almost parses CustomTF ($macro junk next)

This commit is contained in:
Bill Currie 2001-06-13 07:16:39 +00:00
parent a3d2d83e18
commit c89da89b69
3 changed files with 188 additions and 25 deletions

View file

@ -1,23 +1,83 @@
%{
#include <QF/hash.h>
#include "qfcc.h"
#include "qc-parse.h"
#define YY_NO_UNPUT
int lineno;
void error (char*s){}
int type_or_name (char *token);
int do_grab (void);
extern YYSTYPE yylval;
%}
DIGIT [0-9]
ID [a-zA-Z_][a-zA-Z_0-9]*
FLOAT {DIGIT}+"."{DIGIT}*
NUM ({DIGIT}+("."{DIGIT}*)?)
s [ \t]
m ([\-+]?)
%%
{DIGIT}+"."{DIGIT}* return IMMEDIATE;
"/*" {
int c;
do {
while ((c = input ()) != '*' && c != EOF
&& c != '\n')
;
while (c == '*')
c = input ();
if (c == EOF)
error ("EOF in comment");
if (c == '\n')
lineno++;
} while (c != '/' && c != EOF);
}
{ID} return NAME;
"//".*$ /* nothing to do */
\"(\.|[^"])*\"
{DIGIT}+ {
yylval.int_val = atoi (yytext);
return INT_VAL;
}
"!"|"("|")"|"{"|"}"|"."|"*"|"/"|"&"|"|"|"+"|"-"|"="|"["|"]" return yytext[0];
{FLOAT}* {
yylval.float_val = atof (yytext);
return FLOAT_VAL;
}
{ID} return type_or_name(yytext);
\"(\\.|[^"])*\" {
//yylval.string_val = strdup (yytext);
return STRING_VAL;
}
'{s}*{m}{NUM}{s}+{m}{NUM}{s}+{m}{NUM}{s}*' {
sscanf (yytext, "%f %f %f", &yylval.vector_val[0],
&yylval.vector_val[1],
&yylval.vector_val[2]);
return VECTOR_VAL;
}
'{s}*{m}{NUM}{s}+{m}{NUM}{s}+{m}{NUM}{s}+{m}{NUM}{s}*' {
sscanf (yytext, "%f %f %f %f", &yylval.vector_val[0],
&yylval.vector_val[1],
&yylval.vector_val[2],
&yylval.vector_val[3]);
return VECTOR_VAL;
}
"!"|"("|")"|"{"|"}"|"."|"*"|"/"|"&"|"|"|"+"|"-"|"="|"["|"]"|"#"|";"|"," return yytext[0];
"..." return ELIPSIS;
"&&" return AND;
"||" return OR;
@ -28,11 +88,18 @@ ID [a-zA-Z_][a-zA-Z_0-9]*
"<" return LT;
">" return GT;
^#
"$"{ID} {
int ret = do_grab();
if (ret)
return ret;
}
\n
^#{s}+{DIGIT}+{s}+\"(\.|[^"])*\".$ {
}
.
\n lineno++;
. error ("all your typo are belong to us");
%%
@ -41,3 +108,63 @@ yywrap (void)
{
return 1;
}
typedef struct {
const char *name;
int value;
type_t *type;
} keyword_t;
static keyword_t keywords[] = {
{"float", TYPE, &type_float },
{"vector", TYPE, &type_vector},
{"entity", TYPE, &type_entity},
{"string", TYPE, &type_string},
{"void", TYPE, &type_void },
{"local", LOCAL, 0 },
{"return", RETURN, 0 },
{"while", WHILE, 0 },
{"do", DO, 0 },
{"if", IF, 0 },
{"else", ELSE, 0 },
{"for", FOR, 0 },
};
static const char *
keyword_get_key (void *kw, void *unused)
{
return ((keyword_t*)kw)->name;
}
int
type_or_name (char *token)
{
static int initialized = 0;
static hashtab_t *keyword_tab;
keyword_t *keyword;
if (!initialized) {
int i;
keyword_tab = Hash_NewTable (1021, keyword_get_key, 0, 0);
for (i = 0; i < sizeof (keywords) / sizeof (keywords[0]); i++)
Hash_Add (keyword_tab, &keywords[i]);
initialized = 1;
}
keyword = Hash_Find (keyword_tab, token);
if (keyword) {
yylval.type = keyword->type;
return keyword->value;
}
return NAME;
}
int
do_grab (void)
{
static int initialized;
if (!initialized) {
initialized = 1;
}
return 0;
}

