File	Doc	Category	Size	Date	Package
VMOp.java	API Doc	Glassfish v2 API	27581	Fri May 04 22:34:28 BST 2007	com.sun.jdo.api.persistence.enhancer.classfile

VMOp

• java.lang.Object

Fields Summary
private int	opcodeValue
private String	opcodeName
private int	stackArgs
private int	stackResults
private String	stackArgTypes
private String	stackResultTypes
static VMOp[]	ops

Constructors Summary
public VMOp(int theOpcode, String theOpcodeName, int nArgs, int nResults, String argDescr, String resultDescr) constructor for a VMOp opcodeValue = theOpcode; opcodeName = theOpcodeName; stackArgs = nArgs; stackResults = nResults; stackArgTypes = argDescr; stackResultTypes = resultDescr;

Methods Summary
public final java.lang.String	argTypes() Return the type descriptor for the stack arguments to the operation. return stackArgTypes;
private static void	check() Check that each entry in the ops array has a valid VMOp entry //NOI18N for (int i=0; i<=opc_jsr_w; i++) { VMOp op = ops[i]; if (op == null) throw new InsnError ("null VMOp for " + i);//NOI18N if (op.opcode() != i) throw new InsnError ("bad opcode for " + i);//NOI18N if (1 == 0) { /* check arg/result data */ checkTypes(op.argTypes(), op.nStackArgs(), op); checkTypes(op.resultTypes(), op.nStackResults(), op); } }
private static void	checkTypes(java.lang.String types, int n, com.sun.jdo.api.persistence.enhancer.classfile.VMOp op) for (int i=0; i<types.length(); i++) { char c = types.charAt(i); if (c == '?") return; if (c == 'J" || c == 'X" || c == 'D") n -= 2; else n -= 1; } if (n != 0) throw new InsnError ("Bad arg/result for VMOp " + op.opcodeName);//NOI18N
public final int	nStackArgs() Return the number of words of stack arguments expected by this operation. If the number is not a fixed value, return -1; return stackArgs;
public final int	nStackResults() Return the number of words of stack results produced by this operation. If the number is not a fixed value, return -1; return stackResults;
public final java.lang.String	name() Return the opcode name return opcodeName;
public final int	opcode() Return the opcode value return opcodeValue;
public final java.lang.String	resultTypes() Return the type descriptor for the stack results of the operation. return stackResultTypes;