feat(inlay-hints): show as int257 hint for Int typed fields without a TL-B type

Fixes #25

Author: i582

src/main/kotlin/org/tonstudio/tact/ide/hints/TactImplicitAsInt257HintsProvider.kt

@@ -0,0 +1,59 @@
+package org.tonstudio.tact.ide.hints
+
+import com.intellij.codeInsight.hints.declarative.*
+import com.intellij.openapi.editor.Editor
+import com.intellij.psi.PsiElement
+import com.intellij.psi.PsiFile
+import org.tonstudio.tact.lang.psi.*
+import org.tonstudio.tact.lang.psi.types.TactBaseTypeEx.Companion.toEx
+import org.tonstudio.tact.lang.psi.types.TactPrimitiveTypeEx
+import org.tonstudio.tact.lang.psi.types.TactPrimitiveTypes
+import org.tonstudio.tact.lang.psi.types.TactTypeEx
+
+class TactImplicitAsInt257HintsProvider : InlayHintsProvider {
+    override fun createCollector(file: PsiFile, editor: Editor) = Collector()
+
+    class Collector : SharedBypassCollector {
+        override fun collectFromElement(element: PsiElement, sink: InlayTreeSink) {
+            if (element !is TactFieldDeclaration) return
+
+            val typeNode = element.type ?: return
+            val type = element.fieldDefinition.getType(null) ?: return
+
+            // foo: Int
+            if (needImplicitHint(type)) {
+                addHint(sink, typeNode)
+            }
+
+            // foo: map<Int, Int>
+            if (typeNode is TactMapType) {
+                val key = typeNode.keyType.toEx()
+                val value = typeNode.valueType.toEx()
+
+                if (needImplicitHint(key)) {
+                    addHint(sink, typeNode.keyType!!)
+                }
+                if (needImplicitHint(value)) {
+                    addHint(sink, typeNode.valueType!!)
+                }
+            }
+        }
+
+        private fun needImplicitHint(type: TactTypeEx): Boolean =
+            type is TactPrimitiveTypeEx && type.name == TactPrimitiveTypes.INT && type.tlbType == null
+
+        private fun addHint(sink: InlayTreeSink, typeNode: TactType) {
+            sink.addPresentation(
+                InlineInlayPosition(typeNode.textRange.endOffset, true),
+                listOf(),
+                "Default TL-B serialization type for Int type.<br>Learn more in documentation: <a href=\"https://docs.tact-lang.org/book/integers/#common-serialization-types\">https://docs.tact-lang.org/book/integers/#common-serialization-types</a>",
+                HintFormat.default
+                    .withColorKind(HintColorKind.TextWithoutBackground)
+                    .withHorizontalMargin(HintMarginPadding.MarginAndSmallerPadding)
+                    .withFontSize(HintFontSize.AsInEditor)
+            ) {
+                text("as int257")
+            }
+        }
+    }
+}

src/main/kotlin/org/tonstudio/tact/ide/hints/TacRequireExitCodeHintsProvider.kt renamed to src/main/kotlin/org/tonstudio/tact/ide/hints/TactRequireExitCodeHintsProvider.kt

@@ -8,7 +8,7 @@ import org.tonstudio.tact.compiler.ExitCodeFormat
 import org.tonstudio.tact.compiler.requireFunctionExitCode
 import org.tonstudio.tact.lang.psi.*
 
-class TacRequireExitCodeHintsProvider : InlayHintsProvider {
+class TactRequireExitCodeHintsProvider : InlayHintsProvider {
     override fun createCollector(file: PsiFile, editor: Editor) = Collector()
 
     class Collector : SharedBypassCollector {

src/main/resources/META-INF/plugin.xml

@@ -99,10 +99,19 @@ Provides official support for <a href="https://tact-lang.org/">Tact</a> programm
                                               bundle="messages.TactBundle"
                                               nameKey="tact.inlay.hints.require.exit.code.info"
                                               group="VALUES_GROUP"
-                                              implementationClass="org.tonstudio.tact.ide.hints.TacRequireExitCodeHintsProvider"
+                                              implementationClass="org.tonstudio.tact.ide.hints.TactRequireExitCodeHintsProvider"
                                               isEnabledByDefault="true"
                                               providerId="tact.inlay.hints.require.exit.code.info"/>
 
+       <!--suppress PluginXmlCapitalization -->
+        <codeInsight.declarativeInlayProvider language="tact"
+                                              bundle="messages.TactBundle"
+                                              nameKey="tact.inlay.hints.implicit.as.int257"
+                                              group="VALUES_GROUP"
+                                              implementationClass="org.tonstudio.tact.ide.hints.TactImplicitAsInt257HintsProvider"
+                                              isEnabledByDefault="true"
+                                              providerId="tact.inlay.hints.implicit.as.int257"/>
+
         <codeInsight.parameterNameHints language="tact" id="TactParameterNameHintsProvider"
                                         implementationClass="org.tonstudio.tact.ide.hints.TactParameterNameHintsProvider"/>
 

src/main/resources/messages/TactBundle.properties

@@ -2,4 +2,5 @@ tact.inlay.hints.variables=Variable Type Hint
 tact.inlay.hints.get.methods=Get Method ID Hint
 tact.inlay.hints.assembly.info=Assembly Instruction Information Hint
 tact.inlay.hints.require.exit.code.info=Require Exit Code Hint
-tact.inlay.hints.gas.consumption=Assembly Sequence Gas Consumption
+tact.inlay.hints.gas.consumption=Assembly Sequence Gas Consumption Hint
+tact.inlay.hints.implicit.as.int257=Implicit `as int257` Hint