View file

@ -1,10 +1,12 @@
%{
#include "qfcc.h"
#define YYDEBUG 1
#define YYERROR_VERBOSE 1
void
yyerror (char *s)
{
fprintf (stderr, "%s\n", s);
extern int lineno;
fprintf (stderr, "%d, %s\n", lineno, s);
}
int yylex (void);
@ -13,6 +15,12 @@ int yylex (void);
%union {
def_t *def;
type_t *type;
int int_val;
float float_val;
char *string_val;
float vector_val[3];
float quaternion_val[4];
}
%left OR AND
@ -22,9 +30,9 @@ int yylex (void);
%left '*' '/' '&' '|'
%left '!' '.' '('
%token NAME IMMEDIATE
%token NAME INT_VAL FLOAT_VAL STRING_VAL VECTOR_VAL QUATERNION_VAL
%token LOCAL TYPE RETURN WHILE DO IF ELSE FOR
%token LOCAL TYPE RETURN WHILE DO IF ELSE FOR ELIPSIS
%expect 1
@ -36,8 +44,12 @@ defs
;
def
: TYPE def_list
| '.' TYPE def_list
: type def_list
;
type
: TYPE
| '.' TYPE
;
def_list
@ -48,22 +60,24 @@ def_list
def_item
: NAME opt_initializer
| '(' param_list ')' NAME opt_initializer
| '(' ')' NAME opt_initializer
| '(' ELIPSIS ')' NAME opt_initializer
;
param_list
: /* emtpy */
: param
| param_list ',' param
;
param
: TYPE NAME
: type def_item
;
opt_initializer
: /*empty*/
| '=' '#' IMMEDIATE
| '=' '#' const
| '=' statement_block
| '=' IMMEDIATE
| '=' const
| '=' '[' expr ',' expr ']' statement_block
;
@ -73,21 +87,21 @@ statement_block
statements
: /*empty*/
| statements statement ';'
| statements statement
;
statement
: ';'
| statement_block
| RETURN expr
| RETURN
| RETURN expr ';'
| RETURN ';'
| WHILE '(' expr ')' statement
| DO statement WHILE '(' expr ')'
| LOCAL def_list
| DO statement WHILE '(' expr ')' ';'
| LOCAL type def_list ';'
| IF '(' expr ')' statement
| IF '(' expr ')' statement ELSE statement
| FOR '(' expr ';' expr ';' expr ')' statement
| expr
| expr ';'
;
expr
@ -108,15 +122,25 @@ expr
| expr '|' expr
| expr '.' expr
| expr '(' arg_list ')'
| expr '(' ')'
| '-' expr
| '!' expr
| NAME
| IMMEDIATE
| const
| '(' expr ')'
;
arg_list
: /*empty*/
: expr
| arg_list ',' expr
;
const
: FLOAT_VAL
| STRING_VAL
| VECTOR_VAL
| QUATERNION_VAL
| INT_VAL
;
%%

View file

@ -904,12 +904,24 @@ Options: \n\
// compile all the files
while ((src = COM_Parse (src))) {
//extern FILE *yyin;
//int yyparse(void);
//extern int yydebug;
//extern int lineno;
//yydebug = 1;
sprintf (filename, "%s/%s", sourcedir, com_token);
printf ("compiling %s\n", filename);
LoadFile (filename, (void *) &src2);
if (!PR_CompileFile (src2, filename))
//yyin = fopen (filename, "rt");
//lineno = 1;
//if (yyparse ()) {
// printf ("%s\n", filename);
return 1;
//}
//fclose (yyin);
}
if (!PR_FinishCompilation ())