UltimateZoneBuilder/Source/Core/Data/Scripting/ScriptHandler.cs
biwa 5eb438e3ba
Add map scripting capabilities to UDB (#656)
Added map scripting capabilities to UDB (#656). Documentation at https://biwa.github.io/udbscript-docs/
2021-11-28 14:00:24 +01:00

455 lines
15 KiB
C#
Executable file

#region ================== Namespaces
using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Text;
using System.Windows.Forms;
using CodeImp.DoomBuilder.Compilers;
using CodeImp.DoomBuilder.Config;
using CodeImp.DoomBuilder.Controls;
using CodeImp.DoomBuilder.IO;
#endregion
using ScintillaNET;
namespace CodeImp.DoomBuilder.Data.Scripting
{
[ScriptHandler(ScriptType.UNKNOWN)]
public class ScriptHandler
{
#region ================== Constants
protected const int MAX_BACKTRACK_LENGTH = 200;
#endregion
#region ================== Variables
private ScriptEditorControl scriptcontrol;
protected Scintilla scriptedit;
protected ScriptConfiguration scriptconfig;
// List of keywords and constants
private List<string> autocompletelist;
// Current position information
private string curfunctionname = "";
private int curargumentindex;
private int curfunctionstartpos;
#endregion
#region ================== Methods
public virtual void Initialize(ScriptEditorControl scriptcontrol, ScriptConfiguration scriptconfig)
{
this.scriptcontrol = scriptcontrol;
this.scriptedit = scriptcontrol.Scintilla;
this.scriptconfig = scriptconfig;
// Bind events
this.scriptedit.KeyUp += scriptedit_KeyUp;
}
//TODO: Remove ScriptDocumentTab from here
public virtual List<CompilerError> UpdateFunctionBarItems(ScriptDocumentTab tab, MemoryStream stream, ComboBox target)
{
// Unsupported script type. Just clear the items
target.Items.Clear();
return new List<CompilerError>();
}
//mxd. Autocompletion handling (https://github.com/jacobslusser/ScintillaNET/wiki/Basic-Autocompletion)
public virtual bool ShowAutoCompletionList()
{
int currentpos = scriptedit.CurrentPosition;
int wordstartpos = scriptedit.WordStartPosition(currentpos, true);
if(wordstartpos >= currentpos)
{
// Hide the list
scriptedit.AutoCCancel();
return false;
}
// Get entered text
string start = scriptedit.GetTextRange(wordstartpos, currentpos - wordstartpos);
if(string.IsNullOrEmpty(start))
{
// Hide the list
scriptedit.AutoCCancel();
return false;
}
// Don't show Auto-completion list when editing comment, include or string
switch(scriptcontrol.GetScriptStyle(scriptedit.GetStyleAt(currentpos)))
{
case ScriptStyleType.Comment:
case ScriptStyleType.String:
// Hide the list
scriptedit.AutoCCancel();
return false;
case ScriptStyleType.Include:
// Hide the list unless current word is a keyword
if(!start.StartsWith("#"))
{
scriptedit.AutoCCancel();
return false;
}
break;
}
// Filter the list
List<string> filtered = new List<string>();
foreach(string s in autocompletelist)
if(s.IndexOf(start, StringComparison.OrdinalIgnoreCase) != -1) filtered.Add(s);
// Any matches?
if(filtered.Count > 0)
{
// Show the list
scriptedit.AutoCShow(currentpos - wordstartpos, string.Join(" ", filtered.ToArray()));
return true;
}
// Hide the list
scriptedit.AutoCCancel();
return false;
}
internal void SetKeywords(Configuration lexercfg, string lexername)
{
Dictionary<string, string> autocompletedict = new Dictionary<string, string>(StringComparer.Ordinal);
// Create the keywords list and apply it
string imageindex = ((int)ScriptEditorControl.ImageIndex.ScriptKeyword).ToString(CultureInfo.InvariantCulture);
int keywordsindex = lexercfg.ReadSetting(lexername + ".keywordsindex", -1);
if(keywordsindex > -1)
{
StringBuilder keywordslist = new StringBuilder();
foreach(string k in scriptconfig.Keywords)
{
if(keywordslist.Length > 0) keywordslist.Append(" ");
keywordslist.Append(k);
//mxd. Skip adding the keyword if we have a snippet with the same name
if(!scriptconfig.Snippets.Contains(k)) autocompletedict.Add(k, k + "?" + imageindex);
}
string words = keywordslist.ToString();
scriptedit.SetKeywords(keywordsindex, (scriptconfig.CaseSensitive ? words : words.ToLowerInvariant()));
}
//mxd. Create the properties list and apply it
imageindex = ((int)ScriptEditorControl.ImageIndex.ScriptProperty).ToString(CultureInfo.InvariantCulture);
int propertiesindex = lexercfg.ReadSetting(lexername + ".propertiesindex", -1);
if(propertiesindex > -1)
{
StringBuilder propertieslist = new StringBuilder();
HashSet<string> addedprops = new HashSet<string>();
char[] dot = { '.' };
foreach(string p in scriptconfig.Properties)
{
if(propertieslist.Length > 0) propertieslist.Append(" ");
// Scintilla doesn't highlight keywords with '.' or ':', so get rid of those
if(scriptconfig.ScriptType == ScriptType.DECORATE)
{
string prop = p;
if(prop.Contains(":")) prop = prop.Replace(":", string.Empty);
if(prop.Contains("."))
