protected void consumeSingleTypeImportDeclarationName() {
// SingleTypeImportDeclarationName ::= 'import' Name
/* push an ImportRef build from the last name
stored in the identifier stack. */
ImportReference impt;
int length;
char[][] tokens = new char[length = this.identifierLengthStack[this.identifierLengthPtr--]][];
this.identifierPtr -= length;
long[] positions = new long[length];
System.arraycopy(this.identifierStack, this.identifierPtr + 1, tokens, 0, length);
System.arraycopy(this.identifierPositionStack, this.identifierPtr + 1, positions, 0, length);
pushOnAstStack(
impt = newImportReference(tokens, positions, false, ClassFileConstants.AccDefault));
if (this.currentToken == TokenNameSEMICOLON) {
impt.declarationSourceEnd = this.scanner.currentPosition - 1;
} else {
impt.declarationSourceEnd = impt.sourceEnd;
}
impt.declarationEnd = impt.declarationSourceEnd;
// this.endPosition is just before the ;
impt.declarationSourceStart = this.intStack[this.intPtr--];
// recovery
if (this.currentElement != null) {
this.lastCheckPoint = impt.declarationSourceEnd + 1;
this.currentElement = this.currentElement.add(impt, 0);
this.lastIgnoredToken = -1;
this.restartRecovery = true; // used to avoid branching back into the regular automaton
}
if (this.reportReferenceInfo) {
this.requestor.acceptTypeReference(impt.tokens, impt.sourceStart, impt.sourceEnd);
}
}
public StringBuffer print(int indent, StringBuffer output) {
if (currentPackage != null) {
printIndent(indent, output).append("package "); // $NON-NLS-1$
currentPackage.print(0, output, false).append(";\n"); // $NON-NLS-1$
}
if (imports != null)
for (int i = 0; i < imports.length; i++) {
if (imports[i].isInternal()) continue;
printIndent(indent, output).append("import "); // $NON-NLS-1$
ImportReference currentImport = imports[i];
currentImport.print(0, output).append(";\n"); // $NON-NLS-1$
}
if (types != null) {
for (int i = 0; i < types.length; i++) {
types[i].print(indent, output).append("\n"); // $NON-NLS-1$
}
}
if (statements != null) {
for (int i = 0; i < statements.length; i++) {
statements[i].printStatement(indent, output).append("\n"); // $NON-NLS-1$
}
}
return output;
}
public void checkAndSetImports() { // AspectJ Extension - raised to public
if (this.referenceContext.imports == null) {
this.imports = getDefaultImports();
return;
}
// allocate the import array, add java.lang.* by default
int numberOfStatements = this.referenceContext.imports.length;
int numberOfImports = numberOfStatements + 1;
for (int i = 0; i < numberOfStatements; i++) {
ImportReference importReference = this.referenceContext.imports[i];
if (((importReference.bits & ASTNode.OnDemand) != 0)
&& CharOperation.equals(TypeConstants.JAVA_LANG, importReference.tokens)
&& !importReference.isStatic()) {
numberOfImports--;
break;
}
}
ImportBinding[] resolvedImports = new ImportBinding[numberOfImports];
resolvedImports[0] = getDefaultImports()[0];
int index = 1;
nextImport:
for (int i = 0; i < numberOfStatements; i++) {
ImportReference importReference = this.referenceContext.imports[i];
char[][] compoundName = importReference.tokens;
// skip duplicates or imports of the current package
for (int j = 0; j < index; j++) {
ImportBinding resolved = resolvedImports[j];
if (resolved.onDemand == ((importReference.bits & ASTNode.OnDemand) != 0)
&& resolved.isStatic() == importReference.isStatic())
if (CharOperation.equals(compoundName, resolvedImports[j].compoundName))
continue nextImport;
}
if ((importReference.bits & ASTNode.OnDemand) != 0) {
if (CharOperation.equals(compoundName, this.currentPackageName)) continue nextImport;
Binding importBinding = findImport(compoundName, compoundName.length);
if (!importBinding.isValidBinding()
|| (importReference.isStatic() && importBinding instanceof PackageBinding))
continue nextImport; // we report all problems in faultInImports()
resolvedImports[index++] =
new ImportBinding(compoundName, true, importBinding, importReference);
} else {
// resolve single imports only when the last name matches
resolvedImports[index++] = new ImportBinding(compoundName, false, null, importReference);
}
}
// shrink resolvedImports... only happens if an error was reported
if (resolvedImports.length > index)
