/
UrlPlugin.java
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/
UrlPlugin.java
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/*
* Copyright (c) 2016, salesforce.com, inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice, this list of conditions and
* the following disclaimer in the documentation and/or other materials provided with the distribution.
*
* Neither the name of salesforce.com, inc. nor the names of its contributors may be used to endorse or
* promote products derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
package com.salesforce.omakase.plugin.syntax;
import com.salesforce.omakase.Message;
import com.salesforce.omakase.ast.RawFunction;
import com.salesforce.omakase.ast.declaration.QuotationMode;
import com.salesforce.omakase.ast.declaration.UrlFunctionValue;
import com.salesforce.omakase.broadcast.Broadcaster;
import com.salesforce.omakase.broadcast.annotation.Refine;
import com.salesforce.omakase.parser.Grammar;
import com.salesforce.omakase.parser.ParserException;
import com.salesforce.omakase.parser.Source;
import com.salesforce.omakase.parser.token.Tokens;
import com.salesforce.omakase.plugin.Plugin;
/**
* Refines {@link RawFunction}s to {@link UrlFunctionValue}s.
*
* @author nmcwilliams
* @see UrlFunctionValue
*/
public final class UrlPlugin implements Plugin {
/**
* Refines {@link RawFunction}s to {@link UrlFunctionValue}s.
* <p>
* If refinement is successful the new unit will be broadcasted via the given {@link Broadcaster}.
*
* @param function
* The function to parse.
* @param grammar
* The grammar.
* @param broadcaster
* The broadcaster.
*/
@Refine("url")
public void refine(RawFunction function, Grammar grammar, Broadcaster broadcaster) {
Source source = new Source(function.args().trim());
// check for quotes
QuotationMode mode = null;
if (Tokens.DOUBLE_QUOTE.matches(source.current())) {
mode = QuotationMode.DOUBLE;
} else if (Tokens.SINGLE_QUOTE.matches(source.current())) {
mode = QuotationMode.SINGLE;
}
// get the url content
String args = (mode != null) ? source.readString().get() : function.args();
// there shouldn't be any content after a closing quote
if (mode != null && !source.eof()) {
throw new ParserException(function, Message.UNEXPECTED_AFTER_QUOTE, source.toString());
}
// create the value object and broadcast it
UrlFunctionValue url = new UrlFunctionValue(function.line(), function.column(), args);
url.quotationMode(mode);
broadcaster.broadcast(url);
}
}