merge

[henge/webcc.git] / src / apc / lexer_lex.rl

diff --git a/src/apc/lexer_lex.rl b/src/apc/lexer_lex.rl
deleted file mode 100644 (file)
index d87f47d..0000000
--- a/src/apc/lexer_lex.rl
+++ /dev/null
@@ -1,123 +0,0 @@
-/* Ragel State Machine for tokenizing text */
-#include <stdio.h>
-#include <string.h>
-#include <apc/parser.tab.h>
-
-extern void lexer_pushtok(int, YYSTYPE);
-
-int lexer_lex(const char*);
-int ipow(int, int);
-int ttov(const char* str, int);
-uint64_t ttor(const char* str, int);
-char* ttos(const char* str, int);
-
-
-#define MAX_TOK_LEN 64
-#define MAX_TOKENS 16
-#define MAX_STR_SIZE (MAX_TOK_LEN * MAX_TOKENS)
-
-
-%%{
-  machine token_matcher;
-
-  # set up yylval and tok_t to be pushed to stack
-  action set_ref {
-                   tok_t = REF;                      \
-                   yylval.ref = ttor(ts, p-ts);      \
-                   lexer_pushtok(tok_t, yylval);     \
-                   num_tokens++; }
-
-  action set_val { tok_t = NUM;                      \
-                   yylval.val = ttov(ts, p-ts);      \
-                   lexer_pushtok(tok_t, yylval);     \
-                   num_tokens++; }
-
-  action set_name { tok_t = NAME;                    \
-                    yylval.str = ttos(ts, p-ts);     \
-                    lexer_pushtok(tok_t, yylval);    \
-                    num_tokens++; }
-
-  action set_ts   { ts = p; }
-
-  # instantiate machines for each possible token
-  ref = '0x' xdigit+ %set_ref;
-  val = digit+ %set_val;
-  name = alpha+ %set_name;
-  tok = ref | val | name;
-  segment = (tok . '_') %set_ts;
-
-  main := segment* . tok;
-}%%
-
-
-%%write data;
-
-/* Scan filename and push the its tokens
-   onto the stack */
-int lexer_lex (const char* str)
-{
-  const char *p, *pe, *ts, *eof;
-  int  cs, tok_t, num_tokens; //tok_t == token type
-
-  num_tokens = 0;
-
-  p = ts = str;
-  pe = p + strlen(str) + 1;
-  %%write init;
-  %%write exec;
-
-
-  printf (str);
-  return num_tokens;
-}
-
-int ipow(int base, int exp)
-{
-  int result = 1;
-  while (exp)
-    {
-      if (exp & 1)
-        result = result * base;
-      exp = exp >> 1;
-      base *= base;
-    }
-
-  return result;
-}
-
-/*  Token to Value */
-int ttov(const char* str, int len)
-{
-  int i, val = 0;
-
-  for (i = 0; i < len; i++)
-    {
-      val += ((str[len - (i + 1)] - '0') * ipow(10,i));
-    }
-
-  return val;
-}
-
-uint64_t ttor(const char* str, int len)
-{
-  int i;
-  uint64_t num = 0;
-
-  for (i = 0; i < len; i++)
-    {
-      num += ((str[len - (i + 1)] - '0') * ipow(10,i));
-    }
-
-  return num;
-}
-
-char* ttos(const char* str, int len)
-{
-  int i;
-  char token_buf[MAX_TOK_LEN];
-
-  memmove(token_buf, str, len);
-  token_buf[len+1] = '\0';
-
-  return strdup(token_buf);
-}