X-Git-Url: http://wien.tomnetworks.com/gitweb/?a=blobdiff_plain;f=mcs%2Fjay%2Fskeleton.cs;h=dda3811bdbe610f45ff599005ef953b25c417a5f;hb=559ad5b34bc086b51af2e589b32ea2eae0f78820;hp=32cf8980452e18bc5532dcf56329dd7027f2dd15;hpb=7e18ed47c9606f3981e7b18cbc238d6781843153;p=mono.git

diff --git a/mcs/jay/skeleton.cs b/mcs/jay/skeleton.cs
index 32cf8980452..dda3811bdbe 100644
--- a/mcs/jay/skeleton.cs
+++ b/mcs/jay/skeleton.cs
@@ -22,7 +22,10 @@
 .  public void yyerror (string message) {
 .    yyerror(message, null);
 .  }
-.
+.#pragma warning disable 649
+.  /* An EOF token */
+.  public int eof_token;
+.#pragma warning restore 649
 .  /** (syntax) error message.
 .      Can be overwritten to control message format.
 .      @param message text to be displayed.
@@ -56,14 +59,16 @@ t    if ((name = yyNames[token]) != null) return name;
 t    return "[unknown]";
 t  }
 .
+.#pragma warning disable 414
+.  int yyExpectingState;
+.#pragma warning restore 414
 .  /** computes list of expected tokens on error by tracing the tables.
 .      @param state for which to compute the list.
 .      @return list of token names.
 .    */
-.  protected string[] yyExpecting (int state) {
+.  protected int [] yyExpectingTokens (int state){
 .    int token, n, len = 0;
 .    bool[] ok = new bool[yyNames.Length];
-.
 .    if ((n = yySindex[state]) != 0)
 .      for (token = n < 0 ? -n : 0;
 .           (token < yyNames.Length) && (n+token < yyTable.Length); ++ token)
@@ -78,10 +83,16 @@ t  }
 .          ++ len;
 .          ok[token] = true;
 .        }
-.
-.    string [] result = new string[len];
+.    int [] result = new int [len];
 .    for (n = token = 0; n < len;  ++ token)
-.      if (ok[token]) result[n++] = yyNames[token];
+.      if (ok[token]) result[n++] = token;
+.    return result;
+.  }
+.  protected string[] yyExpecting (int state) {
+.    int [] tokens = yyExpectingTokens (state);
+.    string [] result = new string[tokens.Length];
+.    for (int n = 0; n < tokens.Length;  n++)
+.      result[n++] = yyNames[tokens [n]];
 .    return result;
 .  }
 .
@@ -114,6 +125,16 @@ t    this.debug = (yydebug.yyDebug)yyd;
 .    return first;
 .  }
 .
+.	static int[] global_yyStates;
+.	static object[] global_yyVals;
+.#pragma warning disable 649
+.	protected bool use_global_stacks;
+.#pragma warning restore 649
+.	object[] yyVals;					// value stack
+.	object yyVal;						// value stack ptr
+.	int yyToken;						// current input
+.	int yyTop;
+.
 .  /** the generated parser.
 .      Maintains a state and a value stack, currently with fixed maximum size.
 .      @param yyLex scanner.
@@ -121,36 +142,37 @@ t    this.debug = (yydebug.yyDebug)yyd;
 .      @throws yyException on irrecoverable parse error.
 .    */
 .  internal Object yyparse (yyParser.yyInput yyLex)
-.				{
-.    if (yyMax <= 0) yyMax = 256;			// initial size
-.    int yyState = 0;                                   // state stack ptr
-.    int [] yyStates = new int[yyMax];	                // state stack 
-.    Object yyVal = null;                               // value stack ptr
-.    Object [] yyVals = new Object[yyMax];	        // value stack
-.    int yyToken = -1;					// current input
+.  {
+.    if (yyMax <= 0) yyMax = 256;		// initial size
+.    int yyState = 0;                   // state stack ptr
+.    int [] yyStates;               	// state stack 
+.    yyVal = null;
+.    yyToken = -1;
 .    int yyErrorFlag = 0;				// #tks to shift
+.	if (use_global_stacks && global_yyStates != null) {
+.		yyVals = global_yyVals;
+.		yyStates = global_yyStates;
+.   } else {
+.		yyVals = new object [yyMax];
+.		yyStates = new int [yyMax];
+.		if (use_global_stacks) {
+.			global_yyVals = yyVals;
+.			global_yyStates = yyStates;
+.		}
+.	}
 .
  local		## %{ ... %} after the first %%
 
