Fix autopopup completion with irrelevant variants after typing 'f' suffix for float number

#KT-4312 Fixed

idea/src/org/jetbrains/jet/plugin/liveTemplates/JetLiveTemplateCompletionContributor.java

@@ -24,27 +24,46 @@ import com.intellij.codeInsight.template.impl.TemplateImpl;
 import com.intellij.codeInsight.template.impl.TemplateManagerImpl;
 import com.intellij.codeInsight.template.impl.TemplateSettings;
 import com.intellij.openapi.util.Ref;
+import com.intellij.patterns.ElementPattern;
 import com.intellij.patterns.PlatformPatterns;
+import com.intellij.psi.JavaTokenType;
+import com.intellij.psi.PsiElement;
 import com.intellij.psi.PsiFile;
 import com.intellij.util.Consumer;
 import com.intellij.util.ProcessingContext;
 import com.intellij.util.containers.ContainerUtil;
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.jet.lexer.JetToken;
+import org.jetbrains.jet.lexer.JetTokens;
 
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Set;
 
+import static com.intellij.patterns.PsiJavaPatterns.elementType;
+import static com.intellij.patterns.PsiJavaPatterns.psiElement;
+
 public class JetLiveTemplateCompletionContributor extends CompletionContributor {
+    private static final ElementPattern<PsiElement> AFTER_NUMBER_LITERAL = psiElement().afterLeafSkipping(
+            psiElement().withText(""),
+            psiElement().withElementType(elementType().oneOf(JetTokens.FLOAT_LITERAL, JetTokens.INTEGER_LITERAL)));
+
     public JetLiveTemplateCompletionContributor() {
         extend(CompletionType.BASIC, PlatformPatterns.psiElement(), new CompletionProvider<CompletionParameters>() {
             @Override
             protected void addCompletions(@NotNull CompletionParameters parameters,
                                           ProcessingContext context,
                                           @NotNull final CompletionResultSet result) {
+                if (AFTER_NUMBER_LITERAL.accepts(parameters.getPosition())) {
+                    // First Kotlin completion contributors - stop here will stop all completion
+                    result.stopHere();
+                    return;
+                }
+
                 if (parameters.getInvocationCount() == 0) {
                     return;
                 }
+
                 PsiFile file = parameters.getPosition().getContainingFile();
                 int offset = parameters.getOffset();
                 final List<TemplateImpl> templates = listApplicableTemplates(file, offset);

idea/testData/completion/basic/common/AfterFloatOnNewLine.kt

@@ -0,0 +1,7 @@
+fun test() {
+    val some = 1
+    val f = 1.0f
+    som<caret>
+}
+
+// EXIST: some

idea/testData/completion/basic/common/AfterIntSeparatedWithComments.kt

@@ -0,0 +1,7 @@
+fun test() {
+    val floor = "Floor"
+    val a = 1/**/f<caret>
+}
+
+// EXIST: floor
+// EXIST: false

idea/testData/completion/basic/common/ExtensionToIntInFloatStyle.kt

@@ -0,0 +1,5 @@
+val Int.f: Float get() = this.toFloat()
+
+val test = 1.<caret>
+
+// EXIST: f

idea/testData/completion/basic/common/NoCompletionAfterBigFloat.kt

@@ -0,0 +1,3 @@
+val a = 1.0F<caret>
+
+// NUMBER: 0

idea/testData/completion/basic/common/NoCompletionAfterFloat.kt

@@ -0,0 +1,3 @@
+val a = 1.0f<caret>
+
+// NUMBER: 0

idea/testData/completion/basic/common/NoCompletionAfterInt.kt

@@ -0,0 +1,5 @@
+fun test() {
+    val a = 10<caret>
+}
+
+// NUMBER: 0

idea/testData/completion/basic/common/NoCompletionAfterLong.kt

@@ -0,0 +1,3 @@
+val a = 1L<caret>
+
+// NUMBER: 0

idea/tests/org/jetbrains/jet/completion/JetBasicJSCompletionTestGenerated.java

@@ -35,6 +35,16 @@ public class JetBasicJSCompletionTestGenerated extends AbstractJSBasicCompletion
     @TestMetadata("idea/testData/completion/basic/common")
     @InnerTestClasses({Common.Extensions.class})
     public static class Common extends AbstractJSBasicCompletionTest {
+        @TestMetadata("AfterFloatOnNewLine.kt")
+        public void testAfterFloatOnNewLine() throws Exception {
+            doTest("idea/testData/completion/basic/common/AfterFloatOnNewLine.kt");
+        }
+        
+        @TestMetadata("AfterIntSeparatedWithComments.kt")
+        public void testAfterIntSeparatedWithComments() throws Exception {
+            doTest("idea/testData/completion/basic/common/AfterIntSeparatedWithComments.kt");
+        }
+        
         public void testAllFilesPresentInCommon() throws Exception {
             JetTestUtils.assertAllTestsPresentByMetadata(this.getClass(), "org.jetbrains.jet.generators.tests.GenerateTests", new File("idea/testData/completion/basic/common"), Pattern.compile("^(.+)\\.kt$"), true);
         }
@@ -139,6 +149,11 @@ public class JetBasicJSCompletionTestGenerated extends AbstractJSBasicCompletion
             doTest("idea/testData/completion/basic/common/ExtensionInsideFunction.kt");
         }
         
