calc: boolean expressions

[m6w6/ext-psi] / scripts / gen_oper.php

diff --git a/scripts/gen_oper.php b/scripts/gen_oper.php
new file mode 100644 (file)
index 0000000..e35bc4b
--- /dev/null
+++ b/scripts/gen_oper.php
@@ -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.
+*******************************************************************************/
+
+static inline int psi_token_oper_cmp(token_t op1, token_t op2) {
+       switch (op1) {
+<?php
+
+$oper = [
+               ["NOT", "TILDE"],
+               ["ASTERISK", "SLASH", "MODULO"],
+               ["PLUS", "MINUS"],
+               ["LSHIFT", "RSHIFT"],
+               ["LCHEVR", "CMP_LE", "RCHEVR", "CMP_GE"],
+               ["AMPERSAND"],
+               ["CMP_EQ", "CMP_NE"],
+               ["CARET"],
+               ["PIPE"],
+               ["AND"],
+               ["OR"]
+];
+
+
+foreach ($oper as $prec1 => $ops1) {
+       foreach ($ops1 as $op1) {
+               printf("\tcase PSI_T_%s:\n", $op1);
+               printf("\t\tswitch (op2) {\n");
+               foreach ($oper as $prec2 => $ops2) {
+                       foreach ($ops2 as $op2) {
+                               printf("\t\t\tcase PSI_T_%s: %sreturn %2d;\n", $op2,
+                                               str_repeat(" ", 10 - strlen($op2)),
+                                               $prec1==$prec2?0:($prec1>$prec2?1:-1));
+                       }
+               }
+               printf("\t\t}\n\t\tassert(0);\n\t\tbreak;\n");
+       }
+}
+?>
+       }
+       assert(0);
+       return 0;
+}