public void CreatesParsersFromLambdas()
{
var succeeds = new LambdaParser<string>(tokens => new Parsed<string>("AA", tokens.Advance().Advance()));
succeeds.PartiallyParses(new CharLexer().Tokenize("AABB")).LeavingUnparsedTokens("B", "B").WithValue("AA");
var fails = new LambdaParser<string>(tokens => new Error<string>(tokens, ErrorMessage.Unknown()));
fails.FailsToParse(new CharLexer().Tokenize("AABB")).LeavingUnparsedTokens("A", "A", "B", "B").WithMessage("(1, 1): Parse error.");
}
public void Parse_WhenOnlyMemberIsPassed_ThrowsException()
{
var parser = new LambdaParser();
var ex = Assert.Throws<SisoDbException>(
() => parser.Parse<MyClass>(i => i.Bool1));
Assert.AreEqual(ExceptionMessages.LambdaParser_NoMemberExpressions, ex.Message);
}
public void Parse_WhenByteArray_NotSupportedException()
{
var parser = new LambdaParser();
var ex = Assert.Throws<NotSupportedException>(
() => parser.Parse<MyClass>(i => i.Bytes1 == new byte[] { 1, 2 }));
Assert.AreEqual(ExceptionMessages.LambdaParser_MemberIsBytes.Inject("Bytes1"), ex.Message);
}
public void ConditionTest()
{
TryAction(() =>
{
Expression <Func <int, int, int> > srcExp = (x, y) => x > y ? x : y;
Expression <Func <int, int, int> > targetExp = LambdaParser.Parse <Func <int, int, int> >("(x, y) => x > y ? x : y");
IsTrue(srcExp, targetExp, 1, 2);
IsTrue(srcExp, targetExp, 2, 1);
});
}
public void Parse_WhenUnsupportedMethodInvocation_NotSupportedException()
{
var parser = new LambdaParser();
var ex = Assert.Throws<NotSupportedException>(
() => parser.Parse<MyClass>(i => i.String1 == Convert.ToString(i.Int1)));
Assert.AreEqual(
ExceptionMessages.LambdaParser_UnsupportedMethodCall.Inject("ToString(i.Int1)"),
ex.Message);
}
public void IndexTest()
{
TryAction(() =>
{
List <int> list = new List <int> {
1, 2, 3, 4
};
Expression <Func <List <int>, int> > srcExp = (l) => l[1] + l[2];
Expression <Func <List <int>, int> > targetExp = LambdaParser.Parse <Func <List <int>, int> >("(l) => l[1] + l[2]");
Assert.IsTrue(srcExp.Compile().Invoke(list) == targetExp.Compile().Invoke(list));
});
}
public void FuncTestNReco4()
{
var lambdaParser = new LambdaParser();
var varContext = new Dictionary <string, object>
{
["A"] = 10,
["B"] = 12
};
var result = lambdaParser.Eval("A * (B + 10)", varContext);
Console.WriteLine(result);
}
public bool LambdaParser(Parameter parameter)
{
StringBuilder statementBuilder = new StringBuilder()
.AppendLine("new [] {")
.AppendJoin("," + Environment.NewLine, parameter.Statements)
.AppendLine("}");
LambdaParser lambdaParser = new LambdaParser();
object[] results = (object[])lambdaParser.Eval(statementBuilder.ToString(), _ => null);
return(Assert(results.Select(Convert.ToInt32), parameter.Sum));
}
public void CustomObjTest()
{
TryAction(() =>
{
Expression <Func <TestObj, long> > srcExp = (t) => t.Count + 8L;
Expression <Func <TestObj, long> > targetExp = LambdaParser.Parse <Func <TestObj, long> >("(t) => t.Count + 8L");
var test = new TestObj {
Count = 15
};
Assert.IsTrue(srcExp.Compile().Invoke(test) == targetExp.Compile().Invoke(test));
});
}
public void CompareTest()
{
TryAction(() =>
{
Expression <Func <TestObj, bool> > srcExp = (t) => !(t.Count > 5) || (t.Count < 100 && t.Count > 10);
Expression <Func <TestObj, bool> > targetExp = LambdaParser.Parse <Func <TestObj, bool> >("(t) => !(t.Count > 5) || (t.Count < 100 && t.Count > 10)");
var test = new TestObj {
Count = 15
};
Assert.IsTrue(srcExp.Compile().Invoke(test) == targetExp.Compile().Invoke(test));
});
}
public void GenericTest()
{
TryAction(() =>
{
Expression <Func <TestObj, string> > srcExp = (t) => t.Func <int, string>(4);
Expression <Func <TestObj, string> > targetExp = LambdaParser.Parse <Func <TestObj, string> >("(t) => t.Func<int, string>(4)");
var test = new TestObj {
Count = 15
};
Assert.IsTrue(srcExp.Compile().Invoke(test) == targetExp.Compile().Invoke(test));
});
}
private void ExecuteLuaRule(RuleInfo rule, IIotEntity entity)
{
var lParser = new LambdaParser();
var context = new Dictionary <string, object> {
{ "entity", entity }, { "rule", rule }
};
var bResult = (bool)lParser.Eval((string)rule.RuleCondition, context);
if (bResult)
{
_logger.LogInformation($"Executing rule {rule.RuleName}");
rule.Action.Invoke(entity);
}
}
public void MergesPotentialErrorMessagesWhenParserSucceedsWithoutConsumingInput()
{
//Choice really shouldn't be used with parsers that can succeed without
//consuming input. These tests simply describe the behavior under that
//unusual situation.
