public void ParserExpCollection()
{
string sourceCode =
"10 A = 1 + 1 - 2 \n" +
"20 A = A + 1 * 7 \n" +
"30 A = 1 + A / 8 - ( 11 + 2 ) \n" +
"40 A = -(A + A) * C \n" +
"50 A = A - C * 1 + B \n" +
"60 A = \"TT\" + \"FF\" \n" +
"70 A = 7 + B : B = 1 + 9 \n" +
"80 A = 1 + 1 + 2 + A:B = 11 + 9";
Tokenizer tokenizer = new Tokenizer(sourceCode);
Parser parser = new Parser(tokenizer);
parser.Parsing();
// check statement
List<Statement> statements = parser.STATEMENTS;
if (statements.Count != 10)
throw new Exception("statement count incorrect.");
//TODO
}
static void Main(string[] args)
{
string path = null;
if (args.Length > 0)
path = args [0];
else
path = "../../../../Bas/_tank.bas";
// print the file path
System.Console.WriteLine("Run file: " + path);
// read the source
string sourceCode = System.IO.File.ReadAllText(path);
// lex
Tokenizer tok = new Tokenizer(sourceCode);
// parser
Parser parser = new Parser(tok);
// runtime
Runtime rt = new Runtime(parser);
rt.SetAPI(new DebugAPI());
rt.Run();
// wait for key press
System.Console.ReadKey();
}
/// <summary>
/// run the program
/// </summary>
/// <param name="code"></param>
static public DebugAPI RunProgram( string code )
{
Tokenizer tokenizer = new Tokenizer(code);
Parser parser = new Parser(tokenizer);
Runtime rt = new Runtime(parser);
DebugAPI api = new DebugAPI();
rt.SetAPI(api);
rt.Run();
while (!rt.Step()) ;
return api;
}
/// <summary>
/// constructor
/// </summary>
public Runtime(Parser parser)
{
m_parser = parser;
m_executer = new Dictionary<int, Action<Statement>>()
{
{ Statement.TYPE_PRINT, doPrint },
{ Statement.TYPE_ASSIGN, doAssign },
{ Statement.TYPE_IF, doIf },
{ Statement.TYPE_DATA, doData },
{ Statement.TYPE_READ, doRead },
{ Statement.TYPE_RESTORE, doRestore },
{ Statement.TYPE_GOTO, doGoto },
{ Statement.TYPE_END, doEnd },
{ Statement.TYPE_FOR_BEGIN, doForBegin },
{ Statement.TYPE_FOR_END, doForEnd },
{ Statement.TYPE_WHILE_BEGIN, onWhileBegin },
{ Statement.TYPE_WHILE_END, onWhileEnd },
{ Statement.TYPE_ON_GOTO, onOnGoto },
{ Statement.TYPE_GOSUB, onGoSub },
{ Statement.TYPE_RETURN, onReturn },
{ Statement.TYPE_POP, onPop },
{ Statement.TYPE_DEF_FN, onDefFn },
{ Statement.TYPE_DIM, onDim },
{ Statement.TYPE_SWAP, onSwap },
{ Statement.TYPE_INPUT, onInput },
{ Statement.TYPE_SIMPLE_CMD, onSimpleCmd },
{ Statement.TYPE_PARAM_CMD, onParamCmd },
};
// initial the context
m_dataRegion = new DataArea();
m_symbolTable = new SymbolTable();
m_forLoopStack = new Stack<ForRecord>();
m_whileLoopStack = new Stack<WhileRecord>();
m_goSubStack = new Stack<int>();
m_innerFunc = new BuildinFunc();
}
public void ParserIf()
{
string sourceCode =
@"10 IF A>1 THEN PRINT C
20 IF C=2 THEN PRINT 11 ELSE PRINT 22
30 IF B<=1 GOTO 13
40 IF E>0 GOTO 11 ELSE 70
50 IF F < 6 AND G > 8 THEN PRINT theStr:C=17 ELSE 70";
Tokenizer tokenizer = new Tokenizer(sourceCode);
Parser parser = new Parser(tokenizer);
parser.Parsing();
// check statement
List<Statement> statements = parser.STATEMENTS;
if (statements.Count != 5)
throw new Exception("statement count incorrect.");
//TODO
}