-.    int yyTop = 0;
-.    goto skip;
-.    yyLoop:
-.    yyTop++;
-.    skip:
-.    for (;; ++ yyTop) {
+.    /*yyLoop:*/ for (yyTop = 0;; ++ yyTop) {
 .      if (yyTop >= yyStates.Length) {			// dynamically increase
-.        int[] i = new int[yyStates.Length+yyMax];
-.        yyStates.CopyTo (i, 0);
-.        yyStates = i;
-.        Object[] o = new Object[yyVals.Length+yyMax];
-.        yyVals.CopyTo (o, 0);
-.        yyVals = o;
+.        global::System.Array.Resize (ref yyStates, yyStates.Length+yyMax);
+.        global::System.Array.Resize (ref yyVals, yyVals.Length+yyMax);
 .      }
 .      yyStates[yyTop] = yyState;
 .      yyVals[yyTop] = yyVal;
 t      if (debug != null) debug.push(yyState, yyVal);
 .
-.      yyDiscarded: for (;;) {	// discarding a token does not change stack
+.      /*yyDiscarded:*/ while (true) {	// discarding a token does not change stack
 .        int yyN;
 .        if ((yyN = yyDefRed[yyState]) == 0) {	// else [default] reduce (yyN)
 .          if (yyToken < 0) {
@@ -167,7 +189,7 @@ t              debug.shift(yyState, yyTable[yyN], yyErrorFlag-1);
 .            yyVal = yyLex.value();
 .            yyToken = -1;
 .            if (yyErrorFlag > 0) -- yyErrorFlag;
-.            goto yyLoop;
+.            goto continue_yyLoop;
 .          }
 .          if ((yyN = yyRindex[yyState]) != 0 && (yyN += yyToken) >= 0
 .              && yyN < yyTable.Length && yyCheck[yyN] == yyToken)
@@ -176,8 +198,10 @@ t              debug.shift(yyState, yyTable[yyN], yyErrorFlag-1);
 .            switch (yyErrorFlag) {
 .  
 .            case 0:
-.              yyerror(String.Format ("syntax error, got token `{0}'", yyname (yyToken)), yyExpecting(yyState));
+.              yyExpectingState = yyState;
+.              // yyerror(String.Format ("syntax error, got token `{0}'", yyname (yyToken)), yyExpecting(yyState));
 t              if (debug != null) debug.error("syntax error");
+.              if (yyToken == 0 /*eof*/ || yyToken == eof_token) throw new yyParser.yyUnexpectedEof ();
 .              goto case 1;
 .            case 1: case 2:
 .              yyErrorFlag = 3;
@@ -189,7 +213,7 @@ t                  if (debug != null)
 t                    debug.shift(yyStates[yyTop], yyTable[yyN], 3);
 .                  yyState = yyTable[yyN];
 .                  yyVal = yyLex.value();
-.                  goto yyLoop;
+.                  goto continue_yyLoop;
 .                }
 t                if (debug != null) debug.pop(yyStates[yyTop]);
 .              } while (-- yyTop >= 0);
@@ -205,13 +229,13 @@ t              if (debug != null)
 t                debug.discard(yyState, yyToken, yyname(yyToken),
 t  							yyLex.value());
 .              yyToken = -1;
-.              goto yyDiscarded;		// leave stack alone
+.              goto continue_yyDiscarded;		// leave stack alone
 .            }
 .        }
 .        int yyV = yyTop + 1-yyLen[yyN];
 t        if (debug != null)
-t          debug.reduce(yyState, yyStates[yyV-1], yyN, yyRule[yyN], yyLen[yyN]);
-.        yyVal = yyDefault(yyV > yyTop ? null : yyVals[yyV]);
+t          debug.reduce(yyState, yyStates[yyV-1], yyN, YYRules.getRule (yyN), yyLen[yyN]);
+.        yyVal = yyV > yyTop ? null : yyVals[yyV]; // yyVal = yyDefault(yyV > yyTop ? null : yyVals[yyV]);
 .        switch (yyN) {
 
  actions		## code from the actions within the grammar
@@ -233,7 +257,7 @@ t               debug.lex(yyState, yyToken,yyname(yyToken), yyLex.value());
 t            if (debug != null) debug.accept(yyVal);
 .            return yyVal;
 .          }
-.          goto yyLoop;
+.          goto continue_yyLoop;
 .        }
 .        if (((yyN = yyGindex[yyM]) != 0) && ((yyN += yyState) >= 0)
 .            && (yyN < yyTable.Length) && (yyCheck[yyN] == yyState))
@@ -241,8 +265,10 @@ t            if (debug != null) debug.accept(yyVal);
 .        else
 .          yyState = yyDgoto[yyM];
 t        if (debug != null) debug.shift(yyStates[yyTop], yyState);
-.	 goto yyLoop;
+.	 goto continue_yyLoop;
+.      continue_yyDiscarded: ;	// implements the named-loop continue: 'continue yyDiscarded'
 .      }
+.    continue_yyLoop: ;		// implements the named-loop continue: 'continue yyLoop'
 .    }
 .  }
 .
@@ -335,6 +361,12 @@ t        if (debug != null) debug.shift(yyStates[yyTop], yyState);
 .    public yyException (string message) : base (message) {
 .    }
 .  }
+.  internal class yyUnexpectedEof : yyException {
+.    public yyUnexpectedEof (string message) : base (message) {
+.    }
+.    public yyUnexpectedEof () : base ("") {
+.    }
+.  }
 .
 .  /** must be implemented by a scanner object to supply input to the parser.
 .    */