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Diffstat (limited to 'sources/scalac/Global.java')
| -rw-r--r-- | sources/scalac/Global.java | 706 |
1 files changed, 0 insertions, 706 deletions
diff --git a/sources/scalac/Global.java b/sources/scalac/Global.java deleted file mode 100644 index 801883ad25..0000000000 --- a/sources/scalac/Global.java +++ /dev/null @@ -1,706 +0,0 @@ -/* ____ ____ ____ ____ ______ *\ -** / __// __ \/ __// __ \/ ____/ SOcos COmpiles Scala ** -** __\_ \/ /_/ / /__/ /_/ /\_ \ (c) 2002, LAMP/EPFL ** -** /_____/\____/\___/\____/____/ ** -** ** -** $Id$ -\* */ - -package scalac; - -import ch.epfl.lamp.util.CodePrinter; - -import java.io.FileNotFoundException; -import java.io.FileOutputStream; -import java.io.OutputStream; -import java.io.PrintWriter; -import java.io.IOException; -import java.io.OutputStream; -import java.nio.charset.Charset; -import java.nio.charset.CharsetDecoder; -import java.nio.charset.IllegalCharsetNameException; -import java.nio.charset.UnsupportedCharsetException; -import java.util.*; - -import scala.tools.util.AbstractFile; -import scala.tools.util.ClassPath; -import scala.tools.util.Position; -import scala.tools.util.SourceFile; -import scala.tools.util.SourceReader; -import scala.tools.util.Reporter; -import scala.tools.util.Timer; -import scala.tools.util.DummyTimer; -import scala.tools.util.ReporterTimer; - -import scalac.ast.*; -import scalac.ast.parser.*; -import scalac.ast.printer.TreePrinter; -import scalac.atree.AConstant; -import scalac.atree.ATreePrinter; -import scalac.backend.Primitives; -// !!! <<< Interpreter stuff -import scalac.symtab.*; -// !!! >>> Interpreter stuff -import scalac.symtab.Definitions; -import scalac.symtab.classfile.PackageParser; -import scalac.symtab.classfile.CLRPackageParser; -import scalac.typechecker.AnalyzerPhase; -import scalac.typechecker.Infer; -import scalac.transformer.ICodePhase; -import scalac.util.*; - -/** The global environment of a compiler run - * - * @author Matthias Zenger - * @version 1.0 - */ -public abstract class Global { - - public static Global instance; - - /** global options - */ - public final boolean noimports; - public final boolean nopredefs; - public final boolean separate; - //public final boolean optimize; - public final boolean debug; - public final boolean debuginfo; - public final boolean explaintypes; - public final boolean uniqid; - public final boolean newMatch; - public final boolean xmlPreserveWS; - public final boolean runTimeTypes; - - public final boolean printtypes; - public final boolean printtokens; - - public final String outpath; - public final String encoding; - public final String target; - - /** the message reporter - */ - public final Reporter reporter; - - /** the timer - */ - public final Timer timer; - - /** the source file charset - */ - private final Charset charset; - - /** the source file decoder - */ - private final CharsetDecoder decoder; - - /** the source file reader - */ - private final SourceReader reader; - - /** the class path - */ - public final ClassPath classPath; - - /** the global tree factory - */ - public final TreeFactory make; - - /** the tree generator - */ - public final TreeGen treeGen; - - /** the global tree printer - */ - public final PrintWriter writer; - public final TreePrinter treePrinter; - - /** documentation comments of symbols - */ - public final Map/*<Symbol, String>*/ mapSymbolComment = new HashMap(); - - /** attributes of symbols - */ - protected final Map/*<Symbol, AttributeInfo>*/ mapSymbolAttr = new HashMap(); - - /** views