations"],
)
2 changes: 2 additions & 0 deletions common/internal/BUILD.bazel
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Original file line numberDiff line numberDiff line change
Expand Up@@ -23,6 +23,7 @@ cel_android_library(

java_library(
name = "converter",
# used_by_android
exports = ["//common/src/main/java/dev/cel/common/internal:converter"],
)

Expand DownExpand Up@@ -78,6 +79,7 @@ java_library(

java_library(
name = "safe_string_formatter",
# used_by_android
exports = ["//common/src/main/java/dev/cel/common/internal:safe_string_formatter"],
)

Expand Down
2 changes: 2 additions & 0 deletions common/src/main/java/dev/cel/common/BUILD.bazel
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Expand Up@@ -77,6 +77,7 @@ java_library(
java_library(
name = "cel_exception",
srcs = ["CelException.java"],
# used_by_android
tags = [
],
visibility = ["//visibility:public"],
Expand DownExpand Up@@ -135,6 +136,7 @@ java_library(
java_library(
name = "error_codes",
srcs = ["CelErrorCode.java"],
# used_by_android
tags = [
],
)
Expand Down
1 change: 1 addition & 0 deletions common/src/main/java/dev/cel/common/annotations/BUILD.bazel
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Original file line numberDiff line numberDiff line change
Expand Up@@ -17,6 +17,7 @@ ANNOTATION_SOURCES = [
java_library(
name = "annotations",
srcs = ANNOTATION_SOURCES,
# used_by_android
tags = [
],
)
2 changes: 2 additions & 0 deletions common/src/main/java/dev/cel/common/internal/BUILD.bazel
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Original file line numberDiff line numberDiff line change
Expand Up@@ -100,6 +100,7 @@ java_library(
"BidiConverter.java",
"Converter.java",
],
# used_by_android
tags = [
],
deps = [
Expand DownExpand Up@@ -264,6 +265,7 @@ java_library(
java_library(
name = "safe_string_formatter",
srcs = ["SafeStringFormatter.java"],
# used_by_android
tags = [
],
deps = [
Expand Down
32 changes: 32 additions & 0 deletions compiler/src/main/java/dev/cel/compiler/tools/BUILD.bazel
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@@ -0,0 +1,32 @@
load("@rules_java//java:defs.bzl", "java_binary")

package(
default_applicable_licenses = [
"//:license",
],
default_visibility = [
"//compiler/tools:__pkg__",
],
)

java_binary(
name = "cel_compiler_tool",
srcs = ["CelCompilerTool.java"],
main_class = "dev.cel.compiler.tools.CelCompilerTool",
neverlink = 1,
deps = [
"//common",
"//common:compiler_common",
"//common:options",
"//common:proto_ast",
"//compiler",
"//compiler:compiler_builder",
"//extensions",
"//extensions:optional_library",
"//parser:macro",
"@cel_spec//proto/cel/expr:checked_java_proto",
"@maven//:com_google_guava_guava",
"@maven//:com_google_protobuf_protobuf_java",
"@maven//:info_picocli_picocli",
],
)
138 changes: 138 additions & 0 deletions compiler/src/main/java/dev/cel/compiler/tools/CelCompilerTool.java
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@@ -0,0 +1,138 @@
// Copyright 2025 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package dev.cel.compiler.tools;

import dev.cel.expr.CheckedExpr;
import com.google.common.collect.ImmutableSet;
import com.google.common.io.Files;
import com.google.protobuf.DescriptorProtos.FileDescriptorSet;
import com.google.protobuf.Descriptors.FileDescriptor;
import com.google.protobuf.ExtensionRegistry;
import dev.cel.common.CelAbstractSyntaxTree;
import dev.cel.common.CelDescriptorUtil;
import dev.cel.common.CelOptions;
import dev.cel.common.CelProtoAbstractSyntaxTree;
import dev.cel.common.CelValidationException;
import dev.cel.compiler.CelCompiler;
import dev.cel.compiler.CelCompilerBuilder;
import dev.cel.compiler.CelCompilerFactory;
import dev.cel.extensions.CelExtensions;
import dev.cel.extensions.CelOptionalLibrary;
import dev.cel.parser.CelStandardMacro;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.concurrent.Callable;
import picocli.CommandLine;
import picocli.CommandLine.Option;

/**
* CelCompilerTool is a binary that takes a CEL expression in string, compiles it into a
* dev.cel.expr.CheckedExpr protobuf message, then writes the content to a .binary pb file.
*/
final class CelCompilerTool implements Callable<Integer> {

@Option(
names = {"--cel_expression"},
description = "CEL expression")
private String celExpression = "";

@Option(
names = {"--transitive_descriptor_set"},
description = "Path to the transitive set of descriptors")
private String transitiveDescriptorSetPath = "";

@Option(
names = {"--output"},
description = "Output path for the compiled binarypb")
private String output = "";

private static final CelOptions CEL_OPTIONS = CelOptions.DEFAULT;

private static FileDescriptorSet load(String descriptorSetPath) {
try {
byte[] descriptorBytes = Files.toByteArray(new File(descriptorSetPath));
return FileDescriptorSet.parseFrom(descriptorBytes, ExtensionRegistry.getEmptyRegistry());
} catch (IOException e) {
throw new IllegalArgumentException(
"Failed to load FileDescriptorSet from path: " + descriptorSetPath, e);
}
}

private static CelAbstractSyntaxTree compile(
String expression, String transitiveDescriptorSetPath) throws CelValidationException {
CelCompilerBuilder compilerBuilder =
CelCompilerFactory.standardCelCompilerBuilder()
.setOptions(CEL_OPTIONS)
.setStandardMacros(CelStandardMacro.STANDARD_MACROS)
.addLibraries(
CelExtensions.bindings(),
CelExtensions.encoders(),
CelExtensions.math(CEL_OPTIONS),
CelExtensions.lists(),
CelExtensions.protos(),
CelExtensions.strings(),
CelOptionalLibrary.INSTANCE);
if (!transitiveDescriptorSetPath.isEmpty()) {
ImmutableSet<FileDescriptor> transitiveFileDescriptors =
CelDescriptorUtil.getFileDescriptorsFromFileDescriptorSet(
load(transitiveDescriptorSetPath));
compilerBuilder.addFileTypes(transitiveFileDescriptors);
}

CelCompiler celCompiler = compilerBuilder.build();

return celCompiler.compile(expression).getAst();
}

private static void writeCheckedExpr(CelAbstractSyntaxTree ast, String filePath)
throws IOException {
CheckedExpr checkedExpr = CelProtoAbstractSyntaxTree.fromCelAst(ast).toCheckedExpr();
Path path = Paths.get(filePath);
try (FileOutputStream output = new FileOutputStream(path.toFile())) {
checkedExpr.writeTo(output);
}
}

@Override
public Integer call() {
try {
CelAbstractSyntaxTree ast = compile(celExpression, transitiveDescriptorSetPath);
writeCheckedExpr(ast, output);
} catch (Exception e) {
String errorMessage =
String.format(
"Expression [%s] failed to compile. Reason: %s", celExpression, e.getMessage());
System.err.print(errorMessage);
return -1;
}

return 0;
}

public static void main(String[] args) {
CelCompilerTool compilerTool = new CelCompilerTool();
CommandLine cmd = new CommandLine(compilerTool);
cmd.setTrimQuotes(false);
cmd.parseArgs(args);

int exitCode = cmd.execute(args);
System.exit(exitCode);
}

CelCompilerTool() {}
}
69 changes: 69 additions & 0 deletions compiler/src/test/java/dev/cel/compiler/tools/BUILD.bazel
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@@ -0,0 +1,69 @@
load("@rules_java//java:defs.bzl", "java_library")
load("//:testing.bzl", "junit4_test_suites")
load("//compiler/tools:compile_cel.bzl", "compile_cel")

package(default_applicable_licenses = [
"//:license",
])

compile_cel(
name = "compiled_hello_world",
expression = "'hello world'",
)

compile_cel(
name = "compiled_comprehension",
expression = "[1,2,3].map(x, x + 1)",
)

compile_cel(
name = "compiled_proto_message",
expression = "cel.expr.conformance.proto2.TestAllTypes{single_int32: 1}",
proto_srcs = ["@cel_spec//proto/cel/expr/conformance/proto2:test_all_types_proto"],
)

compile_cel(
name = "compiled_extensions",
expression = "cel.bind(x, 10, math.greatest([1,x])) < int(' 11 '.trim()) && optional.none().orValue(true) && [].flatten() == []",
proto_srcs = ["@cel_spec//proto/cel/expr/conformance/proto2:test_all_types_proto"],
)

filegroup(
name = "compiled_exprs",
srcs = [
":compiled_comprehension",
":compiled_extensions",
":compiled_hello_world",
":compiled_proto_message",
],
)

java_library(
name = "tests",
testonly = True,
srcs = glob(["*Test.java"]),
resources = [":compiled_exprs"],
deps = [
"//:java_truth",
"//common:cel_ast",
"//common:options",
"//common:proto_ast",
"//extensions",
"//extensions:optional_library",
"//runtime",
"@cel_spec//proto/cel/expr:checked_java_proto",
"@cel_spec//proto/cel/expr/conformance/proto2:test_all_types_java_proto",
"@maven//:com_google_guava_guava",
"@maven//:com_google_protobuf_protobuf_java",
"@maven//:junit_junit",
],
)

junit4_test_suites(
name = "test_suites",
sizes = [
"small",
],
src_dir = "src/test/java",
deps = [":tests"],
)
Loading
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

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Add CelCompilerTool java binary and compile_cel bzl library#594

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Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

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privacy statement. We’ll occasionally send you account related emails.

