Package javassist.compiler

Class JvstCodeGen

java.lang.Object

javassist.compiler.ast.Visitor

javassist.compiler.CodeGen

javassist.compiler.MemberCodeGen

javassist.compiler.JvstCodeGen

All Implemented Interfaces:

Opcode, TokenId

public class JvstCodeGen
extends MemberCodeGen

Nested Class Summary

Nested classes/interfaces inherited from class javassist.compiler.MemberCodeGen

MemberCodeGen.JsrHook, MemberCodeGen.JsrHook2

Nested classes/interfaces inherited from class javassist.compiler.CodeGen

CodeGen.ReturnHook

Field Summary

Fields

Modifier and Type	Field	Description
static final String	cflowName
static final String	clazzName
private CtClass	dollarType
static final String	dollarTypeName
private String	param0Type
(package private) String	paramArrayName
(package private) String	paramListName
(package private) CtClass[]	paramTypeList
private int	paramVarBase
(package private) String	proceedName
(package private) ProceedHandler	procHandler
(package private) String	returnCastName
(package private) CtClass	returnType
private String	returnVarName
static final String	sigName
private boolean	useParam0
static final String	wrapperCastName

Fields inherited from class javassist.compiler.MemberCodeGen

resolver, resultStatic, thisClass, thisMethod

Fields inherited from class javassist.compiler.CodeGen

arrayDim, binOp, breakList, bytecode, className, continueList, exprType, hasReturned, inStaticMethod, javaLangObject, javaLangString, jvmJavaLangObject, jvmJavaLangString, returnHooks, typeChecker

Fields inherited from interface javassist.bytecode.Opcode

AALOAD, AASTORE, ACONST_NULL, ALOAD, ALOAD_0, ALOAD_1, ALOAD_2, ALOAD_3, ANEWARRAY, ARETURN, ARRAYLENGTH, ASTORE, ASTORE_0, ASTORE_1, ASTORE_2, ASTORE_3, ATHROW, BALOAD, BASTORE, BIPUSH, CALOAD, CASTORE, CHECKCAST, D2F, D2I, D2L, DADD, DALOAD, DASTORE, DCMPG, DCMPL, DCONST_0, DCONST_1, DDIV, DLOAD, DLOAD_0, DLOAD_1, DLOAD_2, DLOAD_3, DMUL, DNEG, DREM, DRETURN, DSTORE, DSTORE_0, DSTORE_1, DSTORE_2, DSTORE_3, DSUB, DUP, DUP_X1, DUP_X2, DUP2, DUP2_X1, DUP2_X2, F2D, F2I, F2L, FADD, FALOAD, FASTORE, FCMPG, FCMPL, FCONST_0, FCONST_1, FCONST_2, FDIV, FLOAD, FLOAD_0, FLOAD_1, FLOAD_2, FLOAD_3, FMUL, FNEG, FREM, FRETURN, FSTORE, FSTORE_0, FSTORE_1, FSTORE_2, FSTORE_3, FSUB, GETFIELD, GETSTATIC, GOTO, GOTO_W, I2B, I2C, I2D, I2F, I2L, I2S, IADD, IALOAD, IAND, IASTORE, ICONST_0, ICONST_1, ICONST_2, ICONST_3, ICONST_4, ICONST_5, ICONST_M1, IDIV, IF_ACMPEQ, IF_ACMPNE, IF_ICMPEQ, IF_ICMPGE, IF_ICMPGT, IF_ICMPLE, IF_ICMPLT, IF_ICMPNE, IFEQ, IFGE, IFGT, IFLE, IFLT, IFNE, IFNONNULL, IFNULL, IINC, ILOAD, ILOAD_0, ILOAD_1, ILOAD_2, ILOAD_3, IMUL, INEG, INSTANCEOF, INVOKEDYNAMIC, INVOKEINTERFACE, INVOKESPECIAL, INVOKESTATIC, INVOKEVIRTUAL, IOR, IREM, IRETURN, ISHL, ISHR, ISTORE, ISTORE_0, ISTORE_1, ISTORE_2, ISTORE_3, ISUB, IUSHR, IXOR, JSR, JSR_W, L2D, L2F, L2I, LADD, LALOAD, LAND, LASTORE, LCMP, LCONST_0, LCONST_1, LDC, LDC_W, LDC2_W, LDIV, LLOAD, LLOAD_0, LLOAD_1, LLOAD_2, LLOAD_3, LMUL, LNEG, LOOKUPSWITCH, LOR, LREM, LRETURN, LSHL, LSHR, LSTORE, LSTORE_0, LSTORE_1, LSTORE_2, LSTORE_3, LSUB, LUSHR, LXOR, MONITORENTER, MONITOREXIT, MULTIANEWARRAY, NEW, NEWARRAY, NOP, POP, POP2, PUTFIELD, PUTSTATIC, RET, RETURN, SALOAD, SASTORE, SIPUSH, STACK_GROW, SWAP, T_BOOLEAN, T_BYTE, T_CHAR, T_DOUBLE, T_FLOAT, T_INT, T_LONG, T_SHORT, TABLESWITCH, WIDE

