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package ast.nodes;
import ast.types.*;
import codegen.Label;
import java.util.ArrayList;
import java.util.HashMap;
import semanticanalysis.*;
/**
* Node for the `root` statement of the grammar.
*/
public class RootNode implements Node {
// stms and compundStmts are protected because they are reused for a
// BlockNode
protected ArrayList<Node> childs;
public RootNode(ArrayList<Node> childs) {
this.childs = childs;
}
@Override
public ArrayList<SemanticError> checkSemantics(SymbolTable ST, int _nesting, FunctionType ft) {
ArrayList<SemanticError> errors = new ArrayList<>();
// Create a new HashMap for the current scope
HashMap<String, STentry> HM = new HashMap<>();
// Add the HashMap to the SymbolTable
ST.add(HM);
// Check semantics for each child
for (Node child : childs) {
errors.addAll(child.checkSemantics(ST, _nesting, ft));
}
// Remove the HashMap from the SymbolTable
ST.remove();
return errors;
}
@Override
public Type typeCheck() {
return new VoidType();
}
@Override
public String codeGeneration() {
// Workaround per SP = MEM - 1
String str = "pushr FP\npushr AL\n";
for (Node child : childs) {
str += child.codeGeneration();
}
for (int i = 0; i < Label.getGlobalVarNum(); i++) {
str += "pop\n";
}
return str + "pop\npop\nhalt\n" + Label.getFunDef();
}
@Override
public String toPrint(String prefix) {
String str = "Root\n";
prefix += " ";
for (Node child : childs) {
str += child.toPrint(prefix);
}
return str;
}
}
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