Parser<Token> succeedWithoutConsuming = new LambdaParser<Token>(tokens => new Parsed<Token>(null, tokens));
var reply = Choice(A, succeedWithoutConsuming).Parses(Tokenize(""));
reply.ErrorMessages.ToString().ShouldEqual("A expected");
reply = Choice(A, B, succeedWithoutConsuming).Parses(Tokenize(""));
reply.ErrorMessages.ToString().ShouldEqual("A or B expected");
reply = Choice(A, succeedWithoutConsuming, B).Parses(Tokenize(""));
reply.ErrorMessages.ToString().ShouldEqual("A expected");
}
public void NullComparison()
{
var varContext = getContext();
var lambdaParser = new LambdaParser();
Assert.True((bool)lambdaParser.Eval("null == nullVar", varContext));
Assert.True((bool)lambdaParser.Eval("5>nullVar", varContext));
Assert.True((bool)lambdaParser.Eval("testObj!=null", varContext));
Assert.Equal(0, LambdaParser.GetExpressionParameters(lambdaParser.Parse("20 == null")).Length);
lambdaParser = new LambdaParser(new ValueComparer()
{
NullComparison = ValueComparer.NullComparisonMode.Sql
});
Assert.False((bool)lambdaParser.Eval("null == nullVar", varContext));
Assert.False((bool)lambdaParser.Eval("nullVar<5", varContext));
Assert.False((bool)lambdaParser.Eval("nullVar>5", varContext));
}
public void MergesPotentialErrorMessagesWhenParserSucceedsWithoutConsumingInput()
{
//Choice really shouldn't be used with parsers that can succeed without
//consuming input. These tests simply describe the behavior under that
//unusual situation.
IParser <string> succeedWithoutConsuming = new LambdaParser <string>(tokens => new Success <string>(null, tokens));
var reply = Choice(A, succeedWithoutConsuming).Parses(Tokenize(""));
reply.FailureMessages.ToString().ShouldBe("A expected");
reply = Choice(A, B, succeedWithoutConsuming).Parses(Tokenize(""));
reply.FailureMessages.ToString().ShouldBe("A or B expected");
reply = Choice(A, succeedWithoutConsuming, B).Parses(Tokenize(""));
reply.FailureMessages.ToString().ShouldBe("A expected");
}
public override Verb CreateVerb(string[] tokens)
{
var lengthLessBracket = length - 1;
Color(position, lengthLessBracket, IDEColor.EntityType.Operators);
var parser = new LambdaParser();
if (parser.Scan(source, position + lengthLessBracket))
{
Conditional = new Conditional((Lambda)parser.Result.Value);
overridePosition = parser.Result.Position;
}
else
{
Conditional = new Unconditional();
}
return(new NullOp());
}
public void EvalCachePerf()
{
var lambdaParser = new LambdaParser();
var varContext = new Dictionary <string, object>();
varContext["a"] = 55;
varContext["b"] = 2;
var sw = new Stopwatch();
sw.Start();
for (int i = 0; i < 10000; i++)
{
Assert.AreEqual(105, lambdaParser.Eval("(a*2 + 100)/b", varContext));
}
sw.Stop();
Console.WriteLine("10000 iterations: {0}", sw.Elapsed);
}
public override void TraverseChildren(IMethodCall methodCall)
{
var mutableMethodCall = methodCall as MethodCall;
