mjc

org.multijava.mjc
Class JFieldDeclaration

java.lang.Object
  extended byorg.multijava.util.Utils
      extended byorg.multijava.util.compiler.Phylum
          extended byorg.multijava.mjc.JPhylum
              extended byorg.multijava.mjc.JMemberDeclaration
                  extended byorg.multijava.mjc.JFieldDeclaration
All Implemented Interfaces:
Annotatable, Cloneable, Constants, Constants, JFieldDeclarationType, JMemberDeclarationType, PhylumType

public class JFieldDeclaration
extends JMemberDeclaration
implements JFieldDeclarationType

This class represents a field declaration in the syntax tree.


Field Summary
protected  JVariableDefinition variable
           
 
Fields inherited from class org.multijava.mjc.JMemberDeclaration
 
Fields inherited from class org.multijava.mjc.JPhylum
EMPTY
 
Fields inherited from class org.multijava.util.compiler.Phylum
 
Fields inherited from class org.multijava.util.Utils
DBG_LEVEL_HIGH, DBG_LEVEL_LOW, DBG_LEVEL_NO
 
Fields inherited from interface org.multijava.mjc.Constants
ACC_MODIFIER_FLAGS_MASK, ACC_NON_NULL, ACC_NON_NULL_BY_DEFAULT, ACC_NULLABLE, ACC_NULLABLE_BY_DEFAULT, ACC_PURE, ACCESS_FLAG_ARRAY, ACCESS_FLAG_NAMES, AMID_JAVA_MATH, AMID_MAX, AMID_SAFE_MATH, CMP_VERSION, IMPLICITLY_NON_NULL, JAV_ASSERTION_ERROR, JAV_CLASS, JAV_CLASSLOADER, JAV_CLASSNOTFOUND_EXCEPTION, JAV_CLONE, JAV_CLONEABLE, JAV_CONSTRUCTOR, JAV_ERROR, JAV_EXCEPTION, JAV_INIT, JAV_LENGTH, JAV_NAME_SEPARATOR, JAV_NOCLASSDEFFOUND_ERROR, JAV_OBJECT, JAV_OUTER_THIS, JAV_RMJ_RUNTIME_EXCEPTION, JAV_RUNTIME, JAV_RUNTIME_EXCEPTION, JAV_SERIALIZABLE, JAV_STATIC_INIT, JAV_STRING, JAV_STRINGBUFFER, JAV_SUPER, JAV_THIS, JAV_THROWABLE, MJ_ANCHOR, NULLITY_MODS, OPE_BAND, OPE_BNOT, OPE_BOR, OPE_BSR, OPE_BXOR, OPE_EQ, OPE_GE, OPE_GT, OPE_LAND, OPE_LE, OPE_LNOT, OPE_LOR, OPE_LT, OPE_MINUS, OPE_NE, OPE_PERCENT, OPE_PLUS, OPE_POSTDEC, OPE_POSTINC, OPE_PREDEC, OPE_PREINC, OPE_SIMPLE, OPE_SL, OPE_SLASH, OPE_SR, OPE_STAR, TID_ARRAY, TID_BOOLEAN, TID_BYTE, TID_CHAR, TID_CLASS, TID_DOUBLE, TID_FLOAT, TID_INT, TID_LONG, TID_MAX, TID_SHORT, TID_VOID, UNIV_ARRAY_TMP, UNIV_TMP
 
