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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,77 @@ | ||
| /* | ||
| * Copyright 2010-2024 JetBrains s.r.o. and Kotlin Programming Language contributors. | ||
| * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file. | ||
| */ | ||
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| package org.jetbrains.kotlin.formver | ||
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| import org.jetbrains.kotlin.fir.FirElement | ||
| import org.jetbrains.kotlin.fir.declarations.FirSimpleFunction | ||
| import org.jetbrains.kotlin.fir.expressions.FirBlock | ||
| import org.jetbrains.kotlin.fir.expressions.FirFunctionCall | ||
| import org.jetbrains.kotlin.fir.expressions.arguments | ||
| import org.jetbrains.kotlin.fir.expressions.toResolvedCallableSymbol | ||
| import org.jetbrains.kotlin.fir.symbols.SymbolInternals | ||
| import org.jetbrains.kotlin.fir.symbols.impl.FirFunctionSymbol | ||
| import org.jetbrains.kotlin.fir.visitors.FirVisitor | ||
| import org.jetbrains.kotlin.text | ||
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| /** | ||
| * The UniqueCheckVisitor class is responsible for visiting expression and return its unique level | ||
| * | ||
| * @see FirVisitor | ||
| * @see UniqueLevel | ||
| * | ||
| * @property uniqueLevel The uniqueness level to be of the expression | ||
| * @property uniqueCheckerContext The context object that contains information about the uniqueness annotations and resolution. | ||
| */ | ||
| object UniqueCheckVisitor : FirVisitor<UniqueLevel, UniqueCheckerContext>() { | ||
| override fun visitElement(element: FirElement, data: UniqueCheckerContext): UniqueLevel = UniqueLevel.Shared | ||
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| override fun visitSimpleFunction(simpleFunction: FirSimpleFunction, data: UniqueCheckerContext): UniqueLevel { | ||
| simpleFunction.body?.accept(this, data) | ||
| // Function definition don't have to return a unique level | ||
| return UniqueLevel.Shared | ||
| } | ||
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| override fun visitBlock(block: FirBlock, data: UniqueCheckerContext): UniqueLevel { | ||
| block.statements.forEach { statement -> | ||
| when (statement) { | ||
| is FirFunctionCall -> { | ||
| statement.accept(this, data) | ||
| } | ||
| } | ||
| } | ||
| return UniqueLevel.Shared | ||
| } | ||
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| @OptIn(SymbolInternals::class) | ||
| override fun visitFunctionCall(functionCall: FirFunctionCall, data: UniqueCheckerContext): UniqueLevel { | ||
| // To keep is simple, assume a functionCall always return Shared for now | ||
| val symbol = functionCall.toResolvedCallableSymbol() | ||
| val params = (symbol as FirFunctionSymbol<*>).fir.valueParameters | ||
| val requiredUniqueLevels = params.map { data.resolveUniqueAnnotation(it) } | ||
| // Skip merge of context for now | ||
| val arguments = functionCall.arguments | ||
| arguments.forEachIndexed { index, argument -> | ||
| val requiredUnique = requiredUniqueLevels[index] | ||
| if (requiredUnique == UniqueLevel.Unique && visitExpression(argument, data) == UniqueLevel.Shared) { | ||
| throw IllegalArgumentException("uniqueness level not match ${argument.source.text}") | ||
| } | ||
| } | ||
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| val callee = functionCall.toResolvedCallableSymbol()?.fir as FirSimpleFunction | ||
| return data.resolveUniqueAnnotation(callee) | ||
| } | ||
| } | ||
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| object UniquenessCheckExceptionWrapper : FirVisitor<UniqueLevel, UniqueCheckerContext>() { | ||
| override fun visitElement(element: FirElement, data: UniqueCheckerContext): UniqueLevel { | ||
| try { | ||
| return element.accept(UniqueCheckVisitor, data) | ||
| } catch (e: Exception) { | ||
| data.errorCollector.addErrorInfo("... while checking uniqueness level for ${element.source.text}") | ||
| throw e | ||
| } | ||
| } | ||
| } |
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