/// <summary>
/// Initializes a new instance of the <see cref="ParameterNode" /> class.
/// </summary>
/// <param name="parameterName">Name of the parameter.</param>
/// <param name="parametersRegistry">The parameters registry.</param>
/// <exception cref="ArgumentNullException">parameterName.</exception>
internal ParameterNode(string parameterName, IParameterRegistry parametersRegistry)
{
Name = Requires.NotNullOrWhiteSpace(parameterName);
this.parametersRegistry = Requires.NotNull(parametersRegistry);
_ = this.parametersRegistry.AdvertiseParameter(parameterName);
}
/// <summary>
/// Replaces functions calls with expression placeholders.
/// </summary>
/// <param name="openParenthesis">The symbol of an open parenthesis.</param>
/// <param name="closeParenthesis">The symbol of a closed parenthesis.</param>
/// <param name="parameterSeparator">The symbol of a parameter separator.</param>
/// <param name="constantsTable">The constants table.</param>
/// <param name="reverseConstantsTable">The reverse-lookup constants table.</param>
/// <param name="symbolTable">The symbols table.</param>
/// <param name="reverseSymbolTable">The reverse-lookup symbols table.</param>
/// <param name="interpreters">The constant interpreters.</param>
/// <param name="parametersTable">The parameters table.</param>
/// <param name="expression">The expression before processing.</param>
/// <param name="allSymbols">All symbols.</param>
internal static void ReplaceFunctions(
string openParenthesis,
string closeParenthesis,
string parameterSeparator,
Dictionary <string, ConstantNodeBase> constantsTable,
Dictionary <string, string> reverseConstantsTable,
Dictionary <string, ExpressionSymbol> symbolTable,
Dictionary <string, string> reverseSymbolTable,
LevelDictionary <Type, IConstantInterpreter> interpreters,
IParameterRegistry parametersTable,
string expression,
string[] allSymbols)
{
// Replace the main expression
ReplaceOneFunction(
string.Empty,
openParenthesis,
closeParenthesis,
parameterSeparator,
constantsTable,
reverseConstantsTable,
symbolTable,
reverseSymbolTable,
interpreters,
parametersTable,
expression,
allSymbols);
for (var i = 1; i < symbolTable.Count; i++)
{
// Replace sub-expressions
ReplaceOneFunction(
$"item{i.ToString(CultureInfo.InvariantCulture).PadLeft(4, '0')}",
openParenthesis,
closeParenthesis,
parameterSeparator,
constantsTable,
reverseConstantsTable,
symbolTable,
reverseSymbolTable,
interpreters,
parametersTable,
expression,
allSymbols);
}
static void ReplaceOneFunction(
string key,
string outerOpenParenthesisSymbol,
string outerCloseParenthesisSymbol,
string outerParameterSeparatorSymbol,
Dictionary <string, ConstantNodeBase> outerConstantsTableReference,
Dictionary <string, string> outerReverseConstantsTableReference,
Dictionary <string, ExpressionSymbol> outerSymbolTableReference,
Dictionary <string, string> outerReverseSymbolTableReference,
LevelDictionary <Type, IConstantInterpreter> interpreters,
IParameterRegistry outerParametersTableReference,
string outerExpressionSymbol,
string[] outerAllSymbolsSymbols)
{
ExpressionSymbol symbol = outerSymbolTableReference[key];
if (symbol.IsFunctionCall)
{
return;
}
var replaced = symbol.Expression;
while (replaced != null)
{
outerSymbolTableReference[key].Expression = replaced;
replaced = ReplaceFunctionsLocal(
replaced,
outerOpenParenthesisSymbol,
outerCloseParenthesisSymbol,
outerParameterSeparatorSymbol,
outerConstantsTableReference,
outerReverseConstantsTableReference,
outerSymbolTableReference,
outerReverseSymbolTableReference,
interpreters,
outerParametersTableReference,
outerExpressionSymbol,
outerAllSymbolsSymbols);
}
/// <summary>
/// Populates tables according to the currently-processed expression.
/// </summary>
/// <param name="processedExpression">The expression that is being processed.</param>
/// <param name="constantsTable">The constants table.</param>
/// <param name="reverseConstantsTable">The reverse-lookup constants table.</param>
/// <param name="symbolTable">The symbols table.</param>
/// <param name="reverseSymbolTable">The reverse-lookup symbols table.</param>
/// <param name="parameterRegistry">The parameters registry.</param>
/// <param name="interpreters">The constant interpreters.</param>
/// <param name="originalExpression">The expression before processing.</param>
/// <param name="openParenthesis">The symbol of an open parenthesis.</param>
/// <param name="allSymbols">All symbols on which to split, in order.</param>
internal static void PopulateTables(
string processedExpression,
Dictionary <string, ConstantNodeBase> constantsTable,
Dictionary <string, string> reverseConstantsTable,
Dictionary <string, ExpressionSymbol> symbolTable,
Dictionary <string, string> reverseSymbolTable,
IParameterRegistry parameterRegistry,
LevelDictionary <Type, IConstantInterpreter> interpreters,
string originalExpression,
string openParenthesis,
string[] allSymbols)
{
// Split expression by all symbols
string[] expressions = processedExpression.Split(
allSymbols,
StringSplitOptions.RemoveEmptyEntries);
foreach (var exp in expressions)
{
if (constantsTable.ContainsKey(exp))
{
// We have a constant
continue;
}
if (reverseConstantsTable.ContainsKey(exp))
{
// We have a constant that has bee evaluated before
continue;
}
if (parameterRegistry.Exists(exp))
{
// We have a parameter
continue;
}
if (symbolTable.ContainsKey(exp))
{
// We have an already-existing symbol
continue;
}
if (reverseSymbolTable.ContainsKey(exp))
{
// We have a symbol value that has been evaluated before
continue;
}
if (exp.Contains(openParenthesis))
{
// We have a part of a function
continue;
}
// Let's check whether it is a constant
if (ConstantsGenerator.CheckAndAdd(
constantsTable,
reverseConstantsTable,
interpreters,
originalExpression,
exp) != null)
{
continue;
}
// It's not a constant, nor something ever encountered before
// Therefore it should be a parameter
_ = parameterRegistry.AdvertiseParameter(exp);
}
}
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));
}
}
