package chocopy.common.astnodes;

import chocopy.common.analysis.NodeAnalyzer;
import com.fasterxml.jackson.annotation.JsonIgnore;
import java_cup.runtime.ComplexSymbolFactory.Location;

import java.util.ArrayList;
import java.util.List;

/**
 * An entire ChocoPy program.
 */
public class Program extends Node {

    /**
     * Initial variable, class, and function declarations.
     */
    public final List<Declaration> declarations;
    /**
     * Trailing statements.
     */
    public final List<Stmt> statements;
    /**
     * Accumulated errors.
     */
    public final Errors errors;

    /**
     * The AST for the program
     * DECLARATIONS
     * STATEMENTS
     * spanning source locations [LEFT..RIGHT].
     * <p>
     * ERRORS is the container for all error messages applying to the
     * program.
     */
    public Program(Location left, Location right,
                   List<Declaration> declarations, List<Stmt> statements,
                   Errors errors) {
        super(left, right);
        this.declarations = declarations;
        this.statements = statements;
        if (errors == null) {
            this.errors = new Errors(new ArrayList<>());
        } else {
            this.errors = errors;
        }
    }

    public <T> T dispatch(NodeAnalyzer<T> analyzer) {
        return analyzer.analyze(this);
    }

    /**
     * Returns true iff there is at least one error in the program.
     */
    @JsonIgnore
    public boolean hasErrors() {
        return errors.hasErrors();
    }

    /**
     * A convenience method returning the list of all CompilerErrors for
     * this program.
     */
    @JsonIgnore
    public List<CompilerError> getErrorList() {
        return errors.errors;
    }
}