{
// Split dotted properties into separate entries
string[] parts = prop.Split(dot, StringSplitOptions.RemoveEmptyEntries);
List<string> result = new List<string>();
foreach(string part in parts)
{
if(!addedprops.Contains(part))
{
result.Add(part);
addedprops.Add(part);
}
}
if(result.Count > 0) propertieslist.Append(string.Join(" ", result.ToArray()));
}
else
{
addedprops.Add(prop);
propertieslist.Append(prop);
}
}
else
{
propertieslist.Append(p);
}
// Autocomplete doesn't mind '.' or ':'
// Skip adding the keyword if we have a snippet with the same name
if(!scriptconfig.Snippets.Contains(p))
{
if(autocompletedict.ContainsKey(p))
General.ErrorLogger.Add(ErrorType.Warning, "Property \"" + p + "\" is double defined in \"" + scriptconfig.Description + "\" script configuration.");
else
autocompletedict.Add(p, p + "?" + imageindex);
}
}
string words = propertieslist.ToString();
scriptedit.SetKeywords(propertiesindex, (scriptconfig.CaseSensitive ? words : words.ToLowerInvariant()));
}
// Create the constants list and apply it
imageindex = ((int)ScriptEditorControl.ImageIndex.ScriptConstant).ToString(CultureInfo.InvariantCulture);
int constantsindex = lexercfg.ReadSetting(lexername + ".constantsindex", -1);
if(constantsindex > -1)
{
StringBuilder constantslist = new StringBuilder();
foreach(string c in scriptconfig.Constants)
{
if(autocompletedict.ContainsKey(c))
continue; //mxd. This happens when there's a keyword and a constant with the same name...
if(constantslist.Length > 0) constantslist.Append(" ");
constantslist.Append(c);
//mxd. Skip adding the constant if we have a snippet with the same name
if(!scriptconfig.Snippets.Contains(c)) autocompletedict.Add(c, c + "?" + imageindex);
}
string words = constantslist.ToString();
scriptedit.SetKeywords(constantsindex, (scriptconfig.CaseSensitive ? words : words.ToLowerInvariant()));
}
//mxd. Create the snippets list and apply it
imageindex = ((int)ScriptEditorControl.ImageIndex.ScriptSnippet).ToString(CultureInfo.InvariantCulture);
int snippetindex = lexercfg.ReadSetting(lexername + ".snippetindex", -1);
if(snippetindex > -1 && scriptconfig.Snippets.Count > 0)
{
StringBuilder snippetslist = new StringBuilder();
foreach(string s in scriptconfig.Snippets)
{
if(snippetslist.Length > 0) snippetslist.Append(" ");
snippetslist.Append(s);
autocompletedict.Add(s, s + "?" + imageindex);
}
string words = snippetslist.ToString();
scriptedit.SetKeywords(snippetindex, (scriptconfig.CaseSensitive ? words : words.ToLowerInvariant()));
}
// Make autocomplete list
autocompletelist = new List<string>(autocompletedict.Values);
}
// This gathers information about the current caret position
protected void UpdatePositionInfo()
{
int bracketlevel = 0; // bracket level counting
int argindex = 0; // function argument counting
int pos = scriptedit.CurrentPosition;
// Get the text
string scripttext = scriptedit.Text;
// Reset position info
curfunctionname = "";
curargumentindex = 0;
curfunctionstartpos = 0;
// Determine lowest backtrack position
int limitpos = Math.Max(0, scriptedit.CurrentPosition - MAX_BACKTRACK_LENGTH);
// We can only do this when we have function syntax information
if((scriptconfig.ArgumentDelimiter.Length == 0) || (scriptconfig.FunctionClose.Length == 0) ||
(scriptconfig.FunctionOpen.Length == 0) || (scriptconfig.Terminator.Length == 0))
return;
// Get int versions of the function syntax informantion
int argumentdelimiter = scriptconfig.ArgumentDelimiter[0];
int functionclose = scriptconfig.FunctionClose[0];
int functionopen = scriptconfig.FunctionOpen[0];
int terminator = scriptconfig.Terminator[0];
// Continue backtracking until we reached the limitpos
while(pos >= limitpos)
{
// Backtrack 1 character
pos--;
// Get the style and character at this position
ScriptStyleType curstyle = scriptcontrol.GetScriptStyle(scriptedit.GetStyleAt(pos));
int curchar = scriptedit.GetCharAt(pos);
// Then meeting ) then increase bracket level
// When meeting ( then decrease bracket level
// When bracket level goes -1, then the next word should be the function name
// Only when at bracket level 0, count the comma's for argument index
// TODO:
// Original code checked for scope character here and breaks if found
// Check if in plain text or keyword
if((curstyle == ScriptStyleType.PlainText) || (curstyle == ScriptStyleType.Keyword))
{
// Closing bracket
if(curchar == functionclose)
{
bracketlevel++;
}
// Opening bracket
else if(curchar == functionopen)
{
bracketlevel--;
// Out of the brackets?
