[llvm-commits] CVS: llvm/utils/TableGen/FileLexer.cpp.cvs FileLexer.l.cvs FileLexer.l FileLexer.cpp
Chris Lattner
lattner at cs.uiuc.edu
Mon Feb 13 21:13:25 PST 2006
Changes in directory llvm/utils/TableGen:
FileLexer.cpp.cvs added (r1.1)
FileLexer.l.cvs added (r1.1)
FileLexer.l updated: 1.25 -> 1.26
FileLexer.cpp (r1.4) removed
---
Log message:
Adjust to new form of handling lexer dependencies, this way shouldn't have
the problems the old way did.
---
Diffs of the changes: (+2169 -0)
FileLexer.cpp.cvs | 1941 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
FileLexer.l | 1
FileLexer.l.cvs | 227 ++++++
3 files changed, 2169 insertions(+)
Index: llvm/utils/TableGen/FileLexer.cpp.cvs
diff -c /dev/null llvm/utils/TableGen/FileLexer.cpp.cvs:1.1
*** /dev/null Mon Feb 13 23:13:23 2006
--- llvm/utils/TableGen/FileLexer.cpp.cvs Mon Feb 13 23:13:13 2006
***************
*** 0 ****
--- 1,1941 ----
+ #define yy_create_buffer File_create_buffer
+ #define yy_delete_buffer File_delete_buffer
+ #define yy_scan_buffer File_scan_buffer
+ #define yy_scan_string File_scan_string
+ #define yy_scan_bytes File_scan_bytes
+ #define yy_flex_debug File_flex_debug
+ #define yy_init_buffer File_init_buffer
+ #define yy_flush_buffer File_flush_buffer
+ #define yy_load_buffer_state File_load_buffer_state
+ #define yy_switch_to_buffer File_switch_to_buffer
+ #define yyin Filein
+ #define yyleng Fileleng
+ #define yylex Filelex
+ #define yyout Fileout
+ #define yyrestart Filerestart
+ #define yytext Filetext
+ #define yylineno Filelineno
+ #define yywrap Filewrap
+
+ #line 21 "Lexer.cpp"
+ /* A lexical scanner generated by flex */
+
+ /* Scanner skeleton version:
+ * $Header: /home/vadve/shared/PublicCVS/llvm/utils/TableGen/FileLexer.cpp.cvs,v 1.1 2006/02/14 05:13:13 lattner Exp $
+ */
+
+ #define FLEX_SCANNER
+ #define YY_FLEX_MAJOR_VERSION 2
+ #define YY_FLEX_MINOR_VERSION 5
+
+ #include <stdio.h>
+
+
+ /* cfront 1.2 defines "c_plusplus" instead of "__cplusplus" */
+ #ifdef c_plusplus
+ #ifndef __cplusplus
+ #define __cplusplus
+ #endif
+ #endif
+
+
+ #ifdef __cplusplus
+
+ #include <stdlib.h>
+ #include <unistd.h>
+
+ /* Use prototypes in function declarations. */
+ #define YY_USE_PROTOS
+
+ /* The "const" storage-class-modifier is valid. */
+ #define YY_USE_CONST
+
+ #else /* ! __cplusplus */
+
+ #if __STDC__
+
+ #define YY_USE_PROTOS
+ #define YY_USE_CONST
+
+ #endif /* __STDC__ */
+ #endif /* ! __cplusplus */
+
+ #ifdef __TURBOC__
+ #pragma warn -rch
+ #pragma warn -use
+ #include <io.h>
+ #include <stdlib.h>
+ #define YY_USE_CONST
+ #define YY_USE_PROTOS
+ #endif
+
+ #ifdef YY_USE_CONST
+ #define yyconst const
+ #else
+ #define yyconst
+ #endif
+
+
+ #ifdef YY_USE_PROTOS
+ #define YY_PROTO(proto) proto
+ #else
+ #define YY_PROTO(proto) ()
+ #endif
+
+ /* Returned upon end-of-file. */
+ #define YY_NULL 0
+
+ /* Promotes a possibly negative, possibly signed char to an unsigned
+ * integer for use as an array index. If the signed char is negative,
+ * we want to instead treat it as an 8-bit unsigned char, hence the
+ * double cast.
+ */
+ #define YY_SC_TO_UI(c) ((unsigned int) (unsigned char) c)
+
+ /* Enter a start condition. This macro really ought to take a parameter,
+ * but we do it the disgusting crufty way forced on us by the ()-less
+ * definition of BEGIN.
+ */
+ #define BEGIN yy_start = 1 + 2 *
+
+ /* Translate the current start state into a value that can be later handed
+ * to BEGIN to return to the state. The YYSTATE alias is for lex
+ * compatibility.
+ */
+ #define YY_START ((yy_start - 1) / 2)
+ #define YYSTATE YY_START
+
+ /* Action number for EOF rule of a given start state. */
+ #define YY_STATE_EOF(state) (YY_END_OF_BUFFER + state + 1)
+
+ /* Special action meaning "start processing a new file". */
+ #define YY_NEW_FILE yyrestart( yyin )
+
+ #define YY_END_OF_BUFFER_CHAR 0
+
+ /* Size of default input buffer. */
+ #define YY_BUF_SIZE (16384*64)
+
+ typedef struct yy_buffer_state *YY_BUFFER_STATE;
+
+ extern int yyleng;
+ extern FILE *yyin, *yyout;
+
+ #define EOB_ACT_CONTINUE_SCAN 0
+ #define EOB_ACT_END_OF_FILE 1
+ #define EOB_ACT_LAST_MATCH 2
+
+ /* The funky do-while in the following #define is used to turn the definition
+ * int a single C statement (which needs a semi-colon terminator). This
+ * avoids problems with code like:
+ *
+ * if ( condition_holds )
+ * yyless( 5 );
+ * else
+ * do_something_else();
+ *
+ * Prior to using the do-while the compiler would get upset at the
+ * "else" because it interpreted the "if" statement as being all
+ * done when it reached the ';' after the yyless() call.
+ */
+
+ /* Return all but the first 'n' matched characters back to the input stream. */
+
+ #define yyless(n) \
+ do \
+ { \
+ /* Undo effects of setting up yytext. */ \
+ *yy_cp = yy_hold_char; \
+ YY_RESTORE_YY_MORE_OFFSET \
+ yy_c_buf_p = yy_cp = yy_bp + n - YY_MORE_ADJ; \
+ YY_DO_BEFORE_ACTION; /* set up yytext again */ \
+ } \
+ while ( 0 )
+
+ #define unput(c) yyunput( c, yytext_ptr )
+
+ /* The following is because we cannot portably get our hands on size_t
+ * (without autoconf's help, which isn't available because we want
+ * flex-generated scanners to compile on their own).
+ */
+ typedef unsigned int yy_size_t;
+
+
+ struct yy_buffer_state
+ {
+ FILE *yy_input_file;
+
+ char *yy_ch_buf; /* input buffer */
+ char *yy_buf_pos; /* current position in input buffer */
+
+ /* Size of input buffer in bytes, not including room for EOB
+ * characters.
+ */
+ yy_size_t yy_buf_size;
+
+ /* Number of characters read into yy_ch_buf, not including EOB
+ * characters.
+ */
+ int yy_n_chars;
+
+ /* Whether we "own" the buffer - i.e., we know we created it,
+ * and can realloc() it to grow it, and should free() it to
+ * delete it.
+ */
+ int yy_is_our_buffer;
+
+ /* Whether this is an "interactive" input source; if so, and
+ * if we're using stdio for input, then we want to use getc()
+ * instead of fread(), to make sure we stop fetching input after
+ * each newline.
+ */
+ int yy_is_interactive;
+
+ /* Whether we're considered to be at the beginning of a line.
+ * If so, '^' rules will be active on the next match, otherwise
+ * not.
+ */
+ int yy_at_bol;
+
+ /* Whether to try to fill the input buffer when we reach the
+ * end of it.
+ */
+ int yy_fill_buffer;
+
+ int yy_buffer_status;
+ #define YY_BUFFER_NEW 0
+ #define YY_BUFFER_NORMAL 1
+ /* When an EOF's been seen but there's still some text to process
+ * then we mark the buffer as YY_EOF_PENDING, to indicate that we
+ * shouldn't try reading from the input source any more. We might
+ * still have a bunch of tokens to match, though, because of
+ * possible backing-up.
+ *
+ * When we actually see the EOF, we change the status to "new"
+ * (via yyrestart()), so that the user can continue scanning by
+ * just pointing yyin at a new input file.
+ */
+ #define YY_BUFFER_EOF_PENDING 2
+ };
+
+ static YY_BUFFER_STATE yy_current_buffer = 0;
+
+ /* We provide macros for accessing buffer states in case in the
+ * future we want to put the buffer states in a more general
+ * "scanner state".
+ */
+ #define YY_CURRENT_BUFFER yy_current_buffer
+
+
+ /* yy_hold_char holds the character lost when yytext is formed. */
+ static char yy_hold_char;
+
+ static int yy_n_chars; /* number of characters read into yy_ch_buf */
+
+
+ int yyleng;
+
+ /* Points to current character in buffer. */
+ static char *yy_c_buf_p = (char *) 0;
+ static int yy_init = 1; /* whether we need to initialize */
+ static int yy_start = 0; /* start state number */
+
+ /* Flag which is used to allow yywrap()'s to do buffer switches
+ * instead of setting up a fresh yyin. A bit of a hack ...