Fields inherited from interface org.multijava.util.classfile.Constants
ACC_ABSTRACT, ACC_FINAL, ACC_INTERFACE, ACC_NATIVE, ACC_PRIVATE, ACC_PROTECTED, ACC_PUBLIC, ACC_STATIC, ACC_STRICT, ACC_SUPER, ACC_SYNCHRONIZED, ACC_SYNTHETIC, ACC_TRANSIENT, ACC_VOLATILE, ATT_ANCHOR, ATT_BRIDGE, ATT_CODE, ATT_CONSTANTVALUE, ATT_DEPRECATED, ATT_DISPATCHER, ATT_EXCEPTIONS, ATT_GENERIC, ATT_GENERIC_FUNCTIONS, ATT_INNERCLASSES, ATT_LINENUMBERTABLE, ATT_LOCALVARIABLETABLE, ATT_MM_BODY, ATT_REDIRECTOR, ATT_RMJ_GLUE, ATT_RMJ_SIGNATURE, ATT_RUNTIME_VISIBLE_ANNOTATIONS, ATT_RUNTIME_VISIBLE_PARAMETER_ANNOTATIONS, ATT_SIGNATURE, ATT_SOURCEFILE, ATT_SYNTHETIC, ATT_UNIVERSE_FIELD, ATT_UNIVERSE_METHOD, ATT_UNIVERSE_VERSION, CST_CLASS, CST_DOUBLE, CST_FIELD, CST_FLOAT, CST_INTEGER, CST_INTERFACEMETHOD, CST_LONG, CST_METHOD, CST_NAMEANDTYPE, CST_STRING, CST_UTF8, ENV_DEBUG_MODE, ENV_USE_CACHE, JAVA_MAGIC, JAVA_MAJOR, JAVA_MINOR, MAX_CODE_PER_METHOD, 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_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_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_dup2, opc_dup2_x1, opc_dup2_x2, opc_dup_x1, opc_dup_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_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_ladd, opc_laload, opc_land, opc_lastore, opc_lcmp, opc_lconst_0, opc_lconst_1, opc_ldc, opc_ldc2_w, opc_ldc_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_wide, opc_xxxunusedxxx, POO_ASCII_CONSTANT, POO_CLASS_CONSTANT, POO_DOUBLE_CONSTANT, POO_FLOAT_CONSTANT, POO_INTEGER_CONSTANT, POO_LONG_CONSTANT, POO_NAT_CONSTANT, POO_REF_CONSTANT, POO_STRING_CONSTANT, TYP_ADDRESS, TYP_DOUBLE, TYP_FLOAT, TYP_INT, TYP_LONG, TYP_REFERENCE, TYP_VOID
 
Constructor Summary
JFieldDeclaration(TokenReference where, JVariableDefinition variable, JavadocComment javadoc, JavaStyleComment[] comments)
          Construct a node in the parsing tree This method is directly called by the parser
 
Method Summary
 void accept(MjcVisitor p)
          Accepts the specified visitor
 CSourceField checkInterface(CClassContextType context)
          Checks the basic interfaces to make sure things generally look OK.
 void genCode(CodeSequence code)
          Generates a sequence of bytecodes
 JExpression getInitializer()
           
 CType getType()
          Returns the type of this field
 boolean hasInitializer()
          Returns true if this field declarator has initializer (should be initialized)
 String ident()
          Returns the identifier of this field declaration
 boolean isDeclaredNonNull()
           
 boolean isNonNull(CContextType context)
           
protected  CSourceField makeFieldSignature(CClass owner)
          Generates the signature object for this class declaration.
 long modifiers()
          Returns the modifiers of this field declaration
 boolean needInitialization()
          Returns true if this field need to be initialized WARNING: this method returns true when initial value corresponds to a default value ====> a second check should be made after typecheck to ensure that an initialization is really needed
 void setInitializer(JExpression expr)
          Sets the initialization expression for this field.
 void setNonNull()
          Make this declarator (implicitly) non-null.
 void typecheck(CFlowControlContextType context)
          Checks whether this field declaration includes a field initializer and mutates the context to store this information about the field.
 JVariableDefinition variable()
           
 
Methods inherited from class org.multijava.mjc.JMemberDeclaration
genComments, getCClass, getField, getMethod, isDeprecated, javadocComment, setInterface
 
Methods inherited from class org.multijava.mjc.JPhylum
check, check, check, check, fail, fail, fail, warn, warn, warn, warn
 
Methods inherited from class org.multijava.util.compiler.Phylum
getTokenReference, setTokenReference
 
