com.facebook.buck.skylark.function

Class AbstractSkylarkFunctions

java.lang.Object

com.facebook.buck.skylark.function.AbstractSkylarkFunctions

Direct Known Subclasses:

SkylarkBuildModule, SkylarkPackageModule

public abstract class AbstractSkylarkFunctions
extends Object

Abstract class containing function definitions shared by SkylarkBuildModule and SkylarkPackageModule.

Note: @SkylarkModule does not support having the same name for multiple classes in Runtime.setupSkylarkLibrary(com.google.common.collect.ImmutableMap.Builder<java.lang.String, java.lang.Object>, java.lang.Object) and since we want the shared functions to also be under "native", we must subclass.

Constructor Summary

Constructors

Constructor and Description
AbstractSkylarkFunctions()

Method Summary

Modifier and Type	Method and Description
Object	readConfig(String section, String field, Object defaultValue, com.google.devtools.build.lib.syntax.FuncallExpression ast, com.google.devtools.build.lib.syntax.Environment env) Exposes a read_config for Skylark parser.

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractSkylarkFunctions

public AbstractSkylarkFunctions()

Method Detail

readConfig

public Object readConfig(String section,
                         String field,
                         Object defaultValue,
                         com.google.devtools.build.lib.syntax.FuncallExpression ast,
                         com.google.devtools.build.lib.syntax.Environment env)
                  throws com.google.devtools.build.lib.syntax.EvalException

Exposes a read_config for Skylark parser.

This is a temporary solution to simplify migration from Python DSL to Skylark and allows clients to query values from .buckconfig files and --config command line arguments.

Example, when buck is invoked with --config user.value=my_value an invocation of read_config("user", "value", "default_value") will return my_value.

Throws:

com.google.devtools.build.lib.syntax.EvalException