org.unlaxer.tinyexpression.evaluator.javacode.BooleanExpressionBuilder Maven / Gradle / Ivy

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TinyExpression implemented with Unlaxer

There is a newer version: 1.4.4

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(")");
	}
}