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wxWidgets/wxPython/wxSWIG/SWIG/scanner.cxx
Robin Dunn c90f71dd8c Since I have made several changes to SWIG over the years to accomodate 
special cases and other things in wxPython, and since I plan on making
several more, I've decided to put the SWIG sources in wxPython's CVS
instead of relying on maintaining patches.  This effectivly becomes a
fork of an obsolete version of SWIG, :-( but since SWIG 1.3 still
doesn't have some things I rely on in 1.1, not to mention that my
custom patches would all have to be redone, I felt that this is the
easier road to take.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@15307 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2002-04-29 19:56:57 +00:00

1382 lines
34 KiB
C++
Raw Blame History

/*******************************************************************************
* Simplified Wrapper and Interface Generator (SWIG)
*
* Author : David Beazley
*
* Department of Computer Science
* University of Chicago
* 1100 E 58th Street
* Chicago, IL 60637
* beazley@cs.uchicago.edu
*
* Please read the file LICENSE for the copyright and terms by which SWIG
* can be used and distributed.
*******************************************************************************/
/*************************************************************************
* $Header$
* scanner.c
*
* Dave Beazley
* January 1996
*
* Input scanner. This scanner finds and returns tokens
* for the wrapper generator. Since using lex/flex from
* C++ is so F'ed up, I've written this function to replace
* them entirely. It's not as fast, but hopefully it will
* eliminate alot of compilation problems.
*
*************************************************************************/
#include "internal.h"
#include "parser.h"
#include <string.h>
#include <ctype.h>
#define YYBSIZE 8192
struct InFile {
FILE *f;
int line_number;
char *in_file;
int extern_mode;
int force_extern;
struct InFile *prev;
};
// This structure is used for managing code fragments as
// might be used by the %inline directive and handling of
// nested structures.
struct CodeFragment {
char *text;
int line_number;
CodeFragment *next;
};
InFile *in_head;
FILE *LEX_in = NULL;
static String header;
static String comment;
String CCode; // String containing C code
static char *yybuffer;
static int lex_pos = 0;
static int lex_len = 0;
static char *inline_yybuffer = 0;
static int inline_lex_pos = 0;
static int inline_lex_len = 0;
static int inline_line_number = 0;
static CodeFragment *fragments = 0; // Code fragments
static
char yytext[YYBSIZE];
static int yylen = 0;
int line_number = 1;
int column = 1;
int column_start = 1;
char *input_file;
int start_line = 0;
static int comment_start;
static int scan_init = 0;
static int num_brace = 0;
static int last_brace = 0;
static int in_define = 0;
static int define_first_id = 0; /* Set when looking for first identifier of a define */
extern int Error;
/**************************************************************
* scanner_init()
*
* Initialize buffers
**************************************************************/
void scanner_init() {
yybuffer = (char *) malloc(YYBSIZE);
scan_init = 1;
}
/**************************************************************
* scanner_file(FILE *f)
*
* Start reading from new file
**************************************************************/
void scanner_file(FILE *f) {
InFile *in;
in = new InFile;
in->f = f;
in->in_file = input_file;
in->extern_mode = WrapExtern;
in->force_extern = ForceExtern;
if (in_head) in_head->line_number = line_number+1;
if (!in_head) in->prev = 0;
else in->prev = in_head;
in_head = in;
LEX_in = f;
line_number = 1;
}
/**************************************************************
* scanner_close()
*
* Close current input file and go to next
**************************************************************/
void scanner_close() {
InFile *p;
static int lib_insert = 0;
fclose(LEX_in);
if (!in_head) return;
p = in_head->prev;
if (p != 0) {
LEX_in = p->f;
line_number = p->line_number;
input_file = p->in_file;
WrapExtern = p->extern_mode;
if (!WrapExtern) remove_symbol("SWIGEXTERN");
ForceExtern = p->force_extern;
} else {
LEX_in = NULL;
}
delete in_head;
in_head = p;
// if LEX_in is NULL it means we're done with the interface file. We're now
// going to grab all of the library files.
if ((!LEX_in) && (!lib_insert)) {
library_insert();
lib_insert = 1;
}
}
/**************************************************************
* char nextchar()
*
* gets next character from input.
* If we're in inlining mode, we actually retrieve a character
* from inline_yybuffer instead.
