Java FileContents.lineIsBlank方法代码示例

import com.puppycrawl.tools.checkstyle.api.FileContents; //导入方法依赖的package包/类
/**
 * Returns length of code only without comments and blank lines.
 * @param openingBrace block opening brace
 * @param closingBrace block closing brace
 * @return number of lines with code for current block
 */
private int getLengthOfBlock(DetailAST openingBrace, DetailAST closingBrace) {
    int length = closingBrace.getLineNo() - openingBrace.getLineNo() + 1;

    if (!countEmpty) {
        final FileContents contents = getFileContents();
        final int lastLine = closingBrace.getLineNo();
        // lastLine - 1 is actual last line index. Last line is line with curly brace,
        // which is always not empty. So, we make it lastLine - 2 to cover last line that
        // actually may be empty.
        for (int i = openingBrace.getLineNo() - 1; i <= lastLine - 2; i++) {
            if (contents.lineIsBlank(i) || contents.lineIsComment(i)) {
                length--;
            }
        }
    }
    return length;
}
 

import com.puppycrawl.tools.checkstyle.api.FileContents; //导入方法依赖的package包/类
/**
 * Get list of empty lines.
 * @param ast the ast to check.
 * @return list of line numbers for empty lines.
 */
private List<Integer> getEmptyLines(DetailAST ast) {
    final DetailAST lastToken = ast.getLastChild().getLastChild();
    int lastTokenLineNo = 0;
    if (lastToken != null) {
        // -1 as count starts from 0
        // -2 as last token line cannot be empty, because it is a RCURLY
        lastTokenLineNo = lastToken.getLineNo() - 2;
    }
    final List<Integer> emptyLines = new ArrayList<Integer>();
    final FileContents fileContents = getFileContents();

    for (int lineNo = ast.getLineNo(); lineNo <= lastTokenLineNo; lineNo++) {
        if (fileContents.lineIsBlank(lineNo)) {
            emptyLines.add(lineNo);
        }
    }
    return emptyLines;
}
 

import com.puppycrawl.tools.checkstyle.api.FileContents; //导入方法依赖的package包/类
/**
 * Checks, whether there are empty lines within the specified line range. Line numbering is
 * started from 1 for parameter values
 * @param startLine number of the first line in the range
 * @param endLine number of the second line in the range
 * @return {@code true} if found any blank line within the range, {@code false}
 *         otherwise
 */
private boolean hasEmptyLine(int startLine, int endLine) {
    // Initial value is false - blank line not found
    boolean result = false;
    if (startLine <= endLine) {
        final FileContents fileContents = getFileContents();
        for (int line = startLine; line <= endLine; line++) {
            // Check, if the line is blank. Lines are numbered from 0, so subtract 1
            if (fileContents.lineIsBlank(line - 1)) {
                result = true;
                break;
            }
        }
    }
    return result;
}
 

import com.puppycrawl.tools.checkstyle.api.FileContents; //导入方法依赖的package包/类
/**
 * Determines the number semicolons in a method excluding those in
 * comments.
 * @param method Method to count
 * @return The number of semicolons in the method as an int
 */
private int countSemiColons(final DetailAST method) {
    final DetailAST openingbrace = method.findFirstToken(TokenTypes.SLIST);
    int count = 0;
    if (openingbrace != null) {
        final DetailAST closingbrace =
            openingbrace.findFirstToken(TokenTypes.RCURLY);
        final int lastline = closingbrace.getLineNo();
        final int firstline = openingbrace.getLineNo();
        final FileContents contents = this.getFileContents();
        for (int line = firstline - 1; line < lastline; line += 1) {
            if (!contents.lineIsBlank(line)
                && !contents.lineIsComment(line)
                && contents.getLine(line).contains(";")) {
                count += 1;
            }
        }
    }
    return count;
}
 

import com.puppycrawl.tools.checkstyle.api.FileContents; //导入方法依赖的package包/类
/**
 * Get list of empty lines.
 * @param ast the ast to check.
 * @return list of line numbers for empty lines.
 */
private List<Integer> getEmptyLines(DetailAST ast) {
    final DetailAST lastToken = ast.getLastChild().getLastChild();
    int lastTokenLineNo = 0;
    if (lastToken != null) {
        // -1 as count starts from 0
        // -2 as last token line cannot be empty, because it is a RCURLY
        lastTokenLineNo = lastToken.getLineNo() - 2;
    }
    final List<Integer> emptyLines = new ArrayList<>();
    final FileContents fileContents = getFileContents();

    for (int lineNo = ast.getLineNo(); lineNo <= lastTokenLineNo; lineNo++) {
        if (fileContents.lineIsBlank(lineNo)) {
            emptyLines.add(lineNo);
        }
    }
    return emptyLines;
}