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Sign in
to your account

 Merged

copybara-service
merged 1 commit into

from

Feb 13, 2025
 Merged


Add CelCompilerTool java binary and compile_cel bzl library
#594
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1 change: 1 addition & 0 deletions
WORKSPACE

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -140,6 +140,7 @@ maven_install(
 "com.google.truth.extensions:truth-java8-extension:1.4.4",
 "com.google.truth.extensions:truth-proto-extension:1.4.4",
 "com.google.truth:truth:1.4.4",
 "info.picocli:picocli:4.7.6",
 "org.antlr:antlr4-runtime:" + ANTLR4_VERSION,
 "org.jspecify:jspecify:1.0.0",
 "org.threeten:threeten-extra:1.8.0",
Expand Down

2 changes: 2 additions & 0 deletions
common/BUILD.bazel

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Original file line numberDiff line numberDiff line change
Expand Up@@ -39,6 +39,7 @@ java_library(

java_library(
 name = "error_codes",
 # used_by_android
 exports = ["//common/src/main/java/dev/cel/common:error_codes"],
)

Expand DownExpand Up@@ -86,6 +87,7 @@ java_library(

java_library(
 name = "cel_exception",
 # used_by_android
 visibility = ["//visibility:public"],
 exports = ["//common/src/main/java/dev/cel/common:cel_exception"],
)

1 change: 1 addition & 0 deletions
common/annotations/BUILD.bazel

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Original file line numberDiff line numberDiff line change
Expand Up@@ -7,5 +7,6 @@ package(

java_library(
 name = "annotations",
 # used_by_android
 exports = ["//common/src/main/java/dev/cel/common/annotations"],
)

2 changes: 2 additions & 0 deletions
common/internal/BUILD.bazel

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Original file line numberDiff line numberDiff line change
Expand Up@@ -23,6 +23,7 @@ cel_android_library(

java_library(
 name = "converter",
 # used_by_android
 exports = ["//common/src/main/java/dev/cel/common/internal:converter"],
)

Expand DownExpand Up@@ -78,6 +79,7 @@ java_library(

java_library(
 name = "safe_string_formatter",
 # used_by_android
 exports = ["//common/src/main/java/dev/cel/common/internal:safe_string_formatter"],
)

Expand Down

2 changes: 2 additions & 0 deletions
common/src/main/java/dev/cel/common/BUILD.bazel

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Original file line numberDiff line numberDiff line change
Expand Up@@ -77,6 +77,7 @@ java_library(
java_library(
 name = "cel_exception",
 srcs = ["CelException.java"],
 # used_by_android
 tags = [
 ],
 visibility = ["//visibility:public"],
Expand DownExpand Up@@ -135,6 +136,7 @@ java_library(
java_library(
 name = "error_codes",
 srcs = ["CelErrorCode.java"],
 # used_by_android
 tags = [
 ],
)
Expand Down

1 change: 1 addition & 0 deletions
common/src/main/java/dev/cel/common/annotations/BUILD.bazel

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Expand Up@@ -17,6 +17,7 @@ ANNOTATION_SOURCES = [
java_library(
 name = "annotations",
 srcs = ANNOTATION_SOURCES,
 # used_by_android
 tags = [
 ],
)

2 changes: 2 additions & 0 deletions
common/src/main/java/dev/cel/common/internal/BUILD.bazel

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Original file line numberDiff line numberDiff line change
Expand Up@@ -100,6 +100,7 @@ java_library(
 "BidiConverter.java",
 "Converter.java",
 ],
 # used_by_android
 tags = [
 ],
 deps = [
Expand DownExpand Up@@ -264,6 +265,7 @@ java_library(
java_library(
 name = "safe_string_formatter",
 srcs = ["SafeStringFormatter.java"],
 # used_by_android
 tags = [
 ],
 deps = [
Expand Down

32 changes: 32 additions & 0 deletions
compiler/src/main/java/dev/cel/compiler/tools/BUILD.bazel

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@@ -0,0 +1,32 @@
load("@rules_java//java:defs.bzl", "java_binary")

package(
 default_applicable_licenses = [
 "//:license",
 ],
 default_visibility = [
 "//compiler/tools:__pkg__",
 ],
)

java_binary(
 name = "cel_compiler_tool",
 srcs = ["CelCompilerTool.java"],
 main_class = "dev.cel.compiler.tools.CelCompilerTool",
 neverlink = 1,
 deps = [
 "//common",
 "//common:compiler_common",
 "//common:options",
 "//common:proto_ast",
 "//compiler",
 "//compiler:compiler_builder",
 "//extensions",
 "//extensions:optional_library",
 "//parser:macro",
 "@cel_spec//proto/cel/expr:checked_java_proto",
 "@maven//:com_google_guava_guava",
 "@maven//:com_google_protobuf_protobuf_java",
 "@maven//:info_picocli_picocli",
 ],
)

138 changes: 138 additions & 0 deletions
compiler/src/main/java/dev/cel/compiler/tools/CelCompilerTool.java

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// Copyright 2025 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package dev.cel.compiler.tools;

import dev.cel.expr.CheckedExpr;
import com.google.common.collect.ImmutableSet;
import com.google.common.io.Files;
import com.google.protobuf.DescriptorProtos.FileDescriptorSet;
import com.google.protobuf.Descriptors.FileDescriptor;
import com.google.protobuf.ExtensionRegistry;
import dev.cel.common.CelAbstractSyntaxTree;
import dev.cel.common.CelDescriptorUtil;
import dev.cel.common.CelOptions;
import dev.cel.common.CelProtoAbstractSyntaxTree;
import dev.cel.common.CelValidationException;
import dev.cel.compiler.CelCompiler;
import dev.cel.compiler.CelCompilerBuilder;
import dev.cel.compiler.CelCompilerFactory;
import dev.cel.extensions.CelExtensions;
import dev.cel.extensions.CelOptionalLibrary;
import dev.cel.parser.CelStandardMacro;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.concurrent.Callable;
import picocli.CommandLine;
import picocli.CommandLine.Option;

/**
 * CelCompilerTool is a binary that takes a CEL expression in string, compiles it into a
 * dev.cel.expr.CheckedExpr protobuf message, then writes the content to a .binary pb file.
 */
final class CelCompilerTool implements Callable<Integer> {

 @Option(
 names = {"--cel_expression"},
 description = "CEL expression")
 private String celExpression = "";

 @Option(
 names = {"--transitive_descriptor_set"},
 description = "Path to the transitive set of descriptors")
 private String transitiveDescriptorSetPath = "";

 @Option(
 names = {"--output"},
 description = "Output path for the compiled binarypb")
 private String output = "";

 private static final CelOptions CEL_OPTIONS = CelOptions.DEFAULT;

 private static FileDescriptorSet load(String descriptorSetPath) {
 try {
 byte[] descriptorBytes = Files.toByteArray(new File(descriptorSetPath));
 return FileDescriptorSet.parseFrom(descriptorBytes, ExtensionRegistry.getEmptyRegistry());
 } catch (IOException e) {
 throw new IllegalArgumentException(
 "Failed to load FileDescriptorSet from path: " + descriptorSetPath, e);
 }
 }

 private static CelAbstractSyntaxTree compile(
 String expression, String transitiveDescriptorSetPath) throws CelValidationException {
 CelCompilerBuilder compilerBuilder =
 CelCompilerFactory.standardCelCompilerBuilder()
 .setOptions(CEL_OPTIONS)
 .setStandardMacros(CelStandardMacro.STANDARD_MACROS)
 .addLibraries(
 CelExtensions.bindings(),
 CelExtensions.encoders(),
 CelExtensions.math(CEL_OPTIONS),
 CelExtensions.lists(),
 CelExtensions.protos(),
 CelExtensions.strings(),
 CelOptionalLibrary.INSTANCE);
 if (!transitiveDescriptorSetPath.isEmpty()) {
 ImmutableSet<FileDescriptor> transitiveFileDescriptors =
 CelDescriptorUtil.getFileDescriptorsFromFileDescriptorSet(
 load(transitiveDescriptorSetPath));
 compilerBuilder.addFileTypes(transitiveFileDescriptors);
 }

 CelCompiler celCompiler = compilerBuilder.build();

 return celCompiler.compile(expression).getAst();
 }

 private static void writeCheckedExpr(CelAbstractSyntaxTree ast, String filePath)
 throws IOException {
 CheckedExpr checkedExpr = CelProtoAbstractSyntaxTree.fromCelAst(ast).toCheckedExpr();
 Path path = Paths.get(filePath);
 try (FileOutputStream output = new FileOutputStream(path.toFile())) {
 checkedExpr.writeTo(output);
 }
 }

 @Override
 public Integer call() {
 try {
 CelAbstractSyntaxTree ast = compile(celExpression, transitiveDescriptorSetPath);
 writeCheckedExpr(ast, output);
 } catch (Exception e) {
 String errorMessage =
 String.format(
 "Expression [%s] failed to compile. Reason: %s", celExpression, e.getMessage());
 System.err.print(errorMessage);
 return -1;
 }

 return 0;
 }

 public static void main(String[] args) {
 CelCompilerTool compilerTool = new CelCompilerTool();
 CommandLine cmd = new CommandLine(compilerTool);
 cmd.setTrimQuotes(false);
 cmd.parseArgs(args);

 int exitCode = cmd.execute(args);
 System.exit(exitCode);
 }

 CelCompilerTool() {}
}

69 changes: 69 additions & 0 deletions
compiler/src/test/java/dev/cel/compiler/tools/BUILD.bazel

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load("@rules_java//java:defs.bzl", "java_library")
load("//:testing.bzl", "junit4_test_suites")
load("//compiler/tools:compile_cel.bzl", "compile_cel")

package(default_applicable_licenses = [
 "//:license",
])

compile_cel(
 name = "compiled_hello_world",
 expression = "'hello world'",
)

compile_cel(
 name = "compiled_comprehension",
 expression = "[1,2,3].map(x, x + 1)",
)

compile_cel(
 name = "compiled_proto_message",
 expression = "cel.expr.conformance.proto2.TestAllTypes{single_int32: 1}",
 proto_srcs = ["@cel_spec//proto/cel/expr/conformance/proto2:test_all_types_proto"],
)

compile_cel(
 name = "compiled_extensions",
 expression = "cel.bind(x, 10, math.greatest([1,x])) < int(' 11 '.trim()) && optional.none().orValue(true) && [].flatten() == []",
 proto_srcs = ["@cel_spec//proto/cel/expr/conformance/proto2:test_all_types_proto"],
)

filegroup(
 name = "compiled_exprs",
 srcs = [
 ":compiled_comprehension",
 ":compiled_extensions",
 ":compiled_hello_world",
 ":compiled_proto_message",
 ],
)

java_library(
 name = "tests",
 testonly = True,
 srcs = glob(["*Test.java"]),
 resources = [":compiled_exprs"],
 deps = [
 "//:java_truth",
 "//common:cel_ast",
 "//common:options",
 "//common:proto_ast",
 "//extensions",
 "//extensions:optional_library",
 "//runtime",
 "@cel_spec//proto/cel/expr:checked_java_proto",
 "@cel_spec//proto/cel/expr/conformance/proto2:test_all_types_java_proto",
 "@maven//:com_google_guava_guava",
 "@maven//:com_google_protobuf_protobuf_java",
 "@maven//:junit_junit",
 ],
)

junit4_test_suites(
 name = "test_suites",
 sizes = [
 "small",
 ],
 src_dir = "src/test/java",
 deps = [":tests"],
)
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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Add CelCompilerTool java binary and compile_cel bzl library#594

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 Merged

copybara-service
merged 1 commit into

from

Feb 13, 2025
 Merged


Add CelCompilerTool java binary and compile_cel bzl library
#594
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1 change: 1 addition & 0 deletions
WORKSPACE

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Original file line numberDiff line numberDiff line change
Expand Up@@ -140,6 +140,7 @@ maven_install(
 "com.google.truth.extensions:truth-java8-extension:1.4.4",
 "com.google.truth.extensions:truth-proto-extension:1.4.4",
 "com.google.truth:truth:1.4.4",
 "info.picocli:picocli:4.7.6",
 "org.antlr:antlr4-runtime:" + ANTLR4_VERSION,
 "org.jspecify:jspecify:1.0.0",
 "org.threeten:threeten-extra:1.8.0",
Expand Down

2 changes: 2 additions & 0 deletions
common/BUILD.bazel

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Original file line numberDiff line numberDiff line change
Expand Up@@ -39,6 +39,7 @@ java_library(

java_library(
 name = "error_codes",
 # used_by_android
 exports = ["//common/src/main/java/dev/cel/common:error_codes"],
)

Expand DownExpand Up@@ -86,6 +87,7 @@ java_library(

java_library(
 name = "cel_exception",
 # used_by_android
 visibility = ["//visibility:public"],
 exports = ["//common/src/main/java/dev/cel/common:cel_exception"],
)