**************************************************************/
char nextchar() {
char c = 0;
if (Inline) {
if (inline_lex_pos >= inline_lex_len) {
// Done with inlined code. Check to see if we have any
// new code fragments. If so, switch to them.
delete inline_yybuffer;
if (fragments) {
CodeFragment *f;
inline_yybuffer = fragments->text;
inline_lex_pos = 1;
inline_lex_len = strlen(fragments->text);
line_number = fragments->line_number;
f = fragments->next;
delete fragments;
fragments = f;
c = inline_yybuffer[0];
} else {
c = 0;
Inline = 0;
line_number = inline_line_number; // Restore old line number
}
} else {
inline_lex_pos++;
c = inline_yybuffer[inline_lex_pos-1];
}
}
if (!Inline) {
if (lex_pos >= lex_len) {
if (!LEX_in) {
SWIG_exit(1);
}
while(fgets(yybuffer, YYBSIZE, LEX_in) == NULL) {
scanner_close(); // Close current input file
if (!LEX_in) return 0; // No more, we're outta here
}
lex_len = strlen(yybuffer);
lex_pos = 0;
}
lex_pos++;
c = yybuffer[lex_pos-1];
}
if (yylen >= YYBSIZE) {
fprintf(stderr,"** FATAL ERROR. Buffer overflow in scanner.cxx.\nReport this to swig@cs.utah.edu.\n");
SWIG_exit(1);
}
yytext[yylen] = c;
yylen++;
if (c == '\n') {
line_number++;
column = 1;
} else {
column++;
}
return(c);
}
void retract(int n) {
int i, j, c;
for (i = 0; i < n; i++) {
if (Inline) {
inline_lex_pos--;
if (inline_lex_pos < 0) {
fprintf(stderr,"Internal scanner error. inline_lex_pos < 0\n");
SWIG_exit(1);
}
}
else lex_pos--;
yylen--;
column--;
if (yylen >= 0) {
if (yytext[yylen] == '\n') {
line_number--;
// Figure out what column we're in
c = yylen-1;
j = 1;
while (c >= 0){
if (yytext[c] == '\n') break;
j++;
c--;
}
column = j;
}
}
}
if (yylen < 0) yylen = 0;
}
/**************************************************************
* start_inline(char *text, int line)
*
* This grabs a chunk of text and tries to inline it into
* the current file. (This is kind of wild, but cool when
* it works).
*
* If we're already in inlining mode, we will save the code
* as a new fragment.
**************************************************************/
void start_inline(char *text, int line) {
if (Inline) {
// Already processing a code fragment, simply hang on
// to this one for later.
CodeFragment *f,*f1;
// Add a new code fragment to our list
f = new CodeFragment;
f->text = copy_string(text);
f->line_number = line;
f->next = 0;
if (!fragments) fragments = f;
else {
f1 = fragments;
while (f1->next) f1 = f1->next;
f1->next = f;
}
} else {
// Switch our scanner over to process text from a string.
// Save current line number and other information however.
inline_yybuffer = copy_string(text);
inline_lex_len = strlen(text);
inline_lex_pos = 0;
inline_line_number = line_number; // Make copy of old line number
line_number = line;
Inline = 1;
}
}
/**************************************************************
* yycomment(char *, int line)
*
* Inserts a comment into a documentation entry.
**************************************************************/
void yycomment(char *s, int line, int col) {
comment_handler->add_comment(s,line,col,input_file);
}
/**************************************************************
* void skip_brace(void)
*
* Found a {.
* Skip all characters until we find a matching closed }.
*
* This function is used to skip over inlined C code and other
* garbage found in interface files.
***************************************************************/
void skip_brace(void) {
char c;
CCode = "{";
while (num_brace > last_brace) {
if ((c = nextchar()) == 0) {
fprintf(stderr,"%s : Line %d. Missing '}'. Reached end of input.\n",
input_file, line_number);
FatalError();
return;
}
CCode << c;
if (c == '{') num_brace++;
if (c == '}') num_brace--;
yylen = 0;
}
}
/**************************************************************
* void skip_template(void)
*
* Found a <.
* Skip all characters until we find a matching closed >.
*
* This function is used to skip over C++ templated types
* and objective-C protocols.
