at.dms.kjc
Class JBinaryExpression

java.lang.Object
  |
  +--at.dms.util.Utils
        |
        +--at.dms.compiler.Phylum
              |
              +--at.dms.kjc.JPhylum
                    |
                    +--at.dms.kjc.JExpression
                          |
                          +--at.dms.kjc.JBinaryExpression
All Implemented Interfaces:
Constants, Constants
Direct Known Subclasses:
JAssignmentExpression, JBinaryArithmeticExpression, JConditionalAndExpression, JConditionalOrExpression, JEqualityExpression, JRelationalExpression

public abstract class JBinaryExpression
extends JExpression

This class is an abstract root class for binary expressions Here are conversion method following JLS 5.6.2


Field Summary
protected  JExpression left
           
protected  JExpression right
           
protected  CType type
           
 
Fields inherited from class at.dms.kjc.JExpression
EMPTY
 
Fields inherited from class at.dms.util.Utils
DBG_LEVEL_HIGH, DBG_LEVEL_LOW, DBG_LEVEL_NO
 
Fields inherited from interface at.dms.kjc.Constants
CMP_VERSION, JAV_CLASS, JAV_CLONE, JAV_CLONEABLE, JAV_CONSTRUCTOR, JAV_ERROR, JAV_EXCEPTION, JAV_INIT, JAV_LENGTH, JAV_NAME_SEPARATOR, JAV_OBJECT, JAV_OUTER_THIS, JAV_RUNTIME, JAV_RUNTIME_EXCEPTION, JAV_STATIC_INIT, JAV_STRING, JAV_STRINGBUFFER, JAV_THIS, JAV_THROWABLE, OPE_BAND, OPE_BNOT, OPE_BOR, OPE_BSR, OPE_BXOR, OPE_EQ, OPE_GE, OPE_GT, OPE_LE, OPE_LNOT, 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_SHORT, TID_VOID
 
Fields inherited from interface at.dms.classfile.Constants
ACC_ABSTRACT, ACC_FINAL, ACC_INTERFACE, ACC_NATIVE, ACC_NBR_FLAGS, ACC_PRIVATE, ACC_PROTECTED, ACC_PUBLIC, ACC_STATIC, ACC_STRICT, ACC_SUPER, ACC_SYNCHRONIZED, ACC_TRANSIENT, ACC_VOLATILE, ATT_CODE, ATT_CONSTANTVALUE, ATT_DEPRECATED, ATT_EXCEPTIONS, ATT_GENERIC, ATT_INNERCLASSES, ATT_LINENUMBERTABLE, ATT_LOCALVARIABLETABLE, ATT_SOURCEFILE, ATT_SYNTHETIC, 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_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_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_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_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
JBinaryExpression(TokenReference where, JExpression left, JExpression right)
          Construct a node in the parsing tree This method is directly called by the parser
 
Method Summary
 void genBooleanResultCode(CodeSequence code)
          Generates a sequence of bytecodes
 void genBranch(boolean cond, CodeSequence code, CodeLabel label)
          Generates a sequence of bytecodes to branch on a label This method helps to handle heavy optimizables conditions
protected  void genBranch(JExpression left, JExpression right, boolean cond, CodeSequence code, CodeLabel label)
          Optimize a bi-conditional expression
 JExpression getLeft()
          Returns the left side of this binary expression.
 JExpression getRight()
          Returns the right side of this binary expression.
 CType getType()
          Returns the type of the whole expression.
 CType promote(CExpressionContext context)
          Apply binary numeric promotion (JLS2 5.6.2)
protected  void setLeft(JExpression left)
          Sets the left side of the expression.
protected  void setRight(JExpression right)
          Sets the right side of the expression.
protected  void setType(CType type)
          Sets the type of the whole expression.
 
Methods inherited from class at.dms.kjc.JExpression
accept, checkExpression, checkExpression, convertType, fail, genCode, getBooleanLiteral, getLiteral, getNumberLiteral, getOrdinalLiteral, getRealLiteral, getStringLiteral, isAssignableTo, isConstant, isLiteral, isStatementExpression, isSubTypePossible, setConstant, unParenthesize
 
Methods inherited from class at.dms.kjc.JPhylum
check, check, check, check
 
Methods inherited from class at.dms.compiler.Phylum
getTokenReference, setTokenReference
 
Methods inherited from class at.dms.util.Utils
assert, assert, fail, fail, hasFlag, hasMoreThanOneFlag, hasOtherFlags, splitQualifiedName, splitQualifiedName, vectorToArray, vectorToIntArray
 
Methods inherited from class java.lang.Object
, clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

type

protected CType type

left

protected JExpression left

right

protected JExpression right
Constructor Detail

JBinaryExpression

public JBinaryExpression(TokenReference where,
                         JExpression left,
                         JExpression right)
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
p1 - left operand
p2 - right operand
Method Detail

getType

public CType getType()
Returns the type of the whole expression.
Overrides:
getType in class JExpression
Returns:
the type of this expression

setType

protected void setType(CType type)
Sets the type of the whole expression. Must only be done by code that is responsible for determining the type.
Returns:
the type of this expression

getLeft

public JExpression getLeft()
Returns the left side of this binary expression.

setLeft

protected void setLeft(JExpression left)
Sets the left side of the expression. Must only be done when this class expects it to happen. This method is protected because only this class and subclasses can reasonably know when this is.

getRight

public JExpression getRight()
Returns the right side of this binary expression.

setRight

protected void setRight(JExpression right)
Sets the right side of the expression. Must only be done when this class expects it to happen. This method is protected because only this class and subclasses can reasonably know when this is.

promote

public CType promote(CExpressionContext context)
              throws PositionedError
Apply binary numeric promotion (JLS2 5.6.2)
Parameters:
context - the context of the evaluation of this expression.
Returns:
the type after promotion
Throws:
PositionedError - an error occurred

genBooleanResultCode

public void genBooleanResultCode(CodeSequence code)
Generates a sequence of bytecodes
Parameters:
code - the code list

genBranch

public void genBranch(boolean cond,
                      CodeSequence code,
                      CodeLabel label)
Generates a sequence of bytecodes to branch on a label This method helps to handle heavy optimizables conditions
Overrides:
genBranch in class JExpression
Parameters:
code - the code list

genBranch

protected void genBranch(JExpression left,
                         JExpression right,
                         boolean cond,
                         CodeSequence code,
                         CodeLabel label)
Optimize a bi-conditional expression