if(bracketlevel < 0)
{
// Skip any whitespace before this bracket
do
{
// Backtrack 1 character
curchar = scriptedit.GetCharAt(--pos);
}
while((pos >= limitpos) && ((curchar == ' ') || (curchar == '\t') ||
(curchar == '\r') || (curchar == '\n')));
// NOTE: We may need to set onlyWordCharacters argument in the
// following calls to false to get any argument delimiter included,
// but this may also cause a valid keyword to be combined with other
// surrounding characters that do not belong to the keyword.
// Find the word before this bracket
int wordstart = scriptedit.WordStartPosition(pos, true);
int wordend = scriptedit.WordEndPosition(pos, true);
string word = scripttext.Substring(wordstart, wordend - wordstart);
if(word.Length > 0)
{
// Check if this is an argument delimiter
// I can't remember why I did this, but I'll probably stumble
// upon the problem if this doesn't work right (see note above)
if(word[0] == argumentdelimiter)
{
// We are now in the parent function
bracketlevel++;
argindex = 0;
}
// Now check if this is a keyword
else if(scriptconfig.IsKeyword(word))
{
// Found it!
curfunctionname = scriptconfig.GetKeywordCase(word);
curargumentindex = argindex;
curfunctionstartpos = wordstart;
break;
}
else
{
// Don't know this word
break;
}
}
}
}
// Argument delimiter
else if(curchar == argumentdelimiter)
{
// Only count these at brackt level 0
if(bracketlevel == 0) argindex++;
}
// Terminator
else if(curchar == terminator)
{
// Can't find anything, break now
break;
}
}
}
}
#endregion
#region ================== Events
private void scriptedit_KeyUp(object sender, KeyEventArgs e)
{
bool showcalltip = false;
int highlightstart = 0;
int highlightend = 0;
UpdatePositionInfo();
// Call tip shown
if(scriptedit.CallTipActive)
{
// Should we hide the call tip?
if(curfunctionname.Length == 0)
{
// Hide the call tip
scriptedit.CallTipCancel();
}
else
{
// Update the call tip
showcalltip = true;
}
}
// No call tip
else
{
// Should we show a call tip?
showcalltip = (curfunctionname.Length > 0) && !scriptedit.AutoCActive;
}
// Show or update call tip
if(showcalltip)
{
string functiondef = scriptconfig.GetFunctionDefinition(curfunctionname);
if(functiondef != null)
{
// Determine the range to highlight
int argsopenpos = functiondef.IndexOf(scriptconfig.FunctionOpen, StringComparison.Ordinal);
int argsclosepos = functiondef.LastIndexOf(scriptconfig.FunctionClose, StringComparison.Ordinal);
if((argsopenpos > -1) && (argsclosepos > -1))
{
string argsstr = functiondef.Substring(argsopenpos + 1, argsclosepos - argsopenpos - 1);
string[] args = argsstr.Split(scriptconfig.ArgumentDelimiter[0]);
if((curargumentindex >= 0) && (curargumentindex < args.Length))
{
int argoffset = 0;
for(int i = 0; i < curargumentindex; i++) argoffset += args[i].Length + 1;
highlightstart = argsopenpos + argoffset + 1;
highlightend = highlightstart + args[curargumentindex].Length;
}
}
// Determine callip position
int tippos = curfunctionstartpos;
int funcline = scriptedit.LineFromPosition(curfunctionstartpos);
//mxd. If the tip obscures the view, move it down
if(scriptedit.CurrentLine > funcline)
{
int offset = curfunctionstartpos - scriptedit.Lines[funcline].Position;
tippos = scriptedit.Lines[scriptedit.CurrentLine].Position + offset;
}
//mxd. Take line wrapping into account
if(scriptedit.Lines[scriptedit.CurrentLine].WrapCount > 0)
{
int x = scriptedit.PointXFromPosition(tippos);
int y = scriptedit.PointYFromPosition(scriptedit.CurrentPosition);
int newtippos = scriptedit.CharPositionFromPointClose(x, y);
if(newtippos != -1) tippos = newtippos;
}
// Show tip
scriptedit.CallTipShow(tippos, functiondef);
scriptedit.CallTipSetHlt(highlightstart, highlightend);
}
}
}
#endregion
}
}