sun.tools.java

Class Parser

java.lang.Object

sun.tools.java.Scanner

sun.tools.java.Parser

All Implemented Interfaces:

Constants, ParserActions, RuntimeConstants

Direct Known Subclasses:

BatchParser

public class Parser
extends Scanner
implements ParserActions, Constants

This class is used to parse Java statements and expressions. The result is a parse tree.

This class implements an operator precedence parser. Errors are reported to the Environment object, if the error can't be resolved immediately, a SyntaxError exception is thrown.

Error recovery is implemented by catching SyntaxError exceptions and discarding input tokens until an input token is reached that is possibly a legal continuation.

The parse tree that is constructed represents the input exactly (no rewrites to simpler forms). This is important if the resulting tree is to be used for code formatting in a programming environment. Currently only documentation comments are retained.

The parsing algorithm does NOT use any type information. Changes in the type system do not affect the structure of the parse tree. This restriction does introduce an ambiguity an expression of the form: (e1) e2 is assumed to be a cast if e2 does not start with an operator. That means that (a) - b is interpreted as subtract b from a and not cast negative b to type a. However, if a is a simple type (byte, int, ...) then it is assumed to be a cast.

WARNING: The contents of this source file are not part of any supported API. Code that depends on them does so at its own risk: they are subject to change or removal without notice.

Author:

Arthur van Hoff

Field Summary

Fields

Modifier and Type	Field and Description
protected int	argIndex
protected Scanner	scanner Usually this.scanner == (Scanner)this.

Fields inherited from class sun.tools.java.Scanner

ch, charValue, docComment, doubleValue, env, EOF, floatValue, idValue, in, intValue, LINEINC, longValue, OFFSETINC, pos, prevPos, radix, scanComments, stringValue, token

