num_exp: RPN calculator

[m6w6/ext-psi] / src / types / number.h

diff --git a/src/types/number.h b/src/types/number.h
new file mode 100644 (file)
index 0000000..e3d02e6
--- /dev/null
+++ b/src/types/number.h
@@ -0,0 +1,63 @@
+/*******************************************************************************
+ Copyright (c) 2016, Michael Wallner <mike@php.net>.
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
+
+     * Redistributions of source code must retain the above copyright notice,
+       this list of conditions and the following disclaimer.
+     * Redistributions in binary form must reproduce the above copyright
+       notice, this list of conditions and the following disclaimer in the
+       documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
+ FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*******************************************************************************/
+
+#ifndef PSI_TYPES_NUMBER_H
+#define PSI_TYPES_NUMBER_H
+
+
+struct psi_data;
+struct psi_token;
+struct psi_impl;
+struct psi_const;
+struct psi_decl_enum_item;
+struct psi_let_exp;
+struct psi_set_exp;
+struct psi_call_frame;
+
+struct psi_number {
+       struct psi_token *token;
+       token_t type;
+       union {
+               char *numb;
+               impl_val ival;
+               struct psi_const *cnst;
+               struct psi_decl_var *dvar;
+               struct psi_decl_enum_item *enm;
+       } data;
+};
+
+struct psi_number *psi_number_init(token_t t, void *num);
+struct psi_number *psi_number_copy(struct psi_number *exp);
+void psi_number_free(struct psi_number **exp_ptr);
+void psi_number_dump(int fd, struct psi_number *exp);
+
+bool psi_number_validate(struct psi_data *data, struct psi_number *exp,
+               struct psi_impl *impl, struct psi_decl *cb_decl,
+               struct psi_let_exp *current_let, struct psi_set_exp *current_set,
+               struct psi_decl_enum *current_enum);
+
+token_t psi_number_eval(struct psi_number *exp, impl_val *res, struct psi_call_frame *frame);
+
+#endif