feat(devin-lang): add support for DevInAstFactory and DevInTypedHandler. #101

The commit introduces a new file `DevInAstFactory.kt` that extends `ASTFactory`, providing a custom factory for the DevIn language. This class is responsible for creating Abstract Syntax Trees (ASTs) for the DevIn language.

Another new file `DevInTypedHandler.kt` is added, which extends `TypedHandlerDelegate`. This class handles keyboard input within the DevIn language file, providing support for auto-completion and other editor actions.

The `cc.unitmesh.language.xml` file is modified to register the newly created `DevInAstFactory` and `DevInTypedHandler` with the IntelliJ platform. This ensures that the custom functionality is integrated into the IDE's features for the DevIn language.

Author: phodal

exts/devin-lang/src/main/kotlin/cc/unitmesh/language/DevInAstFactory.kt

@@ -0,0 +1,5 @@
+package cc.unitmesh.language
+
+import com.intellij.lang.ASTFactory
+
+class DevInAstFactory : ASTFactory()

exts/devin-lang/src/main/kotlin/cc/unitmesh/language/DevInTypedHandler.kt

@@ -0,0 +1,34 @@
+package cc.unitmesh.language
+
+import cc.unitmesh.language.psi.DevInFile
+import com.intellij.codeInsight.editorActions.TypedHandlerDelegate
+import com.intellij.openapi.editor.Editor
+import com.intellij.openapi.project.Project
+import com.intellij.psi.PsiFile
+
+class DevInTypedHandler : TypedHandlerDelegate() {
+
+    override fun checkAutoPopup(charTyped: Char, project: Project, editor: Editor, file: PsiFile): Result {
+        if (file !is DevInFile) {
+            return Result.CONTINUE
+        }
+
+        return when (charTyped) {
+            '@' -> {
+                Result.STOP
+            }
+
+            '/' -> {
+                Result.STOP
+            }
+
+            '$' -> {
+                Result.STOP
+            }
+
+            else -> {
+                Result.CONTINUE
+            }
+        }
+    }
+}

exts/devin-lang/src/main/resources/cc.unitmesh.language.xml

@@ -7,5 +7,10 @@
         <lang.parserDefinition language="DevIn" implementationClass="cc.unitmesh.language.DevInParserDefinition"/>
         <lang.syntaxHighlighterFactory language="DevIn"
                                        implementationClass="cc.unitmesh.language.DevInSyntaxHighlighterFactory"/>
+
+        <lang.ast.factory language="DevIn"
+                          implementationClass="cc.unitmesh.language.DevInAstFactory"/>
+
+        <typedHandler implementation="cc.unitmesh.language.DevInTypedHandler"/>
     </extensions>
 </idea-plugin>