private void installClass(CgenNode nd) {
AbstractSymbol name = nd.getName();
if (probe(name) != null) return;
nds.addElement(nd);
nodeMap.put(nd.getName(), nd);
addId(name, nd);
}
/* given a class and a method, return the offset to the class's dispatch table */
public int getMethodOffset(AbstractSymbol clazz, AbstractSymbol method) {
CgenNode nd = nodeMap.get(clazz);
if (Flags.cgen_debug) System.out.printf("getMethodOffset %s %s\n", clazz, method);
if (!nd.methOffsets.containsKey(method)) return getMethodOffset(nd.getParent(), method);
else return nd.methOffsets.get(method);
}
/* get the depth of the class in the inheritance tree */
public int getDepth(AbstractSymbol clazz) {
int depth = 0;
CgenNode nd = nodeMap.get(clazz);
while (nd.name != TreeConstants.Object_) {
nd = nd.getParentNode();
depth++;
}
return depth;
}
private void codeClassMethods() {
str.println("\n# Class Methods");
for (Object obj : nds) {
// code each of the class method
CgenNode nd = (CgenNode) obj;
nd.codeClassMethod(str);
}
}
private void codeObjInits() {
str.println("\n# Object Initializers");
for (Object obj : nds) {
CgenNode nd = (CgenNode) obj;
// code object initailzers (constructor method)
CgenSupport.emitInitRef(nd.getName(), str);
str.print(CgenSupport.LABEL);
nd.codeObjInit(str);
}
}
private void codeDispTables() {
str.println("\n# Dispatch Tables");
for (Object obj : nds) {
CgenNode nd = (CgenNode) obj;
// code class method reference
CgenSupport.emitDispTableRef(nd.getName(), str);
str.print(CgenSupport.LABEL);
nd.codeDispTab(str);
}
}
private void codeProtObjs() {
str.println("\n# Prototype Objects");
for (Object obj : nds) {
CgenNode nd = (CgenNode) obj;
// code class attributes
str.println(CgenSupport.WORD + "-1"); // GC tag
CgenSupport.emitProtObjRef(nd.getName(), str);
str.print(CgenSupport.LABEL);
nd.codeProtObj(str);
}
}
private void codeClassNameTable() {
str.println("\n# Class Name Table");
str.print(CgenSupport.CLASSNAMETAB + CgenSupport.LABEL);
// code the name of each class
for (Object obj : nds) {
str.print(CgenSupport.WORD);
((CgenNode) obj).getNameStrSym().codeRef(str);
str.println("\t# " + obj);
}
}
/* given a class and an attribute, return the offset to the object reference */
public int getAttrOffset(AbstractSymbol clazz, AbstractSymbol a) {
CgenNode nd = nodeMap.get(clazz);
if (!nd.attrOffsets.containsKey(a)) return getAttrOffset(nd.getParent(), a);
else return nd.attrOffsets.get(a);
}
private void setRelations(CgenNode nd) {
CgenNode parent = (CgenNode) probe(nd.getParent());
nd.setParentNd(parent);
parent.addChild(nd);
}