public void TestCanHandleMultipleSyntaxErrors()
{
// Missing semicolons
var lines = new List<string>
{
"var nTimes int := 0",
"var s ,,: string \"How many times?\"",
"print s",
"read nTimes",
"var x : int",
"x = 0",
"for x in 0..nTimes-1 ",
" print x",
" print \" : Hello, World!\\n\"",
"end fo",
"var b : bool := x = nTimes",
"assert (b"
};
var scanner = new Scanner();
try
{
var tokens = scanner.Tokenize(lines);
_parser.Parse(tokens);
Assert.Fail("Did not throw ParserException.");
}
catch (ParserException exception)
{
var errors = exception.Errors;
Assert.IsNotNull(errors);
Assert.IsTrue(0 < errors.Count);
}
}
/// <summary>
/// Reads the Mini-PL source code and executes it.
/// </summary>
/// <param name="args">File name or path/fileName</param>
public static void Main(string[] args)
{
if ( args.Length < 1 )
{
Console.WriteLine("You must give a file name or a path/fileName as a parameter");
return;
}
if ( args.Length > 1 )
{
Console.WriteLine("Too many parameters");
return;
}
var fileReader = new FileReader(FileExtension);
try
{
var lines = fileReader.ReadFile(args[0]);
var scanner = new Scanner();
var tokens = scanner.Tokenize(lines);
var parser = new Parser();
var tree = parser.Parse(tokens);
tree.Execute();
}
catch(AssertFailedException)
{
// Code had an assert statement, which failed
}
catch (Exception e)
{
Console.WriteLine(e.Message);
Console.ReadKey();
}
}
protected void SetUp()
{
var scanner = new Scanner();
_parser = new Parser();
_correctSourceCodes = new[] {
new List<string>
{
"var nTimes : int := 0;",
"var s : string := \"How many times?\";",
"print s;",
"read nTimes;",
"var x : int;",
"x := 0;",
"for x in 0..nTimes-1 do ",
" print x;",
" print \" : Hello, World!\\n\";",
"end for;",
"var b : bool := x = nTimes;",
"assert (b);"
},
new List<string>
{
"var x : int;",
"var y : bool;",
"var z : string;",
},
new List<string>
{
"var x : int := (4 + (6 * 2))/(2-0);",
"var y : bool := !true & true;",
"var z : bool := 3 < 2;",
"assert(x > 2);",
"assert(3 >= 2);",
"assert(x <= 12);",
"assert(x = 8);",
},
new List<string>
{
"var x : int := (4 + (6 * 2))/(2-0);",
"var y : bool := !true & true;",
"var z : bool := 3 < 2;",
"assert(x > 2);",
"assert(3 >= 2);",
"assert(x <= 12);",
"assert(x = 8);",
"for x in 0..5*4 do",
"print x;",
"end for;",
"read x;"
},
new List<string>
{
"var x : int := 3;",
"var y2k : bool := true;",
"var CONSTANT_TEST : string := \"test\";",
"assert(x > 2);",
"assert(y2k != false);",
"assert(CONSTANT_TEST = \"test\");"
},
new List<string>
{
"var i : int; // := 0;",
"//var s : string := \"How many times?\";",
"var b : bool := true;",
},
new List<string>
{
"var i : int; /* := 0;",
"//var s : string := \"How many times?\";*/",
"var b : bool := true;",
}};
_correctSourceCodeTokens = new List<Token>[_correctSourceCodes.Length];
for (var i = 0; i < _correctSourceCodeTokens.Length; i++)
{
_correctSourceCodeTokens[i] = scanner.Tokenize(_correctSourceCodes[i]);
}
}