System.arraycopy(resolvedImports, 0, resolvedImports = new ImportBinding[index], 0, index);
this.imports = resolvedImports;
}
protected void consumeSingleStaticImportDeclarationName() {
// SingleTypeImportDeclarationName ::= 'import' 'static' Name
ImportReference impt;
int length;
char[][] tokens = new char[length = this.identifierLengthStack[this.identifierLengthPtr--]][];
this.identifierPtr -= length;
long[] positions = new long[length];
System.arraycopy(this.identifierStack, this.identifierPtr + 1, tokens, 0, length);
System.arraycopy(this.identifierPositionStack, this.identifierPtr + 1, positions, 0, length);
pushOnAstStack(
impt = newImportReference(tokens, positions, false, ClassFileConstants.AccStatic));
this.modifiers = ClassFileConstants.AccDefault;
this.modifiersSourceStart = -1; // <-- see comment into modifiersFlag(int)
if (this.currentToken == TokenNameSEMICOLON) {
impt.declarationSourceEnd = this.scanner.currentPosition - 1;
} else {
impt.declarationSourceEnd = impt.sourceEnd;
}
impt.declarationEnd = impt.declarationSourceEnd;
// this.endPosition is just before the ;
impt.declarationSourceStart = this.intStack[this.intPtr--];
if (!this.statementRecoveryActivated
&& this.options.sourceLevel < ClassFileConstants.JDK1_5
&& this.lastErrorEndPositionBeforeRecovery < this.scanner.currentPosition) {
impt.modifiers =
ClassFileConstants
.AccDefault; // convert the static import reference to a non-static importe reference
problemReporter().invalidUsageOfStaticImports(impt);
}
// recovery
if (this.currentElement != null) {
this.lastCheckPoint = impt.declarationSourceEnd + 1;
this.currentElement = this.currentElement.add(impt, 0);
this.lastIgnoredToken = -1;
this.restartRecovery = true; // used to avoid branching back into the regular automaton
}
if (this.reportReferenceInfo) {
// Name for static import is TypeName '.' Identifier
// => accept unknown ref on identifier
int tokensLength = impt.tokens.length - 1;
int start = (int) (impt.sourcePositions[tokensLength] >>> 32);
char[] last = impt.tokens[tokensLength];
// accept all possible kind for last name, index users will have to select the right one...
// see bug https://bugs.eclipse.org/bugs/show_bug.cgi?id=86901
this.requestor.acceptFieldReference(last, start);
this.requestor.acceptMethodReference(last, 0, start);
this.requestor.acceptTypeReference(last, start);
// accept type name
if (tokensLength > 0) {
char[][] compoundName = new char[tokensLength][];
System.arraycopy(impt.tokens, 0, compoundName, 0, tokensLength);
int end = (int) impt.sourcePositions[tokensLength - 1];
this.requestor.acceptTypeReference(compoundName, impt.sourceStart, end);
}
}
}
public StringBuffer print(int indent, StringBuffer output) {
if (this.currentPackage != null) {
printIndent(indent, output).append("package "); // $NON-NLS-1$
this.currentPackage.print(0, output, false).append(";\n"); // $NON-NLS-1$
}
if (this.imports != null)
for (int i = 0; i < this.imports.length; i++) {
printIndent(indent, output).append("import "); // $NON-NLS-1$
ImportReference currentImport = this.imports[i];
if (currentImport.isStatic()) {
output.append("static "); // $NON-NLS-1$
}
currentImport.print(0, output).append(";\n"); // $NON-NLS-1$
}
if (this.types != null) {
for (int i = 0; i < this.types.length; i++) {
this.types[i].print(indent, output).append("\n"); // $NON-NLS-1$
}
}
return output;
}
protected void consumeStaticImportOnDemandDeclarationName() {
// TypeImportOnDemandDeclarationName ::= 'import' 'static' Name '.' '*'
/* push an ImportRef build from the last name
stored in the identifier stack. */
ImportReference impt;
int length;
char[][] tokens = new char[length = this.identifierLengthStack[this.identifierLengthPtr--]][];
this.identifierPtr -= length;
long[] positions = new long[length];
System.arraycopy(this.identifierStack, this.identifierPtr + 1, tokens, 0, length);
System.arraycopy(this.identifierPositionStack, this.identifierPtr + 1, positions, 0, length);
pushOnAstStack(
impt = new ImportReference(tokens, positions, true, ClassFileConstants.AccStatic));
// star end position
impt.trailingStarPosition = this.intStack[this.intPtr--];
this.modifiers = ClassFileConstants.AccDefault;
this.modifiersSourceStart = -1; // <-- see comment into modifiersFlag(int)