+ */
+ static int yy_did_buffer_switch_on_eof;
+
+ void yyrestart YY_PROTO(( FILE *input_file ));
+
+ void yy_switch_to_buffer YY_PROTO(( YY_BUFFER_STATE new_buffer ));
+ void yy_load_buffer_state YY_PROTO(( void ));
+ YY_BUFFER_STATE yy_create_buffer YY_PROTO(( FILE *file, int size ));
+ void yy_delete_buffer YY_PROTO(( YY_BUFFER_STATE b ));
+ void yy_init_buffer YY_PROTO(( YY_BUFFER_STATE b, FILE *file ));
+ void yy_flush_buffer YY_PROTO(( YY_BUFFER_STATE b ));
+ #define YY_FLUSH_BUFFER yy_flush_buffer( yy_current_buffer )
+
+ YY_BUFFER_STATE yy_scan_buffer YY_PROTO(( char *base, yy_size_t size ));
+ YY_BUFFER_STATE yy_scan_string YY_PROTO(( yyconst char *yy_str ));
+ YY_BUFFER_STATE yy_scan_bytes YY_PROTO(( yyconst char *bytes, int len ));
+
+ static void *yy_flex_alloc YY_PROTO(( yy_size_t ));
+ static inline void *yy_flex_realloc YY_PROTO(( void *, yy_size_t ));
+ static void yy_flex_free YY_PROTO(( void * ));
+
+ #define yy_new_buffer yy_create_buffer
+
+ #define yy_set_interactive(is_interactive) \
+ { \
+ if ( ! yy_current_buffer ) \
+ yy_current_buffer = yy_create_buffer( yyin, YY_BUF_SIZE ); \
+ yy_current_buffer->yy_is_interactive = is_interactive; \
+ }
+
+ #define yy_set_bol(at_bol) \
+ { \
+ if ( ! yy_current_buffer ) \
+ yy_current_buffer = yy_create_buffer( yyin, YY_BUF_SIZE ); \
+ yy_current_buffer->yy_at_bol = at_bol; \
+ }
+
+ #define YY_AT_BOL() (yy_current_buffer->yy_at_bol)
+
+
+ #define YY_USES_REJECT
+ typedef unsigned char YY_CHAR;
+ FILE *yyin = (FILE *) 0, *yyout = (FILE *) 0;
+ typedef int yy_state_type;
+ extern int yylineno;
+ int yylineno = 1;
+ extern char *yytext;
+ #define yytext_ptr yytext
+
+ static yy_state_type yy_get_previous_state YY_PROTO(( void ));
+ static yy_state_type yy_try_NUL_trans YY_PROTO(( yy_state_type current_state ));
+ static int yy_get_next_buffer YY_PROTO(( void ));
+ static void yy_fatal_error YY_PROTO(( yyconst char msg[] ));
+
+ /* Done after the current pattern has been matched and before the
+ * corresponding action - sets up yytext.
+ */
+ #define YY_DO_BEFORE_ACTION \
+ yytext_ptr = yy_bp; \
+ yyleng = (int) (yy_cp - yy_bp); \
+ yy_hold_char = *yy_cp; \
+ *yy_cp = '\0'; \
+ yy_c_buf_p = yy_cp;
+
+ #define YY_NUM_RULES 31
+ #define YY_END_OF_BUFFER 32
+ static yyconst short int yy_acclist[129] =
+ { 0,
+ 25, 25, 32, 30, 31, 23, 30, 31, 23, 31,
+ 30, 31, 30, 31, 30, 31, 30, 31, 30, 31,
+ 22, 30, 31, 22, 30, 31, 19, 30, 31, 30,
+ 31, 19, 30, 31, 19, 30, 31, 19, 30, 31,
+ 19, 30, 31, 19, 30, 31, 19, 30, 31, 19,
+ 30, 31, 25, 31, 26, 31, 28, 31, 23, 21,
+ 20, 22, 24, 1, 19, 19, 19, 19, 19, 19,
+ 19, 15, 19, 19, 19, 19, 25, 26, 26, 29,
+ 28, 27, 28, 20, 1, 22, 22, 5, 19, 19,
+ 19, 10, 19, 12, 19, 19, 19, 4, 19, 14,
+
+ 19, 19, 19, 18, 16, 17, 3, 6, 19, 19,
+ 9, 19, 19, 19, 8, 19, 19, 11, 19, 13,
+ 19, 19, 19, 19, 7, 19, 19, 2
+ } ;
+
+ static yyconst short int yy_accept[101] =
+ { 0,
+ 1, 1, 1, 2, 3, 4, 6, 9, 11, 13,
+ 15, 17, 19, 21, 24, 27, 30, 32, 35, 38,
+ 41, 44, 47, 50, 53, 55, 57, 59, 60, 60,
+ 60, 61, 62, 63, 64, 65, 65, 65, 66, 66,
+ 67, 68, 69, 70, 71, 72, 74, 75, 76, 77,
+ 78, 79, 80, 81, 82, 83, 84, 84, 84, 85,
+ 86, 87, 88, 88, 88, 90, 91, 92, 94, 96,
+ 97, 98, 100, 102, 103, 104, 105, 106, 107, 107,
+ 108, 110, 111, 113, 114, 115, 117, 118, 120, 122,
+ 123, 124, 125, 127, 128, 128, 128, 128, 129, 129
+
+ } ;
+
+ static yyconst int yy_ec[256] =
+ { 0,
+ 1, 1, 1, 1, 1, 1, 1, 1, 2, 3,
+ 1, 1, 4, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 2, 5, 6, 1, 7, 1, 1, 1, 1,
+ 1, 8, 9, 1, 9, 1, 10, 11, 12, 13,
+ 13, 13, 13, 13, 13, 13, 13, 1, 1, 1,
+ 1, 1, 1, 1, 14, 14, 14, 14, 14, 14,
+ 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
+ 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
+ 16, 1, 17, 1, 15, 1, 18, 19, 20, 21,
+
+ 22, 23, 24, 25, 26, 15, 15, 27, 15, 28,
+ 29, 15, 15, 30, 31, 32, 33, 15, 15, 34,
+ 15, 15, 35, 1, 36, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1
+ } ;
+
+ static yyconst int yy_meta[37] =
+ { 0,
+ 1, 1, 2, 1, 1, 1, 1, 3, 1, 3,
+ 4, 4, 4, 5, 6, 1, 1, 5, 5, 5,
+ 5, 5, 5, 6, 6, 6, 6, 6, 6, 6,
+ 6, 6, 6, 6, 1, 1
+ } ;
+
+ static yyconst short int yy_base[113] =
+ { 0,
+ 0, 0, 29, 30, 199, 200, 39, 42, 167, 191,
+ 0, 36, 42, 42, 45, 0, 161, 169, 33, 41,
+ 168, 165, 42, 160, 0, 57, 61, 70, 45, 185,
+ 200, 0, 66, 200, 0, 69, 0, 0, 154, 157,
+ 170, 166, 162, 162, 162, 62, 151, 151, 151, 0,
+ 75, 76, 200, 79, 200, 80, 153, 73, 0, 0,
+ 81, 0, 143, 161, 146, 145, 153, 0, 0, 147,
+ 146, 0, 0, 140, 145, 200, 200, 200, 134, 200,
+ 0, 138, 0, 147, 134, 0, 138, 0, 0, 120,
+ 97, 77, 0, 93, 95, 60, 45, 200, 200, 101,
+
+ 107, 109, 112, 118, 124, 130, 133, 139, 142, 147,
+ 153, 159
+ } ;
+
+ static yyconst short int yy_def[113] =
+ { 0,
+ 99, 1, 100, 100, 99, 99, 99, 99, 99, 101,
+ 102, 99, 99, 99, 99, 103, 99, 103, 103, 103,
+ 103, 103, 103, 103, 104, 105, 106, 99, 99, 101,
+ 99, 107, 99, 99, 108, 99, 109, 103, 110, 103,
+ 103, 103, 103, 103, 103, 103, 103, 103, 103, 104,
+ 105, 105, 99, 106, 99, 106, 99, 99, 107, 108,
+ 99, 109, 110, 111, 103, 103, 103, 103, 103, 103,
+ 103, 103, 103, 103, 103, 99, 99, 99, 110, 99,
+ 103, 103, 103, 103, 103, 103, 103, 103, 103, 103,
+ 103, 103, 103, 103, 99, 112, 112, 99, 0, 99,
+
+ 99, 99, 99, 99, 99, 99, 99, 99, 99, 99,
+ 99, 99
+ } ;
+
+ static yyconst short int yy_nxt[237] =
+ { 0,
+ 6, 7, 8, 7, 9, 10, 11, 6, 12, 13,
+ 14, 15, 15, 16, 16, 17, 6, 16, 18, 19,
+ 20, 16, 21, 16, 16, 22, 23, 16, 16, 16,
+ 24, 16, 16, 16, 6, 6, 26, 26, 27, 27,
+ 28, 28, 28, 28, 28, 28, 33, 33, 33, 34,
+ 98, 35, 33, 33, 33, 33, 33, 33, 43, 41,
+ 36, 42, 44, 47, 52, 98, 53, 48, 55, 57,
+ 56, 28, 28, 28, 58, 37, 33, 33, 33, 61,
+ 61, 71, 99, 52, 99, 53, 99, 99, 99, 56,
+ 77, 61, 61, 72, 95, 95, 95, 95, 94, 78,
+
+ 96, 25, 25, 25, 25, 25, 25, 30, 30, 30,
+ 30, 30, 30, 32, 32, 38, 38, 38, 50, 50,
+ 93, 50, 50, 50, 51, 51, 51, 51, 51, 51,
+ 54, 54, 54, 54, 54, 54, 59, 59, 59, 60,
+ 92, 60, 60, 60, 60, 62, 62, 63, 63, 63,
+ 63, 63, 63, 79, 79, 79, 79, 79, 79, 97,
+ 97, 97, 97, 97, 97, 91, 90, 89, 88, 64,
+ 87, 86, 85, 84, 83, 82, 81, 80, 64, 76,
+ 75, 74, 73, 70, 69, 68, 67, 66, 65, 64,
+ 31, 49, 46, 45, 40, 39, 31, 29, 99, 5,
+
+ 99, 99, 99, 99, 99, 99, 99, 99, 99, 99,
+ 99, 99, 99, 99, 99, 99, 99, 99, 99, 99,
+ 99, 99, 99, 99, 99, 99, 99, 99, 99, 99,
+ 99, 99, 99, 99, 99, 99
+ } ;
+
+ static yyconst short int yy_chk[237] =
+ { 0,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 3, 4, 3, 4,
+ 7, 7, 7, 8, 8, 8, 12, 12, 12, 13,
+ 97, 13, 14, 14, 14, 15, 15, 15, 20, 19,
+ 14, 19, 20, 23, 26, 96, 26, 23, 27, 29,
+ 27, 28, 28, 28, 29, 14, 33, 33, 33, 36,
+ 36, 46, 51, 52, 51, 52, 54, 56, 54, 56,
+ 58, 61, 61, 46, 94, 94, 95, 95, 92, 58,
+
+ 95, 100, 100, 100, 100, 100, 100, 101, 101, 101,
+ 101, 101, 101, 102, 102, 103, 103, 103, 104, 104,
+ 91, 104, 104, 104, 105, 105, 105, 105, 105, 105,
+ 106, 106, 106, 106, 106, 106, 107, 107, 107, 108,
+ 90, 108, 108, 108, 108, 109, 109, 110, 110, 110,
+ 110, 110, 110, 111, 111, 111, 111, 111, 111, 112,
+ 112, 112, 112, 112, 112, 87, 85, 84, 82, 79,
+ 75, 74, 71, 70, 67, 66, 65, 64, 63, 57,
+ 49, 48, 47, 45, 44, 43, 42, 41, 40, 39,
+ 30, 24, 22, 21, 18, 17, 10, 9, 5, 99,
+
+ 99, 99, 99, 99, 99, 99, 99, 99, 99, 99,
+ 99, 99, 99, 99, 99, 99, 99, 99, 99, 99,
+ 99, 99, 99, 99, 99, 99, 99, 99, 99, 99,
+ 99, 99, 99, 99, 99, 99
+ } ;
+
+ static yy_state_type yy_state_buf[YY_BUF_SIZE + 2], *yy_state_ptr;
+ static char *yy_full_match;
+ static int yy_lp;
+ #define REJECT \
+ { \
+ *yy_cp = yy_hold_char; /* undo effects of setting up yytext */ \
+ yy_cp = yy_full_match; /* restore poss. backed-over text */ \
+ ++yy_lp; \
+ goto find_rule; \
+ }
+ #define yymore() yymore_used_but_not_detected
+ #define YY_MORE_ADJ 0
+ #define YY_RESTORE_YY_MORE_OFFSET
+ char *yytext;
+ #line 1 "/Users/sabre/cvs/llvm/utils/TableGen/FileLexer.l"
+ #define INITIAL 0
+ /*===-- FileLexer.l - Scanner for TableGen Files ----------------*- C++ -*-===//
+ //
+ // The LLVM Compiler Infrastructure
+ //
+ // This file was developed by the LLVM research group and is distributed under
+ // the University of Illinois Open Source License. See LICENSE.TXT for details.
