org.unlaxer.tinyexpression.evaluator.javacode.BooleanExpressionBuilder Maven / Gradle / Ivy
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TinyExpression implemented with Unlaxer
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package org.unlaxer.tinyexpression.evaluator.javacode;
import java.util.List;
import org.unlaxer.Token;
import org.unlaxer.parser.Parser;
import org.unlaxer.tinyexpression.parser.AndParser;
import org.unlaxer.tinyexpression.parser.BooleanExpressionParser;
import org.unlaxer.tinyexpression.parser.EqualEqualParser;
import org.unlaxer.tinyexpression.parser.NotEqualParser;
import org.unlaxer.tinyexpression.parser.OrParser;
import org.unlaxer.tinyexpression.parser.XorParser;
public class BooleanExpressionBuilder implements TokenCodeBuilder {
static final BooleanExpressionBuilder SINGLETON = new BooleanExpressionBuilder();
@Override
public void build(SimpleJavaCodeBuilder builder, Token token,
TinyExpressionTokens tinyExpressionTokens) {
builder.append("(");
Parser parser = token.parser;
List filteredChildren = token.filteredChildren;
if(parser instanceof OrParser) {
build(builder, filteredChildren.get(1),tinyExpressionTokens);
builder.append("||");
build(builder, filteredChildren.get(2),tinyExpressionTokens);
}else if(parser instanceof AndParser) {
build(builder, filteredChildren.get(1),tinyExpressionTokens);
builder.append("&&");
build(builder, filteredChildren.get(2),tinyExpressionTokens);
}else if(parser instanceof XorParser) {
build(builder, filteredChildren.get(1),tinyExpressionTokens);
builder.append("^");
build(builder, filteredChildren.get(2),tinyExpressionTokens);
}else if(parser instanceof EqualEqualParser) {
build(builder, filteredChildren.get(1),tinyExpressionTokens);
builder.append("==");
build(builder, filteredChildren.get(2),tinyExpressionTokens);
}else if(parser instanceof NotEqualParser) {
build(builder, filteredChildren.get(1),tinyExpressionTokens);
builder.append("!=");
build(builder, filteredChildren.get(2),tinyExpressionTokens);
}else if(parser instanceof BooleanExpressionParser) {
filteredChildren.forEach(child->{
build(builder, child, tinyExpressionTokens);
});
}else {
BooleanBuilder.SINGLETON.build(builder, token , tinyExpressionTokens);
// }else {
// throw new IllegalArgumentException();
}
builder.append(")");
}
}