Java Code Examples for com.sun.tools.javac.parser.Parser#parseCompilationUnit()

The following examples show how to use com.sun.tools.javac.parser.Parser#parseCompilationUnit() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: JavaParser.java    From java-n-IDE-for-Android with Apache License 2.0 6 votes vote down vote up 
@Nullable
public JCTree.JCCompilationUnit parse(final String src) {
    if (!canParse) return null;
    long time = System.currentTimeMillis();

    SimpleJavaFileObject source = new SimpleJavaFileObject(URI.create("source"), JavaFileObject.Kind.SOURCE) {
        @Override
        public CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOException {
            return src;
        }
    };
    Log.instance(context).useSource(source);
    Parser parser = parserFactory.newParser(src,
        /*keepDocComments=*/ true,
        /*keepEndPos=*/ true,
        /*keepLineMap=*/ true);
    JCTree.JCCompilationUnit unit;
    unit = parser.parseCompilationUnit();
    unit.sourcefile = source;
    android.util.Log.d(TAG, "parse: time " + (System.currentTimeMillis() - time) + " ms");
    return unit;
}
Example 2
Source File: JavaParser.java    From javaide with GNU General Public License v3.0 6 votes vote down vote up 
@Nullable
public JCCompilationUnit parse(final String src) {
    if (!canParse) return null;
    long time = System.currentTimeMillis();

    SimpleJavaFileObject source = new SimpleJavaFileObject(URI.create("source"), JavaFileObject.Kind.SOURCE) {
        @Override
        public CharSequence getCharContent(boolean ignoreEncodingErrors) {
            return src;
        }
    };
    Log.instance(context).useSource(source);
    Parser parser = parserFactory.newParser(src,
            /*keepDocComments=*/ true,
            /*keepEndPos=*/ true,
            /*keepLineMap=*/ true);
    JCCompilationUnit unit;
    unit = parser.parseCompilationUnit();
    unit.sourcefile = source;
    return unit;
}
Example 3
Source File: TestLog.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 5 votes vote down vote up 
static void test(boolean genEndPos) throws IOException {
    Context context = new Context();

    Options options = Options.instance(context);
    options.put("diags", "%b:%s/%o/%e:%_%t%m|%p%m");

    Log log = Log.instance(context);
    log.multipleErrors = true;

    JavacFileManager.preRegister(context);
    ParserFactory pfac = ParserFactory.instance(context);

    final String text =
          "public class Foo {\n"
        + "  public static void main(String[] args) {\n"
        + "    if (args.length == 0)\n"
        + "      System.out.println(\"no args\");\n"
        + "    else\n"
        + "      System.out.println(args.length + \" args\");\n"
        + "  }\n"
        + "}\n";
    JavaFileObject fo = new StringJavaFileObject("Foo", text);
    log.useSource(fo);

    CharSequence cs = fo.getCharContent(true);
    Parser parser = pfac.newParser(cs, false, genEndPos, false);
    JCTree.JCCompilationUnit tree = parser.parseCompilationUnit();
    log.setEndPosTable(fo, tree.endPositions);

    TreeScanner ts = new LogTester(log, tree.endPositions);
    ts.scan(tree);

    check(log.nerrors, 4, "errors");
    check(log.nwarnings, 4, "warnings");
}
Example 4
Source File: TestLog.java    From hottub with GNU General Public License v2.0 5 votes vote down vote up 
static void test(boolean genEndPos) throws IOException {
    Context context = new Context();

    Options options = Options.instance(context);
    options.put("diags", "%b:%s/%o/%e:%_%t%m|%p%m");

    Log log = Log.instance(context);
    log.multipleErrors = true;

    JavacFileManager.preRegister(context);
    ParserFactory pfac = ParserFactory.instance(context);

    final String text =
          "public class Foo {\n"
        + "  public static void main(String[] args) {\n"
        + "    if (args.length == 0)\n"
        + "      System.out.println(\"no args\");\n"
        + "    else\n"
        + "      System.out.println(args.length + \" args\");\n"
        + "  }\n"
        + "}\n";
    JavaFileObject fo = new StringJavaFileObject("Foo", text);
    log.useSource(fo);

