public void VisitDeclaration(DeclarationNode dn)
{
int temp = this.depth;
string spaces = IncreaseDepth();
this.io.WriteLine($"{spaces}Declaration: (\n{spaces} Identifier: {dn.Identifier},\n{spaces} Type: {dn.Type},\n{spaces} Token: {dn.Token}\n{spaces})");
this.depth = temp;
}
ASTNode VAR()
{
var node = new DeclarationNode();
node.lexeme = Consume("var", TokenType.KEYWORD);
node.identifier = IDENT();
Consume(":", TokenType.SEPARATOR);
node.identifierType = TYPE();
node.identifierValue = VARTAIL();
return(node);
}
public void VisitDeclaration(DeclarationNode dn)
{
string defaultValue = "";
switch (dn.Type)
{
case SymbolType.IntegerValue: defaultValue = "0"; break;
default: defaultValue = ""; break;
}
if (!this.symbolTable.AddEntry(new SymbolTableEntry(dn.Identifier, dn.Type, defaultValue)))
{
throw new DeclarationError($"Variable {dn.Identifier} has already been declared", dn.Token);
}
}