public static int Parse (string s, string/*!*/ filename, out /*maybe null*/ Program program, bool useBaseName=false) /* throws System.IO.IOException */ {
Contract.Requires(s != null);
Contract.Requires(filename != null);
byte[]/*!*/ buffer = cce.NonNull(UTF8Encoding.Default.GetBytes(s));
MemoryStream ms = new MemoryStream(buffer,false);
Errors errors = new Errors();
Scanner scanner = new Scanner(ms, errors, filename, useBaseName);
Parser parser = new Parser(scanner, errors, false);
parser.Parse();
if (parser.errors.count == 0)
{
program = parser.Pgm;
program.ProcessDatatypeConstructors();
return 0;
}
else
{
program = null;
return parser.errors.count;
}
}
public Parser(Scanner/*!*/ scanner, Errors/*!*/ errors, bool disambiguation)
: this(scanner, errors)
{
// initialize readonly fields
Pgm = new Program();
dummyExpr = new LiteralExpr(Token.NoToken, false);
dummyCmd = new AssumeCmd(Token.NoToken, dummyExpr);
dummyBlock = new Block(Token.NoToken, "dummyBlock", new List<Cmd>(), new ReturnCmd(Token.NoToken));
dummyType = new BasicType(Token.NoToken, SimpleType.Bool);
dummyExprSeq = new List<Expr> ();
dummyTransferCmd = new ReturnCmd(Token.NoToken);
dummyStructuredCmd = new BreakCmd(Token.NoToken, null);
}
/*--------------------------------------------------------------------------*/
public Parser(Scanner/*!*/ scanner, Errors/*!*/ errors) {
this.scanner = scanner;
this.errors = errors;
Token/*!*/ tok = new Token();
tok.val = "";
this.la = tok;
this.t = new Token(); // just to satisfy its non-null constraint
}
// [NotDelayed]
public Scanner (Stream/*!*/ s, Errors/*!*/ errorHandler, string/*!*/ fileName, bool useBaseName = false) : base() {
Contract.Requires(s != null);
Contract.Requires(errorHandler != null);
Contract.Requires(fileName != null);
pt = tokens = new Token(); // first token is a dummy
t = new Token(); // dummy because t is a non-null field
this._buffer = new Buffer(s, true);
this.errorHandler = errorHandler;
this.Filename = useBaseName? GetBaseName(fileName) : fileName;
Init();
}
// [NotDelayed]
public Scanner (string/*!*/ fileName, Errors/*!*/ errorHandler, bool useBaseName = false) : base() {
Contract.Requires(fileName != null);
Contract.Requires(errorHandler != null);
this.errorHandler = errorHandler;
pt = tokens = new Token(); // first token is a dummy
t = new Token(); // dummy because t is a non-null field
try {
Stream stream = new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.Read);
this._buffer = new Buffer(stream, false);
Filename = useBaseName? GetBaseName(fileName): fileName;
Init();
} catch (IOException) {
throw new FatalError("Cannot open file " + fileName);
}
}
public BigBlocksResolutionContext(StmtList stmtList, Errors errorHandler)
{
Contract.Requires(errorHandler != null);
Contract.Requires(stmtList != null);
this.stmtList = stmtList;
this.errorHandler = errorHandler;
ComputeAllLabels(stmtList);
}
public Implementation(IToken/*!*/ tok,
string/*!*/ name,
List<TypeVariable>/*!*/ typeParams,
List<Variable>/*!*/ inParams,
List<Variable>/*!*/ outParams,
List<Variable>/*!*/ localVariables,
[Captured] StmtList/*!*/ structuredStmts,
QKeyValue kv,
Errors/*!*/ errorHandler)
: base(tok, name, typeParams, inParams, outParams) {
Contract.Requires(tok != null);
Contract.Requires(name != null);
Contract.Requires(typeParams != null);
Contract.Requires(inParams != null);
Contract.Requires(outParams != null);
Contract.Requires(localVariables != null);
Contract.Requires(structuredStmts != null);
Contract.Requires(errorHandler != null);
LocVars = localVariables;
StructuredStmts = structuredStmts;
BigBlocksResolutionContext ctx = new BigBlocksResolutionContext(structuredStmts, errorHandler);
Blocks = ctx.Blocks;
BlockPredecessorsComputed = false;
scc = null;
Attributes = kv;
}
public Implementation(IToken tok, string name, List<TypeVariable> typeParams, List<Variable> inParams, List<Variable> outParams, List<Variable> localVariables, [Captured] StmtList structuredStmts, Errors errorHandler)
: this(tok, name, typeParams, inParams, outParams, localVariables, structuredStmts, null, errorHandler) {
Contract.Requires(errorHandler != null);
Contract.Requires(structuredStmts != null);
Contract.Requires(localVariables != null);
Contract.Requires(outParams != null);
Contract.Requires(inParams != null);
Contract.Requires(typeParams != null);
Contract.Requires(name != null);
Contract.Requires(tok != null);
//:this(tok, name, typeParams, inParams, outParams, localVariables, structuredStmts, null, errorHandler);
}
