/// <summary>
/// Initializes this template rule instance
/// </summary>
/// <param name="tRule">The parent template rule</param>
/// <param name="parameters">The values for the template rule parameters</param>
/// <param name="grammar">The parent grammar</param>
public TemplateRuleInstance(TemplateRule tRule, List <Symbol> parameters, Grammar grammar)
{
// Build the head variable name
StringBuilder builder = new StringBuilder();
builder.Append(tRule.HeadName);
builder.Append("<");
for (int i = 0; i != parameters.Count; i++)
{
if (i != 0)
{
builder.Append(", ");
}
builder.Append(parameters[i].Name);
}
builder.Append(">");
string name = builder.ToString();
// Create and add the variable to the grammar
variable = grammar.AddVariable(name);
// Copy parameters
this.parameters = new List <Symbol>(parameters);
// Set parent template rule
templateRule = tRule;
}
/// <summary>
/// Adds the template rule to this grammar
/// </summary>
/// <param name="node">The rule's definition AST</param>
/// <returns>The new template rule</returns>
public TemplateRule AddTemplateRule(ASTNode node)
{
TemplateRule rule = new TemplateRule(this, node);
templateRules.Add(rule);
return(rule);
}
/// <summary>
/// Initializes this template rule as copy of another root
/// </summary>
/// <param name="copied">The copied template rule</param>
/// <param name="grammar">The parent grammar</param>
public TemplateRule(TemplateRule copied, Grammar grammar)
{
instances = new List <TemplateRuleInstance>();
this.grammar = grammar;
head = copied.head;
parameters = new List <string>(copied.parameters);
root = copied.root;
foreach (TemplateRuleInstance instance in copied.instances)
{
List <Symbol> param = new List <Symbol>();
foreach (Symbol symbol in instance.Parameters)
{
param.Add(grammar.GetSymbol(symbol.Name));
}
instances.Add(new TemplateRuleInstance(this, param, grammar));
}
}
/// <summary>
/// Adds a template rule to this context
/// </summary>
/// <param name="templateRule">A template rule</param>
public void AddTemplateRule(TemplateRule templateRule)
{
templateRules.Add(templateRule);
}