Java Code Examples for org.springframework.expression.spel.CodeFlow#pushDescriptor()
The following examples show how to use
org.springframework.expression.spel.CodeFlow#pushDescriptor() .
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Example 1
Source File: IntLiteral.java From spring-analysis-note with MIT License | 6 votes |
@Override public void generateCode(MethodVisitor mv, CodeFlow cf) { Integer intValue = (Integer) this.value.getValue(); Assert.state(intValue != null, "No int value"); if (intValue == -1) { // Not sure we can get here because -1 is OpMinus mv.visitInsn(ICONST_M1); } else if (intValue >= 0 && intValue < 6) { mv.visitInsn(ICONST_0 + intValue); } else { mv.visitLdcInsn(intValue); } cf.pushDescriptor(this.exitTypeDescriptor); }
Example 2
Source File: OperatorInstanceof.java From java-technology-stack with MIT License | 6 votes |
@Override public void generateCode(MethodVisitor mv, CodeFlow cf) { getLeftOperand().generateCode(mv, cf); CodeFlow.insertBoxIfNecessary(mv, cf.lastDescriptor()); Assert.state(this.type != null, "No type available"); if (this.type.isPrimitive()) { // always false - but left operand code always driven // in case it had side effects mv.visitInsn(POP); mv.visitInsn(ICONST_0); // value of false } else { mv.visitTypeInsn(INSTANCEOF, Type.getInternalName(this.type)); } cf.pushDescriptor(this.exitTypeDescriptor); }
Example 3
Source File: OpAnd.java From lams with GNU General Public License v2.0 | 6 votes |
@Override public void generateCode(MethodVisitor mv, CodeFlow cf) { // Pseudo: if (!leftOperandValue) { result=false; } else { result=rightOperandValue; } Label elseTarget = new Label(); Label endOfIf = new Label(); cf.enterCompilationScope(); getLeftOperand().generateCode(mv, cf); cf.unboxBooleanIfNecessary(mv); cf.exitCompilationScope(); mv.visitJumpInsn(IFNE, elseTarget); mv.visitLdcInsn(0); // FALSE mv.visitJumpInsn(GOTO,endOfIf); mv.visitLabel(elseTarget); cf.enterCompilationScope(); getRightOperand().generateCode(mv, cf); cf.unboxBooleanIfNecessary(mv); cf.exitCompilationScope(); mv.visitLabel(endOfIf); cf.pushDescriptor(this.exitTypeDescriptor); }
Example 4
Source File: OpAnd.java From spring4-understanding with Apache License 2.0 | 6 votes |
@Override public void generateCode(MethodVisitor mv, CodeFlow cf) { // Pseudo: if (!leftOperandValue) { result=false; } else { result=rightOperandValue; } Label elseTarget = new Label(); Label endOfIf = new Label(); cf.enterCompilationScope(); getLeftOperand().generateCode(mv, cf); cf.unboxBooleanIfNecessary(mv); cf.exitCompilationScope(); mv.visitJumpInsn(IFNE, elseTarget); mv.visitLdcInsn(0); // FALSE mv.visitJumpInsn(GOTO,endOfIf); mv.visitLabel(elseTarget); cf.enterCompilationScope(); getRightOperand().generateCode(mv, cf); cf.unboxBooleanIfNecessary(mv); cf.exitCompilationScope(); mv.visitLabel(endOfIf); cf.pushDescriptor(this.exitTypeDescriptor); }
Example 5
Source File: OperatorInstanceof.java From spring-analysis-note with MIT License | 6 votes |
@Override public void generateCode(MethodVisitor mv, CodeFlow cf) { getLeftOperand().generateCode(mv, cf); CodeFlow.insertBoxIfNecessary(mv, cf.lastDescriptor()); Assert.state(this.type != null, "No type available"); if (this.type.isPrimitive()) { // always false - but left operand code always driven // in case it had side effects mv.visitInsn(POP); mv.visitInsn(ICONST_0); // value of false } else { mv.visitTypeInsn(INSTANCEOF, Type.getInternalName(this.type)); } cf.pushDescriptor(this.exitTypeDescriptor); }
