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| 1 | +/* |
| 2 | + * Licensed to the Apache Software Foundation (ASF) under one |
| 3 | + * or more contributor license agreements. See the NOTICE file |
| 4 | + * distributed with this work for additional information |
| 5 | + * regarding copyright ownership. The ASF licenses this file |
| 6 | + * to you under the Apache License, Version 2.0 (the |
| 7 | + * "License"); you may not use this file except in compliance |
| 8 | + * with the License. You may obtain a copy of the License at |
| 9 | + * |
| 10 | + * http://www.apache.org/licenses/LICENSE-2.0 |
| 11 | + * |
| 12 | + * Unless required by applicable law or agreed to in writing, |
| 13 | + * software distributed under the License is distributed on an |
| 14 | + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| 15 | + * KIND, either express or implied. See the License for the |
| 16 | + * specific language governing permissions and limitations |
| 17 | + * under the License. |
| 18 | + */ |
| 19 | +package org.codehaus.groovy.transform.sc.transformers; |
| 20 | + |
| 21 | +import org.codehaus.groovy.ast.ClassCodeExpressionTransformer; |
| 22 | +import org.codehaus.groovy.ast.ClassHelper; |
| 23 | +import org.codehaus.groovy.ast.ClassNode; |
| 24 | +import org.codehaus.groovy.ast.InnerClassNode; |
| 25 | +import org.codehaus.groovy.ast.MethodNode; |
| 26 | +import org.codehaus.groovy.ast.expr.BinaryExpression; |
| 27 | +import org.codehaus.groovy.ast.expr.BooleanExpression; |
| 28 | +import org.codehaus.groovy.ast.expr.CastExpression; |
| 29 | +import org.codehaus.groovy.ast.expr.ClosureExpression; |
| 30 | +import org.codehaus.groovy.ast.expr.ConstructorCallExpression; |
| 31 | +import org.codehaus.groovy.ast.expr.Expression; |
| 32 | +import org.codehaus.groovy.ast.expr.ListExpression; |
| 33 | +import org.codehaus.groovy.ast.expr.MethodCallExpression; |
| 34 | +import org.codehaus.groovy.ast.expr.PropertyExpression; |
| 35 | +import org.codehaus.groovy.ast.expr.RangeExpression; |
| 36 | +import org.codehaus.groovy.ast.expr.StaticMethodCallExpression; |
| 37 | +import org.codehaus.groovy.ast.expr.VariableExpression; |
| 38 | +import org.codehaus.groovy.ast.stmt.Statement; |
| 39 | +import org.codehaus.groovy.classgen.asm.sc.StaticTypesTypeChooser; |
| 40 | +import org.codehaus.groovy.control.SourceUnit; |
| 41 | +import org.codehaus.groovy.runtime.ScriptBytecodeAdapter; |
| 42 | +import org.codehaus.groovy.syntax.Types; |
| 43 | +import org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor; |
| 44 | + |
| 45 | +import java.util.Collections; |
| 46 | +import java.util.HashMap; |
| 47 | +import java.util.Iterator; |
| 48 | +import java.util.Map; |
| 49 | + |
| 50 | +/** |
| 51 | + * Some expressions use symbols as aliases to method calls (<<, +=, ...). In static compilation, |
| 52 | + * if such a method call is found, we transform the original binary expression into a method |
| 53 | + * call expression so that the call gets statically compiled. |
| 54 | + */ |
| 55 | +public class StaticCompilationTransformer extends ClassCodeExpressionTransformer { |
| 56 | + |
| 57 | + protected static final ClassNode BYTECODE_ADAPTER_CLASS = ClassHelper.make(ScriptBytecodeAdapter.class); |
| 58 | + protected static final Map<Integer, MethodNode> BYTECODE_BINARY_ADAPTERS = Collections.unmodifiableMap(new HashMap<Integer, MethodNode>() { |
| 59 | + private static final long serialVersionUID = -9117028399464862605L; |
| 60 | + |
| 61 | + { |
