public IfStatement generateCompareFloatOrDouble(Expression thisRef, Expression otherRef, char[] floatOrDouble, ASTNode source) { int pS = source.sourceStart, pE = source.sourceEnd; /* if (Float.compare(fieldName, other.fieldName) != 0) return false */ MessageSend floatCompare = new MessageSend(); floatCompare.sourceStart = pS; floatCompare.sourceEnd = pE; setGeneratedBy(floatCompare, source); floatCompare.receiver = generateQualifiedNameRef(source, TypeConstants.JAVA, TypeConstants.LANG, floatOrDouble); floatCompare.selector = "compare".toCharArray(); floatCompare.arguments = new Expression[] {thisRef, otherRef}; IntLiteral int0 = makeIntLiteral("0".toCharArray(), source); EqualExpression ifFloatCompareIsNot0 = new EqualExpression(floatCompare, int0, OperatorIds.NOT_EQUAL); ifFloatCompareIsNot0.sourceStart = pS; ifFloatCompareIsNot0.sourceEnd = pE; setGeneratedBy(ifFloatCompareIsNot0, source); FalseLiteral falseLiteral = new FalseLiteral(pS, pE); setGeneratedBy(falseLiteral, source); ReturnStatement returnFalse = new ReturnStatement(falseLiteral, pS, pE); setGeneratedBy(returnFalse, source); IfStatement ifStatement = new IfStatement(ifFloatCompareIsNot0, returnFalse, pS, pE); setGeneratedBy(ifStatement, source); return ifStatement; }
public char[] returnVarNameIfNullCheck(Statement stat) { if (!(stat instanceof IfStatement)) return null; /* Check that the if's statement is a throw statement, possibly in a block. */ { Statement then = ((IfStatement) stat).thenStatement; if (then instanceof Block) { Statement[] blockStatements = ((Block) then).statements; if (blockStatements == null || blockStatements.length == 0) return null; then = blockStatements[0]; } if (!(then instanceof ThrowStatement)) return null; } /* Check that the if's conditional is like 'x == null'. Return from this method (don't generate a nullcheck) if 'x' is equal to our own variable's name: There's already a nullcheck here. */ { Expression cond = ((IfStatement) stat).condition; if (!(cond instanceof EqualExpression)) return null; EqualExpression bin = (EqualExpression) cond; int operatorId = ((bin.bits & ASTNode.OperatorMASK) >> ASTNode.OperatorSHIFT); if (operatorId != OperatorIds.EQUAL_EQUAL) return null; if (!(bin.left instanceof SingleNameReference)) return null; if (!(bin.right instanceof NullLiteral)) return null; return ((SingleNameReference) bin.left).token; } }
private void generateClearMethod(TypeReference returnType, Statement returnStatement, SingularData data, EclipseNode builderType) { MethodDeclaration md = new MethodDeclaration(((CompilationUnitDeclaration) builderType.top().get()).compilationResult); md.bits |= ECLIPSE_DO_NOT_TOUCH_FLAG; md.modifiers = ClassFileConstants.AccPublic; FieldReference thisDotField = new FieldReference(data.getPluralName(), 0L); thisDotField.receiver = new ThisReference(0, 0); FieldReference thisDotField2 = new FieldReference(data.getPluralName(), 0L); thisDotField2.receiver = new ThisReference(0, 0); md.selector = HandlerUtil.buildAccessorName("clear", new String(data.getPluralName())).toCharArray(); MessageSend clearMsg = new MessageSend(); clearMsg.receiver = thisDotField2; clearMsg.selector = "clear".toCharArray(); Statement clearStatement = new IfStatement(new EqualExpression(thisDotField, new NullLiteral(0, 0), OperatorIds.NOT_EQUAL), clearMsg, 0, 0); md.statements = returnStatement != null ? new Statement[] {clearStatement, returnStatement} : new Statement[] {clearStatement}; md.returnType = returnType; injectMethod(builderType, md); }
protected void consumeStatementIfWithElse() { // IfThenElseStatement ::= 'if' '(' Expression ')' StatementNoShortIf 'else' Statement // IfThenElseStatementNoShortIf ::= 'if' '(' Expression ')' StatementNoShortIf 'else' StatementNoShortIf this.expressionLengthPtr--; // optimized {..., Then, Else } ==> {..., If } this.astLengthPtr--; //optimize the push/pop this.astStack[--this.astPtr] = new IfStatement( this.expressionStack[this.expressionPtr--], (Statement) this.astStack[this.astPtr], (Statement) this.astStack[this.astPtr + 1], this.intStack[this.intPtr--], this.endStatementPosition); }