Example 6
Source File: ConstructorReference.java From spring-analysis-note with MIT License | 6 votes |
@Override public void generateCode(MethodVisitor mv, CodeFlow cf) { ReflectiveConstructorExecutor executor = ((ReflectiveConstructorExecutor) this.cachedExecutor); Assert.state(executor != null, "No cached executor"); Constructor<?> constructor = executor.getConstructor(); String classDesc = constructor.getDeclaringClass().getName().replace('.', '/'); mv.visitTypeInsn(NEW, classDesc); mv.visitInsn(DUP); // children[0] is the type of the constructor, don't want to include that in argument processing SpelNodeImpl[] arguments = new SpelNodeImpl[this.children.length - 1]; System.arraycopy(this.children, 1, arguments, 0, this.children.length - 1); generateCodeForArguments(mv, cf, constructor, arguments); mv.visitMethodInsn(INVOKESPECIAL, classDesc, "<init>", CodeFlow.createSignatureDescriptor(constructor), false); cf.pushDescriptor(this.exitTypeDescriptor); }
Example 7
Source File: VariableReference.java From spring4-understanding with Apache License 2.0 | 5 votes |
@Override public void generateCode(MethodVisitor mv, CodeFlow cf) { if (this.name.equals(ROOT)) { mv.visitVarInsn(ALOAD,1); } else { mv.visitVarInsn(ALOAD, 2); mv.visitLdcInsn(name); mv.visitMethodInsn(INVOKEINTERFACE, "org/springframework/expression/EvaluationContext", "lookupVariable", "(Ljava/lang/String;)Ljava/lang/Object;",true); } CodeFlow.insertCheckCast(mv,this.exitTypeDescriptor); cf.pushDescriptor(this.exitTypeDescriptor); }
Example 8
Source File: OpEQ.java From java-technology-stack with MIT License | 5 votes |
@Override public void generateCode(MethodVisitor mv, CodeFlow cf) { cf.loadEvaluationContext(mv); String leftDesc = getLeftOperand().exitTypeDescriptor; String rightDesc = getRightOperand().exitTypeDescriptor; boolean leftPrim = CodeFlow.isPrimitive(leftDesc); boolean rightPrim = CodeFlow.isPrimitive(rightDesc); cf.enterCompilationScope(); getLeftOperand().generateCode(mv, cf); cf.exitCompilationScope(); if (leftPrim) { CodeFlow.insertBoxIfNecessary(mv, leftDesc.charAt(0)); } cf.enterCompilationScope(); getRightOperand().generateCode(mv, cf); cf.exitCompilationScope(); if (rightPrim) { CodeFlow.insertBoxIfNecessary(mv, rightDesc.charAt(0)); } String operatorClassName = Operator.class.getName().replace('.', '/'); String evaluationContextClassName = EvaluationContext.class.getName().replace('.', '/'); mv.visitMethodInsn(INVOKESTATIC, operatorClassName, "equalityCheck", "(L" + evaluationContextClassName + ";Ljava/lang/Object;Ljava/lang/Object;)Z", false); cf.pushDescriptor("Z"); }
Example 9
Source File: Ternary.java From spring4-understanding with Apache License 2.0 | 5 votes |
