3 * Helper classes for expression output. */
6 * GiNaC Copyright (C) 1999-2001 Johannes Gutenberg University Mainz, Germany
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 #ifndef __GINAC_PRINT_H__
24 #define __GINAC_PRINT_H__
31 /** Context for default (ginsh-parsable) output. */
35 print_context(std::ostream & os = std::cout) : s(os) {}
36 std::ostream & s; /**< stream to output to */
38 // dummy virtual function to make the class polymorphic
39 virtual void dummy(void) {}
42 /** Context for latex-parsable output. */
43 class print_latex : public print_context
46 print_latex(std::ostream & os = std::cout)
47 : print_context(os) {}
50 /** Context for tree-like output for debugging. */
51 class print_tree : public print_context
54 print_tree(std::ostream & os = std::cout, unsigned d = 4)
55 : print_context(os), delta_indent(d) {}
56 unsigned delta_indent; /**< size of indentation step */
59 /** Base context for C source output. */
60 class print_csrc : public print_context
63 print_csrc(std::ostream & os = std::cout)
64 : print_context(os) {}
67 /** Context for C source output using float numbers. */
68 class print_csrc_float : public print_csrc
71 print_csrc_float(std::ostream & os = std::cout)
75 /** Context for C source output using double numbers. */
76 class print_csrc_double : public print_csrc
79 print_csrc_double(std::ostream & os = std::cout)
83 /** Context for C source output using CLN numbers. */
84 class print_csrc_cl_N : public print_csrc
87 print_csrc_cl_N(std::ostream & os = std::cout)
91 /** Check if obj is a T, including base classes. */
93 inline bool is_a(const print_context & obj)
94 { return dynamic_cast<const T *>(&obj)!=0; }
98 #endif // ndef __GINAC_BASIC_H__