Disable the 'default' parameter of attr.output and attr.output_list
This is attached to a new Starlark semantics flag, --incompatible_no_output_attr_default
RELNOTES: The 'default' parameter of attr.output and attr.output_list is removed. This is controlled by --incompatible_no_output_attr_default
PiperOrigin-RevId: 215805602
diff --git a/src/main/java/com/google/devtools/build/lib/analysis/skylark/SkylarkAttr.java b/src/main/java/com/google/devtools/build/lib/analysis/skylark/SkylarkAttr.java
index 13cce13..51019a7 100644
--- a/src/main/java/com/google/devtools/build/lib/analysis/skylark/SkylarkAttr.java
+++ b/src/main/java/com/google/devtools/build/lib/analysis/skylark/SkylarkAttr.java
@@ -683,6 +683,13 @@
Object defaultO, String doc, Boolean mandatory, FuncallExpression ast, Environment env)
throws EvalException {
SkylarkUtils.checkLoadingOrWorkspacePhase(env, "attr.output", ast.getLocation());
+
+ if (env.getSemantics().incompatibleNoOutputAttrDefault() && defaultO != Runtime.NONE) {
+ throw new EvalException(ast.getLocation(),
+ "'default' is no longer a supported parameter for attr.output. Use Starlark macros "
+ + "to set the default of output or output_list parameters instead. You can use "
+ + "--incompatible_no_output_attr_default=false to temporarily disable this check.");
+ }
return createNonconfigurableAttrDescriptor(
"output",
EvalUtils.<String, Object>optionMap(env, DEFAULT_ARG, defaultO, MANDATORY_ARG, mandatory),
@@ -694,7 +701,7 @@
@Override
public Descriptor outputListAttribute(
Boolean allowEmpty,
- SkylarkList defaultList,
+ Object defaultList,
String doc,
Boolean mandatory,
Boolean nonEmpty,
@@ -702,6 +709,14 @@
Environment env)
throws EvalException {
SkylarkUtils.checkLoadingOrWorkspacePhase(env, "attr.output_list", ast.getLocation());
+
+ if (env.getSemantics().incompatibleNoOutputAttrDefault() && defaultList != Runtime.NONE) {
+ throw new EvalException(ast.getLocation(),
+ "'default' is no longer a supported parameter for attr.output_list. Use Starlark macros "
+ + "to set the default of output or output_list parameters instead. You can use "
+ + "--incompatible_no_output_attr_default=false to temporarily disable this check.");
+ }
+
return createAttrDescriptor(
"output_list",
EvalUtils.<String, Object>optionMap(
diff --git a/src/main/java/com/google/devtools/build/lib/packages/SkylarkSemanticsOptions.java b/src/main/java/com/google/devtools/build/lib/packages/SkylarkSemanticsOptions.java
index e253319..9c19e2b 100644
--- a/src/main/java/com/google/devtools/build/lib/packages/SkylarkSemanticsOptions.java
+++ b/src/main/java/com/google/devtools/build/lib/packages/SkylarkSemanticsOptions.java
@@ -326,6 +326,19 @@
public boolean incompatibleNewActionsApi;
@Option(
+ name = "incompatible_no_output_attr_default",
+ defaultValue = "false",
+ documentationCategory = OptionDocumentationCategory.SKYLARK_SEMANTICS,
+ effectTags = {OptionEffectTag.BUILD_FILE_SEMANTICS},
+ metadataTags = {
+ OptionMetadataTag.INCOMPATIBLE_CHANGE,
+ OptionMetadataTag.TRIGGERED_BY_ALL_INCOMPATIBLE_CHANGES
+ },
+ help = "If set to true, disables the `default` parameter of the `attr.output` and "
+ + "`attr.output_list` attribute definition functions.")
