public void ParseDefineVariable()
{
Parser parser = new Parser("var a;");
var result = parser.ParseCommand();
Assert.IsNotNull(result);
Assert.IsInstanceOfType(result, typeof(DefineVariableCommand));
DefineVariableCommand dvcmd = (DefineVariableCommand)result;
Assert.AreEqual("a", dvcmd.Name);
Assert.IsNull(dvcmd.Expression);
}
public void ParseCompositeCommand()
{
Parser parser = new Parser("{ a = 1; b = 2; }");
var result = parser.ParseCommand();
Assert.IsNotNull(result);
Assert.IsInstanceOfType(result, typeof(CompositeCommand));
CompositeCommand command = (CompositeCommand)result;
Assert.AreEqual(2, command.Commands.Count());
}
public void ParseArrayExpression()
{
Parser parser = new Parser("[1,2,3]");
var result = parser.ParseExpression();
Assert.IsNotNull(result);
Assert.IsInstanceOfType(result, typeof(ArrayExpression));
ArrayExpression expr = (ArrayExpression)result;
Assert.IsNotNull(expr.Expressions);
Assert.AreEqual(3, expr.Expressions.Count());
}
static void Main(string[] args)
{
System.Console.WriteLine("DartSharp 0.0.0");
Lexer lexer = new Lexer(System.Console.In);
Context context = new Context();
context.SetValue("print", new Print(System.Console.Out));
Parser parser = new Parser(lexer);
for (ICommand cmd = parser.ParseCommand(); cmd != null; cmd = parser.ParseCommand())
{
cmd.Execute(context);
}
}
public void ParseDefineClassCommand()
{
Parser parser = new Parser("class MyClass { } ");
var result = parser.ParseCommand();
Assert.IsNotNull(result);
Assert.IsInstanceOfType(result, typeof(DefineClassCommand));
DefineClassCommand command = (DefineClassCommand)result;
Assert.AreEqual("MyClass", command.Name);
Assert.IsNull(command.Command);
Assert.IsNull(parser.ParseCommand());
}
public void RaiseIfEndOfInput()
{
Parser parser = new Parser("int myfun(");
parser.ParseCommand();
}
public void RaiseIfBinaryOperator()
{
Parser parser = new Parser("==");
parser.ParseExpression();
}
public void ParseClosingParenthesisAsNoExpression()
{
Parser parser = new Parser(")");
Assert.IsNull(parser.ParseExpression());
}
private static object EvaluateExpression(string text, Context context)
{
Parser parser = new Parser(text);
var result = parser.ParseExpression();
Assert.IsNull(parser.ParseExpression());
return result.Evaluate(context);
}
public void ParseSimpleCall()
{
Parser parser = new Parser("prints(1)");
IExpression expr = parser.ParseExpression();
Assert.IsNotNull(expr);
Assert.IsInstanceOfType(expr, typeof(CallExpression));
CallExpression cexpr = (CallExpression)expr;
Assert.IsInstanceOfType(cexpr.Expression, typeof(VariableExpression));
Assert.AreEqual(1, cexpr.Arguments.Count());
Assert.IsInstanceOfType(cexpr.Arguments.First(), typeof(ConstantExpression));
}
public void RaiseIfSemicolonIsMissing()
{
Parser parser = new Parser("a=1");
parser.ParseCommand();
}
public void RaiseIfNoCommaToSeparateArguments()
{
Parser parser = new Parser("int myfun(int a int b) { return a+b; }");
parser.ParseCommand();
}
public void ParseTwoCommands()
{
Parser parser = new Parser("a=1;\r\nb=1;");
IList<ICommand> commands = parser.ParseCommands();
Assert.IsNotNull(commands);
Assert.AreEqual(2, commands.Count);
ICommand command = commands[0];
Assert.IsNotNull(command);