***************************************************************/
void skip_template(void) {
char c;
CCode = "<";
int num_lt = 1;
while (num_lt > 0) {
if ((c = nextchar()) == 0) {
fprintf(stderr,"%s : Line %d. Missing '>'. Reached end of input.\n",
input_file, line_number);
FatalError();
return;
}
CCode << c;
if (c == '<') num_lt++;
if (c == '>') num_lt--;
yylen = 0;
}
}
/**************************************************************
* void skip_to_end(void)
*
* Skips to the @end directive in a Objective-C definition
**************************************************************/
void skip_to_end(void) {
char c;
int state = 0;
yylen = 0;
while ((c = nextchar())){
switch(state) {
case 0:
if (c == '@') state = 1;
else yylen = 0;
break;
case 1:
if (isspace(c)) {
if (strncmp(yytext,"@end",4) == 0) return;
else {
yylen = 0;
state = 0;
}
} else {
state = 1;
}
break;
}
}
fprintf(stderr,"%s : EOF. Missing @end. Reached end of input.\n",
input_file);
FatalError();
return;
}
/**************************************************************
* void skip_decl(void)
*
* This tries to skip over an entire declaration. For example
*
* friend ostream& operator<<(ostream&, const char *s);
*
* or
* friend ostream& operator<<(ostream&, const char *s) { };
*
**************************************************************/
void skip_decl(void) {
char c;
int done = 0;
while (!done) {
if ((c = nextchar()) == 0) {
fprintf(stderr,"%s : Line %d. Missing semicolon. Reached end of input.\n",
input_file, line_number);
FatalError();
return;
}
if (c == '{') {
last_brace = num_brace;
num_brace++;
break;
}
yylen = 0;
if (c == ';') done = 1;
}
if (!done) {
while (num_brace > last_brace) {
if ((c = nextchar()) == 0) {
fprintf(stderr,"%s : Line %d. Missing '}'. Reached end of input.\n",
input_file, line_number);
FatalError();
return;
}
if (c == '{') num_brace++;
if (c == '}') num_brace--;
yylen = 0;
}
}
}
/**************************************************************
* void skip_define(void)
*
* Skips to the end of a #define statement.
*
**************************************************************/
void skip_define(void) {
char c;
while (in_define) {
if ((c = nextchar()) == 0) return;
if (c == '\\') in_define = 2;
if (c == '\n') {
if (in_define == 2) {
in_define = 1;
} else if (in_define == 1) {
in_define = 0;
}
}
yylen = 0;
}
}
/**************************************************************
* int skip_cond(int inthen)
*
* Skips the false portion of an #ifdef directive. Looks
* for either a matching #else or #endif
*
* inthen is 0 or 1 depending on whether or not we're
* handling the "then" or "else" part of a conditional.
*
* Returns 1 if the else part of the #if-#endif block was
* reached. Returns 0 otherwise. Returns -1 on error.
**************************************************************/
int skip_cond(int inthen) {
int level = 0; /* Used to handled nested if-then-else */
int state = 0;
char c;
int start_line;
char *file;
file = copy_string(input_file);
start_line = line_number;
yylen = 0;
while(1) {
switch(state) {
case 0 :
if ((c = nextchar()) == 0) {
fprintf(stderr,"%s : Line %d. Unterminated #if-else directive.\n", file, start_line);
FatalError();
return -1; /* Error */
}
if ((c == '#') || (c == '%')) {
state = 1;
} else if (isspace(c)) {
yylen =0;
state = 0;
} else {
/* Some non-whitespace character. Look for line end */
yylen = 0;
state = 3;
}
break;
case 1:
/* Beginning of a C preprocessor statement */
if ((c = nextchar()) == 0) {
fprintf(stderr,"%s : Line %d. Unterminated #if-else directive.\n", file, start_line);
FatalError();
return -1; /* Error */
}
if (c == '\n') {
state = 0;
yylen = 0;
}
else if (isspace(c)) {
state = 1;
yylen--;
} else {
state = 2;
}
break;
case 2:
/* CPP directive */
if ((c = nextchar()) == 0) {
fprintf(stderr,"%s : Line %d. Unterminated #if-else directive.\n", file, start_line);
FatalError();
return -1; /* Error */
}
if ((c == ' ') || (c == '\t') || (c=='\n')) {
yytext[yylen-1] = 0;
if ((strcmp(yytext,"#ifdef") == 0) || (strcmp(yytext,"%ifdef") == 0)) {
level++;
state = 0;
} else if ((strcmp(yytext,"#ifndef") == 0) || (strcmp(yytext,"%ifndef") == 0)) {
level++;
state = 0;
} else if ((strcmp(yytext,"#if") == 0) || (strcmp(yytext,"%if") == 0)) {
level++;
state = 0;
} else if ((strcmp(yytext,"#else") == 0) || (strcmp(yytext,"%else") == 0)) {
if (level == 0) { /* Found matching else. exit */
if (!inthen) {
/* Hmmm. We've got an "extra #else" directive here */
fprintf(stderr,"%s : Line %d. Misplaced #else.\n", input_file, line_number);
FatalError();
yylen = 0;
state = 0;
} else {
yylen = 0;
delete file;
return 1;
}
} else {
yylen = 0;
state = 0;
}
} else if ((strcmp(yytext,"#endif") == 0) || (strcmp(yytext,"%endif") == 0)) {
if (level <= 0) { /* Found matching endif. exit */
yylen = 0;
delete file;
return 0;
} else {
state = 0;
yylen = 0;
level--;
}
} else if ((strcmp(yytext,"#elif") == 0) || (strcmp(yytext,"%elif") == 0)) {
if (level <= 0) {
// If we come across this, we pop it back onto the input queue and return
retract(6);
delete file;
return 0;
} else {
yylen = 0;
state = 0;
}
} else {
yylen = 0;
state = 0;
}
}
break;
case 3:
/* Non-white space. Look for line break */
if ((c = nextchar()) == 0) {
fprintf(stderr,"%s : Line %d. Unterminated #if directive.\n", file, start_line);
FatalError();
return -1; /* Error */
}
if (c == '\n') {
yylen = 0;
state = 0;
} else {
yylen = 0;
state = 3;
}
break;
}
}
}
/**************************************************************
* int yylook()
*
* Lexical scanner.