+ //
+ //===----------------------------------------------------------------------===//
+ //
+ // This file defines a simple flex scanner for TableGen files. This is pretty
+ // straight-forward, except for the magic to handle file inclusion.
+ //
+ //===----------------------------------------------------------------------===*/
+ #define YY_NEVER_INTERACTIVE 1
+ #define comment 1
+
+ #line 30 "/Users/sabre/cvs/llvm/utils/TableGen/FileLexer.l"
+ #include "Record.h"
+ typedef std::pair<llvm::Record*, std::vector<llvm::Init*>*> SubClassRefTy;
+ #include "FileParser.h"
+
+ int Fileparse();
+
+ namespace llvm {
+
+ // Global variable recording the location of the include directory
+ std::string IncludeDirectory;
+
+ /// ParseInt - This has to handle the special case of binary numbers 0b0101
+ ///
+ static int ParseInt(const char *Str) {
+ if (Str[0] == '0' && Str[1] == 'b')
+ return strtol(Str+2, 0, 2);
+ return strtol(Str, 0, 0);
+ }
+
+ static int CommentDepth = 0;
+
+ struct IncludeRec {
+ std::string Filename;
+ FILE *File;
+ unsigned LineNo;
+ YY_BUFFER_STATE Buffer;
+
+ IncludeRec(const std::string &FN, FILE *F)
+ : Filename(FN), File(F), LineNo(0){
+ }
+ };
+
+ static std::vector<IncludeRec> IncludeStack;
+
+ std::ostream &err() {
+ if (IncludeStack.empty())
+ return std::cerr << "At end of input: ";
+
+ for (unsigned i = 0, e = IncludeStack.size()-1; i != e; ++i)
+ std::cerr << "Included from " << IncludeStack[i].Filename << ":"
+ << IncludeStack[i].LineNo << ":\n";
+ return std::cerr << "Parsing " << IncludeStack.back().Filename << ":"
+ << Filelineno << ": ";
+ }
+
+ /// ParseFile - this function begins the parsing of the specified tablegen file.
+ ///
+ void ParseFile(const std::string &Filename, const std::string & IncludeDir) {
+ FILE *F = stdin;
+ if (Filename != "-") {
+ F = fopen(Filename.c_str(), "r");
+
+ if (F == 0) {
+ std::cerr << "Could not open input file '" + Filename + "'!\n";
+ exit (1);
+ }
+ IncludeStack.push_back(IncludeRec(Filename, F));
+ } else {
+ IncludeStack.push_back(IncludeRec("<stdin>", stdin));
+ }
+
+ // Record the location of the include directory so that the lexer can find
+ // it later.
+ IncludeDirectory = IncludeDir;
+
+ Filein = F;
+ Filelineno = 1;
+ Fileparse();
+ Filein = stdin;
+ }
+
+ /// HandleInclude - This function is called when an include directive is
+ /// encountered in the input stream...
+ ///
+ static void HandleInclude(const char *Buffer) {
+ unsigned Length = yyleng;
+ assert(Buffer[Length-1] == '"');
+ Buffer += strlen("include ");
+ Length -= strlen("include ");
+ while (*Buffer != '"') {
+ ++Buffer;
+ --Length;
+ }
+ assert(Length >= 2 && "Double quotes not found?");
+ std::string Filename(Buffer+1, Buffer+Length-1);
+ //std::cerr << "Filename = '" << Filename << "'\n";
+
+ // Save the line number and lex buffer of the includer...
+ IncludeStack.back().LineNo = Filelineno;
+ IncludeStack.back().Buffer = YY_CURRENT_BUFFER;
+
+ // Open the new input file...
+ yyin = fopen(Filename.c_str(), "r");
+ if (yyin == 0) {
+ // If we couldn't find the file in the current directory, look for it in
+ // the include directories.
+ //
+ // NOTE: Right now, there is only one directory. We need to eventually add
+ // support for more.
+ std::string NextFilename = IncludeDirectory + "/" + Filename;
+ yyin = fopen(NextFilename.c_str(), "r");
+ if (yyin == 0) {
+ err() << "Could not find include file '" << Filename << "'!\n";
+ exit(1);
+ }
+ Filename = NextFilename;
+ }
+
+ // Add the file to our include stack...
+ IncludeStack.push_back(IncludeRec(Filename, yyin));
+ Filelineno = 1; // Reset line numbering...
+ //yyrestart(yyin); // Start lexing the new file...
+
+ yy_switch_to_buffer(yy_create_buffer(yyin, YY_BUF_SIZE));
+ }
+
+ /// yywrap - This is called when the lexer runs out of input in one of the
+ /// files. Switch back to an includer if an includee has run out of input.
+ ///
+ extern "C"
+ int yywrap(void) {
+ if (IncludeStack.back().File != stdin)
+ fclose(IncludeStack.back().File);
+ IncludeStack.pop_back();
+ if (IncludeStack.empty()) return 1; // Top-level file is done.
+
+ // Otherwise, we need to switch back to a file which included the current one.
+ Filelineno = IncludeStack.back().LineNo; // Restore current line number
+ yy_switch_to_buffer(IncludeStack.back().Buffer);
+ return 0;
+ }
+
+ } // End llvm namespace
+
+ using namespace llvm;
+
+ #line 648 "Lexer.cpp"
+
+ /* Macros after this point can all be overridden by user definitions in
+ * section 1.
+ */
+
+ #ifndef YY_SKIP_YYWRAP
+ #ifdef __cplusplus
+ extern "C" int yywrap YY_PROTO(( void ));
+ #else
+ extern int yywrap YY_PROTO(( void ));
+ #endif
+ #endif
+
+ #ifndef YY_NO_UNPUT
+ static inline void yyunput YY_PROTO(( int c, char *buf_ptr ));
+ #endif
+
+ #ifndef yytext_ptr
+ static void yy_flex_strncpy YY_PROTO(( char *, yyconst char *, int ));
+ #endif
+
+ #ifdef YY_NEED_STRLEN
+ static int yy_flex_strlen YY_PROTO(( yyconst char * ));
+ #endif
+
+ #ifndef YY_NO_INPUT
+ #ifdef __cplusplus
+ static int yyinput YY_PROTO(( void ));
+ #else
+ static int input YY_PROTO(( void ));
+ #endif
+ #endif
+
+ #if YY_STACK_USED
+ static int yy_start_stack_ptr = 0;
+ static int yy_start_stack_depth = 0;
+ static int *yy_start_stack = 0;
+ #ifndef YY_NO_PUSH_STATE
+ static void yy_push_state YY_PROTO(( int new_state ));
+ #endif
+ #ifndef YY_NO_POP_STATE
+ static void yy_pop_state YY_PROTO(( void ));
+ #endif
+ #ifndef YY_NO_TOP_STATE
+ static int yy_top_state YY_PROTO(( void ));
+ #endif
+
+ #else
+ #define YY_NO_PUSH_STATE 1
+ #define YY_NO_POP_STATE 1
+ #define YY_NO_TOP_STATE 1
+ #endif
+
+ #ifdef YY_MALLOC_DECL
+ YY_MALLOC_DECL
+ #else
+ #if __STDC__
+ #ifndef __cplusplus
+ #include <stdlib.h>
+ #endif
+ #else
+ /* Just try to get by without declaring the routines. This will fail
+ * miserably on non-ANSI systems for which sizeof(size_t) != sizeof(int)
+ * or sizeof(void*) != sizeof(int).