Fields inherited from interface javassist.compiler.TokenId

ABSTRACT, AND_E, ANDAND, ARRAY, ARSHIFT, ARSHIFT_E, assignOps, BadToken, BLOCK, BOOLEAN, BREAK, BYTE, CALL, CASE, CATCH, CHAR, CharConstant, CLASS, CONST, CONTINUE, DECL, DEFAULT, DIV_E, DO, DOUBLE, DoubleConstant, ELSE, EQ, EXOR_E, EXPR, EXTENDS, FALSE, FINAL, FINALLY, FLOAT, FloatConstant, FOR, GE, GOTO, Identifier, IF, IMPLEMENTS, IMPORT, INSTANCEOF, INT, IntConstant, INTERFACE, LABEL, LE, LONG, LongConstant, LSHIFT, LSHIFT_E, MEMBER, MINUS_E, MINUSMINUS, MOD_E, MUL_E, NATIVE, NEQ, NEW, NULL, opNames, OR_E, OROR, PACKAGE, PLUS_E, PLUSPLUS, PRIVATE, PROTECTED, PUBLIC, RETURN, RSHIFT, RSHIFT_E, SHORT, STATIC, STRICT, StringL, SUPER, SWITCH, SYNCHRONIZED, THIS, THROW, THROWS, TRANSIENT, TRUE, TRY, VOID, VOLATILE, WHILE

Constructor Summary

Constructors

Constructor	Description
JvstCodeGen(Bytecode b, CtClass cc, ClassPool cp)

Method Summary

Modifier and Type	Method	Description
void	addNullIfVoid()
protected void	atAssignParamList(CtClass[] params, Bytecode code)
void	atCallExpr(CallExpr expr)
void	atCastExpr(CastExpr expr)
protected void	atCastToRtype(CastExpr expr)	Inserts a cast operator to the return type.
protected void	atCastToWrapper(CastExpr expr)
protected void	atCflow(ASTList cname)
protected void	atFieldAssign(Expr expr, int op, ASTree left, ASTree right, boolean doDup)
void	atMember(Member mem)
void	atMethodArgs(ASTList args, int[] types, int[] dims, String[] cnames)
protected void	atReturnStmnt(Stmnt st)
private void	callGetType(String method)
(package private) void	compileInvokeSpecial(ASTree target, int methodIndex, String descriptor, ASTList args)
static int	compileParameterList(Bytecode code, CtClass[] params, int regno)
protected void	compileUnwrapValue(CtClass type, Bytecode code)
void	doNumCast(CtClass type)
int	getMethodArgsLength(ASTList args)
private int	indexOfParam1()
boolean	isParamListName(ASTList args)
private static void	makeCflowName(StringBuilder sbuf, ASTree name)
int	recordParams(CtClass[] params, boolean isStatic, String prefix, String paramVarName, String paramsName, boolean use0, int paramBase, String target, SymbolTable tbl)	Makes method parameters $0, $1, ..., $args, $$, and $class available.
int	recordParams(CtClass[] params, boolean isStatic, String prefix, String paramVarName, String paramsName, SymbolTable tbl)	Makes method parameters $0, $1, ..., $args, $$, and $class available.
int	recordReturnType(CtClass type, String castName, String resultName, SymbolTable tbl)	Makes a cast to the return type ($r) available.
void	recordType(CtClass t)	Makes $type available.
private int	recordVar(CtClass cc, String varName, int varNo, SymbolTable tbl)
void	recordVariable(String typeDesc, String varName, int varNo, SymbolTable tbl)	Makes the given variable name available.
int	recordVariable(CtClass type, String varName, SymbolTable tbl)	Makes the given variable name available.
void	setProceedHandler(ProceedHandler h, String name)
void	setType(CtClass type)
private void	setType(CtClass type, int dim)