+        @TestMetadata("ExtensionToIntInFloatStyle.kt")
+        public void testExtensionToIntInFloatStyle() throws Exception {
+            doTest("idea/testData/completion/basic/common/ExtensionToIntInFloatStyle.kt");
+        }
+        
         @TestMetadata("ExtensionWithAdditionalTypeParameters.kt")
         public void testExtensionWithAdditionalTypeParameters() throws Exception {
             doTest("idea/testData/completion/basic/common/ExtensionWithAdditionalTypeParameters.kt");
@@ -299,6 +314,26 @@ public class JetBasicJSCompletionTestGenerated extends AbstractJSBasicCompletion
             doTest("idea/testData/completion/basic/common/NoClassNameDuplication.kt");
         }
         
+        @TestMetadata("NoCompletionAfterBigFloat.kt")
+        public void testNoCompletionAfterBigFloat() throws Exception {
+            doTest("idea/testData/completion/basic/common/NoCompletionAfterBigFloat.kt");
+        }
+        
+        @TestMetadata("NoCompletionAfterFloat.kt")
+        public void testNoCompletionAfterFloat() throws Exception {
+            doTest("idea/testData/completion/basic/common/NoCompletionAfterFloat.kt");
+        }
+        
+        @TestMetadata("NoCompletionAfterInt.kt")
+        public void testNoCompletionAfterInt() throws Exception {
+            doTest("idea/testData/completion/basic/common/NoCompletionAfterInt.kt");
+        }
+        
+        @TestMetadata("NoCompletionAfterLong.kt")
+        public void testNoCompletionAfterLong() throws Exception {
+            doTest("idea/testData/completion/basic/common/NoCompletionAfterLong.kt");
+        }
+        
         @TestMetadata("NoEmptyNamespace.kt")
         public void testNoEmptyNamespace() throws Exception {
             doTest("idea/testData/completion/basic/common/NoEmptyNamespace.kt");

idea/tests/org/jetbrains/jet/completion/JetBasicJavaCompletionTestGenerated.java

@@ -35,6 +35,16 @@ public class JetBasicJavaCompletionTestGenerated extends AbstractJvmBasicComplet
     @TestMetadata("idea/testData/completion/basic/common")
     @InnerTestClasses({Common.Extensions.class})
     public static class Common extends AbstractJvmBasicCompletionTest {
+        @TestMetadata("AfterFloatOnNewLine.kt")
+        public void testAfterFloatOnNewLine() throws Exception {
+            doTest("idea/testData/completion/basic/common/AfterFloatOnNewLine.kt");
+        }
+        
+        @TestMetadata("AfterIntSeparatedWithComments.kt")
+        public void testAfterIntSeparatedWithComments() throws Exception {
+            doTest("idea/testData/completion/basic/common/AfterIntSeparatedWithComments.kt");
+        }
+        
         public void testAllFilesPresentInCommon() throws Exception {
             JetTestUtils.assertAllTestsPresentByMetadata(this.getClass(), "org.jetbrains.jet.generators.tests.GenerateTests", new File("idea/testData/completion/basic/common"), Pattern.compile("^(.+)\\.kt$"), true);
         }
@@ -139,6 +149,11 @@ public class JetBasicJavaCompletionTestGenerated extends AbstractJvmBasicComplet
             doTest("idea/testData/completion/basic/common/ExtensionInsideFunction.kt");
         }
         
+        @TestMetadata("ExtensionToIntInFloatStyle.kt")
+        public void testExtensionToIntInFloatStyle() throws Exception {
+            doTest("idea/testData/completion/basic/common/ExtensionToIntInFloatStyle.kt");
+        }
+        
         @TestMetadata("ExtensionWithAdditionalTypeParameters.kt")
         public void testExtensionWithAdditionalTypeParameters() throws Exception {
             doTest("idea/testData/completion/basic/common/ExtensionWithAdditionalTypeParameters.kt");
@@ -299,6 +314,26 @@ public class JetBasicJavaCompletionTestGenerated extends AbstractJvmBasicComplet
             doTest("idea/testData/completion/basic/common/NoClassNameDuplication.kt");
         }
         
+        @TestMetadata("NoCompletionAfterBigFloat.kt")
+        public void testNoCompletionAfterBigFloat() throws Exception {
+            doTest("idea/testData/completion/basic/common/NoCompletionAfterBigFloat.kt");
+        }
+        
+        @TestMetadata("NoCompletionAfterFloat.kt")
+        public void testNoCompletionAfterFloat() throws Exception {
+            doTest("idea/testData/completion/basic/common/NoCompletionAfterFloat.kt");
+        }
+        
+        @TestMetadata("NoCompletionAfterInt.kt")
+        public void testNoCompletionAfterInt() throws Exception {
+            doTest("idea/testData/completion/basic/common/NoCompletionAfterInt.kt");
+        }
+        
+        @TestMetadata("NoCompletionAfterLong.kt")
+        public void testNoCompletionAfterLong() throws Exception {
+            doTest("idea/testData/completion/basic/common/NoCompletionAfterLong.kt");
+        }
+        
         @TestMetadata("NoEmptyNamespace.kt")
         public void testNoEmptyNamespace() throws Exception {
             doTest("idea/testData/completion/basic/common/NoEmptyNamespace.kt");