+ */
+ #endif
+ #endif
+
+ /* Amount of stuff to slurp up with each read. */
+ #ifndef YY_READ_BUF_SIZE
+ #define YY_READ_BUF_SIZE 8192
+ #endif
+
+ /* Copy whatever the last rule matched to the standard output. */
+
+ #ifndef ECHO
+ /* This used to be an fputs(), but since the string might contain NUL's,
+ * we now use fwrite().
+ */
+ #define ECHO (void) fwrite( yytext, yyleng, 1, yyout )
+ #endif
+
+ /* Gets input and stuffs it into "buf". number of characters read, or YY_NULL,
+ * is returned in "result".
+ */
+ #ifndef YY_INPUT
+ #define YY_INPUT(buf,result,max_size) \
+ if ( yy_current_buffer->yy_is_interactive ) \
+ { \
+ int c = '*', n; \
+ for ( n = 0; n < max_size && \
+ (c = getc( yyin )) != EOF && c != '\n'; ++n ) \
+ buf[n] = (char) c; \
+ if ( c == '\n' ) \
+ buf[n++] = (char) c; \
+ if ( c == EOF && ferror( yyin ) ) \
+ YY_FATAL_ERROR( "input in flex scanner failed" ); \
+ result = n; \
+ } \
+ else if ( ((result = fread( buf, 1, max_size, yyin )) == 0) \
+ && ferror( yyin ) ) \
+ YY_FATAL_ERROR( "input in flex scanner failed" );
+ #endif
+
+ /* No semi-colon after return; correct usage is to write "yyterminate();" -
+ * we don't want an extra ';' after the "return" because that will cause
+ * some compilers to complain about unreachable statements.
+ */
+ #ifndef yyterminate
+ #define yyterminate() return YY_NULL
+ #endif
+
+ /* Number of entries by which start-condition stack grows. */
+ #ifndef YY_START_STACK_INCR
+ #define YY_START_STACK_INCR 25
+ #endif
+
+ /* Report a fatal error. */
+ #ifndef YY_FATAL_ERROR
+ #define YY_FATAL_ERROR(msg) yy_fatal_error( msg )
+ #endif
+
+ /* Default declaration of generated scanner - a define so the user can
+ * easily add parameters.
+ */
+ #ifndef YY_DECL
+ #define YY_DECL int yylex YY_PROTO(( void ))
+ #endif
+
+ /* Code executed at the beginning of each rule, after yytext and yyleng
+ * have been set up.
+ */
+ #ifndef YY_USER_ACTION
+ #define YY_USER_ACTION
+ #endif
+
+ /* Code executed at the end of each rule. */
+ #ifndef YY_BREAK
+ #define YY_BREAK break;
+ #endif
+
+ #define YY_RULE_SETUP \
+ YY_USER_ACTION
+
+ YY_DECL
+ {
+ register yy_state_type yy_current_state;
+ register char *yy_cp, *yy_bp;
+ register int yy_act;
+
+ #line 176 "/Users/sabre/cvs/llvm/utils/TableGen/FileLexer.l"
+
+
+ #line 802 "Lexer.cpp"
+
+ if ( yy_init )
+ {
+ yy_init = 0;
+
+ #ifdef YY_USER_INIT
+ YY_USER_INIT;
+ #endif
+
+ if ( ! yy_start )
+ yy_start = 1; /* first start state */
+
+ if ( ! yyin )
+ yyin = stdin;
+
+ if ( ! yyout )
+ yyout = stdout;
+
+ if ( ! yy_current_buffer )
+ yy_current_buffer =
+ yy_create_buffer( yyin, YY_BUF_SIZE );
+
+ yy_load_buffer_state();
+ }
+
+ while ( 1 ) /* loops until end-of-file is reached */
+ {
+ yy_cp = yy_c_buf_p;
+
+ /* Support of yytext. */
+ *yy_cp = yy_hold_char;
+
+ /* yy_bp points to the position in yy_ch_buf of the start of
+ * the current run.
+ */
+ yy_bp = yy_cp;
+
+ yy_current_state = yy_start;
+ yy_state_ptr = yy_state_buf;
+ *yy_state_ptr++ = yy_current_state;
+ yy_match:
+ do
+ {
+ register YY_CHAR yy_c = yy_ec[YY_SC_TO_UI(*yy_cp)];
+ while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
+ {
+ yy_current_state = (int) yy_def[yy_current_state];
+ if ( yy_current_state >= 100 )
+ yy_c = yy_meta[(unsigned int) yy_c];
+ }
+ yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
+ *yy_state_ptr++ = yy_current_state;
+ ++yy_cp;
+ }
+ while ( yy_current_state != 99 );
+
+ yy_find_action:
+ yy_current_state = *--yy_state_ptr;
+ yy_lp = yy_accept[yy_current_state];
+ find_rule: /* we branch to this label when backing up */
+ for ( ; ; ) /* until we find what rule we matched */
+ {
+ if ( yy_lp && yy_lp < yy_accept[yy_current_state + 1] )
+ {
+ yy_act = yy_acclist[yy_lp];
+ {
+ yy_full_match = yy_cp;
+ break;
+ }
+ }
+ --yy_cp;
+ yy_current_state = *--yy_state_ptr;
+ yy_lp = yy_accept[yy_current_state];
+ }
+
+ YY_DO_BEFORE_ACTION;
+
+ if ( yy_act != YY_END_OF_BUFFER )
+ {
+ int yyl;
+ for ( yyl = 0; yyl < yyleng; ++yyl )
+ if ( yytext[yyl] == '\n' )
+ ++yylineno;
+ }
+
+ do_action: /* This label is used only to access EOF actions. */
+
+
+ switch ( yy_act )
+ { /* beginning of action switch */
+ case 1:
+ YY_RULE_SETUP
+ #line 178 "/Users/sabre/cvs/llvm/utils/TableGen/FileLexer.l"
+ { /* Ignore comments */ }
+ YY_BREAK
+ case 2:
+ YY_RULE_SETUP
+ #line 180 "/Users/sabre/cvs/llvm/utils/TableGen/FileLexer.l"
+ { HandleInclude(yytext); }
+ YY_BREAK
+ case 3:
+ YY_RULE_SETUP
+ #line 181 "/Users/sabre/cvs/llvm/utils/TableGen/FileLexer.l"
+ { Filelval.StrVal = new std::string(yytext+2, yytext+yyleng-2);
+ return CODEFRAGMENT; }
+ YY_BREAK
+ case 4:
+ YY_RULE_SETUP
+ #line 184 "/Users/sabre/cvs/llvm/utils/TableGen/FileLexer.l"
+ { return INT; }
+ YY_BREAK
+ case 5:
+ YY_RULE_SETUP
+ #line 185 "/Users/sabre/cvs/llvm/utils/TableGen/FileLexer.l"
+ { return BIT; }
+ YY_BREAK
+ case 6:
+ YY_RULE_SETUP
+ #line 186 "/Users/sabre/cvs/llvm/utils/TableGen/FileLexer.l"
+ { return BITS; }
+ YY_BREAK
+ case 7:
+ YY_RULE_SETUP
+ #line 187 "/Users/sabre/cvs/llvm/utils/TableGen/FileLexer.l"
+ { return STRING; }
+ YY_BREAK
+ case 8:
+ YY_RULE_SETUP
+ #line 188 "/Users/sabre/cvs/llvm/utils/TableGen/FileLexer.l"
+ { return LIST; }
+ YY_BREAK
+ case 9:
+ YY_RULE_SETUP
+ #line 189 "/Users/sabre/cvs/llvm/utils/TableGen/FileLexer.l"
+ { return CODE; }
+ YY_BREAK
+ case 10:
+ YY_RULE_SETUP
+ #line 190 "/Users/sabre/cvs/llvm/utils/TableGen/FileLexer.l"
+ { return DAG; }
+ YY_BREAK
+ case 11:
+ YY_RULE_SETUP
+ #line 192 "/Users/sabre/cvs/llvm/utils/TableGen/FileLexer.l"
+ { return CLASS; }
+ YY_BREAK
+ case 12:
+ YY_RULE_SETUP
+ #line 193 "/Users/sabre/cvs/llvm/utils/TableGen/FileLexer.l"
+ { return DEF; }
+ YY_BREAK
+ case 13:
+ YY_RULE_SETUP
+ #line 194 "/Users/sabre/cvs/llvm/utils/TableGen/FileLexer.l"
+ { return FIELD; }
+ YY_BREAK
+ case 14:
+ YY_RULE_SETUP
+ #line 195 "/Users/sabre/cvs/llvm/utils/TableGen/FileLexer.l"
+ { return LET; }
+ YY_BREAK
+ case 15:
+ YY_RULE_SETUP
+ #line 196 "/Users/sabre/cvs/llvm/utils/TableGen/FileLexer.l"
+ { return IN; }
+ YY_BREAK
+ case 16:
+ YY_RULE_SETUP
+ #line 198 "/Users/sabre/cvs/llvm/utils/TableGen/FileLexer.l"
+ { return SRATOK; }
+ YY_BREAK
+ case 17:
+ YY_RULE_SETUP
+ #line 199 "/Users/sabre/cvs/llvm/utils/TableGen/FileLexer.l"
+ { return SRLTOK; }
+ YY_BREAK
+ case 18:
+ YY_RULE_SETUP
+ #line 200 "/Users/sabre/cvs/llvm/utils/TableGen/FileLexer.l"
+ { return SHLTOK; }
+ YY_BREAK
