1 /*
2  * Copyright 2025 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 @file:JvmName("KSPLoggerUtil")
17 
18 package androidx.appfunctions.compiler.core
19 
20 import com.google.devtools.ksp.processing.KSPLogger
21 import com.google.devtools.ksp.symbol.FileLocation
22 import java.io.File
23 
24 /** Logs a [ProcessingException] with detail about the error location. */
logExceptionnull25 fun KSPLogger.logException(exception: ProcessingException) {
26     val location = exception.symbol?.location as? FileLocation
27     if (location == null) {
28         error("AppFunction compiler failed: ${exception.message}", exception.symbol)
29         return
30     }
31 
32     val filePath = location.filePath
33     val errorLineNumber = location.lineNumber
34     val fileContent = File(filePath).readLines()
35     val errorLine = fileContent[errorLineNumber - 1]
36     val errorLinePointer = " ^".padStart(errorLine.indexOfFirst { it != ' ' } + 1)
37     error(
38         "Error in ${location.filePath}:${location.lineNumber}: " +
39             "${exception.message}\n${errorLine}\n$errorLinePointer\n",
40         exception.symbol,
41     )
42 }
43