Java Code Examples for com.sun.tools.javac.parser.ParserFactory#instance()
The following examples show how to use
com.sun.tools.javac.parser.ParserFactory#instance() .
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Example 1
| Source File: JavacTaskImpl.java From jdk8u60 with GNU General Public License v2.0 | 6 votes |
|
/**
* For internal use only. This method will be
* removed without warning.
*/
public Type parseType(String expr, TypeElement scope) {
if (expr == null || expr.equals(""))
throw new IllegalArgumentException();
compiler = JavaCompiler.instance(context);
JavaFileObject prev = compiler.log.useSource(null);
ParserFactory parserFactory = ParserFactory.instance(context);
Attr attr = Attr.instance(context);
try {
CharBuffer buf = CharBuffer.wrap((expr+"\u0000").toCharArray(), 0, expr.length());
Parser parser = parserFactory.newParser(buf, false, false, false);
JCTree tree = parser.parseType();
return attr.attribType(tree, (Symbol.TypeSymbol)scope);
} finally {
compiler.log.useSource(prev);
}
}
Example 2
| Source File: JavacTaskImpl.java From openjdk-8 with GNU General Public License v2.0 | 6 votes |
|
/**
* For internal use only. This method will be
* removed without warning.
*/
public Type parseType(String expr, TypeElement scope) {
if (expr == null || expr.equals(""))
throw new IllegalArgumentException();
compiler = JavaCompiler.instance(context);
JavaFileObject prev = compiler.log.useSource(null);
ParserFactory parserFactory = ParserFactory.instance(context);
Attr attr = Attr.instance(context);
try {
CharBuffer buf = CharBuffer.wrap((expr+"\u0000").toCharArray(), 0, expr.length());
Parser parser = parserFactory.newParser(buf, false, false, false);
JCTree tree = parser.parseType();
return attr.attribType(tree, (Symbol.TypeSymbol)scope);
} finally {
compiler.log.useSource(prev);
}
}
Example 3
| Source File: JavacTaskImpl.java From java-n-IDE-for-Android with Apache License 2.0 | 6 votes |
|
/**
* For internal use only. This method will be
* removed without warning.
*/
public Type parseType(String expr, TypeElement scope) {
if (expr == null || expr.equals(""))
throw new IllegalArgumentException();
compiler = JavaCompiler.instance(context);
JavaFileObject prev = compiler.log.useSource(null);
ParserFactory parserFactory = ParserFactory.instance(context);
Attr attr = Attr.instance(context);
try {
CharBuffer buf = CharBuffer.wrap((expr+"\u0000").toCharArray(), 0, expr.length());
Parser parser = parserFactory.newParser(buf, false, false, false);
JCTree tree = parser.parseType();
return attr.attribType(tree, (TypeSymbol)scope);
} finally {
compiler.log.useSource(prev);
}
}
Example 4
| Source File: JavacTaskImpl.java From lua-for-android with BSD 3-Clause "New" or "Revised" License | 6 votes |
|
/**
* For internal use only. This method will be
* removed without warning.