+ case 19:
+ YY_RULE_SETUP
+ #line 203 "/Users/sabre/cvs/llvm/utils/TableGen/FileLexer.l"
+ { Filelval.StrVal = new std::string(yytext, yytext+yyleng);
+ return ID; }
+ YY_BREAK
+ case 20:
+ YY_RULE_SETUP
+ #line 205 "/Users/sabre/cvs/llvm/utils/TableGen/FileLexer.l"
+ { Filelval.StrVal = new std::string(yytext+1, yytext+yyleng);
+ return VARNAME; }
+ YY_BREAK
+ case 21:
+ YY_RULE_SETUP
+ #line 208 "/Users/sabre/cvs/llvm/utils/TableGen/FileLexer.l"
+ { Filelval.StrVal = new std::string(yytext+1, yytext+yyleng-1);
+ return STRVAL; }
+ YY_BREAK
+ case 22:
+ YY_RULE_SETUP
+ #line 211 "/Users/sabre/cvs/llvm/utils/TableGen/FileLexer.l"
+ { Filelval.IntVal = ParseInt(Filetext); return INTVAL; }
+ YY_BREAK
+ case 23:
+ YY_RULE_SETUP
+ #line 213 "/Users/sabre/cvs/llvm/utils/TableGen/FileLexer.l"
+ { /* Ignore whitespace */ }
+ YY_BREAK
+ case 24:
+ YY_RULE_SETUP
+ #line 216 "/Users/sabre/cvs/llvm/utils/TableGen/FileLexer.l"
+ { BEGIN(comment); CommentDepth++; }
+ YY_BREAK
+ case 25:
+ YY_RULE_SETUP
+ #line 217 "/Users/sabre/cvs/llvm/utils/TableGen/FileLexer.l"
+ {} /* eat anything that's not a '*' or '/' */
+ YY_BREAK
+ case 26:
+ YY_RULE_SETUP
+ #line 218 "/Users/sabre/cvs/llvm/utils/TableGen/FileLexer.l"
+ {} /* eat up '*'s not followed by '/'s */
+ YY_BREAK
+ case 27:
+ YY_RULE_SETUP
+ #line 219 "/Users/sabre/cvs/llvm/utils/TableGen/FileLexer.l"
+ { ++CommentDepth; }
+ YY_BREAK
+ case 28:
+ YY_RULE_SETUP
+ #line 220 "/Users/sabre/cvs/llvm/utils/TableGen/FileLexer.l"
+ {} /* eat up /'s not followed by *'s */
+ YY_BREAK
+ case 29:
+ YY_RULE_SETUP
+ #line 221 "/Users/sabre/cvs/llvm/utils/TableGen/FileLexer.l"
+ { if (!--CommentDepth) { BEGIN(INITIAL); } }
+ YY_BREAK
+ case YY_STATE_EOF(comment):
+ #line 222 "/Users/sabre/cvs/llvm/utils/TableGen/FileLexer.l"
+ { err() << "Unterminated comment!\n"; exit(1); }
+ YY_BREAK
+ case 30:
+ YY_RULE_SETUP
+ #line 224 "/Users/sabre/cvs/llvm/utils/TableGen/FileLexer.l"
+ { return Filetext[0]; }
+ YY_BREAK
+ case 31:
+ YY_RULE_SETUP
+ #line 226 "/Users/sabre/cvs/llvm/utils/TableGen/FileLexer.l"
+ YY_FATAL_ERROR( "flex scanner jammed" );
+ YY_BREAK
+ #line 1056 "Lexer.cpp"
+ case YY_STATE_EOF(INITIAL):
+ yyterminate();
+
+ case YY_END_OF_BUFFER:
+ {
+ /* Amount of text matched not including the EOB char. */
+ int yy_amount_of_matched_text = (int) (yy_cp - yytext_ptr) - 1;
+
+ /* Undo the effects of YY_DO_BEFORE_ACTION. */
+ *yy_cp = yy_hold_char;
+ YY_RESTORE_YY_MORE_OFFSET
+
+ if ( yy_current_buffer->yy_buffer_status == YY_BUFFER_NEW )
+ {
+ /* We're scanning a new file or input source. It's
+ * possible that this happened because the user
+ * just pointed yyin at a new source and called
+ * yylex(). If so, then we have to assure
+ * consistency between yy_current_buffer and our
+ * globals. Here is the right place to do so, because
+ * this is the first action (other than possibly a
+ * back-up) that will match for the new input source.
+ */
+ yy_n_chars = yy_current_buffer->yy_n_chars;
+ yy_current_buffer->yy_input_file = yyin;
+ yy_current_buffer->yy_buffer_status = YY_BUFFER_NORMAL;
+ }
+
+ /* Note that here we test for yy_c_buf_p "<=" to the position
+ * of the first EOB in the buffer, since yy_c_buf_p will
+ * already have been incremented past the NUL character
+ * (since all states make transitions on EOB to the
+ * end-of-buffer state). Contrast this with the test
+ * in input().
+ */
+ if ( yy_c_buf_p <= &yy_current_buffer->yy_ch_buf[yy_n_chars] )
+ { /* This was really a NUL. */
+ yy_state_type yy_next_state;
+
+ yy_c_buf_p = yytext_ptr + yy_amount_of_matched_text;
+
+ yy_current_state = yy_get_previous_state();
+
+ /* Okay, we're now positioned to make the NUL
+ * transition. We couldn't have
+ * yy_get_previous_state() go ahead and do it
+ * for us because it doesn't know how to deal
+ * with the possibility of jamming (and we don't
+ * want to build jamming into it because then it
+ * will run more slowly).
+ */
+
+ yy_next_state = yy_try_NUL_trans( yy_current_state );
+
+ yy_bp = yytext_ptr + YY_MORE_ADJ;
+
+ if ( yy_next_state )
+ {
+ /* Consume the NUL. */
+ yy_cp = ++yy_c_buf_p;
+ yy_current_state = yy_next_state;
+ goto yy_match;
+ }
+
+ else
+ {
+ yy_cp = yy_c_buf_p;
+ goto yy_find_action;
+ }
+ }
+
+ else switch ( yy_get_next_buffer() )
+ {
+ case EOB_ACT_END_OF_FILE:
+ {
+ yy_did_buffer_switch_on_eof = 0;
+
+ if ( yywrap() )
+ {
+ /* Note: because we've taken care in
+ * yy_get_next_buffer() to have set up
+ * yytext, we can now set up
+ * yy_c_buf_p so that if some total
+ * hoser (like flex itself) wants to
+ * call the scanner after we return the
+ * YY_NULL, it'll still work - another
+ * YY_NULL will get returned.
+ */
+ yy_c_buf_p = yytext_ptr + YY_MORE_ADJ;
+
+ yy_act = YY_STATE_EOF(YY_START);
+ goto do_action;
+ }
+
+ else
+ {
+ if ( ! yy_did_buffer_switch_on_eof )
+ YY_NEW_FILE;
+ }
+ break;
+ }
+
+ case EOB_ACT_CONTINUE_SCAN:
+ yy_c_buf_p =
+ yytext_ptr + yy_amount_of_matched_text;
+
+ yy_current_state = yy_get_previous_state();
+
+ yy_cp = yy_c_buf_p;
+ yy_bp = yytext_ptr + YY_MORE_ADJ;
+ goto yy_match;
+
+ case EOB_ACT_LAST_MATCH:
+ yy_c_buf_p =
+ &yy_current_buffer->yy_ch_buf[yy_n_chars];
+
+ yy_current_state = yy_get_previous_state();
+
+ yy_cp = yy_c_buf_p;
+ yy_bp = yytext_ptr + YY_MORE_ADJ;
+ goto yy_find_action;
+ }
+ break;
+ }
+
+ default:
+ YY_FATAL_ERROR(
+ "fatal flex scanner internal error--no action found" );
+ } /* end of action switch */
+ } /* end of scanning one token */
+ } /* end of yylex */
+
+
+ /* yy_get_next_buffer - try to read in a new buffer
+ *
+ * Returns a code representing an action:
+ * EOB_ACT_LAST_MATCH -
+ * EOB_ACT_CONTINUE_SCAN - continue scanning from current position
+ * EOB_ACT_END_OF_FILE - end of file
+ */
+
+ static int yy_get_next_buffer()
+ {
+ register char *dest = yy_current_buffer->yy_ch_buf;
+ register char *source = yytext_ptr;
+ register int number_to_move, i;
+ int ret_val;
+
+ if ( yy_c_buf_p > &yy_current_buffer->yy_ch_buf[yy_n_chars + 1] )
+ YY_FATAL_ERROR(
+ "fatal flex scanner internal error--end of buffer missed" );
+
+ if ( yy_current_buffer->yy_fill_buffer == 0 )
+ { /* Don't try to fill the buffer, so this is an EOF. */
+ if ( yy_c_buf_p - yytext_ptr - YY_MORE_ADJ == 1 )
+ {
+ /* We matched a single character, the EOB, so
+ * treat this as a final EOF.
+ */
+ return EOB_ACT_END_OF_FILE;
+ }
+
+ else
+ {
+ /* We matched some text prior to the EOB, first
+ * process it.