1 change: 1 addition & 0 deletions
common/annotations/BUILD.bazel

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Original file line numberDiff line numberDiff line change
Expand Up@@ -7,5 +7,6 @@ package(

java_library(
 name = "annotations",
 # used_by_android
 exports = ["//common/src/main/java/dev/cel/common/annotations"],
)

2 changes: 2 additions & 0 deletions
common/internal/BUILD.bazel

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -23,6 +23,7 @@ cel_android_library(

java_library(
 name = "converter",
 # used_by_android
 exports = ["//common/src/main/java/dev/cel/common/internal:converter"],
)

Expand DownExpand Up@@ -78,6 +79,7 @@ java_library(

java_library(
 name = "safe_string_formatter",
 # used_by_android
 exports = ["//common/src/main/java/dev/cel/common/internal:safe_string_formatter"],
)

Expand Down

2 changes: 2 additions & 0 deletions
common/src/main/java/dev/cel/common/BUILD.bazel

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Original file line numberDiff line numberDiff line change
Expand Up@@ -77,6 +77,7 @@ java_library(
java_library(
 name = "cel_exception",
 srcs = ["CelException.java"],
 # used_by_android
 tags = [
 ],
 visibility = ["//visibility:public"],
Expand DownExpand Up@@ -135,6 +136,7 @@ java_library(
java_library(
 name = "error_codes",
 srcs = ["CelErrorCode.java"],
 # used_by_android
 tags = [
 ],
)
Expand Down

1 change: 1 addition & 0 deletions
common/src/main/java/dev/cel/common/annotations/BUILD.bazel

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Original file line numberDiff line numberDiff line change
Expand Up@@ -17,6 +17,7 @@ ANNOTATION_SOURCES = [
java_library(
 name = "annotations",
 srcs = ANNOTATION_SOURCES,
 # used_by_android
 tags = [
 ],
)

2 changes: 2 additions & 0 deletions
common/src/main/java/dev/cel/common/internal/BUILD.bazel

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Original file line numberDiff line numberDiff line change
Expand Up@@ -100,6 +100,7 @@ java_library(
 "BidiConverter.java",
 "Converter.java",
 ],
 # used_by_android
 tags = [
 ],
 deps = [
Expand DownExpand Up@@ -264,6 +265,7 @@ java_library(
java_library(
 name = "safe_string_formatter",
 srcs = ["SafeStringFormatter.java"],
 # used_by_android
 tags = [
 ],
 deps = [
Expand Down

32 changes: 32 additions & 0 deletions
compiler/src/main/java/dev/cel/compiler/tools/BUILD.bazel

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@@ -0,0 +1,32 @@
load("@rules_java//java:defs.bzl", "java_binary")

package(
 default_applicable_licenses = [
 "//:license",
 ],
 default_visibility = [
 "//compiler/tools:__pkg__",
 ],
)

java_binary(
 name = "cel_compiler_tool",
 srcs = ["CelCompilerTool.java"],
 main_class = "dev.cel.compiler.tools.CelCompilerTool",
 neverlink = 1,
 deps = [
 "//common",
 "//common:compiler_common",
 "//common:options",
 "//common:proto_ast",
 "//compiler",
 "//compiler:compiler_builder",
 "//extensions",
 "//extensions:optional_library",
 "//parser:macro",
 "@cel_spec//proto/cel/expr:checked_java_proto",
 "@maven//:com_google_guava_guava",
 "@maven//:com_google_protobuf_protobuf_java",
 "@maven//:info_picocli_picocli",
 ],
)

138 changes: 138 additions & 0 deletions
compiler/src/main/java/dev/cel/compiler/tools/CelCompilerTool.java

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@@ -0,0 +1,138 @@
// Copyright 2025 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package dev.cel.compiler.tools;

import dev.cel.expr.CheckedExpr;
import com.google.common.collect.ImmutableSet;
import com.google.common.io.Files;
import com.google.protobuf.DescriptorProtos.FileDescriptorSet;
import com.google.protobuf.Descriptors.FileDescriptor;
import com.google.protobuf.ExtensionRegistry;
import dev.cel.common.CelAbstractSyntaxTree;
import dev.cel.common.CelDescriptorUtil;
import dev.cel.common.CelOptions;
import dev.cel.common.CelProtoAbstractSyntaxTree;
import dev.cel.common.CelValidationException;
import dev.cel.compiler.CelCompiler;
import dev.cel.compiler.CelCompilerBuilder;
import dev.cel.compiler.CelCompilerFactory;
import dev.cel.extensions.CelExtensions;
import dev.cel.extensions.CelOptionalLibrary;
import dev.cel.parser.CelStandardMacro;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.concurrent.Callable;
import picocli.CommandLine;
import picocli.CommandLine.Option;

/**
 * CelCompilerTool is a binary that takes a CEL expression in string, compiles it into a
 * dev.cel.expr.CheckedExpr protobuf message, then writes the content to a .binary pb file.
 */
final class CelCompilerTool implements Callable<Integer> {

 @Option(
 names = {"--cel_expression"},
 description = "CEL expression")
 private String celExpression = "";

 @Option(
 names = {"--transitive_descriptor_set"},
 description = "Path to the transitive set of descriptors")
 private String transitiveDescriptorSetPath = "";

 @Option(
 names = {"--output"},
 description = "Output path for the compiled binarypb")
 private String output = "";

 private static final CelOptions CEL_OPTIONS = CelOptions.DEFAULT;

 private static FileDescriptorSet load(String descriptorSetPath) {
 try {
 byte[] descriptorBytes = Files.toByteArray(new File(descriptorSetPath));
 return FileDescriptorSet.parseFrom(descriptorBytes, ExtensionRegistry.getEmptyRegistry());
 } catch (IOException e) {
 throw new IllegalArgumentException(
 "Failed to load FileDescriptorSet from path: " + descriptorSetPath, e);
 }
 }

 private static CelAbstractSyntaxTree compile(
 String expression, String transitiveDescriptorSetPath) throws CelValidationException {
 CelCompilerBuilder compilerBuilder =
 CelCompilerFactory.standardCelCompilerBuilder()
 .setOptions(CEL_OPTIONS)
 .setStandardMacros(CelStandardMacro.STANDARD_MACROS)
 .addLibraries(
 CelExtensions.bindings(),
 CelExtensions.encoders(),
 CelExtensions.math(CEL_OPTIONS),
 CelExtensions.lists(),
 CelExtensions.protos(),
 CelExtensions.strings(),
 CelOptionalLibrary.INSTANCE);
 if (!transitiveDescriptorSetPath.isEmpty()) {
 ImmutableSet<FileDescriptor> transitiveFileDescriptors =
 CelDescriptorUtil.getFileDescriptorsFromFileDescriptorSet(
 load(transitiveDescriptorSetPath));
 compilerBuilder.addFileTypes(transitiveFileDescriptors);
 }

 CelCompiler celCompiler = compilerBuilder.build();

 return celCompiler.compile(expression).getAst();
 }

 private static void writeCheckedExpr(CelAbstractSyntaxTree ast, String filePath)
 throws IOException {
 CheckedExpr checkedExpr = CelProtoAbstractSyntaxTree.fromCelAst(ast).toCheckedExpr();
 Path path = Paths.get(filePath);
 try (FileOutputStream output = new FileOutputStream(path.toFile())) {
 checkedExpr.writeTo(output);
 }
 }

 @Override
 public Integer call() {
 try {
 CelAbstractSyntaxTree ast = compile(celExpression, transitiveDescriptorSetPath);
 writeCheckedExpr(ast, output);
 } catch (Exception e) {
 String errorMessage =
 String.format(
 "Expression [%s] failed to compile. Reason: %s", celExpression, e.getMessage());
 System.err.print(errorMessage);
 return -1;
 }

 return 0;
 }

 public static void main(String[] args) {
 CelCompilerTool compilerTool = new CelCompilerTool();
 CommandLine cmd = new CommandLine(compilerTool);
 cmd.setTrimQuotes(false);
 cmd.parseArgs(args);

 int exitCode = cmd.execute(args);
 System.exit(exitCode);
 }

 CelCompilerTool() {}
}

69 changes: 69 additions & 0 deletions
compiler/src/test/java/dev/cel/compiler/tools/BUILD.bazel

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,69 @@
load("@rules_java//java:defs.bzl", "java_library")
load("//:testing.bzl", "junit4_test_suites")
load("//compiler/tools:compile_cel.bzl", "compile_cel")

package(default_applicable_licenses = [
 "//:license",
])

compile_cel(
 name = "compiled_hello_world",
 expression = "'hello world'",
)

compile_cel(
 name = "compiled_comprehension",
 expression = "[1,2,3].map(x, x + 1)",
)

compile_cel(
 name = "compiled_proto_message",
 expression = "cel.expr.conformance.proto2.TestAllTypes{single_int32: 1}",
 proto_srcs = ["@cel_spec//proto/cel/expr/conformance/proto2:test_all_types_proto"],
)

compile_cel(
 name = "compiled_extensions",
 expression = "cel.bind(x, 10, math.greatest([1,x])) < int(' 11 '.trim()) && optional.none().orValue(true) && [].flatten() == []",
 proto_srcs = ["@cel_spec//proto/cel/expr/conformance/proto2:test_all_types_proto"],
)

filegroup(
 name = "compiled_exprs",
 srcs = [
 ":compiled_comprehension",
 ":compiled_extensions",
 ":compiled_hello_world",
 ":compiled_proto_message",
 ],
)

java_library(
 name = "tests",
 testonly = True,
 srcs = glob(["*Test.java"]),
 resources = [":compiled_exprs"],
 deps = [
 "//:java_truth",
 "//common:cel_ast",
 "//common:options",
 "//common:proto_ast",
 "//extensions",
 "//extensions:optional_library",
 "//runtime",
 "@cel_spec//proto/cel/expr:checked_java_proto",
 "@cel_spec//proto/cel/expr/conformance/proto2:test_all_types_java_proto",
 "@maven//:com_google_guava_guava",
 "@maven//:com_google_protobuf_protobuf_java",
 "@maven//:junit_junit",
 ],
)

junit4_test_suites(
 name = "test_suites",
 sizes = [
 "small",
 ],
 src_dir = "src/test/java",
 deps = [":tests"],
)
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
Add CelCompilerTool java binary and compile_cel bzl library#594

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Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

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to your account

 Merged

copybara-service
merged 1 commit into

from

Feb 13, 2025
 Merged


Add CelCompilerTool java binary and compile_cel bzl library
#594
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1 change: 1 addition & 0 deletions
WORKSPACE

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -140,6 +140,7 @@ maven_install(
 "com.google.truth.extensions:truth-java8-extension:1.4.4",
 "com.google.truth.extensions:truth-proto-extension:1.4.4",
 "com.google.truth:truth:1.4.4",
 "info.picocli:picocli:4.7.6",
 "org.antlr:antlr4-runtime:" + ANTLR4_VERSION,
 "org.jspecify:jspecify:1.0.0",
 "org.threeten:threeten-extra:1.8.0",
Expand Down

