org.multijava.mjc
Class JLoopStatement

java.lang.Object
  org.multijava.util.Utils
      org.multijava.util.compiler.Phylum
          org.multijava.mjc.JPhylum
              org.multijava.mjc.JStatement
                  org.multijava.mjc.JLoopStatement

All Implemented Interfaces:

Cloneable, Constants, Constants, PhylumType

Direct Known Subclasses:

JDoStatement, JForStatement, JWhileStatement

public abstract class JLoopStatement

extends JStatement

This abstract class is the superclass for all the classes representing loop statements in the AST.

Field Summary
private  CFlowControlContextType	breakContextSummary
private  boolean	breaked
protected  CFlowControlContextType	continueContext           Tracks the flow control analysis information for all control paths that may exist the body of the loop via a continue statement.
private  CodeLabel	contLabel
private  CodeLabel	endLabel

 

Fields inherited from class org.multijava.mjc.JStatement

 

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

JLoopStatement(TokenReference where, JavaStyleComment[] comments)           Construct a node in the parsing tree

 

Method Summary
boolean	acceptsBreak()           Returns true iff this statement is a possible target for a break statement.
boolean	acceptsContinue()           Returns true iff this statement is a possible target for a continue statement.
void	addBreak(CFlowControlContextType context)           Registers that there is a break statement within this loop.
void	addContinue(CFlowControlContextType context)           Registers that there is a continue statement within this loop.
CFlowControlContextType	getBreakContextSummary()           Returns a summary of all break context
CodeLabel	getBreakLabel()           Return the end of this block (for break statement)
CodeLabel	getContinueLabel()           Return the beginning of this block (for continue statement)
boolean	hasBreak()           Returns true if this loop statement may be broken

 

Methods inherited from class org.multijava.mjc.JStatement

accept, fail, genCode, getComments, typecheck

 

Methods inherited from class org.multijava.mjc.JPhylum

check, check, check, check, 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

 

Field Detail

breakContextSummary

private CFlowControlContextType breakContextSummary

breaked

private boolean breaked

contLabel

private CodeLabel contLabel

endLabel

private CodeLabel endLabel

continueContext

protected CFlowControlContextType continueContext

Tracks the flow control analysis information for all control paths that may exist the body of the loop via a continue statement.

JLoopStatement

public JLoopStatement(TokenReference where,
                      JavaStyleComment[] comments)

Construct a node in the parsing tree

Parameters:

where - the line of this node in the source code

comments - the comments associated with this statement

acceptsBreak

public boolean acceptsBreak()

Returns true iff this statement is a possible target for a break statement.

Overrides:

acceptsBreak in class JStatement

acceptsContinue

public boolean acceptsContinue()

Returns true iff this statement is a possible target for a continue statement.

Overrides:

acceptsContinue in class JStatement

addBreak

public void addBreak(CFlowControlContextType context)

Registers that there is a break statement within this loop. Stores a clone of the context state up to the break statement that invoked this. In the event of multiple breaks within this loop the contexts are merged to perform reachability and definite assignment analysis.

Overrides:

addBreak in class JStatement

addContinue

public void addContinue(CFlowControlContextType context)

Registers that there is a continue statement within this loop.

Overrides:

addContinue in class JStatement

hasBreak

public boolean hasBreak()

Returns true if this loop statement may be broken

getBreakContextSummary

public CFlowControlContextType getBreakContextSummary()

Returns a summary of all break context

getBreakLabel

public CodeLabel getBreakLabel()

Return the end of this block (for break statement)

Overrides:

getBreakLabel in class JStatement

getContinueLabel

public CodeLabel getContinueLabel()

Return the beginning of this block (for continue statement)

Overrides:

getContinueLabel in class JStatement