/** * Generates a new statement that checks if the given variable is null, and if so, throws a {@code NullPointerException} with the * variable name as message. */ public static Statement generateNullCheck(AbstractVariableDeclaration variable, ASTNode source) { int pS = source.sourceStart, pE = source.sourceEnd; long p = (long)pS << 32 | pE; if (isPrimitive(variable.type)) return null; AllocationExpression exception = new AllocationExpression(); setGeneratedBy(exception, source); exception.type = new QualifiedTypeReference(fromQualifiedName("java.lang.NullPointerException"), new long[]{p, p, p}); setGeneratedBy(exception.type, source); exception.arguments = new Expression[] { new StringLiteral(variable.name, pS, pE, 0)}; setGeneratedBy(exception.arguments[0], source); ThrowStatement throwStatement = new ThrowStatement(exception, pS, pE); setGeneratedBy(throwStatement, source); SingleNameReference varName = new SingleNameReference(variable.name, p); setGeneratedBy(varName, source); NullLiteral nullLiteral = new NullLiteral(pS, pE); setGeneratedBy(nullLiteral, source); EqualExpression equalExpression = new EqualExpression(varName, nullLiteral, OperatorIds.EQUAL_EQUAL); equalExpression.sourceStart = pS; equalExpression.statementEnd = equalExpression.sourceEnd = pE; setGeneratedBy(equalExpression, source); IfStatement ifStatement = new IfStatement(equalExpression, throwStatement, 0, 0); setGeneratedBy(ifStatement, source); return ifStatement; }
private IfStatement generateCompareFloatOrDouble(Expression thisRef, Expression otherRef, char[] floatOrDouble, ASTNode source) { int pS = source.sourceStart, pE = source.sourceEnd; /* if (Float.compare(fieldName, other.fieldName) != 0) return false */ MessageSend floatCompare = new MessageSend(); floatCompare.sourceStart = pS; floatCompare.sourceEnd = pE; setGeneratedBy(floatCompare, source); floatCompare.receiver = generateQualifiedNameRef(source, TypeConstants.JAVA, TypeConstants.LANG, floatOrDouble); floatCompare.selector = "compare".toCharArray(); floatCompare.arguments = new Expression[] {thisRef, otherRef}; IntLiteral int0 = makeIntLiteral("0".toCharArray(), source); EqualExpression ifFloatCompareIsNot0 = new EqualExpression(floatCompare, int0, OperatorIds.NOT_EQUAL); ifFloatCompareIsNot0.sourceStart = pS; ifFloatCompareIsNot0.sourceEnd = pE; setGeneratedBy(ifFloatCompareIsNot0, source); FalseLiteral falseLiteral = new FalseLiteral(pS, pE); setGeneratedBy(falseLiteral, source); ReturnStatement returnFalse = new ReturnStatement(falseLiteral, pS, pE); setGeneratedBy(returnFalse, source); IfStatement ifStatement = new IfStatement(ifFloatCompareIsNot0, returnFalse, pS, pE); setGeneratedBy(ifStatement, source); return ifStatement; }
protected Statement createConstructBuilderVarIfNeeded(SingularData data, EclipseNode builderType) { FieldReference thisDotField = new FieldReference(data.getPluralName(), 0L); thisDotField.receiver = new ThisReference(0, 0); FieldReference thisDotField2 = new FieldReference(data.getPluralName(), 0L); thisDotField2.receiver = new ThisReference(0, 0); Expression cond = new EqualExpression(thisDotField, new NullLiteral(0, 0), OperatorIds.EQUAL_EQUAL); MessageSend createBuilderInvoke = new MessageSend(); char[][] tokenizedName = makeGuavaTypeName(getSimpleTargetTypeName(data), false); createBuilderInvoke.receiver = new QualifiedNameReference(tokenizedName, NULL_POSS, 0, 0); createBuilderInvoke.selector = getBuilderMethodName(data); return new IfStatement(cond, new Assignment(thisDotField2, createBuilderInvoke, 0), 0, 0); }
private void generateClearMethod(TypeReference returnType, Statement returnStatement, SingularData data, EclipseNode builderType) { MethodDeclaration md = new MethodDeclaration(((CompilationUnitDeclaration) builderType.top().get()).compilationResult); md.bits |= ECLIPSE_DO_NOT_TOUCH_FLAG; md.modifiers = ClassFileConstants.AccPublic; String pN = new String(data.getPluralName()); char[] keyFieldName = (pN + "$key").toCharArray(); char[] valueFieldName = (pN + "$value").toCharArray(); FieldReference thisDotField = new FieldReference(keyFieldName, 0L); thisDotField.receiver = new ThisReference(0, 0); FieldReference thisDotField2 = new FieldReference(keyFieldName, 0L); thisDotField2.receiver = new ThisReference(0, 0); FieldReference thisDotField3 = new FieldReference(valueFieldName, 0L); thisDotField3.receiver = new ThisReference(0, 0); md.selector = HandlerUtil.buildAccessorName("clear", new