package br.com.caelum.vraptor.panettone.parser.rule;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import br.com.caelum.vraptor.panettone.parser.SourceCode;
import br.com.caelum.vraptor.panettone.parser.TextChunk;
import br.com.caelum.vraptor.panettone.parser.ast.ExpressionNode;
import br.com.caelum.vraptor.panettone.parser.ast.Node;
public class ExpressionRule implements Rule {
@Override
public List<TextChunk> getChunks(SourceCode sc) {
List<TextChunk> chunks = new ArrayList<TextChunk>();
Pattern p = Pattern.compile("@\\{((\\w)+((\\.)|(\\['?\"?)|('?\"?\\]\\.?)|(\\('?\"?\\)?)|(\\s*,\\s*)|('?\"?\\)\\.?))?)+\\}");
Matcher matcher = p.matcher(sc.getSource());
while(matcher.find()) {
chunks.add(new TextChunk(matcher.group()));
}
return chunks;
}
@Override
public Node getNode(TextChunk chunk) {
String chunkWithNoBegin = chunk.getText().trim().substring(2);
String finalChunk = chunkWithNoBegin.substring(0, chunkWithNoBegin.length()-1);
return new ExpressionNode(finalChunk.trim());
}
}