Assert.IsInstanceOfType(command, typeof(SetVariableCommand));
SetVariableCommand scommand = (SetVariableCommand)command;
Assert.AreEqual("a", scommand.Name);
Assert.IsInstanceOfType(scommand.Expression, typeof(ConstantExpression));
ConstantExpression cexpr = (ConstantExpression)scommand.Expression;
Assert.AreEqual(1, cexpr.Value);
command = commands[1];
Assert.IsNotNull(command);
Assert.IsInstanceOfType(command, typeof(SetVariableCommand));
scommand = (SetVariableCommand)command;
Assert.AreEqual("b", scommand.Name);
Assert.IsInstanceOfType(scommand.Expression, typeof(ConstantExpression));
cexpr = (ConstantExpression)scommand.Expression;
Assert.AreEqual(1, cexpr.Value);
Assert.IsNull(parser.ParseCommand());
}
public void ParseSimpleCallAsCommandPrecededByNewLine()
{
Parser parser = new Parser("\r\nprints(1);");
ICommand cmd = parser.ParseCommand();
Assert.IsNotNull(cmd);
Assert.IsInstanceOfType(cmd, typeof(ExpressionCommand));
ExpressionCommand ccmd = (ExpressionCommand)cmd;
Assert.IsInstanceOfType(ccmd.Expression, typeof(CallExpression));
}
public void ParseTrueAsConstant()
{
Parser parser = new Parser("true");
var result = parser.ParseExpression();
Assert.IsNotNull(result);
Assert.IsInstanceOfType(result, typeof(ConstantExpression));
ConstantExpression expression = (ConstantExpression)result;
Assert.AreEqual(true, expression.Value);
}
public void ParseSimpleWhileCommand()
{
Parser parser = new Parser("while (a) \r\n b = 2;");
var result = parser.ParseCommand();
Assert.IsNotNull(result);
Assert.IsInstanceOfType(result, typeof(WhileCommand));
WhileCommand command = (WhileCommand)result;
Assert.IsNotNull(command.Condition);
Assert.IsNotNull(command.Command);
}
public void ParseSimpleSum()
{
Parser parser = new Parser("1+2");
var result = parser.ParseExpression();
Assert.IsNull(parser.ParseExpression());
Assert.IsNotNull(result);
Assert.IsInstanceOfType(result, typeof(ArithmeticBinaryExpression));
ArithmeticBinaryExpression expression = (ArithmeticBinaryExpression)result;
Assert.IsInstanceOfType(expression.LeftExpression, typeof(ConstantExpression));
Assert.IsInstanceOfType(expression.RightExpression, typeof(ConstantExpression));
}
public void ParseSimpleString()
{
Parser parser = new Parser("\"foo\"");
IExpression expr = parser.ParseExpression();
Assert.IsNotNull(expr);
Assert.IsInstanceOfType(expr, typeof(ConstantExpression));
ConstantExpression cexpr = (ConstantExpression)expr;
Assert.AreEqual("foo", cexpr.Evaluate(null));
Assert.IsNull(parser.ParseExpression());
}
public void ParseSimpleIfCommand()
{
Parser parser = new Parser("if (a) \r\n b = 2;");
var result = parser.ParseCommand();
Assert.IsNotNull(result);
Assert.IsInstanceOfType(result, typeof(IfCommand));
IfCommand command = (IfCommand)result;
Assert.IsNotNull(command.Condition);
Assert.IsNotNull(command.ThenCommand);
Assert.IsNull(command.ElseCommand);
}
public void RaiseIfMissingClosingParenthesis()
{
Parser parser = new Parser("prints(1");
parser.ParseExpression();
}
public void RaiseIfMissingParenthesis()
{
Parser parser = new Parser("int myfun( { return a+b; }");
parser.ParseCommand();
}
public void ParseTwoLineSimpleAssignmentCommands()
{
Parser parser = new Parser("a=1;\r\nb=1;");