Fields inherited from interface sun.tools.java.Constants

ABSTRACT, ACCM_CLASS, ACCM_FIELD, ACCM_INNERCLASS, ACCM_MEMBER, ACCM_METHOD, ADD, AND, ARRAY, ARRAYACCESS, ASGADD, ASGBITAND, ASGBITOR, ASGBITXOR, ASGDIV, ASGLSHIFT, ASGMUL, ASGREM, ASGRSHIFT, ASGSUB, ASGURSHIFT, ASSIGN, ATT_ALL, ATT_ALLCLASSES, ATT_CODE, BITAND, BITNOT, BITOR, BITXOR, BOOLEAN, BOOLEANVAL, BREAK, BYTE, BYTEVAL, CASE, CAST, CATCH, CHAR, CHARVAL, CLASS, COLON, COMMA, COMMENT, COND, CONST, CONTINUE, CONVERT, CS_BINARY, CS_CHECKED, CS_COMPILED, CS_NOTFOUND, CS_PARSED, CS_SOURCE, CS_UNDECIDED, CS_UNDEFINED, CT_BLOCK, CT_BRANCH_FALSE, CT_BRANCH_TRUE, CT_CASE, CT_FIKT_METHOD, CT_FIKT_RET, CT_FIRST_KIND, CT_LAST_KIND, CT_METHOD, CT_SWITH_WO_DEF, DEC, DECLARATION, DEFAULT, DIV, DO, DOUBLE, DOUBLEVAL, ELSE, EQ, ERROR, EXPR, EXPRESSION, EXTENDS, F_COVDATA, F_COVERAGE, F_DEBUG_LINES, F_DEBUG_SOURCE, F_DEBUG_VARS, F_DEPENDENCIES, F_DEPRECATION, F_DUMP, F_ERRORSREPORTED, F_OPT, F_OPT_INTERCLASS, F_PRINT_DEPENDENCIES, F_STRICTDEFAULT, F_VERBOSE, F_VERSION12, F_WARNINGS, FALSE, FIELD, FINAL, FINALLY, FLOAT, FLOATVAL, FOR, GE, GOTO, GT, idAppend, idClass, idClassInit, idClone, idCode, idConstantValue, idCoverageTable, idDeprecated, idDocumentation, IDENT, idExceptions, idFinallyReturnValue, idGetClass, idInit, idInnerClasses, idJavaIoSerializable, idJavaLang, idJavaLangClass, idJavaLangCloneable, idJavaLangError, idJavaLangException, idJavaLangObject, idJavaLangRuntimeException, idJavaLangString, idJavaLangStringBuffer, idJavaLangThrowable, idLength, idLineNumberTable, idLocalVariableTable, idNew, idNull, idSourceFile, idStar, idSuper, idSynthetic, idThis, idToString, idTYPE, idValueOf, IF, IMPLEMENTS, IMPORT, INC, INLINEMETHOD, INLINENEWINSTANCE, INLINERETURN, INSTANCEOF, INT, INTERFACE, INTVAL, LBRACE, LE, LENGTH, LONG, LONGVAL, LPAREN, LSHIFT, LSQBRACKET, LT, M_ABSTRACT, M_ANONYMOUS, M_DEPRECATED, M_FINAL, M_INLINEABLE, M_INTERFACE, M_LOCAL, M_NATIVE, M_PRIVATE, M_PROTECTED, M_PUBLIC, M_STATIC, M_STRICTFP, M_SYNCHRONIZED, M_SYNTHETIC, M_TRANSIENT, M_VOLATILE, MAXFILESIZE, MAXLINENUMBER, METHOD, MM_CLASS, MM_FIELD, MM_MEMBER, MM_METHOD, MUL, NATIVE, NE, NEG, NEW, NEWARRAY, NEWFROMNAME, NEWINSTANCE, NOT, NULL, opNames, opPrecedence, OR, PACKAGE, paraDeprecated, POS, POSTDEC, POSTINC, PREDEC, prefixAccess, prefixArray, prefixClass, prefixLoc, prefixThis, prefixVal, PREINC, PRIVATE, PROTECTED, PUBLIC, QUESTIONMARK, RBRACE, REM, RETURN, RPAREN, RSHIFT, RSQBRACKET, SEMICOLON, SHORT, SHORTVAL, SIG_INNERCLASS, SIGC_INNERCLASS, STAT, STATIC, STRICTFP, STRINGVAL, SUB, SUPER, SWITCH, SYNCHRONIZED, TC_ARRAY, TC_BOOLEAN, TC_BYTE, TC_CHAR, TC_CLASS, TC_DOUBLE, TC_ERROR, TC_FLOAT, TC_INT, TC_LONG, TC_METHOD, TC_NULL, TC_SHORT, TC_VOID, THIS, THROW, THROWS, TM_ARRAY, TM_BOOLEAN, TM_BYTE, TM_CHAR, TM_CLASS, TM_DOUBLE, TM_ERROR, TM_FLOAT, TM_INT, TM_INT32, TM_INTEGER, TM_LONG, TM_METHOD, TM_NULL, TM_NUM32, TM_NUM64, TM_NUMBER, TM_REAL, TM_REFERENCE, TM_SHORT, TM_VOID, tracing, TRANSIENT, TRUE, TRY, TYPE, URSHIFT, VARDECLARATION, VOID, VOLATILE, WHEREOFFSETBITS, WHILE