String(data.getPluralName())).toCharArray(); MessageSend clearMsg1 = new MessageSend(); clearMsg1.receiver = thisDotField2; clearMsg1.selector = "clear".toCharArray(); MessageSend clearMsg2 = new MessageSend(); clearMsg2.receiver = thisDotField3; clearMsg2.selector = "clear".toCharArray(); Block clearMsgs = new Block(2); clearMsgs.statements = new Statement[] {clearMsg1, clearMsg2}; Statement clearStatement = new IfStatement(new EqualExpression(thisDotField, new NullLiteral(0, 0), OperatorIds.NOT_EQUAL), clearMsgs, 0, 0); md.statements = returnStatement != null ? new Statement[] {clearStatement, returnStatement} : new Statement[] {clearStatement}; md.returnType = returnType; injectMethod(builderType, md); }
protected void consumeStatementIfNoElse() { // IfThenStatement ::= 'if' '(' Expression ')' Statement //optimize the push/pop this.expressionLengthPtr--; Statement thenStatement = (Statement) this.astStack[this.astPtr]; this.astStack[this.astPtr] = new IfStatement( this.expressionStack[this.expressionPtr--], thenStatement, this.intStack[this.intPtr--], this.endStatementPosition); }
@Override public void endVisit(IfStatement x, BlockScope scope) { try { SourceInfo info = makeSourceInfo(x); JStatement elseStatement = pop(x.elseStatement); JStatement thenStatement = pop(x.thenStatement); JExpression condition = pop(x.condition); push(new JIfStatement(info, condition, thenStatement, elseStatement)); } catch (Throwable e) { throw translateException(x, e); } }
@Override public boolean visit(IfStatement x, BlockScope scope) { // SEE NOTE ON JDT FORCED OPTIMIZATIONS if (isOptimizedFalse(x.condition)) { x.thenStatement = null; } else if (isOptimizedTrue(x.condition)) { x.elseStatement = null; } return true; }
/** * Generates a new statement that checks if the given variable is null, and if so, throws a specified exception with the * variable name as message. * * @param exName The name of the exception to throw; normally {@code java.lang.NullPointerException}. */ public static Statement generateNullCheck(AbstractVariableDeclaration variable, EclipseNode sourceNode) { NullCheckExceptionType exceptionType = sourceNode.getAst().readConfiguration(ConfigurationKeys.NON_NULL_EXCEPTION_TYPE); if (exceptionType == null) exceptionType = NullCheckExceptionType.NULL_POINTER_EXCEPTION; ASTNode source = sourceNode.get(); int pS = source.sourceStart, pE = source.sourceEnd; long p = (long)pS << 32 | pE; if (isPrimitive(variable.type)) return null; AllocationExpression exception = new AllocationExpression(); setGeneratedBy(exception, source); int partCount = 1; String exceptionTypeStr = exceptionType.getExceptionType(); for (int i = 0; i < exceptionTypeStr.length(); i++) if (exceptionTypeStr.charAt(i) == '.') partCount++; long[] ps = new long[partCount]; Arrays.fill(ps, 0L); exception.type = new QualifiedTypeReference(fromQualifiedName(exceptionTypeStr), ps); setGeneratedBy(exception.type, source); exception.arguments = new Expression[] { new StringLiteral(exceptionType.toExceptionMessage(new String(variable.name)).toCharArray(), pS, pE, 0) }; setGeneratedBy(exception.arguments[0], source); ThrowStatement throwStatement = new ThrowStatement(exception, pS, pE); setGeneratedBy(throwStatement, source); SingleNameReference varName = new SingleNameReference(variable.name, p); setGeneratedBy(varName, source); NullLiteral nullLiteral = new NullLiteral(pS, pE); setGeneratedBy(nullLiteral, source); EqualExpression equalExpression = new EqualExpression(varName, nullLiteral, OperatorIds.EQUAL_EQUAL); equalExpression.sourceStart = pS; equalExpression.statementEnd = equalExpression.sourceEnd = pE; setGeneratedBy(equalExpression, source); Block throwBlock = new Block(0); throwBlock.statements = new Statement[] {throwStatement}; throwBlock.sourceStart = pS; throwBlock.sourceEnd = pE; setGeneratedBy(throwBlock, source); IfStatement ifStatement = new IfStatement(equalExpression, throwBlock, 0, 0); setGeneratedBy(ifStatement, source); return ifStatement; }
@Override public boolean visit(IfStatement node, BlockScope scope) { fixPositions(setGeneratedBy(node, source)); return super.visit(node, scope); }
@Override public boolean visit(IfStatement node, BlockScope scope) { setGeneratedBy(node, source); applyOffsetASTNode(node); return super.visit(node, scope); }