* See Aho,Sethi, and Ullman, pg. 106
**************************************************************/
int yylook(void) {
int state;
char c = 0;
state = 0;
yylen = 0;
while(1) {
/* printf("State = %d\n", state); */
switch(state) {
case 0 :
if((c = nextchar()) == 0) return(0);
/* Process delimeters */
if (c == '\n') {
state = 0;
yylen = 0;
if (in_define == 1) {
in_define = 0;
return(ENDDEF);
} else if (in_define == 2) {
in_define = 1;
}
} else if (isspace(c)) {
state = 0;
yylen = 0;
}
/* Look for single character symbols */
else if (c == '(') return (LPAREN);
else if (c == ')') return (RPAREN);
else if (c == ';') return (SEMI);
else if (c == ',') return (COMMA);
else if (c == '*') return (STAR);
else if (c == '}') {
num_brace--;
if (num_brace < 0) {
fprintf(stderr,"%s : Line %d. Error. Extraneous '}' (Ignored)\n",
input_file, line_number);
state = 0;
num_brace = 0;
} else {
return (RBRACE);
}
}
else if (c == '{') {
last_brace = num_brace;
num_brace++;
return (LBRACE);
}
else if (c == '=') return (EQUAL);
else if (c == '+') return (PLUS);
else if (c == '-') return (MINUS);
else if (c == '&') return (AND);
else if (c == '|') return (OR);
else if (c == '^') return (XOR);
else if (c == '<') state = 60;
else if (c == '>') state = 61;
else if (c == '~') return (NOT);
else if (c == '!') return (LNOT);
else if (c == '\\') {
if (in_define == 1) {
in_define = 2;
state = 0;
} else
state = 99;
}
else if (c == '[') return (LBRACKET);
else if (c == ']') return (RBRACKET);
/* Look for multi-character sequences */
else if (c == '/') state = 1; // Comment (maybe)
else if (c == '\"') state = 2; // Possibly a string
else if (c == '#') state = 3; // CPP
else if (c == '%') state = 4; // Directive
else if (c == '@') state = 4; // Objective C keyword
else if (c == ':') state = 5; // maybe double colon
else if (c == '0') state = 83; // An octal or hex value
else if (c == '\'') state = 9; // A character constant
else if (c == '.') state = 100; // Maybe a number, maybe just a period
else if (isdigit(c)) state = 8; // A numerical value
else if ((isalpha(c)) || (c == '_') || (c == '$')) state = 7;
else state = 99;
break;
case 1: /* Comment block */
if ((c = nextchar()) == 0) return(0);
if (c == '/') {
comment_start = line_number;
column_start = column;
comment = " ";
state = 10; // C++ style comment
} else if (c == '*') {
comment_start = line_number;
column_start = column;
comment = " ";
state = 11; // C style comment
} else {
retract(1);
return(SLASH);
}
break;
case 10: /* C++ style comment */
if ((c = nextchar()) == 0) {
fprintf(stderr,"%s : EOF. Unterminated comment detected.\n",input_file);
FatalError();
return 0;
}
if (c == '\n') {
comment << c;
// Add the comment to documentation
yycomment(comment.get(),comment_start, column_start);
yylen = 0;
state = 0;
if (in_define == 1) {
in_define = 0;
return(ENDDEF);
}
} else {
state = 10;
comment << c;
yylen = 0;
}
break;
case 11: /* C style comment block */
if ((c = nextchar()) == 0) {
fprintf(stderr,"%s : EOF. Unterminated comment detected.\n", input_file);
FatalError();
return 0;
}
if (c == '*') {
state = 12;
} else {
comment << c;
yylen = 0;
state = 11;
}
break;
case 12: /* Still in C style comment */
if ((c = nextchar()) == 0) {
fprintf(stderr,"%s : EOF. Unterminated comment detected.\n", input_file);
FatalError();
return 0;
}
if (c == '*') {
comment << c;
state = 12;
} else if (c == '/') {
comment << " \n";
yycomment(comment.get(),comment_start,column_start);
yylen = 0;
state = 0;
} else {
comment << '*' << c;
yylen = 0;
state = 11;
}
break;
case 2: /* Processing a string */
if ((c = nextchar()) == 0) {
