Replace Trailing Characters During Code Completion

src/main/kotlin/org/domaframework/doma/intellij/common/sql/directive/DirectiveCompletion.kt

@@ -23,6 +23,7 @@ class DirectiveCompletion(
     private val originalFile: PsiFile,
     private val bindText: String,
     private val element: PsiElement,
+    private val caretNextText: String,
     private val result: CompletionResultSet,
 ) {
     fun directiveHandle(symbol: String): Boolean {
@@ -52,6 +53,7 @@ class DirectiveCompletion(
                 StaticDirectiveHandler(
                     originalFile = originalFile,
                     element = element,
+                    caretNextText = caretNextText,
                     result = result,
                     bindText = bindText,
                 ).directiveHandle()

src/main/kotlin/org/domaframework/doma/intellij/common/sql/directive/StaticDirectiveHandler.kt

@@ -20,7 +20,7 @@ import com.intellij.openapi.module.Module
 import com.intellij.psi.PsiElement
 import com.intellij.psi.util.PsiTreeUtil
 import com.intellij.psi.util.elementType
-import org.domaframework.doma.intellij.common.sql.directive.collector.StaticBuildFunctionCollector
+import org.domaframework.doma.intellij.common.sql.directive.collector.FunctionCallCollector
 import org.domaframework.doma.intellij.common.sql.directive.collector.StaticClassPackageCollector
 import org.domaframework.doma.intellij.common.sql.directive.collector.StaticPropertyCollector
 import org.domaframework.doma.intellij.psi.SqlElClass
@@ -31,12 +31,14 @@ import org.jetbrains.kotlin.idea.base.util.module
 class StaticDirectiveHandler(
     originalFile: PsiElement,
     private val element: PsiElement,
+    private val caretNextText: String,
     private val result: CompletionResultSet,
     private val bindText: String,
 ) : DirectiveHandler(originalFile) {
     override fun directiveHandle(): Boolean {
         var handleResult = false
-        if (element.prevSibling is SqlElStaticFieldAccessExpr) {
+
+        if (isNextStaticFieldAccess(element)) {
             handleResult = staticDirectiveHandler(element, result)
         }
         if (handleResult) return true
@@ -60,20 +62,30 @@ class StaticDirectiveHandler(
         return handleResult
     }
 
+    private fun isNextStaticFieldAccess(element: PsiElement): Boolean {
+        val prev = PsiTreeUtil.prevLeaf(element)
+        return element.prevSibling is SqlElStaticFieldAccessExpr ||
+            (
+                prev?.elementType == SqlTypes.AT_SIGN &&
+                    prev.parent is SqlElStaticFieldAccessExpr
+            )
+    }
+
     private fun staticDirectiveHandler(
         element: PsiElement,
         result: CompletionResultSet,
     ): Boolean {
         val clazzRef =
             PsiTreeUtil
                 .getChildOfType(element.prevSibling, SqlElClass::class.java)
+                ?: PsiTreeUtil.getChildOfType(PsiTreeUtil.prevLeaf(element)?.parent, SqlElClass::class.java)
         val fqdn =
             PsiTreeUtil.getChildrenOfTypeAsList(clazzRef, PsiElement::class.java).joinToString("") { it.text }
 
-        val collector = StaticPropertyCollector(element, bindText)
+        val collector = StaticPropertyCollector(element, caretNextText, bindText)
         val candidates = collector.collectCompletionSuggest(fqdn) ?: return false
         result.addAllElements(candidates.field)
-        candidates.methods.map { m -> result.addElement(m) }
+        candidates.methods.forEach { m -> result.addElement(m) }
         return true
     }
 
@@ -93,7 +105,8 @@ class StaticDirectiveHandler(
     ): Boolean {
         if (BindDirectiveUtil.getDirectiveType(element) == DirectiveType.BUILT_IN) {
             val prefix = getBindSearchWord(element, bindText)
-            val collector = StaticBuildFunctionCollector(element.containingFile, prefix)
+            val collector =
+                FunctionCallCollector(element.containingFile, caretNextText, prefix)
             val candidates = collector.collect()
             candidates?.let { it1 -> result.addAllElements(it1) }
             return true

src/main/kotlin/org/domaframework/doma/intellij/common/sql/directive/StaticDirectiveHandlerData.kt