+ */
+ return EOB_ACT_LAST_MATCH;
+ }
+ }
+
+ /* Try to read more data. */
+
+ /* First move last chars to start of buffer. */
+ number_to_move = (int) (yy_c_buf_p - yytext_ptr) - 1;
+
+ for ( i = 0; i < number_to_move; ++i )
+ *(dest++) = *(source++);
+
+ if ( yy_current_buffer->yy_buffer_status == YY_BUFFER_EOF_PENDING )
+ /* don't do the read, it's not guaranteed to return an EOF,
+ * just force an EOF
+ */
+ yy_current_buffer->yy_n_chars = yy_n_chars = 0;
+
+ else
+ {
+ int num_to_read =
+ yy_current_buffer->yy_buf_size - number_to_move - 1;
+
+ while ( num_to_read <= 0 )
+ { /* Not enough room in the buffer - grow it. */
+ #ifdef YY_USES_REJECT
+ YY_FATAL_ERROR(
+ "input buffer overflow, can't enlarge buffer because scanner uses REJECT" );
+ #else
+
+ /* just a shorter name for the current buffer */
+ YY_BUFFER_STATE b = yy_current_buffer;
+
+ int yy_c_buf_p_offset =
+ (int) (yy_c_buf_p - b->yy_ch_buf);
+
+ if ( b->yy_is_our_buffer )
+ {
+ int new_size = b->yy_buf_size * 2;
+
+ if ( new_size <= 0 )
+ b->yy_buf_size += b->yy_buf_size / 8;
+ else
+ b->yy_buf_size *= 2;
+
+ b->yy_ch_buf = (char *)
+ /* Include room in for 2 EOB chars. */
+ yy_flex_realloc( (void *) b->yy_ch_buf,
+ b->yy_buf_size + 2 );
+ }
+ else
+ /* Can't grow it, we don't own it. */
+ b->yy_ch_buf = 0;
+
+ if ( ! b->yy_ch_buf )
+ YY_FATAL_ERROR(
+ "fatal error - scanner input buffer overflow" );
+
+ yy_c_buf_p = &b->yy_ch_buf[yy_c_buf_p_offset];
+
+ num_to_read = yy_current_buffer->yy_buf_size -
+ number_to_move - 1;
+ #endif
+ }
+
+ if ( num_to_read > YY_READ_BUF_SIZE )
+ num_to_read = YY_READ_BUF_SIZE;
+
+ /* Read in more data. */
+ YY_INPUT( (&yy_current_buffer->yy_ch_buf[number_to_move]),
+ yy_n_chars, num_to_read );
+
+ yy_current_buffer->yy_n_chars = yy_n_chars;
+ }
+
+ if ( yy_n_chars == 0 )
+ {
+ if ( number_to_move == YY_MORE_ADJ )
+ {
+ ret_val = EOB_ACT_END_OF_FILE;
+ yyrestart( yyin );
+ }
+
+ else
+ {
+ ret_val = EOB_ACT_LAST_MATCH;
+ yy_current_buffer->yy_buffer_status =
+ YY_BUFFER_EOF_PENDING;
+ }
+ }
+
+ else
+ ret_val = EOB_ACT_CONTINUE_SCAN;
+
+ yy_n_chars += number_to_move;
+ yy_current_buffer->yy_ch_buf[yy_n_chars] = YY_END_OF_BUFFER_CHAR;
+ yy_current_buffer->yy_ch_buf[yy_n_chars + 1] = YY_END_OF_BUFFER_CHAR;
+
+ yytext_ptr = &yy_current_buffer->yy_ch_buf[0];
+
+ return ret_val;
+ }
+
+
+ /* yy_get_previous_state - get the state just before the EOB char was reached */
+
+ static yy_state_type yy_get_previous_state()
+ {
+ register yy_state_type yy_current_state;
+ register char *yy_cp;
+
+ yy_current_state = yy_start;
+ yy_state_ptr = yy_state_buf;
+ *yy_state_ptr++ = yy_current_state;
+
+ for ( yy_cp = yytext_ptr + YY_MORE_ADJ; yy_cp < yy_c_buf_p; ++yy_cp )
+ {
+ register YY_CHAR yy_c = (*yy_cp ? yy_ec[YY_SC_TO_UI(*yy_cp)] : 1);
+ while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
+ {
+ yy_current_state = (int) yy_def[yy_current_state];
+ if ( yy_current_state >= 100 )
+ yy_c = yy_meta[(unsigned int) yy_c];
+ }
+ yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
+ *yy_state_ptr++ = yy_current_state;
+ }
+
+ return yy_current_state;
+ }
+
+
+ /* yy_try_NUL_trans - try to make a transition on the NUL character
+ *
+ * synopsis
+ * next_state = yy_try_NUL_trans( current_state );
+ */
+
+ #ifdef YY_USE_PROTOS
+ static yy_state_type yy_try_NUL_trans( yy_state_type yy_current_state )
+ #else
+ static yy_state_type yy_try_NUL_trans( yy_current_state )
+ yy_state_type yy_current_state;
+ #endif
+ {
+ register int yy_is_jam;
+
+ register YY_CHAR yy_c = 1;
+ while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
+ {
+ yy_current_state = (int) yy_def[yy_current_state];
+ if ( yy_current_state >= 100 )
+ yy_c = yy_meta[(unsigned int) yy_c];
+ }
+ yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
+ yy_is_jam = (yy_current_state == 99);
+ if ( ! yy_is_jam )
+ *yy_state_ptr++ = yy_current_state;
+
+ return yy_is_jam ? 0 : yy_current_state;
+ }
+
+
+ #ifndef YY_NO_UNPUT
+ #ifdef YY_USE_PROTOS
+ static inline void yyunput( int c, register char *yy_bp )
+ #else
+ static inline void yyunput( c, yy_bp )
+ int c;
+ register char *yy_bp;
+ #endif
+ {
+ register char *yy_cp = yy_c_buf_p;
+
+ /* undo effects of setting up yytext */
+ *yy_cp = yy_hold_char;
+
+ if ( yy_cp < yy_current_buffer->yy_ch_buf + 2 )
+ { /* need to shift things up to make room */
+ /* +2 for EOB chars. */
+ register int number_to_move = yy_n_chars + 2;
+ register char *dest = &yy_current_buffer->yy_ch_buf[
+ yy_current_buffer->yy_buf_size + 2];
+ register char *source =
+ &yy_current_buffer->yy_ch_buf[number_to_move];
+
+ while ( source > yy_current_buffer->yy_ch_buf )
+ *--dest = *--source;
+
+ yy_cp += (int) (dest - source);
+ yy_bp += (int) (dest - source);
+ yy_current_buffer->yy_n_chars =
+ yy_n_chars = yy_current_buffer->yy_buf_size;
+
+ if ( yy_cp < yy_current_buffer->yy_ch_buf + 2 )
+ YY_FATAL_ERROR( "flex scanner push-back overflow" );
+ }
+
+ *--yy_cp = (char) c;
+
+ if ( c == '\n' )
+ --yylineno;
+
+ yytext_ptr = yy_bp;
+ yy_hold_char = *yy_cp;
+ yy_c_buf_p = yy_cp;
+ }
+ #endif /* ifndef YY_NO_UNPUT */
+
+
+ #ifdef __cplusplus
+ static int yyinput()
+ #else
+ static int input()
+ #endif
+ {
+ int c;
+
+ *yy_c_buf_p = yy_hold_char;
+
+ if ( *yy_c_buf_p == YY_END_OF_BUFFER_CHAR )
+ {
+ /* yy_c_buf_p now points to the character we want to return.
+ * If this occurs *before* the EOB characters, then it's a
+ * valid NUL; if not, then we've hit the end of the buffer.
+ */
+ if ( yy_c_buf_p < &yy_current_buffer->yy_ch_buf[yy_n_chars] )
+ /* This was really a NUL. */
+ *yy_c_buf_p = '\0';
+
+ else
+ { /* need more input */
+ int offset = yy_c_buf_p - yytext_ptr;
+ ++yy_c_buf_p;
+
+ switch ( yy_get_next_buffer() )
+ {
+ case EOB_ACT_LAST_MATCH:
+ /* This happens because yy_g_n_b()
+ * sees that we've accumulated a
+ * token and flags that we need to
+ * try matching the token before
+ * proceeding. But for input(),
+ * there's no matching to consider.
+ * So convert the EOB_ACT_LAST_MATCH
+ * to EOB_ACT_END_OF_FILE.
+ */
+
+ /* Reset buffer status. */
+ yyrestart( yyin );
+
+ /* fall through */
+
+ case EOB_ACT_END_OF_FILE:
+ {
+ if ( yywrap() )
+ return EOF;
+
+ if ( ! yy_did_buffer_switch_on_eof )
+ YY_NEW_FILE;
+ #ifdef __cplusplus
+ return yyinput();
+ #else
+ return input();
+ #endif
+ }
+
+ case EOB_ACT_CONTINUE_SCAN:
+ yy_c_buf_p = yytext_ptr + offset;
+ break;
+ }
+ }
+ }
+
+ c = *(unsigned char *) yy_c_buf_p; /* cast for 8-bit char's */
+ *yy_c_buf_p = '\0'; /* preserve yytext */
+ yy_hold_char = *++yy_c_buf_p;
+
+ if ( c == '\n' )
+ ++yylineno;
+
+ return c;
+ }
+
+
+ #ifdef YY_USE_PROTOS
+ void yyrestart( FILE *input_file )
+ #else
+ void yyrestart( input_file )
+ FILE *input_file;
+ #endif
+ {
+ if ( ! yy_current_buffer )
+ yy_current_buffer = yy_create_buffer( yyin, YY_BUF_SIZE );
+
+ yy_init_buffer( yy_current_buffer, input_file );
+ yy_load_buffer_state();
+ }
+
+
+ #ifdef YY_USE_PROTOS
+ void yy_switch_to_buffer( YY_BUFFER_STATE new_buffer )
+ #else
+ void yy_switch_to_buffer( new_buffer )
+ YY_BUFFER_STATE new_buffer;
+ #endif
+ {
+ if ( yy_current_buffer == new_buffer )
+ return;
+
+ if ( yy_current_buffer )
+ {
+ /* Flush out information for old buffer. */
+ *yy_c_buf_p = yy_hold_char;
+ yy_current_buffer->yy_buf_pos = yy_c_buf_p;
+ yy_current_buffer->yy_n_chars = yy_n_chars;
+ }
+
+ yy_current_buffer = new_buffer;
+ yy_load_buffer_state();
+
+ /* We don't actually know whether we did this switch during
+ * EOF (yywrap()) processing, but the only time this flag
+ * is looked at is after yywrap() is called, so it's safe
+ * to go ahead and always set it.
+ */
+ yy_did_buffer_switch_on_eof = 1;
+ }
+
+
+ #ifdef YY_USE_PROTOS
+ void yy_load_buffer_state( void )
+ #else
+ void yy_load_buffer_state()
+ #endif
+ {
+ yy_n_chars = yy_current_buffer->yy_n_chars;
+ yytext_ptr = yy_c_buf_p = yy_current_buffer->yy_buf_pos;
+ yyin = yy_current_buffer->yy_input_file;
+ yy_hold_char = *yy_c_buf_p;
+ }
+
+
+ #ifdef YY_USE_PROTOS
+ YY_BUFFER_STATE yy_create_buffer( FILE *file, int size )
+ #else
+ YY_BUFFER_STATE yy_create_buffer( file, size )
+ FILE *file;
+ int size;
+ #endif
+ {
+ YY_BUFFER_STATE b;
+
+ b = (YY_BUFFER_STATE) yy_flex_alloc( sizeof( struct yy_buffer_state ) );
+ if ( ! b )
+ YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
+
+ b->yy_buf_size = size;
+
+ /* yy_ch_buf has to be 2 characters longer than the size given because
+ * we need to put in 2 end-of-buffer characters.
