/** @file ginsh_lexer.ll
*
* Lexical analyzer definition for ginsh.
- * This file must be processed with flex.
- *
- * GiNaC Copyright (C) 1999-2000 Johannes Gutenberg University Mainz, Germany
+ * This file must be processed with flex. */
+
+/*
+ * GiNaC Copyright (C) 1999-2005 Johannes Gutenberg University Mainz, Germany
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* Definitions
*/
+%pointer
+
%{
#include "config.h"
// Table of all used symbols
sym_tab syms;
+// Type of symbols to generate (real or complex)
+unsigned symboltype = domain::complex;
+
// lex input function
static int ginsh_input(char *buf, int max_size);
%}
%%
[ \t\n]+ /* skip whitespace */
\\$ /* skip line continuations */
-"#".* /* skip comments starting with "#" */
+"//".* /* skip comments starting with "//" */
+^"#".* /* skip lines starting with "#" */
^"!".* system(yytext + 1); /* execute shell command */
/* special values */
Pi yylval = Pi; return T_LITERAL;
-EulerGamma yylval = EulerGamma; return T_LITERAL;
+Euler yylval = Euler; return T_LITERAL;
Catalan yylval = Catalan; return T_LITERAL;
FAIL yylval = *new fail(); return T_LITERAL;
I yylval = I; return T_NUMBER;
/* keywords */
quit|exit return T_QUIT;
+warranty return T_WARRANTY;
print return T_PRINT;
-read return T_READ;
-write return T_WRITE;
+iprint return T_IPRINT;
+print_latex return T_PRINTLATEX;
+print_csrc return T_PRINTCSRC;
time return T_TIME;
xyzzy return T_XYZZY;
inventory return T_INVENTORY;
look return T_LOOK;
score return T_SCORE;
+complex_symbols return T_COMPLEX_SYMBOLS;
+real_symbols return T_REAL_SYMBOLS;
/* comparison */
"==" return T_EQUAL;
">=" return T_GREATEREQ;
/* last 1..3 expressions */
-\" return T_QUOTE;
-\"\" return T_QUOTE2;
-\"\"\" return T_QUOTE3;
-
- /* matrix delimiters */
-\[\[ return T_MATRIX_BEGIN;
-\]\] return T_MATRIX_END;
+\% return T_QUOTE;
+\%\% return T_QUOTE2;
+\%\%\% return T_QUOTE3;
/* numbers */
{D}+ |
+"#"{D}+"R"{AN}+ |
+"#b"([01])+ |
+"#o"[0-7]+ |
+"#x"[0-9a-fA-F]+ |
{D}+"."{D}*({E})? |
{D}*"."{D}+({E})? |
{D}+{E} yylval = numeric(yytext); return T_NUMBER;
/* symbols */
{A}{AN}* {
- if (syms.find(yytext) == syms.end())
- syms[yytext] = *(new symbol(yytext));
- yylval = syms[yytext];
+ sym_tab::const_iterator i = syms.find(yytext);
+ if (i == syms.end()) {
+ if (symboltype == domain::complex) {
+ yylval = syms[yytext] = *(new symbol(yytext));
+ } else {
+ yylval = syms[yytext] = *(new symbol(yytext, domain::real));
+ }
+ } else
+ yylval = i->second;
return T_SYMBOL;
}
+ /* wildcards */
+\${D}+ yylval = wild(atoi(yytext + 1)); return T_LITERAL;
+
/* everything else */
. return *yytext;
static int ginsh_input(char *buf, int max_size)
{
int result;
+#if defined(YY_CURRENT_BUFFER)
+ if (YY_CURRENT_BUFFER->yy_is_interactive) {
+#else
if (yy_current_buffer->yy_is_interactive) {
+#endif
#ifdef HAVE_LIBREADLINE
// Do we need to read a new line?
int actual;