comparison: variables.cxx
variables.cxx
- changeset 67
- 0a202714eea4
- parent 36
- a8838b5f1213
equal
deleted
inserted
replaced
| 66:4fc1ec88aa41 | 67:0a202714eea4 |
|---|---|
| 41 #define __VARIABLES_CXX__ | 41 #define __VARIABLES_CXX__ |
| 42 #include <stdio.h> | 42 #include <stdio.h> |
| 43 #include <stdlib.h> | 43 #include <stdlib.h> |
| 44 #include <string.h> | 44 #include <string.h> |
| 45 #include "common.h" | 45 #include "common.h" |
| 46 #include "array.h" | |
| 46 #include "bots.h" | 47 #include "bots.h" |
| 47 #include "botcommands.h" | 48 #include "botcommands.h" |
| 48 #include "objwriter.h" | 49 #include "objwriter.h" |
| 49 #include "stringtable.h" | 50 #include "stringtable.h" |
| 50 #include "variables.h" | 51 #include "variables.h" |
| 51 #include "scriptreader.h" | 52 #include "scriptreader.h" |
| 52 | 53 |
| 53 ScriptVar* g_GlobalVariables[MAX_SCRIPT_VARIABLES]; | 54 array<ScriptVar> g_GlobalVariables; |
| 54 ScriptVar* g_LocalVariable; | 55 array<ScriptVar> g_LocalVariables; |
| 55 | |
| 56 void InitVariables () { | |
| 57 unsigned int u; | |
| 58 ITERATE_GLOBAL_VARS (u) | |
| 59 g_GlobalVariables[u] = NULL; | |
| 60 } | |
| 61 | 56 |
| 62 // ============================================================================ | 57 // ============================================================================ |
| 63 // Tries to declare a new global-scope variable. Returns pointer | 58 // Tries to declare a new global-scope variable. Returns pointer |
| 64 // to new global variable, NULL if declaration failed. | 59 // to new global variable, NULL if declaration failed. |
| 65 ScriptVar* DeclareGlobalVariable (ScriptReader* r, str name) { | 60 ScriptVar* DeclareGlobalVariable (ScriptReader* r, type_e type, str name) { |
| 66 // Check that the name is valid | 61 // Unfortunately the VM does not support string variables so yeah. |
| 62 if (type == TYPE_STRING) | |
| 63 r->ParserError ("variables cannot be string\n"); | |
| 64 | |
| 65 // Check that the variable is valid | |
| 67 if (FindCommand (name)) | 66 if (FindCommand (name)) |
| 68 r->ParserError ("name of variable-to-be `%s` conflicts with that of a command", name.chars()); | 67 r->ParserError ("name of variable-to-be `%s` conflicts with that of a command", name.chars()); |
| 69 | 68 |
| 70 if (IsKeyword (name)) | 69 if (IsKeyword (name)) |
| 71 r->ParserError ("name of variable-to-be `%s` is a keyword", name.chars()); | 70 r->ParserError ("name of variable-to-be `%s` is a keyword", name.chars()); |
| 72 | 71 |
| 73 // Find a NULL pointer to a global variable | 72 if (g_GlobalVariables.size() >= MAX_SCRIPT_VARIABLES) |
| 74 ScriptVar* g; | |
| 75 unsigned int u = 0; | |
| 76 ITERATE_GLOBAL_VARS (u) { | |
| 77 // Check that it doesn't exist already | |
| 78 if (!g_GlobalVariables[u]) | |
| 79 break; | |
| 80 | |
| 81 if (!g_GlobalVariables[u]->name.icompare (name)) | |
| 82 r->ParserError ("attempted redeclaration of variable `%s`", name.chars()); | |
| 83 } | |
| 84 | |
| 85 if (u == MAX_SCRIPT_VARIABLES) | |
| 86 r->ParserError ("too many global variables!"); | 73 r->ParserError ("too many global variables!"); |
| 87 | 74 |
| 88 g = new ScriptVar; | 75 for (uint i = 0; i < g_GlobalVariables.size(); i++) |
| 89 g->index = u; | 76 if (g_GlobalVariables[i].name == name) |
| 90 g->name = name; | 77 r->ParserError ("attempted redeclaration of global variable `%s`", name.chars()); |
| 91 g->statename = ""; | |
| 92 g->next = NULL; | |
| 93 g->value = 0; | |
| 94 | 78 |
| 95 g_GlobalVariables[u] = g; | 79 ScriptVar g; |
| 96 return g; | 80 g.index = g_GlobalVariables.size(); |
| 81 g.name = name; | |
| 82 g.statename = ""; | |
| 83 g.value = 0; | |
| 84 g.type = type; | |
| 85 | |
| 86 g_GlobalVariables << g; | |
| 87 return &g_GlobalVariables[g.index]; | |
| 97 } | 88 } |
| 98 | |
| 99 /* | |
| 100 void AssignScriptVariable (ScriptReader* r, str name, str value) { | |
| 101 ScriptVar* g = FindScriptVariable (name); | |
| 102 if (!g) | |
| 103 r->ParserError ("global variable %s not declared", name.chars()); | |
| 104 } | |
| 105 */ | |
| 106 | 89 |
| 107 // ============================================================================ | 90 // ============================================================================ |
| 108 // Find a global variable by name | 91 // Find a global variable by name |
| 109 ScriptVar* FindGlobalVariable (str name) { | 92 ScriptVar* FindGlobalVariable (str name) { |
| 110 unsigned int u = 0; | 93 for (uint i = 0; i < g_GlobalVariables.size(); i++) { |
| 111 ITERATE_GLOBAL_VARS (u) { | 94 ScriptVar* g = &g_GlobalVariables[i]; |
| 112 ScriptVar* g = g_GlobalVariables[u]; | 95 if (g->name == name) |
| 113 if (!g) | |
| 114 return NULL; | |
| 115 | |
| 116 if (!g->name.compare (name)) | |
| 117 return g; | 96 return g; |
| 118 } | 97 } |
| 119 | 98 |
| 120 return NULL; | 99 return NULL; |
| 121 } | 100 } |
| 122 | 101 |
| 123 // ============================================================================ | 102 // ============================================================================ |
| 124 // Count all declared global variables | 103 // Count all declared global variables |
| 125 unsigned int CountGlobalVars () { | 104 uint CountGlobalVars () { |
| 126 unsigned int count = 0; | 105 return g_GlobalVariables.size(); |
| 127 unsigned int u = 0; | |
| 128 ITERATE_GLOBAL_VARS (u) { | |
| 129 if (g_GlobalVariables[u] != NULL) | |
| 130 count++; | |
| 131 } | |
| 132 return count; | |
| 133 } | 106 } |