2 changes: 2 additions & 0 deletions
common/BUILD.bazel

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Original file line numberDiff line numberDiff line change
Expand Up@@ -39,6 +39,7 @@ java_library(

java_library(
 name = "error_codes",
 # used_by_android
 exports = ["//common/src/main/java/dev/cel/common:error_codes"],
)

Expand DownExpand Up@@ -86,6 +87,7 @@ java_library(

java_library(
 name = "cel_exception",
 # used_by_android
 visibility = ["//visibility:public"],
 exports = ["//common/src/main/java/dev/cel/common:cel_exception"],
)

1 change: 1 addition & 0 deletions
common/annotations/BUILD.bazel

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -7,5 +7,6 @@ package(

java_library(
 name = "annotations",
 # used_by_android
 exports = ["//common/src/main/java/dev/cel/common/annotations"],
)

2 changes: 2 additions & 0 deletions
common/internal/BUILD.bazel

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -23,6 +23,7 @@ cel_android_library(

java_library(
 name = "converter",
 # used_by_android
 exports = ["//common/src/main/java/dev/cel/common/internal:converter"],
)

Expand DownExpand Up@@ -78,6 +79,7 @@ java_library(

java_library(
 name = "safe_string_formatter",
 # used_by_android
 exports = ["//common/src/main/java/dev/cel/common/internal:safe_string_formatter"],
)

Expand Down

2 changes: 2 additions & 0 deletions
common/src/main/java/dev/cel/common/BUILD.bazel

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -77,6 +77,7 @@ java_library(
java_library(
 name = "cel_exception",
 srcs = ["CelException.java"],
 # used_by_android
 tags = [
 ],
 visibility = ["//visibility:public"],
Expand DownExpand Up@@ -135,6 +136,7 @@ java_library(
java_library(
 name = "error_codes",
 srcs = ["CelErrorCode.java"],
 # used_by_android
 tags = [
 ],
)
Expand Down

1 change: 1 addition & 0 deletions
common/src/main/java/dev/cel/common/annotations/BUILD.bazel

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Original file line numberDiff line numberDiff line change
Expand Up@@ -17,6 +17,7 @@ ANNOTATION_SOURCES = [
java_library(
 name = "annotations",
 srcs = ANNOTATION_SOURCES,
 # used_by_android
 tags = [
 ],
)

2 changes: 2 additions & 0 deletions
common/src/main/java/dev/cel/common/internal/BUILD.bazel

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -100,6 +100,7 @@ java_library(
 "BidiConverter.java",
 "Converter.java",
 ],
 # used_by_android
 tags = [
 ],
 deps = [
Expand DownExpand Up@@ -264,6 +265,7 @@ java_library(
java_library(
 name = "safe_string_formatter",
 srcs = ["SafeStringFormatter.java"],
 # used_by_android
 tags = [
 ],
 deps = [
Expand Down

32 changes: 32 additions & 0 deletions
compiler/src/main/java/dev/cel/compiler/tools/BUILD.bazel

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,32 @@
load("@rules_java//java:defs.bzl", "java_binary")

package(
 default_applicable_licenses = [
 "//:license",
 ],
 default_visibility = [
 "//compiler/tools:__pkg__",
 ],
)

java_binary(
 name = "cel_compiler_tool",
 srcs = ["CelCompilerTool.java"],
 main_class = "dev.cel.compiler.tools.CelCompilerTool",
 neverlink = 1,
 deps = [
 "//common",
 "//common:compiler_common",
 "//common:options",
 "//common:proto_ast",
 "//compiler",
 "//compiler:compiler_builder",
 "//extensions",
 "//extensions:optional_library",
 "//parser:macro",
 "@cel_spec//proto/cel/expr:checked_java_proto",
 "@maven//:com_google_guava_guava",
 "@maven//:com_google_protobuf_protobuf_java",
 "@maven//:info_picocli_picocli",
 ],
)

138 changes: 138 additions & 0 deletions
compiler/src/main/java/dev/cel/compiler/tools/CelCompilerTool.java

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@@ -0,0 +1,138 @@
// Copyright 2025 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package dev.cel.compiler.tools;

import dev.cel.expr.CheckedExpr;
import com.google.common.collect.ImmutableSet;
import com.google.common.io.Files;
import com.google.protobuf.DescriptorProtos.FileDescriptorSet;
import com.google.protobuf.Descriptors.FileDescriptor;
import com.google.protobuf.ExtensionRegistry;
import dev.cel.common.CelAbstractSyntaxTree;
import dev.cel.common.CelDescriptorUtil;
import dev.cel.common.CelOptions;
import dev.cel.common.CelProtoAbstractSyntaxTree;
import dev.cel.common.CelValidationException;
import dev.cel.compiler.CelCompiler;
import dev.cel.compiler.CelCompilerBuilder;
import dev.cel.compiler.CelCompilerFactory;
import dev.cel.extensions.CelExtensions;
import dev.cel.extensions.CelOptionalLibrary;
import dev.cel.parser.CelStandardMacro;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.concurrent.Callable;
import picocli.CommandLine;
import picocli.CommandLine.Option;

/**
 * CelCompilerTool is a binary that takes a CEL expression in string, compiles it into a
 * dev.cel.expr.CheckedExpr protobuf message, then writes the content to a .binary pb file.
 */
final class CelCompilerTool implements Callable<Integer> {

 @Option(
 names = {"--cel_expression"},
 description = "CEL expression")
 private String celExpression = "";

 @Option(
 names = {"--transitive_descriptor_set"},
 description = "Path to the transitive set of descriptors")
 private String transitiveDescriptorSetPath = "";

 @Option(
 names = {"--output"},
 description = "Output path for the compiled binarypb")
 private String output = "";

 private static final CelOptions CEL_OPTIONS = CelOptions.DEFAULT;

 private static FileDescriptorSet load(String descriptorSetPath) {
 try {
 byte[] descriptorBytes = Files.toByteArray(new File(descriptorSetPath));
 return FileDescriptorSet.parseFrom(descriptorBytes, ExtensionRegistry.getEmptyRegistry());
 } catch (IOException e) {
 throw new IllegalArgumentException(
 "Failed to load FileDescriptorSet from path: " + descriptorSetPath, e);
 }
 }

 private static CelAbstractSyntaxTree compile(
 String expression, String transitiveDescriptorSetPath) throws CelValidationException {
 CelCompilerBuilder compilerBuilder =
 CelCompilerFactory.standardCelCompilerBuilder()
 .setOptions(CEL_OPTIONS)
 .setStandardMacros(CelStandardMacro.STANDARD_MACROS)
 .addLibraries(
 CelExtensions.bindings(),
 CelExtensions.encoders(),
 CelExtensions.math(CEL_OPTIONS),
 CelExtensions.lists(),
 CelExtensions.protos(),
 CelExtensions.strings(),
 CelOptionalLibrary.INSTANCE);
 if (!transitiveDescriptorSetPath.isEmpty()) {
 ImmutableSet<FileDescriptor> transitiveFileDescriptors =
 CelDescriptorUtil.getFileDescriptorsFromFileDescriptorSet(
 load(transitiveDescriptorSetPath));
 compilerBuilder.addFileTypes(transitiveFileDescriptors);
 }

 CelCompiler celCompiler = compilerBuilder.build();

 return celCompiler.compile(expression).getAst();
 }

 private static void writeCheckedExpr(CelAbstractSyntaxTree ast, String filePath)
 throws IOException {
 CheckedExpr checkedExpr = CelProtoAbstractSyntaxTree.fromCelAst(ast).toCheckedExpr();
 Path path = Paths.get(filePath);
 try (FileOutputStream output = new FileOutputStream(path.toFile())) {
 checkedExpr.writeTo(output);
 }
 }

 @Override
 public Integer call() {
 try {
 CelAbstractSyntaxTree ast = compile(celExpression, transitiveDescriptorSetPath);
 writeCheckedExpr(ast, output);
 } catch (Exception e) {
 String errorMessage =
 String.format(
 "Expression [%s] failed to compile. Reason: %s", celExpression, e.getMessage());
 System.err.print(errorMessage);
 return -1;
 }

 return 0;
 }

 public static void main(String[] args) {
 CelCompilerTool compilerTool = new CelCompilerTool();
 CommandLine cmd = new CommandLine(compilerTool);
 cmd.setTrimQuotes(false);
 cmd.parseArgs(args);

 int exitCode = cmd.execute(args);
 System.exit(exitCode);
 }

 CelCompilerTool() {}
}

69 changes: 69 additions & 0 deletions
compiler/src/test/java/dev/cel/compiler/tools/BUILD.bazel

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@@ -0,0 +1,69 @@
load("@rules_java//java:defs.bzl", "java_library")
load("//:testing.bzl", "junit4_test_suites")
load("//compiler/tools:compile_cel.bzl", "compile_cel")

package(default_applicable_licenses = [
 "//:license",
])

compile_cel(
 name = "compiled_hello_world",
 expression = "'hello world'",
)

compile_cel(
 name = "compiled_comprehension",
 expression = "[1,2,3].map(x, x + 1)",
)

compile_cel(
 name = "compiled_proto_message",
 expression = "cel.expr.conformance.proto2.TestAllTypes{single_int32: 1}",
 proto_srcs = ["@cel_spec//proto/cel/expr/conformance/proto2:test_all_types_proto"],
)

compile_cel(
 name = "compiled_extensions",
 expression = "cel.bind(x, 10, math.greatest([1,x])) < int(' 11 '.trim()) && optional.none().orValue(true) && [].flatten() == []",
 proto_srcs = ["@cel_spec//proto/cel/expr/conformance/proto2:test_all_types_proto"],
)

filegroup(
 name = "compiled_exprs",
 srcs = [
 ":compiled_comprehension",
 ":compiled_extensions",
 ":compiled_hello_world",
 ":compiled_proto_message",
 ],
)

java_library(
 name = "tests",
 testonly = True,
 srcs = glob(["*Test.java"]),
 resources = [":compiled_exprs"],
 deps = [
 "//:java_truth",
 "//common:cel_ast",
 "//common:options",
 "//common:proto_ast",
 "//extensions",
 "//extensions:optional_library",
 "//runtime",
 "@cel_spec//proto/cel/expr:checked_java_proto",
 "@cel_spec//proto/cel/expr/conformance/proto2:test_all_types_java_proto",
 "@maven//:com_google_guava_guava",
 "@maven//:com_google_protobuf_protobuf_java",
 "@maven//:junit_junit",
 ],
)

junit4_test_suites(
 name = "test_suites",
 sizes = [
 "small",
 ],
 src_dir = "src/test/java",
 deps = [":tests"],
)
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

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Add CelCompilerTool java binary and compile_cel bzl library#594

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 Merged

copybara-service
merged 1 commit into

from

Feb 13, 2025
 Merged


Add CelCompilerTool java binary and compile_cel bzl library
#594
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1 change: 1 addition & 0 deletions
WORKSPACE

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -140,6 +140,7 @@ maven_install(
 "com.google.truth.extensions:truth-java8-extension:1.4.4",
 "com.google.truth.extensions:truth-proto-extension:1.4.4",
 "com.google.truth:truth:1.4.4",
 "info.picocli:picocli:4.7.6",
 "org.antlr:antlr4-runtime:" + ANTLR4_VERSION,
 "org.jspecify:jspecify:1.0.0",
 "org.threeten:threeten-extra:1.8.0",
Expand Down

