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Truffle is a multi-language framework for executing dynamic languages
that achieves high performance when combined with Graal.
/*
* Copyright (c) 2018, 2021, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* The Universal Permissive License (UPL), Version 1.0
*
* Subject to the condition set forth below, permission is hereby granted to any
* person obtaining a copy of this software, associated documentation and/or
* data (collectively the "Software"), free of charge and under any and all
* copyright rights in the Software, and any and all patent rights owned or
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* unmodified Software as contributed to or provided by such licensor, or (ii)
* the Larger Works (as defined below), to deal in both
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* (a) the Software, and
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* (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
* one is included with the Software each a "Larger Work" to which the Software
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package com.oracle.truffle.host;
import java.lang.reflect.Type;
import java.util.Arrays;
import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
import com.oracle.truffle.api.interop.UnsupportedTypeException;
final class HostInteropErrors {
private HostInteropErrors() {
}
@TruffleBoundary
static RuntimeException nullCoercion(HostContext context, Object nullValue, Type targetType) {
throw HostEngineException.nullPointer(context.access, String.format("Cannot convert null value %s to Java type '%s'.",
getValueInfo(context, nullValue),
targetType.getTypeName()));
}
@TruffleBoundary
static RuntimeException cannotConvertPrimitive(HostContext context, Object value, Class targetType) {
String reason;
if (HostToTypeNode.isPrimitiveTarget(targetType)) {
reason = "Invalid or lossy primitive coercion.";
} else {
reason = "Unsupported target type.";
}
return HostEngineException.classCast(context.access, String.format("Cannot convert %s to Java type '%s': %s",
getValueInfo(context, value),
targetType.getTypeName(),
reason));
}
@TruffleBoundary
static RuntimeException cannotConvert(HostContext context, Object value, Type targetType, String reason) {
return HostEngineException.classCast(context.access, String.format("Cannot convert %s to Java type '%s': %s",
getValueInfo(context, value),
targetType.getTypeName(),
reason));
}
@TruffleBoundary
static RuntimeException invalidArrayIndex(HostContext context, Object receiver, Type componentType, int index) {
String message = String.format("Invalid array index %s for %s[] %s.", index, formatComponentType(componentType), getValueInfo(context, receiver));
throw HostEngineException.arrayIndexOutOfBounds(context.access, message);
}
private static Object formatComponentType(Type componentType) {
return (componentType == null || componentType == Object.class) ? "Object" : componentType.getTypeName();
}
@TruffleBoundary
static RuntimeException arrayReadUnsupported(HostContext context, Object receiver, Type componentType) {
String message = String.format("Unsupported array read operation for %s[] %s.", formatComponentType(componentType), getValueInfo(context, receiver));
throw HostEngineException.unsupported(context.access, message);
}
@TruffleBoundary
static RuntimeException invalidExecuteArgumentType(HostContext context, Object receiver, Object[] arguments) {
String[] formattedArgs = formatArgs(context, arguments);
String message = String.format("Invalid argument when executing %s with arguments %s.", getValueInfo(context, receiver), Arrays.asList(formattedArgs));
throw HostEngineException.illegalArgument(context.access, message);
}
@TruffleBoundary
static RuntimeException invalidExecuteArity(HostContext context, Object receiver, Object[] arguments, int minArity, int maxArity, int actual) {
String[] formattedArgs = formatArgs(context, arguments);
String message = String.format("Invalid argument count when executing %s with arguments %s. %s",
getValueInfo(context, receiver), Arrays.asList(formattedArgs), formatExpectedArguments(minArity, maxArity, actual));
throw HostEngineException.illegalArgument(context.access, message);
}
private static String[] formatArgs(HostContext context, Object[] arguments) {
String[] formattedArgs = new String[arguments.length];
for (int i = 0; i < arguments.length; i++) {
formattedArgs[i] = getValueInfo(context, arguments[i]);
}
return formattedArgs;
}
static String getValueInfo(HostContext context, Object value) {
return context.language.access.getValueInfo(context.internalContext, value);
}
@TruffleBoundary
static UnsupportedTypeException unsupportedTypeException(Object[] args, Throwable e) {
return UnsupportedTypeException.create(args, e.getMessage());
}
@TruffleBoundary
static UnsupportedTypeException unsupportedTypeException(Object arg, Throwable e) {
return UnsupportedTypeException.create(new Object[]{arg}, e.getMessage());
}
static String formatExpectedArguments(int expectedMinArity, int expectedMaxArity, int actualArity) {
String actual;
if (actualArity < 0) {
actual = "unknown";
} else {
actual = String.valueOf(actualArity);
}
String expected;
if (expectedMinArity == expectedMaxArity) {
expected = String.valueOf(expectedMinArity);
} else {
if (expectedMaxArity < 0) {
expected = expectedMinArity + "+";
} else {
expected = expectedMinArity + "-" + expectedMaxArity;
}
}
return String.format("Expected %s argument(s) but got %s.", expected, actual);
}
}