Examples with StringReader java.io.StringReader used on opensource projects

Example 51 with StringReader

use of java.io.StringReader in project j2objc by google.

the class SourceBuilder method reindent.

/**
   * Fix line indention, based on brace count.
   */
public String reindent(String code) {
    try {
        // Remove indention from each line.
        StringBuffer sb = new StringBuffer();
        LineReader lr = new LineReader(new StringReader(code));
        String line = lr.readLine();
        while (line != null) {
            sb.append(line.trim());
            line = lr.readLine();
            if (line != null) {
                sb.append('\n');
            }
        }
        String strippedCode = sb.toString();
        // Now indent it again.
        int indent = indention * DEFAULT_INDENTION;
        // reset buffer
        sb.setLength(0);
        lr = new LineReader(new StringReader(strippedCode));
        line = lr.readLine();
        while (line != null) {
            if (line.startsWith("}")) {
                indent -= DEFAULT_INDENTION;
            }
            if (!line.startsWith("#line")) {
                sb.append(pad(indent));
            }
            sb.append(line);
            if (line.endsWith("{")) {
                indent += DEFAULT_INDENTION;
            }
            line = lr.readLine();
            if (line != null) {
                sb.append('\n');
            }
        }
        return sb.toString();
    } catch (IOException e) {
        // Should never happen with string readers.
        throw new AssertionError(e);
    }
}

Example 52 with StringReader

use of java.io.StringReader in project groovy-core by groovy.

the class SourceBufferTest method getSourceBuffer.

private SourceBuffer getSourceBuffer(String text) throws Exception {
    SourceBuffer buffer = new SourceBuffer();
    Reader reader = new UnicodeEscapingReader(new StringReader(text), buffer);
    while (reader.read() != -1) {
    // empty loop
    // - read all characters till the end of the reader
    // UnicodeEscapingReader has side effects of
    // filling the buffer
    }
    return buffer;
}

Example 53 with StringReader

use of java.io.StringReader in project groovy-core by groovy.

the class CompositeVisitorTest method assertCompositeTransparency.

private void assertCompositeTransparency(String input) throws Exception {
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    GroovyRecognizer parser;
    SourceBuffer sourceBuffer = new SourceBuffer();
    UnicodeEscapingReader unicodeReader = new UnicodeEscapingReader(new StringReader(input), sourceBuffer);
    GroovyLexer lexer = new GroovyLexer(unicodeReader);
    unicodeReader.setLexer(lexer);
    parser = GroovyRecognizer.make(lexer);
    parser.setSourceBuffer(sourceBuffer);
    String[] tokenNames = parser.getTokenNames();
    parser.compilationUnit();
    AST ast = parser.getAST();
    // determine direct result
    Visitor directVisitor = new SourcePrinter(new PrintStream(baos), tokenNames, false);
    AntlrASTProcessor traverser = new SourceCodeTraversal(directVisitor);
    traverser.process(ast);
    String directResult = new String(baos.toByteArray());
    // determine composite result
    baos.reset();
    List wrappedVisitors = new ArrayList();
    wrappedVisitors.add(directVisitor);
    Visitor compositeVisitor = new CompositeVisitor(wrappedVisitors);
    traverser = new SourceCodeTraversal(compositeVisitor);
    traverser.process(ast);
    String compositeResult = new String(baos.toByteArray());
    assertEquals(directResult, compositeResult);
}

Example 54 with StringReader

use of java.io.StringReader in project groovy-core by groovy.

the class TraversalTestHelper method traverse.

// todo - the visitor doesn't always take PrintStreams as constructor params!  Could be a more reusable implementation than this...
public String traverse(String input, Class visitorClass, Boolean extraParam) throws Exception {
    if (!Visitor.class.isAssignableFrom(visitorClass)) {
        throw new RuntimeException("Invalid class for traversal: " + visitorClass.getName());
    }
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    GroovyRecognizer parser;
    SourceBuffer sourceBuffer = new SourceBuffer();
    UnicodeEscapingReader unicodeReader = new UnicodeEscapingReader(new StringReader(input), sourceBuffer);
    GroovyLexer lexer = new GroovyLexer(unicodeReader);
    unicodeReader.setLexer(lexer);
    parser = GroovyRecognizer.make(lexer);
    parser.setSourceBuffer(sourceBuffer);
    String[] tokenNames = parser.getTokenNames();
    parser.compilationUnit();
    AST ast = parser.getAST();
    Class[] paramTypes;
    Object[] params;
    if (extraParam == null) {
        paramTypes = new Class[] { PrintStream.class, String[].class };
        params = new Object[] { new PrintStream(baos), tokenNames };
    } else {
        paramTypes = new Class[] { PrintStream.class, String[].class, Boolean.TYPE };
        params = new Object[] { new PrintStream(baos), tokenNames, extraParam };
    }
    Constructor constructor = visitorClass.getConstructor(paramTypes);
    Visitor visitor = (Visitor) constructor.newInstance(params);
    AntlrASTProcessor traverser = new SourceCodeTraversal(visitor);
    traverser.process(ast);
    return new String(baos.toByteArray());
}

Example 55 with StringReader

use of java.io.StringReader in project groovy-core by groovy.

the class AnnotationSourceParsingTest method testMultiLineAttributes.

public void testMultiLineAttributes() {
    StringReader reader = new StringReader("class OtherSection\n" + "{\n" + "    @CollectionOfElements\n" + "    @JoinTable\n" + "    (\n" + "        table=@Table(name=\"gaga\"),\n" + "        joinColumns = @JoinColumn(name=\"BoyId\")\n" + "    )\n" + "    @Column(name=\"favoritepoupon\", \n" + "nullable=false)\n" + "    Set<String> questions = new HashSet<String> ()\n\n" + "}");
    parse("testMultiLineAttributes", reader);
}