* @param expr the type expression to be analyzed
* @param scope the scope in which to analyze the type expression
* @return the type
* @throws IllegalArgumentException if the type expression of null or empty
*/
public Type parseType(String expr, TypeElement scope) {
if (expr == null || expr.equals(""))
throw new IllegalArgumentException();
compiler = JavaCompiler.instance(context);
JavaFileObject prev = compiler.log.useSource(null);
ParserFactory parserFactory = ParserFactory.instance(context);
Attr attr = Attr.instance(context);
try {
CharBuffer buf = CharBuffer.wrap((expr+"\u0000").toCharArray(), 0, expr.length());
Parser parser = parserFactory.newParser(buf, false, false, false);
JCTree tree = parser.parseType();
return attr.attribType(tree, (Symbol.TypeSymbol)scope);
} finally {
compiler.log.useSource(prev);
}
}
Example 5
| Source File: TestJavacParser.java From java-n-IDE-for-Android with Apache License 2.0 | 5 votes |
|
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: TestJavacParser.java From javaide with GNU General Public License v3.0 | 5 votes |
|
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 7
| Source File: TestLog.java From openjdk-8-source with GNU General Public License v2.0 | 5 votes |
|
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 8
| Source File: TreePrunerTest.java From bazel with Apache License 2.0 | 5 votes |
|
JCCompilationUnit parseLines(String... lines) {
Context context = new Context();
try (JavacFileManager fm = new JavacFileManager(context, true, UTF_8)) {
ParserFactory parserFactory = ParserFactory.instance(context);
String input = Joiner.on('\n').join(lines);
JavacParser parser =
parserFactory.newParser(
input, /*keepDocComments=*/ false, /*keepEndPos=*/ false, /*keepLineMap=*/ false);
return parser.parseCompilationUnit();
} catch (IOException e) {
throw new IOError(e);
}
}
Example 9
| Source File: DocTreeMaker.java From openjdk-jdk9 with GNU General Public License v2.0 | 5 votes |
|
/** Create a tree maker with NOPOS as initial position.
*/
protected DocTreeMaker(Context context) {
context.put(treeMakerKey, this);
diags = JCDiagnostic.Factory.instance(context);
this.pos = Position.NOPOS;
trees = JavacTrees.instance(context);
referenceParser = new ReferenceParser(ParserFactory.instance(context));
sentenceBreakTags = EnumSet.of(H1, H2, H3, H4, H5, H6, PRE, P);
}
Example 10
| Source File: TestJavacParser.java From javaide with GNU General Public License v3.0 | 5 votes |
|
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 11
| Source File: JavaParser.java From javaide with GNU General Public License v3.0 | 5 votes |
|
public JavaParser() {
context = new Context();
diagnostics = new DiagnosticCollector<>();
context.put(DiagnosticListener.class, diagnostics);
Options.instance(context).put("allowStringFolding", "false");
JavacFileManager fileManager = new JavacFileManager(context, true, UTF_8);
try {
fileManager.setLocation(StandardLocation.PLATFORM_CLASS_PATH, ImmutableList.<File>of());
} catch (IOException e) {
// impossible
canParse = false;
}
parserFactory = ParserFactory.instance(context);
}
Example 12
| Source File: Utilities.java From netbeans with Apache License 2.0 | 5 votes |
|
private static JCStatement parseStatement(Context context, CharSequence stmt, SourcePositions[] pos, final List<Diagnostic<? extends JavaFileObject>> errors) {
if (stmt == null || (pos != null && pos.length != 1))
throw new IllegalArgumentException();
JavaCompiler compiler = JavaCompiler.instance(context);
JavaFileObject prev = compiler.log.useSource(new DummyJFO());
Log.DiagnosticHandler discardHandler = new Log.DiscardDiagnosticHandler(compiler.log) {
@Override
public void report(JCDiagnostic diag) {
errors.add(diag);
}
};
try {
CharBuffer buf = CharBuffer.wrap((stmt+"\u0000").toCharArray(), 0, stmt.length());
ParserFactory factory = ParserFactory.instance(context);
ScannerFactory scannerFactory = ScannerFactory.instance(context);
Names names = Names.instance(context);
Parser parser = newParser(context, (NBParserFactory) factory, scannerFactory.newScanner(buf, false), false, false, CancelService.instance(context), names);
if (parser instanceof JavacParser) {
if (pos != null)
pos[0] = new ParserSourcePositions((JavacParser)parser);
return parser.parseStatement();
}
return null;
} finally {
compiler.log.useSource(prev);
compiler.log.popDiagnosticHandler(discardHandler);
}
}
Example 13
| Source File: TestJavacParser.java From java-n-IDE-for-Android with Apache License 2.0 | 5 votes |
|
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 |
|
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 15
| Source File: TestLog.java From hottub with GNU General Public License v2.0 | 5 votes |
|
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 16
| Source File: Formatter.java From java-n-IDE-for-Android with Apache License 2.0 | 4 votes |
|
/**
* 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 17
| Source File: ParserTest.java From javaide with GNU General Public License v3.0 | 4 votes |
|
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 18
| Source File: TestLog.java From openjdk-jdk9 with GNU General Public License v2.0 | 4 votes |
|
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");
}
Example 19
| Source File: JavaCompiler.java From java-n-IDE-for-Android with Apache License 2.0 | 4 votes |
|
/**
* Construct a new compiler using a shared context.