Fields inherited from interface sun.tools.java.RuntimeConstants

ACC_ABSTRACT, ACC_FINAL, ACC_INTERFACE, ACC_NATIVE, ACC_PRIVATE, ACC_PROTECTED, ACC_PUBLIC, ACC_STATIC, ACC_STRICT, ACC_SUPER, ACC_SYNCHRONIZED, ACC_TRANSIENT, ACC_VOLATILE, CONSTANT_CLASS, CONSTANT_DOUBLE, CONSTANT_FIELD, CONSTANT_FLOAT, CONSTANT_INTEGER, CONSTANT_INTERFACEMETHOD, CONSTANT_INVOKEDYNAMIC, CONSTANT_LONG, CONSTANT_METHOD, CONSTANT_METHODHANDLE, CONSTANT_METHODTYPE, CONSTANT_NAMEANDTYPE, CONSTANT_STRING, CONSTANT_UNICODE, CONSTANT_UTF8, JAVA_DEFAULT_MINOR_VERSION, JAVA_DEFAULT_VERSION, JAVA_MAGIC, JAVA_MAX_SUPPORTED_MINOR_VERSION, JAVA_MAX_SUPPORTED_VERSION, JAVA_MIN_SUPPORTED_VERSION, opc_aaload, opc_aastore, opc_aconst_null, opc_aload, opc_aload_0, opc_aload_1, opc_aload_2, opc_aload_3, opc_anewarray, opc_areturn, opc_arraylength, opc_astore, opc_astore_0, opc_astore_1, opc_astore_2, opc_astore_3, opc_athrow, opc_baload, opc_bastore, opc_bipush, opc_breakpoint, opc_caload, opc_castore, opc_checkcast, opc_d2f, opc_d2i, opc_d2l, opc_dadd, opc_daload, opc_dastore, opc_dcmpg, opc_dcmpl, opc_dconst_0, opc_dconst_1, opc_ddiv, opc_dead, opc_dload, opc_dload_0, opc_dload_1, opc_dload_2, opc_dload_3, opc_dmul, opc_dneg, opc_drem, opc_dreturn, opc_dstore, opc_dstore_0, opc_dstore_1, opc_dstore_2, opc_dstore_3, opc_dsub, opc_dup, opc_dup_x1, opc_dup_x2, opc_dup2, opc_dup2_x1, opc_dup2_x2, opc_f2d, opc_f2i, opc_f2l, opc_fadd, opc_faload, opc_fastore, opc_fcmpg, opc_fcmpl, opc_fconst_0, opc_fconst_1, opc_fconst_2, opc_fdiv, opc_fload, opc_fload_0, opc_fload_1, opc_fload_2, opc_fload_3, opc_fmul, opc_fneg, opc_frem, opc_freturn, opc_fstore, opc_fstore_0, opc_fstore_1, opc_fstore_2, opc_fstore_3, opc_fsub, opc_getfield, opc_getstatic, opc_goto, opc_goto_w, opc_i2b, opc_i2c, opc_i2d, opc_i2f, opc_i2l, opc_i2s, opc_iadd, opc_iaload, opc_iand, opc_iastore, opc_iconst_0, opc_iconst_1, opc_iconst_2, opc_iconst_3, opc_iconst_4, opc_iconst_5, opc_iconst_m1, opc_idiv, opc_if_acmpeq, opc_if_acmpne, opc_if_icmpeq, opc_if_icmpge, opc_if_icmpgt, opc_if_icmple, opc_if_icmplt, opc_if_icmpne, opc_ifeq, opc_ifge, opc_ifgt, opc_ifle, opc_iflt, opc_ifne, opc_ifnonnull, opc_ifnull, opc_iinc, opc_iload, opc_iload_0, opc_iload_1, opc_iload_2, opc_iload_3, opc_imul, opc_ineg, opc_instanceof, opc_invokedynamic, opc_invokeinterface, opc_invokespecial, opc_invokestatic, opc_invokevirtual, opc_ior, opc_irem, opc_ireturn, opc_ishl, opc_ishr, opc_istore, opc_istore_0, opc_istore_1, opc_istore_2, opc_istore_3, opc_isub, opc_iushr, opc_ixor, opc_jsr, opc_jsr_w, opc_l2d, opc_l2f, opc_l2i, opc_label, opc_ladd, opc_laload, opc_land, opc_lastore, opc_lcmp, opc_lconst_0, opc_lconst_1, opc_ldc, opc_ldc_w, opc_ldc2_w, opc_ldiv, opc_lload, opc_lload_0, opc_lload_1, opc_lload_2, opc_lload_3, opc_lmul, opc_lneg, opc_lookupswitch, opc_lor, opc_lrem, opc_lreturn, opc_lshl, opc_lshr, opc_lstore, opc_lstore_0, opc_lstore_1, opc_lstore_2, opc_lstore_3, opc_lsub, opc_lushr, opc_lxor, opc_monitorenter, opc_monitorexit, opc_multianewarray, opc_new, opc_newarray, opc_nop, opc_pop, opc_pop2, opc_putfield, opc_putstatic, opc_ret, opc_return, opc_saload, opc_sastore, opc_sipush, opc_swap, opc_tableswitch, opc_try, opc_wide, opcLengths, opcNames, SIG_ARRAY, SIG_BOOLEAN, SIG_BYTE, SIG_CHAR, SIG_CLASS, SIG_DOUBLE, SIG_ENDCLASS, SIG_ENDMETHOD, SIG_FLOAT, SIG_INT, SIG_LONG, SIG_METHOD, SIG_PACKAGE, SIG_SHORT, SIG_VOID, SIGC_ARRAY, SIGC_BOOLEAN, SIGC_BYTE, SIGC_CHAR, SIGC_CLASS, SIGC_DOUBLE, SIGC_ENDCLASS, SIGC_ENDMETHOD, SIGC_FLOAT, SIGC_INT, SIGC_LONG, SIGC_METHOD, SIGC_PACKAGE, SIGC_SHORT, SIGC_VOID, T_BOOLEAN, T_BYTE, T_CHAR, T_CLASS, T_DOUBLE, T_FLOAT, T_INT, T_LONG, T_SHORT

