sun.tools.tree

Class FieldExpression

java.lang.Object

sun.tools.tree.Node

sun.tools.tree.Expression

sun.tools.tree.UnaryExpression

sun.tools.tree.FieldExpression

All Implemented Interfaces:

Cloneable, Constants, RuntimeConstants

public class FieldExpression
extends UnaryExpression

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.

Field Summary

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

Constructor and Description
FieldExpression(long where, Expression right, Identifier id) constructor
FieldExpression(long where, Expression right, MemberDefinition field)

Method Summary

Methods

Modifier and Type	Method and Description
Vset	checkAmbigName(Environment env, Context ctx, Vset vset, Hashtable<Object,Object> exp, UnaryExpression loc) Check if the present name is part of a scoping prefix.
Vset	checkAssignOp(Environment env, Context ctx, Vset vset, Hashtable<Object,Object> exp, Expression outside) Check the expression if it appears on the LHS of an op= expression
static Vset	checkFinalAssign(Environment env, Context ctx, Vset vset, long where, MemberDefinition field) There is a simple assignment being made to the given final field.
Vset	checkLHS(Environment env, Context ctx, Vset vset, Hashtable<Object,Object> exp) Check the expression if it appears on the LHS of an assignment
Vset	checkValue(Environment env, Context ctx, Vset vset, Hashtable<Object,Object> exp) Check the expression
void	codeValue(Environment env, Context ctx, Assembler asm)
Expression	copyInline(Context ctx) Create a copy of the expression for method inlining
int	costInline(int thresh, Environment env, Context ctx) The cost of inlining this expression
sun.tools.tree.FieldUpdater	getAssigner(Environment env, Context ctx) Return a FieldUpdater object to be used in updating the value of the location denoted by this, which must be an expression suitable for the left-hand side of an assignment.
Expression	getImplementation() Type checking may assign a more complex implementation to an innocuous-looking expression (like an identifier).
sun.tools.tree.FieldUpdater	getUpdater(Environment env, Context ctx) Return a FieldUpdater object to be used in updating the value of the location denoted by this, which must be an expression suitable for the left-hand side of an assignment.
Expression	inline(Environment env, Context ctx) Inline
Expression	inlineLHS(Environment env, Context ctx)
Expression	inlineValue(Environment env, Context ctx)
boolean	isConstant() Check if constant: Will it inline away?
void	print(PrintStream out) Print
static Identifier	toIdentifier(Expression e) Convert an '.' expression to a qualified identifier

Methods inherited from class sun.tools.tree.UnaryExpression

order

Methods inherited from class sun.tools.tree.Expression

check, checkCondition, checkCondition, checkInitializer, code, equals, equals, equals, equals, equalsDefault, firstConstructor, fitsType, fitsType, getType, getValue, inlineValueSB, isNonNull, isNull

Methods inherited from class sun.tools.tree.Node

clone, convert, getOp, getWhere, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

FieldExpression

public FieldExpression(long where,
               Expression right,
               Identifier id)

constructor

FieldExpression

public FieldExpression(long where,
               Expression right,
               MemberDefinition field)

Method Detail

getImplementation

public Expression getImplementation()

Description copied from class: Expression

Type checking may assign a more complex implementation to an innocuous-looking expression (like an identifier). Return that implementation, or the original expression itself if there is no special implementation.

This appears at present to be dead code, and is not called from within javac. Access to the implementation generally occurs within the same class, and thus uses the underlying field directly.

Overrides:

getImplementation in class Expression

toIdentifier

public static Identifier toIdentifier(Expression e)

Convert an '.' expression to a qualified identifier

checkAmbigName

public Vset checkAmbigName(Environment env,
                  Context ctx,
                  Vset vset,
                  Hashtable<Object,Object> exp,
                  UnaryExpression loc)

Check if the present name is part of a scoping prefix.

Overrides:

checkAmbigName in class Expression

checkValue

public Vset checkValue(Environment env,
              Context ctx,
              Vset vset,
              Hashtable<Object,Object> exp)

Check the expression

Overrides:

checkValue in class UnaryExpression

getAssigner

public sun.tools.tree.FieldUpdater getAssigner(Environment env,
                                      Context ctx)

Return a FieldUpdater object to be used in updating the value of the location denoted by this, which must be an expression suitable for the left-hand side of an assignment. This is used for implementing assignments to private fields for which an access method is required. Returns null if no access method is needed, in which case the assignment is handled in the usual way, by direct access. Only simple assignment expressions are handled here Assignment operators and pre/post increment/decrement operators are are handled by 'getUpdater' below.

Must be called after 'checkValue', else 'right' will be invalid.

Overrides:

getAssigner in class Expression

getUpdater

public sun.tools.tree.FieldUpdater getUpdater(Environment env,
                                     Context ctx)

Return a FieldUpdater object to be used in updating the value of the location denoted by this, which must be an expression suitable for the left-hand side of an assignment. This is used for implementing the assignment operators and the increment and decrement operators on private fields that are accessed from another class, e.g, uplevel from an inner class. Returns null if no access method is needed.

Must be called after 'checkValue', else 'right' will be invalid.

Overrides:

getUpdater in class Expression

checkLHS

public Vset checkLHS(Environment env,
            Context ctx,
            Vset vset,
            Hashtable<Object,Object> exp)

Check the expression if it appears on the LHS of an assignment

Overrides:

checkLHS in class Expression

checkAssignOp

public Vset checkAssignOp(Environment env,
                 Context ctx,
                 Vset vset,
                 Hashtable<Object,Object> exp,
                 Expression outside)

Check the expression if it appears on the LHS of an op= expression

Overrides:

checkAssignOp in class Expression

checkFinalAssign

public static Vset checkFinalAssign(Environment env,
                    Context ctx,
                    Vset vset,
                    long where,
                    MemberDefinition field)

There is a simple assignment being made to the given final field. The field was named either by a simple name or by an almost-simple expression of the form "this.v". Check if this is a legal assignment.

Blank final variables can be set in initializers or constructor bodies. In all cases there must be definite single assignment. (All instance and instance variable initializers and each constructor body are treated as if concatenated for the purposes of this check. Assignment to "this.x" is treated as a definite assignment to the simple name "x" which names the instance variable.)

isConstant

public boolean isConstant()

Check if constant: Will it inline away?

Overrides:

isConstant in class UnaryExpression

inline

public Expression inline(Environment env,
                Context ctx)

Inline

Overrides:

inline in class UnaryExpression

inlineValue

public Expression inlineValue(Environment env,
                     Context ctx)

Overrides:

inlineValue in class UnaryExpression

inlineLHS

public Expression inlineLHS(Environment env,
                   Context ctx)

Overrides:

inlineLHS in class Expression

copyInline

public Expression copyInline(Context ctx)

Description copied from class: UnaryExpression

Create a copy of the expression for method inlining

Overrides:

copyInline in class UnaryExpression

costInline

public int costInline(int thresh,
             Environment env,
             Context ctx)

The cost of inlining this expression

Overrides:

costInline in class UnaryExpression

codeValue

public void codeValue(Environment env,
             Context ctx,
             Assembler asm)

Overrides:

codeValue in class Expression

print

public void print(PrintStream out)

Print

Overrides:

print in class UnaryExpression