[2020.3 compat] remove obsolete StatementParsing.FUTURE flag from s…

…dkcompat

The flag is nonexistent in the sdk for 2020.3. The flag has been used previously for Python 2.6 support of `__future__` imports of `print_function` but [is obsolete](JetBrains/intellij-community@7ec52fb) since 2.6 support has been dropped [since 2019.1](https://github.com/JetBrains/intellij-community/blob/a251e6a423baa93fc6fd85038ec9ccec63fc2797/python/python-psi-api/src/com/jetbrains/python/psi/LanguageLevel.java)

For reasons of having a simple implementation of compatibility with old sdks and reducing the maintenance burden we chose to pass the StatementParsing.FUTURE as null for versions < 203.

PiperOrigin-RevId: 357909336

sdkcompat/v193/com/google/idea/sdkcompat/python/ParsingContextAdapter.java

@@ -0,0 +1,19 @@
+package com.google.idea.sdkcompat.python;
+
+import com.intellij.lang.PsiBuilder;
+import com.jetbrains.python.parsing.ParsingContext;
+import com.jetbrains.python.psi.LanguageLevel;
+
+/** Compatibility adapter for {@link ParsingContext}. #api202 */
+public class ParsingContextAdapter extends ParsingContext {
+  /** #api202: Constructor does NOT accept the additional futureFlag parameter anymore in 2020.3 */
+  public ParsingContextAdapter(PsiBuilder builder, LanguageLevel languageLevel) {
+    // For reasons of having a simple implementation of compatibility with old sdks and reducing the
+    // maintenance burden we chose to pass the StatementParsing.FUTURE as null for versions < 203.
+    // we expect this to only impact python versions below 2.7.
+    // Python 2.67, the last version below 2.7, is officially unsupported
+    // and a potential security risk context: https://www.python.org/downloads/release/python-267/
+
+    super(builder, languageLevel, /* futureFlag= */ null);
+  }
+}

sdkcompat/v193/com/google/idea/sdkcompat/python/PyParserAdapter.java

@@ -6,18 +6,20 @@
 import com.jetbrains.python.parsing.StatementParsing;
 import com.jetbrains.python.psi.LanguageLevel;
 
-/** Compatibility adapter for {@link PyParser}. #api201 */
+/** Compatibility adapter for {@link PyParser}. #api202 */
 public abstract class PyParserAdapter extends PyParser {
 
-  /** #api201: Super method uses new interface SyntaxTreeBuilder in 2020.2 */
+  /**
+   * #api201: Super method uses new interface SyntaxTreeBuilder in 2020.2
+   *
+   * <p>#api202: Super method does not require futureFlag anymore in 2020.3
+   */
   @Override
   protected ParsingContext createParsingContext(
       PsiBuilder builder, LanguageLevel languageLevel, StatementParsing.FUTURE futureFlag) {
-    return createParsingContext(SyntaxTreeBuilderWrapper.wrap(builder), languageLevel, futureFlag);
+    return createParsingContext(SyntaxTreeBuilderWrapper.wrap(builder), languageLevel);
   }
 
   protected abstract ParsingContext createParsingContext(
-      SyntaxTreeBuilderWrapper builder,
-      LanguageLevel languageLevel,
-      StatementParsing.FUTURE futureFlag);
+      SyntaxTreeBuilderWrapper builder, LanguageLevel languageLevel);
 }

sdkcompat/v201/com/google/idea/sdkcompat/python/ParsingContextAdapter.java

@@ -0,0 +1,19 @@
+package com.google.idea.sdkcompat.python;
+
+import com.intellij.lang.PsiBuilder;
+import com.jetbrains.python.parsing.ParsingContext;
+import com.jetbrains.python.psi.LanguageLevel;
+
+/** Compatibility adapter for {@link ParsingContext}. #api202 */
+public class ParsingContextAdapter extends ParsingContext {
+  /** #api202: Constructor does NOT accept the additional futureFlag parameter anymore in 2020.3 */
+  public ParsingContextAdapter(PsiBuilder builder, LanguageLevel languageLevel) {
+    // For reasons of having a simple implementation of compatibility with old sdks and reducing the
+    // maintenance burden we chose to pass the StatementParsing.FUTURE as null for versions < 203.
+    // we expect this to only impact python versions below 2.7.
+    // Python 2.67, the last version below 2.7, is officially unsupported
+    // and a potential security risk context: https://www.python.org/downloads/release/python-267/
+
+    super(builder, languageLevel, /* futureFlag= */ null);
+  }
+}

sdkcompat/v201/com/google/idea/sdkcompat/python/PyParserAdapter.java

@@ -9,15 +9,17 @@
 /** Compatibility adapter for {@link PyParser}. #api201 */
 public abstract class PyParserAdapter extends PyParser {
 
-  /** #api201: Super method uses new interface SyntaxTreeBuilder in 2020.2 */
+  /**
+   * #api201: Super method uses new interface SyntaxTreeBuilder in 2020.2
+   *
+   * <p>#api202: Super method does not require futureFlag anymore in 2020.3
+   */
   @Override
   protected ParsingContext createParsingContext(
       PsiBuilder builder, LanguageLevel languageLevel, StatementParsing.FUTURE futureFlag) {
-    return createParsingContext(SyntaxTreeBuilderWrapper.wrap(builder), languageLevel, futureFlag);
+    return createParsingContext(SyntaxTreeBuilderWrapper.wrap(builder), languageLevel);
   }
 
   protected abstract ParsingContext createParsingContext(
-      SyntaxTreeBuilderWrapper builder,
-      LanguageLevel languageLevel,
-      StatementParsing.FUTURE futureFlag);
+      SyntaxTreeBuilderWrapper builder, LanguageLevel languageLevel);
 }