@@ -18,16 +18,6 @@ package org.domaframework.doma.intellij.common.sql.directive
 import com.intellij.codeInsight.lookup.LookupElement
 import com.intellij.codeInsight.lookup.VariableLookupItem
 import com.intellij.icons.AllIcons
-import com.intellij.psi.PsiType
-
-/**
- * Function information displayed with code completion for built-in functions
- */
-data class DomaFunction(
-    val name: String,
-    val returnType: PsiType,
-    val parameters: List<PsiType>,
-)
 
 /**
  * Show parameters in code completion for fields and methods

src/main/kotlin/org/domaframework/doma/intellij/common/sql/directive/collector/StaticBuildFunctionCollector.kt → src/main/kotlin/org/domaframework/doma/intellij/common/sql/directive/collector/FunctionCallCollector.kt

@@ -24,11 +24,13 @@ import com.intellij.psi.PsiModifier
 import org.domaframework.doma.intellij.common.CommonPathParameterUtil
 import org.domaframework.doma.intellij.common.config.DomaCompileConfigUtil
 import org.domaframework.doma.intellij.common.helper.ExpressionFunctionsHelper
+import org.domaframework.doma.intellij.common.util.SqlCompletionUtil.createMethodLookupElement
 import org.domaframework.doma.intellij.extension.getJavaClazz
 import org.jetbrains.kotlin.idea.base.util.module
 
-class StaticBuildFunctionCollector(
+class FunctionCallCollector(
     private val file: PsiFile?,
+    private val caretNextText: String,
     private val bind: String,
 ) : StaticDirectiveHandlerCollector() {
     public override fun collect(): List<LookupElement>? {
@@ -44,7 +46,13 @@ class StaticBuildFunctionCollector(
             }
 
         val customFunctionClassName =
-            project?.let { DomaCompileConfigUtil.getConfigValue(it, resourcePaths, "doma.expr.functions") }
+            project?.let {
+                DomaCompileConfigUtil.getConfigValue(
+                    it,
+                    resourcePaths,
+                    "doma.expr.functions",
+                )
+            }
 
         val expressionFunctionInterface =
             project?.let { ExpressionFunctionsHelper.setExpressionFunctionsInterface(it) }
@@ -62,21 +70,19 @@ class StaticBuildFunctionCollector(
             )
         }
 
-        if (functions.isEmpty()) {
-            functions.addAll(
-                expressionFunctionInterface.allMethods.filter {
-                    isPublicFunction(it)
-                },
-            )
-        }
+        functions.addAll(
+            expressionFunctionInterface.allMethods.filter {
+                isPublicFunction(it) && !functions.contains(it)
+            },
+        )
 
         return functions
             .filter {
                 it.name.startsWith(bind.substringAfter("@"))
             }.map {
                 val parameters = it.parameterList.parameters.toList()
                 LookupElementBuilder
-                    .create("${it.name}()")
+                    .create(createMethodLookupElement(caretNextText, it))
                     .withPresentableText(it.name)
                     .withTailText(
                         "(${

src/main/kotlin/org/domaframework/doma/intellij/common/sql/directive/collector/StaticPropertyCollector.kt

@@ -22,10 +22,12 @@ import com.intellij.psi.PsiElement
 import org.domaframework.doma.intellij.common.psi.PsiParentClass
 import org.domaframework.doma.intellij.common.psi.PsiStaticElement
 import org.domaframework.doma.intellij.common.sql.directive.CompletionSuggest
+import org.domaframework.doma.intellij.common.util.SqlCompletionUtil.createMethodLookupElement
 import org.domaframework.doma.intellij.extension.psi.psiClassType
 
 class StaticPropertyCollector(
     private val element: PsiElement,
+    private val caretNextText: String,
     private val bind: String,
 ) : StaticDirectiveHandlerCollector() {
     public override fun collectCompletionSuggest(fqdn: String): CompletionSuggest? {
@@ -39,7 +41,7 @@ class StaticPropertyCollector(
             val methods =
                 clazz.searchStaticMethod(bind)?.map { m ->
                     LookupElementBuilder
-                        .create("${m.name}()")
+                        .create(createMethodLookupElement(caretNextText, m))
                         .withPresentableText(m.name)
                         .withTailText(m.parameterList.text, true)
                         .withIcon(AllIcons.Nodes.Method)