@Override public void generateCode(MethodVisitor mv, CodeFlow cf) { // May reach here without it computed if all elements are literals computeExitTypeDescriptor(); cf.enterCompilationScope(); this.children[0].generateCode(mv, cf); if (!CodeFlow.isPrimitive(cf.lastDescriptor())) { CodeFlow.insertUnboxInsns(mv, 'Z', cf.lastDescriptor()); } cf.exitCompilationScope(); Label elseTarget = new Label(); Label endOfIf = new Label(); mv.visitJumpInsn(IFEQ, elseTarget); cf.enterCompilationScope(); this.children[1].generateCode(mv, cf); if (!CodeFlow.isPrimitive(this.exitTypeDescriptor)) { CodeFlow.insertBoxIfNecessary(mv, cf.lastDescriptor().charAt(0)); } cf.exitCompilationScope(); mv.visitJumpInsn(GOTO, endOfIf); mv.visitLabel(elseTarget); cf.enterCompilationScope(); this.children[2].generateCode(mv, cf); if (!CodeFlow.isPrimitive(this.exitTypeDescriptor)) { CodeFlow.insertBoxIfNecessary(mv, cf.lastDescriptor().charAt(0)); } cf.exitCompilationScope(); mv.visitLabel(endOfIf); cf.pushDescriptor(this.exitTypeDescriptor); }
Example 10
Source File: IntLiteral.java From spring4-understanding with Apache License 2.0 | 5 votes |
@Override public void generateCode(MethodVisitor mv, CodeFlow cf) { int intValue = (Integer) this.value.getValue(); if (intValue == -1) { // Not sure we can get here because -1 is OpMinus mv.visitInsn(ICONST_M1); } else if (intValue >= 0 && intValue < 6) { mv.visitInsn(ICONST_0 + intValue); } else { mv.visitLdcInsn(intValue); } cf.pushDescriptor(this.exitTypeDescriptor); }
Example 11
Source File: FunctionReference.java From java-technology-stack with MIT License | 5 votes |
@Override public void generateCode(MethodVisitor mv, CodeFlow cf) { Method method = this.method; Assert.state(method != null, "No method handle"); String classDesc = method.getDeclaringClass().getName().replace('.', '/'); generateCodeForArguments(mv, cf, method, this.children); mv.visitMethodInsn(INVOKESTATIC, classDesc, method.getName(), CodeFlow.createSignatureDescriptor(method), false); cf.pushDescriptor(this.exitTypeDescriptor); }
Example 12
Source File: BooleanLiteral.java From java-technology-stack with MIT License | 5 votes |
@Override public void generateCode(MethodVisitor mv, CodeFlow cf) { if (this.value == BooleanTypedValue.TRUE) { mv.visitLdcInsn(1); } else { mv.visitLdcInsn(0); } cf.pushDescriptor(this.exitTypeDescriptor); }
Example 13
Source File: OpModulus.java From spring4-understanding with Apache License 2.0 | 5 votes |
@Override public void generateCode(MethodVisitor mv, CodeFlow cf) { getLeftOperand().generateCode(mv, cf); String leftDesc = getLeftOperand().exitTypeDescriptor; CodeFlow.insertNumericUnboxOrPrimitiveTypeCoercion(mv, leftDesc, this.exitTypeDescriptor.charAt(0)); if (this.children.length > 1) { cf.enterCompilationScope(); getRightOperand().generateCode(mv, cf); String rightDesc = getRightOperand().exitTypeDescriptor; cf.exitCompilationScope(); CodeFlow.insertNumericUnboxOrPrimitiveTypeCoercion(mv, rightDesc, this.exitTypeDescriptor.charAt(0)); switch (this.exitTypeDescriptor.charAt(0)) { case 'I': mv.visitInsn(IREM); break; case 'J': mv.visitInsn(LREM); break; case 'F': mv.visitInsn(FREM); break; case 'D': mv.visitInsn(DREM); break; default: throw new IllegalStateException( "Unrecognized exit type descriptor: '" + this.exitTypeDescriptor + "'"); } } cf.pushDescriptor(this.exitTypeDescriptor); }
Example 14
Source File: VariableReference.java From spring-analysis-note with MIT License | 5 votes |
@Override public void generateCode(MethodVisitor mv, CodeFlow cf) { if (this.name.equals(ROOT)) { mv.visitVarInsn(ALOAD,1); } else { mv.visitVarInsn(ALOAD, 2); mv.visitLdcInsn(this.name); mv.visitMethodInsn(INVOKEINTERFACE, "org/springframework/expression/EvaluationContext", "lookupVariable", "(Ljava/lang/String;)Ljava/lang/Object;",true); } CodeFlow.insertCheckCast(mv, this.exitTypeDescriptor); cf.pushDescriptor(this.exitTypeDescriptor); }