fprintf(stderr,"%s : EOF. Unterminated string detected.\n", input_file);
FatalError();
return 0;
}
if (c == '\"') {
yytext[yylen-1] = 0;
yylval.id = copy_string(yytext+1);
return(STRING);
} else if (c == '\\') {
state = 21; /* Possibly an escape sequence. */
break;
} else state = 2;
break;
case 21: /* An escape sequence. get next character, then go
back to processing strings */
if ((c = nextchar()) == 0) return 0;
state = 2;
break;
case 3: /* a CPP directive */
if (( c= nextchar()) == 0) return 0;
if (c == '\n') {
retract(1);
yytext[yylen] = 0;
yylval.id = yytext;
return(POUND);
} else if ((c == ' ') || (c == '\t')) { // Ignore white space after # symbol
yytext[yylen] = 0;
yylen--;
state = 3;
} else {
yytext[yylen] = 0;
state = 31;
}
break;
case 31:
if ((c = nextchar()) == 0) return 0;
if ((c == ' ') || (c == '\t') || (c=='\n')) {
retract(1);
yytext[yylen] = 0;
if (strcmp(yytext,"#define") == 0) {
in_define = 1;
define_first_id = 1;
return(DEFINE);
} else if (strcmp(yytext,"#ifdef") == 0) {
return(IFDEF);
} else if (strcmp(yytext,"#ifndef") == 0) {
return(IFNDEF);
} else if (strcmp(yytext,"#else") == 0) {
return(ELSE);
} else if (strcmp(yytext,"#endif") == 0) {
return(ENDIF);
} else if (strcmp(yytext,"#undef") == 0) {
return(UNDEF);
} else if (strcmp(yytext,"#if") == 0) {
return(IF);
} else if (strcmp(yytext,"#elif") == 0) {
return(ELIF);
} else {
/* Some kind of "unknown CPP directive. Skip to end of the line */
state = 32;
}
}
break;
case 32:
if ((c = nextchar()) == 0) return 0;
if (c == '\n') {
retract(1);
yytext[yylen] = 0;
yylval.id = yytext;
return(POUND);
}
state = 32;
break;
case 4: /* A wrapper generator directive (maybe) */
if (( c= nextchar()) == 0) return 0;
if (c == '{') {
state = 40; /* Include block */
header = "";
start_line = line_number;
}
else if ((isalpha(c)) || (c == '_')) state = 7;
else {
retract(1);
state = 99;
}
break;
case 40: /* Process an include block */
if ((c = nextchar()) == 0) {
fprintf(stderr,"%s : EOF. Unterminated include block detected.\n", input_file);
FatalError();
return 0;
}
yylen = 0;
if (c == '%') state = 41;
else {
header << c;
yylen = 0;
state = 40;
}
break;
case 41: /* Still processing include block */
if ((c = nextchar()) == 0) {
fprintf(stderr,"%s : EOF. Unterminated include block detected.\n", input_file);
FatalError();
return 0;
}
if (c == '}') {
yylval.id = header.get();
return(HBLOCK);
} else {
header << '%';
header << c;
yylen = 0;
state = 40;
}
break;
case 5: /* Maybe a double colon */
if (( c= nextchar()) == 0) return 0;
if ( c == ':') return DCOLON;
else {
retract(1);
return COLON;
}
case 60: /* shift operators */
if ((c = nextchar()) == 0) return (0);
if (c == '<') return LSHIFT;
else {
retract(1);
return LESSTHAN;
}
break;
case 61:
if ((c = nextchar()) == 0) return (0);
if (c == '>') return RSHIFT;
else {
retract(1);
return GREATERTHAN;
}
break;
case 7: /* Identifier */
if ((c = nextchar()) == 0) return(0);
if (isalnum(c) || (c == '_') || (c == '.') || (c == '$'))
// || (c == '.') || (c == '-'))
state = 7;
else if (c == '(') {
/* We might just be in a CPP macro definition. Better check */
if ((in_define) && (define_first_id)) {
/* Yep. We're going to ignore the rest of it */
skip_define();
define_first_id = 0;
return (MACRO);
} else {
retract(1);
define_first_id = 0;
return(ID);
}
} else {
retract(1);
define_first_id = 0;
return(ID);
}
break;
case 8: /* A numerical digit */
if ((c = nextchar()) == 0) return(0);
if (c == '.') {state = 81;}
else if ((c == 'e') || (c == 'E')) {state = 86;}
else if ((c == 'f') || (c == 'F')) {
yytext[yylen] = 0;
yylval.id = copy_string(yytext);
return(NUM_FLOAT);
}
else if (isdigit(c)) { state = 8;}
