static string?ReplaceFunctionsLocal(
string source,
string openParenthesisSymbol,
string closeParenthesisSymbol,
string parameterSeparatorSymbol,
Dictionary <string, ConstantNodeBase> constantsTableReference,
Dictionary <string, string> reverseConstantsTableReference,
Dictionary <string, ExpressionSymbol> symbolTableReference,
Dictionary <string, string> reverseSymbolTableReference,
LevelDictionary <Type, IConstantInterpreter> interpretersReference,
IParameterRegistry parametersTableReference,
string expressionSymbol,
string[] allSymbolsSymbols)
{
var op = -1;
var opl = openParenthesisSymbol.Length;
var cpl = closeParenthesisSymbol.Length;
while (true)
{
op = source.InvariantCultureIndexOf(
openParenthesisSymbol,
op + opl);
if (op == -1)
{
return(null);
}
if (op == 0)
{
continue;
}
var functionHeaderCheck = source.Substring(
0,
op);
if (allSymbolsSymbols.Any(
(
p,
check) => check.InvariantCultureEndsWith(p),
functionHeaderCheck))
{
continue;
}
var functionHeader = functionHeaderCheck.Split(
allSymbolsSymbols,
StringSplitOptions.None).Last();
var oop = source.InvariantCultureIndexOf(
openParenthesisSymbol,
op + opl);
var cp = source.InvariantCultureIndexOf(
closeParenthesisSymbol,
op + cpl);
while (oop < cp && oop != -1 && cp != -1)
{
oop = source.InvariantCultureIndexOf(
openParenthesisSymbol,
oop + opl);
cp = source.InvariantCultureIndexOf(
closeParenthesisSymbol,
cp + cpl);
}
if (cp == -1)
{
continue;
}
var arguments = source.Substring(
op + opl,
cp - op - opl);
var originalArguments = arguments;
var q = arguments;
while (q != null)
{
arguments = q;
q = ReplaceFunctionsLocal(
q,
openParenthesisSymbol,
closeParenthesisSymbol,
parameterSeparatorSymbol,
constantsTableReference,
reverseConstantsTableReference,
symbolTableReference,
reverseSymbolTableReference,
interpretersReference,
parametersTableReference,
expressionSymbol,
allSymbolsSymbols);
}
var argPlaceholders = new List <string>();
foreach (var s in arguments.Split(
new[] { parameterSeparatorSymbol },
StringSplitOptions.RemoveEmptyEntries))
{
TablePopulationGenerator.PopulateTables(
s,
constantsTableReference,
reverseConstantsTableReference,
symbolTableReference,
reverseSymbolTableReference,
parametersTableReference,
interpretersReference,
expressionSymbol,
openParenthesisSymbol,
allSymbolsSymbols);
// We check whether or not this is actually a constant
argPlaceholders.Add(
ConstantsGenerator.CheckAndAdd(
constantsTableReference,
reverseConstantsTableReference,
interpretersReference,
expressionSymbol,
s) ?? (!parametersTableReference.Exists(s)
? SymbolExpressionGenerator.GenerateSymbolExpression(
symbolTableReference,
reverseSymbolTableReference,
s,
false)
: s));
}
var functionCallBody =
$"{functionHeader}{openParenthesisSymbol}{string.Join(parameterSeparatorSymbol, argPlaceholders)}{closeParenthesisSymbol}";
var functionCallToReplace =
$"{functionHeader}{openParenthesisSymbol}{originalArguments}{closeParenthesisSymbol}";
var functionCallItem = SymbolExpressionGenerator.GenerateSymbolExpression(
symbolTableReference,
reverseSymbolTableReference,
functionCallBody,
true);
return(source.Replace(
functionCallToReplace,
functionCallItem));
}
}
internal static ComputationBody CreateBody(WorkingExpressionSet workingSet)
{
if (workingSet.CancellationToken.IsCancellationRequested)
{
return(ComputationBody.Empty);
