Browse Source
git-svn-id: https://src.springframework.org/svn/spring-framework/trunk@101 50f2f4bb-b051-0410-bef5-90022cba6387pull/1/head
Andy Clement
18 years ago
13 changed files with 1764 additions and 2804 deletions
@ -1,69 +0,0 @@
@@ -1,69 +0,0 @@
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/* |
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* Copyright 2004-2008 the original author or authors. |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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package org.springframework.expression.spel.ast; |
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import java.util.ArrayList; |
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import java.util.Collections; |
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import java.util.List; |
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import org.antlr.runtime.Token; |
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import org.springframework.expression.spel.SpelException; |
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import org.springframework.expression.spel.SpelMessages; |
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import org.springframework.expression.spel.ExpressionState; |
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/** |
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* Represents the list of arguments supplied to a lambda expression. For an expression "{|x,y| $x > $y ? $x : $y }" the |
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* argument list is x,y |
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* |
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* @author Andy Clement |
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* |
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*/ |
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public class ArgList extends SpelNode { |
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public ArgList(Token payload) { |
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super(payload); |
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} |
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/** |
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* @return a list of the argument names captured in this ArgList |
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*/ |
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public List<String> getArgumentNames() { |
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if (getChildCount() == 0) |
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return Collections.emptyList(); |
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List<String> result = new ArrayList<String>(); |
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for (int i = 0; i < getChildCount(); i++) { |
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result.add(getChild(i).getText()); |
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} |
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return result; |
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} |
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@Override |
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public String toStringAST() { |
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StringBuilder sb = new StringBuilder(); |
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for (int i = 0; i < getChildCount(); i++) { |
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if (i > 0) |
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sb.append(","); |
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sb.append(getChild(i).toStringAST()); |
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} |
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return sb.toString(); |
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} |
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@Override |
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public Object getValue(ExpressionState state) throws SpelException { |
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throw new SpelException(SpelMessages.ARGLIST_SHOULD_NOT_BE_EVALUATED); |
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} |
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} |
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@ -1,83 +0,0 @@
@@ -1,83 +0,0 @@
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/* |
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* Copyright 2004-2008 the original author or authors. |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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package org.springframework.expression.spel.ast; |
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import java.util.Collections; |
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import java.util.List; |
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import org.antlr.runtime.Token; |
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import org.springframework.expression.spel.SpelException; |
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import org.springframework.expression.spel.ExpressionState; |
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/** |
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* Represent a Lambda expression, eg. "{|x,y| $x > $y ? $x : $y }". It is possible for an expression to have zero |
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* arguments in which case this expression node only has one child. |
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* |
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* @author Andy Clement |
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*/ |
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public class Lambda extends SpelNode { |
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public Lambda(Token payload) { |
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super(payload); |
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// payload.setText("LambdaExpression");
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} |
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@Override |
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public Object getValue(ExpressionState state) throws SpelException { |
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return this; |
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} |
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@Override |
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public String toStringAST() { |
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StringBuilder sb = new StringBuilder(); |
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if (getChildCount() == 1) { // there are no arguments
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sb.append("{|| "); |
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sb.append(getChild(0).toStringAST()); |
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sb.append(" }"); |
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} else { |
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sb.append("{|"); |
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sb.append(getChild(0).toStringAST()); |
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sb.append("| "); |
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sb.append(getChild(1).toStringAST()); |
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sb.append(" }"); |
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} |
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return sb.toString(); |
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} |
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@Override |
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public String toString() { |
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return toStringAST(); |
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} |
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public List<String> getArguments() { |
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// Only one child means there are no arguments
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if (getChildCount() < 2) { |
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return Collections.emptyList(); |
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} |
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ArgList args = (ArgList) getChild(0); |
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return args.getArgumentNames(); |
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} |
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public Object getExpression() { |
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return (getChildCount() > 1 ? getChild(1) : getChild(0)); |
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} |
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@Override |
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public boolean isWritable(ExpressionState expressionState) throws SpelException { |
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return false; |
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} |
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} |
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@ -1,88 +0,0 @@
@@ -1,88 +0,0 @@
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/* |
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* Copyright 2004-2008 the original author or authors. |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0
|
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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package org.springframework.expression.spel.ast; |
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import java.util.HashMap; |
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import java.util.List; |
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import java.util.Map; |
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import org.antlr.runtime.Token; |
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import org.springframework.expression.EvaluationException; |