else if ((c == 'l') || (c == 'L')) {
state = 87;
} else if ((c == 'u') || (c == 'U')) {
state = 88;
} else {
retract(1);
yytext[yylen] = 0;
yylval.id = copy_string(yytext);
return(NUM_INT);
}
break;
case 81: /* A floating pointer number of some sort */
if ((c = nextchar()) == 0) return(0);
if (isdigit(c)) state = 81;
else if ((c == 'e') || (c == 'E')) state = 82;
else if ((c == 'f') || (c == 'F') || (c == 'l') || (c == 'L')) {
yytext[yylen] = 0;
yylval.id = copy_string(yytext);
return(NUM_FLOAT);
} else {
retract(1);
yytext[yylen] = 0;
yylval.id = copy_string(yytext);
return(NUM_FLOAT);
}
break;
case 82:
if ((c = nextchar()) == 0) return(0);
if ((isdigit(c)) || (c == '-') || (c == '+')) state = 86;
else {
retract(2);
yytext[yylen-1] = 0;
yylval.id = copy_string(yytext);
return(NUM_INT);
}
break;
case 83:
/* Might be a hexidecimal or octal number */
if ((c = nextchar()) == 0) return(0);
if (isdigit(c)) state = 84;
else if ((c == 'x') || (c == 'X')) state = 85;
else if (c == '.') state = 81;
else if ((c == 'l') || (c == 'L')) {
state = 87;
} else if ((c == 'u') || (c == 'U')) {
state = 88;
} else {
retract(1);
yytext[yylen] = 0;
yylval.id = copy_string(yytext);
return(NUM_INT);
}
break;
case 84:
/* This is an octal number */
if ((c = nextchar()) == 0) return (0);
if (isdigit(c)) state = 84;
else if ((c == 'l') || (c == 'L')) {
state = 87;
} else if ((c == 'u') || (c == 'U')) {
state = 88;
} else {
retract(1);
yytext[yylen] = 0;
yylval.id = copy_string(yytext);
return(NUM_INT);
}
break;
case 85:
/* This is an hex number */
if ((c = nextchar()) == 0) return (0);
if ((isdigit(c)) || (c=='a') || (c=='b') || (c=='c') ||
(c=='d') || (c=='e') || (c=='f') || (c=='A') ||
(c=='B') || (c=='C') || (c=='D') || (c=='E') ||
(c=='F'))
state = 85;
else if ((c == 'l') || (c == 'L')) {
state = 87;
} else if ((c == 'u') || (c == 'U')) {
state = 88;
} else {
retract(1);
yytext[yylen] = 0;
yylval.id = copy_string(yytext);
return(NUM_INT);
}
break;
case 86:
/* Rest of floating point number */
if ((c = nextchar()) == 0) return (0);
if (isdigit(c)) state = 86;
else if ((c == 'f') || (c == 'F') || (c == 'l') || (c == 'L')) {
yytext[yylen] = 0;
yylval.id = copy_string(yytext);
return(NUM_FLOAT);
} else {
retract(1);
yytext[yylen] = 0;
yylval.id = copy_string(yytext);
return(NUM_FLOAT);
}
/* Parse a character constant. ie. 'a' */
break;
case 87 :
/* A long integer of some sort */
if ((c = nextchar()) == 0) return (0);
if ((c == 'u') || (c == 'U')) {
yytext[yylen] = 0;
yylval.id = copy_string(yytext);
return(NUM_ULONG);
} else {
retract(1);
yytext[yylen] = 0;
yylval.id = copy_string(yytext);
return(NUM_LONG);
}
case 88:
/* An unsigned integer of some sort */
if ((c = nextchar()) == 0) return (0);
if ((c == 'l') || (c == 'L')) {
yytext[yylen] = 0;
yylval.id = copy_string(yytext);
return(NUM_ULONG);
} else {
retract(1);
yytext[yylen] = 0;
yylval.id = copy_string(yytext);
return(NUM_UNSIGNED);
}
case 9:
if ((c = nextchar()) == 0) return (0);
if (c == '\'') {
yytext[yylen-1] = 0;
yylval.id = copy_string(yytext+1);
return(CHARCONST);
}
break;
case 100:
if ((c = nextchar()) == 0) return (0);
if (isdigit(c)) state = 81;
else {
retract(1);
return(PERIOD);
}
break;
default:
if (!Error) {
fprintf(stderr,"%s : Line %d ::Illegal character '%c'=%d.\n",input_file, line_number,c,c);
FatalError();
}
state = 0;
Error = 1;
return(ILLEGAL);
}
}
}
static int check_typedef = 0;
void scanner_check_typedef() {
check_typedef = 1;
}
void scanner_ignore_typedef() {
check_typedef = 0;
}
/**************************************************************
* int yylex()
*
* Gets the lexene and returns tokens.