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	Parser(Environment env, java.io.InputStream in) Create a parser
protected	Parser(Scanner scanner) Create a parser, given a scanner.
	Parser(Scanner scanner, ParserActions actions) Create a parser, given a scanner and the semantic callback.

Method Summary

Modifier and Type	Method and Description
protected void	addArgument(Node n)
protected void	beginClass(long off, java.lang.String doc, int mod, Identifier nm, Identifier sup, Identifier[] impl) Deprecated. Use the version with the IdentifierToken arguments.
ClassDefinition	beginClass(long off, java.lang.String doc, int mod, IdentifierToken nm, IdentifierToken sup, IdentifierToken[] impl) Deprecated.
void	defineField(long where, ClassDefinition c, java.lang.String doc, int mod, Type t, IdentifierToken nm, IdentifierToken[] args, IdentifierToken[] exp, Node val) Deprecated.
protected void	defineField(long where, java.lang.String doc, int mod, Type t, Identifier nm, Identifier[] args, Identifier[] exp, Node val) Deprecated. Use the version with the IdentifierToken arguments.
void	endClass(long off, ClassDefinition c) Deprecated.
protected void	endClass(long off, Identifier nm) Deprecated. Use the version with the IdentifierToken arguments.
protected void	expect(int t) Expect a token, return its value, scan the next token or throw an exception.
protected Expression[]	exprArgs(int index)
protected ClassDefinition	getCurrentClass() Report the current class under construction.
protected void	importClass(long off, Identifier nm) Deprecated. Use the version with the IdentifierToken arguments.
void	importClass(long off, IdentifierToken nm) Deprecated.
protected void	importPackage(long off, Identifier nm) Deprecated. Use the version with the IdentifierToken arguments.
void	importPackage(long off, IdentifierToken nm) Deprecated.
void	match(int open, int close) Scan to a matching '}', ']' or ')'.
protected void	packageDeclaration(long off, Identifier nm) Deprecated.
void	packageDeclaration(long off, IdentifierToken nm) Deprecated.
protected Type	parseArrayBrackets(Type t) Parse the tail of a type expression, which might be array brackets.
protected Expression	parseBinaryExpression(Expression e) Given a left-hand term, parse an operator and right-hand term.
protected Statement	parseBlockStatement()
protected void	parseClass() Parse a top-level class or interface declaration.
protected ClassDefinition	parseClassBody(IdentifierToken nm, int mod, int ctx, java.lang.String doc, java.util.Vector<IdentifierToken> ext, java.util.Vector<IdentifierToken> impl, long p) Parse the body of a class or interface declaration, starting at the left brace.
protected Statement	parseDeclaration(long p, int mod, Expression type) Parse declaration, called after the type expression has been parsed and the current token is IDENT.
protected Expression	parseExpression() Parse an expression.
protected void	parseField() Parse a field.
void	parseFile() Parse an Java file.
protected Identifier	parseIdentifier(boolean star) Deprecated.
protected void	parseInheritance(java.util.Vector<IdentifierToken> ext, java.util.Vector<IdentifierToken> impl)
protected Statement	parseLocalClass(int mod) Parse a block-local class or interface declaration.
protected Expression	parseMethodExpression(Expression e, Identifier id) Parse a method invocation.
protected int	parseModifiers(int mask) Parse a possibly-empty sequence of modifier keywords.
protected IdentifierToken	parseName(boolean star) Parse an identifier.
protected ClassDefinition	parseNamedClass(int mod, int ctx, java.lang.String doc) Parse a named class or interface declaration, starting at "class" or "interface".
protected Expression	parseNewInstanceExpression(long p, Expression outerArg, Expression type) Parse a new instance expression.
protected Statement	parseStatement() Parse a statement.
protected Expression	parseTerm() Parse a primary expression.
protected Type	parseType() Parse a type expression, this results in a Type.
protected Expression	parseTypeExpression() Parse a type expression.
protected void	recoverField(ClassDefinition newClass) Recover after a syntax error in a field.
protected void	recoverFile() Recover after a syntax error in the file.
protected boolean	recoverStatement() Recover after a syntax error in a statement.
long	scan() Scan the next token.
protected Statement[]	statArgs(int index)
protected void	topLevelExpression(Expression e) Check if an expression is a legal toplevel expression.