    CharSequence cs = fo.getCharContent(true);
    Parser parser = pfac.newParser(cs, false, genEndPos, false);
    JCTree.JCCompilationUnit tree = parser.parseCompilationUnit();
    log.setEndPosTable(fo, tree.endPositions);

    TreeScanner ts = new LogTester(log, tree.endPositions);
    ts.scan(tree);

    check(log.nerrors, 4, "errors");
    check(log.nwarnings, 4, "warnings");
}
Example 5
Source File: TestJavacParser.java    From javaide with GNU General Public License v3.0 5 votes vote down vote up 
public void test2() {
    Context context = new Context();
    DiagnosticCollector<JavaFileObject> diagnostics = new DiagnosticCollector<>();
    context.put(DiagnosticListener.class, diagnostics);
    Options.instance(context).put("allowStringFolding", "false");
    JCTree.JCCompilationUnit unit;
    JavacFileManager fileManager = new JavacFileManager(context, true, UTF_8);
    try {
        fileManager.setLocation(StandardLocation.PLATFORM_CLASS_PATH, ImmutableList.<File>of());
    } catch (IOException e) {
        // impossible
        throw new IOError(e);
    }
    SimpleJavaFileObject source =
            new SimpleJavaFileObject(URI.create("source"), JavaFileObject.Kind.SOURCE) {
                @Override
                public CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOException {
                    return src;
                }
            };
    Log.instance(context).useSource(source);
    ParserFactory parserFactory = ParserFactory.instance(context);
    Parser parser =
            parserFactory.newParser(
                    src,
        /*keepDocComments=*/ true,
        /*keepEndPos=*/ true,
        /*keepLineMap=*/ true);
    unit = parser.parseCompilationUnit();
    unit.sourcefile = source;
}
Example 6
Source File: TestLog.java    From openjdk-8 with GNU General Public License v2.0 5 votes vote down vote up 
static void test(boolean genEndPos) throws IOException {
    Context context = new Context();

    Options options = Options.instance(context);
    options.put("diags", "%b:%s/%o/%e:%_%t%m|%p%m");

    Log log = Log.instance(context);
    log.multipleErrors = true;

    JavacFileManager.preRegister(context);
    ParserFactory pfac = ParserFactory.instance(context);

    final String text =
          "public class Foo {\n"
        + "  public static void main(String[] args) {\n"
        + "    if (args.length == 0)\n"
        + "      System.out.println(\"no args\");\n"
        + "    else\n"
        + "      System.out.println(args.length + \" args\");\n"
        + "  }\n"
        + "}\n";
    JavaFileObject fo = new StringJavaFileObject("Foo", text);
    log.useSource(fo);

    CharSequence cs = fo.getCharContent(true);
    Parser parser = pfac.newParser(cs, false, genEndPos, false);
    JCTree.JCCompilationUnit tree = parser.parseCompilationUnit();
    log.setEndPosTable(fo, tree.endPositions);

    TreeScanner ts = new LogTester(log, tree.endPositions);
    ts.scan(tree);

