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author | Éamonn McManus <eamonn@mcmanus.net> | 2017-12-27 16:54:45 -0800 |
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committer | Éamonn McManus <eamonn@mcmanus.net> | 2017-12-27 16:54:45 -0800 |
commit | d68715b3e62b4f1b8ebd7fa051004934a2ba913d (patch) | |
tree | 160d1cdf81b4b61c3e27d74fff3e6f4a74ed675a /src/main/java/com/google/escapevelocity/ConstantExpressionNode.java | |
download | escapevelocity-d68715b3e62b4f1b8ebd7fa051004934a2ba913d.tar.gz |
Initial version.
This is forked from the code built in to AutoValue, with the following non-trivial changes:
(1) Package changed from com.google.auto.value.processor.escapevelocity to com.google.escapevelocity.
(2) New pom.xml.
(3) Code rewritten to remove Guava dependency, so no shading or diamond dependency problems.
Diffstat (limited to 'src/main/java/com/google/escapevelocity/ConstantExpressionNode.java')
-rw-r--r-- | src/main/java/com/google/escapevelocity/ConstantExpressionNode.java | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/src/main/java/com/google/escapevelocity/ConstantExpressionNode.java b/src/main/java/com/google/escapevelocity/ConstantExpressionNode.java new file mode 100644 index 0000000..a4dfe17 --- /dev/null +++ b/src/main/java/com/google/escapevelocity/ConstantExpressionNode.java @@ -0,0 +1,41 @@ +/* + * Copyright (C) 2015 Google, Inc. + * + * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except + * in compliance with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software distributed under the License + * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express + * or implied. See the License for the specific language governing permissions and limitations under + * the License. + */ +package com.google.escapevelocity; + +/** + * A node in the parse tree representing a constant value. Evaluating the node yields the constant + * value. Instances of this class are used both in expressions, like the {@code 23} in + * {@code #set ($x = 23)}, and for literal text in templates. In the template... + * <pre>{@code + * abc#{if}($x == 5)def#{end}xyz + * }</pre> + * ...each of the strings {@code abc}, {@code def}, {@code xyz} is represented by an instance of + * this class that {@linkplain #evaluate evaluates} to that string, and the value {@code 5} is + * represented by an instance of this class that evaluates to the integer 5. + * + * @author emcmanus@google.com (Éamonn McManus) + */ +class ConstantExpressionNode extends ExpressionNode { + private final Object value; + + ConstantExpressionNode(String resourceName, int lineNumber, Object value) { + super(resourceName, lineNumber); + this.value = value; + } + + @Override + Object evaluate(EvaluationContext context) { + return value; + } +} |