if (this.currentToken == TokenNameSEMICOLON) {
impt.declarationSourceEnd = this.scanner.currentPosition - 1;
} else {
impt.declarationSourceEnd = impt.sourceEnd;
}
impt.declarationEnd = impt.declarationSourceEnd;
// this.endPosition is just before the ;
impt.declarationSourceStart = this.intStack[this.intPtr--];
if (!this.statementRecoveryActivated
&& this.options.sourceLevel < ClassFileConstants.JDK1_5
&& this.lastErrorEndPositionBeforeRecovery < this.scanner.currentPosition) {
impt.modifiers =
ClassFileConstants
.AccDefault; // convert the static import reference to a non-static importe reference
problemReporter().invalidUsageOfStaticImports(impt);
}
// recovery
if (this.currentElement != null) {
this.lastCheckPoint = impt.declarationSourceEnd + 1;
this.currentElement = this.currentElement.add(impt, 0);
this.lastIgnoredToken = -1;
this.restartRecovery = true; // used to avoid branching back into the regular automaton
}
if (this.reportReferenceInfo) {
this.requestor.acceptTypeReference(impt.tokens, impt.sourceStart, impt.sourceEnd);
}
}
/**
* Checks for duplicates. If all ok, records the importBinding returns -1 when this import is
* flagged as duplicate.
*
* @param importBinding
* @param typesBySimpleNames
* @param importReference
* @param compoundName
* @return -1 when this import is flagged as duplicate, importPtr otherwise.
*/
private int checkAndRecordImportBinding(
Binding importBinding,
HashtableOfType typesBySimpleNames,
ImportReference importReference,
char[][] compoundName) {
ReferenceBinding conflictingType = null;
if (importBinding instanceof MethodBinding) {
conflictingType = (ReferenceBinding) getType(compoundName, compoundName.length);
if (!conflictingType.isValidBinding()
|| (importReference.isStatic() && !conflictingType.isStatic())) conflictingType = null;
}
// collisions between an imported static field & a type should be checked according to spec...
// but currently not by javac
final char[] name = compoundName[compoundName.length - 1];
if (importBinding instanceof ReferenceBinding || conflictingType != null) {
ReferenceBinding referenceBinding =
conflictingType == null ? (ReferenceBinding) importBinding : conflictingType;
ReferenceBinding typeToCheck =
referenceBinding.problemId() == ProblemReasons.Ambiguous
? ((ProblemReferenceBinding) referenceBinding).closestMatch
: referenceBinding;
if (importReference.isTypeUseDeprecated(typeToCheck, this))
problemReporter().deprecatedType(typeToCheck, importReference);
ReferenceBinding existingType = typesBySimpleNames.get(name);
if (existingType != null) {
// duplicate test above should have caught this case, but make sure
if (TypeBinding.equalsEquals(existingType, referenceBinding)) {
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=302865
// Check all resolved imports to see if this import qualifies as a duplicate
for (int j = 0; j < this.importPtr; j++) {
ImportBinding resolved = this.tempImports[j];
if (resolved instanceof ImportConflictBinding) {
ImportConflictBinding importConflictBinding = (ImportConflictBinding) resolved;
if (TypeBinding.equalsEquals(
importConflictBinding.conflictingTypeBinding, referenceBinding)) {
if (!importReference.isStatic()) {
// resolved is implicitly static
problemReporter().duplicateImport(importReference);
recordImportBinding(
new ImportBinding(compoundName, false, importBinding, importReference));
}
}
} else if (resolved.resolvedImport == referenceBinding) {
if (importReference.isStatic() != resolved.isStatic()) {
problemReporter().duplicateImport(importReference);
recordImportBinding(
new ImportBinding(compoundName, false, importBinding, importReference));
}
}
}
return -1;
}
// either the type collides with a top level type or another imported type
for (int j = 0, length = this.topLevelTypes.length; j < length; j++) {
if (CharOperation.equals(this.topLevelTypes[j].sourceName, existingType.sourceName)) {
problemReporter().conflictingImport(importReference);
return -1;
}
}
if (importReference.isStatic()
&& importBinding instanceof ReferenceBinding
&& compilerOptions().sourceLevel >= ClassFileConstants.JDK1_8) {
// 7.5.3 says nothing about collision of single static imports and JDK8 tolerates them,
// though use is flagged.