var callsToOverloads = reflector.From(typeof(Replace)).GetAllOverloadsOf("CallsTo");
if (mutableMethodCall.MethodCallMatchesAnOverload(callsToOverloads))
{
var lambda = mutableMethodCall.Arguments[0] as AnonymousDelegate;
var parser = new LambdaParser(lambda, host, log, registry);
var replacement = parser.GetReplacementFactory();
var registrar = replacement.GetRegistrar();
registrar.RegisterReplacement();
}
base.TraverseChildren(methodCall);
}
public void EvalCachePerfNReco()
{
decimal result = decimal.MinValue;
var sw = new Stopwatch();
sw.Start();
for (var i = 0; i < 10000; i++)
{
var varContext = new Dictionary <string, object>
{
["a"] = 55,
["b"] = 2
};
var lambdaParser = new LambdaParser();
result = (decimal)lambdaParser.Eval("(a*2 + 100)/b", varContext);
}
sw.Stop();
Console.WriteLine("10000 iterations: {0}", sw.Elapsed);
Assert.AreEqual(105M, result);
}
public void ApplyingARuleOneOrMoreTimes()
{
var parser = OneOrMore(AB);
parser.FailsToParse(Tokenize("")).AtEndOfInput().WithMessage("(1, 1): A expected");
parser.PartiallyParses(Tokenize("AB!"))
.LeavingUnparsedTokens("!")
.WithValue(Literals("AB"));
parser.PartiallyParses(Tokenize("ABAB!"))
.LeavingUnparsedTokens("!")
.WithValue(Literals("AB", "AB"));
parser.FailsToParse(Tokenize("ABABA!"))
.LeavingUnparsedTokens("!")
.WithMessage("(1, 6): B expected");
Parser <Token> succeedWithoutConsuming = new LambdaParser <Token>(tokens => new Parsed <Token>(null, tokens));
Action infiniteLoop = () => OneOrMore(succeedWithoutConsuming).Parse(new TokenStream(Tokenize("")));
infiniteLoop.ShouldThrow <Exception>("Parser encountered a potential infinite loop at position (1, 1).");
}
public void ApplyingARuleOneOrMoreTimes()
{
var parser = OneOrMore(AB);
parser.FailsToParse(Tokenize("")).AtEndOfInput().WithMessage("(1, 1): <BIND2 <'A'> TO System.String TO System.String> occurring 1+ times expected");
parser.PartiallyParses(Tokenize("AB!"))
.LeavingUnparsedTokens("!")
.WithValues("AB");
parser.PartiallyParses(Tokenize("ABAB!"))
.LeavingUnparsedTokens("!")
.WithValues("AB", "AB");
parser.FailsToParse(Tokenize("ABABA!"))
.LeavingUnparsedTokens("!")
.WithMessage("(1, 6): B expected");
IParser <Token> succeedWithoutConsuming = new LambdaParser <Token>(tokens => new Success <Token>(null, tokens));
Action infiniteLoop = () => OneOrMore(succeedWithoutConsuming).Parse(new TokenStream(Tokenize("")));
infiniteLoop.ShouldThrow <Exception>("Item parser <(t) Lexepars.Token> encountered a potential infinite loop at position (1, 1).");
}
public void ApplyingARuleZeroOrMoreTimes()
{
var parser = ZeroOrMore(AB);
parser.Parses(Tokenize("")).ParsedValue.ShouldBeEmpty();
parser.PartiallyParses(Tokenize("AB!"))
.LeavingUnparsedTokens("!")
.WithValues("AB");
parser.PartiallyParses(Tokenize("ABAB!"))
.LeavingUnparsedTokens("!")
.WithValues("AB", "AB");
parser.FailsToParse(Tokenize("ABABA!"))
.LeavingUnparsedTokens("!")
