public bool AddValue_Default(ExecContext context, string valueName) { if (_names.ContainsKey(valueName)) { return(false); } _names.Add(valueName, true); _classDef.AddMember(valueName, enumType, null, true); EnumValue ev = new EnumValue(); ev.name = valueName; _values.Add(ev); return(true); }
public PebbleEnum(ExecContext context, string _enumName, ITypeDef valueTypeIn) { enumName = _enumName; valueType = valueTypeIn; // Apparently need to register non-const first. ITypeDef nonConstEnumType = TypeFactory.GetTypeDef_Enum(_enumName, false); enumType = (TypeDef_Enum)TypeFactory.GetConstVersion(nonConstEnumType); _classDef = new ClassDef_Enum(this, _enumName, enumType); context.RegisterClass(_classDef); _classDef.childAllocator = () => { return(new ClassValue_Enum()); }; _classDef.Initialize(); //don't think this is needed _classDef.AddMemberLiteral("enumName", IntrinsicTypeDefs.CONST_STRING, _enumName, false); _classDef.AddMember("name", IntrinsicTypeDefs.CONST_STRING); _classDef.AddMember("value", valueType.Clone(true), null, false, true); { FunctionValue_Host.EvaluateDelegate eval = (_context, args, thisScope) => { ClassValue cv = thisScope as ClassValue; return(enumName + "::" + cv.Get(mrName).value); }; FunctionValue newValue = new FunctionValue_Host(IntrinsicTypeDefs.STRING, new ArgList { }, eval, false, _classDef.typeDef); _classDef.AddMemberLiteral("ThisToString", newValue.valType, newValue, false); } _classDef.FinalizeClass(context); if (mrName.isInvalid) { mrName = _classDef.GetMemberRef(null, "name", ClassDef.SEARCH.NORMAL); mrValue = _classDef.GetMemberRef(null, "value", ClassDef.SEARCH.NORMAL); } }
public static void Register(Engine engine) { //@ class RegexGroup // Stores information about a Regex group match. Basically a wrapper for System.Text.RegularExpressions.Group. { TypeDef_Class ourType = TypeFactory.GetTypeDef_Class("RegexGroup", null, false); ClassDef classDef = engine.defaultContext.CreateClass("RegexGroup", ourType, null, null); classDef.Initialize(); //@ const num index; // The index of the character at the start of this match. classDef.AddMember("index", IntrinsicTypeDefs.CONST_NUMBER); //@ const num length; // The length of the substring of this match. classDef.AddMember("length", IntrinsicTypeDefs.CONST_NUMBER); //@ const string value; // The substring of this match. classDef.AddMember("value", IntrinsicTypeDefs.CONST_STRING); classDef.FinalizeClass(engine.defaultContext); regexGroupClassDef = classDef; } // Make sure the List<RegexGroup> type is registered. listRegexGroupClassDef = engine.defaultContext.RegisterIfUnregisteredList(regexGroupClassDef.typeDef); //@ class RegexMatch // Stores information about a single Regex substring match. Basically a wrapper for System.Text.RegularExpressions.Match. { TypeDef_Class ourType = TypeFactory.GetTypeDef_Class("RegexMatch", null, false); ClassDef classDef = engine.defaultContext.CreateClass("RegexMatch", ourType, null, null); classDef.Initialize(); //@ const num index; // The index of the character at the start of this match. classDef.AddMember("index", IntrinsicTypeDefs.CONST_NUMBER); //@ const num length; // The length of the substring of this match. classDef.AddMember("length", IntrinsicTypeDefs.CONST_NUMBER); //@ const string value; // The substring of this match. classDef.AddMember("value", IntrinsicTypeDefs.CONST_STRING); //@ List<RegexGroup> groups; // The regex groups of this match. If there are no groups this will be null. classDef.AddMember("groups", listRegexGroupClassDef.typeDef); classDef.FinalizeClass(engine.defaultContext); regexMatchClassDef = classDef; } // **************************************************************** // Make sure the List<string> type is registered. ClassDef listStringClassDef = engine.defaultContext.RegisterIfUnregisteredList(IntrinsicTypeDefs.STRING); // Make sure List<RegexMatch> is registered. listMatchClassDef = engine.defaultContext.RegisterIfUnregisteredList(regexMatchClassDef.typeDef); // **************************************************************** //@ class Regex // Provides static functions that implement regular expression matching for strings. Basically a wrapper for System.Text.RegularExpressions.Regex. { TypeDef_Class ourType = TypeFactory.GetTypeDef_Class("Regex", null, false); ClassDef classDef = engine.defaultContext.CreateClass("Regex", ourType, null, null, true, true); classDef.Initialize(); // *** //@ static bool IsMatch(string input, string expression) // Returns true if input matches the given regular expression. { FunctionValue_Host.EvaluateDelegate eval = (context, args, thisScope) => { string a = (string)args[0]; string b = (string)args[1]; return(Regex.IsMatch(a, b)); }; FunctionValue newValue = new FunctionValue_Host(IntrinsicTypeDefs.BOOL, new ArgList { IntrinsicTypeDefs.STRING, IntrinsicTypeDefs.STRING }, eval, false); classDef.AddMemberLiteral("IsMatch", newValue.valType, newValue, true); } //@ static RegexMatch Match(string input, string pattern); // Returns the first match of the given pattern in the input string, or null if no match. { FunctionValue_Host.EvaluateDelegate eval = (context, args, thisScope) => { string input = (string)args[0]; string pattern = (string)args[1]; Match match = Regex.Match(input, pattern); if (match.Success) { ClassValue matchInst = regexMatchClassDef.Allocate(context); Variable index = matchInst.GetByName("index"); Variable length = matchInst.GetByName("length"); Variable value = matchInst.GetByName("value"); index.value = Convert.ToDouble(match.Index); length.value = Convert.ToDouble(match.Length); value.value = match.Value; return(matchInst); } return(null); }; FunctionValue newValue = new FunctionValue_Host(regexMatchClassDef.typeDef, new ArgList { IntrinsicTypeDefs.STRING, IntrinsicTypeDefs.STRING }, eval, false); classDef.AddMemberLiteral("Match", newValue.valType, newValue, true); } //@ static List<RegexMatch> Matches(string input, string pattern); // Returns a list of all the matches of the given regular expression in the input string, or null if no matches found. { FunctionValue_Host.EvaluateDelegate eval = (context, args, thisScope) => { string input = (string)args[0]; string pattern = (string)args[1]; MatchCollection matchCol = Regex.Matches(input, pattern); if (0 == matchCol.Count) { return(null); } ClassValue matchListInst = listMatchClassDef.Allocate(context); PebbleList pebbleList = matchListInst as PebbleList; foreach (Match match in matchCol) { ClassValue matchInst = regexMatchClassDef.Allocate(context); Variable index = matchInst.GetByName("index"); Variable length = matchInst.GetByName("length"); Variable value = matchInst.GetByName("value"); index.value = Convert.ToDouble(match.Index); length.value = Convert.ToDouble(match.Length); value.value = match.Value; // Note: In this C# regex library, 0 is always the default group (it is the whole match). // That doesn't seem to be a regex standard, and it's entirely rendundant, so I'm only // taking the non-default groups. match.groups is 0 when there are no non-default groups. if (match.Groups.Count > 1) { ClassValue groupListInst = listRegexGroupClassDef.Allocate(context); PebbleList groupList = groupListInst as PebbleList; matchInst.GetByName("groups").value = groupListInst; for (int ii = 1; ii < match.Groups.Count; ++ii) { Group group = match.Groups[ii]; ClassValue groupInst = regexGroupClassDef.Allocate(context); groupInst.GetByName("index").value = Convert.ToDouble(group.Index); groupInst.GetByName("length").value = Convert.ToDouble(group.Length); groupInst.GetByName("value").value = group.Value; groupList.list.Add(new Variable("(made my Regex::Matches)", groupInst.classDef.typeDef, groupInst)); } } pebbleList.list.Add(new Variable("(Regex::Matches)", regexMatchClassDef.typeDef, matchInst)); } return(matchListInst); }; FunctionValue newValue = new FunctionValue_Host(listMatchClassDef.typeDef, new ArgList { IntrinsicTypeDefs.STRING, IntrinsicTypeDefs.STRING }, eval, false); classDef.AddMemberLiteral("Matches", newValue.valType, newValue, true); } //@ static string Replace(string input, string pattern, string replacement); // Replace any matches of the given pattern in the input string with the replacement string. { FunctionValue_Host.EvaluateDelegate eval = (context, args, thisScope) => { string input = (string)args[0]; string pattern = (string)args[1]; string replacement = (string)args[2]; return(Regex.Replace(input, pattern, replacement)); }; FunctionValue newValue = new FunctionValue_Host(IntrinsicTypeDefs.STRING, new ArgList { IntrinsicTypeDefs.STRING, IntrinsicTypeDefs.STRING, IntrinsicTypeDefs.STRING }, eval, false); classDef.AddMemberLiteral("Replace", newValue.valType, newValue, true); } //@ static List<string> Split(string input, string pattern); // Splits an input string into an array of substrings