+ */
+ b->yy_ch_buf = (char *) yy_flex_alloc( b->yy_buf_size + 2 );
+ if ( ! b->yy_ch_buf )
+ YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
+
+ b->yy_is_our_buffer = 1;
+
+ yy_init_buffer( b, file );
+
+ return b;
+ }
+
+
+ #ifdef YY_USE_PROTOS
+ void yy_delete_buffer( YY_BUFFER_STATE b )
+ #else
+ void yy_delete_buffer( b )
+ YY_BUFFER_STATE b;
+ #endif
+ {
+ if ( ! b )
+ return;
+
+ if ( b == yy_current_buffer )
+ yy_current_buffer = (YY_BUFFER_STATE) 0;
+
+ if ( b->yy_is_our_buffer )
+ yy_flex_free( (void *) b->yy_ch_buf );
+
+ yy_flex_free( (void *) b );
+ }
+
+
+ #ifndef YY_ALWAYS_INTERACTIVE
+ #ifndef YY_NEVER_INTERACTIVE
+ extern int isatty YY_PROTO(( int ));
+ #endif
+ #endif
+
+ #ifdef YY_USE_PROTOS
+ void yy_init_buffer( YY_BUFFER_STATE b, FILE *file )
+ #else
+ void yy_init_buffer( b, file )
+ YY_BUFFER_STATE b;
+ FILE *file;
+ #endif
+
+
+ {
+ yy_flush_buffer( b );
+
+ b->yy_input_file = file;
+ b->yy_fill_buffer = 1;
+
+ #if YY_ALWAYS_INTERACTIVE
+ b->yy_is_interactive = 1;
+ #else
+ #if YY_NEVER_INTERACTIVE
+ b->yy_is_interactive = 0;
+ #else
+ b->yy_is_interactive = file ? (isatty( fileno(file) ) > 0) : 0;
+ #endif
+ #endif
+ }
+
+
+ #ifdef YY_USE_PROTOS
+ void yy_flush_buffer( YY_BUFFER_STATE b )
+ #else
+ void yy_flush_buffer( b )
+ YY_BUFFER_STATE b;
+ #endif
+
+ {
+ if ( ! b )
+ return;
+
+ b->yy_n_chars = 0;
+
+ /* We always need two end-of-buffer characters. The first causes
+ * a transition to the end-of-buffer state. The second causes
+ * a jam in that state.
+ */
+ b->yy_ch_buf[0] = YY_END_OF_BUFFER_CHAR;
+ b->yy_ch_buf[1] = YY_END_OF_BUFFER_CHAR;
+
+ b->yy_buf_pos = &b->yy_ch_buf[0];
+
+ b->yy_at_bol = 1;
+ b->yy_buffer_status = YY_BUFFER_NEW;
+
+ if ( b == yy_current_buffer )
+ yy_load_buffer_state();
+ }
+
+
+ #ifndef YY_NO_SCAN_BUFFER
+ #ifdef YY_USE_PROTOS
+ YY_BUFFER_STATE yy_scan_buffer( char *base, yy_size_t size )
+ #else
+ YY_BUFFER_STATE yy_scan_buffer( base, size )
+ char *base;
+ yy_size_t size;
+ #endif
+ {
+ YY_BUFFER_STATE b;
+
+ if ( size < 2 ||
+ base[size-2] != YY_END_OF_BUFFER_CHAR ||
+ base[size-1] != YY_END_OF_BUFFER_CHAR )
+ /* They forgot to leave room for the EOB's. */
+ return 0;
+
+ b = (YY_BUFFER_STATE) yy_flex_alloc( sizeof( struct yy_buffer_state ) );
+ if ( ! b )
+ YY_FATAL_ERROR( "out of dynamic memory in yy_scan_buffer()" );
+
+ b->yy_buf_size = size - 2; /* "- 2" to take care of EOB's */
+ b->yy_buf_pos = b->yy_ch_buf = base;
+ b->yy_is_our_buffer = 0;
+ b->yy_input_file = 0;
+ b->yy_n_chars = b->yy_buf_size;
+ b->yy_is_interactive = 0;
+ b->yy_at_bol = 1;
+ b->yy_fill_buffer = 0;
+ b->yy_buffer_status = YY_BUFFER_NEW;
+
+ yy_switch_to_buffer( b );
+
+ return b;
+ }
+ #endif
+
+
+ #ifndef YY_NO_SCAN_STRING
+ #ifdef YY_USE_PROTOS
+ YY_BUFFER_STATE yy_scan_string( yyconst char *yy_str )
+ #else
+ YY_BUFFER_STATE yy_scan_string( yy_str )
+ yyconst char *yy_str;
+ #endif
+ {
+ int len;
+ for ( len = 0; yy_str[len]; ++len )
+ ;
+
+ return yy_scan_bytes( yy_str, len );
+ }
+ #endif
+
+
+ #ifndef YY_NO_SCAN_BYTES
+ #ifdef YY_USE_PROTOS
+ YY_BUFFER_STATE yy_scan_bytes( yyconst char *bytes, int len )
+ #else
+ YY_BUFFER_STATE yy_scan_bytes( bytes, len )
+ yyconst char *bytes;
+ int len;
+ #endif
+ {
+ YY_BUFFER_STATE b;
+ char *buf;
+ yy_size_t n;
+ int i;
+
+ /* Get memory for full buffer, including space for trailing EOB's. */
+ n = len + 2;
+ buf = (char *) yy_flex_alloc( n );
+ if ( ! buf )
+ YY_FATAL_ERROR( "out of dynamic memory in yy_scan_bytes()" );
+
+ for ( i = 0; i < len; ++i )
+ buf[i] = bytes[i];
+
+ buf[len] = buf[len+1] = YY_END_OF_BUFFER_CHAR;
+
+ b = yy_scan_buffer( buf, n );
+ if ( ! b )
+ YY_FATAL_ERROR( "bad buffer in yy_scan_bytes()" );
+
+ /* It's okay to grow etc. this buffer, and we should throw it
+ * away when we're done.
+ */
+ b->yy_is_our_buffer = 1;
+
+ return b;
+ }
+ #endif
+
+
+ #ifndef YY_NO_PUSH_STATE
+ #ifdef YY_USE_PROTOS
+ static void yy_push_state( int new_state )
+ #else
+ static void yy_push_state( new_state )
+ int new_state;
+ #endif
+ {
+ if ( yy_start_stack_ptr >= yy_start_stack_depth )
+ {
+ yy_size_t new_size;
+
+ yy_start_stack_depth += YY_START_STACK_INCR;
+ new_size = yy_start_stack_depth * sizeof( int );
+
+ if ( ! yy_start_stack )
+ yy_start_stack = (int *) yy_flex_alloc( new_size );
+
+ else
+ yy_start_stack = (int *) yy_flex_realloc(
+ (void *) yy_start_stack, new_size );
+
+ if ( ! yy_start_stack )
+ YY_FATAL_ERROR(
+ "out of memory expanding start-condition stack" );
+ }
+
+ yy_start_stack[yy_start_stack_ptr++] = YY_START;
+
+ BEGIN(new_state);
+ }
+ #endif
+
+
+ #ifndef YY_NO_POP_STATE
+ static void yy_pop_state()
+ {
+ if ( --yy_start_stack_ptr < 0 )
+ YY_FATAL_ERROR( "start-condition stack underflow" );
+
+ BEGIN(yy_start_stack[yy_start_stack_ptr]);
+ }
+ #endif
+
+
+ #ifndef YY_NO_TOP_STATE
+ static int yy_top_state()
+ {
+ return yy_start_stack[yy_start_stack_ptr - 1];
+ }
+ #endif
+
+ #ifndef YY_EXIT_FAILURE
+ #define YY_EXIT_FAILURE 2
+ #endif
+
+ #ifdef YY_USE_PROTOS
+ static void yy_fatal_error( yyconst char msg[] )
+ #else
+ static void yy_fatal_error( msg )
+ char msg[];
+ #endif
+ {
+ (void) fprintf( stderr, "%s\n", msg );
+ exit( YY_EXIT_FAILURE );
+ }
+
+
+
+ /* Redefine yyless() so it works in section 3 code. */
+
+ #undef yyless
+ #define yyless(n) \
+ do \
+ { \
+ /* Undo effects of setting up yytext. */ \
+ yytext[yyleng] = yy_hold_char; \
+ yy_c_buf_p = yytext + n; \
+ yy_hold_char = *yy_c_buf_p; \
+ *yy_c_buf_p = '\0'; \
+ yyleng = n; \
+ } \
+ while ( 0 )
+
+
+ /* Internal utility routines. */
+
+ #ifndef yytext_ptr
+ #ifdef YY_USE_PROTOS
+ static void yy_flex_strncpy( char *s1, yyconst char *s2, int n )
+ #else
+ static void yy_flex_strncpy( s1, s2, n )
+ char *s1;
+ yyconst char *s2;
+ int n;
+ #endif
+ {
+ register int i;
+ for ( i = 0; i < n; ++i )
+ s1[i] = s2[i];
+ }
+ #endif
+
+ #ifdef YY_NEED_STRLEN
+ #ifdef YY_USE_PROTOS
+ static int yy_flex_strlen( yyconst char *s )
+ #else
+ static int yy_flex_strlen( s )
+ yyconst char *s;
+ #endif
+ {
+ register int n;
+ for ( n = 0; s[n]; ++n )
+ ;
+
+ return n;
+ }
+ #endif
+
+
+ #ifdef YY_USE_PROTOS
+ static void *yy_flex_alloc( yy_size_t size )
+ #else
+ static void *yy_flex_alloc( size )
+ yy_size_t size;
+ #endif
+ {
+ return (void *) malloc( size );
+ }
+
+ #ifdef YY_USE_PROTOS
+ static inline void *yy_flex_realloc( void *ptr, yy_size_t size )
+ #else
+ static inline void *yy_flex_realloc( ptr, size )
+ void *ptr;
+ yy_size_t size;
+ #endif
+ {
+ /* The cast to (char *) in the following accommodates both
+ * implementations that use char* generic pointers, and those
+ * that use void* generic pointers. It works with the latter
+ * because both ANSI C and C++ allow castless assignment from
+ * any pointer type to void*, and deal with argument conversions
+ * as though doing an assignment.