.WithMessage("(1, 6): B expected");
var succeedWithoutConsuming = new LambdaParser <string>(t => new Success <string>(null, t));
Action infiniteLoop = () => ZeroOrMore(succeedWithoutConsuming).Parse(new TokenStream(Tokenize("")));
infiniteLoop.ShouldThrow <Exception>("Item parser <(t) System.String> encountered a potential infinite loop at position (1, 1).");
}
/// <summary>
/// 分页查询 + 条件查询 + 排序
/// </summary>
/// <param name="pager">分页对象</param>
/// <param name="condition">过滤条件</param>
/// <returns></returns>
public PagerEntity <DictionaryDetailEntity> QueryDictionaryDetailByPagers(PagerInfo pager, List <SearchCondition> condition = null)
{
var entity = CurrentDbSet.Where(it => true);
//动态增加过滤条件
if (condition != null && condition.Count > 0)
{
var parser = new LambdaParser <DictionaryDetailEntity>();
entity = entity.Where(parser.ParserConditions(condition));
}
var total = entity.Count();
entity = pager.Sort == "ASC" ? entity.OrderBy(pager.SortFiled) : entity.OrderByDescending(pager.SortFiled);
entity = entity.Skip(pager.PageSize * (pager.PageIndex - 1))
.Take(pager.PageSize);
return(new PagerEntity <DictionaryDetailEntity>
{
Entity = entity.ToList(),
Total = total
});
}
public void Eval()
{
var lambdaParser = new LambdaParser();
var varContext = getContext();
Assert.Equal("st", lambdaParser.Eval("test.Substring(2)", varContext));
Assert.Equal(true, lambdaParser.Eval("NOT(NOT(1==1))", varContext));
Assert.Equal(3M, lambdaParser.Eval("1+2", varContext));
Assert.Equal(6M, lambdaParser.Eval("1+2+3", varContext));
Assert.Equal("b{0}_", lambdaParser.Eval("\"b{0}_\"", varContext));
Assert.Equal(3M, lambdaParser.Eval("(1+(3-1)*4)/3", varContext));
Assert.Equal(1M, lambdaParser.Eval("one*5*one-(-1+5*5%10)", varContext));
Assert.Equal("ab", lambdaParser.Eval("\"a\"+\"b\"", varContext));
Assert.Equal(4.14M, lambdaParser.Eval("pi + 1", varContext));
Assert.Equal(5.14M, lambdaParser.Eval("2 +pi", varContext));
Assert.Equal(2.14M, lambdaParser.Eval("pi + -one", varContext));
Assert.Equal("test1", lambdaParser.Eval("test + \"1\"", varContext));
Assert.Equal("a_b_a_b", lambdaParser.Eval(" name_with_underscore + _name_with_underscore ", varContext));
Assert.Equal(1M, lambdaParser.Eval("true or false ? 1 : 0", varContext));
Assert.Equal(true, lambdaParser.Eval("5<=3 ? false : true", varContext));
Assert.Equal(5M, lambdaParser.Eval("pi>one && 0<one ? (1+8)/3+1*two : 0", varContext));
Assert.Equal(4M, lambdaParser.Eval("pi>0 ? one+two+one : 0", varContext));
Assert.Equal(DateTime.Now.Year, lambdaParser.Eval("now.Year", varContext));
Assert.Equal(true, lambdaParser.Eval(" (1+testObj.IntProp)==2 ? testObj.FldTrue : false ", varContext));
Assert.Equal("ab2_3", lambdaParser.Eval(" \"a\"+testObj.Format(\"b{0}_{1}\", 2, \"3\".ToString() ).ToString() ", varContext));
Assert.Equal(true, lambdaParser.Eval(" testObj.Hash[\"a\"] == \"1\"", varContext));
Assert.Equal(true, lambdaParser.Eval(" (testObj.Hash[\"a\"]-1)==testObj.Hash[\"b\"].Length ", varContext));
Assert.Equal(4.0M, lambdaParser.Eval(" arr1[0]+arr1[1] ", varContext));
Assert.Equal(2M, lambdaParser.Eval(" (new[]{1,2})[1] ", varContext));
Assert.Equal(true, lambdaParser.Eval(" new[]{ one } == new[] { 1 } ", varContext));
Assert.Equal(3, lambdaParser.Eval(" new dictionary{ {\"a\", 1}, {\"b\", 2}, {\"c\", 3} }.Count ", varContext));
Assert.Equal(2M, lambdaParser.Eval(" new dictionary{ {\"a\", 1}, {\"b\", 2}, {\"c\", 3} }[\"b\"] ", varContext));