ICommand command = parser.ParseCommand();
Assert.IsNotNull(command);
Assert.IsInstanceOfType(command, typeof(SetVariableCommand));
SetVariableCommand scommand = (SetVariableCommand)command;
Assert.AreEqual("a", scommand.Name);
Assert.IsInstanceOfType(scommand.Expression, typeof(ConstantExpression));
ConstantExpression cexpr = (ConstantExpression)scommand.Expression;
Assert.AreEqual(1, cexpr.Value);
command = parser.ParseCommand();
Assert.IsNotNull(command);
Assert.IsInstanceOfType(command, typeof(SetVariableCommand));
scommand = (SetVariableCommand)command;
Assert.AreEqual("b", scommand.Name);
Assert.IsInstanceOfType(scommand.Expression, typeof(ConstantExpression));
cexpr = (ConstantExpression)scommand.Expression;
Assert.AreEqual(1, cexpr.Value);
Assert.IsNull(parser.ParseCommand());
}
public void RaiseIfNoTypeInArgument()
{
Parser parser = new Parser("int myfun(a, b) { return a+b; }");
parser.ParseCommand();
}
public void ParseTwoSimpleCallsAsCommands()
{
Parser parser = new Parser("print(1);\r\nprint(2);\r\n");
ICommand cmd = parser.ParseCommand();
Assert.IsNotNull(cmd);
Assert.IsInstanceOfType(cmd, typeof(ExpressionCommand));
ExpressionCommand ccmd = (ExpressionCommand)cmd;
Assert.IsInstanceOfType(ccmd.Expression, typeof(CallExpression));
cmd = parser.ParseCommand();
Assert.IsNotNull(cmd);
Assert.IsInstanceOfType(cmd, typeof(ExpressionCommand));
ccmd = (ExpressionCommand)cmd;
Assert.IsInstanceOfType(ccmd.Expression, typeof(CallExpression));
Assert.IsNull(parser.ParseCommand());
}
public void RaiseNameExpected()
{
Parser parser = new Parser("var 1;");
parser.ParseCommand();
}
public void ParseClosingBraceAsNoCommand()
{
Parser parser = new Parser("}");
Assert.IsNull(parser.ParseCommands());
}
private static void EvaluateCommands(string text, Context context)
{
Parser parser = new Parser(text);
var result = parser.ParseCommands();
var command = new CompositeCommand(result);
command.Execute(context);
}
public void ParseVoidFunctionDefinition()
{
Parser parser = new Parser("void myfun() { a = 1; b = 2; }");
var result = parser.ParseCommand();
Assert.IsNotNull(result);
Assert.IsInstanceOfType(result, typeof(DefineFunctionCommand));
DefineFunctionCommand command = (DefineFunctionCommand)result;
Assert.AreEqual("myfun", command.Name);
Assert.IsInstanceOfType(command.Command, typeof(CompositeCommand));
}
public void ParseVariable()
{
Parser parser = new Parser("foo");
IExpression expr = parser.ParseExpression();
Assert.IsNotNull(expr);
Assert.IsInstanceOfType(expr, typeof(VariableExpression));
VariableExpression vexpr = (VariableExpression)expr;
Assert.AreEqual("foo", vexpr.Name);
Assert.IsNull(parser.ParseExpression());
}
public void ParseSimpleCallWithParenthesisAndTwoArguments()
{
Parser parser = new Parser("myfunc(a, b)");
IExpression expr = parser.ParseExpression();
Assert.IsNotNull(expr);
Assert.IsInstanceOfType(expr, typeof(CallExpression));
CallExpression cexpr = (CallExpression)expr;
Assert.IsInstanceOfType(cexpr.Expression, typeof(VariableExpression));
Assert.AreEqual(2, cexpr.Arguments.Count());
Assert.IsInstanceOfType(cexpr.Arguments.First(), typeof(VariableExpression));
Assert.IsInstanceOfType(cexpr.Arguments.Skip(1).First(), typeof(VariableExpression));
}
