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| package org.qedeq.kernel.parser; |
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| import java.util.ArrayList; |
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| import java.util.List; |
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| import org.qedeq.kernel.utility.IoUtility; |
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| public final class Term { |
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| private final Operator operator; |
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| private final List arguments; |
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| private final Atom atom; |
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898
| public Term(final Atom atom) {
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| this.operator = null;
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| this.arguments = null;
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| this.atom = atom;
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| } |
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334
| public Term(final Operator operator) {
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| this.operator = operator;
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| this.arguments = new ArrayList();
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| this.atom = null;
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| } |
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533
| public Term(final Operator operator, final Term firstArgument) {
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| this.operator = operator;
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| this.arguments = new ArrayList();
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| this.atom = null;
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| addArgument(firstArgument);
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| } |
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21095
| public final boolean isAtom() {
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21095
| return atom != null;
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| } |
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1564
| public final void addArgument(final Term term) {
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1564
| if (isAtom()) {
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| throw new IllegalArgumentException(
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| "this is an atom, no arguments could be added to " + atom.getValue()); |
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| } |
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1564
| if (operator.getMax() >= 0 && operator.getMax() < arguments.size() + 1) {
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| throw new IllegalArgumentException("operator could have maximal "
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| + operator.getMax() + " arguments"); |
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| } |
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1564
| arguments.add(term);
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| } |
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| public final Operator getOperator() {
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| return operator;
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| } |
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0
| public final int size() {
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| if (arguments == null) {
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| return 0;
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| } |
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| return arguments.size();
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| } |
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19531
| public final String getQedeq() {
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19531
| if (isAtom()) {
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10962
| return atom.getValue();
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| } else { |
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8569
| final StringBuffer buffer = new StringBuffer();
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8569
| buffer.append(operator.getQedeq()).append('(');
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8569
| if (operator.getQedeqArgument() != null) {
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| buffer.append(IoUtility.quote(operator.getQedeqArgument()));
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| } |
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8569
| for (int i = 0; i < arguments.size(); i++) {
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14720
| if (i > 0 || operator.getQedeqArgument() != null) {
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6160
| buffer.append(", ");
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| } |
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| buffer.append(((Term)
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| arguments.get(i)).getQedeq()); |
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| } |
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8569
| buffer.append(')');
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| return buffer.toString();
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| } |
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| } |
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| public final String getQedeqXml() {
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| return getQedeqXml(0);
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| } |
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| private final String getQedeqXml(final int level) {
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| if (isAtom()) {
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| return IoUtility.getSpaces(level * 2) + atom.getValue() + "\n";
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| } else { |
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| final StringBuffer buffer = new StringBuffer();
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| buffer.append(IoUtility.getSpaces(level * 2));
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| buffer.append("<").append(operator.getQedeq());
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| if (operator.getQedeq().endsWith("VAR")) {
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| buffer.append(" id=\"" + operator.getQedeqArgument() + "\"");
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| if (arguments == null || arguments.size() == 0) {
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| buffer.append(" />" + "\n");
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| return buffer.toString();
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| } |
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| } else if (operator.getQedeq().endsWith("CON")) {
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| buffer.append(" ref=\"" + operator.getQedeqArgument() + "\"");
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| if (arguments == null || arguments.size() == 0) {
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| buffer.append(" />" + "\n");
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| return buffer.toString();
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| } |
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| } |
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| buffer.append(">\n");
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| if (operator.getQedeqArgument() != null) {
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| } |
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| for (int i = 0; i < arguments.size(); i++) {
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| buffer.append(((Term)
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| arguments.get(i)).getQedeqXml(level + 1)); |
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| } |
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| buffer.append(IoUtility.getSpaces(level * 2));
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| buffer.append("</").append(operator.getQedeq()).append(">\n");
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| return buffer.toString();
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| } |
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| } |
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| } |