var arr = ((Array)lambdaParser.Eval(" new []{ new dictionary{{\"test\",2}}, new[] { one } }", varContext));
Assert.Equal(2M, ((IDictionary)arr.GetValue(0))["test"]);
Assert.Equal(1M, ((Array)arr.GetValue(1)).GetValue(0));
Assert.Equal("str", lambdaParser.Eval(" testObj.GetDelegNoParam()() ", varContext));
Assert.Equal("zzz", lambdaParser.Eval(" testObj.GetDelegOneParam()(\"zzz\") ", varContext));
Assert.Equal(false, lambdaParser.Eval("(testObj.FldTrue and false) || (testObj.FldTrue && false)", varContext));
Assert.Equal(true, lambdaParser.Eval("false or testObj.FldTrue", varContext));
Assert.Equal("True", lambdaParser.Eval("testObj.BoolParam(true)", varContext));
Assert.Equal("True", lambdaParser.Eval("getTestObj().BoolParam(true)", varContext));
Assert.Equal("NReco.Linq.Tests.LambdaParserTests+TestClass", lambdaParser.Eval("toString(testObj)", varContext));
Assert.True((bool)lambdaParser.Eval("true && NOT( false )", varContext));
Assert.True((bool)lambdaParser.Eval("true && !( false )", varContext));
Assert.False((bool)lambdaParser.Eval("!Yes", varContext));
Assert.True((bool)lambdaParser.Eval("5>two && (5>7 || test.Contains(\"t\") )", varContext));
Assert.True((bool)lambdaParser.Eval("null!=test && test!=null && test.Contains(\"t\") && true == Yes && false==!Yes && false!=Yes", varContext));
Assert.Equal(new DateTime().AddDays(2), lambdaParser.Eval("day1 + oneDay", varContext));
Assert.Equal(new DateTime().AddDays(2), lambdaParser.Eval("oneDay + day1", varContext));
Assert.Equal(new DateTime().AddDays(1), lambdaParser.Eval("day2 - oneDay", varContext));
Assert.Equal(new DateTime().AddDays(1), lambdaParser.Eval("day2 + -oneDay", varContext));
Assert.Equal(new DateTime().AddDays(1), lambdaParser.Eval("-oneDay + day2", varContext));
Assert.Equal(new TimeSpan(1, 0, 0, 0), lambdaParser.Eval("day2 - day1", varContext));
Assert.Equal(new TimeSpan(1, 0, 0, 0).Negate(), lambdaParser.Eval("day1 - day2", varContext));
Assert.Equal(new TimeSpan(1, 0, 0, 0), lambdaParser.Eval("day2 - day1", varContext));
Assert.Equal(new TimeSpan(2, 0, 0, 0), lambdaParser.Eval("oneDay + oneDay", varContext));
Assert.Equal(new TimeSpan(1, 0, 0, 0), lambdaParser.Eval("twoDays - oneDay", varContext));
Assert.Equal(new TimeSpan(1, 0, 0, 0), lambdaParser.Eval("twoDays + -oneDay", varContext));
Assert.Equal(new TimeSpan(1, 0, 0, 0).Negate(), lambdaParser.Eval("oneDay - twoDays", varContext));
Assert.Equal(new TimeSpan(1, 0, 0, 0).Negate(), lambdaParser.Eval("-twoDays + oneDay", varContext));
}
public ExpressionHelper(string expression)
{
var parser = new LambdaParser();
m_compiledExpression = parser.CompileExpression(expression);
}
public void Eval()
{
var lambdaParser = new LambdaParser();
var varContext = new Dictionary <string, object>();
varContext["pi"] = 3.14M;
varContext["one"] = 1M;
varContext["two"] = 2M;
varContext["test"] = "test";
varContext["now"] = DateTime.Now;
varContext["testObj"] = new TestClass();
varContext["arr1"] = new double[] { 1.5, 2.5 };
Assert.AreEqual(3, lambdaParser.Eval("1+2", varContext));
Assert.AreEqual(6, lambdaParser.Eval("1+2+3", varContext));
Assert.AreEqual("b{0}_", lambdaParser.Eval("\"b{0}_\"", varContext));
Assert.AreEqual(3, lambdaParser.Eval("(1+(3-1)*4)/3", varContext));
Assert.AreEqual(1, lambdaParser.Eval("one*5*one-(-1+5*5%10)", varContext));
Assert.AreEqual("ab", lambdaParser.Eval("\"a\"+\"b\"", varContext));
Assert.AreEqual(4.14, lambdaParser.Eval("pi + 1", varContext));
