Regular Expression support (regex)

hscript/Expr.hx

@@ -34,7 +34,7 @@ typedef UInt64 = #if cpp cpp.UInt64 #else Int #end;
 enum Const {
 	CInt( v : Int );
 	CFloat( f : Float );
-	CString( s : String, ?i : Bool );
+	CString( s : String );
 }
 
 #if hscriptPos

hscript/Parser.hx

@@ -340,7 +340,7 @@ class Parser {
 					if( !allowJSON )
 						unexpected(tk);
 					switch( c ) {
-						case CString(s, _): id = s;
+						case CString(s): id = s;
 						default: unexpected(tk);
 					}
 				case TBrClose:
@@ -377,11 +377,6 @@ class Parser {
 				e = mk(EIdent(id));
 			return parseExprNext(e);
 		case TConst(c):
-			switch(c) {
-				case CString(s, i):
-					if(i) return parseExprNext(interpolateString(s));
-				default:
-			}
 			return parseExprNext(mk(EConst(c)));
 		case TPOpen:
 			tk = token();
@@ -1644,94 +1639,6 @@ class Parser {
 		return args;
 	}
 
-	// From hscript-iris: https://github.com/pisayesiwsi/hscript-iris/blob/dev/crowplexus/hscript/Parser.hx#L409
-	// by inky03
-	function interpolateString(s:String):Expr {
-		var exprs:Array<Expr> = [];
-		var dollarPos:Int = s.indexOf('$');
-
-		if(dollarPos == -1)
-			return mk(EConst(CString(s)));
-
-		final singleFirst:EReg = ~/[a-zA-Z_]/i;
-		final singleExpr:EReg = ~/[a-zA-Z0-9_]/i;
-		// TODO: optimize this using regex
-		while(dollarPos > -1) {
-			var pos:Int = dollarPos;
-			var pre:String = s.substr(0, pos);
-			var next:String = s.charAt(++pos);
-			if(next == '{') {
-				if (pre != '')
-					exprs.push(mk(EConst(CString(pre))));
-				var exprStr:String = '';
-				var depth:Int = 1;
-				while (true) {
-					next = s.charAt(++pos);
-					if (next == '{') {
-						depth++;
-					} else if (next == '}') {
-						depth--;
-					}
-					if (depth < 1)
-						break;
-					if (pos >= s.length) {
-						error(EUnterminatedString, pos, pos);
-					}
-					exprStr += next;
-				}
-				if (exprStr.trim() == '') {
-					error(ECustom("Expression cannot be empty"), pos, pos);
-				}
-				var prevChar = char;
-				var prevInput = input;
-				var prevReadPos = readPos; // a bit stupid innit???
-				#if hscriptPos
-				var prevOrigin = origin;
-				#end
-				var expr = parseString('($exprStr)' #if hscriptPos, origin #end);
-				readPos = prevReadPos; // rolling back parser state because otherwise we get problems...
-				input = prevInput;
-				char = prevChar;
-				#if hscriptPos
-				origin = prevOrigin;
-				#end
-				exprs.push(expr);
-				pos++;
-			}
-			else if(singleFirst.match(next)) {
-				if (pre != '')
-					exprs.push(mk(EConst(CString(pre))));
-				var ident: String = '';
-				while(singleExpr.match(next)) {
-					ident += next;
-					next = s.charAt(++pos);
-				}
-				exprs.push(mk(EIdent(ident)));
-			}
-			else if (next == '$') {
-				var secondToNext: String = s.charAt(pos);
-				if (secondToNext == "$") { // if its another dollar, skip...
-					s = pre + s.substr(pos, pos + 1); // remove $ ahead of the current one
-					break;
-				}
-				exprs.push(mk(EConst(CString(pre + '$'))));
-			}
-			s = s.substr(pos++);
-			dollarPos = s.indexOf('$');
-		}
-		if (exprs.length == 0) {
-			return mk(EConst(CString(s)));
-		} else {
-			exprs.push(mk(EConst(CString(s))));
-			var expr:Null<Expr> = exprs.shift();
-			while(true) {
-				if(exprs.length == 0) break;
-				expr = mk(EBinop('+', expr, exprs.shift()));
-			}
-			return expr;
-		}
-	}
-
 	function checkAccess(get:FieldPropertyAccess, set:FieldPropertyAccess, ?expr:Expr, ?type:CType) {
 		#if hscriptPos
 		var p1 = tokenMin;
@@ -1966,9 +1873,8 @@ class Parser {
 		return StringTools.fastCodeAt(input, readPos++);
 	}
 
-	function readString( until:Int, regex:Bool = false, interpolate:Bool = false ):String {
+	function readString( until:Int, regex:Bool = false ):String {
 		var c = 0;
-		var prev = 0;
 		var b = new StringBuf();
 		var esc = false;
 		var old = line;
@@ -2017,53 +1923,11 @@ class Parser {
 				}
 			} else if( c == 92 && !regex)
 				esc = true;
-			else if( c == until ) {
-				if(regex && prev == 92) {
-					b.addChar(c);
-					prev = c;
-				}
-				else
+			else if( c == until )
 				break;
-			}
-			else if (c == 36 && interpolate) { // brace for impact !!
-				// From hscript-iris: https://github.com/pisayesiwsi/hscript-iris/blob/dev/crowplexus/hscript/Parser.hx#L1665
-				// by inky03
-				// TODO: optimize this
-				b.addChar(c);
-				var next = readChar();
-				if (next == 123) {
-					b.addChar(next);
-					var depth:Int = 0;
-					while (true) {
-						next = readChar();
-						if (StringTools.isEof(next)) {
-							error(EUnterminatedString, p1, p1);
-						}
-						b.addChar(next);
-						if (next == "'".code) {
-							var nextStr:String = readString("'".code, false, true);
-							for (char in nextStr) {
-								b.addChar(char);
-							}
-							b.addChar("'".code);
-							next = readChar();
-							b.addChar(next);
-						}
-						if (next == 125) {
-							depth--;
-							if (depth < 0)
-								break;
-						}
-					}
-				} else {
-					readPos--;
-				}
-			}
 			else {
 				if( c == 10 ) line++;
 				b.addChar(c);
-				if(regex)
-					prev = c;
 			}
 		}
 		return b.toString();
@@ -2269,10 +2133,7 @@ class Parser {
 			case "}".code: return TBrClose;
 			case "[".code: return TBkOpen;
 			case "]".code: return TBkClose;
-			case "'".code:
-				return TConst( CString(readString(char, false, true), true) );
-			case '"'.code: 
-				return TConst( CString(readString(char), false) );
+			case "'".code, '"'.code: return TConst( CString(readString(char)) );
 			case "?".code:
 				char = readChar();
 				switch (char) {
@@ -2533,7 +2394,7 @@ class Parser {
 		return switch(c) {
 		case CInt(v): Std.string(v);
 		case CFloat(f): Std.string(f);
-		case CString(s, _): s; // TODO : escape + quote
+		case CString(s): s; // TODO : escape + quote
 		}
 	}
 
@@ -2557,7 +2418,7 @@ class Parser {
 		case TDoubleDot: ":";
 		case TMeta(id): "@" + id;
 		case TPrepro(id): "#" + id;
-		case TRegex(e, f): '~/$e/$f';
+		case TRegex(e, f): '~/$e/${f == null ? '' : f}';
 		}
 	}