Methods inherited from class sun.tools.java.Scanner

getEndPos, getIdToken, useInputStream, xscan

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

argIndex

protected int argIndex

scanner

protected Scanner scanner

Usually this.scanner == (Scanner)this. However, a delegate scanner can produce tokens for this parser, in which case (Scanner)this is unused, except for this.token and this.pos instance variables which are filled from the real scanner by this.scan() and the constructor.

Constructor Detail

Parser

protected Parser(Environment env,
                 java.io.InputStream in)
          throws java.io.IOException

Create a parser

Throws:

java.io.IOException

Parser

protected Parser(Scanner scanner)
          throws java.io.IOException

Create a parser, given a scanner.

Throws:

java.io.IOException

Parser

public Parser(Scanner scanner,
              ParserActions actions)
       throws java.io.IOException

Create a parser, given a scanner and the semantic callback.

Throws:

java.io.IOException

Method Detail

packageDeclaration

@Deprecated
public void packageDeclaration(long off,
                                           IdentifierToken nm)

Deprecated.

package declaration

Specified by:

packageDeclaration in interface ParserActions

packageDeclaration

@Deprecated
protected void packageDeclaration(long off,
                                              Identifier nm)

Deprecated.

importClass

@Deprecated
public void importClass(long off,
                                    IdentifierToken nm)

Deprecated.

import class

Specified by:

importClass in interface ParserActions

importClass

@Deprecated
protected void importClass(long off,
                                       Identifier nm)

Deprecated. Use the version with the IdentifierToken arguments.

importPackage

@Deprecated
public void importPackage(long off,
                                      IdentifierToken nm)

Deprecated.

import package

Specified by:

importPackage in interface ParserActions

importPackage

@Deprecated
protected void importPackage(long off,
                                         Identifier nm)

Deprecated. Use the version with the IdentifierToken arguments.

beginClass

@Deprecated
public ClassDefinition beginClass(long off,
                                              java.lang.String doc,
                                              int mod,
                                              IdentifierToken nm,
                                              IdentifierToken sup,
                                              IdentifierToken[] impl)

Deprecated.

Define class

Specified by:

beginClass in interface ParserActions

Returns:

a cookie for the class This cookie is used by the parser when calling defineField and endClass, and is not examined otherwise.

beginClass

@Deprecated
protected void beginClass(long off,
                                      java.lang.String doc,
                                      int mod,
                                      Identifier nm,
                                      Identifier sup,
                                      Identifier[] impl)

Deprecated. Use the version with the IdentifierToken arguments.

getCurrentClass

protected ClassDefinition getCurrentClass()

Report the current class under construction. By default, it's a no-op which returns null. It may only be called before the corresponding endClass().

endClass

@Deprecated
public void endClass(long off,
                                 ClassDefinition c)

Deprecated.