Assert.AreEqual(5.14, lambdaParser.Eval("2 +pi", varContext));
Assert.AreEqual(2.14, lambdaParser.Eval("pi + -one", varContext));
Assert.AreEqual("test1", lambdaParser.Eval("test + \"1\"", varContext));
Assert.AreEqual(1, lambdaParser.Eval("true or false ? 1 : 0", varContext));
Assert.AreEqual(true, lambdaParser.Eval("5<=3 ? false : true", varContext));
Assert.AreEqual(5, lambdaParser.Eval("pi>one && 0<one ? (1+8)/3+1*two : 0", varContext));
Assert.AreEqual(4, lambdaParser.Eval("pi==true ? one+two+one : 0", varContext));
Assert.AreEqual(DateTime.Now.Year, lambdaParser.Eval("now.Year", varContext));
Assert.AreEqual(true, lambdaParser.Eval(" (1+testObj.IntProp)==2 ? testObj.FldTrue : false ", varContext));
Assert.AreEqual("ab2_3", lambdaParser.Eval(" \"a\"+testObj.Format(\"b{0}_{1}\", 2, \"3\".ToString() ).ToString() ", varContext));
Assert.AreEqual(true, lambdaParser.Eval(" testObj.Hash[\"a\"] == \"1\"", varContext));
Assert.AreEqual(true, lambdaParser.Eval(" (testObj.Hash[\"a\"]-1)==testObj.Hash[\"b\"].Length ", varContext));
Assert.AreEqual(4.0, lambdaParser.Eval(" arr1[0]+arr1[1] ", varContext));
Assert.AreEqual(2, lambdaParser.Eval(" (new[]{1,2})[1] ", varContext));
Assert.AreEqual(true, lambdaParser.Eval(" new[]{ one } == new[] { 1 } ", varContext));
Assert.AreEqual(3, lambdaParser.Eval(" new dictionary{ {\"a\", 1}, {\"b\", 2}, {\"c\", 3} }.Count ", varContext));
Assert.AreEqual(2, lambdaParser.Eval(" new dictionary{ {\"a\", 1}, {\"b\", 2}, {\"c\", 3} }[\"b\"] ", varContext));
var arr = ((Array)lambdaParser.Eval(" new []{ new dictionary{{\"test\",2}}, new[] { one } }", varContext));
Assert.AreEqual(2, ((IDictionary)arr.GetValue(0))["test"]);
Assert.AreEqual(1, ((Array)arr.GetValue(1)).GetValue(0));
Assert.AreEqual("str", lambdaParser.Eval(" testObj.GetDelegNoParam()() ", varContext));
Assert.AreEqual("zzz", lambdaParser.Eval(" testObj.GetDelegOneParam()(\"zzz\") ", varContext));
Assert.AreEqual(false, lambdaParser.Eval("(testObj.FldTrue and false) || (testObj.FldTrue && false)", varContext));
Assert.AreEqual(true, lambdaParser.Eval("false or testObj.FldTrue", varContext));
Assert.AreEqual("True", lambdaParser.Eval("testObj.BoolParam(true)", varContext));
}
public void ApplyingARuleZeroOrMoreTimes()
{
var parser = ZeroOrMore(AB);
parser.Parses(Tokenize("")).Value.ShouldBeEmpty();
parser.PartiallyParses(Tokenize("AB!"))
.LeavingUnparsedTokens("!")
.WithValue(Literals("AB"));
parser.PartiallyParses(Tokenize("ABAB!"))
.LeavingUnparsedTokens("!")
.WithValue(Literals("AB", "AB"));
parser.FailsToParse(Tokenize("ABABA!"))
.LeavingUnparsedTokens("!")
.WithMessage("(1, 6): B expected");
Parser<Token> succeedWithoutConsuming = new LambdaParser<Token>(tokens => new Parsed<Token>(null, tokens));
Action infiniteLoop = () => ZeroOrMore(succeedWithoutConsuming).Parse(new TokenStream(Tokenize("")));
infiniteLoop.ShouldThrow<Exception>("Parser encountered a potential infinite loop at position (1, 1).");
}
private void Run(string name)
{
string outDir = "ExprParser";
string text = GetResText(InResName(name));
string inName = name + "Input.txt";
string outName = name + "Output.txt";
string outNameAssem = name + "Output.Assem.txt";
string outPath = DeleteOutputPath(outDir, outName);
string outPathAssem = DeleteOutputPath(outDir, outNameAssem);
using (var wr = OpenWriter(outPath))
{
var wrt = new IndentedTextWriter(wr, " ");
// Individual scripts are separated by $.