at the positions defined by a regular expression match. { FunctionValue_Host.EvaluateDelegate eval = (context, args, thisScope) => { string input = (string)args[0]; string pattern = (string)args[1]; string[] splitArray = Regex.Split(input, pattern); ClassValue inst = listStringClassDef.Allocate(context); inst.debugName = "(Regex::Split result)"; PebbleList list = (PebbleList)inst; foreach (string str in splitArray) { list.list.Add(new Variable(null, IntrinsicTypeDefs.STRING, str)); } return(inst); }; FunctionValue newValue = new FunctionValue_Host(IntrinsicTypeDefs.LIST_STRING, new ArgList { IntrinsicTypeDefs.STRING, IntrinsicTypeDefs.STRING }, eval, false); classDef.AddMemberLiteral("Split", newValue.valType, newValue, true); } // *** classDef.FinalizeClass(engine.defaultContext); } UnitTests.testFuncDelegates.Add("RegexLib", RunTests); }
public static void Register(Engine engine) { //***************************** // Create ScriptError enum. scriptErrorEnum = new PebbleEnum(engine.defaultContext, "ScriptError", IntrinsicTypeDefs.CONST_STRING); // Add a value for "no error" since enums can't be null. scriptErrorEnum.AddValue_Literal(engine.defaultContext, "NoError", "NoError"); // Add both Parse and Runtime errors to the list. foreach (string name in Enum.GetNames(typeof(ParseErrorType))) { scriptErrorEnum.AddValue_Literal(engine.defaultContext, name, name); } foreach (string name in Enum.GetNames(typeof(RuntimeErrorType))) { scriptErrorEnum.AddValue_Literal(engine.defaultContext, name, name); } // Finalize. scriptErrorEnum.EvaluateValues(engine.defaultContext); // Save the value for NoError for convenience. scriptErrorEnum_noErrorValue = scriptErrorEnum.GetValue("NoError"); //******************************* //@ class Result<T> // This was added just in case users might have a need for a templated class that encapsulates a value and a status code. { TypeDef_Class ourType = TypeFactory.GetTypeDef_Class("Result", new ArgList { IntrinsicTypeDefs.TEMPLATE_0 }, false); ClassDef classDef = engine.defaultContext.CreateClass("Result", ourType, null, new List <string> { "T" }); classDef.Initialize(); //@ T value; // The resultant value IF there was no error. classDef.AddMember("value", IntrinsicTypeDefs.TEMPLATE_0); //@ num status; // A numeric status code. By convention, 0 means no error and anything else means error. classDef.AddMemberLiteral("status", IntrinsicTypeDefs.NUMBER, 0.0); //@ string message; // A place to store error messages if desired. classDef.AddMember("message", IntrinsicTypeDefs.STRING); //@ bool IsSuccess() // Returns true iff status == 0. { FunctionValue_Host.EvaluateDelegate eval = (context, args, thisScope) => { ClassValue scope = thisScope as ClassValue; return((double)scope.GetByName("status").value == 0.0); }; FunctionValue_Host newValue = new FunctionValue_Host(IntrinsicTypeDefs.BOOL, new ArgList { }, eval, false, ourType); classDef.AddMemberLiteral("IsSuccess", newValue.valType, newValue); } //@ string ToString() // Returns a string representation of the Result. { FunctionValue_Host.EvaluateDelegate eval = (context, args, thisScope) => { ClassValue scope = thisScope as ClassValue; double status = (double)scope.GetByName("status").value; string result = scope.classDef.typeDef.ToString() + "["; if (0.0 == status) { result += CoreLib.ValueToString(context, scope.GetByName("value").value, true); } else { result += status + ": \"" + (string)scope.GetByName("message").value + "\""; } return(result + "]"); }; FunctionValue_Host newValue = new FunctionValue_Host(IntrinsicTypeDefs.STRING, new ArgList { }, eval, false, ourType); classDef.AddMemberLiteral("ThisToString", newValue.valType, newValue); } classDef.FinalizeClass(engine.defaultContext); resultClassDef = classDef; } //******************************* //@ class ScriptResult<T> // For returning the result of something that can error, like an Exec call. { TypeDef_Class ourType = TypeFactory.GetTypeDef_Class("ScriptResult", new ArgList { IntrinsicTypeDefs.TEMPLATE_0 }, false); ClassDef classDef = engine.defaultContext.CreateClass("ScriptResult", ourType, null, new List <string> { "T" }); classDef.Initialize(); //@ T value; // The return value if there was no error. classDef.AddMember("value", IntrinsicTypeDefs.TEMPLATE_0); //@ ScriptError error; // ScriptError.NoError if no error. classDef.AddMemberLiteral("error", CoreLib.scriptErrorEnum._classDef.typeDef, CoreLib.scriptErrorEnum_noErrorValue); //@ string message; // Optional error message. classDef.AddMember("message", IntrinsicTypeDefs.STRING); //@ bool IsSuccess() // Returns true iff error == ScriptError.NoError. { FunctionValue_Host.EvaluateDelegate eval = (context, args, thisScope) => { ClassValue scope = thisScope as ClassValue; return(scope.GetByName("error").value == CoreLib.scriptErrorEnum_noErrorValue); }; FunctionValue_Host newValue = new FunctionValue_Host(IntrinsicTypeDefs.BOOL, new ArgList { }, eval, false, ourType); classDef.AddMemberLiteral("IsSuccess", newValue.valType, newValue); } //@ string ToString() // Returns a string representation of the ScriptError. { FunctionValue_Host.EvaluateDelegate eval = (context, args, thisScope) => { ClassValue scope = thisScope as ClassValue; var error = (ClassValue_Enum)scope.GetByName("error").value; string result = scope.classDef.typeDef.ToString() + "["; if (CoreLib.scriptErrorEnum_noErrorValue == error) { result += CoreLib.ValueToString(context, scope.GetByName("value").value, true); } else { result += error.GetName() + ": \"" + (string)scope.GetByName("message").value + "\""; } return(result + "]"); }; FunctionValue_Host newValue = new FunctionValue_Host(IntrinsicTypeDefs.STRING, new ArgList { }, eval, false, ourType); classDef.AddMemberLiteral("ThisToString", newValue.valType, newValue); } classDef.FinalizeClass(engine.defaultContext); resultClassDef = classDef; } // This code makes sure that Result<bool> is a registered class and type. List <ITypeDef> genericTypes = new ArgList(); genericTypes.Add(IntrinsicTypeDefs.BOOL); scriptResultBoolTypeDef = TypeFactory.GetTypeDef_Class("ScriptResult", genericTypes, false); scriptResultBoolClassDef = engine.defaultContext.RegisterIfUnregisteredTemplate(scriptResultBoolTypeDef); Pb.Assert(null != scriptResultBoolTypeDef && null != scriptResultBoolClassDef, "Error initializing ScriptResult<bool>."); //////////////////////////////////////////////////////////////////////////// // Register non-optional libraries. //CoreResult.Register(engine); // List and Dictionary probably need to be first because other libraries sometimes use them. CoreList.Register(engine); CoreDictionary.Register(engine); MathLib.Register(engine); RegexLib.Register(engine); StringLib.Register(engine); StreamLib.Register(engine); //@ global const num FORMAX; // The highest value a for iterator can be. Attempting to exceed it generates an error. engine.defaultContext.CreateGlobal("FORMAX", IntrinsicTypeDefs.CONST_NUMBER, Expr_For.MAX); //////////////////////////////////////////////////////////////////////////// // Library functions //@ global ScriptResult<bool> Exec(string script) // Executes the supplied script. // Since this is not running "interactive" (or inline), the only way the script can // have an external effect is if it affects global things (variables, class definitions). // The returned ScriptResult's value is only true(success) or false (error). { FunctionValue_Host.EvaluateDelegate eval = (context, args, thisScope) => { string script = (string)args[0]; ClassValue scriptResultInst = scriptResultBoolClassDef.Allocate(context); Variable value = scriptResultInst.GetByName("value"); Variable error = scriptResultInst.GetByName("error"); Variable message = scriptResultInst.GetByName("message"); ScriptResult result = context.engine.RunScript(script, false, null, true); if (null != result.parseErrors) { value.value = false; error.value = scriptErrorEnum.GetValue(result.parseErrors[0].type.ToString());; message.value = result.parseErrors[0].ToString(); } else if (null != result.runtimeError) { value.value = false; error.value = result.value; message.value = result.runtimeError.ToString(); } else { value.value = true; error.value = scriptErrorEnum_noErrorValue; message.value = ""; } return(scriptResultInst); }; FunctionValue newValue = new FunctionValue_Host(scriptResultBoolTypeDef, new ArgList { IntrinsicTypeDefs.STRING }, eval, false); engine.AddBuiltInFunction(newValue, "Exec"); } //@ global ScriptResult<bool> ExecInline(string) // This executes the given script in the current scope. This is different from Exec, because Exec exists in its own scope. // The returned ScriptResult's value is only true(success) or false (error). { FunctionValue_Host.EvaluateDelegate eval = (context, args, thisScope) => { string script = (string)args[0]; ClassValue scriptResultInst = scriptResultBoolClassDef.Allocate(context); Variable value = scriptResultInst.GetByName("value"); Variable error = scriptResultInst.GetByName("error"); Variable message = scriptResultInst.GetByName("message"); ScriptResult result = context.engine.RunInteractiveScript(script, false); if (null != result.parseErrors) { value.value = false; error.value = scriptErrorEnum.GetValue(result.parseErrors[0].type.ToString());; message.value = result.parseErrors[0].ToString(); } else if (null != result.runtimeError) { value.value = false; error.value = result.value; message.value = result.runtimeError.ToString(); } else { value.value = true; error.value = scriptErrorEnum_noErrorValue; message.value = ""; } return(scriptResultInst); }; FunctionValue newValue = new FunctionValue_Host(scriptResultBoolTypeDef, new ArgList { IntrinsicTypeDefs.STRING }, eval, false); engine.AddBuiltInFunction(newValue, "ExecInline"); } //@ global string Print(...) // Converts all arguments to strings, concatenates them, then outputs the result using the Engine' Log function. // This function can be set to whatever the host program likes: see Engine.Log { FunctionValue_Host.EvaluateDelegate eval = (context, args, thisScope) => { string result = StandardPrintFunction(context, args); context.engine.Log(result); return(result); }; FunctionValue newValue = new FunctionValue_Host(IntrinsicTypeDefs.STRING, new List <ITypeDef> { IntrinsicTypeDefs.ANY }, eval, true); engine.AddBuiltInFunction(newValue, "Print"); } //@ global string ToScript(any) // Returns a script which, when run, returns a value equal to the value passed into ToScript. { FunctionValue_Host.EvaluateDelegate eval = (context, args, thisScope) => { object val0 = args[0]; return(ValueToScript(context, val0)); }; FunctionValue newValue = new FunctionValue_Host(IntrinsicTypeDefs.STRING, new ArgList { IntrinsicTypeDefs.ANY }, eval, false); engine.AddBuiltInFunction(newValue, "ToScript"); } ///////////////////////////////////////////////////////////////// // Type Conversion //@ global bool ToBool(any) // Attempts to convert input into a boolean value. // 0 and null are false. != 0 and non-null references are true. Strings are handled by Convert.ToBoolean, // which can throw an exception if it doesn't know how to convert the string. { FunctionValue_Host.EvaluateDelegate eval = (context, args, thisScope) => { object val = args[0]; if (null == val) { return(false); } else if (val is bool) { return((bool)val); } else if (val is double) { return(Convert.ToBoolean((double)val)); } else if (val is string) { try { return(Convert.ToBoolean((string)val)); // this loves to throw errors } catch (Exception e) { context.SetRuntimeError(RuntimeErrorType.ConversionInvalid, "ToBool - C# error: " + e.ToString()); return(null); } } else { return(true); } }; FunctionValue newValue = new FunctionValue_Host(IntrinsicTypeDefs.BOOL, new ArgList { IntrinsicTypeDefs.ANY }, eval, false); engine.AddBuiltInFunction(newValue, "ToBool"); } //@ global num ToNum(any) // Attempts to convert input to a num. // true -> 1, false -> 0, null -> 0, non-null object reference -> 1. Strings are handled by Convert.ToDouble, // which can throw an error if it doesn't know how to convert the string. { FunctionValue_Host.EvaluateDelegate eval = (context, args, thisScope) => { object val = args[0]; if (null == val) { return(0.0); } else if (val is double) { return((double)val); } else if (val is bool) { return((bool)val ? 1.0 : 0.0); } else if (val is string) { try { return(Convert.ToDouble((string)val)); // this loves to throw errors } catch { context.SetRuntimeError(RuntimeErrorType.ConversionInvalid, "ToNum - Cannot convert string \"" + ((string)val) + "\" to number."); return(null); } } else { return(1.0); } }; FunctionValue newValue = new FunctionValue_Host(IntrinsicTypeDefs.NUMBER, new ArgList { IntrinsicTypeDefs.ANY }, eval, false); engine.AddBuiltInFunction(newValue, "ToNum"); } //@ global string ToString(...) // Converts all arguments to strings, concatenates them, and returns the result. { FunctionValue_Host.EvaluateDelegate eval = (context, args, thisScope) => { return(StandardPrintFunction(context, args)); }; FunctionValue newValue = new FunctionValue_Host(IntrinsicTypeDefs.STRING, new ArgList { IntrinsicTypeDefs.ANY }, eval, true); engine.AddBuiltInFunction(newValue, "ToString"); } UnitTests.testFuncDelegates.Add("CoreLib", RunTests); }