2 changes: 2 additions & 0 deletions
common/BUILD.bazel

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Original file line numberDiff line numberDiff line change
Expand Up@@ -39,6 +39,7 @@ java_library(

java_library(
 name = "error_codes",
 # used_by_android
 exports = ["//common/src/main/java/dev/cel/common:error_codes"],
)

Expand DownExpand Up@@ -86,6 +87,7 @@ java_library(

java_library(
 name = "cel_exception",
 # used_by_android
 visibility = ["//visibility:public"],
 exports = ["//common/src/main/java/dev/cel/common:cel_exception"],
)

1 change: 1 addition & 0 deletions
common/annotations/BUILD.bazel

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Original file line numberDiff line numberDiff line change
Expand Up@@ -7,5 +7,6 @@ package(

java_library(
 name = "annotations",
 # used_by_android
 exports = ["//common/src/main/java/dev/cel/common/annotations"],
)

2 changes: 2 additions & 0 deletions
common/internal/BUILD.bazel

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -23,6 +23,7 @@ cel_android_library(

java_library(
 name = "converter",
 # used_by_android
 exports = ["//common/src/main/java/dev/cel/common/internal:converter"],
)

Expand DownExpand Up@@ -78,6 +79,7 @@ java_library(

java_library(
 name = "safe_string_formatter",
 # used_by_android
 exports = ["//common/src/main/java/dev/cel/common/internal:safe_string_formatter"],
)

Expand Down

2 changes: 2 additions & 0 deletions
common/src/main/java/dev/cel/common/BUILD.bazel

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Original file line numberDiff line numberDiff line change
Expand Up@@ -77,6 +77,7 @@ java_library(
java_library(
 name = "cel_exception",
 srcs = ["CelException.java"],
 # used_by_android
 tags = [
 ],
 visibility = ["//visibility:public"],
Expand DownExpand Up@@ -135,6 +136,7 @@ java_library(
java_library(
 name = "error_codes",
 srcs = ["CelErrorCode.java"],
 # used_by_android
 tags = [
 ],
)
Expand Down

1 change: 1 addition & 0 deletions
common/src/main/java/dev/cel/common/annotations/BUILD.bazel

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Original file line numberDiff line numberDiff line change
Expand Up@@ -17,6 +17,7 @@ ANNOTATION_SOURCES = [
java_library(
 name = "annotations",
 srcs = ANNOTATION_SOURCES,
 # used_by_android
 tags = [
 ],
)

2 changes: 2 additions & 0 deletions
common/src/main/java/dev/cel/common/internal/BUILD.bazel

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Original file line numberDiff line numberDiff line change
Expand Up@@ -100,6 +100,7 @@ java_library(
 "BidiConverter.java",
 "Converter.java",
 ],
 # used_by_android
 tags = [
 ],
 deps = [
Expand DownExpand Up@@ -264,6 +265,7 @@ java_library(
java_library(
 name = "safe_string_formatter",
 srcs = ["SafeStringFormatter.java"],
 # used_by_android
 tags = [
 ],
 deps = [
Expand Down

32 changes: 32 additions & 0 deletions
compiler/src/main/java/dev/cel/compiler/tools/BUILD.bazel

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@@ -0,0 +1,32 @@
load("@rules_java//java:defs.bzl", "java_binary")

package(
 default_applicable_licenses = [
 "//:license",
 ],
 default_visibility = [
 "//compiler/tools:__pkg__",
 ],
)

java_binary(
 name = "cel_compiler_tool",
 srcs = ["CelCompilerTool.java"],
 main_class = "dev.cel.compiler.tools.CelCompilerTool",
 neverlink = 1,
 deps = [
 "//common",
 "//common:compiler_common",
 "//common:options",
 "//common:proto_ast",
 "//compiler",
 "//compiler:compiler_builder",
 "//extensions",
 "//extensions:optional_library",
 "//parser:macro",
 "@cel_spec//proto/cel/expr:checked_java_proto",
 "@maven//:com_google_guava_guava",
 "@maven//:com_google_protobuf_protobuf_java",
 "@maven//:info_picocli_picocli",
 ],
)

138 changes: 138 additions & 0 deletions
compiler/src/main/java/dev/cel/compiler/tools/CelCompilerTool.java

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@@ -0,0 +1,138 @@
// Copyright 2025 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package dev.cel.compiler.tools;

import dev.cel.expr.CheckedExpr;
import com.google.common.collect.ImmutableSet;
import com.google.common.io.Files;
import com.google.protobuf.DescriptorProtos.FileDescriptorSet;
import com.google.protobuf.Descriptors.FileDescriptor;
import com.google.protobuf.ExtensionRegistry;
import dev.cel.common.CelAbstractSyntaxTree;
import dev.cel.common.CelDescriptorUtil;
import dev.cel.common.CelOptions;
import dev.cel.common.CelProtoAbstractSyntaxTree;
import dev.cel.common.CelValidationException;
import dev.cel.compiler.CelCompiler;
import dev.cel.compiler.CelCompilerBuilder;
import dev.cel.compiler.CelCompilerFactory;
import dev.cel.extensions.CelExtensions;
import dev.cel.extensions.CelOptionalLibrary;
import dev.cel.parser.CelStandardMacro;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.concurrent.Callable;
import picocli.CommandLine;
import picocli.CommandLine.Option;

/**
 * CelCompilerTool is a binary that takes a CEL expression in string, compiles it into a
 * dev.cel.expr.CheckedExpr protobuf message, then writes the content to a .binary pb file.
 */
final class CelCompilerTool implements Callable<Integer> {

 @Option(
 names = {"--cel_expression"},
 description = "CEL expression")
 private String celExpression = "";

 @Option(
 names = {"--transitive_descriptor_set"},
 description = "Path to the transitive set of descriptors")
 private String transitiveDescriptorSetPath = "";

 @Option(
 names = {"--output"},
 description = "Output path for the compiled binarypb")
 private String output = "";

 private static final CelOptions CEL_OPTIONS = CelOptions.DEFAULT;

 private static FileDescriptorSet load(String descriptorSetPath) {
 try {
 byte[] descriptorBytes = Files.toByteArray(new File(descriptorSetPath));
 return FileDescriptorSet.parseFrom(descriptorBytes, ExtensionRegistry.getEmptyRegistry());
 } catch (IOException e) {
 throw new IllegalArgumentException(
 "Failed to load FileDescriptorSet from path: " + descriptorSetPath, e);
 }
 }

 private static CelAbstractSyntaxTree compile(
 String expression, String transitiveDescriptorSetPath) throws CelValidationException {
 CelCompilerBuilder compilerBuilder =
 CelCompilerFactory.standardCelCompilerBuilder()
 .setOptions(CEL_OPTIONS)
 .setStandardMacros(CelStandardMacro.STANDARD_MACROS)
 .addLibraries(
 CelExtensions.bindings(),
 CelExtensions.encoders(),
 CelExtensions.math(CEL_OPTIONS),
 CelExtensions.lists(),
 CelExtensions.protos(),
 CelExtensions.strings(),
 CelOptionalLibrary.INSTANCE);
 if (!transitiveDescriptorSetPath.isEmpty()) {
 ImmutableSet<FileDescriptor> transitiveFileDescriptors =
 CelDescriptorUtil.getFileDescriptorsFromFileDescriptorSet(
 load(transitiveDescriptorSetPath));
 compilerBuilder.addFileTypes(transitiveFileDescriptors);
 }

 CelCompiler celCompiler = compilerBuilder.build();

 return celCompiler.compile(expression).getAst();
 }

 private static void writeCheckedExpr(CelAbstractSyntaxTree ast, String filePath)
 throws IOException {
 CheckedExpr checkedExpr = CelProtoAbstractSyntaxTree.fromCelAst(ast).toCheckedExpr();
 Path path = Paths.get(filePath);
 try (FileOutputStream output = new FileOutputStream(path.toFile())) {
 checkedExpr.writeTo(output);
 }
 }

 @Override
 public Integer call() {
 try {
 CelAbstractSyntaxTree ast = compile(celExpression, transitiveDescriptorSetPath);
 writeCheckedExpr(ast, output);
 } catch (Exception e) {
 String errorMessage =
 String.format(
 "Expression [%s] failed to compile. Reason: %s", celExpression, e.getMessage());
 System.err.print(errorMessage);
 return -1;
 }

 return 0;
 }

 public static void main(String[] args) {
 CelCompilerTool compilerTool = new CelCompilerTool();
 CommandLine cmd = new CommandLine(compilerTool);
 cmd.setTrimQuotes(false);
 cmd.parseArgs(args);

 int exitCode = cmd.execute(args);
 System.exit(exitCode);
 }

 CelCompilerTool() {}
}

69 changes: 69 additions & 0 deletions
compiler/src/test/java/dev/cel/compiler/tools/BUILD.bazel

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@@ -0,0 +1,69 @@
load("@rules_java//java:defs.bzl", "java_library")
load("//:testing.bzl", "junit4_test_suites")
load("//compiler/tools:compile_cel.bzl", "compile_cel")

package(default_applicable_licenses = [
 "//:license",
])

compile_cel(
 name = "compiled_hello_world",
 expression = "'hello world'",
)

compile_cel(
 name = "compiled_comprehension",
 expression = "[1,2,3].map(x, x + 1)",
)

compile_cel(
 name = "compiled_proto_message",
 expression = "cel.expr.conformance.proto2.TestAllTypes{single_int32: 1}",
 proto_srcs = ["@cel_spec//proto/cel/expr/conformance/proto2:test_all_types_proto"],
)

compile_cel(
 name = "compiled_extensions",
 expression = "cel.bind(x, 10, math.greatest([1,x])) < int(' 11 '.trim()) && optional.none().orValue(true) && [].flatten() == []",
 proto_srcs = ["@cel_spec//proto/cel/expr/conformance/proto2:test_all_types_proto"],
)

filegroup(
 name = "compiled_exprs",
 srcs = [
 ":compiled_comprehension",
 ":compiled_extensions",
 ":compiled_hello_world",
 ":compiled_proto_message",
 ],
)

java_library(
 name = "tests",
 testonly = True,
 srcs = glob(["*Test.java"]),
 resources = [":compiled_exprs"],
 deps = [
 "//:java_truth",
 "//common:cel_ast",
 "//common:options",
 "//common:proto_ast",
 "//extensions",
 "//extensions:optional_library",
 "//runtime",
 "@cel_spec//proto/cel/expr:checked_java_proto",
 "@cel_spec//proto/cel/expr/conformance/proto2:test_all_types_java_proto",
 "@maven//:com_google_guava_guava",
 "@maven//:com_google_protobuf_protobuf_java",
 "@maven//:junit_junit",
 ],
)

junit4_test_suites(
 name = "test_suites",
 sizes = [
 "small",
 ],
 src_dir = "src/test/java",
 deps = [":tests"],
)
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
Add CelCompilerTool java binary and compile_cel bzl library#594

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

 Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and
privacy statement. We’ll occasionally send you account related emails.