// Inputs start after #.
int count = 0;
int ichLim = 0;
int lineLim = 1;
for (; ichLim < text.Length; ichLim++)
{
int ichMin = ichLim;
int lineMin = lineLim;
while (ichLim < text.Length && text[ichLim] != '$')
{
if (text[ichLim] == '\n')
{
lineLim++;
}
ichLim++;
}
while (ichMin < ichLim && char.IsWhiteSpace(text[ichMin]))
{
if (text[ichMin] == '\n')
{
lineMin++;
}
ichMin++;
}
if (ichMin >= ichLim)
{
continue;
}
// Process the script.
count++;
string scriptName = string.Format("Script {0}, lines {1} to {2}", count, lineMin, lineLim);
wrt.WriteLine("===== Start {0} =====", scriptName);
var types = ParseTypes(text, ref ichMin, ichLim);
int ichLimChars = text.IndexOf('#', ichMin);
if (ichLimChars < 0 || ichLimChars >= ichLim)
{
ichLimChars = ichLim;
}
else
{
Contracts.Assert(ichMin < ichLimChars && ichLimChars < ichLim);
}
CharCursor chars = new CharCursor(text, ichMin, ichLimChars);
Delegate del = null;
lock (_sync)
{
try
{
LambdaNode node;
List <Error> errors;
List <int> lineMap;
var perm = Utils.GetIdentityPermutation(types.Length);
using (wrt.Nest())
{
node = LambdaParser.Parse(out errors, out lineMap, chars, perm, types);
}
Check(node != null, "Null LambdaNode");
if (Utils.Size(errors) > 0)
{
DumpErrors(wrt, lineMap, lineMin, inName, "Parsing", errors);
goto LDone;
}
LambdaBinder.Run(Env, ref errors, node, msg => wr.WriteLine(msg));
if (Utils.Size(errors) > 0)
{
DumpErrors(wrt, lineMap, lineMin, inName, "Binding", errors);
goto LDone;
}
wrt.WriteLine("Binding succeeded. Output type: {0}", node.ResultType);
del = LambdaCompiler.Compile(out errors, node);
Contracts.Assert(TestFuncs1.Writer == null);
TestFuncs1.Writer = wr;
if (Utils.Size(errors) > 0)
{
DumpErrors(wrt, lineMap, lineMin, inName, "Compiling", errors);
goto LDone;
}
wrt.WriteLine("Compiling succeeded.");
if (ichLimChars < ichLim)
{
Evaluate(wrt, del, node.ResultType, types, text, ichLimChars + 1, ichLim);
}
}
catch (Exception ex)
{
if (!ex.IsMarked())
{
wrt.WriteLine("Unknown Exception: {0}!", del != null ? del.GetMethodInfo().DeclaringType : (object)"<null>");
}
wrt.WriteLine("Exception: {0}", ex.Message);
}
finally
{
TestFuncs1.Writer = null;
}
LDone:
wrt.WriteLine("===== End {0} =====", scriptName);
}
}
}
CheckEquality(outDir, outName, digitsOfPrecision: 6);
Done();
}
public void Eval()
{
var lambdaParser = new LambdaParser();
var varContext = new Dictionary <string, object>();
varContext["pi"] = 3.14M;
varContext["one"] = 1M;
varContext["two"] = 2M;
varContext["test"] = "test";
varContext["now"] = DateTime.Now;
varContext["testObj"] = new TestClass();
varContext["arr1"] = new double[] { 1.5, 2.5 };
varContext["NOT"] = (Func <bool, bool>)((t) => !t);
varContext["Yes"] = true;
varContext["nullVar"] = null;
varContext["name_with_underscore"] = "a_b";
varContext["_name_with_underscore"] = "_a_b";
Assert.AreEqual("st", lambdaParser.Eval("test.Substring(2)", varContext));
Assert.AreEqual(3, lambdaParser.Eval("1+2", varContext));
Assert.AreEqual(6, lambdaParser.Eval("1+2+3", varContext));
Assert.AreEqual("b{0}_", lambdaParser.Eval("\"b{0}_\"", varContext));
Assert.AreEqual(3, lambdaParser.Eval("(1+(3-1)*4)/3", varContext));
Assert.AreEqual(1, lambdaParser.Eval("one*5*one-(-1+5*5%10)", varContext));
