summaryrefslogtreecommitdiff
path: root/src
diff options
context:
space:
mode:
authorFlavioJS <FlavioJS@54d463be-8e91-2dee-dedb-b68131a5f0ec>2007-02-24 11:59:32 +0000
committerFlavioJS <FlavioJS@54d463be-8e91-2dee-dedb-b68131a5f0ec>2007-02-24 11:59:32 +0000
commit0c584734dc8d4feb5390938671f6f88d9d87b39c (patch)
tree64397c5a057d755e799dade8f88a1667fd5602e1 /src
parent4a6ccdebfb5179bc000215b70dc38c91717838de (diff)
downloadhercules-0c584734dc8d4feb5390938671f6f88d9d87b39c.tar.gz
hercules-0c584734dc8d4feb5390938671f6f88d9d87b39c.tar.bz2
hercules-0c584734dc8d4feb5390938671f6f88d9d87b39c.tar.xz
hercules-0c584734dc8d4feb5390938671f6f88d9d87b39c.zip
- Minor cleanup/documentation on the script engine.
git-svn-id: https://rathena.svn.sourceforge.net/svnroot/rathena/trunk@9909 54d463be-8e91-2dee-dedb-b68131a5f0ec
Diffstat (limited to 'src')
-rw-r--r--src/map/script.c94
1 files changed, 65 insertions, 29 deletions
diff --git a/src/map/script.c b/src/map/script.c
index e3341d546..bc2b175f8 100644
--- a/src/map/script.c
+++ b/src/map/script.c
@@ -201,12 +201,43 @@ int mapreg_setreg(int num,int val);
int mapreg_setregstr(int num,const char *str);
enum c_op {
- C_NOP,C_POS,C_INT,C_PARAM,C_FUNC,C_STR,C_CONSTSTR,C_ARG,
- C_NAME,C_EOL, C_RETINFO,
- C_USERFUNC, C_USERFUNC_POS, // user defined functions
-
- C_OP3,C_LOR,C_LAND,C_LE,C_LT,C_GE,C_GT,C_EQ,C_NE, //operator
- C_XOR,C_OR,C_AND,C_ADD,C_SUB,C_MUL,C_DIV,C_MOD,C_NEG,C_LNOT,C_NOT,C_R_SHIFT,C_L_SHIFT
+ C_NOP,
+ C_POS,
+ C_INT, // number
+ C_PARAM, // parameter variable (see pc_readparam/pc_setparam)
+ C_FUNC, // buildin function call
+ C_STR, // string (free'd automatically)
+ C_CONSTSTR, // string (not free'd)
+ C_ARG, // start of argument list
+ C_NAME,
+ C_EOL, // end of line (extra stack values are cleared)
+ C_RETINFO,
+ C_USERFUNC, // internal script function
+ C_USERFUNC_POS, // internal script function label
+
+ // operators
+ C_OP3, // a ? b : c
+ C_LOR, // a || b
+ C_LAND, // a && b
+ C_LE, // a <= b
+ C_LT, // a < b
+ C_GE, // a >= b
+ C_GT, // a > b
+ C_EQ, // a == b
+ C_NE, // a != b
+ C_XOR, // a ^ b
+ C_OR, // a | b
+ C_AND, // a & b
+ C_ADD, // a + b
+ C_SUB, // a - b
+ C_MUL, // a * b
+ C_DIV, // a / b
+ C_MOD, // a % b
+ C_NEG, // - a
+ C_LNOT, // ! a
+ C_NOT, // ~ a
+ C_R_SHIFT, // a << b
+ C_L_SHIFT // a >> b
};
enum {
@@ -981,7 +1012,8 @@ const char* parse_curly_close(const char* p) {
// 構文関連の処理
// break, case, continue, default, do, for, function,
// if, switch, while をこの内部で処理します。
-const char* parse_syntax(const char* p) {
+const char* parse_syntax(const char* p)
+{
const char *p2 = skip_word(p);
switch(*p) {
@@ -1264,43 +1296,47 @@ const char* parse_syntax(const char* p) {
l=add_str(label);
set_label(l,script_pos,p);
return p;
- } else if(p2 - p == 8 && !strncasecmp(p,"function",8)) {
+ }
+ else if( p2 - p == 8 && strncasecmp(p,"function",8) == 0 )
+ {// internal script function
const char *func_name;
- // function
- p=skip_space(p2);
- if(p == p2)
- disp_error_message("parse_syntax: expect space ' '",p);
- // function - name
- func_name = p;
- p=skip_word(p);
- if(*skip_space(p) == ';') {
- // 関数の宣言 - 名前を登録して終わり
+
+ func_name = skip_space(p2);
+ p = skip_word(func_name);
+ if( p == func_name )
+ disp_error_message("parse_syntax:function: function name is missing or invalid", p);
+ if( *skip_space(p) == ';' )
+ {// function <name> ;
+ // function declaration - just register the name
int l;
- l=add_word(func_name);
- if(str_data[l].type == C_NOP)
+ l = add_word(func_name);
+ if( str_data[l].type == C_NOP )//## ??? [FlavioJS]
str_data[l].type = C_USERFUNC;
return skip_space(p) + 1;
- } else {
- // 関数の中身
+ }
+ else
+ {// function <name> <line/block of code>
char label[256];
int l;
+
syntax.curly[syntax.curly_count].type = TYPE_USERFUNC;
syntax.curly[syntax.curly_count].count = 1;
syntax.curly[syntax.curly_count].index = syntax.index++;
syntax.curly[syntax.curly_count].flag = 0;
- syntax.curly_count++;
+ ++syntax.curly_count;
- // 関数終了まで飛ばす
- sprintf(label,"goto __FN%x_FIN;",syntax.curly[syntax.curly_count-1].index);
- syntax.curly[syntax.curly_count++].type = TYPE_NULL;
+ // Jump over the function code
+ sprintf(label, "goto __FN%x_FIN;", syntax.curly[syntax.curly_count-1].index);
+ syntax.curly[syntax.curly_count].type = TYPE_NULL;
+ ++syntax.curly_count;
parse_line(label);
- syntax.curly_count--;
+ --syntax.curly_count;
- // 関数名のラベルを付ける
+ // Set the position of the function (label)
l=add_word(func_name);
- if(str_data[l].type == C_NOP)
+ if( str_data[l].type == C_NOP )//## ??? [FlavioJS]
str_data[l].type = C_USERFUNC;
- set_label(l,script_pos,p);
+ set_label(l, script_pos, p);
if( parse_options&SCRIPT_USE_LABEL_DB )
strdb_put(scriptlabel_db, GETSTRING(str_data[l].str), (void*)script_pos);
return skip_space(p);