package org.eclipse.jdt.internal.compiler.lookup; | |
/* | |
* (c) Copyright IBM Corp. 2000, 2001. | |
* All Rights Reserved. | |
*/ | |
import org.eclipse.jdt.internal.compiler.impl.*; | |
import org.eclipse.jdt.internal.compiler.ast.*; | |
public class LocalVariableBinding extends VariableBinding { | |
public boolean isArgument; | |
public int resolvedPosition; // for code generation (position in method context) | |
public boolean used; // for flow analysis | |
public BlockScope declaringScope; // back-pointer to its declaring scope | |
public LocalDeclaration declaration; // for source-positions | |
public int[] initializationPCs; | |
public int initializationCount = 0; | |
public LocalVariableBinding(char[] name, TypeBinding type, int modifiers) { | |
this(name, type, modifiers, false); | |
} | |
public LocalVariableBinding(char[] name, TypeBinding type, int modifiers, boolean isArgument) { | |
this.name = name; | |
this.type = type; | |
this.modifiers = modifiers; | |
if (this.isArgument = isArgument) | |
this.constant = Constant.NotAConstant; | |
} | |
public LocalVariableBinding(LocalDeclaration declaration, TypeBinding type, int modifiers) { | |
this(declaration.name, type, modifiers, false); | |
this.declaration = declaration; | |
} | |
/* API | |
* Answer the receiver's binding type from Binding.BindingID. | |
*/ | |
public final int bindingType() { | |
return LOCAL; | |
} | |
// Answer whether the variable binding is a secret variable added for code gen purposes | |
public boolean isSecret() { | |
return declaration == null && !isArgument; | |
} | |
public void recordInitializationEndPC(int pc) { | |
if (initializationPCs[((initializationCount - 1) << 1) + 1] == -1) | |
initializationPCs[((initializationCount - 1) << 1) + 1] = pc; | |
} | |
public void recordInitializationStartPC(int pc) { | |
if (initializationPCs == null) | |
return; | |
// optimize cases where reopening a contiguous interval | |
if ((initializationCount > 0) && (initializationPCs[ ((initializationCount - 1) << 1) + 1] == pc)) { | |
initializationPCs[ ((initializationCount - 1) << 1) + 1] = -1; // reuse previous interval (its range will be augmented) | |
} else { | |
int index = initializationCount << 1; | |
if (index == initializationPCs.length) { | |
System.arraycopy(initializationPCs, 0, (initializationPCs = new int[initializationCount << 2]), 0, index); | |
} | |
initializationPCs[index] = pc; | |
initializationPCs[index + 1] = -1; | |
initializationCount++; | |
} | |
} | |
public String toString() { | |
String s = super.toString(); | |
if (!used) | |
s += "[pos: unused]"/*nonNLS*/; | |
else | |
s += "[pos: "/*nonNLS*/ + String.valueOf(resolvedPosition) + "]"/*nonNLS*/; | |
s += "[id:"/*nonNLS*/ + String.valueOf(id) + "]"/*nonNLS*/; | |
if (initializationCount > 0) { | |
s += "[pc: "/*nonNLS*/; | |
for (int i = 0; i < initializationCount; i++) { | |
if (i > 0) | |
s += ", "/*nonNLS*/; | |
s += String.valueOf(initializationPCs[i << 1]) + "-"/*nonNLS*/ + ((initializationPCs[(i << 1) + 1] == -1) ? "?"/*nonNLS*/ : String.valueOf(initializationPCs[(i<< 1) + 1])); | |
} | |
s += "]"/*nonNLS*/; | |
} | |
return s; | |
} | |
} |