associated with (upper-bounded) type parameters - */ - public final Map/*<Symbol, Symbol>*/ viewOfTypeParam = new HashMap(); - - /** Pickled info of top-level symbols - */ - public final Map/*<Symbol, Pickle>*/ symdata = new HashMap(); - - - /** The compiler command arguments - */ - public final CompilerCommand args; - - /** The set of currently compiled top-level symbols - */ - public HashMap/*<Symbol,Sourcefile>*/ compiledNow = new HashMap(); - - /** The set of already compiled sourcefiles - */ - private HashSet/*<SourceFile>*/ compiledUnits = new HashSet(); - - /** the current phase - */ - public Phase currentPhase; - - /** the global definitions - */ - public Definitions definitions; - - /** the global primitives - */ - public final Primitives primitives; - - /** compilation phases. - */ - public final CompilerPhases PHASE; - - /** The current compilation loop or null */ - private CompilationLoop loop; - - /** compilation targets - */ - public static final String TARGET_INT; - public static final String TARGET_JVM; - public static final String TARGET_MSIL; - public static final String TARGET_JVMFROMICODE; - - public static final String[] TARGETS = new String[] { - TARGET_INT = "int", - TARGET_JVM = "jvm", - TARGET_MSIL = "msil", - TARGET_JVMFROMICODE = "jvmfromicode" - }; - - /** tree printers - */ - public static final String PRINTER_TEXT; - public static final String PRINTER_HTML; - public static final String PRINTER_SWING; - - public static final String[] PRINTERS = new String[] { - PRINTER_TEXT = "text", - PRINTER_HTML = "html", - PRINTER_SWING = "swing", - }; - - public static Timer getTimer(Reporter reporter) { - return reporter.verbose() - ? (Timer)new ReporterTimer(reporter) - : (Timer)DummyTimer.object; - } - - /** hooks for installing printers - */ - public abstract Infer newInfer(); - public abstract TreePrinter newTextTreePrinter(PrintWriter writer); - public abstract TreePrinter newHTMLTreePrinter(PrintWriter writer); - public abstract TreePrinter newSwingTreePrinter(PrintWriter writer); - - /** - * Creates an instance variable. - * - * @param args - * @param interpret - */ - public Global(CompilerCommand args, Timer timer, boolean interpret) { - assert Debug.initialize() || true; - if (Global.instance != null) // jaco bug: can't use assert here - /* throw */ Debug.abort("duplicate creation of Global"); - Global.instance = this; - this.args = args; - this.reporter = args.reporter(); - this.timer = timer; - this.noimports = args.noimports.value; - this.nopredefs = args.nopredefs.value; - //this.optimize = args.optimize.optimize; - this.debug = args.debug.value; - this.debuginfo = args.debuginfo.value; - this.uniqid = args.uniqid.value; - this.newMatch = args.Xnewmatch.value; - this.xmlPreserveWS = args.XpreserveWS.value; - this.runTimeTypes = args.XrunTimeTypes.value; - this.explaintypes = args.explaintypes.value; - this.printtypes = args.types.value; - this.printtokens = args.print.tokens; - this.classPath = args.classpath(); - reporter.info(null, "classpath = " + classPath, false); - this.outpath = args.outpath(); - String encoding = args.encoding.value; - Charset charset = null; - try { - charset = Charset.forName(encoding); - } catch (IllegalCharsetNameException exception) { - args.encoding.error("illegal charset name '" + encoding + "'"); - } catch (UnsupportedCharsetException exception) { - args.encoding.error("unsupported charset '" + encoding + "'"); - } - if (charset == null) { - encoding = "ISO-8859-1"; // A mandatory charset - charset = Charset.forName(encoding); - } - this.encoding = encoding; - this.charset = charset; - this.decoder = charset.newDecoder(); - this.reader = new SourceReader(decoder); - this.target = interpret ? TARGET_INT : args.target.value.intern(); - this.separate = args.separate.value.equals("yes") || - args.separate.value.equals("default") && !this.target.equals(TARGET_INT); - String printFile = args.printfile.value; - OutputStream stream; - try { - stream = "-".equals(printFile) - ? System.out - : new FileOutputStream(printFile); - } catch (FileNotFoundException e) { - error("unable to open file " + printFile + ". Printing on console"); - stream = System.out; - } - this.writer = new PrintWriter(stream, debug); - if (args.printer.value.equals(PRINTER_HTML)) { - this.treePrinter = newHTMLTreePrinter(writer); - } else if (args.printer.value.equals(PRINTER_SWING)) { - this.treePrinter = newSwingTreePrinter(writer); - } else { - if (!args.printer.value.equals(PRINTER_TEXT)) - error("unknown printer kind: " + args.printer.value); - this.treePrinter = newTextTreePrinter(writer); - } - this.make = new DefaultTreeFactory(); - this.PHASE = args.phases; - args.phases.WHOLEPROG.addSkipFlag(); // !!! - // if (!optimize) PHASE.remove(args.phases.OPTIMIZE); - // TODO: Enable TailCall for other backends when they handle LabelDefs - if (target != TARGET_JVMFROMICODE) args.phases.ICODE.addSkipFlag(); - PHASE.freeze(); - PhaseDescriptor[] descriptors = PHASE.phases(); - int i = 0; - for (; i < descriptors.length; i++) { - if (!descriptors[i].hasSkipFlag()) descriptors[i].create(this); - if (descriptors[i] == PHASE.ANALYZER) { i++; break; } - } - this.treeGen = ((AnalyzerPhase)PHASE.ANALYZER.phase()).gen; - this.primitives = new Primitives(this); - for (; i < descriptors.length; i++) - if (!descriptors[i].hasSkipFlag()) descriptors[i].create(this); - assert descriptors.length >= 2 - && descriptors[0] == PHASE.INITIAL - && descriptors[descriptors.length - 1] == PHASE.TERMINAL: - Debug.show(descriptors); - assert !PHASE.INITIAL.hasSkipFlag(); - this.currentPhase = PHASE.INITIAL.phase(); - } - - /** - * Moves to next phase. - */ - public void nextPhase() { - assert currentPhase.next != null; - currentPhase = currentPhase.next; - } - - /** Move to previous phase - */ - public void prevPhase() { - assert currentPhase.prev != null; - currentPhase = currentPhase.prev; - } - - /** Creates a virtual source file with given name and content. */ - public SourceFile getSourceFile(String sourcename, String content) { - return new SourceFile(sourcename, content.toCharArray()); - } - - /** Reads and returns the source file in file with given name. */ - public SourceFile getSourceFile(String filename) throws IOException { - AbstractFile file = AbstractFile.getFile(filename); - if (file == null) throw new FileNotFoundException( - "source file '" + filename + "' could not be found"); - return getSourceFile(file); - } - - /** Reads and returns the source file in given abstract file. */ - public SourceFile getSourceFile(AbstractFile file) throws IOException { - return new SourceFile(file, reader.read(file)); - } - - /** Reads and returns the source file of given clasz. */ - public SourceFile getSourceFile(Symbol clasz) throws IOException { - assert clasz.isClass() && clasz.isStatic(): Debug.show(clasz); - AbstractFile file = classPath.getRoot().lookupPath( - SourceRepresentation.externalizeFileName(clasz, ".scala"), false); - if (file == null) throw new FileNotFoundException( - "source file for " + clasz + " could not be found"); - return getSourceFile(file); - } - - /** Returns the root symbol loader. */ - public