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/*
* Copyright (C) 2019 The Android Open Source Project
*
* 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
*
* http://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 com.android.protologtool
import com.github.javaparser.StaticJavaParser
import com.github.javaparser.ast.CompilationUnit
import com.github.javaparser.ast.ImportDeclaration
import com.github.javaparser.ast.NodeList
import com.github.javaparser.ast.expr.BinaryExpr
import com.github.javaparser.ast.expr.Expression
import com.github.javaparser.ast.expr.MethodCallExpr
import com.github.javaparser.ast.expr.SimpleName
import com.github.javaparser.ast.expr.StringLiteralExpr
import com.github.javaparser.ast.expr.TypeExpr
import com.github.javaparser.ast.type.PrimitiveType
import com.github.javaparser.ast.type.Type
object CodeUtils {
/**
* Returns a stable hash of a string.
* We reimplement String::hashCode() for readability reasons.
*/
fun hash(str: String, level: LogLevel): Int {
return (level.name + str).map { c -> c.toInt() }.reduce { h, c -> h * 31 + c }
}
fun isWildcardStaticImported(code: CompilationUnit, className: String): Boolean {
return code.findAll(ImportDeclaration::class.java)
.any { im -> im.isStatic && im.isAsterisk && im.name.toString() == className }
}
fun isClassImportedOrSamePackage(code: CompilationUnit, className: String): Boolean {
val packageName = className.substringBeforeLast('.')
return code.packageDeclaration.isPresent &&
code.packageDeclaration.get().nameAsString == packageName ||
code.findAll(ImportDeclaration::class.java)
.any { im ->
!im.isStatic &&
((!im.isAsterisk && im.name.toString() == className) ||
(im.isAsterisk && im.name.toString() == packageName))
}
}
fun staticallyImportedMethods(code: CompilationUnit, className: String): Set<String> {
return code.findAll(ImportDeclaration::class.java)
.filter { im ->
im.isStatic &&
im.name.toString().substringBeforeLast('.') == className
}
.map { im -> im.name.toString().substringAfterLast('.') }.toSet()
}
fun concatMultilineString(expr: Expression): String {
return when (expr) {
is StringLiteralExpr -> expr.asString()
is BinaryExpr -> when {
expr.operator == BinaryExpr.Operator.PLUS ->
concatMultilineString(expr.left) + concatMultilineString(expr.right)
else -> throw InvalidProtoLogCallException(
"messageString must be a string literal " +
"or concatenation of string literals.", expr)
}
else -> throw InvalidProtoLogCallException("messageString must be a string literal " +
"or concatenation of string literals.", expr)
}
}
enum class LogDataTypes(
val type: Type,
val toType: (Expression) -> Expression = { expr -> expr }
) {
// When adding new LogDataType make sure to update {@code logDataTypesToBitMask} accordingly
STRING(StaticJavaParser.parseClassOrInterfaceType("String"),
{ expr ->
MethodCallExpr(TypeExpr(StaticJavaParser.parseClassOrInterfaceType("String")),
SimpleName("valueOf"), NodeList(expr))
}),
LONG(PrimitiveType.longType()),
DOUBLE(PrimitiveType.doubleType()),
BOOLEAN(PrimitiveType.booleanType());
}
fun parseFormatString(messageString: String): List<LogDataTypes> {
val types = mutableListOf<LogDataTypes>()
var i = 0
while (i < messageString.length) {
if (messageString[i] == '%') {
if (i + 1 >= messageString.length) {
throw InvalidFormatStringException("Invalid format string in config")
}
when (messageString[i + 1]) {
'b' -> types.add(CodeUtils.LogDataTypes.BOOLEAN)
'd', 'o', 'x' -> types.add(CodeUtils.LogDataTypes.LONG)
'f', 'e', 'g' -> types.add(CodeUtils.LogDataTypes.DOUBLE)
's' -> types.add(CodeUtils.LogDataTypes.STRING)
'%' -> {
}
else -> throw InvalidFormatStringException("Invalid format string field" +
" %${messageString[i + 1]}")
}
i += 2
} else {
i += 1
}
}
return types
}
fun logDataTypesToBitMask(types: List<LogDataTypes>): Int {
if (types.size > 16) {
throw InvalidFormatStringException("Too many log call parameters " +
"- max 16 parameters supported")
}
var mask = 0
types.forEachIndexed { idx, type ->
val x = LogDataTypes.values().indexOf(type)
mask = mask or (x shl (idx * 2))
}
return mask
}
}
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