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package ast.nodes;
import ast.types.*;
import java.util.ArrayList;
import semanticanalysis.SemanticError;
import semanticanalysis.SymbolTable;
/**
* Node for the `comp_for` statement of the grammar. 'for' exprlist 'in' expr
* comp_iter?
*/
public class CompForNode implements Node {
protected ExprListNode exprlist;
protected ExprNode single_expr;
protected CompIterNode comp_iter;
public CompForNode(Node exprlist, Node single_expr, Node comp_iter) {
this.exprlist = (ExprListNode) exprlist;
this.single_expr = (ExprNode) single_expr;
this.comp_iter = (CompIterNode) comp_iter;
}
@Override
public ArrayList<SemanticError> checkSemantics(SymbolTable ST, int _nesting, FunctionType ft) {
ArrayList<SemanticError> errors = new ArrayList<>();
errors.addAll(exprlist.checkSemantics(ST, _nesting, ft));
errors.addAll(single_expr.checkSemantics(ST, _nesting, ft));
if (comp_iter != null) {
errors.addAll(comp_iter.checkSemantics(ST, _nesting, ft));
}
return errors;
}
@Override
public Type typeCheck() {
return new VoidType();
}
/**
* We do not want to provide the code generation for the for list comprehension.
*/
@Override
public String codeGeneration() {
return "";
}
@Override
public String toPrint(String prefix) {
String str = prefix + "CompForNode\n";
prefix += " ";
str += exprlist.toPrint(prefix);
str += single_expr.toPrint(prefix);
str += comp_iter.toPrint(prefix);
return str;
}
}
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