sdkcompat/v202/com/google/idea/sdkcompat/python/ParsingContextAdapter.java

@@ -0,0 +1,19 @@
+package com.google.idea.sdkcompat.python;
+
+import com.intellij.lang.SyntaxTreeBuilder;
+import com.jetbrains.python.parsing.ParsingContext;
+import com.jetbrains.python.psi.LanguageLevel;
+
+/** Compatibility adapter for {@link ParsingContext}. #api202 */
+public class ParsingContextAdapter extends ParsingContext {
+  /** #api202: Constructor does NOT accept the additional futureFlag parameter anymore in 2020.3 */
+  public ParsingContextAdapter(SyntaxTreeBuilder builder, LanguageLevel languageLevel) {
+    // For reasons of having a simple implementation of compatibility with old sdks and reducing the
+    // maintenance burden we chose to pass the StatementParsing.FUTURE as null for versions < 203.
+    // we expect this to only impact python versions below 2.7.
+    // Python 2.67, the last version below 2.7, is officially unsupported
+    // and a potential security risk context: https://www.python.org/downloads/release/python-267/
+
+    super(builder, languageLevel, /* futureFlag= */ null);
+  }
+}

sdkcompat/v202/com/google/idea/sdkcompat/python/PyParserAdapter.java

@@ -3,21 +3,23 @@
 import com.intellij.lang.SyntaxTreeBuilder;
 import com.jetbrains.python.parsing.ParsingContext;
 import com.jetbrains.python.parsing.PyParser;
-import com.jetbrains.python.parsing.StatementParsing;
+import com.jetbrains.python.parsing.StatementParsing.FUTURE;
 import com.jetbrains.python.psi.LanguageLevel;
 
-/** Compatibility adapter for {@link PyParser}. #api201 */
+/** Compatibility adapter for {@link PyParser}. #api202 */
 public abstract class PyParserAdapter extends PyParser {
 
-  /** #api201: Super method uses new interface SyntaxTreeBuilder in 2020.2 */
+  /**
+   * #api201: Super method uses new interface SyntaxTreeBuilder in 2020.2
+   *
+   * <p>#api202: Super method does not require futureFlag anymore in 2020.3
+   */
   @Override
   protected ParsingContext createParsingContext(
-      SyntaxTreeBuilder builder, LanguageLevel languageLevel, StatementParsing.FUTURE futureFlag) {
-    return createParsingContext(SyntaxTreeBuilderWrapper.wrap(builder), languageLevel, futureFlag);
+      SyntaxTreeBuilder builder, LanguageLevel languageLevel, FUTURE futureFlag) {
+    return createParsingContext(SyntaxTreeBuilderWrapper.wrap(builder), languageLevel);
   }
 
   protected abstract ParsingContext createParsingContext(
-      SyntaxTreeBuilderWrapper builder,
-      LanguageLevel languageLevel,
-      StatementParsing.FUTURE futureFlag);
+      SyntaxTreeBuilderWrapper builder, LanguageLevel languageLevel);
 }

sdkcompat/v203/com/google/idea/sdkcompat/python/ParsingContextAdapter.java

@@ -0,0 +1,13 @@
+package com.google.idea.sdkcompat.python;
+
+import com.intellij.lang.SyntaxTreeBuilder;
+import com.jetbrains.python.parsing.ParsingContext;
+import com.jetbrains.python.psi.LanguageLevel;
+
+/** Compatibility adapter for {@link ParsingContext}. #api202 */
+public class ParsingContextAdapter extends ParsingContext {
+  /** #api202: Constructor does NOT accept the additional futureFlag parameter anymore in 2020.3 */
+  public ParsingContextAdapter(SyntaxTreeBuilder builder, LanguageLevel languageLevel) {
+    super(builder, languageLevel);
+  }
+}

sdkcompat/v203/com/google/idea/sdkcompat/python/PyParserAdapter.java

@@ -3,21 +3,22 @@
 import com.intellij.lang.SyntaxTreeBuilder;
 import com.jetbrains.python.parsing.ParsingContext;
 import com.jetbrains.python.parsing.PyParser;
-import com.jetbrains.python.parsing.StatementParsing;
 import com.jetbrains.python.psi.LanguageLevel;
 
-/** Compatibility adapter for {@link PyParser}. #api201 */
+/** Compatibility adapter for {@link PyParser}. #api202 */
 public abstract class PyParserAdapter extends PyParser {
 
-  /** #api201: Super method uses new interface SyntaxTreeBuilder in 2020.2 */
+  /**
+   * #api201: Super method uses new interface SyntaxTreeBuilder in 2020.2
+   *
+   * <p>#api202: Super method does not require futureFlag anymore in 2020.3
+   */
   @Override
   protected ParsingContext createParsingContext(
-      SyntaxTreeBuilder builder, LanguageLevel languageLevel, StatementParsing.FUTURE futureFlag) {
-    return createParsingContext(SyntaxTreeBuilderWrapper.wrap(builder), languageLevel, futureFlag);
+      SyntaxTreeBuilder builder, LanguageLevel languageLevel) {
+    return createParsingContext(SyntaxTreeBuilderWrapper.wrap(builder), languageLevel);
   }
 
   protected abstract ParsingContext createParsingContext(
-      SyntaxTreeBuilderWrapper builder,
-      LanguageLevel languageLevel,
-      StatementParsing.FUTURE futureFlag);
+      SyntaxTreeBuilderWrapper builder, LanguageLevel languageLevel);
 }