    check(log.nerrors, 4, "errors");
    check(log.nwarnings, 4, "warnings");
}
Example 7
Source File: TestJavacParser.java    From javaide with GNU General Public License v3.0 5 votes vote down vote up 
public void test4() {
    Context context = new Context();
    DiagnosticCollector<JavaFileObject> diagnostics = new DiagnosticCollector<>();
    context.put(DiagnosticListener.class, diagnostics);
    Options.instance(context).put("allowStringFolding", "false");
    JCTree.JCCompilationUnit unit;
    JavacFileManager fileManager = new JavacFileManager(context, true, UTF_8);
    try {
        fileManager.setLocation(StandardLocation.PLATFORM_CLASS_PATH, ImmutableList.<File>of());
    } catch (IOException e) {
        // impossible
        throw new IOError(e);
    }
    SimpleJavaFileObject source =
            new SimpleJavaFileObject(URI.create("source"), JavaFileObject.Kind.SOURCE) {
                @Override
                public CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOException {
                    return src;
                }
            };
    Log.instance(context).useSource(source);
    ParserFactory parserFactory = ParserFactory.instance(context);
    Parser parser =
            parserFactory.newParser(
                    src,
        /*keepDocComments=*/ true,
        /*keepEndPos=*/ true,
        /*keepLineMap=*/ true);
    unit = parser.parseCompilationUnit();
    unit.sourcefile = source;
}
Example 8
Source File: TestJavacParser.java    From javaide with GNU General Public License v3.0 5 votes vote down vote up 
public void test1() {
    Context context = new Context();
    DiagnosticCollector<JavaFileObject> diagnostics = new DiagnosticCollector<>();
    context.put(DiagnosticListener.class, diagnostics);
    Options.instance(context).put("allowStringFolding", "false");
    JCTree.JCCompilationUnit unit;
    JavacFileManager fileManager = new JavacFileManager(context, true, UTF_8);
    try {
        fileManager.setLocation(StandardLocation.PLATFORM_CLASS_PATH, ImmutableList.<File>of());
    } catch (IOException e) {
        // impossible
        throw new IOError(e);
    }
    SimpleJavaFileObject source =
            new SimpleJavaFileObject(URI.create("source"), JavaFileObject.Kind.SOURCE) {
                @Override
                public CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOException {
                    return src;
                }
            };
    Log.instance(context).useSource(source);
    ParserFactory parserFactory = ParserFactory.instance(context);
    Parser parser =
            parserFactory.newParser(
                    src,
        /*keepDocComments=*/ true,
        /*keepEndPos=*/ true,
        /*keepLineMap=*/ true);
    unit = parser.parseCompilationUnit();
    unit.sourcefile = source;
}
Example 9
Source File: TestLog.java    From TencentKona-8 with GNU General Public License v2.0 5 votes vote down vote up 
static void test(boolean genEndPos) throws IOException {
    Context context = new Context();

    Options options = Options.instance(context);
    options.put("diags", "%b:%s/%o/%e:%_%t%m|%p%m");

    Log log = Log.instance(context);
    log.multipleErrors = true;

    JavacFileManager.preRegister(context);
    ParserFactory pfac = ParserFactory.instance(context);

    final String text =
          "public class Foo {\n"
        + "  public static void main(String[] args) {\n"
        + "    if (args.length == 0)\n"
        + "      System.out.println(\"no args\");\n"
        + "    else\n"
        + "      System.out.println(args.length + \" args\");\n"
        + "  }\n"
        + "}\n";
    JavaFileObject fo = new StringJavaFileObject("Foo", text);
    log.useSource(fo);

    CharSequence cs = fo.getCharContent(true);
    Parser parser = pfac.newParser(cs, false, genEndPos, false);
    JCTree.JCCompilationUnit tree = parser.parseCompilationUnit();
    log.setEndPosTable(fo, tree.endPositions);

    TreeScanner ts = new LogTester(log, tree.endPositions);
    ts.scan(tree);

    check(log.nerrors, 4, "errors");
    check(log.nwarnings, 4, "warnings");
}
Example 10
Source File: TestLog.java    From openjdk-jdk8u with GNU General Public License v2.0 5 votes vote down vote up 
static void test(boolean genEndPos) throws IOException {
    Context context = new Context();

    Options options = Options.instance(context);
    options.put("diags", "%b:%s/%o/%e:%_%t%m|%p%m");

    Log log = Log.instance(context);
    log.multipleErrors = true;

    JavacFileManager.preRegister(context);
    ParserFactory pfac = ParserFactory.instance(context);

    final String text =
          "public class Foo {\n"
        + "  public static void main(String[] args) {\n"
        + "    if (args.length == 0)\n"
        + "      System.out.println(\"no args\");\n"
        + "    else\n"
        + "      System.out.println(args.length + \" args\");\n"
        + "  }\n"
        + "}\n";
    JavaFileObject fo = new StringJavaFileObject("Foo", text);
    log.useSource(fo);

    CharSequence cs = fo.getCharContent(true);
    Parser parser = pfac.newParser(cs, false, genEndPos, false);
    JCTree.JCCompilationUnit tree = parser.parseCompilationUnit();
    log.setEndPosTable(fo, tree.endPositions);

    TreeScanner ts = new LogTester(log, tree.endPositions);
    ts.scan(tree);

    check(log.nerrors, 4, "errors");
    check(log.nwarnings, 4, "warnings");
}
Example 11
Source File: TestLog.java    From openjdk-8-source with GNU General Public License v2.0 5 votes vote down vote up 
static void test(boolean genEndPos) throws IOException {
    Context context = new Context();