src/main/kotlin/org/domaframework/doma/intellij/common/util/ForDirectiveUtil.kt

@@ -225,7 +225,7 @@ class ForDirectiveUtil {
                                 val classType = lastType.type as? PsiClassType
                                 val nestClass =
                                     if (classType != null &&
-                                        PsiClassTypeUtil.Companion.isIterableType(
+                                        PsiClassTypeUtil.isIterableType(
                                             classType,
                                             project,
                                         )

src/main/kotlin/org/domaframework/doma/intellij/common/util/SqlCompletionUtil.kt

@@ -0,0 +1,30 @@
+/*
+ * Copyright Doma Tools Authors
+ *
+ * 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 org.domaframework.doma.intellij.common.util
+
+import com.intellij.psi.PsiMethod
+
+object SqlCompletionUtil {
+    fun createMethodLookupElement(
+        caretNextText: String,
+        method: PsiMethod,
+    ): String =
+        if (caretNextText == "(") {
+            method.name
+        } else {
+            "${method.name}()"
+        }
+}

src/main/kotlin/org/domaframework/doma/intellij/contributor/sql/provider/SqlParameterCompletionProvider.kt

@@ -43,6 +43,7 @@ import org.domaframework.doma.intellij.common.sql.directive.DirectiveCompletion
 import org.domaframework.doma.intellij.common.sql.validator.result.ValidationCompleteResult
 import org.domaframework.doma.intellij.common.util.ForDirectiveUtil
 import org.domaframework.doma.intellij.common.util.PluginLoggerUtil
+import org.domaframework.doma.intellij.common.util.SqlCompletionUtil.createMethodLookupElement
 import org.domaframework.doma.intellij.extension.getJavaClazz
 import org.domaframework.doma.intellij.extension.psi.findNodeParent
 import org.domaframework.doma.intellij.extension.psi.findSelfBlocks
@@ -78,6 +79,11 @@ class SqlParameterCompletionProvider : CompletionProvider<CompletionParameters>(
         val startTime = System.nanoTime()
 
         var isDirective = false
+        val offset = parameters.editor.caretModel.currentCaret.offset
+        val range =
+            com.intellij.openapi.util
+                .TextRange(offset, offset + 1)
+        val caretNextText = parameters.editor.document.getText(range)
         try {
             val originalFile = parameters.originalFile
             val pos = parameters.originalPosition ?: return
@@ -86,7 +92,7 @@ class SqlParameterCompletionProvider : CompletionProvider<CompletionParameters>(
                     .substringAfter("/*")
                     .substringBefore("*/")
 
-            val handler = DirectiveCompletion(originalFile, bindText, pos, result)
+            val handler = DirectiveCompletion(originalFile, bindText, pos, caretNextText, result)
             val directiveSymbols = listOf("%", "#", "^", "@")
             directiveSymbols.forEach {
                 if (!isDirective) {
@@ -118,6 +124,7 @@ class SqlParameterCompletionProvider : CompletionProvider<CompletionParameters>(
                     blockElements,
                     pos,
                     originalFile,
+                    caretNextText,
                     result,
                 )
                 PluginLoggerUtil.countLogging(
@@ -268,6 +275,7 @@ class SqlParameterCompletionProvider : CompletionProvider<CompletionParameters>(
         elements: List<PsiElement>,
         position: PsiElement,
         originalFile: PsiFile,
+        caretNextText: String,
         result: CompletionResultSet,
     ) {
         val daoMethod = findDaoMethod(originalFile)
@@ -281,7 +289,7 @@ class SqlParameterCompletionProvider : CompletionProvider<CompletionParameters>(
         val topText = cleanString(getSearchElementText(top))
         val prevWord = PsiPatternUtil.getBindSearchWord(originalFile, elements.last(), " ")
         if (prevWord.startsWith("@") && prevWord.endsWith("@")) {
-            setCompletionStaticFieldAccess(top, prevWord, topText, result)
+            setCompletionStaticFieldAccess(top, prevWord, caretNextText, topText, result)
             return
         }
 