}
foreach (Type extractorType in workingSet.Extractors.KeysByLevel.OrderBy(p => p.Key)
.SelectMany(p => p.Value).ToArray())
{
workingSet.Expression = workingSet.Extractors[extractorType].ExtractAllConstants(
workingSet.Expression,
workingSet.ConstantsTable,
workingSet.ReverseConstantsTable,
workingSet.Definition);
if (workingSet.CancellationToken.IsCancellationRequested)
{
return(ComputationBody.Empty);
}
}
workingSet.Expression = workingSet.Expression.Trim().Replace(
" ",
string.Empty);
// Start preparing expression
workingSet.SymbolTable.Add(
string.Empty,
ExpressionSymbol.GenerateSymbol(
string.Empty,
workingSet.Expression));
// Prepares expression and takes care of operators to ensure that they are all OK and usable
workingSet.Initialize();
workingSet.SymbolTable[string.Empty].Expression = workingSet.Expression;
if (workingSet.CancellationToken.IsCancellationRequested)
{
return(ComputationBody.Empty);
}
// Break expression based on function calls
FunctionsExtractor.ReplaceFunctions(
workingSet.Definition.Parentheses.Left,
workingSet.Definition.Parentheses.Right,
workingSet.Definition.ParameterSeparator,
workingSet.ConstantsTable,
workingSet.ReverseConstantsTable,
workingSet.SymbolTable,
workingSet.ReverseSymbolTable,
workingSet.Interpreters,
workingSet.ParameterRegistry,
workingSet.SymbolTable[string.Empty].Expression,
workingSet.AllSymbols);
if (workingSet.CancellationToken.IsCancellationRequested)
{
return(ComputationBody.Empty);
}
// We save a split expression for determining parameter order
var splitExpression = workingSet.Expression.Split(
workingSet.AllSymbols.ToArray(),
StringSplitOptions.RemoveEmptyEntries);
// Break by parentheses
ParenthesesParser.FormatParentheses(
workingSet.Definition.Parentheses.Left,
workingSet.Definition.Parentheses.Right,
workingSet.Definition.ParameterSeparator,
workingSet.AllOperatorsInOrder,
workingSet.SymbolTable,
workingSet.ReverseSymbolTable);
if (workingSet.CancellationToken.IsCancellationRequested)
{
return(ComputationBody.Empty);
}
// Populating symbol tables
foreach (var p in workingSet.SymbolTable.Where(p => !p.Value.IsFunctionCall)
.Select(p => p.Value.Expression))
{
TablePopulationGenerator.PopulateTables(
p,
workingSet.ConstantsTable,
workingSet.ReverseConstantsTable,
workingSet.SymbolTable,
workingSet.ReverseSymbolTable,
workingSet.ParameterRegistry,
workingSet.Interpreters,
workingSet.Expression,
workingSet.Definition.Parentheses.Left,
workingSet.AllSymbols);
}
// For each parameter from the table we've just populated, see where it's first used, and fill in that index as the order
foreach (ParameterContext paramForOrdering in workingSet.ParameterRegistry.Dump())
{
paramForOrdering.Order = Array.IndexOf(
splitExpression,
paramForOrdering.Name);
}
if (workingSet.CancellationToken.IsCancellationRequested)
{
return(ComputationBody.Empty);
}
// Generate expressions
NodeBase?body;
try
{
body = GenerateExpression(
workingSet.SymbolTable[string.Empty].Expression,
workingSet);
}
catch
{
body = null;
}
if (body == null || workingSet.CancellationToken.IsCancellationRequested)
{
return(ComputationBody.Empty);
}
if (body is ConstantNodeBase && workingSet.ParameterRegistry.Populated)
{
return(ComputationBody.Empty);
}
workingSet.Success = true;
return(new ComputationBody(
body,
workingSet.ParameterRegistry));
}