double x;
x = 5;
x = 5.13143;
x = 1.531e5;
x = 0.3813e-7;
Real literals
September 28, 2005 12:25 PM
Suppose I declare a variable of double (or float).
September 28, 2005 02:10 PM
It should work, at least it was implemented to work. I'll need to look into it.
I seem to remember that you mentioned that you're using Deyja's preprocessor. If so, please verify that AngelScript really receives the real number as one token.
I seem to remember that you mentioned that you're using Deyja's preprocessor. If so, please verify that AngelScript really receives the real number as one token.
AngelCode.com - game development and more - Reference DB - game developer references
AngelScript - free scripting library - BMFont - free bitmap font generator - Tower - free puzzle game
920
September 28, 2005 09:00 PM
I can guarantee it doesn't! Give me a run down of exactly what this format looks like in all possible forms and I'll make it work.
September 29, 2005 09:47 AM
What AngelScript accepts is this:
Where + means 1 or more occurrances, and ? means 0 or 1 occurrances.
Examples:
C/C++ accepts a few more variants. I know that C++ allow you to skip the 0 before the decimal point, also I believe that C++ accepts 'd' and 'D' as well as 'e' and 'E'.
[0-9]+('.'[0-9]+(('e'|'E')('-'|'+')?[0-9])?'f'?)?Where + means 1 or more occurrances, and ? means 0 or 1 occurrances.
Examples:
00.00.0f0.0e00.0e0f0.0e+0f0.0e-0f0.0E00.0E-0... etcC/C++ accepts a few more variants. I know that C++ allow you to skip the 0 before the decimal point, also I believe that C++ accepts 'd' and 'D' as well as 'e' and 'E'.
AngelCode.com - game development and more - Reference DB - game developer references
AngelScript - free scripting library - BMFont - free bitmap font generator - Tower - free puzzle game
920
September 29, 2005 06:02 PM
Ah, regexy. /\D+\.\D+[eEdD][+-]?\D+f?/
920
September 29, 2005 06:40 PM
Okay, I got it working.
In the file lex.cpp, replace the function
with
Note that, though angelscript only supports e and E, this code supports d and D as well. Angelscript will only ever see e, no matter which you actually use.
In the file lex.cpp, replace the function
static char* parseFloatingPoint(char* start, char* end, Lexem& out){ out.value += *start; while (true) { ++start; if (start == end) return start; if (!isNumber(*start)) { if (*start == 'f') //f postfix transforms literal from type double to float. { out.value += *start; return ++start; } else return start; } else { out.value += *start; } }}with
static char* parseFloatingPoint(char* start, char* end, Lexem& out){ out.value += *start; while (true) { ++start; if (start == end) return start; if (*start == 'f') //f postfix is part of float, but terminates it. { out.value += 'f'; return ++start; } if (*start == 'e' // real literal; exponent follows. || *start == 'E' || *start == 'd' || *start == 'D') { out.value += 'e'; ++start; if (start == end) return start; if (*start == '-' || *start == '+' || isNumber(*start)) { out.value += *start; } else return start; while (true) { ++start; if (start == end) return start; if (*start == 'f') { out.value += 'f'; return ++start; } if (!isNumber(*start)) return start; out.value += *start; } } if (!isNumber(*start)) return start; out.value += *start; }}Note that, though angelscript only supports e and E, this code supports d and D as well. Angelscript will only ever see e, no matter which you actually use.
920
September 29, 2005 07:03 PM
Just to clear up why this sort of thing happens in the first place; my preprocessor tends to produce output like this..
Just enough whitespace to keep the meaning of the program from changing, and still give helpfull error messages. What happened was '0.0e0f' was changed to '0.0 e 0 f', because the preprocessor thought that the e was an identifier, the 0 was a whole new number, and the f was another identifier.
void cml_player_command(){string cp=GetParameterString();string cw=PopFirstWord(cp);Object player=GetActiveObject();Object room;GetObject(room,Location(player));Send(GetActiveObject(),"<Debug command parsing. ");while(true){Send(GetActiveObject(),"[Looking for command '"+cw+"'. ");if(cp.length()==0&&HasKey(player,"$player_command_"+cw)){Send(GetActiveObject(),"Found on player.]\n");AsyncCall(GetValue(player,"$player_command_"+cw),player,player,cp);return;}else if(cp.length()>0&&HasKey(player,"$player_string_command_"+cw)){Send(GetActiveObject(),"Found on player.]\n");AsyncCall(GetValue(player,"$player_string_command_"+cw),player,player,cp);return;}else if(cp.length()==0&&HasKey(room,"$world_command_"+cw)){Send(GetActiveObject(),"Found on room.]\n");AsyncCall(GetValue(room,"$world_command_"+cw),player,room,cp);return;}else if(cp.length()>0&&HasKey(room,"$world_string_command_"+cw)){Send(GetActiveObject(),"Found on room.]\n");AsyncCall(GetValue(room,"$world_string_command_"+cw),player,room,cp);return;}string rest;Object obj;if(ml_parse_object_ex(cp,player,rest,obj,0,false)){Send(GetActiveObject(),"[Found matching object.]");if(rest.length()==0&&Location(obj)==GetName(player)&&HasKey(obj,"$INVENTORY_COMMAND_"+cw)){Send(GetActiveObject()," Found in inventory.]\n");AsyncCall(GetValue(obj,"$inventory_command_"+cw),player,obj,rest);return;}else if(rest.length()>0&&Location(obj)==GetName(player)&&HasKey(obj,"$INVENTORY_STRING_COMMAND_"+cw)){Send(GetActiveObject()," Found in inventory.]\n");AsyncCall(GetValue(obj,"$inventory_STRING_command_"+cw),player,obj,rest);return;}else if(rest.length()==0&&HasKey(obj,"$ROOM_COMMAND_"+cw)){Send(GetActiveObject()," Found in room.]\n");AsyncCall(GetValue(obj,"$room_command_"+cw),player,obj,rest);return;}else if(rest.length()>0&&HasKey(obj,"$ROOM_STRING_COMMAND_"+cw)){Send(GetActiveObject()," Found in room.]\n");AsyncCall(GetValue(obj,"$room_STRING_command_"+cw),player,obj,rest);return;}}Send(GetActiveObject()," Command Not Found.]");string co=PopFirstWord(cp);if(co.length()==0){Send(GetActiveObject(),"\nHuh?\n");return;}cw+="_"+co;}}Just enough whitespace to keep the meaning of the program from changing, and still give helpfull error messages. What happened was '0.0e0f' was changed to '0.0 e 0 f', because the preprocessor thought that the e was an identifier, the 0 was a whole new number, and the f was another identifier.
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