+ public boolean incompatibleNoOutputAttrDefault;
+
+ @Option(
name = "incompatible_no_support_tools_in_action_inputs",
defaultValue = "false",
documentationCategory = OptionDocumentationCategory.SKYLARK_SEMANTICS,
@@ -501,6 +514,7 @@
.incompatibleExpandDirectories(incompatibleExpandDirectories)
.incompatibleGenerateJavaCommonSourceJar(incompatibleGenerateJavaCommonSourceJar)
.incompatibleNewActionsApi(incompatibleNewActionsApi)
+ .incompatibleNoOutputAttrDefault(incompatibleNoOutputAttrDefault)
.incompatibleNoSupportToolsInActionInputs(incompatibleNoSupportToolsInActionInputs)
.incompatibleNoTargetOutputGroup(incompatibleNoTargetOutputGroup)
.incompatibleNoTransitiveLoads(incompatibleNoTransitiveLoads)
diff --git a/src/main/java/com/google/devtools/build/lib/skylarkbuildapi/SkylarkAttrApi.java b/src/main/java/com/google/devtools/build/lib/skylarkbuildapi/SkylarkAttrApi.java
index 96e1f4e..b688d70 100644
--- a/src/main/java/com/google/devtools/build/lib/skylarkbuildapi/SkylarkAttrApi.java
+++ b/src/main/java/com/google/devtools/build/lib/skylarkbuildapi/SkylarkAttrApi.java
@@ -756,7 +756,9 @@
defaultValue = "None",
named = true,
positional = false,
- doc = DEFAULT_DOC),
+ doc = "<b><code>default<code> is deprecated for <code>attr.output</code>. Use "
+ + "Starlark macros to set the default for <code>output<code> and "
+ + "<code>output_list</code> attributes. <p>" + DEFAULT_DOC),
@Param(
name = DOC_ARG,
type = String.class,
@@ -796,10 +798,13 @@
@ParamType(type = SkylarkList.class, generic1 = Label.class),
@ParamType(type = UserDefinedFunction.class)
},
- defaultValue = "[]",
+ noneable = true,
+ defaultValue = "None",
named = true,
positional = false,
- doc = DEFAULT_DOC),
+ doc = "<b><code>default<code> is deprecated for <code>attr.output_list</code>. Use "
+ + "Starlark macros to set the default for <code>output<code> and "
+ + "<code>output_list</code> attributes. <p>" + DEFAULT_DOC),
@Param(
name = DOC_ARG,
type = String.class,
@@ -826,7 +831,7 @@
useEnvironment = true)
public Descriptor outputListAttribute(
Boolean allowEmpty,
- SkylarkList<?> defaultList,
+ Object defaultList,
String doc,
Boolean mandatory,
Boolean nonEmpty,
diff --git a/src/main/java/com/google/devtools/build/lib/syntax/SkylarkSemantics.java b/src/main/java/com/google/devtools/build/lib/syntax/SkylarkSemantics.java
index 9805d61..bad29a9 100644
--- a/src/main/java/com/google/devtools/build/lib/syntax/SkylarkSemantics.java
+++ b/src/main/java/com/google/devtools/build/lib/syntax/SkylarkSemantics.java
@@ -131,6 +131,8 @@
public abstract boolean incompatibleNewActionsApi();
+ public abstract boolean incompatibleNoOutputAttrDefault();
+
public abstract boolean incompatibleNoSupportToolsInActionInputs();
public abstract boolean incompatibleNoTargetOutputGroup();
@@ -188,6 +190,7 @@
.incompatibleExpandDirectories(false)
.incompatibleGenerateJavaCommonSourceJar(false)
.incompatibleNewActionsApi(false)
+ .incompatibleNoOutputAttrDefault(false)
.incompatibleNoSupportToolsInActionInputs(false)
.incompatibleNoTargetOutputGroup(false)
.incompatibleNoTransitiveLoads(false)
@@ -246,6 +249,8 @@
public abstract Builder incompatibleNewActionsApi(boolean value);
+ public abstract Builder incompatibleNoOutputAttrDefault(boolean value);
+
public abstract Builder incompatibleNoSupportToolsInActionInputs(boolean value);
public abstract Builder incompatibleNoTargetOutputGroup(boolean value);