Already on GitHub?
Sign in
to your account

 Merged

copybara-service
merged 1 commit into

from

Feb 13, 2025
 Merged


Add CelCompilerTool java binary and compile_cel bzl library
#594
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1 change: 1 addition & 0 deletions
WORKSPACE

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -140,6 +140,7 @@ maven_install(
 "com.google.truth.extensions:truth-java8-extension:1.4.4",
 "com.google.truth.extensions:truth-proto-extension:1.4.4",
 "com.google.truth:truth:1.4.4",
 "info.picocli:picocli:4.7.6",
 "org.antlr:antlr4-runtime:" + ANTLR4_VERSION,
 "org.jspecify:jspecify:1.0.0",
 "org.threeten:threeten-extra:1.8.0",
Expand Down

2 changes: 2 additions & 0 deletions
common/BUILD.bazel

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -39,6 +39,7 @@ java_library(

java_library(
 name = "error_codes",
 # used_by_android
 exports = ["//common/src/main/java/dev/cel/common:error_codes"],
)

Expand DownExpand Up@@ -86,6 +87,7 @@ java_library(

java_library(
 name = "cel_exception",
 # used_by_android
 visibility = ["//visibility:public"],
 exports = ["//common/src/main/java/dev/cel/common:cel_exception"],
)

1 change: 1 addition & 0 deletions
common/annotations/BUILD.bazel

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -7,5 +7,6 @@ package(

java_library(
 name = "annotations",
 # used_by_android
 exports = ["//common/src/main/java/dev/cel/common/annotations"],
)

2 changes: 2 additions & 0 deletions
common/internal/BUILD.bazel

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -23,6 +23,7 @@ cel_android_library(

java_library(
 name = "converter",
 # used_by_android
 exports = ["//common/src/main/java/dev/cel/common/internal:converter"],
)

Expand DownExpand Up@@ -78,6 +79,7 @@ java_library(

java_library(
 name = "safe_string_formatter",
 # used_by_android
 exports = ["//common/src/main/java/dev/cel/common/internal:safe_string_formatter"],
)

Expand Down

2 changes: 2 additions & 0 deletions
common/src/main/java/dev/cel/common/BUILD.bazel

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -77,6 +77,7 @@ java_library(
java_library(
 name = "cel_exception",
 srcs = ["CelException.java"],
 # used_by_android
 tags = [
 ],
 visibility = ["//visibility:public"],
Expand DownExpand Up@@ -135,6 +136,7 @@ java_library(
java_library(
 name = "error_codes",
 srcs = ["CelErrorCode.java"],
 # used_by_android
 tags = [
 ],
)
Expand Down

1 change: 1 addition & 0 deletions
common/src/main/java/dev/cel/common/annotations/BUILD.bazel

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Original file line numberDiff line numberDiff line change
Expand Up@@ -17,6 +17,7 @@ ANNOTATION_SOURCES = [
java_library(
 name = "annotations",
 srcs = ANNOTATION_SOURCES,
 # used_by_android
 tags = [
 ],
)

2 changes: 2 additions & 0 deletions
common/src/main/java/dev/cel/common/internal/BUILD.bazel

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -100,6 +100,7 @@ java_library(
 "BidiConverter.java",
 "Converter.java",
 ],
 # used_by_android
 tags = [
 ],
 deps = [
Expand DownExpand Up@@ -264,6 +265,7 @@ java_library(
java_library(
 name = "safe_string_formatter",
 srcs = ["SafeStringFormatter.java"],
 # used_by_android
 tags = [
 ],
 deps = [
Expand Down

32 changes: 32 additions & 0 deletions
compiler/src/main/java/dev/cel/compiler/tools/BUILD.bazel

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,32 @@
load("@rules_java//java:defs.bzl", "java_binary")

package(
 default_applicable_licenses = [
 "//:license",
 ],
 default_visibility = [
 "//compiler/tools:__pkg__",
 ],
)

java_binary(
 name = "cel_compiler_tool",
 srcs = ["CelCompilerTool.java"],
 main_class = "dev.cel.compiler.tools.CelCompilerTool",
 neverlink = 1,
 deps = [
 "//common",
 "//common:compiler_common",
 "//common:options",
 "//common:proto_ast",
 "//compiler",
 "//compiler:compiler_builder",
 "//extensions",
 "//extensions:optional_library",
 "//parser:macro",
 "@cel_spec//proto/cel/expr:checked_java_proto",
 "@maven//:com_google_guava_guava",
 "@maven//:com_google_protobuf_protobuf_java",
 "@maven//:info_picocli_picocli",
 ],
)

138 changes: 138 additions & 0 deletions
compiler/src/main/java/dev/cel/compiler/tools/CelCompilerTool.java

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@@ -0,0 +1,138 @@
// Copyright 2025 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package dev.cel.compiler.tools;

import dev.cel.expr.CheckedExpr;
import com.google.common.collect.ImmutableSet;
import com.google.common.io.Files;
import com.google.protobuf.DescriptorProtos.FileDescriptorSet;
import com.google.protobuf.Descriptors.FileDescriptor;
import com.google.protobuf.ExtensionRegistry;
import dev.cel.common.CelAbstractSyntaxTree;
import dev.cel.common.CelDescriptorUtil;
import dev.cel.common.CelOptions;
import dev.cel.common.CelProtoAbstractSyntaxTree;
import dev.cel.common.CelValidationException;
import dev.cel.compiler.CelCompiler;
import dev.cel.compiler.CelCompilerBuilder;
import dev.cel.compiler.CelCompilerFactory;
import dev.cel.extensions.CelExtensions;
import dev.cel.extensions.CelOptionalLibrary;
import dev.cel.parser.CelStandardMacro;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.concurrent.Callable;
import picocli.CommandLine;
import picocli.CommandLine.Option;

/**
 * CelCompilerTool is a binary that takes a CEL expression in string, compiles it into a
 * dev.cel.expr.CheckedExpr protobuf message, then writes the content to a .binary pb file.
 */
final class CelCompilerTool implements Callable<Integer> {

 @Option(
 names = {"--cel_expression"},
 description = "CEL expression")
 private String celExpression = "";

 @Option(
 names = {"--transitive_descriptor_set"},
 description = "Path to the transitive set of descriptors")
 private String transitiveDescriptorSetPath = "";

 @Option(
 names = {"--output"},
 description = "Output path for the compiled binarypb")
 private String output = "";

 private static final CelOptions CEL_OPTIONS = CelOptions.DEFAULT;

 private static FileDescriptorSet load(String descriptorSetPath) {
 try {
 byte[] descriptorBytes = Files.toByteArray(new File(descriptorSetPath));
 return FileDescriptorSet.parseFrom(descriptorBytes, ExtensionRegistry.getEmptyRegistry());
 } catch (IOException e) {
 throw new IllegalArgumentException(
 "Failed to load FileDescriptorSet from path: " + descriptorSetPath, e);
 }
 }

 private static CelAbstractSyntaxTree compile(
 String expression, String transitiveDescriptorSetPath) throws CelValidationException {
 CelCompilerBuilder compilerBuilder =
 CelCompilerFactory.standardCelCompilerBuilder()
 .setOptions(CEL_OPTIONS)
 .setStandardMacros(CelStandardMacro.STANDARD_MACROS)
 .addLibraries(
 CelExtensions.bindings(),
 CelExtensions.encoders(),
 CelExtensions.math(CEL_OPTIONS),
 CelExtensions.lists(),
 CelExtensions.protos(),
 CelExtensions.strings(),
 CelOptionalLibrary.INSTANCE);
 if (!transitiveDescriptorSetPath.isEmpty()) {
 ImmutableSet<FileDescriptor> transitiveFileDescriptors =
 CelDescriptorUtil.getFileDescriptorsFromFileDescriptorSet(
 load(transitiveDescriptorSetPath));
 compilerBuilder.addFileTypes(transitiveFileDescriptors);
 }

 CelCompiler celCompiler = compilerBuilder.build();

 return celCompiler.compile(expression).getAst();
 }

 private static void writeCheckedExpr(CelAbstractSyntaxTree ast, String filePath)
 throws IOException {
 CheckedExpr checkedExpr = CelProtoAbstractSyntaxTree.fromCelAst(ast).toCheckedExpr();
 Path path = Paths.get(filePath);
 try (FileOutputStream output = new FileOutputStream(path.toFile())) {
 checkedExpr.writeTo(output);
 }
 }

 @Override
 public Integer call() {
 try {
 CelAbstractSyntaxTree ast = compile(celExpression, transitiveDescriptorSetPath);
 writeCheckedExpr(ast, output);
 } catch (Exception e) {
 String errorMessage =
 String.format(
 "Expression [%s] failed to compile. Reason: %s", celExpression, e.getMessage());
 System.err.print(errorMessage);
 return -1;
 }

 return 0;
 }

 public static void main(String[] args) {
 CelCompilerTool compilerTool = new CelCompilerTool();
 CommandLine cmd = new CommandLine(compilerTool);
 cmd.setTrimQuotes(false);
 cmd.parseArgs(args);

 int exitCode = cmd.execute(args);
 System.exit(exitCode);
 }

 CelCompilerTool() {}
}

69 changes: 69 additions & 0 deletions
compiler/src/test/java/dev/cel/compiler/tools/BUILD.bazel

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@@ -0,0 +1,69 @@
load("@rules_java//java:defs.bzl", "java_library")
load("//:testing.bzl", "junit4_test_suites")
load("//compiler/tools:compile_cel.bzl", "compile_cel")

package(default_applicable_licenses = [
 "//:license",
])

compile_cel(
 name = "compiled_hello_world",
 expression = "'hello world'",
)

compile_cel(
 name = "compiled_comprehension",
 expression = "[1,2,3].map(x, x + 1)",
)

compile_cel(
 name = "compiled_proto_message",
 expression = "cel.expr.conformance.proto2.TestAllTypes{single_int32: 1}",
 proto_srcs = ["@cel_spec//proto/cel/expr/conformance/proto2:test_all_types_proto"],
)

compile_cel(
 name = "compiled_extensions",
 expression = "cel.bind(x, 10, math.greatest([1,x])) < int(' 11 '.trim()) && optional.none().orValue(true) && [].flatten() == []",
 proto_srcs = ["@cel_spec//proto/cel/expr/conformance/proto2:test_all_types_proto"],
)

filegroup(
 name = "compiled_exprs",
 srcs = [
 ":compiled_comprehension",
 ":compiled_extensions",
 ":compiled_hello_world",
 ":compiled_proto_message",
 ],
)

java_library(
 name = "tests",
 testonly = True,
 srcs = glob(["*Test.java"]),
 resources = [":compiled_exprs"],
 deps = [
 "//:java_truth",
 "//common:cel_ast",
 "//common:options",
 "//common:proto_ast",
 "//extensions",
 "//extensions:optional_library",
 "//runtime",
 "@cel_spec//proto/cel/expr:checked_java_proto",
 "@cel_spec//proto/cel/expr/conformance/proto2:test_all_types_java_proto",
 "@maven//:com_google_guava_guava",
 "@maven//:com_google_protobuf_protobuf_java",
 "@maven//:junit_junit",
 ],
)

junit4_test_suites(
 name = "test_suites",
 sizes = [
 "small",
 ],
 src_dir = "src/test/java",
 deps = [":tests"],
)
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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Add CelCompilerTool java binary and compile_cel bzl library#594