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import org.springframework.expression.spel.SpelException; |
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import org.springframework.expression.spel.SpelMessages; |
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import org.springframework.expression.spel.ExpressionState; |
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/** |
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* Local functions are references like $fn() where fn is the 'local' to lookup in the local scope Example: "(#sqrt={|n| |
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* T(Math).sqrt($n)};#delegate={|f,n| $f($n)};#delegate(#sqrt,4))" |
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* |
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* @author Andy Clement |
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*/ |
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public class LocalFunctionReference extends SpelNode { |
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private final String name; |
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public LocalFunctionReference(Token payload) { |
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super(payload); |
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name = payload.getText(); |
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} |
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@Override |
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public Object getValue(ExpressionState state) throws EvaluationException { |
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Object o = state.lookupLocalVariable(name); |
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if (o == null) { |
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throw new SpelException(SpelMessages.FUNCTION_NOT_DEFINED, name); |
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} |
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if (!(o instanceof Lambda)) { |
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throw new SpelException(SpelMessages.FUNCTION_REFERENCE_CANNOT_BE_INVOKED, name, o.getClass().getName()); |
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} |
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Object[] arguments = new Object[getChildCount()]; |
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for (int i = 0; i < arguments.length; i++) { |
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arguments[i] = getChild(i).getValue(state); |
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} |
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Lambda lambdaExpression = (Lambda) o; |
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List<String> args = lambdaExpression.getArguments(); |
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Map<String, Object> argMap = new HashMap<String, Object>(); |
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if (args.size() != arguments.length) { |
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throw new SpelException(getCharPositionInLine(), SpelMessages.INCORRECT_NUMBER_OF_ARGUMENTS_TO_FUNCTION, |
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arguments.length, args.size()); |
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} |
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for (int i = 0; i < args.size(); i++) { |
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argMap.put(args.get(i), arguments[i]); |
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} |
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try { |
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state.enterScope(argMap); |
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return ((SpelNode) lambdaExpression.getExpression()).getValue(state); |
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} finally { |
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state.exitScope(); |
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} |
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} |
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@Override |
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public String toStringAST() { |
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StringBuilder sb = new StringBuilder("$").append(name); |
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sb.append("("); |
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for (int i = 0; i < getChildCount(); i++) { |
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if (i > 0) |
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sb.append(","); |
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sb.append(getChild(i).toStringAST()); |
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} |
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sb.append(")"); |
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return sb.toString(); |
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} |
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} |
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@ -1,64 +0,0 @@
@@ -1,64 +0,0 @@
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/* |
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* Copyright 2004-2008 the original author or authors. |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0
|
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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package org.springframework.expression.spel.ast; |
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|
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import org.antlr.runtime.Token; |
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import org.springframework.expression.spel.SpelException; |
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import org.springframework.expression.spel.SpelMessages; |
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import org.springframework.expression.spel.ExpressionState; |
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|
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/** |
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* A variable reference such as $someVar. Local variables are only visible at the current scoping level or below within |
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* an expression. Calling a function introduces a new nested scope. |
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* |
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* @author Andy Clement |
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* |
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*/ |
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public class LocalVariableReference extends SpelNode { |
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private final String name; |
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public LocalVariableReference(Token payload) { |
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super(payload); |
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name = payload.getText(); |
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} |
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@Override |
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public Object getValue(ExpressionState state) throws SpelException { |
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Object result = state.lookupLocalVariable(name); |
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if (result == null) { |
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throw new SpelException(getCharPositionInLine(), SpelMessages.LOCAL_VARIABLE_NOT_DEFINED, name); |
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} |
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return result; |
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} |
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@Override |
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public void setValue(ExpressionState state, Object value) throws SpelException { |
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// Object oldValue = state.lookupVariable(name);
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state.setLocalVariable(name, value); |
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} |
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@Override |
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public String toStringAST() { |
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return new StringBuilder("$").append(name).toString(); |
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} |
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@Override |
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public boolean isWritable(ExpressionState expressionState) throws SpelException { |
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return true; |
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} |
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} |
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@ -1,87 +1,83 @@
@@ -1,87 +1,83 @@
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GREATER_THAN_OR_EQUAL=77 |
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SELECT_FIRST=56 |
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COMMA=49 |
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HOLDER=13 |
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GREATER_THAN=76 |
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TYPE=58 |
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GREATER_THAN_OR_EQUAL=71 |
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SELECT_FIRST=52 |
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COMMA=45 |
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HOLDER=12 |
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GREATER_THAN=70 |
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TYPE=54 |
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EXPRESSIONLIST=4 |
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MINUS=39 |
