//private bool ConditionStatement(Tree.TreeNode parent)
//{
// if (currentToken.Name == "IF")
// {
// var newNode = tree.Add("<condition-statement>", parent);
// LeftCondition(newNode);
// RightCondition(newNode);
// if (currentToken.Name == ";")
// {
// newNode.AddToChildren(new Tree.TreeNode(currentToken.Name, newNode));
// }
// else
// {
// Errors.AddToken(currentToken, locationNumber,
// $"';' expected but {currentToken.Name} found", tree);
// return false;
// }
// return true;
// }
// return false;
//}
//private bool LeftCondition(Tree.TreeNode parent)
//{
// var newNode = tree.Add("<left-condition>", parent);
// newNode.AddToChildren(new Tree.TreeNode(currentToken.Name, newNode));
// currentToken = GetNext();
// IncrementLocation(currentToken);
// Constant(newNode);
// currentToken = GetNext();
// IncrementLocation(currentToken);
// if (currentToken.Name == "THEN")
// {
// newNode.AddToChildren(new Tree.TreeNode(currentToken.Name, newNode));
// currentToken = GetNext();
// IncrementLocation(currentToken);
// DeclarationList(newNode);
// }
// else
// {
// Errors.AddToken(currentToken, locationNumber,
// $"'THEN' expected but {currentToken.Name} found", tree);
// return false;
// }
// return true;
//}
//private bool RightCondition(Tree.TreeNode parent)
//{
// var newNode = tree.Add("<right-condition>", parent);
// if (currentToken.Name == ";")
// {
// newNode.AddToChildren(new Tree.TreeNode("<empty>", newNode));
// }
// else
// {
// if (currentToken.Name == "ELSE")
// {
// newNode.AddToChildren(new Tree.TreeNode(currentToken.Name, newNode));
// currentToken = GetNext();
// IncrementLocation(currentToken);
// DeclarationList(newNode);
// }
// else
// {
// Errors.AddToken(currentToken, locationNumber,
// $"'ELSE' expected but {currentToken.Name} found", tree);
// return false;
// }
// }
// return true;
//}
private bool Declaration(Tree.TreeNode parent)
{
var newNode = tree.Add("<declaration>", parent);
VariableIdentifier(newNode);
currentToken = GetNext();
IncrementLocation(currentToken);
if (currentToken.Name == ":")
{
newNode.AddToChildren(currentToken.Code + " " + currentToken.Name);
AttributeProc(newNode);
if (currentToken.Name != ";")
{
Errors.AddToken(currentToken, locationNumber,
$"';' expected but {currentToken.Name} found", tree);
return(false);
}
else
{
newNode.AddToChildren(currentToken.Code + " " + currentToken.Name);
currentToken = GetNext();
IncrementLocation(currentToken);
return(true);
}
}
else
{
Errors.AddToken(currentToken, locationNumber,
$"':' expected but {currentToken.Name} found", tree);
return(false);
}
}
private bool Block(Tree.TreeNode parent)
{
var newNode = tree.Add("<block>", parent);
Declarations(newNode);
if (currentToken.Name == "BEGIN")
{
newNode.AddToChildren(currentToken.Code + " " + currentToken.Name);
StatementsList(newNode);
if (currentToken.Name == "END")
{
newNode.AddToChildren(currentToken.Code + " " + currentToken.Name);
currentToken = GetNext();
IncrementLocation(currentToken);
return(true);
}
else
{
Errors.AddToken(currentToken, locationNumber,
$"'END' expected but {currentToken.Name} found", tree);
return(false);
}
}
else
{
Errors.AddToken(currentToken, locationNumber,
$"'BEGIN' expected but {currentToken.Name} found", tree);
return(false);
}
}
private bool ProcedureIdentifier(Tree.TreeNode parent)
{
var newNode = tree.Add("<procedure-identifier>", parent);
currentToken = GetNext();
IncrementLocation(currentToken);
return(Identifier(newNode));
}
private bool Constant(Tree.TreeNode parent)
{
var newNode = tree.Add("<constant>", parent);
if (_constantsTable.Tokens.ContainsKey(currentToken.Name))
{
newNode.AddToChildren(currentToken.Code + " " + currentToken.Name);
return(true);
}
return(false);
}
private bool Identifier(Tree.TreeNode parent)
{
var newNode = tree.Add("<identifier>", parent);
if (_identifiersTable.Tokens.ContainsKey(currentToken.Name))
{
newNode.AddToChildren(currentToken.Code + " " + currentToken.Name);
return(true);
}
return(false);
}
private bool ConstantDeclarations(Tree.TreeNode parent)
{
var newNode = tree.Add("<constant-declarations>", parent);
currentToken = GetNext();
IncrementLocation(currentToken);