Example 15
Source File: FunctionReference.java From spring-analysis-note with MIT License | 5 votes |
@Override public void generateCode(MethodVisitor mv, CodeFlow cf) { Method method = this.method; Assert.state(method != null, "No method handle"); String classDesc = method.getDeclaringClass().getName().replace('.', '/'); generateCodeForArguments(mv, cf, method, this.children); mv.visitMethodInsn(INVOKESTATIC, classDesc, method.getName(), CodeFlow.createSignatureDescriptor(method), false); cf.pushDescriptor(this.exitTypeDescriptor); }
Example 16
Source File: NullLiteral.java From java-technology-stack with MIT License | 4 votes |
@Override public void generateCode(MethodVisitor mv, CodeFlow cf) { mv.visitInsn(ACONST_NULL); cf.pushDescriptor(this.exitTypeDescriptor); }
Example 17
Source File: FloatLiteral.java From lams with GNU General Public License v2.0 | 4 votes |
@Override public void generateCode(MethodVisitor mv, CodeFlow cf) { mv.visitLdcInsn(this.value.getValue()); cf.pushDescriptor(this.exitTypeDescriptor); }
Example 18
Source File: MethodReference.java From spring4-understanding with Apache License 2.0 | 4 votes |
@Override public void generateCode(MethodVisitor mv, CodeFlow cf) { CachedMethodExecutor executorToCheck = this.cachedExecutor; if (executorToCheck == null || !(executorToCheck.get() instanceof ReflectiveMethodExecutor)) { throw new IllegalStateException("No applicable cached executor found: " + executorToCheck); } ReflectiveMethodExecutor methodExecutor = (ReflectiveMethodExecutor) executorToCheck.get(); Method method = methodExecutor.getMethod(); boolean isStaticMethod = Modifier.isStatic(method.getModifiers()); String descriptor = cf.lastDescriptor(); if (descriptor == null) { if (!isStaticMethod) { // Nothing on the stack but something is needed cf.loadTarget(mv); } } else { if (isStaticMethod) { // Something on the stack when nothing is needed mv.visitInsn(POP); } } if (CodeFlow.isPrimitive(descriptor)) { CodeFlow.insertBoxIfNecessary(mv, descriptor.charAt(0)); } String classDesc = (Modifier.isPublic(method.getDeclaringClass().getModifiers()) ? method.getDeclaringClass().getName().replace('.', '/') : methodExecutor.getPublicDeclaringClass().getName().replace('.', '/')); if (!isStaticMethod) { if (descriptor == null || !descriptor.substring(1).equals(classDesc)) { CodeFlow.insertCheckCast(mv, "L" + classDesc); } } generateCodeForArguments(mv, cf, method, this.children); mv.visitMethodInsn((isStaticMethod ? INVOKESTATIC : INVOKEVIRTUAL), classDesc, method.getName(), CodeFlow.createSignatureDescriptor(method), method.getDeclaringClass().isInterface()); cf.pushDescriptor(this.exitTypeDescriptor); }
Example 19
Source File: FloatLiteral.java From spring-analysis-note with MIT License | 4 votes |
@Override public void generateCode(MethodVisitor mv, CodeFlow cf) { mv.visitLdcInsn(this.value.getValue()); cf.pushDescriptor(this.exitTypeDescriptor); }
Example 20
Source File: StringLiteral.java From spring-analysis-note with MIT License | 4 votes |
@Override public void generateCode(MethodVisitor mv, CodeFlow cf) { mv.visitLdcInsn(this.value.getValue()); cf.pushDescriptor(this.exitTypeDescriptor); }