| 62 | + put(Types.COMPARE_EQUAL, BYTECODE_ADAPTER_CLASS.getMethods("compareEqual").get(0)); |
| 63 | + put(Types.COMPARE_GREATER_THAN, BYTECODE_ADAPTER_CLASS.getMethods("compareGreaterThan").get(0)); |
| 64 | + put(Types.COMPARE_GREATER_THAN_EQUAL, BYTECODE_ADAPTER_CLASS.getMethods("compareGreaterThanEqual").get(0)); |
| 65 | + put(Types.COMPARE_LESS_THAN, BYTECODE_ADAPTER_CLASS.getMethods("compareLessThan").get(0)); |
| 66 | + put(Types.COMPARE_LESS_THAN_EQUAL, BYTECODE_ADAPTER_CLASS.getMethods("compareLessThanEqual").get(0)); |
| 67 | + put(Types.COMPARE_NOT_EQUAL, BYTECODE_ADAPTER_CLASS.getMethods("compareNotEqual").get(0)); |
| 68 | + put(Types.COMPARE_TO, BYTECODE_ADAPTER_CLASS.getMethods("compareTo").get(0)); |
| 69 | + |
| 70 | + }}); |
| 71 | + |
| 72 | + |
| 73 | + private ClassNode classNode; |
| 74 | + private final SourceUnit unit; |
| 75 | + |
| 76 | + private final StaticTypesTypeChooser typeChooser = new StaticTypesTypeChooser(); |
| 77 | + private final StaticTypeCheckingVisitor staticCompilationVisitor; |
| 78 | + |
| 79 | + // various helpers in order to avoid a potential very big class |
| 80 | + private final StaticMethodCallExpressionTransformer staticMethodCallExpressionTransformer = new StaticMethodCallExpressionTransformer(this); |
| 81 | + private final ConstructorCallTransformer constructorCallTransformer = new ConstructorCallTransformer(this); |
| 82 | + private final MethodCallExpressionTransformer methodCallExpressionTransformer = new MethodCallExpressionTransformer(this); |
| 83 | + private final BinaryExpressionTransformer binaryExpressionTransformer = new BinaryExpressionTransformer(this); |
| 84 | + private final ClosureExpressionTransformer closureExpressionTransformer = new ClosureExpressionTransformer(this); |
| 85 | + private final BooleanExpressionTransformer booleanExpressionTransformer = new BooleanExpressionTransformer(this); |
| 86 | + private final VariableExpressionTransformer variableExpressionTransformer = new VariableExpressionTransformer(); |
| 87 | + private final RangeExpressionTransformer rangeExpressionTransformer = new RangeExpressionTransformer(this); |
| 88 | + private final ListExpressionTransformer listExpressionTransformer = new ListExpressionTransformer(this); |
| 89 | + private final CastExpressionOptimizer castExpressionTransformer = new CastExpressionOptimizer(this); |
| 90 | + |
| 91 | + public StaticCompilationTransformer(final SourceUnit unit, final StaticTypeCheckingVisitor visitor) { |
| 92 | + this.unit = unit; |
| 93 | + this.staticCompilationVisitor = visitor; |
| 94 | + } |
| 95 | + |
| 96 | + @Override |
| 97 | + protected SourceUnit getSourceUnit() { |
| 98 | + return unit; |
| 99 | + } |
| 100 | + |
| 101 | + public StaticTypesTypeChooser getTypeChooser() { |
| 102 | + return typeChooser; |
| 103 | + } |
| 104 | + |
| 105 | + public ClassNode getClassNode() { |
| 106 | + return classNode; |
| 107 | + } |
| 108 | + |
| 109 | + @Override |
| 110 | + public void visitClassCodeContainer(final Statement code) { |
| 111 | + super.visitClassCodeContainer(code); |
| 112 | + } |
| 113 | + |
| 114 | + @Override |
| 115 | + public Expression transform(Expression expr) { |
| 116 | + // GRECLIPSE add -- GROOVY-6097, GROOVY-7300, et al. |
| 117 | + if (expr instanceof PropertyExpression) { |
| 118 | + MethodNode dmct = expr.getNodeMetaData(org.codehaus.groovy.transform.stc.StaticTypesMarker.DIRECT_METHOD_CALL_TARGET); |
| 119 | + // NOTE: BinaryExpressionTransformer handles the setter |
| 120 | + if (dmct != null && dmct.getParameters().length == 0) { |