Assert.AreEqual("ab", lambdaParser.Eval("\"a\"+\"b\"", varContext));
Assert.AreEqual(4.14, lambdaParser.Eval("pi + 1", varContext));
Assert.AreEqual(5.14, lambdaParser.Eval("2 +pi", varContext));
Assert.AreEqual(2.14, lambdaParser.Eval("pi + -one", varContext));
Assert.AreEqual("test1", lambdaParser.Eval("test + \"1\"", varContext));
Assert.AreEqual("a_b_a_b", lambdaParser.Eval(" name_with_underscore + _name_with_underscore ", varContext));
Assert.AreEqual(1, lambdaParser.Eval("true or false ? 1 : 0", varContext));
Assert.AreEqual(true, lambdaParser.Eval("5<=3 ? false : true", varContext));
Assert.AreEqual(5, lambdaParser.Eval("pi>one && 0<one ? (1+8)/3+1*two : 0", varContext));
Assert.AreEqual(4, lambdaParser.Eval("pi>0 ? one+two+one : 0", varContext));
Assert.AreEqual(DateTime.Now.Year, lambdaParser.Eval("now.Year", varContext));
Assert.AreEqual(true, lambdaParser.Eval(" (1+testObj.IntProp)==2 ? testObj.FldTrue : false ", varContext));
Assert.AreEqual("ab2_3", lambdaParser.Eval(" \"a\"+testObj.Format(\"b{0}_{1}\", 2, \"3\".ToString() ).ToString() ", varContext));
Assert.AreEqual(true, lambdaParser.Eval(" testObj.Hash[\"a\"] == \"1\"", varContext));
Assert.AreEqual(true, lambdaParser.Eval(" (testObj.Hash[\"a\"]-1)==testObj.Hash[\"b\"].Length ", varContext));
Assert.AreEqual(4.0, lambdaParser.Eval(" arr1[0]+arr1[1] ", varContext));
Assert.AreEqual(2, lambdaParser.Eval(" (new[]{1,2})[1] ", varContext));
Assert.AreEqual(true, lambdaParser.Eval(" new[]{ one } == new[] { 1 } ", varContext));
Assert.AreEqual(3, lambdaParser.Eval(" new dictionary{ {\"a\", 1}, {\"b\", 2}, {\"c\", 3} }.Count ", varContext));
Assert.AreEqual(2, lambdaParser.Eval(" new dictionary{ {\"a\", 1}, {\"b\", 2}, {\"c\", 3} }[\"b\"] ", varContext));
var arr = ((Array)lambdaParser.Eval(" new []{ new dictionary{{\"test\",2}}, new[] { one } }", varContext));
Assert.AreEqual(2, ((IDictionary)arr.GetValue(0))["test"]);
Assert.AreEqual(1, ((Array)arr.GetValue(1)).GetValue(0));
Assert.AreEqual("str", lambdaParser.Eval(" testObj.GetDelegNoParam()() ", varContext));
Assert.AreEqual("zzz", lambdaParser.Eval(" testObj.GetDelegOneParam()(\"zzz\") ", varContext));
Assert.AreEqual(false, lambdaParser.Eval("(testObj.FldTrue and false) || (testObj.FldTrue && false)", varContext));
Assert.AreEqual(true, lambdaParser.Eval("false or testObj.FldTrue", varContext));
Assert.AreEqual("True", lambdaParser.Eval("testObj.BoolParam(true)", varContext));
Assert.IsTrue((bool)lambdaParser.Eval("true && NOT( false )", varContext));
Assert.IsTrue((bool)lambdaParser.Eval("true && !( false )", varContext));
Assert.IsFalse((bool)lambdaParser.Eval("!Yes", varContext));
Assert.IsTrue((bool)lambdaParser.Eval("null == nullVar", varContext));
Assert.IsTrue((bool)lambdaParser.Eval("5>nullVar", varContext));
Assert.IsTrue((bool)lambdaParser.Eval("testObj!=null", varContext));
Assert.AreEqual(0, LambdaParser.GetExpressionParameters(lambdaParser.Parse("20 == null")).Length);
lambdaParser = new LambdaParser(new ValueComparer()
{
NullComparison = ValueComparer.NullComparisonMode.Sql
});
Assert.IsFalse((bool)lambdaParser.Eval("null == nullVar", varContext));
Assert.IsFalse((bool)lambdaParser.Eval("nullVar<5", varContext));
Assert.IsFalse((bool)lambdaParser.Eval("nullVar>5", varContext));
}
