com.oracle.graal.python.runtime.interop.PythonMapScope Maven / Gradle / Ivy
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package com.oracle.graal.python.runtime.interop;
import com.oracle.graal.python.PythonLanguage;
import com.oracle.graal.python.nodes.BuiltinNames;
import com.oracle.graal.python.runtime.PythonContext;
import com.oracle.truffle.api.CompilerDirectives.CompilationFinal;
import com.oracle.truffle.api.TruffleLanguage;
import com.oracle.truffle.api.dsl.Bind;
import com.oracle.truffle.api.dsl.Cached;
import com.oracle.truffle.api.dsl.Cached.Shared;
import com.oracle.truffle.api.interop.InteropLibrary;
import com.oracle.truffle.api.interop.TruffleObject;
import com.oracle.truffle.api.interop.UnknownIdentifierException;
import com.oracle.truffle.api.interop.UnsupportedMessageException;
import com.oracle.truffle.api.interop.UnsupportedTypeException;
import com.oracle.truffle.api.library.CachedLibrary;
import com.oracle.truffle.api.library.ExportLibrary;
import com.oracle.truffle.api.library.ExportMessage;
import com.oracle.truffle.api.nodes.Node;
import com.oracle.truffle.api.profiles.InlinedIntValueProfile;
/**
* represents global and builtins scopes, which variables values are stored in dict-like objects.
*/
@ExportLibrary(InteropLibrary.class)
public final class PythonMapScope implements TruffleObject {
@CompilationFinal(dimensions = 1) private static final String[] TOP_SCOPE_NAMES = {
BuiltinNames.J___MAIN__,
BuiltinNames.J_BUILTINS,
};
static final int LIMIT = 2;
private final String[] names;
private final Object[] objects;
private final int scopeIndex;
public PythonMapScope(Object[] objects, String[] names) {
this(objects, 0, names);
}
private PythonMapScope(Object[] objects, int index, String[] names) {
assert objects.length == names.length;
this.names = names;
this.objects = objects;
this.scopeIndex = index;
}
public static PythonMapScope createTopScope(PythonContext context) {
Object[] objects = new Object[]{
context.getMainModule(),
InteropMap.fromPythonObject(context.getBuiltins())
};
return new PythonMapScope(objects, 0, TOP_SCOPE_NAMES);
}
@ExportMessage
boolean hasScopeParent() {
return scopeIndex < (names.length - 1);
}
@ExportMessage
Object getScopeParent() throws UnsupportedMessageException {
if (scopeIndex < (names.length - 1)) {
return new PythonMapScope(objects, scopeIndex + 1, names);
} else {
throw UnsupportedMessageException.create();
}
}
@ExportMessage
@SuppressWarnings("static-method")
boolean hasMembers() {
return true;
}
@ExportMessage
Object getMembers(@SuppressWarnings("unused") boolean includeInternal,
@Bind("$node") Node inliningTarget,
@Shared("interop") @CachedLibrary(limit = "LIMIT") InteropLibrary interop,
@Shared("lenghtProfile") @Cached InlinedIntValueProfile lengthProfile)
throws UnsupportedMessageException {
int length = lengthProfile.profile(inliningTarget, names.length);
Object[] keys = new Object[length - scopeIndex];
for (int i = scopeIndex; i < length; i++) {
keys[i - scopeIndex] = interop.getMembers(objects[i]);
}
return new MergedPropertyNames(keys);
}
@ExportMessage
boolean isMemberReadable(String member,
@Bind("$node") Node inliningTarget,
@Shared("interop") @CachedLibrary(limit = "LIMIT") InteropLibrary interop,
@Shared("lenghtProfile") @Cached InlinedIntValueProfile lengthProfile) {
int length = lengthProfile.profile(inliningTarget, names.length);
for (int i = scopeIndex; i < length; i++) {
if (interop.isMemberReadable(objects[i], member)) {
return true;
} else if (interop.isMemberExisting(objects[i], member)) {
break;
}
}
return false;
}
@ExportMessage
Object readMember(String member,
@Bind("$node") Node inliningTarget,
@Shared("interop") @CachedLibrary(limit = "LIMIT") InteropLibrary interop,
@Shared("lenghtProfile") @Cached InlinedIntValueProfile lengthProfile)
throws UnknownIdentifierException, UnsupportedMessageException {
int length = lengthProfile.profile(inliningTarget, names.length);
for (int i = scopeIndex; i < length; i++) {
Object scope = this.objects[i];
if (interop.isMemberExisting(scope, member)) {
return interop.readMember(scope, member);
}
}
throw UnknownIdentifierException.create(member);
}
@ExportMessage
boolean isMemberModifiable(String member,
@Bind("$node") Node inliningTarget,
@Shared("interop") @CachedLibrary(limit = "LIMIT") InteropLibrary interop,
@Shared("lenghtProfile") @Cached InlinedIntValueProfile lengthProfile) {