*************************************************************/
extern "C" int yylex(void) {
int l;
if (!scan_init) {
scanner_init();
// if (LEX_in == NULL) LEX_in = stdin;
// scanner_file(LEX_in);
}
l = yylook();
/* We got some sort of non-white space object. We set the start_line
variable unless it has already been set */
if (!start_line) {
start_line = line_number;
}
/* Copy the lexene */
yytext[yylen] = 0;
/* Hack to support ignoring of CPP macros */
if (l != DEFINE) {
define_first_id = 0;
}
switch(l) {
case ID:
/* Look for keywords now */
if (strcmp(yytext,"int") == 0) {
yylval.type = new DataType;
yylval.type->type = T_INT;
strcpy(yylval.type->name,yytext);
return(TYPE_INT);
}
if (strcmp(yytext,"double") == 0) {
yylval.type = new DataType;
yylval.type->type = T_DOUBLE;
strcpy(yylval.type->name,yytext);
return(TYPE_DOUBLE);
}
if (strcmp(yytext,"void") == 0) {
yylval.type = new DataType;
yylval.type->type = T_VOID;
strcpy(yylval.type->name,yytext);
return(TYPE_VOID);
}
if (strcmp(yytext,"char") == 0) {
yylval.type = new DataType;
yylval.type->type = T_CHAR;
strcpy(yylval.type->name,yytext);
return(TYPE_CHAR);
}
if (strcmp(yytext,"short") == 0) {
yylval.type = new DataType;
yylval.type->type = T_SHORT;
strcpy(yylval.type->name,yytext);
return(TYPE_SHORT);
}
if (strcmp(yytext,"long") == 0) {
yylval.type = new DataType;
yylval.type->type = T_LONG;
strcpy(yylval.type->name,yytext);
return(TYPE_LONG);
}
if (strcmp(yytext,"float") == 0) {
yylval.type = new DataType;
yylval.type->type = T_FLOAT;
strcpy(yylval.type->name,yytext);
return(TYPE_FLOAT);
}
if (strcmp(yytext,"signed") == 0) {
yylval.type = new DataType;
yylval.type->type = T_SINT;
strcpy(yylval.type->name,yytext);
return(TYPE_SIGNED);
}
if (strcmp(yytext,"unsigned") == 0) {
yylval.type = new DataType;
yylval.type->type = T_UINT;
strcpy(yylval.type->name,yytext);
return(TYPE_UNSIGNED);
}
if (strcmp(yytext,"bool") == 0) {
yylval.type = new DataType;
yylval.type->type = T_BOOL;
strcpy(yylval.type->name,yytext);
return(TYPE_BOOL);
}
// C++ keywords
if (CPlusPlus) {
if (strcmp(yytext,"class") == 0) return(CLASS);
if (strcmp(yytext,"private") == 0) return(PRIVATE);
if (strcmp(yytext,"public") == 0) return(PUBLIC);
if (strcmp(yytext,"protected") == 0) return(PROTECTED);
if (strcmp(yytext,"friend") == 0) return(FRIEND);
if (strcmp(yytext,"virtual") == 0) return(VIRTUAL);
if (strcmp(yytext,"operator") == 0) return(OPERATOR);
if (strcmp(yytext,"throw") == 0) return(THROW);
if (strcmp(yytext,"inline") == 0) return(yylex());
if (strcmp(yytext,"template") == 0) return(TEMPLATE);
}
// Objective-C keywords
if (ObjC) {
if (strcmp(yytext,"@interface") == 0) return (OC_INTERFACE);
if (strcmp(yytext,"@end") == 0) return (OC_END);
if (strcmp(yytext,"@public") == 0) return (OC_PUBLIC);
if (strcmp(yytext,"@private") == 0) return (OC_PRIVATE);
if (strcmp(yytext,"@protected") == 0) return (OC_PROTECTED);
if (strcmp(yytext,"@class") == 0) return(OC_CLASS);
if (strcmp(yytext,"@implementation") == 0) return(OC_IMPLEMENT);
if (strcmp(yytext,"@protocol") == 0) return(OC_PROTOCOL);
}
// Misc keywords
if (strcmp(yytext,"static") == 0) return(STATIC);
if (strcmp(yytext,"extern") == 0) return(EXTERN);
if (strcmp(yytext,"const") == 0) return(CONST);
if (strcmp(yytext,"struct") == 0) return(STRUCT);
if (strcmp(yytext,"union") == 0) return(UNION);