SymbolLoader getRootLoader() { - return target == TARGET_MSIL - ? new CLRPackageParser(this, classPath.getRoot()) - : new PackageParser(this, classPath.getRoot()); - } - - /** the top-level compilation process - */ - public CompilationUnit[] compile(String[] files, boolean console) { - reporter.resetCounters(); - // parse files - List units = new ArrayList(files.length); - for (int i = 0; i < files.length; i++) { - try { - SourceFile source = getSourceFile(files[i]); - units.add(new CompilationUnit(this, source, console)); - compiledUnits.add(source); - } catch (IOException exception) { - error("IO problem (encoding problem?) with file "+files[i] - +"\n exception was: "+exception.getMessage()); - } - } - CompilationUnit[] array = new CompilationUnit[units.size()]; - return compile((CompilationUnit[])units.toArray(array)); - } - - /** - * The top-level compilation process. - * - * @param filename - * @param input - * @param console - */ - public CompilationUnit[] compile(String filename, String input, boolean console) { - reporter.resetCounters(); - SourceFile source = getSourceFile(filename, input); - compiledUnits.add(source); - CompilationUnit[] units = {new CompilationUnit(this, source, console)}; - return compile(units); - } - - /** compile all compilation units - */ - private CompilationUnit[] compile(CompilationUnit[] units) { - this.currentPhase = PHASE.INITIAL.phase(); - treePrinter.begin(); - this.loop = new CompilationLoop(this); - loadFunctions(); - units = loop.compile(units); - this.loop = null; - if (reporter.errors() != 0) { - imports.clear(); - for (Iterator i = compiledNow.entrySet().iterator(); i.hasNext();) { - Map.Entry entry = (Map.Entry)i.next(); - Symbol clasz = (Symbol)entry.getKey(); - AbstractFile file = ((SourceFile)entry.getValue()).getFile(); - clasz.reset(new SourceCompleter(this, file)); - } - } - compiledNow.clear(); - treePrinter.end(); - this.currentPhase = PHASE.TERMINAL.phase(); - return units; - } - - protected abstract void loadFunctions(); - - /** Compiles an additional source file. */ - public void compileLate(SourceFile source, boolean mixinOnly) { - assert loop != null: source; - if (!compiledUnits.contains(source)) { - compiledUnits.add(source); - CompilationUnit unit = new CompilationUnit(this, source, false, mixinOnly); - loop.insert(unit); - } - } - - - /** Add attribute for a symbol - * @param sym - symbol of the defininition to which the attribute is applied - * @param aSym - symbol of the constructor of the attribute class - * @param args - arguments to the attribute constructor - */ - public void addAttribute(Symbol sym, Symbol aSym, AConstant[] args) { - if (aSym != null && ! (aSym.isNone() || aSym.isError())) { - AttributeInfo attr = getAttributes(sym); - attr = new AttributeInfo(aSym, args, attr); - setAttribute(sym, attr); - } - } - - /** Add attribute with no arguments - * @param sym - symbol of the defininition to which the attribute is applied - * @param aSym - symbol of the constructor of the attribute class - */ - public void addAttribute(Symbol sym, Symbol aSym) { - addAttribute(sym, aSym, AConstant.EMPTY_ARRAY); - } - - /** Set the attributes for a given symbol - */ - public void setAttribute(Symbol sym, AttributeInfo attr) { - mapSymbolAttr.put(sym, attr); - if (sym.isModule() && !sym.isModuleClass()) - mapSymbolAttr.put(sym.moduleClass(), attr); - } - - /** Return all attributes for a given symbol - */ - public AttributeInfo getAttributes(Symbol sym) { - return (AttributeInfo)mapSymbolAttr.get(sym); - } - - /** Return attribute arguments - * @param sym - symbol of the definition - * @param aSym - symbol of the constructor of the attribute class - */ - public AConstant[] getAttrArguments(Symbol sym, Symbol aSym) { - AttributeInfo attrs = getAttributes(sym); - return attrs == null ? null : attrs.getAttrArguments(aSym); - } - - /** Remove the attributes for a given symbol - */ - public AttributeInfo removeAttributes(Symbol sym) { - return (AttributeInfo)mapSymbolAttr.remove(sym); - } - - public abstract void dump(CompilationUnit[] units); - - void print(CompilationUnit[] units) { - if (currentPhase.id == PHASE.MAKEBOXINGEXPLICIT.id()) { - boolean html = args.printer.value.equals(PRINTER_HTML); - if (html) writer.println("<pre>"); - ATreePrinter printer = new ATreePrinter(new CodePrinter(writer)); - boolean next = currentPhase.next != null; - if (next) currentPhase = currentPhase.next; - printer.printUnits(units); - if (next) currentPhase = currentPhase.prev; - if (html) writer.println("</pre>"); - } else if (currentPhase.id == PHASE.ICODE.id()) { - Phase phase = currentPhase; - boolean html = args.printer.value.equals(PRINTER_HTML); - if (html) writer.println("<pre>"); - - boolean next = currentPhase.next != null; - if (next) currentPhase = currentPhase.next; - ((ICodePhase)phase).print(units, new CodePrinter(writer)); - if (next) currentPhase = currentPhase.prev; - if (html) writer.println("</pre>"); - } else { - // go to next phase to print symbols with their new type - boolean next = currentPhase.next != null; - if (next) currentPhase = currentPhase.next; - treePrinter.print(units); - if (next) currentPhase = currentPhase.prev; - } - } - - // !!! <<< Interpreter stuff - public static final String CONSOLE_S = "$console$"; - private static final Name - SHOW_DEFINITION_N = Name.fromString("showDefinition"), - SHOW_VALUE_DEFINITION_N = Name.fromString("showValueDefinition"), - SET_EVALUATION_RESULT_N = Name.fromString("setEvaluationResult"); - private Symbol INTERPRETER; - private Symbol PRINTER; - private Symbol SHOW_VALUE; - private Symbol SET_EVALUATION_RESULT; - private Symbol SHOW_DEFINITION; - private Symbol SHOW_VALUE_DEFINITION; - - private Symbol INTERPRETER() { - if (INTERPRETER == null) - INTERPRETER = definitions.getModule("scala.runtime.InterpreterSupport"); - return INTERPRETER; - } - - private Symbol SHOW_DEFINITION() { - if (SHOW_DEFINITION == null) - SHOW_DEFINITION = INTERPRETER().lookup(SHOW_DEFINITION_N); - return SHOW_DEFINITION; - } - - private Symbol SHOW_VALUE_DEFINITION() { - if (SHOW_VALUE_DEFINITION == null) - SHOW_VALUE_DEFINITION = INTERPRETER().lookup(SHOW_VALUE_DEFINITION_N); - return SHOW_VALUE_DEFINITION; - } - - private Symbol SET_EVALUATION_RESULT() { - if (SET_EVALUATION_RESULT == null) - SET_EVALUATION_RESULT = INTERPRETER().lookup(SET_EVALUATION_RESULT_N); - return SET_EVALUATION_RESULT; - } - - private int module = 0; - private List imports = new ArrayList(); - public Symbol console; - - void fix1(CompilationUnit[] units) { - for (int i = 0; i < units.length; i++) { - if (units[i].console) fix1(units[i]); - } - nextPhase(); - for (int i = 0; i < imports.size(); i++) { - Symbol module = (Symbol)imports.get(i); - ((scalac.typechecker.AnalyzerPhase)PHASE.ANALYZER.phase()).addConsoleImport(module); - } - prevPhase(); - } - - private void fix1(CompilationUnit unit) { - unit.body = new Tree[] { - make.ModuleDef(Position.FIRSTPOS, - 0, Name.fromString(CONSOLE_S+module), Tree.Empty, - make.Template(Position.FIRSTPOS, new Tree[]{ - make.Apply(Position.FIRSTPOS, - make.Select(Position.FIRSTPOS, - make.Ident(Position.FIRSTPOS, Names.scala), - Names.AnyRef.toTypeName()), - new Tree[0])}, - unit.body))}; - module++; - } - - void fix2(CompilationUnit[] units) { - for (int i = 0; i < units.length; i++) { - if (units[i].console) fix2(units[i]); - } - } - - private void fix2(CompilationUnit unit) { - imports.clear(); - for (int i = 0; i < unit.body.length; i++) { - switch (unit.body[i]) { - case ModuleDef(_, _, _, Tree.Template impl): - Symbol symbol = unit.body[i].symbol(); - if (!symbol.name.toString().startsWith(CONSOLE_S)) break; - console = symbol; - if (impl.body.length <= 0) break; - imports.add(unit.body[i].symbol()); - Tree last = impl.body[impl.body.length - 1]; - if (last != Tree.Empty && last.isTerm()) { - impl.body[impl.body.length - 1] = - treeGen.Apply(last.pos, - treeGen.Select(last.pos, - treeGen.mkGlobalRef(last.pos, INTERPRETER()), - SET_EVALUATION_RESULT()), - new Tree[] { - last, - treeGen.mkStringLit( - last.pos, show(last.getType()))}); - } - TreeList body = new TreeList(); - for (int j = 0; j < impl.body.length; j++) - fix2(body, impl.body[j]); - impl.body = body.toArray(); - break; - } - } - } - - private void fix2(TreeList body, Tree tree) { - body.append(tree); - switch (tree) { - case PatDef(_, _, _): // !!! impossible (removed by analyzer) - assert false : Debug.show(tree); - return; - case ClassDef(_, _, _, _, _, _): - case PackageDef(_, _): - case ModuleDef(_, _, _, _): - case DefDef(_, _, _, _, _, _): - case AbsTypeDef(_, _, _, _): - case AliasTypeDef(_, _, _, _): - if (!mustShow(tree.symbol())) return; - body.append( - treeGen.Apply(tree.pos, - treeGen.Select(tree.pos, - treeGen.mkGlobalRef(tree.pos, INTERPRETER()), - SHOW_DEFINITION()), - new Tree[] { - treeGen.mkStringLit(tree.pos, show(tree.symbol()))})); - return; - case ValDef(_, _, _, _): - if (!mustShow(tree.symbol())) return; - body.append( - treeGen.Apply(tree.pos, - treeGen.Select(tree.pos, - treeGen.mkGlobalRef(tree.pos, INTERPRETER()), - SHOW_VALUE_DEFINITION()), - new Tree[] { - treeGen.mkStringLit(tree.pos, show(tree.symbol())), - treeGen.Ident(tree.pos, tree.symbol())})); - return; - default: - return; - } - } - - private boolean mustShow(Symbol symbol) { - return !symbol.isAccessor(); - } - - private String show(Symbol symbol) { - return new InterpreterPrinter().printSignature(symbol).toString(); - } - - private String show(Type type) { - return new InterpreterPrinter().printType(type).toString(); - } - - private class InterpreterPrinter extends SymbolTablePrinter { - public InterpreterPrinter() { - super(" "); - } - public String getSymbolName(Symbol symbol) { - String string = super.getSymbolName(symbol); - if (!debug) { - int index = string.indexOf('$'); - if (index > 0) string = string.substring(0, index); - } - return string; - } - } - - // !!! >>> Interpreter stuff - - /** issue a global error - */ - public void error(String message) { - reporter.error(null, message); - } - - /** issue a global warning - */ - public void warning(String message) { - reporter.warning(null, message); - } - - /** issue an operation note - */ - public void operation(String message) { - reporter.info(null, "[" + message + "]", false); - } - - /** issue a debug message from currentPhase - */ - // the boolean return value is here to let one write "assert log( ... )" - public boolean log(String message) { - if (log()) { - reporter.info(null, "[log " + currentPhase + "] " + message, true); - } - return true; - } - - /** return true if logging is switched on for the current phase - */ - public boolean log() { - return currentPhase.descriptor.hasLogFlag(); - } - -} |