for (int j = 0; j < this.importPtr; j++) {
ImportBinding resolved = this.tempImports[j];
if (resolved.isStatic()
&& resolved.resolvedImport instanceof ReferenceBinding
&& importBinding != resolved.resolvedImport) {
if (CharOperation.equals(
name, resolved.compoundName[resolved.compoundName.length - 1])) {
ReferenceBinding type = (ReferenceBinding) resolved.resolvedImport;
resolved.resolvedImport =
new ProblemReferenceBinding(
new char[][] {name}, type, ProblemReasons.Ambiguous);
return -1;
}
}
}
}
problemReporter().duplicateImport(importReference);
return -1;
}
typesBySimpleNames.put(name, referenceBinding);
} else if (importBinding instanceof FieldBinding) {
for (int j = 0; j < this.importPtr; j++) {
ImportBinding resolved = this.tempImports[j];
// find other static fields with the same name
if (resolved.isStatic()
&& resolved.resolvedImport instanceof FieldBinding
&& importBinding != resolved.resolvedImport) {
if (CharOperation.equals(name, resolved.compoundName[resolved.compoundName.length - 1])) {
if (compilerOptions().sourceLevel >= ClassFileConstants.JDK1_8) {
// 7.5.3 says nothing about collision of single static imports and JDK8 tolerates
// them, though use is flagged.
FieldBinding field = (FieldBinding) resolved.resolvedImport;
resolved.resolvedImport =
new ProblemFieldBinding(
field, field.declaringClass, name, ProblemReasons.Ambiguous);
return -1;
} else {
problemReporter().duplicateImport(importReference);
return -1;
}
}
}
}
}
if (conflictingType == null) {
recordImportBinding(new ImportBinding(compoundName, false, importBinding, importReference));
} else {
recordImportBinding(
new ImportConflictBinding(compoundName, importBinding, conflictingType, importReference));
}
return this.importPtr;
}
void faultInImports() {
boolean unresolvedFound = false;
// should report unresolved only if we are not suppressing caching of failed resolutions
boolean reportUnresolved = !this.suppressImportErrors;
if (this.typeOrPackageCache != null && !this.skipCachingImports)
return; // can be called when a field constant is resolved before static imports
if (this.referenceContext.imports == null) {
this.typeOrPackageCache = new HashtableOfObject(1);
return;
}
// collect the top level type names if a single type import exists
int numberOfStatements = this.referenceContext.imports.length;
HashtableOfType typesBySimpleNames = null;
for (int i = 0; i < numberOfStatements; i++) {
if ((this.referenceContext.imports[i].bits & ASTNode.OnDemand) == 0) {
typesBySimpleNames = new HashtableOfType(this.topLevelTypes.length + numberOfStatements);
for (int j = 0, length = this.topLevelTypes.length; j < length; j++)
typesBySimpleNames.put(this.topLevelTypes[j].sourceName, this.topLevelTypes[j]);
break;
}
}
// allocate the import array, add java.lang.* by default
int numberOfImports = numberOfStatements + 1;
for (int i = 0; i < numberOfStatements; i++) {
ImportReference importReference = this.referenceContext.imports[i];
if (((importReference.bits & ASTNode.OnDemand) != 0)
&& CharOperation.equals(TypeConstants.JAVA_LANG, importReference.tokens)
&& !importReference.isStatic()) {
numberOfImports--;
break;
}
}
this.tempImports = new ImportBinding[numberOfImports];
this.tempImports[0] = getDefaultImports()[0];
this.importPtr = 1;
// keep static imports with normal imports until there is a reason to split them up
// on demand imports continue to be packages & types. need to check on demand type imports for
// fields/methods
// single imports change from being just types to types or fields