End class

Specified by:

endClass in interface ParserActions

c - a cookie returned by the corresponding beginClass call

endClass

@Deprecated
protected void endClass(long off,
                                    Identifier nm)

Deprecated. Use the version with the IdentifierToken arguments.

defineField

@Deprecated
public void defineField(long where,
                                    ClassDefinition c,
                                    java.lang.String doc,
                                    int mod,
                                    Type t,
                                    IdentifierToken nm,
                                    IdentifierToken[] args,
                                    IdentifierToken[] exp,
                                    Node val)

Deprecated.

Define a field

Specified by:

defineField in interface ParserActions

c - a cookie returned by the corresponding beginClass call

defineField

@Deprecated
protected void defineField(long where,
                                       java.lang.String doc,
                                       int mod,
                                       Type t,
                                       Identifier nm,
                                       Identifier[] args,
                                       Identifier[] exp,
                                       Node val)

Deprecated. Use the version with the IdentifierToken arguments.

addArgument

protected final void addArgument(Node n)

exprArgs

protected final Expression[] exprArgs(int index)

statArgs

protected final Statement[] statArgs(int index)

expect

protected void expect(int t)
               throws SyntaxError,
                      java.io.IOException

Expect a token, return its value, scan the next token or throw an exception.

Throws:

SyntaxError

java.io.IOException

parseTypeExpression

protected Expression parseTypeExpression()
                                  throws SyntaxError,
                                         java.io.IOException

Parse a type expression. Does not parse the []'s.

Throws:

SyntaxError

java.io.IOException

parseMethodExpression

protected Expression parseMethodExpression(Expression e,
                                           Identifier id)
                                    throws SyntaxError,
                                           java.io.IOException

Parse a method invocation. Should be called when the current then is the '(' of the argument list.

Throws:

SyntaxError

java.io.IOException

parseNewInstanceExpression

protected Expression parseNewInstanceExpression(long p,
                                                Expression outerArg,
                                                Expression type)
                                         throws SyntaxError,
                                                java.io.IOException

Parse a new instance expression. Should be called when the current token is the '(' of the argument list.

Throws:

SyntaxError

java.io.IOException

parseTerm

protected Expression parseTerm()
                        throws SyntaxError,
                               java.io.IOException

Parse a primary expression.

Throws:

SyntaxError

java.io.IOException

parseExpression

protected Expression parseExpression()
                              throws SyntaxError,
                                     java.io.IOException

Parse an expression.

Throws:

SyntaxError

java.io.IOException

parseBinaryExpression

protected Expression parseBinaryExpression(Expression e)
                                    throws SyntaxError,
                                           java.io.IOException

Given a left-hand term, parse an operator and right-hand term.

Throws:

SyntaxError

java.io.IOException

recoverStatement

protected boolean recoverStatement()
                            throws SyntaxError,
                                   java.io.IOException

Recover after a syntax error in a statement. This involves discarding tokens until EOF or a possible continuation is encountered.

Throws:

SyntaxError

java.io.IOException

parseDeclaration

protected Statement parseDeclaration(long p,
                                     int mod,
                                     Expression type)
                              throws SyntaxError,
                                     java.io.IOException

Parse declaration, called after the type expression has been parsed and the current token is IDENT.

Throws:

SyntaxError

java.io.IOException

topLevelExpression

protected void topLevelExpression(Expression e)

Check if an expression is a legal toplevel expression. Only method, inc, dec, and new expression are allowed.

parseStatement

protected Statement parseStatement()
                            throws SyntaxError,
                                   java.io.IOException

Parse a statement.