Methods inherited from class org.multijava.util.Utils
assertTrue, assertTrue, combineArrays, escapeString, escapeString, fail, fail, getFilePath, hasFlag, hasOtherFlags, parsePathParts, relativePathTo, splitQualifiedName, splitQualifiedName, stripJavaModifiers, stripNonJavaModifiers, stripPrivateModifier, unescapeString, vectorToArray, vectorToIntArray
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 
Methods inherited from interface org.multijava.mjc.JMemberDeclarationType
genComments, getCClass, getField, getMethod, isDeprecated
 
Methods inherited from interface org.multijava.util.compiler.PhylumType
getTokenReference, setTokenReference
 
Methods inherited from interface org.multijava.javadoc.Annotatable
javadocComment
 

Field Detail

variable

protected JVariableDefinition variable
Constructor Detail

JFieldDeclaration

public JFieldDeclaration(TokenReference where,
                         JVariableDefinition variable,
                         JavadocComment javadoc,
                         JavaStyleComment[] comments)
Construct a node in the parsing tree This method is directly called by the parser

Parameters:
where - the line of this node in the source code
variable - the variable definition
javadoc - is this field deprecated
comments - non-javadoc comments for this field
Method Detail

hasInitializer

public boolean hasInitializer()
Returns true if this field declarator has initializer (should be initialized)

Specified by:
hasInitializer in interface JFieldDeclarationType

getInitializer

public JExpression getInitializer()
Returns:
the value of this field at initialization

setInitializer

public void setInitializer(JExpression expr)
Sets the initialization expression for this field.


getType

public CType getType()
Returns the type of this field

Specified by:
getType in interface JFieldDeclarationType

isDeclaredNonNull

public boolean isDeclaredNonNull()

isNonNull

public boolean isNonNull(CContextType context)

setNonNull

public void setNonNull()
Make this declarator (implicitly) non-null.


needInitialization

public boolean needInitialization()
Returns true if this field need to be initialized WARNING: this method returns true when initial value corresponds to a default value ====> a second check should be made after typecheck to ensure that an initialization is really needed

Specified by:
needInitialization in interface JFieldDeclarationType

variable

public JVariableDefinition variable()
Specified by:
variable in interface JFieldDeclarationType

modifiers

public long modifiers()
Returns the modifiers of this field declaration

Specified by:
modifiers in interface JFieldDeclarationType

ident

public String ident()
Returns the identifier of this field declaration

Specified by:
ident in interface JFieldDeclarationType

checkInterface

public CSourceField checkInterface(CClassContextType context)
                            throws PositionedError
Checks the basic interfaces to make sure things generally look OK. This pass gathers information about the type signatures of everything (imported class files, classes being compiled, methods, fields, etc...) needed for the later passes. This information is stored in a context hierarchy that is bound to the AST.

Specified by:
checkInterface in interface JFieldDeclarationType
Throws:
PositionedError - an error with reference to the source file

makeFieldSignature

protected CSourceField makeFieldSignature(CClass owner)
Generates the signature object for this class declaration.

Parameters:
owner - the class signature singleton for the logical outer class of this, or null if this is a top level declaration

typecheck

public void typecheck(CFlowControlContextType context)
               throws PositionedError
Checks whether this field declaration includes a field initializer and mutates the context to store this information about the field. Records the value of a compile-time constant initializer.

Specified by:
typecheck in interface JFieldDeclarationType
Parameters:
context - the context in which this field is declared
Throws:
PositionedError - if any checks fail

accept

public void accept(MjcVisitor p)
Accepts the specified visitor

Specified by:
accept in interface JMemberDeclarationType
Parameters:
p - the visitor

genCode

public void genCode(CodeSequence code)
Generates a sequence of bytecodes

Specified by:
genCode in interface JFieldDeclarationType
Parameters:
code - the code list

mjc

mjc is Copyright (C) 2000-2004 by Iowa State University and is distributed under the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. mjc is based in part on the Kopi project Copyright (C) 1990-99 DMS Decision Management Systems Ges.m.b.H.