Methods inherited from class javassist.compiler.MemberCodeGen

atArrayInit, atArrayVariableAssign, atClassObject2, atFieldPlusPlus, atFieldRead, atMethodCallCore, atMultiNewArray, atNewArrayExpr, atNewExpr, atTryStmnt, fieldAccess, getAccessibleConstructor, getAccessiblePrivate, getMajorVersion, getSuperName, getThisClass, getThisName, insertDefaultSuperCall, makeParamList, makeThrowsList, resolveClassName, resolveClassName, setReturnType, setThisMethod

Methods inherited from class javassist.compiler.CodeGen

arrayAccess, atArrayPlusPlus, atArrayRead, atAssignCore, atAssignExpr, atAssignExpr, atASTList, atBinExpr, atClassObject, atCondExpr, atDeclarator, atDoubleConst, atExpr, atFieldDecl, atInstanceOfExpr, atIntConst, atKeyword, atMethodBody, atMethodDecl, atNumCastExpr, atPair, atPlusPlusCore, atReturnStmnt2, atStmnt, atStringL, atSymbol, atVariable, badAssign, badType, badTypes, compileBooleanExpr, compileExpr, doTypeCheck, fatal, getArrayReadOp, getArrayWriteOp, getCompOperator, getLocalVar, getMaxLocals, getTempVar, incMaxLocals, is2word, isP_INT, isRefType, lookupBinOp, patchGoto, rightIsStrong, setMaxLocals, setTypeChecker, toJvmArrayName, toJvmTypeName

Methods inherited from class java.lang.Object

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

Field Details

paramArrayName

String paramArrayName

paramListName

String paramListName

paramTypeList

CtClass[] paramTypeList

paramVarBase

private int paramVarBase

useParam0

private boolean useParam0

param0Type

private String param0Type

sigName

public static final String sigName

See Also:

• Constant Field Values

dollarTypeName

public static final String dollarTypeName

See Also:

• Constant Field Values

clazzName

public static final String clazzName

See Also:

• Constant Field Values

dollarType

private CtClass dollarType

returnType

CtClass returnType

returnCastName

String returnCastName

returnVarName

private String returnVarName

wrapperCastName

public static final String wrapperCastName

See Also:

• Constant Field Values

proceedName

String proceedName

cflowName

public static final String cflowName

See Also:

• Constant Field Values

procHandler

ProceedHandler procHandler

Constructor Details

JvstCodeGen

public JvstCodeGen(Bytecode b,
 CtClass cc,
 ClassPool cp)

Method Details

indexOfParam1

private int indexOfParam1()

setProceedHandler

public void setProceedHandler(ProceedHandler h,
 String name)

addNullIfVoid

public void addNullIfVoid()

atMember

public void atMember(Member mem)
              throws CompileError

Overrides:

atMember in class MemberCodeGen

Throws:

CompileError

callGetType

private void callGetType(String method)

atFieldAssign

protected void atFieldAssign(Expr expr,
 int op,
 ASTree left,
 ASTree right,
 boolean doDup)
                      throws CompileError

Overrides:

atFieldAssign in class MemberCodeGen

Throws:

CompileError

atAssignParamList

protected void atAssignParamList(CtClass[] params,
 Bytecode code)
                          throws CompileError

Throws:

CompileError

atCastExpr

public void atCastExpr(CastExpr expr)
                throws CompileError

Overrides:

atCastExpr in class CodeGen

Throws:

CompileError

atCastToRtype

protected void atCastToRtype(CastExpr expr)
                      throws CompileError

Inserts a cast operator to the return type. If the return type is void, this does nothing.

