Added Sieve parser code in master

dev/Sieve/Extensions/rfc5232.js

@@ -0,0 +1,94 @@
+/**
+ * https://tools.ietf.org/html/rfc5232
+ */
+
+import {
+	GrammarCommand,
+	GrammarQuotedString,
+	GrammarString,
+	GrammarStringList,
+	GrammarTest
+} from 'Sieve/Grammar';
+
+class FlagCommand extends GrammarCommand
+{
+	constructor()
+	{
+		super();
+		this._variablename = new GrammarQuotedString;
+		this.list_of_flags = new GrammarStringList;
+	}
+
+	get require() { return 'imap4flags'; }
+
+	toString()
+	{
+		return this.identifier + ' ' + this._variablename + ' ' + this.list_of_flags.toString() + ';';
+	}
+
+	get variablename()
+	{
+		return this._variablename.value;
+	}
+
+	set variablename(value)
+	{
+		this._variablename.value = value;
+	}
+
+	pushArguments(args)
+	{
+		if (args[1]) {
+			if (args[0] instanceof GrammarQuotedString) {
+				this._variablename = args[0];
+			}
+			if (args[1] instanceof GrammarString) {
+				this.list_of_flags = args[1];
+			}
+		} else if (args[0] instanceof GrammarString) {
+			this.list_of_flags = args[0];
+		}
+	}
+}
+
+export class SetFlagCommand extends FlagCommand
+{
+}
+
+export class AddFlagCommand extends FlagCommand
+{
+}
+
+export class RemoveFlagCommand extends FlagCommand
+{
+}
+
+export class HasFlagCommand extends GrammarTest
+{
+	constructor()
+	{
+		super();
+		this.variable_list = new GrammarStringList;
+		this.list_of_flags = new GrammarStringList;
+	}
+
+	get require() { return 'imap4flags'; }
+
+	toString()
+	{
+		return 'hasflag'
+			+ ' ' + this.match_type
+			+ (this.comparator ? ' :comparator ' + this.comparator : '')
+			+ ' ' + this.variable_list.toString()
+			+ ' ' + this.list_of_flags.toString();
+	}
+
+	pushArguments(args)
+	{
+		args.forEach((arg, i) => {
+			if (arg instanceof GrammarStringList || arg instanceof GrammarString) {
+				this[args[i+1] ? 'variable_list' : 'list_of_flags'] = arg;
+			}
+		});
+	}
+}