com.oracle.graal.python.runtime.interop.PythonScopes 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.builtins.objects.dict.PDict;
import com.oracle.graal.python.builtins.objects.function.PArguments;
import com.oracle.graal.python.builtins.objects.object.PythonObject;
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.Exclusive;
import com.oracle.truffle.api.dsl.Cached.Shared;
import com.oracle.truffle.api.frame.Frame;
import com.oracle.truffle.api.frame.MaterializedFrame;
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.nodes.RootNode;
import com.oracle.truffle.api.profiles.InlinedIntValueProfile;
import com.oracle.truffle.api.source.SourceSection;
@ExportLibrary(InteropLibrary.class)
public final class PythonScopes implements TruffleObject {
static final int LIMIT = 2;
public final Object[] scopes;
private final int scopeIndex;
public PythonScopes(Object[] scopes, int scopeIndex) {
this.scopes = scopes;
this.scopeIndex = scopeIndex;
}
private static InteropMap scopeFromObject(PythonObject globals) {
if (globals instanceof PDict) {
return InteropMap.fromPDict((PDict) globals);
} else {
return InteropMap.fromPythonObject(globals);
}
}
public static Object create(Node node, Frame frame) {
RootNode root = node.getRootNode();
PythonLocalScope localScope = PythonLocalScope.createLocalScope(root, frame != null ? frame.materialize() : null);
Object[] scopes;
if (frame != null) {
PythonObject globals = PArguments.getGlobalsSafe(frame);
MaterializedFrame generatorFrame = PArguments.getGeneratorFrameSafe(frame);
Object globalsScope = null;
if (globals != null) {
globalsScope = new PythonMapScope(new Object[]{scopeFromObject(globals)}, new String[]{"globals()"});
}
if (globals != null && generatorFrame != null) {
scopes = new Object[]{localScope, globalsScope, PythonLocalScope.createLocalScope(root, generatorFrame)};
} else if (globals != null) {
scopes = new Object[]{localScope, globalsScope};
} else if (generatorFrame != null) {
scopes = new Object[]{localScope, PythonLocalScope.createLocalScope(root, generatorFrame)};
} else {
return localScope;
}
} else {
return localScope;
}
return new PythonScopes(scopes, 0);
}
@ExportMessage
@SuppressWarnings("static-method")
boolean isScope() {
return true;
}
@ExportMessage
boolean hasScopeParent() {
return scopeIndex < (scopes.length - 1);
}
@ExportMessage
Object getScopeParent() throws UnsupportedMessageException {
if (scopeIndex < (scopes.length - 1)) {
return new PythonScopes(scopes, scopeIndex + 1);
} else {
throw UnsupportedMessageException.create();
}
}
@ExportMessage
public boolean hasSourceLocation(
@Shared("sourceInterop") @CachedLibrary(limit = "1") InteropLibrary lib) {
return lib.hasSourceLocation(scopes[scopeIndex]);
}
@ExportMessage
public SourceSection getSourceLocation(
@Shared("sourceInterop") @CachedLibrary(limit = "1") InteropLibrary lib) throws UnsupportedMessageException {
return lib.getSourceLocation(scopes[scopeIndex]);
}
@ExportMessage
@SuppressWarnings("static-method")
boolean hasLanguage() {
return true;
}
@ExportMessage
@SuppressWarnings("static-method")
Class> getLanguage() {
return PythonLanguage.class;
}
@ExportMessage
boolean hasMembers(@Bind("$node") Node inliningTarget,
@Shared("interop") @CachedLibrary(limit = "LIMIT") InteropLibrary interop,
@Shared("lenghtProfile") @Cached InlinedIntValueProfile lengthProfile) {
int length = lengthProfile.profile(inliningTarget, scopes.length);
for (int i = scopeIndex; i < length; i++) {
Object vars = this.scopes[i];
if (interop.hasMembers(vars)) {
return true;
}
}
return false;
}
@ExportMessage
Object getMembers(@SuppressWarnings("unused") boolean includeInternal,
@Bind("$node") Node inliningTarget,
@Shared("interop") @CachedLibrary(limit = "LIMIT") InteropLibrary interop,
@Shared("lenghtProfile") @Cached InlinedIntValueProfile lengthProfile) throws UnsupportedMessageException {
int length = lengthProfile.profile(inliningTarget, scopes.length);
Object[] keys = new Object[length - scopeIndex];
for (int i = scopeIndex; i < length; i++) {
keys[i - scopeIndex] = interop.getMembers(scopes[i]);
}
return new MergedPropertyNames(keys);
}
@ExportMessage
boolean isMemberReadable(String member,
@Bind("$node") Node inliningTarget,
@Shared("interop") @CachedLibrary(limit = "LIMIT") InteropLibrary interop,
@Shared("lenghtProfile") @Cached InlinedIntValueProfile lengthProfile) {
int length = lengthProfile.profile(inliningTarget, scopes.length);
for (int i = scopeIndex; i < length; i++) {
Object scope = this.scopes[i];
if (interop.isMemberReadable(scope, member)) {
return true;
} else if (interop.isMemberExisting(scope, member)) {
break;
}
}
return false;
}
@ExportMessage
Object readMember(String member,
@Bind("$node") Node inliningTarget,
@Shared("interop") @CachedLibrary(limit = "LIMIT") InteropLibrary interop,
@Shared("lenghtProfile") @Cached InlinedIntValueProfile lengthProfile) throws UnknownIdentifierException, UnsupportedMessageException {
int length = lengthProfile.profile(inliningTarget, scopes.length);
for (int i = scopeIndex; i < length; i++) {
Object scope = this.scopes[i];
if (interop.isMemberExisting(scope, member)) {
return interop.readMember(scope, member);
}
}
throw UnknownIdentifierException.create(member);
}
@ExportMessage
void writeMember(String member, Object value,
@Bind("$node") Node inliningTarget,
@Shared("interop") @CachedLibrary(limit = "LIMIT") InteropLibrary interop,
@Shared("lenghtProfile") @Cached InlinedIntValueProfile lengthProfile)
throws UnknownIdentifierException, UnsupportedMessageException, UnsupportedTypeException {
int length = lengthProfile.profile(inliningTarget, scopes.length);
for (int i = scopeIndex; i < length; i++) {
Object scope = this.scopes[i];
if (interop.isMemberExisting(scope, member)) {
interop.writeMember(scope, member, value);
return;
}
}
throw UnknownIdentifierException.create(member);
}
@ExportMessage
boolean isMemberModifiable(String member,
@Bind("$node") Node inliningTarget,
@Shared("interop") @CachedLibrary(limit = "LIMIT") InteropLibrary interop,
@Shared("lenghtProfile") @Cached InlinedIntValueProfile lengthProfile) {
int length = lengthProfile.profile(inliningTarget, scopes.length);
for (int i = scopeIndex; i < length; i++) {
Object scope = this.scopes[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, scopes.length);
boolean wasInsertable = false;
for (int i = scopeIndex; i < length; i++) {
Object scope = this.scopes[i];
if (interop.isMemberExisting(scope, member)) {
return false;
}
if (interop.isMemberInsertable(scope, member)) {
wasInsertable = true;
}
}
return wasInsertable;
}
@ExportMessage
Object toDisplayString(@SuppressWarnings("unused") boolean allowSideEffects,
@Exclusive @CachedLibrary(limit = "1") InteropLibrary lib) {
return lib.toDisplayString(scopes[scopeIndex]);
}
}
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