Display internal errors in the build window

Author: waleedyaseen

CHANGELOG.md

@@ -2,6 +2,9 @@
 
 ## [Unreleased]
 
+### Changed
+- The build window will now display internal compiler errors as well.
+
 ## [1.2.0] - 2023-08-18
 
 ### Added

src/main/kotlin/io/runescript/plugin/ide/execution/build/RsBuildOutputParser.kt

@@ -4,6 +4,7 @@ import com.intellij.build.FilePosition
 import com.intellij.build.events.BuildEvent
 import com.intellij.build.events.MessageEvent
 import com.intellij.build.events.impl.FileMessageEventImpl
+import com.intellij.build.events.impl.MessageEventImpl
 import com.intellij.build.output.BuildOutputInstantReader
 import com.intellij.build.output.BuildOutputParser
 import java.io.File
@@ -14,15 +15,21 @@ class RsBuildOutputParser(private val instance: RsBuildInstance) : BuildOutputPa
     private val fileMessageContext = FileMessageContext()
     private val detailsBuilder = StringBuilder()
     private var detailsCount = 0
+    private var collectingStackTrace = false
 
-    override fun parse(line: String, reader: BuildOutputInstantReader, messageConsumer: Consumer<in BuildEvent>): Boolean {
+    override fun parse(
+        line: String,
+        reader: BuildOutputInstantReader,
+        messageConsumer: Consumer<in BuildEvent>
+    ): Boolean {
         if (detailsCount > 0) {
             detailsCount--
             detailsBuilder.appendLine(line)
             if (detailsCount == 0) {
                 val filePath = File(fileMessageContext.path)
                 val filePosition = FilePosition(filePath, fileMessageContext.line, fileMessageContext.column)
-                val fileMessage = FileMessageEventImpl(instance.buildId,
+                val fileMessage = FileMessageEventImpl(
+                    instance.buildId,
                     MessageEvent.Kind.ERROR,
                     "Compiler Errors",
                     fileMessageContext.message,
@@ -45,12 +52,39 @@ class RsBuildOutputParser(private val instance: RsBuildInstance) : BuildOutputPa
             detailsCount = 2
             return true
         }
+        if (collectingStackTrace) {
+            if (line.startsWith("Process finished")) {
+                val fileMessage = MessageEventImpl(
+                    instance.buildId,
+                    MessageEvent.Kind.ERROR,
+                    "Compiler Errors",
+                    "Internal Error",
+                    detailsBuilder.toString()
+                )
+                messageConsumer.accept(fileMessage)
+                collectingStackTrace = false
+            } else {
+                detailsBuilder.appendLine(line)
+            }
+        } else if (line.startsWith(EXCEPTION_BEGINNING)) {
+            detailsBuilder.setLength(0)
+            val exceptionLine = line.substring(line.indexOf('"', EXCEPTION_BEGINNING.length) + 2)
+            detailsBuilder.appendLine(exceptionLine)
+            collectingStackTrace = true
+        }
         return false
     }
 
     companion object {
-        private val ERROR_PATTERN = Regex("(?<path>.+):(?<line>\\d+):(?<column>\\d+): (?:ERROR|SYNTAX_ERROR): (?<message>[^\\r\\n]+)")
+        private val ERROR_PATTERN =
+            Regex("(?<path>.+):(?<line>\\d+):(?<column>\\d+): (?:ERROR|SYNTAX_ERROR): (?<message>[^\\r\\n]+)")
+        private const val EXCEPTION_BEGINNING = "Exception in thread \""
     }
 }
 
-private data class FileMessageContext(var path: String = "", var line: Int = 0, var column: Int = 0, var message: String = "")
+private data class FileMessageContext(
+    var path: String = "",
+    var line: Int = 0,
+    var column: Int = 0,
+    var message: String = ""
+)