Throws:

SyntaxError

java.io.IOException

parseBlockStatement

protected Statement parseBlockStatement()
                                 throws SyntaxError,
                                        java.io.IOException

Throws:

SyntaxError

java.io.IOException

parseName

protected IdentifierToken parseName(boolean star)
                             throws SyntaxError,
                                    java.io.IOException

Parse an identifier. ie: a.b.c returns "a.b.c" If star is true then "a.b.*" is allowed. The return value encodes both the identifier and its location.

Throws:

SyntaxError

java.io.IOException

parseIdentifier

@Deprecated
protected Identifier parseIdentifier(boolean star)
                                          throws SyntaxError,
                                                 java.io.IOException

Deprecated.

Throws:

SyntaxError

java.io.IOException

See Also:

parseName(boolean)

parseType

protected Type parseType()
                  throws SyntaxError,
                         java.io.IOException

Parse a type expression, this results in a Type. The parse includes trailing array brackets.

Throws:

SyntaxError

java.io.IOException

parseArrayBrackets

protected Type parseArrayBrackets(Type t)
                           throws SyntaxError,
                                  java.io.IOException

Parse the tail of a type expression, which might be array brackets. Return the given type, as possibly modified by the suffix.

Throws:

SyntaxError

java.io.IOException

parseModifiers

protected int parseModifiers(int mask)
                      throws java.io.IOException

Parse a possibly-empty sequence of modifier keywords. Return the resulting bitmask. Diagnose repeated modifiers, but make no other checks. Only modifiers mentioned in the given bitmask are scanned; an unmatched modifier must be handled by the caller.

Throws:

java.io.IOException

parseField

protected void parseField()
                   throws SyntaxError,
                          java.io.IOException

Parse a field.

Throws:

SyntaxError

java.io.IOException

recoverField

protected void recoverField(ClassDefinition newClass)
                     throws SyntaxError,
                            java.io.IOException

Recover after a syntax error in a field. This involves discarding tokens until an EOF or a possible legal continuation is encountered.

Throws:

SyntaxError

java.io.IOException

parseClass

protected void parseClass()
                   throws SyntaxError,
                          java.io.IOException

Parse a top-level class or interface declaration.

Throws:

SyntaxError

java.io.IOException

parseLocalClass

protected Statement parseLocalClass(int mod)
                             throws SyntaxError,
                                    java.io.IOException

Parse a block-local class or interface declaration.

Throws:

SyntaxError

java.io.IOException

parseNamedClass

protected ClassDefinition parseNamedClass(int mod,
                                          int ctx,
                                          java.lang.String doc)
                                   throws SyntaxError,
                                          java.io.IOException

Parse a named class or interface declaration, starting at "class" or "interface".

Throws:

SyntaxError

java.io.IOException

parseInheritance

protected void parseInheritance(java.util.Vector<IdentifierToken> ext,
                                java.util.Vector<IdentifierToken> impl)
                         throws SyntaxError,
                                java.io.IOException

Throws:

SyntaxError

java.io.IOException

parseClassBody

protected ClassDefinition parseClassBody(IdentifierToken nm,
                                         int mod,
                                         int ctx,
                                         java.lang.String doc,
                                         java.util.Vector<IdentifierToken> ext,
                                         java.util.Vector<IdentifierToken> impl,
                                         long p)
                                  throws SyntaxError,
                                         java.io.IOException

Parse the body of a class or interface declaration, starting at the left brace.

Throws:

SyntaxError

java.io.IOException

recoverFile

protected void recoverFile()
                    throws java.io.IOException

Recover after a syntax error in the file. This involves discarding tokens until an EOF or a possible legal continuation is encountered.

Throws:

java.io.IOException

parseFile

public void parseFile()

Parse an Java file.

scan

public long scan()
          throws java.io.IOException

Description copied from class: Scanner

Scan the next token.

Overrides:

scan in class Scanner

Returns:

the position of the previous token.

Throws:

java.io.IOException

match

public void match(int open,
                  int close)
           throws java.io.IOException

Description copied from class: Scanner

Scan to a matching '}', ']' or ')'. The current token must be a '{', '[' or '(';

Overrides:

match in class Scanner

Throws:

java.io.IOException