| 121 | + PropertyExpression pe = (PropertyExpression) expr; |
| 122 | + |
| 123 | + MethodCallExpression mce = new MethodCallExpression(transform(pe.getObjectExpression()), dmct.getName(), MethodCallExpression.NO_ARGUMENTS); |
| 124 | + mce.setImplicitThis(pe.isImplicitThis()); |
| 125 | + mce.setSpreadSafe(pe.isSpreadSafe()); |
| 126 | + mce.setMethodTarget(dmct); |
| 127 | + mce.setSourcePosition(pe); |
| 128 | + mce.copyNodeMetaData(pe); |
| 129 | + mce.setSafe(pe.isSafe()); |
| 130 | + return mce; |
| 131 | + } |
| 132 | + return super.transform(expr); |
| 133 | + } |
| 134 | + // GRECLIPSE end |
| 135 | + if (expr instanceof StaticMethodCallExpression) { |
| 136 | + return staticMethodCallExpressionTransformer.transformStaticMethodCallExpression((StaticMethodCallExpression) expr); |
| 137 | + } |
| 138 | + if (expr instanceof BinaryExpression) { |
| 139 | + return binaryExpressionTransformer.transformBinaryExpression((BinaryExpression)expr); |
| 140 | + } |
| 141 | + if (expr instanceof MethodCallExpression) { |
| 142 | + return methodCallExpressionTransformer.transformMethodCallExpression((MethodCallExpression) expr); |
| 143 | + } |
| 144 | + if (expr instanceof ClosureExpression) { |
| 145 | + return closureExpressionTransformer.transformClosureExpression((ClosureExpression) expr); |
| 146 | + } |
| 147 | + if (expr instanceof ConstructorCallExpression) { |
| 148 | + return constructorCallTransformer.transformConstructorCall((ConstructorCallExpression) expr); |
| 149 | + } |
| 150 | + if (expr instanceof BooleanExpression) { |
| 151 | + return booleanExpressionTransformer.transformBooleanExpression((BooleanExpression)expr); |
| 152 | + } |
| 153 | + if (expr instanceof VariableExpression) { |
| 154 | + return variableExpressionTransformer.transformVariableExpression((VariableExpression)expr); |
| 155 | + } |
| 156 | + if (expr instanceof RangeExpression) { |
| 157 | + return rangeExpressionTransformer.transformRangeExpression(((RangeExpression)expr)); |
| 158 | + } |
| 159 | + if (expr instanceof ListExpression) { |
| 160 | + return listExpressionTransformer.transformListExpression((ListExpression) expr); |
| 161 | + } |
| 162 | + if (expr instanceof CastExpression) { |
| 163 | + return castExpressionTransformer.transformCastExpression(((CastExpression)expr)); |
| 164 | + } |
| 165 | + return super.transform(expr); |
| 166 | + } |
| 167 | + |
| 168 | + /** |
| 169 | + * Called by helpers when super.transform() is needed. |
| 170 | + */ |
| 171 | + final Expression superTransform(Expression expr) { |
| 172 | + return super.transform(expr); |
| 173 | + } |
| 174 | + |
| 175 | + @Override |
| 176 | + public void visitClass(final ClassNode node) { |
| 177 | + ClassNode prec = classNode; |
| 178 | + classNode = node; |
| 179 | + super.visitClass(node); |
| 180 | + Iterator<InnerClassNode> innerClasses = classNode.getInnerClasses(); |
| 181 | + while (innerClasses.hasNext()) { |
| 182 | + InnerClassNode innerClassNode = innerClasses.next(); |
| 183 | + visitClass(innerClassNode); |
| 184 | + } |
| 185 | + classNode = prec; |
| 186 | + } |
| 187 | + |
| 188 | + @Override |
| 189 | + protected void visitConstructorOrMethod(final MethodNode node, final boolean isConstructor) { |
| 190 | + if (staticCompilationVisitor.isSkipMode(node)) { |
| 191 | + // method has already been visited by a static type checking visitor |
| 192 | + return; |
| 193 | + } |
| 194 | + super.visitConstructorOrMethod(node, isConstructor); |
| 195 | + } |
| 196 | +} |
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