    Options options = Options.instance(context);
    options.put("diags", "%b:%s/%o/%e:%_%t%m|%p%m");

    Log log = Log.instance(context);
    log.multipleErrors = true;

    JavacFileManager.preRegister(context);
    ParserFactory pfac = ParserFactory.instance(context);

    final String text =
          "public class Foo {\n"
        + "  public static void main(String[] args) {\n"
        + "    if (args.length == 0)\n"
        + "      System.out.println(\"no args\");\n"
        + "    else\n"
        + "      System.out.println(args.length + \" args\");\n"
        + "  }\n"
        + "}\n";
    JavaFileObject fo = new StringJavaFileObject("Foo", text);
    log.useSource(fo);

    CharSequence cs = fo.getCharContent(true);
    Parser parser = pfac.newParser(cs, false, genEndPos, false);
    JCTree.JCCompilationUnit tree = parser.parseCompilationUnit();
    log.setEndPosTable(fo, tree.endPositions);

    TreeScanner ts = new LogTester(log, tree.endPositions);
    ts.scan(tree);

    check(log.nerrors, 4, "errors");
    check(log.nwarnings, 4, "warnings");
}
Example 12
Source File: TestJavacParser.java    From java-n-IDE-for-Android with Apache License 2.0 5 votes vote down vote up 
public void test2() {
    Context context = new Context();
    DiagnosticCollector<JavaFileObject> diagnostics = new DiagnosticCollector<>();
    context.put(DiagnosticListener.class, diagnostics);
    Options.instance(context).put("allowStringFolding", "false");
    JCTree.JCCompilationUnit unit;
    JavacFileManager fileManager = new JavacFileManager(context, true, UTF_8);
    try {
        fileManager.setLocation(StandardLocation.PLATFORM_CLASS_PATH, ImmutableList.<File>of());
    } catch (IOException e) {
        // impossible
        throw new IOError(e);
    }
    SimpleJavaFileObject source =
            new SimpleJavaFileObject(URI.create("source"), JavaFileObject.Kind.SOURCE) {
                @Override
                public CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOException {
                    return src;
                }
            };
    Log.instance(context).useSource(source);
    ParserFactory parserFactory = ParserFactory.instance(context);
    Parser parser =
            parserFactory.newParser(
                    src,
        /*keepDocComments=*/ true,
        /*keepEndPos=*/ true,
        /*keepLineMap=*/ true);
    unit = parser.parseCompilationUnit();
    unit.sourcefile = source;
}
Example 13
Source File: TestJavacParser.java    From java-n-IDE-for-Android with Apache License 2.0 5 votes vote down vote up 
public void test3() {
    Context context = new Context();
    DiagnosticCollector<JavaFileObject> diagnostics = new DiagnosticCollector<>();
    context.put(DiagnosticListener.class, diagnostics);
    Options.instance(context).put("allowStringFolding", "false");
    JCTree.JCCompilationUnit unit;
    JavacFileManager fileManager = new JavacFileManager(context, true, UTF_8);
    try {
        fileManager.setLocation(StandardLocation.PLATFORM_CLASS_PATH, ImmutableList.<File>of());
    } catch (IOException e) {
        // impossible
        throw new IOError(e);
    }
    SimpleJavaFileObject source =
            new SimpleJavaFileObject(URI.create("source"), JavaFileObject.Kind.SOURCE) {
                @Override
                public CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOException {
                    return src;
                }
            };
    Log.instance(context).useSource(source);
    ParserFactory parserFactory = ParserFactory.instance(context);
    Parser parser =
            parserFactory.newParser(
                    src,
        /*keepDocComments=*/ true,
        /*keepEndPos=*/ true,
        /*keepLineMap=*/ true);
    unit = parser.parseCompilationUnit();
    unit.sourcefile = source;
}
Example 14
Source File: TestJavacParser.java    From java-n-IDE-for-Android with Apache License 2.0 5 votes vote down vote up 
public void test4() {
    Context context = new Context();
    DiagnosticCollector<JavaFileObject> diagnostics = new DiagnosticCollector<>();
    context.put(DiagnosticListener.class, diagnostics);
    Options.instance(context).put("allowStringFolding", "false");
    JCTree.JCCompilationUnit unit;
    JavacFileManager fileManager = new JavacFileManager(context, true, UTF_8);
    try {
        fileManager.setLocation(StandardLocation.PLATFORM_CLASS_PATH, ImmutableList.<File>of());
    } catch (IOException e) {
        // impossible
        throw new IOError(e);
    }
    SimpleJavaFileObject source =
            new SimpleJavaFileObject(URI.create("source"), JavaFileObject.Kind.SOURCE) {
                @Override
                public CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOException {
                    return src;
                }
            };
    Log.instance(context).useSource(source);
    ParserFactory parserFactory = ParserFactory.instance(context);
    Parser parser =
            parserFactory.newParser(
                    src,
        /*keepDocComments=*/ true,
        /*keepEndPos=*/ true,
        /*keepLineMap=*/ true);
    unit = parser.parseCompilationUnit();
    unit.sourcefile = source;
}
Example 15
Source File: TestJavacParser.java    From java-n-IDE-for-Android with Apache License 2.0 5 votes vote down vote up 
public void test1() {
    Context context = new Context();
    DiagnosticCollector<JavaFileObject> diagnostics = new DiagnosticCollector<>();
    context.put(DiagnosticListener.class, diagnostics);
    Options.instance(context).put("allowStringFolding", "false");
    JCTree.JCCompilationUnit unit;
    JavacFileManager fileManager = new JavacFileManager(context, true, UTF_8);
    try {
        fileManager.setLocation(StandardLocation.PLATFORM_CLASS_PATH, ImmutableList.<File>of());
    } catch (IOException e) {
        // impossible
        throw new IOError(e);
    }
    SimpleJavaFileObject source =
            new SimpleJavaFileObject(URI.create("source"), JavaFileObject.Kind.SOURCE) {
                @Override
                public CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOException {
                    return src;
                }
            };
    Log.instance(context).useSource(source);
    ParserFactory parserFactory = ParserFactory.instance(context);
    Parser parser =
            parserFactory.newParser(
                    src,
        /*keepDocComments=*/ true,
        /*keepEndPos=*/ true,
        /*keepLineMap=*/ true);
    unit = parser.parseCompilationUnit();
    unit.sourcefile = source;
}
Example 16
Source File: TestLog.java    From jdk8u60 with GNU General Public License v2.0 5 votes vote down vote up 
static void test(boolean genEndPos) throws IOException {
    Context context = new Context();

