// Parse the declaration and returns index of parts after declaration
public int Parse(string[] parts, int start)
{
// If doesn't start with keyword
if (parts[start] != "desig")
{
throw new Exception("Desig starts with '" + parts[start] + "' not 'desig'!");
}
// If the name is already taken
else if (Reserved.Exists(parts[start + 1], true))
{
throw new Exception("Name " + parts[start + 1] + " already exists!");
}
// Declaration doesn't end with ;
else if (parts[start + 3] != ";")
{
throw new Exception("Desig declaration doesn't end in ';'!");
}
else
{
// Save desig name
desigName = parts[start + 1];
criteria = parts[start + 2];
Reserved.dEx.Add(this);
// Return index after desig
return(start + 4);
}
}
// Parse the declaration and returns index of parts after declaration
public int Parse(string[] parts, int start)
{
// If doesn't start with keyword
if (parts[start] != "var")
{
throw new Exception("Var starts with '" + parts[start] + "' not 'var'!");
}
// If the name is already taken
else if (Reserved.Exists(parts[start + 1], true))
{
throw new Exception("Name " + parts[start + 1] + " already exists!");
}
// Declaration doesn't end with ;
else if (parts[start + 2] != ";")
{
throw new Exception("Var declaration doesn't end in ';'!");
}
else
{
// Save var name
varName = parts[start + 1];
Reserved.vEx.Add(this);
// Return index after var
return(start + 3);
}
}
// Parse into function
public int Parse(string[] parts, int start)
{
// Set compilation time context
string currContext = context;
// If doesn't start with keyword func
if (parts[start] != "func")
{
throw new Exception("Func starts with '" + parts[start] + "' not 'func'!");
}
// If the name is already taken
else if (Reserved.Exists(parts[start + 1], true))
{
throw new Exception("Name " + parts[start + 1] + " already exists!");
}
else if (parts[start + 2] != "{")
{
throw new Exception("Expected { not " + parts[start + 2]);
}
else
{
// Save function name
funcName = parts[start + 1];
Reserved.fEx.Add(this);
// Skip to first expression
start += 3;
// Keep identifying expression until end of function declaration
while (start < parts.Length)
{
if (parts[start] == "}")
{
return(start + 1);
}
// Identify from function context
IntoAST.IdentifyResponse ir = IntoAST.Identify("function", currContext, parts, start);
// Move to next statement and add function child to todo
start = ir.next;
if (ir.IChild is IChildFunctionDeclaration icfd)
{
todo.Add(icfd);
}
else
{
throw new Exception("Function child '" + ir.IChild + "' cannot follow function '" + funcName + "'");
}
}
// Didn't find end of function
throw new Exception("No } found for function " + funcName);
}
}