+ */
+ return (void *) realloc( (char *) ptr, size );
+ }
+
+ #ifdef YY_USE_PROTOS
+ static void yy_flex_free( void *ptr )
+ #else
+ static void yy_flex_free( ptr )
+ void *ptr;
+ #endif
+ {
+ free( ptr );
+ }
+
+ #if YY_MAIN
+ int main()
+ {
+ yylex();
+ return 0;
+ }
+ #endif
+ #line 226 "/Users/sabre/cvs/llvm/utils/TableGen/FileLexer.l"
+
+
Index: llvm/utils/TableGen/FileLexer.l.cvs
diff -c /dev/null llvm/utils/TableGen/FileLexer.l.cvs:1.1
*** /dev/null Mon Feb 13 23:13:25 2006
--- llvm/utils/TableGen/FileLexer.l.cvs Mon Feb 13 23:13:13 2006
***************
*** 0 ****
--- 1,227 ----
+ /*===-- FileLexer.l - Scanner for TableGen Files ----------------*- C++ -*-===//
+ //
+ // The LLVM Compiler Infrastructure
+ //
+ // This file was developed by the LLVM research group and is distributed under
+ // the University of Illinois Open Source License. See LICENSE.TXT for details.
+ //
+ //===----------------------------------------------------------------------===//
+ //
+ // This file defines a simple flex scanner for TableGen files. This is pretty
+ // straight-forward, except for the magic to handle file inclusion.
+ //
+ //===----------------------------------------------------------------------===*/
+
+ %option prefix="File"
+ %option yylineno
+ %option nostdinit
+ %option never-interactive
+ %option batch
+ %option nodefault
+ %option 8bit
+ %option outfile="Lexer.cpp"
+ %option ecs
+ %option noreject
+ %option noyymore
+
+ %x comment
+
+ %{
+ #include "Record.h"
+ typedef std::pair<llvm::Record*, std::vector<llvm::Init*>*> SubClassRefTy;
+ #include "FileParser.h"
+
+ int Fileparse();
+
+ namespace llvm {
+
+ // Global variable recording the location of the include directory
+ std::string IncludeDirectory;
+
+ /// ParseInt - This has to handle the special case of binary numbers 0b0101
+ ///
+ static int ParseInt(const char *Str) {
+ if (Str[0] == '0' && Str[1] == 'b')
+ return strtol(Str+2, 0, 2);
+ return strtol(Str, 0, 0);
+ }
+
+ static int CommentDepth = 0;
+
+ struct IncludeRec {
+ std::string Filename;
+ FILE *File;
+ unsigned LineNo;
+ YY_BUFFER_STATE Buffer;
+
+ IncludeRec(const std::string &FN, FILE *F)
+ : Filename(FN), File(F), LineNo(0){
+ }
+ };
+
+ static std::vector<IncludeRec> IncludeStack;
+
+ std::ostream &err() {
+ if (IncludeStack.empty())
+ return std::cerr << "At end of input: ";
+
+ for (unsigned i = 0, e = IncludeStack.size()-1; i != e; ++i)
+ std::cerr << "Included from " << IncludeStack[i].Filename << ":"
+ << IncludeStack[i].LineNo << ":\n";
+ return std::cerr << "Parsing " << IncludeStack.back().Filename << ":"
+ << Filelineno << ": ";
+ }
+
+ /// ParseFile - this function begins the parsing of the specified tablegen file.
+ ///
+ void ParseFile(const std::string &Filename, const std::string & IncludeDir) {
+ FILE *F = stdin;
+ if (Filename != "-") {
+ F = fopen(Filename.c_str(), "r");
+
+ if (F == 0) {
+ std::cerr << "Could not open input file '" + Filename + "'!\n";
+ exit (1);
+ }
+ IncludeStack.push_back(IncludeRec(Filename, F));
+ } else {
+ IncludeStack.push_back(IncludeRec("<stdin>", stdin));
+ }
+
+ // Record the location of the include directory so that the lexer can find
+ // it later.
+ IncludeDirectory = IncludeDir;
+
+ Filein = F;
+ Filelineno = 1;
+ Fileparse();
+ Filein = stdin;
+ }
+
+ /// HandleInclude - This function is called when an include directive is
+ /// encountered in the input stream...
+ ///
+ static void HandleInclude(const char *Buffer) {
+ unsigned Length = yyleng;
+ assert(Buffer[Length-1] == '"');
+ Buffer += strlen("include ");
+ Length -= strlen("include ");
+ while (*Buffer != '"') {
+ ++Buffer;
+ --Length;
+ }
+ assert(Length >= 2 && "Double quotes not found?");
+ std::string Filename(Buffer+1, Buffer+Length-1);
+ //std::cerr << "Filename = '" << Filename << "'\n";
+
+ // Save the line number and lex buffer of the includer...
+ IncludeStack.back().LineNo = Filelineno;
+ IncludeStack.back().Buffer = YY_CURRENT_BUFFER;
+
+ // Open the new input file...
+ yyin = fopen(Filename.c_str(), "r");
+ if (yyin == 0) {
+ // If we couldn't find the file in the current directory, look for it in
+ // the include directories.
+ //
+ // NOTE: Right now, there is only one directory. We need to eventually add
+ // support for more.
+ std::string NextFilename = IncludeDirectory + "/" + Filename;
+ yyin = fopen(NextFilename.c_str(), "r");
+ if (yyin == 0) {
+ err() << "Could not find include file '" << Filename << "'!\n";
+ exit(1);
+ }
+ Filename = NextFilename;
+ }
+
+ // Add the file to our include stack...
+ IncludeStack.push_back(IncludeRec(Filename, yyin));
+ Filelineno = 1; // Reset line numbering...
+ //yyrestart(yyin); // Start lexing the new file...
+
+ yy_switch_to_buffer(yy_create_buffer(yyin, YY_BUF_SIZE));
+ }
+
+ /// yywrap - This is called when the lexer runs out of input in one of the
+ /// files. Switch back to an includer if an includee has run out of input.
+ ///
+ extern "C"
+ int yywrap(void) {
+ if (IncludeStack.back().File != stdin)
+ fclose(IncludeStack.back().File);
+ IncludeStack.pop_back();
+ if (IncludeStack.empty()) return 1; // Top-level file is done.
+
+ // Otherwise, we need to switch back to a file which included the current one.
+ Filelineno = IncludeStack.back().LineNo; // Restore current line number
+ yy_switch_to_buffer(IncludeStack.back().Buffer);
+ return 0;
+ }
+
+ } // End llvm namespace
+
+ using namespace llvm;
+
+ %}
+
+ Comment \/\/.*
+
+ Identifier [a-zA-Z_][0-9a-zA-Z_]*
+ Integer [-+]?[0-9]+|0x[0-9a-fA-F]+|0b[01]+
+ CodeFragment \[\{([^}]+|\}[^\]])*\}\]
+ StringVal \"[^"]*\"
+ IncludeStr include[ \t\n]+\"[^"]*\"
+
+ %%
+
+ {Comment} { /* Ignore comments */ }
+
+ {IncludeStr} { HandleInclude(yytext); }
+ {CodeFragment} { Filelval.StrVal = new std::string(yytext+2, yytext+yyleng-2);
+ return CODEFRAGMENT; }
+
+ int { return INT; }
+ bit { return BIT; }
+ bits { return BITS; }
+ string { return STRING; }
+ list { return LIST; }
+ code { return CODE; }
+ dag { return DAG; }
+
+ class { return CLASS; }
+ def { return DEF; }
+ field { return FIELD; }
+ let { return LET; }
+ in { return IN; }
+
+ !sra { return SRATOK; }
+ !srl { return SRLTOK; }
+ !shl { return SHLTOK; }
+
+
+ {Identifier} { Filelval.StrVal = new std::string(yytext, yytext+yyleng);
+ return ID; }
+ ${Identifier} { Filelval.StrVal = new std::string(yytext+1, yytext+yyleng);
+ return VARNAME; }
+
+ {StringVal} { Filelval.StrVal = new std::string(yytext+1, yytext+yyleng-1);
+ return STRVAL; }
+
+ {Integer} { Filelval.IntVal = ParseInt(Filetext); return INTVAL; }
+
+ [ \t\n\r]+ { /* Ignore whitespace */ }
+
+
+ "/*" { BEGIN(comment); CommentDepth++; }
+ <comment>[^*/]* {} /* eat anything that's not a '*' or '/' */
+ <comment>"*"+[^*/]* {} /* eat up '*'s not followed by '/'s */
+ <comment>"/*" { ++CommentDepth; }
+ <comment>"/"+[^*/]* {} /* eat up /'s not followed by *'s */
+ <comment>"*"+"/" { if (!--CommentDepth) { BEGIN(INITIAL); } }
+ <comment><<EOF>> { err() << "Unterminated comment!\n"; exit(1); }
+
+ . { return Filetext[0]; }
+
+ %%
+
Index: llvm/utils/TableGen/FileLexer.l
diff -u llvm/utils/TableGen/FileLexer.l:1.25 llvm/utils/TableGen/FileLexer.l:1.26
--- llvm/utils/TableGen/FileLexer.l:1.25 Tue Sep 6 16:23:09 2005
+++ llvm/utils/TableGen/FileLexer.l Mon Feb 13 23:13:13 2006
@@ -224,3 +224,4 @@
. { return Filetext[0]; }
%%
+
More information about the llvm-commits
mailing list