    Options options = Options.instance(context);
    options.put("diags", "%b:%s/%o/%e:%_%t%m|%p%m");

    Log log = Log.instance(context);
    log.multipleErrors = true;

    JavacFileManager.preRegister(context);
    ParserFactory pfac = ParserFactory.instance(context);

    final String text =
          "public class Foo {\n"
        + "  public static void main(String[] args) {\n"
        + "    if (args.length == 0)\n"
        + "      System.out.println(\"no args\");\n"
        + "    else\n"
        + "      System.out.println(args.length + \" args\");\n"
        + "  }\n"
        + "}\n";
    JavaFileObject fo = new StringJavaFileObject("Foo", text);
    log.useSource(fo);

    CharSequence cs = fo.getCharContent(true);
    Parser parser = pfac.newParser(cs, false, genEndPos, false);
    JCTree.JCCompilationUnit tree = parser.parseCompilationUnit();
    log.setEndPosTable(fo, tree.endPositions);

    TreeScanner ts = new LogTester(log, tree.endPositions);
    ts.scan(tree);

    check(log.nerrors, 4, "errors");
    check(log.nwarnings, 4, "warnings");
}
Example 17
Source File: Formatter.java    From java-n-IDE-for-Android with Apache License 2.0 4 votes vote down vote up 
/**
 * Construct a {@code Formatter} given a Java compilation unit. Parses the code; builds a {@link
 * JavaInput} and the corresponding {@link JavaOutput}.
 *
 * @param javaInput  the input, a Java compilation unit
 * @param javaOutput the {@link JavaOutput}
 * @param options    the {@link JavaFormatterOptions}
 */
static void format(
        final JavaInput javaInput, JavaOutput javaOutput, JavaFormatterOptions options) {
    Context context = new Context();
    DiagnosticCollector<JavaFileObject> diagnostics = new DiagnosticCollector<>();
    context.put(DiagnosticListener.class, diagnostics);
    Options.instance(context).put("allowStringFolding", "false");
    JCCompilationUnit unit;
    JavacFileManager fileManager = new JavacFileManager(context, true, UTF_8);
    try {
        fileManager.setLocation(StandardLocation.PLATFORM_CLASS_PATH, ImmutableList.<File>of());
    } catch (IOException e) {
        // impossible
        throw new IOError(e);
    }
    SimpleJavaFileObject source =
            new SimpleJavaFileObject(URI.create("source"), JavaFileObject.Kind.SOURCE) {
                @Override
                public CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOException {
                    return javaInput.getText();
                }
            };
    Log.instance(context).useSource(source);
    ParserFactory parserFactory = ParserFactory.instance(context);
    Parser parser =
            parserFactory.newParser(
                    javaInput.getText(),
        /*keepDocComments=*/ true,
        /*keepEndPos=*/ true,
        /*keepLineMap=*/ true);
    unit = parser.parseCompilationUnit();
    unit.sourcefile = source;

    javaInput.setCompilationUnit(unit);
    Iterable<Diagnostic<? extends JavaFileObject>> errorDiagnostics =
            Iterables.filter(diagnostics.getDiagnostics(), ERROR_DIAGNOSTIC);
    if (!Iterables.isEmpty(errorDiagnostics)) {
        throw FormattingError.fromJavacDiagnostics(errorDiagnostics);
    }
    OpsBuilder builder = new OpsBuilder(javaInput, javaOutput);
    // Output the compilation unit.
    new JavaInputAstVisitor(builder, options.indentationMultiplier()).scan(unit, null);
    builder.sync(javaInput.getText().length());
    builder.drain();
    Doc doc = new DocBuilder().withOps(builder.build()).build();
    doc.computeBreaks(
            javaOutput.getCommentsHelper(), options.maxLineLength(), new Doc.State(+0, 0));
    doc.write(javaOutput);
    javaOutput.flush();
}
Example 18
Source File: ParserTest.java    From javaide with GNU General Public License v3.0 4 votes vote down vote up 
public void test1() {
    final String src = "package com.duy;\n" +
            "\n" +
            "import java.util.ArrayList;\n" +
            "/** * Created by Duy on 17-Jul-17. */\n" +
            "public class Main {\n" +
            "    public static void main(String[] args) {\n" +
            "        ArrayList list = new ArrayList();\n" +
            "        for (int i = 0; i < 1000; i++) {\n" +
            "            list.add(i);\n" +
            "        }\n" +
            "    }\n" +
            "\n";
    Context context = new Context();
    DiagnosticCollector<JavaFileObject> diagnostics = new DiagnosticCollector<>();
    context.put(DiagnosticListener.class, diagnostics);
    Options.instance(context).put("allowStringFolding", "false");
    JCTree.JCCompilationUnit unit;
    JavacFileManager fileManager = new JavacFileManager(context, true, UTF_8);
    try {
        fileManager.setLocation(StandardLocation.PLATFORM_CLASS_PATH, ImmutableList.<File>of());
    } catch (IOException e) {
        // impossible
        throw new IOError(e);
    }
    SimpleJavaFileObject source =
            new SimpleJavaFileObject(URI.create("source"), JavaFileObject.Kind.SOURCE) {
                @Override
                public CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOException {
                    return src;
                }
            };
    Log.instance(context).useSource(source);
    ParserFactory parserFactory = ParserFactory.instance(context);
    Parser parser =
            parserFactory.newParser(
                    src,
        /*keepDocComments=*/ true,
        /*keepEndPos=*/ true,
        /*keepLineMap=*/ true);
    unit = parser.parseCompilationUnit();
    System.out.println(unit.getImports());

