comparison: src/variables.cc
src/variables.cc
- changeset 88
- 5def6ff8b466
- parent 87
- 8f65914e7046
- child 89
- 029a330a9bef
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| 87:8f65914e7046 | 88:5def6ff8b466 |
|---|---|
| 1 /* | |
| 2 Copyright 2012-2014 Santeri Piippo | |
| 3 All rights reserved. | |
| 4 | |
| 5 Redistribution and use in source and binary forms, with or without | |
| 6 modification, are permitted provided that the following conditions | |
| 7 are met: | |
| 8 | |
| 9 1. Redistributions of source code must retain the above copyright | |
| 10 notice, this list of conditions and the following disclaimer. | |
| 11 2. Redistributions in binary form must reproduce the above copyright | |
| 12 notice, this list of conditions and the following disclaimer in the | |
| 13 documentation and/or other materials provided with the distribution. | |
| 14 3. The name of the author may not be used to endorse or promote products | |
| 15 derived from this software without specific prior written permission. | |
| 16 | |
| 17 THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | |
| 18 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |
| 19 OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |
| 20 IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
| 21 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
| 22 NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 23 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 24 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 25 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
| 26 THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 27 */ | |
| 28 | |
| 29 #include <stdio.h> | |
| 30 #include <stdlib.h> | |
| 31 #include <string.h> | |
| 32 #include "stringtable.h" | |
| 33 #include "variables.h" | |
| 34 #include "parser.h" | |
| 35 | |
| 36 list<script_variable> g_GlobalVariables; | |
| 37 list<script_variable> g_LocalVariables; | |
| 38 | |
| 39 // ============================================================================ | |
| 40 // Tries to declare a new global-scope variable. Returns pointer | |
| 41 // to new global variable, null if declaration failed. | |
| 42 script_variable* declare_global_variable (type_e type, string name) | |
| 43 { | |
| 44 // Unfortunately the VM does not support string variables so yeah. | |
| 45 if (type == e_string_type) | |
| 46 error ("variables cannot be string\n"); | |
| 47 | |
| 48 // Check that the variable is valid | |
| 49 if (find_command_by_name (name)) | |
| 50 error ("name of variable-to-be `%s` conflicts with that of a command", name.chars()); | |
| 51 | |
| 52 if (g_GlobalVariables.size() >= g_max_global_vars) | |
| 53 error ("too many global variables!"); | |
| 54 | |
| 55 for (int i = 0; i < g_GlobalVariables.size(); i++) | |
| 56 if (g_GlobalVariables[i].name == name) | |
| 57 error ("attempted redeclaration of global variable `%s`", name.chars()); | |
| 58 | |
| 59 script_variable g; | |
| 60 g.index = g_GlobalVariables.size(); | |
| 61 g.name = name; | |
| 62 g.statename = ""; | |
| 63 g.value = 0; | |
| 64 g.type = type; | |
| 65 | |
| 66 g_GlobalVariables << g; | |
| 67 return &g_GlobalVariables[g.index]; | |
| 68 } | |
| 69 | |
| 70 // ============================================================================ | |
| 71 // Find a global variable by name | |
| 72 script_variable* find_global_variable (string name) | |
| 73 { | |
| 74 for (int i = 0; i < g_GlobalVariables.size(); i++) | |
| 75 { | |
| 76 script_variable* g = &g_GlobalVariables[i]; | |
| 77 | |
| 78 if (g->name == name) | |
| 79 return g; | |
| 80 } | |
| 81 | |
| 82 return null; | |
| 83 } |
