com.github.leeonky.interpreter.TokenScanner Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of interpreter-core Show documentation

interpreter-core

The newest version!

package com.github.leeonky.interpreter;

import java.util.Optional;
import java.util.function.Function;

public interface TokenScanner, E extends Expression,
        O extends Operator, P extends Procedure> {
    static , N extends Node, C extends RuntimeContext,
            O extends Operator, S extends Procedure> Mandatory tokenScanner(
            boolean trimStart, TriplePredicate endsWith) {
        return sourceCode -> sourceCode.fetchToken(trimStart, endsWith);
    }

    Optional scan(SourceCode sourceCode);

    default NodeParser nodeParser(Function mapper) {
        return procedure -> scan(procedure.getSourceCode()).map(token ->
                mapper.apply(token).setPositionBegin(token.getPosition()));
    }

    interface Mandatory, E extends Expression,
            O extends Operator, P extends Procedure> {
        Token scan(SourceCode sourceCode);

        default NodeParser.Mandatory nodeParser(Function mapper) {
            return procedure -> {
                Token token = scan(procedure.getSourceCode());
                return mapper.apply(token).setPositionBegin(token.getPosition());
            };
        }
    }
}