}
Example 19
Source File: Formatter.java    From javaide with GNU General Public License v3.0 4 votes vote down vote up 
/**
 * Construct a {@code Formatter} given a Java compilation unit. Parses the code; builds a {@link
 * JavaInput} and the corresponding {@link JavaOutput}.
 *
 * @param javaInput  the input, a Java compilation unit
 * @param javaOutput the {@link JavaOutput}
 * @param options    the {@link JavaFormatterOptions}
 */
static void format(
        final JavaInput javaInput, JavaOutput javaOutput, JavaFormatterOptions options) {
    Context context = new Context();
    DiagnosticCollector<JavaFileObject> diagnostics = new DiagnosticCollector<>();
    context.put(DiagnosticListener.class, diagnostics);
    Options.instance(context).put("allowStringFolding", "false");
    JCCompilationUnit unit;
    JavacFileManager fileManager = new JavacFileManager(context, true, UTF_8);
    try {
        fileManager.setLocation(StandardLocation.PLATFORM_CLASS_PATH, ImmutableList.<File>of());
    } catch (IOException e) {
        // impossible
        throw new IOError(e);
    }
    SimpleJavaFileObject source =
            new SimpleJavaFileObject(URI.create("source"), JavaFileObject.Kind.SOURCE) {
                @Override
                public CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOException {
                    return javaInput.getText();
                }
            };
    Log.instance(context).useSource(source);
    ParserFactory parserFactory = ParserFactory.instance(context);
    Parser parser =
            parserFactory.newParser(
                    javaInput.getText(),
        /*keepDocComments=*/ true,
        /*keepEndPos=*/ true,
        /*keepLineMap=*/ true);
    unit = parser.parseCompilationUnit();
    unit.sourcefile = source;

    javaInput.setCompilationUnit(unit);
    Iterable<Diagnostic<? extends JavaFileObject>> errorDiagnostics =
            Iterables.filter(diagnostics.getDiagnostics(), ERROR_DIAGNOSTIC);
    if (!Iterables.isEmpty(errorDiagnostics)) {
        throw FormattingError.fromJavacDiagnostics(errorDiagnostics);
    }
    OpsBuilder builder = new OpsBuilder(javaInput, javaOutput);
    // Output the compilation unit.
    new JavaInputAstVisitor(builder, options.indentationMultiplier()).scan(unit, null);
    builder.sync(javaInput.getText().length());
    builder.drain();
    Doc doc = new DocBuilder().withOps(builder.build()).build();
    doc.computeBreaks(
            javaOutput.getCommentsHelper(), options.maxLineLength(), new Doc.State(+0, 0));
    doc.write(javaOutput);
    javaOutput.flush();
}
Example 20
Source File: TestLog.java    From openjdk-jdk9 with GNU General Public License v2.0 4 votes vote down vote up 
static void test(boolean genEndPos) throws Exception {
    Context context = new Context();

    Options options = Options.instance(context);
    options.put("diags", "%b:%s/%o/%e:%_%t%m|%p%m");

    Log log = Log.instance(context);
    Factory diagnosticFactory = JCDiagnostic.Factory.instance(context);
    Field defaultErrorFlagsField =
            JCDiagnostic.Factory.class.getDeclaredField("defaultErrorFlags");

    defaultErrorFlagsField.setAccessible(true);

    Set<DiagnosticFlag> defaultErrorFlags =
            (Set<DiagnosticFlag>) defaultErrorFlagsField.get(diagnosticFactory);

    defaultErrorFlags.add(DiagnosticFlag.MULTIPLE);

    JavacFileManager.preRegister(context);
    ParserFactory pfac = ParserFactory.instance(context);

    final String text =
          "public class Foo {\n"
        + "  public static void main(String[] args) {\n"
        + "    if (args.length == 0)\n"
        + "      System.out.println(\"no args\");\n"
        + "    else\n"
        + "      System.out.println(args.length + \" args\");\n"
        + "  }\n"
        + "}\n";
    JavaFileObject fo = new StringJavaFileObject("Foo", text);
    log.useSource(fo);

    CharSequence cs = fo.getCharContent(true);
    Parser parser = pfac.newParser(cs, false, genEndPos, false);
    JCTree.JCCompilationUnit tree = parser.parseCompilationUnit();
    log.setEndPosTable(fo, tree.endPositions);

    TreeScanner ts = new LogTester(log, tree.endPositions);
    ts.scan(tree);

    check(log.nerrors, 4, "errors");
    check(log.nwarnings, 4, "warnings");
}