*/
public JavaCompiler(Context context) {
this.context = context;
context.put(compilerKey, this);
// if fileManager not already set, register the JavacFileManager to be used
if (context.get(JavaFileManager.class) == null)
JavacFileManager.preRegister(context);
names = Names.instance(context);
log = Log.instance(context);
diagFactory = JCDiagnostic.Factory.instance(context);
reader = ClassReader.instance(context);
make = TreeMaker.instance(context);
writer = ClassWriter.instance(context);
enter = Enter.instance(context);
todo = Todo.instance(context);
fileManager = context.get(JavaFileManager.class);
parserFactory = ParserFactory.instance(context);
try {
// catch completion problems with predefineds
syms = Symtab.instance(context);
} catch (CompletionFailure ex) {
// inlined Check.completionError as it is not initialized yet
log.error("cant.access", ex.sym, ex.getDetailValue());
if (ex instanceof ClassReader.BadClassFile)
throw new Abort();
}
source = Source.instance(context);
attr = Attr.instance(context);
chk = Check.instance(context);
gen = Gen.instance(context);
flow = Flow.instance(context);
transTypes = TransTypes.instance(context);
lower = Lower.instance(context);
annotate = Annotate.instance(context);
types = Types.instance(context);
taskListener = context.get(TaskListener.class);
reader.sourceCompleter = this;
options = Options.instance(context);
verbose = options.isSet(VERBOSE);
sourceOutput = options.isSet(PRINTSOURCE); // used to be -s
stubOutput = options.isSet("-stubs");
relax = options.isSet("-relax");
printFlat = options.isSet("-printflat");
attrParseOnly = options.isSet("-attrparseonly");
encoding = options.get(ENCODING);
lineDebugInfo = options.isUnset(G_CUSTOM) ||
options.isSet(G_CUSTOM, "lines");
genEndPos = options.isSet(XJCOV) ||
context.get(DiagnosticListener.class) != null;
devVerbose = options.isSet("dev");
processPcks = options.isSet("process.packages");
werror = options.isSet(WERROR);
if (source.compareTo(Source.DEFAULT) < 0) {
if (options.isUnset(XLINT_CUSTOM, "-" + LintCategory.OPTIONS.option)) {
if (fileManager instanceof BaseFileManager) {
if (((BaseFileManager) fileManager).isDefaultBootClassPath())
log.warning(LintCategory.OPTIONS, "source.no.bootclasspath", source.name);
}
}
}
verboseCompilePolicy = options.isSet("verboseCompilePolicy");
if (attrParseOnly)
compilePolicy = CompilePolicy.ATTR_ONLY;
else
compilePolicy = CompilePolicy.decode(options.get("compilePolicy"));
implicitSourcePolicy = ImplicitSourcePolicy.decode(options.get("-implicit"));
completionFailureName =
options.isSet("failcomplete")
? names.fromString(options.get("failcomplete"))
: null;
shouldStopPolicy =
options.isSet("shouldStopPolicy")
? CompileState.valueOf(options.get("shouldStopPolicy"))
: null;
if (options.isUnset("oldDiags"))
log.setDiagnosticFormatter(RichDiagnosticFormatter.instance(context));
}
Example 20
| Source File: Formatter.java From javaide with GNU General Public License v3.0 | 4 votes |
|
/**
* 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();
}