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 Merged

copybara-service
merged 1 commit into

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Feb 13, 2025
 Merged


Add CelCompilerTool java binary and compile_cel bzl library
#594
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1 change: 1 addition & 0 deletions
WORKSPACE

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -140,6 +140,7 @@ maven_install(
 "com.google.truth.extensions:truth-java8-extension:1.4.4",
 "com.google.truth.extensions:truth-proto-extension:1.4.4",
 "com.google.truth:truth:1.4.4",
 "info.picocli:picocli:4.7.6",
 "org.antlr:antlr4-runtime:" + ANTLR4_VERSION,
 "org.jspecify:jspecify:1.0.0",
 "org.threeten:threeten-extra:1.8.0",
Expand Down

2 changes: 2 additions & 0 deletions
common/BUILD.bazel

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Original file line numberDiff line numberDiff line change
Expand Up@@ -39,6 +39,7 @@ java_library(

java_library(
 name = "error_codes",
 # used_by_android
 exports = ["//common/src/main/java/dev/cel/common:error_codes"],
)

Expand DownExpand Up@@ -86,6 +87,7 @@ java_library(

java_library(
 name = "cel_exception",
 # used_by_android
 visibility = ["//visibility:public"],
 exports = ["//common/src/main/java/dev/cel/common:cel_exception"],
)

1 change: 1 addition & 0 deletions
common/annotations/BUILD.bazel

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -7,5 +7,6 @@ package(

java_library(
 name = "annotations",
 # used_by_android
 exports = ["//common/src/main/java/dev/cel/common/annotations"],
)

2 changes: 2 additions & 0 deletions
common/internal/BUILD.bazel

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -23,6 +23,7 @@ cel_android_library(

java_library(
 name = "converter",
 # used_by_android
 exports = ["//common/src/main/java/dev/cel/common/internal:converter"],
)

Expand DownExpand Up@@ -78,6 +79,7 @@ java_library(

java_library(
 name = "safe_string_formatter",
 # used_by_android
 exports = ["//common/src/main/java/dev/cel/common/internal:safe_string_formatter"],
)

Expand Down

2 changes: 2 additions & 0 deletions
common/src/main/java/dev/cel/common/BUILD.bazel

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -77,6 +77,7 @@ java_library(
java_library(
 name = "cel_exception",
 srcs = ["CelException.java"],
 # used_by_android
 tags = [
 ],
 visibility = ["//visibility:public"],
Expand DownExpand Up@@ -135,6 +136,7 @@ java_library(
java_library(
 name = "error_codes",
 srcs = ["CelErrorCode.java"],
 # used_by_android
 tags = [
 ],
)
Expand Down

1 change: 1 addition & 0 deletions
common/src/main/java/dev/cel/common/annotations/BUILD.bazel

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Original file line numberDiff line numberDiff line change
Expand Up@@ -17,6 +17,7 @@ ANNOTATION_SOURCES = [
java_library(
 name = "annotations",
 srcs = ANNOTATION_SOURCES,
 # used_by_android
 tags = [
 ],
)

2 changes: 2 additions & 0 deletions
common/src/main/java/dev/cel/common/internal/BUILD.bazel

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -100,6 +100,7 @@ java_library(
 "BidiConverter.java",
 "Converter.java",
 ],
 # used_by_android
 tags = [
 ],
 deps = [
Expand DownExpand Up@@ -264,6 +265,7 @@ java_library(
java_library(
 name = "safe_string_formatter",
 srcs = ["SafeStringFormatter.java"],
 # used_by_android
 tags = [
 ],
 deps = [
Expand Down

32 changes: 32 additions & 0 deletions
compiler/src/main/java/dev/cel/compiler/tools/BUILD.bazel

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@@ -0,0 +1,32 @@
load("@rules_java//java:defs.bzl", "java_binary")

package(
 default_applicable_licenses = [
 "//:license",
 ],
 default_visibility = [
 "//compiler/tools:__pkg__",
 ],
)

java_binary(
 name = "cel_compiler_tool",
 srcs = ["CelCompilerTool.java"],
 main_class = "dev.cel.compiler.tools.CelCompilerTool",
 neverlink = 1,
 deps = [
 "//common",
 "//common:compiler_common",
 "//common:options",
 "//common:proto_ast",
 "//compiler",
 "//compiler:compiler_builder",
 "//extensions",
 "//extensions:optional_library",
 "//parser:macro",
 "@cel_spec//proto/cel/expr:checked_java_proto",
 "@maven//:com_google_guava_guava",
 "@maven//:com_google_protobuf_protobuf_java",
 "@maven//:info_picocli_picocli",
 ],
)

138 changes: 138 additions & 0 deletions
compiler/src/main/java/dev/cel/compiler/tools/CelCompilerTool.java

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@@ -0,0 +1,138 @@
// Copyright 2025 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package dev.cel.compiler.tools;

import dev.cel.expr.CheckedExpr;
import com.google.common.collect.ImmutableSet;
import com.google.common.io.Files;
import com.google.protobuf.DescriptorProtos.FileDescriptorSet;
import com.google.protobuf.Descriptors.FileDescriptor;
import com.google.protobuf.ExtensionRegistry;
import dev.cel.common.CelAbstractSyntaxTree;
import dev.cel.common.CelDescriptorUtil;
import dev.cel.common.CelOptions;
import dev.cel.common.CelProtoAbstractSyntaxTree;
import dev.cel.common.CelValidationException;
import dev.cel.compiler.CelCompiler;
import dev.cel.compiler.CelCompilerBuilder;
import dev.cel.compiler.CelCompilerFactory;
import dev.cel.extensions.CelExtensions;
import dev.cel.extensions.CelOptionalLibrary;
import dev.cel.parser.CelStandardMacro;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.concurrent.Callable;
import picocli.CommandLine;
import picocli.CommandLine.Option;

/**
 * CelCompilerTool is a binary that takes a CEL expression in string, compiles it into a
 * dev.cel.expr.CheckedExpr protobuf message, then writes the content to a .binary pb file.
 */
final class CelCompilerTool implements Callable<Integer> {

 @Option(
 names = {"--cel_expression"},
 description = "CEL expression")
 private String celExpression = "";

 @Option(
 names = {"--transitive_descriptor_set"},
 description = "Path to the transitive set of descriptors")
 private String transitiveDescriptorSetPath = "";

 @Option(
 names = {"--output"},
 description = "Output path for the compiled binarypb")
 private String output = "";

 private static final CelOptions CEL_OPTIONS = CelOptions.DEFAULT;

 private static FileDescriptorSet load(String descriptorSetPath) {
 try {
 byte[] descriptorBytes = Files.toByteArray(new File(descriptorSetPath));
 return FileDescriptorSet.parseFrom(descriptorBytes, ExtensionRegistry.getEmptyRegistry());
 } catch (IOException e) {
 throw new IllegalArgumentException(
 "Failed to load FileDescriptorSet from path: " + descriptorSetPath, e);
 }
 }

 private static CelAbstractSyntaxTree compile(
 String expression, String transitiveDescriptorSetPath) throws CelValidationException {
 CelCompilerBuilder compilerBuilder =
 CelCompilerFactory.standardCelCompilerBuilder()
 .setOptions(CEL_OPTIONS)
 .setStandardMacros(CelStandardMacro.STANDARD_MACROS)
 .addLibraries(
 CelExtensions.bindings(),
 CelExtensions.encoders(),
 CelExtensions.math(CEL_OPTIONS),
 CelExtensions.lists(),
 CelExtensions.protos(),
 CelExtensions.strings(),
 CelOptionalLibrary.INSTANCE);
 if (!transitiveDescriptorSetPath.isEmpty()) {
 ImmutableSet<FileDescriptor> transitiveFileDescriptors =
 CelDescriptorUtil.getFileDescriptorsFromFileDescriptorSet(
 load(transitiveDescriptorSetPath));
 compilerBuilder.addFileTypes(transitiveFileDescriptors);
 }

 CelCompiler celCompiler = compilerBuilder.build();

 return celCompiler.compile(expression).getAst();
 }

 private static void writeCheckedExpr(CelAbstractSyntaxTree ast, String filePath)
 throws IOException {
 CheckedExpr checkedExpr = CelProtoAbstractSyntaxTree.fromCelAst(ast).toCheckedExpr();
 Path path = Paths.get(filePath);
 try (FileOutputStream output = new FileOutputStream(path.toFile())) {
 checkedExpr.writeTo(output);
 }
 }

 @Override
 public Integer call() {
 try {
 CelAbstractSyntaxTree ast = compile(celExpression, transitiveDescriptorSetPath);
 writeCheckedExpr(ast, output);
 } catch (Exception e) {
 String errorMessage =
 String.format(
 "Expression [%s] failed to compile. Reason: %s", celExpression, e.getMessage());
 System.err.print(errorMessage);
 return -1;
 }

 return 0;
 }

 public static void main(String[] args) {
 CelCompilerTool compilerTool = new CelCompilerTool();
 CommandLine cmd = new CommandLine(compilerTool);
 cmd.setTrimQuotes(false);
 cmd.parseArgs(args);

 int exitCode = cmd.execute(args);
 System.exit(exitCode);
 }

 CelCompilerTool() {}
}

69 changes: 69 additions & 0 deletions
compiler/src/test/java/dev/cel/compiler/tools/BUILD.bazel

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,69 @@
load("@rules_java//java:defs.bzl", "java_library")
load("//:testing.bzl", "junit4_test_suites")
load("//compiler/tools:compile_cel.bzl", "compile_cel")

package(default_applicable_licenses = [
 "//:license",
])

compile_cel(
 name = "compiled_hello_world",
 expression = "'hello world'",
)

compile_cel(
 name = "compiled_comprehension",
 expression = "[1,2,3].map(x, x + 1)",
)

compile_cel(
 name = "compiled_proto_message",
 expression = "cel.expr.conformance.proto2.TestAllTypes{single_int32: 1}",
 proto_srcs = ["@cel_spec//proto/cel/expr/conformance/proto2:test_all_types_proto"],
)

compile_cel(
 name = "compiled_extensions",
 expression = "cel.bind(x, 10, math.greatest([1,x])) < int(' 11 '.trim()) && optional.none().orValue(true) && [].flatten() == []",
 proto_srcs = ["@cel_spec//proto/cel/expr/conformance/proto2:test_all_types_proto"],
)

filegroup(
 name = "compiled_exprs",
 srcs = [
 ":compiled_comprehension",
 ":compiled_extensions",
 ":compiled_hello_world",
 ":compiled_proto_message",
 ],
)

java_library(
 name = "tests",
 testonly = True,
 srcs = glob(["*Test.java"]),
 resources = [":compiled_exprs"],
 deps = [
 "//:java_truth",
 "//common:cel_ast",
 "//common:options",
 "//common:proto_ast",
 "//extensions",
 "//extensions:optional_library",
 "//runtime",
 "@cel_spec//proto/cel/expr:checked_java_proto",
 "@cel_spec//proto/cel/expr/conformance/proto2:test_all_types_java_proto",
 "@maven//:com_google_guava_guava",
 "@maven//:com_google_protobuf_protobuf_java",
 "@maven//:junit_junit",
 ],
)

junit4_test_suites(
 name = "test_suites",
 sizes = [
 "small",
 ],
 src_dir = "src/test/java",
 deps = [":tests"],
)
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