nextImport:
for (int i = 0; i < numberOfStatements; i++) {
ImportReference importReference = this.referenceContext.imports[i];
char[][] compoundName = importReference.tokens;
// skip duplicates or imports of the current package
for (int j = 0; j < this.importPtr; j++) {
ImportBinding resolved = this.tempImports[j];
if (resolved.onDemand == ((importReference.bits & ASTNode.OnDemand) != 0)
&& resolved.isStatic() == importReference.isStatic()) {
if (CharOperation.equals(compoundName, resolved.compoundName)) {
problemReporter().unusedImport(importReference); // since skipped, must be reported now
continue nextImport;
}
}
}
if ((importReference.bits & ASTNode.OnDemand) != 0) {
if (CharOperation.equals(compoundName, this.currentPackageName)) {
problemReporter().unusedImport(importReference); // since skipped, must be reported now
continue nextImport;
}
Binding importBinding = findImport(compoundName, compoundName.length);
if (!importBinding.isValidBinding()) {
problemReporter().importProblem(importReference, importBinding);
continue nextImport;
}
if (importReference.isStatic() && importBinding instanceof PackageBinding) {
problemReporter().cannotImportPackage(importReference);
continue nextImport;
}
recordImportBinding(new ImportBinding(compoundName, true, importBinding, importReference));
} else {
Binding importBinding =
findSingleImport(
compoundName,
Binding.TYPE | Binding.FIELD | Binding.METHOD,
importReference.isStatic());
if (!importBinding.isValidBinding()) {
if (importBinding.problemId() == ProblemReasons.Ambiguous) {
// keep it unless a duplicate can be found below
} else {
unresolvedFound = true;
if (reportUnresolved) {
problemReporter().importProblem(importReference, importBinding);
}
continue nextImport;
}
}
if (importBinding instanceof PackageBinding) {
problemReporter().cannotImportPackage(importReference);
continue nextImport;
}
// all the code here which checks for valid bindings have been moved to the method
// checkAndRecordImportBinding() since bug 361327
if (checkAndRecordImportBinding(
importBinding, typesBySimpleNames, importReference, compoundName)
== -1) continue nextImport;
if (importReference.isStatic()) {
// look for more static bindings being imported by single static import(bug 361327).
// findSingleImport() finds fields first, followed by method and then type
// So if a type is found, no fields and methods are available anyway
// similarly when method is found, type may be available but no field available for sure
if (importBinding.kind() == Binding.FIELD) {
checkMoreStaticBindings(
compoundName, typesBySimpleNames, Binding.TYPE | Binding.METHOD, importReference);
} else if (importBinding.kind() == Binding.METHOD) {
checkMoreStaticBindings(
compoundName, typesBySimpleNames, Binding.TYPE, importReference);
}
}
}
}
// shrink resolvedImports... only happens if an error was reported
if (this.tempImports.length > this.importPtr)
System.arraycopy(
this.tempImports,
0,
this.tempImports = new ImportBinding[this.importPtr],
0,
this.importPtr);
this.imports = this.tempImports;
int length = this.imports.length;
this.typeOrPackageCache = new HashtableOfObject(length);
for (int i = 0; i < length; i++) {
ImportBinding binding = this.imports[i];
if (!binding.onDemand && binding.resolvedImport instanceof ReferenceBinding
|| binding instanceof ImportConflictBinding)
this.typeOrPackageCache.put(binding.compoundName[binding.compoundName.length - 1], binding);
}
this.skipCachingImports = this.suppressImportErrors && unresolvedFound;
}
