-yypact[s] = index in yytable of the portion describing state s.
- The lookahead token's type is used to index that portion
- to find out what to do.
-
- If the value in yytable is positive,
- we shift the token and go to that state.
-
- If the value is negative, it is minus a rule number to reduce by.
-
- If the value is zero, the default action from yydefact[s] is used.
-
-yypgoto[i] = the index in yytable of the portion describing
- what to do after reducing a rule that derives variable i + ntokens.
- This portion is indexed by the parser state number, s,
- as of before the text for this nonterminal was read.
- The value from yytable is the state to go to if
- the corresponding value in yycheck is s.
-
-yytable = a vector filled with portions for different uses,
- found via yypact and yypgoto.
-
-yycheck = a vector indexed in parallel with yytable.
- It indicates, in a roundabout way, the bounds of the
- portion you are trying to examine.
-
- Suppose that the portion of yytable starts at index p
- and the index to be examined within the portion is i.
- Then if yycheck[p+i] != i, i is outside the bounds
- of what is actually allocated, and the default
- (from yydefact or yydefgoto) should be used.
- Otherwise, yytable[p+i] should be used.
-
-YYFINAL = the state number of the termination state.
-YYFLAG = most negative short int. Used to flag ??
-YYNTBASE = ntokens.
+ Suppose that the portion of yytable starts at index p
+ and the index to be examined within the portion is i.
+ Then if yycheck[p+i] != i, i is outside the bounds
+ of what is actually allocated, and the default
+ (from yydefact or yydefgoto) should be used.
+ Otherwise, yytable[p+i] should be used.