Skip to content
Add CelCompilerTool java binary and compile_cel bzl library#594

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 Merged

copybara-service
merged 1 commit into

from

Feb 13, 2025
 Merged


Add CelCompilerTool java binary and compile_cel bzl library
#594
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1 change: 1 addition & 0 deletions
WORKSPACE

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Original file line numberDiff line numberDiff line change
Expand Up@@ -140,6 +140,7 @@ maven_install(
 "com.google.truth.extensions:truth-java8-extension:1.4.4",
 "com.google.truth.extensions:truth-proto-extension:1.4.4",
 "com.google.truth:truth:1.4.4",
 "info.picocli:picocli:4.7.6",
 "org.antlr:antlr4-runtime:" + ANTLR4_VERSION,
 "org.jspecify:jspecify:1.0.0",
 "org.threeten:threeten-extra:1.8.0",
Expand Down

2 changes: 2 additions & 0 deletions
common/BUILD.bazel

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -39,6 +39,7 @@ java_library(

java_library(
 name = "error_codes",
 # used_by_android
 exports = ["//common/src/main/java/dev/cel/common:error_codes"],
)

Expand DownExpand Up@@ -86,6 +87,7 @@ java_library(

java_library(
 name = "cel_exception",
 # used_by_android
 visibility = ["//visibility:public"],
 exports = ["//common/src/main/java/dev/cel/common:cel_exception"],
)

1 change: 1 addition & 0 deletions
common/annotations/BUILD.bazel

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -7,5 +7,6 @@ package(

java_library(
 name = "annotations",
 # used_by_android
 exports = ["//common/src/main/java/dev/cel/common/annotations"],
)

2 changes: 2 additions & 0 deletions
common/internal/BUILD.bazel

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -23,6 +23,7 @@ cel_android_library(

java_library(
 name = "converter",
 # used_by_android
 exports = ["//common/src/main/java/dev/cel/common/internal:converter"],
)

Expand DownExpand Up@@ -78,6 +79,7 @@ java_library(

java_library(
 name = "safe_string_formatter",
 # used_by_android
 exports = ["//common/src/main/java/dev/cel/common/internal:safe_string_formatter"],
)

Expand Down

2 changes: 2 additions & 0 deletions
common/src/main/java/dev/cel/common/BUILD.bazel

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -77,6 +77,7 @@ java_library(
java_library(
 name = "cel_exception",
 srcs = ["CelException.java"],
 # used_by_android
 tags = [
 ],
 visibility = ["//visibility:public"],
Expand DownExpand Up@@ -135,6 +136,7 @@ java_library(
java_library(
 name = "error_codes",
 srcs = ["CelErrorCode.java"],
 # used_by_android
 tags = [
 ],
)
Expand Down

1 change: 1 addition & 0 deletions
common/src/main/java/dev/cel/common/annotations/BUILD.bazel

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -17,6 +17,7 @@ ANNOTATION_SOURCES = [
java_library(
 name = "annotations",
 srcs = ANNOTATION_SOURCES,
 # used_by_android
 tags = [
 ],
)

2 changes: 2 additions & 0 deletions
common/src/main/java/dev/cel/common/internal/BUILD.bazel

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -100,6 +100,7 @@ java_library(
 "BidiConverter.java",
 "Converter.java",
 ],
 # used_by_android
 tags = [
 ],
 deps = [
Expand DownExpand Up@@ -264,6 +265,7 @@ java_library(
java_library(
 name = "safe_string_formatter",
 srcs = ["SafeStringFormatter.java"],
 # used_by_android
 tags = [
 ],
 deps = [
Expand Down

32 changes: 32 additions & 0 deletions
compiler/src/main/java/dev/cel/compiler/tools/BUILD.bazel

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,32 @@
load("@rules_java//java:defs.bzl", "java_binary")

package(
 default_applicable_licenses = [
 "//:license",
 ],
 default_visibility = [
 "//compiler/tools:__pkg__",
 ],
)

java_binary(
 name = "cel_compiler_tool",
 srcs = ["CelCompilerTool.java"],
 main_class = "dev.cel.compiler.tools.CelCompilerTool",
 neverlink = 1,
 deps = [
 "//common",
 "//common:compiler_common",
 "//common:options",
 "//common:proto_ast",
 "//compiler",
 "//compiler:compiler_builder",
 "//extensions",
 "//extensions:optional_library",
 "//parser:macro",
 "@cel_spec//proto/cel/expr:checked_java_proto",
 "@maven//:com_google_guava_guava",
 "@maven//:com_google_protobuf_protobuf_java",
 "@maven//:info_picocli_picocli",
 ],
)

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compiler/src/main/java/dev/cel/compiler/tools/CelCompilerTool.java

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// Copyright 2025 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package dev.cel.compiler.tools;

import dev.cel.expr.CheckedExpr;
import com.google.common.collect.ImmutableSet;
import com.google.common.io.Files;
import com.google.protobuf.DescriptorProtos.FileDescriptorSet;
import com.google.protobuf.Descriptors.FileDescriptor;
import com.google.protobuf.ExtensionRegistry;
import dev.cel.common.CelAbstractSyntaxTree;
import dev.cel.common.CelDescriptorUtil;
import dev.cel.common.CelOptions;
import dev.cel.common.CelProtoAbstractSyntaxTree;
import dev.cel.common.CelValidationException;
import dev.cel.compiler.CelCompiler;
import dev.cel.compiler.CelCompilerBuilder;
import dev.cel.compiler.CelCompilerFactory;
import dev.cel.extensions.CelExtensions;
import dev.cel.extensions.CelOptionalLibrary;
import dev.cel.parser.CelStandardMacro;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.concurrent.Callable;
import picocli.CommandLine;
import picocli.CommandLine.Option;

/**
 * CelCompilerTool is a binary that takes a CEL expression in string, compiles it into a
 * dev.cel.expr.CheckedExpr protobuf message, then writes the content to a .binary pb file.
 */
final class CelCompilerTool implements Callable<Integer> {

 @Option(
 names = {"--cel_expression"},
 description = "CEL expression")
 private String celExpression = "";

 @Option(
 names = {"--transitive_descriptor_set"},
 description = "Path to the transitive set of descriptors")
 private String transitiveDescriptorSetPath = "";

 @Option(
 names = {"--output"},
 description = "Output path for the compiled binarypb")
 private String output = "";

 private static final CelOptions CEL_OPTIONS = CelOptions.DEFAULT;

 private static FileDescriptorSet load(String descriptorSetPath) {
 try {
 byte[] descriptorBytes = Files.toByteArray(new File(descriptorSetPath));
 return FileDescriptorSet.parseFrom(descriptorBytes, ExtensionRegistry.getEmptyRegistry());
 } catch (IOException e) {
 throw new IllegalArgumentException(
 "Failed to load FileDescriptorSet from path: " + descriptorSetPath, e);
 }
 }

 private static CelAbstractSyntaxTree compile(
 String expression, String transitiveDescriptorSetPath) throws CelValidationException {
 CelCompilerBuilder compilerBuilder =
 CelCompilerFactory.standardCelCompilerBuilder()
 .setOptions(CEL_OPTIONS)
 .setStandardMacros(CelStandardMacro.STANDARD_MACROS)
 .addLibraries(
 CelExtensions.bindings(),
 CelExtensions.encoders(),
 CelExtensions.math(CEL_OPTIONS),
 CelExtensions.lists(),
 CelExtensions.protos(),
 CelExtensions.strings(),
 CelOptionalLibrary.INSTANCE);
 if (!transitiveDescriptorSetPath.isEmpty()) {
 ImmutableSet<FileDescriptor> transitiveFileDescriptors =
 CelDescriptorUtil.getFileDescriptorsFromFileDescriptorSet(
 load(transitiveDescriptorSetPath));
 compilerBuilder.addFileTypes(transitiveFileDescriptors);
 }

 CelCompiler celCompiler = compilerBuilder.build();

 return celCompiler.compile(expression).getAst();
 }

 private static void writeCheckedExpr(CelAbstractSyntaxTree ast, String filePath)
 throws IOException {
 CheckedExpr checkedExpr = CelProtoAbstractSyntaxTree.fromCelAst(ast).toCheckedExpr();
 Path path = Paths.get(filePath);
 try (FileOutputStream output = new FileOutputStream(path.toFile())) {
 checkedExpr.writeTo(output);
 }
 }

 @Override
 public Integer call() {
 try {
 CelAbstractSyntaxTree ast = compile(celExpression, transitiveDescriptorSetPath);
 writeCheckedExpr(ast, output);
 } catch (Exception e) {
 String errorMessage =
 String.format(
 "Expression [%s] failed to compile. Reason: %s", celExpression, e.getMessage());
 System.err.print(errorMessage);
 return -1;
 }

 return 0;
 }

 public static void main(String[] args) {
 CelCompilerTool compilerTool = new CelCompilerTool();
 CommandLine cmd = new CommandLine(compilerTool);
 cmd.setTrimQuotes(false);
 cmd.parseArgs(args);

 int exitCode = cmd.execute(args);
 System.exit(exitCode);
 }

 CelCompilerTool() {}
}

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compiler/src/test/java/dev/cel/compiler/tools/BUILD.bazel

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load("@rules_java//java:defs.bzl", "java_library")
load("//:testing.bzl", "junit4_test_suites")
load("//compiler/tools:compile_cel.bzl", "compile_cel")

package(default_applicable_licenses = [
 "//:license",
])

compile_cel(
 name = "compiled_hello_world",
 expression = "'hello world'",
)

compile_cel(
 name = "compiled_comprehension",
 expression = "[1,2,3].map(x, x + 1)",
)

compile_cel(
 name = "compiled_proto_message",
 expression = "cel.expr.conformance.proto2.TestAllTypes{single_int32: 1}",
 proto_srcs = ["@cel_spec//proto/cel/expr/conformance/proto2:test_all_types_proto"],
)

compile_cel(
 name = "compiled_extensions",
 expression = "cel.bind(x, 10, math.greatest([1,x])) < int(' 11 '.trim()) && optional.none().orValue(true) && [].flatten() == []",
 proto_srcs = ["@cel_spec//proto/cel/expr/conformance/proto2:test_all_types_proto"],
)

filegroup(
 name = "compiled_exprs",
 srcs = [
 ":compiled_comprehension",
 ":compiled_extensions",
 ":compiled_hello_world",
 ":compiled_proto_message",
 ],
)

java_library(
 name = "tests",
 testonly = True,
 srcs = glob(["*Test.java"]),
 resources = [":compiled_exprs"],
 deps = [
 "//:java_truth",
 "//common:cel_ast",
 "//common:options",
 "//common:proto_ast",
 "//extensions",
 "//extensions:optional_library",
 "//runtime",
 "@cel_spec//proto/cel/expr:checked_java_proto",
 "@cel_spec//proto/cel/expr/conformance/proto2:test_all_types_java_proto",
 "@maven//:com_google_guava_guava",
 "@maven//:com_google_protobuf_protobuf_java",
 "@maven//:junit_junit",
 ],
)

junit4_test_suites(
 name = "test_suites",
 sizes = [
 "small",
 ],
 src_dir = "src/test/java",
 deps = [":tests"],
)
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