if (currentToken.Name == "CONST")
{
newNode.AddToChildren(currentToken.Code + " " + currentToken.Name);
return(ConstantDeclarationsList(newNode));
}
newNode.AddToChildren(new Tree.TreeNode("<empty>", newNode));
return(true);
}
private bool StatementsList(Tree.TreeNode parent)
{
var newNode = tree.Add("<statements-list>", parent);
currentToken = GetNext();
IncrementLocation(currentToken);
//if (!ConditionStatement(newNode))
//{
newNode.AddToChildren(new Tree.TreeNode("<empty>", newNode));
//}
//currentToken = GetNext();
//IncrementLocation(currentToken);
return(true);
}
private bool AttributeProc(Tree.TreeNode parent)
{
var newNode = tree.Add("<attribute>", parent);
currentToken = GetNext();
IncrementLocation(currentToken);
if ((currentToken.Name != "INTEGER") && (currentToken.Name != "FLOAT"))
{
Errors.AddToken(currentToken, locationNumber,
$"'INTEGER' or 'FLOAT' expected but {currentToken.Name} found", tree);
return(false);
}
newNode.AddToChildren(currentToken.Code + " " + currentToken.Name);
currentToken = GetNext();
IncrementLocation(currentToken);
return(true);
}
private bool DeclarationList(Tree.TreeNode parent)
{
var newNode = tree.Add("<declaration-list>", parent);
if ((currentToken.Name == ")") || (currentToken.Name == ";") || (currentToken.Name == "ELSE"))
{
newNode.AddToChildren(new Tree.TreeNode("<empty>", newNode));
return(true);
}
while ((currentToken.Name != ")") && (currentToken.Name != ";") && (currentToken.Name != "ELSE"))
{
Declaration(newNode);
}
return(true);
}
private bool ConstantDeclarationsList(Tree.TreeNode parent)
{
var newNode = tree.Add("<constant-declarations-list>", parent);
currentToken = GetNext();
IncrementLocation(currentToken);
if (!ConstantDeclaration(newNode))
{
currentToken = GetNext();
IncrementLocation(currentToken);
newNode.AddToChildren(new Tree.TreeNode("<empty>", newNode));
return(true);
}
while (currentToken.Name != "BEGIN")
{
ConstantDeclaration(newNode);
}
return(true);
}
private bool ConstantDeclaration(Tree.TreeNode parent)
{
var newNode = tree.Add("<constant-declaration>", parent);
ConstantIdentifier(newNode);
currentToken = GetNext();
IncrementLocation(currentToken);
if (currentToken.Name == "=")
{
newNode.AddToChildren(currentToken.Code + " " + currentToken.Name);
currentToken = GetNext();
IncrementLocation(currentToken);
Constant(newNode);
currentToken = GetNext();
IncrementLocation(currentToken);
if (currentToken.Name == ";")
{
newNode.AddToChildren(currentToken.Code + " " + currentToken.Name);
currentToken = GetNext();
IncrementLocation(currentToken);
return(true);
}
else
{
Errors.AddToken(currentToken, locationNumber,
$"';' expected but {currentToken.Name} found", tree);
return(false);
}
}
else
{
Errors.AddToken(currentToken, locationNumber,
$"'=' expected but {currentToken.Name} found", tree);
return(false);
}
}
private bool ParametersList(Tree.TreeNode parent)
{
var newNode = tree.Add("<parameters-list>", parent);
currentToken = GetNext();
IncrementLocation(currentToken);
if (currentToken.Name == ";")
{
newNode.AddToChildren(new Tree.TreeNode("<empty>", newNode));
return(true);
}
if (currentToken.Name == "(")
{
newNode.AddToChildren(currentToken.Code + " " + currentToken.Name);
currentToken = GetNext();
IncrementLocation(currentToken);
DeclarationList(newNode);
if (currentToken.Name != ")")
{
Errors.AddToken(currentToken, locationNumber,
$"')' expected but {currentToken.Name} found", tree);
return(false);
}
newNode.AddToChildren(currentToken.Code + " " + currentToken.Name);
currentToken = GetNext();
IncrementLocation(currentToken);
return(true);
}
else
{
Errors.AddToken(currentToken, locationNumber,
$"'(' expected but {currentToken.Name} found", tree);
return(false);
}
}
private bool VariableIdentifier(Tree.TreeNode parent)
{
var newNode = tree.Add("<variable-identifier>", parent);
return(Identifier(newNode));
}
private bool ConstantIdentifier(Tree.TreeNode parent)
{
var newNode = tree.Add("<constant-identifier>", parent);
return(Identifier(newNode));
}
private bool Declarations(Tree.TreeNode parent)
{
var newNode = tree.Add("<declarations>", parent);
return(ConstantDeclarations(newNode));
}