int length = lengthProfile.profile(inliningTarget, names.length);
for (int i = scopeIndex; i < length; i++) {
Object scope = this.objects[i];
if (interop.isMemberModifiable(scope, member)) {
return true;
} else if (interop.isMemberExisting(scope, member)) {
break;
}
}
return false;
}
@ExportMessage
boolean isMemberInsertable(String member,
@Bind("$node") Node inliningTarget,
@Shared("interop") @CachedLibrary(limit = "LIMIT") InteropLibrary interop,
@Shared("lenghtProfile") @Cached InlinedIntValueProfile lengthProfile) {
int length = lengthProfile.profile(inliningTarget, names.length);
for (int i = scopeIndex; i < length; i++) {
Object scope = this.objects[i];
if (interop.isMemberInsertable(scope, member)) {
return true;
} else if (interop.isMemberExisting(scope, member)) {
return false; // saw existing member which would shadow the new member
}
}
return false;
}
@ExportMessage
boolean hasMemberReadSideEffects(String member,
@Bind("$node") Node inliningTarget,
@Shared("interop") @CachedLibrary(limit = "LIMIT") InteropLibrary interop,
@Shared("lenghtProfile") @Cached InlinedIntValueProfile lengthProfile) {
int length = lengthProfile.profile(inliningTarget, names.length);
for (int i = scopeIndex; i < length; i++) {
Object scope = this.objects[i];
if (interop.isMemberReadable(scope, member)) {
return interop.hasMemberReadSideEffects(scope, member);
}
}
return false;
}
@ExportMessage
boolean hasMemberWriteSideEffects(String member,
@Bind("$node") Node inliningTarget,
@Shared("interop") @CachedLibrary(limit = "LIMIT") InteropLibrary interop,
@Shared("lenghtProfile") @Cached InlinedIntValueProfile lengthProfile) {
int length = lengthProfile.profile(inliningTarget, names.length);
for (int i = scopeIndex; i < length; i++) {
Object scope = this.objects[i];
if (interop.isMemberWritable(scope, member)) {
return interop.hasMemberWriteSideEffects(scope, member);
}
}
return false;
}
@ExportMessage
void writeMember(String member, Object value,
@Bind("$node") Node inliningTarget,
@Shared("interop") @CachedLibrary(limit = "LIMIT") InteropLibrary interop,
@Shared("lenghtProfile") @Cached InlinedIntValueProfile lengthProfile)
throws UnknownIdentifierException, UnsupportedMessageException, UnsupportedTypeException {
int length = lengthProfile.profile(inliningTarget, names.length);
for (int i = scopeIndex; i < length; i++) {
Object scope = this.objects[i];
if (interop.isMemberModifiable(scope, member) || interop.isMemberInsertable(scope, member)) {
interop.writeMember(scope, member, value);
return;
} else if (interop.isMemberExisting(scope, member)) {
// saw existing member which would shadow the new member
throw UnsupportedMessageException.create();
}
}
throw UnsupportedMessageException.create();
}
@ExportMessage
boolean isMemberRemovable(String member,
@Bind("$node") Node inliningTarget,
@Shared("interop") @CachedLibrary(limit = "LIMIT") InteropLibrary interop,
@Shared("lenghtProfile") @Cached InlinedIntValueProfile lengthProfile) {
int length = lengthProfile.profile(inliningTarget, names.length);
for (int i = scopeIndex; i < length; i++) {
Object scope = this.objects[i];
if (interop.isMemberRemovable(scope, member)) {
return true;
} else if (interop.isMemberExisting(scope, member)) {
return false;
}
}
return false;
}
@ExportMessage
void removeMember(String member,
@Bind("$node") Node inliningTarget,
@Shared("interop") @CachedLibrary(limit = "LIMIT") InteropLibrary interop,
@Shared("lenghtProfile") @Cached InlinedIntValueProfile lengthProfile)
throws UnsupportedMessageException, UnknownIdentifierException {
int length = lengthProfile.profile(inliningTarget, names.length);
for (int i = scopeIndex; i < length; i++) {
Object scope = this.objects[i];
if (interop.isMemberRemovable(scope, member)) {
interop.removeMember(scope, member);
return;
} else if (interop.isMemberExisting(scope, member)) {
break;
}
}
throw UnsupportedMessageException.create();
}
@ExportMessage
@SuppressWarnings("static-method")
boolean hasLanguage() {
return true;
}
@ExportMessage
@SuppressWarnings("static-method")
Class> getLanguage() {
return PythonLanguage.class;
}
@ExportMessage
@SuppressWarnings("static-method")
boolean isScope() {
return true;
}
@ExportMessage
Object toDisplayString(@SuppressWarnings("unused") boolean allowSideEffects) {
return names[scopeIndex];
}
}
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