interpreter/preprocessor/faust-0.9.47mr3/compiler/headers/patternmatcher.hh

   1
   2 #ifndef __PATTERNMATCHER__
   3 #define __PATTERNMATCHER__
   4
   5 using namespace std;
   6 #include <vector>
   7 #include "tlib.hh"
   8
   9 struct Automaton;
  10
  11 /* Create a pattern matching automaton from the given list of rules. */
  12
  13 Automaton *make_pattern_matcher(Tree R);
  14
  15 /* Apply the pattern matcher to a single argument, starting from a given state
  16    s. Returns the resulting state, modifies the variable bindings E
  17    accordingly, and sets C to the resulting closure if a final state is
  18    reached. Result will be -1 to indicate a matching failure, and C will be
  19    set to nil if no final state has been reached yet. */
  20
  21 int apply_pattern_matcher(Automaton *A,         // automaton
  22                           int s,                // start state
  23                           Tree X,               // arg to be matched
  24                           Tree& C,              // output closure (if any)
  25                           vector<Tree>& E);     // modified output environments
  26
  27 #endif