@@ -298,7 +306,7 @@ class SqlParameterCompletionProvider : CompletionProvider<CompletionParameters>(
         val psiDaoMethod = PsiDaoMethod(project, daoMethod)
         if (topElementType == null) {
             isBatchAnnotation = psiDaoMethod.daoType.isBatchAnnotation()
-            if (isFieldAccessByForItem(top, elements, searchText, isBatchAnnotation, result)) return
+            if (isFieldAccessByForItem(top, elements, searchText, caretNextText, isBatchAnnotation, result)) return
             topElementType =
                 getElementTypeByFieldAccess(originalFile, position, elements, daoMethod, result) ?: return
         }
@@ -309,6 +317,7 @@ class SqlParameterCompletionProvider : CompletionProvider<CompletionParameters>(
             isBatchAnnotation,
             elements,
             searchText,
+            caretNextText,
             result,
         )
     }
@@ -399,6 +408,7 @@ class SqlParameterCompletionProvider : CompletionProvider<CompletionParameters>(
     ): PsiClass? = top.project.getJavaClazz(fqdnGetter())
 
     private fun setFieldsAndMethodsCompletionResultSet(
+        caretNextText: String,
         fields: Array<PsiField>,
         methods: Array<PsiMethod>,
         result: CompletionResultSet,
@@ -407,7 +417,7 @@ class SqlParameterCompletionProvider : CompletionProvider<CompletionParameters>(
         methods.forEach { method ->
             val lookupElm =
                 LookupElementBuilder
-                    .create("${method.name}()")
+                    .create(createMethodLookupElement(caretNextText, method))
                     .withPresentableText(method.name)
                     .withTailText(method.parameterList.text, true)
                     .withTypeText(method.returnType?.presentableText ?: "")
@@ -422,6 +432,7 @@ class SqlParameterCompletionProvider : CompletionProvider<CompletionParameters>(
         top: PsiElement,
         elements: List<PsiElement>,
         searchWord: String,
+        caretNextText: String,
         isBatchAnnotation: Boolean = false,
         result: CompletionResultSet,
     ): Boolean {
@@ -448,6 +459,7 @@ class SqlParameterCompletionProvider : CompletionProvider<CompletionParameters>(
                 dropLastIndex = 1,
                 complete = { lastType ->
                     setFieldsAndMethodsCompletionResultSet(
+                        caretNextText,
                         lastType.searchField(searchWord)?.toTypedArray() ?: emptyArray(),
                         lastType.searchMethod(searchWord)?.toTypedArray() ?: emptyArray(),
                         result,
@@ -463,6 +475,7 @@ class SqlParameterCompletionProvider : CompletionProvider<CompletionParameters>(
         isBatchAnnotation: Boolean,
         elements: List<PsiElement>,
         searchWord: String,
+        caretNextText: String,
         result: CompletionResultSet,
     ) {
         var psiParentClass = PsiParentClass(topElementType)
@@ -477,6 +490,7 @@ class SqlParameterCompletionProvider : CompletionProvider<CompletionParameters>(
             dropLastIndex = 1,
             complete = { lastType ->
                 setFieldsAndMethodsCompletionResultSet(
+                    caretNextText,
                     lastType.searchField(searchWord)?.toTypedArray() ?: emptyArray(),
                     lastType.searchMethod(searchWord)?.toTypedArray() ?: emptyArray(),
                     result,
@@ -488,6 +502,7 @@ class SqlParameterCompletionProvider : CompletionProvider<CompletionParameters>(
     private fun setCompletionStaticFieldAccess(
         top: PsiElement,
         prevWord: String,
+        caretNextText: String,
         topText: String,
         result: CompletionResultSet,
     ) {
@@ -496,6 +511,6 @@ class SqlParameterCompletionProvider : CompletionProvider<CompletionParameters>(
         val matchMethod = clazz.searchStaticMethod(topText)
 
         // When you enter here, it is the top element, so return static fields and methods.
-        setFieldsAndMethodsCompletionResultSet(matchFields, matchMethod, result)
+        setFieldsAndMethodsCompletionResultSet(caretNextText, matchFields, matchMethod, result)
     }
 }