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MAP_ENTRY=24 |
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SELECT_LAST=57 |
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NUMBER=28 |
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LESS_THAN=74 |
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BANG=44 |
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ARGLIST=11 |
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FALSE=68 |
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METHOD=25 |
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MINUS=36 |
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MAP_ENTRY=21 |
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SELECT_LAST=53 |
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NUMBER=25 |
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LESS_THAN=68 |
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BANG=41 |
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FALSE=62 |
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METHOD=22 |
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PROPERTY_OR_FIELD=9 |
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LBRACKET=51 |
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LBRACKET=47 |
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INDEXER=10 |
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MOD=42 |
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CONSTRUCTOR_ARRAY=14 |
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FUNCTIONREF=16 |
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NULL_LITERAL=64 |
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NAMED_ARGUMENT=15 |
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OR=36 |
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PIPE=60 |
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DOT=45 |
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RCURLY=54 |
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MOD=39 |
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CONSTRUCTOR_ARRAY=13 |
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FUNCTIONREF=15 |
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NULL_LITERAL=58 |
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NAMED_ARGUMENT=14 |
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OR=33 |
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PIPE=77 |
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DOT=42 |
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RCURLY=50 |
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EXPRESSION=6 |
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AND=37 |
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LCURLY=61 |
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REAL_TYPE_SUFFIX=88 |
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STRING_LITERAL=62 |
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SELECT=55 |
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AND=34 |
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LCURLY=55 |
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REAL_TYPE_SUFFIX=84 |
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STRING_LITERAL=56 |
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SELECT=51 |
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QUALIFIED_IDENTIFIER=7 |
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RBRACKET=52 |
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SUBTRACT=27 |
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ASSIGN=30 |
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BETWEEN=80 |
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RPAREN=35 |
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SIGN=89 |
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LPAREN=34 |
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HEX_DIGIT=71 |
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PLUS=38 |
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LIST_INITIALIZER=20 |
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APOS=83 |
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RBRACKET=48 |
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SUBTRACT=24 |
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ASSIGN=27 |
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BETWEEN=74 |
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RPAREN=32 |
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SIGN=85 |
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LPAREN=31 |
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HEX_DIGIT=65 |
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PLUS=35 |
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LIST_INITIALIZER=19 |
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APOS=78 |
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INTEGER_LITERAL=5 |
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AT=50 |
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ID=47 |
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NOT_EQUAL=73 |
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RANGE=18 |
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POWER=43 |
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TYPEREF=17 |
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DECIMAL_DIGIT=69 |
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WS=85 |
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IS=79 |
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DOLLAR=48 |
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LESS_THAN_OR_EQUAL=75 |
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SEMIRPAREN=29 |
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DQ_STRING_LITERAL=63 |
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HEXADECIMAL_INTEGER_LITERAL=65 |
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MAP_INITIALIZER=21 |
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LAMBDA=59 |
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LOCALFUNC=23 |
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IN=78 |
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SEMI=82 |
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CONSTRUCTOR=12 |
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INTEGER_TYPE_SUFFIX=70 |
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EQUAL=72 |
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MATCHES=81 |
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DOT_ESCAPED=84 |
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UPTO=86 |
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QMARK=32 |
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AT=46 |
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ID=44 |
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NOT_EQUAL=67 |
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RANGE=17 |
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POWER=40 |
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TYPEREF=16 |
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DECIMAL_DIGIT=63 |
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WS=80 |
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IS=73 |
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DOLLAR=81 |
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LESS_THAN_OR_EQUAL=69 |
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SEMIRPAREN=26 |
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DQ_STRING_LITERAL=57 |
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HEXADECIMAL_INTEGER_LITERAL=59 |
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MAP_INITIALIZER=20 |
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IN=72 |
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SEMI=76 |
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CONSTRUCTOR=11 |
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INTEGER_TYPE_SUFFIX=64 |
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EQUAL=66 |
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MATCHES=75 |
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DOT_ESCAPED=79 |
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UPTO=82 |
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QMARK=29 |
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REFERENCE=8 |
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PROJECT=53 |
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DEFAULT=31 |
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COLON=33 |
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DIV=41 |
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LOCALVAR=22 |
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STAR=40 |
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REAL_LITERAL=66 |
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VARIABLEREF=19 |
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EXPONENT_PART=87 |
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TRUE=67 |
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ADD=26 |
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POUND=46 |
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'new'=90 |
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PROJECT=49 |
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DEFAULT=28 |
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COLON=30 |
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DIV=38 |
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STAR=37 |
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REAL_LITERAL=60 |
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VARIABLEREF=18 |
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EXPONENT_PART=83 |
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TRUE=61 |
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ADD=23 |
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POUND=43 |
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'new'=86 |
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|
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