if (strcmp(yytext,"enum") == 0) return(ENUM);
if (strcmp(yytext,"sizeof") == 0) return(SIZEOF);
if (strcmp(yytext,"defined") == 0) return(DEFINED);
// Ignored keywords
if (strcmp(yytext,"volatile") == 0) return(yylex());
// SWIG directives
if (strcmp(yytext,"%module") == 0) return(MODULE);
if (strcmp(yytext,"%init") == 0) return(INIT);
if (strcmp(yytext,"%wrapper") == 0) return(WRAPPER);
if (strcmp(yytext,"%readonly") == 0) return(READONLY);
if (strcmp(yytext,"%readwrite") == 0) return(READWRITE);
if (strcmp(yytext,"%name") == 0) return(NAME);
if (strcmp(yytext,"%rename") == 0) return(RENAME);
if (strcmp(yytext,"%include") == 0) return(INCLUDE);
if (strcmp(yytext,"%extern") == 0) return(WEXTERN);
if (strcmp(yytext,"%checkout") == 0) return(CHECKOUT);
if (strcmp(yytext,"%val") == 0) return(CVALUE);
if (strcmp(yytext,"%out") == 0) return(COUT);
if (strcmp(yytext,"%section") == 0) {
yylval.ivalue = line_number;
return(SECTION);
}
if (strcmp(yytext,"%subsection") == 0) {
yylval.ivalue = line_number;
return(SUBSECTION);
}
if (strcmp(yytext,"%subsubsection") == 0) {
yylval.ivalue = line_number;
return (SUBSUBSECTION);
}
if (strcmp(yytext,"%title") == 0) {
yylval.ivalue = line_number;
return(TITLE);
}
if (strcmp(yytext,"%style") == 0) return(STYLE);
if (strcmp(yytext,"%localstyle") == 0) return(LOCALSTYLE);
if (strcmp(yytext,"%typedef") == 0) {
yylval.ivalue = 1;
return(TYPEDEF);
}
if (strcmp(yytext,"typedef") == 0) {
yylval.ivalue = 0;
return(TYPEDEF);
}
if (strcmp(yytext,"%alpha") == 0) return(ALPHA_MODE);
if (strcmp(yytext,"%raw") == 0) return(RAW_MODE);
if (strcmp(yytext,"%text") == 0) return(TEXT);
if (strcmp(yytext,"%native") == 0) return(NATIVE);
if (strcmp(yytext,"%disabledoc") == 0) return(DOC_DISABLE);
if (strcmp(yytext,"%enabledoc") == 0) return(DOC_ENABLE);
if (strcmp(yytext,"%ifdef") == 0) return(IFDEF);
if (strcmp(yytext,"%else") == 0) return(ELSE);
if (strcmp(yytext,"%ifndef") == 0) return(IFNDEF);
if (strcmp(yytext,"%endif") == 0) return(ENDIF);
if (strcmp(yytext,"%if") == 0) return(IF);
if (strcmp(yytext,"%elif") == 0) return(ELIF);
if (strcmp(yytext,"%pragma") == 0) return(PRAGMA);
if (strcmp(yytext,"%addmethods") == 0) return(ADDMETHODS);
if (strcmp(yytext,"%inline") == 0) return(INLINE);
if (strcmp(yytext,"%typemap") == 0) return(TYPEMAP);
if (strcmp(yytext,"%except") == 0) return(EXCEPT);
if (strcmp(yytext,"%import") == 0) return(IMPORT);
if (strcmp(yytext,"%echo") == 0) return(ECHO);
if (strcmp(yytext,"%new") == 0) return(NEW);
if (strcmp(yytext,"%apply") == 0) return(APPLY);
if (strcmp(yytext,"%clear") == 0) return(CLEAR);
if (strcmp(yytext,"%doconly") == 0) return(DOCONLY);
// Have an unknown identifier, as a last step, we'll
// do a typedef lookup on it.
if (check_typedef) {
if (DataType::is_typedef(yytext)) {
yylval.type = new DataType;
yylval.type->type = T_USER;
strcpy(yylval.type->name,yytext);
yylval.type->typedef_resolve();
return(TYPE_TYPEDEF);
}
}
yylval.id = copy_string(yytext);
return(ID);
default:
return(l);
}
}
// --------------------------------------------------------------
// scanner_clear_start()
//
// Clears the start of a declaration
// --------------------------------------------------------------
void scanner_clear_start() {
start_line = 0;
}
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