}

type badPathError struct {
	path string
}

func (e *badPathError) Error() string {
	return fmt.Sprintf("malformed tile path %q", e.path)
}

// A TileReader reads tiles from a go.sum database log.
type TileReader interface {
	// Height returns the height of the available tiles.
	Height() int

	// ReadTiles returns the data for each requested tile.

        }
        File descriptorFile = fileResolver.resolve(path);
        if (descriptorFile == null || !descriptorFile.exists()) {
            return false;
        }
        try {
            FileReader reader = new FileReader(descriptorFile);
            readFrom(reader);
            return true;
        } catch (IOException e) {
            throw new UncheckedIOException(e);
        }
    }

// physicalRemaining implements fileState.physicalRemaining.
func (fr regFileReader) physicalRemaining() int64 {
	return fr.nb
}

// sparseFileReader is a fileReader for reading data from a sparse file entry.
type sparseFileReader struct {
	fr  fileReader  // Underlying fileReader
	sp  sparseHoles // Normalized list of sparse holes
	pos int64       // Current position in sparse file
}

 */
public class RegexBackedCSourceParser implements CSourceParser {
    @Override
    public IncludeDirectives parseSource(File sourceFile) {
        try (Reader fileReader = new FileReader(sourceFile)) {
            return parseSource(fileReader);
        } catch (Exception e) {
            throw new GradleException(String.format("Could not extract includes from source file %s.", sourceFile), e);
        }
    }

        given:
        def tokenSource = new DefaultCancellationTokenSource()
        def distUri = server.uri("cancelled-dist.zip")

        BufferedReader reader = new BufferedReader(new FileReader(distribution.binDistribution))
        def content = new byte[30000] // more than one progress tick in output
        for (i in 0..<content.length) {
            content[i++] = reader.read() as byte
        }

import org.intellij.lang.annotations.Language;
import org.junit.Assert;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.ObjectStreamException;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.nio.charset.StandardCharsets;

			testWriteTo{fileOps{int64(1), "abc", int64(2), "defgh", int64(4)}, 15, errUnrefData},
			testRead{100, "", errUnrefData},
			testRemaining{0, 5},
		},
	}}

	for i, v := range vectors {
		var fr fileReader
		switch maker := v.maker.(type) {
		case makeReg:
			r := testNonEmptyReader{strings.NewReader(maker.str)}
			fr = &regFileReader{r, maker.size}
		case makeSparse: