drjava/dynamicjava/src/koala/dynamicjava/parser/grammar.jj at master · SatGarcia/drjava · GitHub

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/* -*- Java -*- */

// Parser options

options {

JAVA_UNICODE_ESCAPE = true;

STATIC = false;

JDK_VERSION = "1.5";

}

PARSER_BEGIN(Parser)

package koala.dynamicjava.parser.impl;

import java.util.*;

import java.io.File;

import edu.rice.cs.plt.tuple.Option;

import edu.rice.cs.plt.tuple.Pair;

import edu.rice.cs.plt.collect.ConsList;

import edu.rice.cs.plt.collect.CollectUtil;

import koala.dynamicjava.parser.wrapper.*;

import koala.dynamicjava.tree.*;

import koala.dynamicjava.tree.ModifierSet.Modifier;

import koala.dynamicjava.tree.visitor.*;

import koala.dynamicjava.util.*;

import koala.dynamicjava.tree.tiger.*;

import edu.rice.cs.dynamicjava.Options;

/**

* This class represents a (interpreted) Java 1.1 language parser

* adapted for 1.5 language extensions.

public class Parser {

/** The name of the file currently interpreted; null by default */

private File file = null;

/** DynamicJava options */

private Options opt = Options.DEFAULT;

/**

* A flag to use in semantic lookaheads. Declared here as a workaround because

* lookahead can't access local variables or production parameters.

private boolean lookaheadFlag;

/** Hack to pass the fact that a formal parameter was varargs back to the method/constructor production. */

boolean lastFormalParameterIsVarArgs = false;

/**

* The message reader

private LocalizedMessageReader reader =

new LocalizedMessageReader("koala.dynamicjava.parser.resources.messages");

/** Sets the current file */

public void setFile(File f) { file = f; }

public void setOptions(Options o) { opt = o; }

private SourceInfo _range(Token first, Token last) {

return SourceInfo.range(file, first.beginLine, first.beginColumn, last.endLine, last.endColumn);

}

private SourceInfo _range(Token first, SourceInfo.Wrapper last) {

return SourceInfo.prepend(first.beginLine, first.beginColumn, last);

}

private SourceInfo _range(SourceInfo.Wrapper first, Token last) {

return SourceInfo.extend(first, last.beginLine, last.beginColumn);

}

private SourceInfo _range(Token first, SourceInfo last) {

return SourceInfo.prepend(first.beginLine, first.beginColumn, last);

}

private SourceInfo _range(SourceInfo first, Token last) {

return SourceInfo.extend(first, last.beginLine, last.beginColumn);

}

private SourceInfo _range(SourceInfo.Wrapper first, SourceInfo.Wrapper last) {

return SourceInfo.span(first, last);

}

private SourceInfo _range(SourceInfo first, SourceInfo last) {

return SourceInfo.span(first, last);

}

/**

* Throws a parse exception with the given message at the current (last consumed) token

* @param message - the message to be thrown

private <T> T _throwParseException(String message) throws ParseException {

ParseException pe = new ParseException(message);

pe.currentToken = token;

throw pe;

}

/**

* Throws a parse exception with the given message at the current token, if the given

* parse exception was one auto generated by the parser (not one of ours), but not if the

* message is an <EOF> message, which is passed up to allow continuation of typing

* @param pe - the previous parse exception thrown

* @param message - the message to be thrown

private <T> T _throwParseException(ParseException pe, String message) throws ParseException {

if (pe.expectedTokenSequences == null) { // has custom message

message = pe.getMessage();

}

else {

edu.rice.cs.plt.debug.DebugUtil.debug.log("Raw parse exception", pe);

}

if(pe.getMessage().indexOf("<EOF>\"") != -1) {

message = "Encountered Unexpected \"<EOF>\"";

}

return this.<T>_throwParseException(message);

}

public static enum DeclType { TOP, CLASS_MEMBER, INTERFACE_MEMBER, LOCAL, REPL };

/**

* Creates a field declaration

private FieldDeclaration createFieldDeclaration(ModifierSet mods,

TypeName typ,

Token name,

Expression exp,

int dim) {

SourceInfo si = (exp == null) ? _range(mods, name) : _range(mods, exp);

// If the field is an array, create an array type node

if (dim > 0) {

typ = new ArrayTypeName(typ, dim, false, typ.getSourceInfo());

}

return new FieldDeclaration(mods, typ, name.image, exp, si);

}

/**

* Creates a variable declaration

private VariableDeclaration createVariableDeclaration(ModifierSet mods,

TypeName typ,

Token name,

Expression exp,

int dim) {

SourceInfo si = (exp == null) ? _range(mods, name) : _range(mods, exp);

// If the variable contains an array, create an array type node

if (dim > 0) {

typ = new ArrayTypeName(typ, dim, false, typ.getSourceInfo());

}

return new VariableDeclaration(mods, typ, name.image, exp, si);

}

private void checkModifiers(ModifierSet mods, ModifierSet.Modifier... allowed) throws ParseException {

Set<ModifierSet.Modifier> copy = EnumSet.copyOf(mods.getFlags());

for (ModifierSet.Modifier m : allowed) { copy.remove(m); }

if (!copy.isEmpty()) {

ModifierSet.Modifier badMod = copy.iterator().next();

_throwParseException("Modifier " + badMod.getName() + " is not allowed here");

}

/** A hierarchy of helper classes for building primary expressions. */

abstract class Primary implements SourceInfo.Wrapper {

private final SourceInfo _si;

protected Primary(SourceInfo si) { _si = si; }

public SourceInfo getSourceInfo() { return _si; }

public Expression asExpression() throws ParseException {

return _throwParseException("Incomplete expression");

}

public Primary dotId(Option<List<TypeName>> targs, Token id) throws ParseException {

if (targs.isNone()) { return _throwParseException("Unexpected identifier"); }

else { return _throwParseException("Unexpected type arguments and identifier"); }

}

public Primary dotThis(Option<List<TypeName>> targs, Token t) throws ParseException {

if (targs.isNone()) { return _throwParseException("Unexpected 'this' keyword"); }

else { return _throwParseException("Unexpected type arguments and 'this' keyword"); }

}

public Primary dotSuper(Option<List<TypeName>> targs, Token t) throws ParseException {

if (targs.isNone()) { return _throwParseException("Unexpected 'super' keyword"); }

else { return _throwParseException("Unexpected type arguments and 'super' keyword"); }

}

public Primary dotClass(Token t) throws ParseException {

return _throwParseException("Illegal class literal");

}

public Primary dotNew(Option<List<TypeName>> targs, Token id) throws ParseException {

if (targs.isNone()) { return _throwParseException("Unexpected 'new' keyword"); }

else { return _throwParseException("Unexpected 'new' keyword and type arguments"); }

}

public Primary withArrayDim(Token last) throws ParseException {

return _throwParseException("Unexpected empty array brackets");

}

public Primary withArrayAccess(Expression exp, Token last) throws ParseException {

return _throwParseException("Unexpected array access");

}

public Primary withTypeArgs(List<TypeName> targs, Token last) throws ParseException {

return _throwParseException("Unexpected type arguments");

}

public Primary withArgs(List<Expression> args, Token last) throws ParseException {

return _throwParseException("Unexpected argument list");

}

public Primary withClassBody(List<Node> members, Token last) throws ParseException {

return _throwParseException("Unexpected class body");

}

/** A primary that can be parsed as a complete expression and act as a method receiver, etc. */

abstract class CompletedPrimary extends Primary {

protected CompletedPrimary(SourceInfo si) { super(si); }

@Override public abstract Expression asExpression() throws ParseException;

@Override public Primary dotId(Option<List<TypeName>> targs, Token id) throws ParseException {

if (targs.isNone()) { return new ObjectFieldAccessPrimary(asExpression(), id); }

else { return new PartialObjectMethodCallPrimary(asExpression(), targs, id); }

}

@Override public Primary dotSuper(Option<List<TypeName>> targs, Token t) throws ParseException {

return new PartialSuperConstructorCallPrimary(asExpression(), targs, t);

}

@Override public Primary dotNew(Option<List<TypeName>> targs, Token id) throws ParseException {

return new PartialInnerAllocationPrimary(asExpression(), targs, id);

}

@Override public Primary withArrayAccess(Expression exp, Token last) throws ParseException {

return new ExpressionPrimary(new ArrayAccess(asExpression(), exp, _range(this, last)));

}

/** A primary that can *only* be parsed as the given expression, regardless of what follows. */

class ExpressionPrimary extends CompletedPrimary {

private Expression _exp;

public ExpressionPrimary(Expression exp) { super(exp.getSourceInfo()); _exp = exp; }

public Expression asExpression() { return _exp; }

}

/** Like an ExpressionPrimary, but constructor calls can't be followed by additional dots, etc. */

class ConstructorCallPrimary extends Primary {

private ConstructorCall _call;

public ConstructorCallPrimary(ConstructorCall call) { super(call.getSourceInfo()); _call = call; }

@Override public Expression asExpression() { return _call; }

}

/** An ExpressionPrimary, but doesn't allow array accesses. */

class ArrayAllocationPrimary extends ExpressionPrimary {

public ArrayAllocationPrimary(ArrayAllocation alloc) { super(alloc); }

public Primary withArrayAccess(Expression exp, Token last) throws ParseException {

return _throwParseException("Unexpected array access");

}

/** A dotted sequence of names. */

class AmbiguousNamePrimary extends CompletedPrimary {

private final ConsList.Nonempty<IdentifierToken> _reversed;

public AmbiguousNamePrimary(Token id) {

this(ConsList.<IdentifierToken>singleton(new TreeToken(id, file)), _range(id, id));

}

private AmbiguousNamePrimary(ConsList.Nonempty<IdentifierToken> reversed, SourceInfo si) {

super(si);

_reversed = reversed;

}

private LinkedList<IdentifierToken> ids() { return CollectUtil.makeLinkedList(ConsList.reverse(_reversed)); }

public Expression asExpression() {

return new AmbiguousName(ids(), getSourceInfo());

}

@Override public Primary dotId(Option<List<TypeName>> targs, Token id) {

if (targs.isNone()) {

return new AmbiguousNamePrimary(ConsList.cons(new TreeToken(id, file), _reversed), _range(this, id));

}

else { return new PartialObjectMethodCallPrimary(asExpression(), targs, id); }

}

@Override public Primary dotThis(Option<List<TypeName>> targs, Token t) throws ParseException {

if (targs.isNone()) {

Option<String> cn = Option.some(TreeUtilities.listToName(ids()));

return new ExpressionPrimary(new ThisExpression(cn, _range(this, t)));

}

else { return _throwParseException("Unexpected type arguments"); }

}

@Override public Primary dotSuper(Option<List<TypeName>> targs, Token t) throws ParseException {

if (targs.isNone()) { return new PartialSuperPrimary(ids(), t); }

else { return super.dotSuper(targs, t); }

}

@Override public Primary dotClass(Token t) {

return new ExpressionPrimary(new TypeExpression(new ReferenceTypeName(ids(), getSourceInfo()), _range(this, t)));

}

@Override public Primary withArrayDim(Token last) {

TypeName elt = new ReferenceTypeName(ids(), getSourceInfo());

return new ArrayTypeNamePrimary(new ArrayTypeName(elt, 1, false, _range(this, last)));

}

@Override public Primary withTypeArgs(List<TypeName> targs, Token last) {

return new GenericReferenceTypeNamePrimary(_reversed, targs, _range(this, last));

}

@Override public Primary withArgs(List<Expression> args, Token last) {

SourceInfo si = _range(this, last);

ConsList<? extends IdentifierToken> revObjIds = _reversed.rest();

if (revObjIds.isEmpty()) {

return new ExpressionPrimary(new SimpleMethodCall(_reversed.first().image(), args, si));

}

else {

LinkedList<IdentifierToken> objIds = CollectUtil.makeLinkedList(ConsList.reverse(revObjIds));

AmbiguousName obj = new AmbiguousName(objIds, _range(objIds.getFirst(), objIds.getLast()));

return new ExpressionPrimary(new ObjectMethodCall(obj, _reversed.first().image(), args, si));

}

/** A dotted name with at least one type argument. Can be followed by additional identifiers and type arguments. */

class GenericReferenceTypeNamePrimary extends Primary {

protected final ConsList.Nonempty<IdentifierToken> _reversed;

protected final ConsList.Nonempty<List<TypeName>> _targsReversed;

public GenericReferenceTypeNamePrimary(ConsList.Nonempty<IdentifierToken> reversed, List<TypeName> targs,

SourceInfo si) {

super(si);

_reversed = reversed;

ConsList<List<TypeName>> noArgs = ConsList.empty();

int noArgCount = _reversed.size() - 1;

for (int i = 0; i < noArgCount; i++) { noArgs = ConsList.cons(new LinkedList<TypeName>(), noArgs); }

_targsReversed = ConsList.cons(targs, noArgs);

}

private GenericReferenceTypeNamePrimary(ConsList.Nonempty<IdentifierToken> reversed,

ConsList.Nonempty<List<TypeName>> targsReversed, SourceInfo si) {

super(si);

_reversed = reversed;

_targsReversed = targsReversed;

}

protected GenericReferenceTypeName asTypeName() {

List<IdentifierToken> ids = CollectUtil.makeLinkedList(ConsList.reverse(_reversed));

List<List<? extends TypeName>> targs =

CollectUtil.<List<? extends TypeName>>makeLinkedList(ConsList.reverse(_targsReversed));

return new GenericReferenceTypeName(ids, targs, getSourceInfo());

}

@Override public Primary dotId(Option<List<TypeName>> targs, Token id) {

if (targs.isNone()) { return new IdGenericReferenceTypeNamePrimary(this, id); }

else { return new PartialStaticMethodCallPrimary(asTypeName(), targs, id); }

}

@Override public Primary dotClass(Token t) {

return new ExpressionPrimary(new TypeExpression(asTypeName(), _range(this, t)));

}

@Override public Primary withArrayDim(Token last) {

return new ArrayTypeNamePrimary(new ArrayTypeName(asTypeName(), 1, false, _range(this, last)));

}

/** A GenericReferenceTypeNamePrimary that ends with an id. */

class IdGenericReferenceTypeNamePrimary extends GenericReferenceTypeNamePrimary {

private final GenericReferenceTypeNamePrimary _prev;

public IdGenericReferenceTypeNamePrimary(GenericReferenceTypeNamePrimary prev, Token id) {

super(ConsList.cons(new TreeToken(id, file), prev._reversed),

ConsList.cons(new LinkedList<TypeName>(), prev._targsReversed),

_range(prev, id));

_prev = prev;

}

@Override public Primary withTypeArgs(List<TypeName> targs, Token last) {

ConsList.Nonempty<List<TypeName>> newTargs = ConsList.cons(targs, _targsReversed.rest());

return new GenericReferenceTypeNamePrimary(_reversed, newTargs, _range(this, last));

}

@Override public Primary withArgs(List<Expression> args, Token last) {

return new ExpressionPrimary(new StaticMethodCall(_prev.asTypeName(), _reversed.first().image(),

args, _range(this, last)));

}

/** An array type name. */

class ArrayTypeNamePrimary extends Primary {

private final ArrayTypeName _type;

public ArrayTypeNamePrimary(ArrayTypeName type) { super(type.getSourceInfo()); _type = type; }

@Override public Primary dotClass(Token t) {

return new ExpressionPrimary(new TypeExpression(_type, _range(this, t)));

}

@Override public Primary withArrayDim(Token last) {

return new ArrayTypeNamePrimary(new ArrayTypeName(_type, 1, false, _range(this, last)));

}

/** A primitive type, which may be part of a class literal or an array type. */

class PrimitiveTypeNamePrimary extends Primary {

private final PrimitiveTypeName _type;

public PrimitiveTypeNamePrimary(PrimitiveTypeName type) { super(type.getSourceInfo()); _type = type; }

@Override public Primary dotClass(Token t) {

return new ExpressionPrimary(new TypeExpression(_type, _range(this, t)));

}

@Override public Primary withArrayDim(Token last) {

return new ArrayTypeNamePrimary(new ArrayTypeName(_type, 1, false, _range(this, last)));

}

/** A "void" keyword, which may be part of a class literal. */

class VoidTypeNamePrimary extends Primary {

private final VoidTypeName _type;

public VoidTypeNamePrimary(VoidTypeName type) { super(type.getSourceInfo()); _type = type; }

@Override public Primary dotClass(Token t) {

return new ExpressionPrimary(new TypeExpression(_type, _range(this, t)));

}

/** Optional type arguments followed by a method name. */

class PartialSimpleMethodCallPrimary extends Primary {

private final Option<List<TypeName>> _targs;

private final String _name;

public PartialSimpleMethodCallPrimary(Option<List<TypeName>> targs, Token id, SourceInfo si) {

super(si);

_targs = targs;

_name = id.image;

}

@Override public Primary withArgs(List<Expression> args, Token last) throws ParseException {

SourceInfo si = _range(this, last);

return new ExpressionPrimary(new SimpleMethodCall(_targs, _name, args, si));

}

/** An expression followed by a dot and a name. May be followed by method arguments. */

class ObjectFieldAccessPrimary extends CompletedPrimary {

private final Expression _obj;

private final String _name;

public ObjectFieldAccessPrimary(Expression obj, Token id) {

super(_range(obj, id));

_obj = obj;

_name = id.image;

}

public Expression asExpression() { return new ObjectFieldAccess(_obj, _name, getSourceInfo()); }

@Override public Primary withArgs(List<Expression> args, Token last) {

return new ExpressionPrimary(new ObjectMethodCall(_obj, _name, args, _range(this, last)));

}

/** An expression followed by a dot, optional type arguments, and a method name. */

class PartialObjectMethodCallPrimary extends Primary {

private final Expression _obj;

private final Option<List<TypeName>> _targs;

private final String _name;

public PartialObjectMethodCallPrimary(Expression obj, Option<List<TypeName>> targs, Token id) {

super(_range(obj, id));

_obj = obj;

_targs = targs;

_name = id.image;

}

@Override public Primary withArgs(List<Expression> args, Token last) {

SourceInfo si = _range(this, last);

return new ExpressionPrimary(new ObjectMethodCall(_obj, _targs, _name, args, si));

}

/** A type followed by a dot, optional type arguments, and a method name. */

class PartialStaticMethodCallPrimary extends Primary {

private final TypeName _type;

private final Option<List<TypeName>> _targs;

private final String _name;

PartialStaticMethodCallPrimary(TypeName type, Option<List<TypeName>> targs, Token id) {

super(_range(type, id));

_type = type;

_targs = targs;

_name = id.image;

}

@Override public Primary withArgs(List<Expression> args, Token last) {

SourceInfo si = _range(this, last);

return new ExpressionPrimary(new StaticMethodCall(_type, _targs, _name, args, si));

}

/** The "this" keyword. May be a constructor call. */

class ThisExpressionPrimary extends CompletedPrimary {

public ThisExpressionPrimary(Token t) { super(_range(t, t)); }

public Expression asExpression() {

return new ThisExpression(Option.<String>none(), getSourceInfo());

}

@Override public Primary withArgs(List<Expression> args, Token last) {

return new ConstructorCallPrimary(new ConstructorCall(null, args, false, _range(this, last)));

}

/** A "this" keyword prefixed by optional type arguments. */

class PartialThisConstructorCallPrimary extends Primary {

private final Option<List<TypeName>> _targs;

public PartialThisConstructorCallPrimary(Option<List<TypeName>> targs, SourceInfo si) {

super(si);

_targs = targs;

}

@Override public Primary withArgs(List<Expression> args, Token last) throws ParseException {

if (_targs.isSome()) {

return _throwParseException("Parameterized this constructor calls are not yet supported");

}

return new ConstructorCallPrimary(new ConstructorCall(null, args, false, _range(this, last)));

}

/** The "super" keyword, optionally prefixed by a dotted name. May be a constructor call or a field/method access. */

class PartialSuperPrimary extends Primary {

private final LinkedList<IdentifierToken> _ids; // may be null

public PartialSuperPrimary(Token t) { super(_range(t, t)); _ids = null; }

public PartialSuperPrimary(LinkedList<IdentifierToken> ids, Token t) {

super(_range(ids.getFirst(), t));

_ids = ids;

}

@Override public Primary dotId(Option<List<TypeName>> targs, Token id) {

Option<String> cn = (_ids == null) ? Option.<String>none() : Option.some(TreeUtilities.listToName(_ids));

if (targs.isNone()) { return new SuperFieldAccessPrimary(cn, id, _range(this, id)); }

else { return new PartialSuperMethodCallPrimary(cn, targs, id, _range(this, id)); }

}

@Override public Primary withArgs(List<Expression> args, Token last) {

Expression outer = null;

if (_ids != null) { outer = new AmbiguousName(_ids, _range(_ids.getFirst(), _ids.getLast())); }

return new ConstructorCallPrimary(new ConstructorCall(outer, args, true, _range(this, last)));

}

/** A "super" keyword prefixed by optional type arguments. Optionally prefixed by an outer expression. */

class PartialSuperConstructorCallPrimary extends Primary {

private final Expression _outer; // may be null

private final Option<List<TypeName>> _targs;

public PartialSuperConstructorCallPrimary(Option<List<TypeName>> targs, SourceInfo si) {

super(si);

_outer = null;

_targs = targs;

}

public PartialSuperConstructorCallPrimary(Expression outer, Option<List<TypeName>> targs, Token last) {

super(_range(outer, last));

_outer = outer;

_targs = targs;

}

@Override public Primary withArgs(List<Expression> args, Token last) throws ParseException {

if (_targs.isSome()) {

return _throwParseException("Parameterized super constructor calls are not yet supported");

}

return new ConstructorCallPrimary(new ConstructorCall(_outer, args, true, _range(this, last)));

}

/**

* A "super" keyword (optionally prefixed by a name), followed by a dot and a name. May be followed by

* method arguments.

class SuperFieldAccessPrimary extends CompletedPrimary {

private final Option<String> _className;

private final String _name;

public SuperFieldAccessPrimary(Option<String> className, Token id, SourceInfo si) {

super(si);

_className = className;

_name = id.image;

}

public Expression asExpression() throws ParseException {

return new SuperFieldAccess(_className, _name, getSourceInfo());

}

@Override public Primary withArgs(List<Expression> args, Token last) throws ParseException {

return new ExpressionPrimary(new SuperMethodCall(_className, _name, args, _range(this, last)));

}

/**

* A "super" keyword (optionally prefixed by a name), followed by a dot, optional type arguments, and

* a method name.

class PartialSuperMethodCallPrimary extends Primary {

private final Option<String> _className;

private final Option<List<TypeName>> _targs;

private final String _name;

PartialSuperMethodCallPrimary(Option<String> className, Option<List<TypeName>> targs, Token id,

SourceInfo si) {

super(si);

_className = className;

_targs = targs;

_name = id.image;

}

@Override public Primary withArgs(List<Expression> args, Token last) throws ParseException {

SourceInfo si = _range(this, last);

return new ExpressionPrimary(new SuperMethodCall(_className, _targs, _name, args, si));

}

/** A "new" keyword followed by optional type arguments and a type. */

class PartialSimpleAllocationPrimary extends Primary {

private final Option<List<TypeName>> _targs;

private final ReferenceTypeName _type;

public PartialSimpleAllocationPrimary(Option<List<TypeName>> targs, ReferenceTypeName type, SourceInfo si) {

super(si);

_targs = targs;

_type = type;

}

@Override public Primary withArgs(List<Expression> args, Token last) {

return new SimpleAllocationPrimary(_targs, _type, args, _range(this, last));

}

/**

* A "new" keyword followed by optional type arguments, a type, and constructor arguments. May

* be an anonymous allocation if followed by a class body.

class SimpleAllocationPrimary extends CompletedPrimary {

private final Option<List<TypeName>> _targs;

private final ReferenceTypeName _type;

private final List<Expression> _args;

public SimpleAllocationPrimary(Option<List<TypeName>> targs, ReferenceTypeName type, List<Expression> args,

SourceInfo si) {

super(si);

_targs = targs;

_type = type;

_args = args;

}

public Expression asExpression() {

return new SimpleAllocation(_targs, _type, _args, getSourceInfo());

}

@Override public Primary withClassBody(List<Node> members, Token last) {

SourceInfo si = _range(this, last);

return new ExpressionPrimary(new AnonymousAllocation(_targs, _type, _args, members, si));

}

/** An expression followed by a dot, "new", optional type arguments, and a class name. */

class PartialInnerAllocationPrimary extends Primary {

private final Expression _outer;

private final Option<List<TypeName>> _targs;

private final String _name;

public PartialInnerAllocationPrimary(Expression outer, Option<List<TypeName>> targs, Token id) {

super(_range(outer, id));

_outer = outer;

_targs = targs;

_name = id.image;

}

@Override public Primary withTypeArgs(List<TypeName> args, Token last) {

return new PartialGenericInnerAllocationPrimary(_outer, _targs, _name, args, last);

}

@Override public Primary withArgs(List<Expression> args, Token last) {

return new InnerAllocationPrimary(_outer, _targs, _name, Option.<List<TypeName>>none(), args, last);

}

/** An expression followed by a dot, "new", optional type arguments, a class name, and class type arguments. */

class PartialGenericInnerAllocationPrimary extends Primary {

private final Expression _outer;

private final Option<List<TypeName>> _targs;

private final String _name;

private final List<TypeName> _ctargs;

public PartialGenericInnerAllocationPrimary(Expression outer, Option<List<TypeName>> targs, String name,

List<TypeName> ctargs, Token last) {

super(_range(outer, last));

_outer = outer;

_targs = targs;

_name = name;

_ctargs = ctargs;

}

@Override public Primary withArgs(List<Expression> args, Token last) {

return new InnerAllocationPrimary(_outer, _targs, _name, Option.some(_ctargs), args, last);

}

/**

* An expresion followed by a dot, "new", optional type arguments, a class name, optional class type arguments,

* and constructor arguments. May be an anonymous allocation if followed by a class body.

class InnerAllocationPrimary extends CompletedPrimary {

private final Expression _outer;

private final Option<List<TypeName>> _targs;

private final String _name;

private final Option<List<TypeName>> _ctargs;

private final List<Expression> _args;

public InnerAllocationPrimary(Expression outer, Option<List<TypeName>> targs, String name,

Option<List<TypeName>> ctargs, List<Expression> args, Token last) {

super(_range(outer, last));

_outer = outer;

_targs = targs;

_name = name;

_ctargs = ctargs;

_args = args;

}

public Expression asExpression() {

return new InnerAllocation(_outer, _targs, _name, _ctargs, _args, getSourceInfo());

}

@Override public Primary withClassBody(List<Node> members, Token last) {

SourceInfo si = _range(this, last);

return new ExpressionPrimary(new AnonymousInnerAllocation(_outer, _targs, _name, _ctargs, _args, members, si));

}

PARSER_END(Parser)

* The lexical grammar

/* WHITE SPACE */

SKIP :

{

" "

| "\t"

| "\n"

| "\r"

| "\f"

}

/* COMMENTS */

SKIP :

{

"//" : IN_SINGLE_LINE_COMMENT

"#" : IN_SINGLE_LINE_COMMENT

<"/**" ~["/"]> { input_stream.backup(1); } : IN_FORMAL_COMMENT

"/*" : IN_MULTI_LINE_COMMENT

}

<IN_SINGLE_LINE_COMMENT>

SKIP :

{

<SINGLE_LINE_COMMENT: "\n" | "\r" | "\r\n" > : DEFAULT

}

<IN_FORMAL_COMMENT>

SKIP :

{

<FORMAL_COMMENT: "*/" > : DEFAULT

}

<IN_MULTI_LINE_COMMENT>

SKIP :

{

<MULTI_LINE_COMMENT: "*/" > : DEFAULT

}

<IN_SINGLE_LINE_COMMENT,IN_FORMAL_COMMENT,IN_MULTI_LINE_COMMENT>

SKIP :

{

< ~[] >

}

/* RESERVED WORDS AND LITERALS */

TOKEN :

{

< ABSTRACT: "abstract" >

| < ASSERT: "assert" >

| < BOOLEAN: "boolean" >

| < BREAK: "break" >

| < BYTE: "byte" >

| < CASE: "case" >

| < CATCH: "catch" >

| < CHAR: "char" >

| < CLASS: "class" >

| < CONST: "const" >

| < CONTINUE: "continue" >

| < _DEFAULT: "default" >

| < DO: "do" >

| < DOUBLE: "double" >

| < ELSE: "else" >

| < ENUM: "enum" >

| < EXTENDS: "extends" >

| < FALSE: "false" >

| < FINAL: "final" >

| < FINALLY: "finally" >

| < FLOAT: "float" >

| < FOR: "for" >

| < GOTO: "goto" >

| < IF: "if" >

| < IMPLEMENTS: "implements" >

| < IMPORT: "import" >

| < INSTANCEOF: "instanceof" >

| < INT: "int" >

| < INTERFACE: "interface" >

| < LONG: "long" >

| < NATIVE: "native" >

| < NEW: "new" >

| < NULL: "null" >

| < PACKAGE: "package">

| < PRIVATE: "private" >

| < PROTECTED: "protected" >

| < PUBLIC: "public" >

| < RETURN: "return" >

| < SHORT: "short" >

| < STATIC: "static" >

| < STRICTFP: "strictfp" >

| < SUPER: "super" >

| < SWITCH: "switch" >

| < SYNCHRONIZED: "synchronized" >

| < THIS: "this" >

| < THROW: "throw" >

| < THROWS: "throws" >

| < TRANSIENT: "transient" >

| < TRUE: "true" >

| < TRY: "try" >

| < VOID: "void" >

| < VOLATILE: "volatile" >

| < WHILE: "while" >

}

/* LITERALS */

TOKEN :

{

< INTEGER_LITERAL:

<DECIMAL_LITERAL>

| <HEX_LITERAL>

| <OCTAL_LITERAL>

< LONG_LITERAL:

<DECIMAL_LITERAL> ["l","L"]

| <HEX_LITERAL> ["l","L"]

| <OCTAL_LITERAL> ["l","L"]

< #DECIMAL_LITERAL: ["1"-"9"] (["0"-"9"])* >

< #HEX_LITERAL: "0" ["x","X"] (["0"-"9","a"-"f","A"-"F"])+ >

< #OCTAL_LITERAL: "0" (["0"-"7"])* >

< FLOAT_LITERAL:

(["0"-"9"])+ "." (["0"-"9"])* (<EXPONENT>)? ["f","F"]

| "." (["0"-"9"])+ (<EXPONENT>)? ["f","F"]

| (["0"-"9"])+ <EXPONENT> ["f","F"]

| (["0"-"9"])+ (<EXPONENT>)? ["f","F"]

< DOUBLE_LITERAL:

(["0"-"9"])+ "." (["0"-"9"])* (<EXPONENT>)? (["d","D"])?

| "." (["0"-"9"])+ (<EXPONENT>)? (["d","D"])?

| (["0"-"9"])+ <EXPONENT> (["d","D"])?

| (["0"-"9"])+ (<EXPONENT>)? ["d","D"]

< #EXPONENT: ["e","E"] (["+","-"])? (["0"-"9"])+ >

< CHARACTER_LITERAL:

"'"

( (~["'","\\","\n","\r"])

| ("\\"

( ["n","t","b","r","f","\\","'","\""]

| ["0"-"7"] ( ["0"-"7"] )?

| ["0"-"3"] ["0"-"7"] ["0"-"7"]

)

"'"

< STRING_LITERAL:

"\""

( (~["\"","\\","\n","\r"])

| ("\\"

( ["n","t","b","r","f","\\","'","\""]

| ["0"-"7"] ( ["0"-"7"] )?

| ["0"-"3"] ["0"-"7"] ["0"-"7"]

)

"\""

}

/* IDENTIFIERS */

TOKEN :

{

< IDENTIFIER: <LETTER> (<LETTER>|<DIGIT>)* >

< #LETTER:

[

"\u0024",

"\u0041"-"\u005a",

"\u005f",

"\u0061"-"\u007a",

"\u00c0"-"\u00d6",

"\u00d8"-"\u00f6",

"\u00f8"-"\u00ff",

"\u0100"-"\u1fff",

"\u3040"-"\u318f",

"\u3300"-"\u337f",

"\u3400"-"\u3d2d",

"\u4e00"-"\u9fff",

"\uf900"-"\ufaff"

]

< #DIGIT:

[

"\u0030"-"\u0039",

"\u0660"-"\u0669",

"\u06f0"-"\u06f9",

"\u0966"-"\u096f",

"\u09e6"-"\u09ef",

"\u0a66"-"\u0a6f",

"\u0ae6"-"\u0aef",

"\u0b66"-"\u0b6f",

"\u0be7"-"\u0bef",

"\u0c66"-"\u0c6f",

"\u0ce6"-"\u0cef",

"\u0d66"-"\u0d6f",

"\u0e50"-"\u0e59",

"\u0ed0"-"\u0ed9",

"\u1040"-"\u1049"

]

}

/* SEPARATORS */

TOKEN :

{

< LPAREN: "(" >

| < RPAREN: ")" >

| < LBRACE: "{" >

| < RBRACE: "}" >

| < LBRACKET: "[" >

| < RBRACKET: "]" >

| < SEMICOLON: ";" >

| < COMMA: "," >

| < DOT: "." >

}

/* OPERATORS */

TOKEN :

{

< ASSIGN: "=" >

| < GREATER_THAN: ">" >

| < LESS: "<" >

| < BANG: "!" >

| < TILDE: "~" >

| < HOOK: "?" >

| < COLON: ":" >

| < EQUAL: "==" >

| < LESS_OR_EQUAL: "<=" >

| < GREATER_OR_EQUAL: ">=" >

| < NOT_EQUAL: "!=" >

| < CONDITIONAL_OR: "||" >

| < CONDITIONAL_AND: "&&" >

| < INCREMENT: "++" >

| < DECREMENT: "--" >

| < PLUS: "+" >

| < MINUS: "-" >

| < STAR: "*" >

| < SLASH: "/" >

| < BITWISE_AND: "&" >

| < BITWISE_OR: "|" >

| < XOR: "^" >

| < REMAINDER: "%" >

| < LEFT_SHIFT: "<<" >

/* | < RIGHT_SIGNED_SHIFT: ">>" >

| < RIGHT_UNSIGNED_SHIFT: ">>>" > */

| < PLUS_ASSIGN: "+=" >

| < MINUS_ASSIGN: "-=" >

| < STAR_ASSIGN: "*=" >

| < SLASH_ASSIGN: "/=" >

| < AND_ASSIGN: "&=" >

| < OR_ASSIGN: "|=" >

| < XOR_ASSIGN: "^=" >

| < REMAINDER_ASSIGN: "%=" >

| < LEFT_SHIFT_ASSIGN: "<<=" >

| < RIGHT_SIGNED_SHIFT_ASSIGN: ">>=" >

| < RIGHT_UNSIGNED_SHIFTASSIGN: ">>>=" >

| < VAR_ARGS: "...">

}

TOKEN : /* OPERATORS, from Generics Preprocessor */

{

/* < ASSIGN: "=" >

| < GT: ">" >

| < LT: "<" >

| < BANG: "!" >

| < TILDE: "~" >

| < HOOK: "?" >

| < COLON: ":" >

| < EQ: "==" >

| < LE: "<=" >

| < GE: ">=" >

| < NE: "!=" >

| < SC_OR: "||" >

| < SC_AND: "&&" >

| < INCR: "++" >

| < DECR: "--" >

| < PLUS: "+" >

View remainder of file in raw view

drjava/dynamicjava/src/koala/dynamicjava/parser/grammar.jj at master · SatGarcia/drjava · GitHub

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