Throws:

CompileError

atCastToWrapper

protected void atCastToWrapper(CastExpr expr)
                        throws CompileError

Throws:

CompileError

atCallExpr

public void atCallExpr(CallExpr expr)
                throws CompileError

Overrides:

atCallExpr in class MemberCodeGen

Throws:

CompileError

atCflow

protected void atCflow(ASTList cname)
                throws CompileError

Throws:

CompileError

makeCflowName

private static void makeCflowName(StringBuilder sbuf,
 ASTree name)
                           throws CompileError

Throws:

CompileError

isParamListName

public boolean isParamListName(ASTList args)

getMethodArgsLength

public int getMethodArgsLength(ASTList args)

Overrides:

getMethodArgsLength in class MemberCodeGen

atMethodArgs

public void atMethodArgs(ASTList args,
 int[] types,
 int[] dims,
 String[] cnames)
                  throws CompileError

Overrides:

atMethodArgs in class MemberCodeGen

Throws:

CompileError

compileInvokeSpecial

void compileInvokeSpecial(ASTree target,
 int methodIndex,
 String descriptor,
 ASTList args)
                   throws CompileError

Throws:

CompileError

atReturnStmnt

protected void atReturnStmnt(Stmnt st)
                      throws CompileError

Overrides:

atReturnStmnt in class CodeGen

Throws:

CompileError

recordReturnType

public int recordReturnType(CtClass type,
 String castName,
 String resultName,
 SymbolTable tbl)
                     throws CompileError

Makes a cast to the return type ($r) available. It also enables $_.

If the return type is void, ($r) does nothing. The type of $_ is java.lang.Object.

Parameters:

resultName - null if $_ is not used.

Returns:

-1 or the variable index assigned to $_.

Throws:

CompileError

recordType

public void recordType(CtClass t)

Makes $type available.

recordParams

public int recordParams(CtClass[] params,
 boolean isStatic,
 String prefix,
 String paramVarName,
 String paramsName,
 SymbolTable tbl)
                 throws CompileError

Makes method parameters $0, $1, ..., $args, $$, and $class available. $0 is equivalent to THIS if the method is not static. Otherwise, if the method is static, then $0 is not available.

Throws:

CompileError

recordParams

public int recordParams(CtClass[] params,
 boolean isStatic,
 String prefix,
 String paramVarName,
 String paramsName,
 boolean use0,
 int paramBase,
 String target,
 SymbolTable tbl)
                 throws CompileError

Makes method parameters $0, $1, ..., $args, $$, and $class available. $0 is available only if use0 is true. It might not be equivalent to THIS.

Parameters:

params - the parameter types (the types of $1, $2, ..)

prefix - it must be "$" (the first letter of $0, $1, ...)

paramVarName - it must be "$args"

paramsName - it must be "$$"

use0 - true if $0 is used.

paramBase - the register number of $0 (use0 is true) or $1 (otherwise).

target - the class of $0. If use0 is false, target can be null. The value of "target" is also used as the name of the type represented by $class.

isStatic - true if the method in which the compiled bytecode is embedded is static.

Throws:

CompileError

recordVariable

public int recordVariable(CtClass type,
 String varName,
 SymbolTable tbl)
                   throws CompileError

Makes the given variable name available.

Parameters:

type - variable type

varName - variable name

Throws:

CompileError

recordVar

private int recordVar(CtClass cc,
 String varName,
 int varNo,
 SymbolTable tbl)
               throws CompileError

Throws:

CompileError

recordVariable

public void recordVariable(String typeDesc,
 String varName,
 int varNo,
 SymbolTable tbl)
                    throws CompileError

Makes the given variable name available.

Parameters:

typeDesc - the type descriptor of the variable

varName - variable name

varNo - an index into the local variable array

Throws:

CompileError

compileParameterList

public static int compileParameterList(Bytecode code,
 CtClass[] params,
 int regno)

compileUnwrapValue

protected void compileUnwrapValue(CtClass type,
 Bytecode code)
                           throws CompileError

Throws:

CompileError

setType

public void setType(CtClass type)
             throws CompileError

Throws:

CompileError

setType

private void setType(CtClass type,
 int dim)
              throws CompileError

Throws:

CompileError

doNumCast

public void doNumCast(CtClass type)
               throws CompileError

Throws:

CompileError