##// END OF EJS Templates
fixed promise chaining behavior, the error handler doesn't handle result or cancellation handlers exceptions these exceptions are propagated to the next handlers.
fixed promise chaining behavior, the error handler doesn't handle result or cancellation handlers exceptions these exceptions are propagated to the next handlers.

File last commit:

r178:d5c5db0335ee ref20160224
r196:40d7fed4a09e default
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Token.cs
63 lines | 1.7 KiB | text/x-csharp | CSharpLexer
cin
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r162 using Implab;
using System;
using System.Linq;
namespace Implab.Automaton.RegularExpressions {
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r177 public abstract class Token {
public abstract void Accept(IVisitor visitor);
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r162
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working on JSON parser
r178 public Token End() {
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r177 return Cat(new EndToken());
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r162 }
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r177 public Token Tag<TTag>(TTag tag) {
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r162 return Cat(new EndToken<TTag>(tag));
}
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r177 public Token Cat(Token right) {
return new CatToken(this, right);
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r162 }
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r177 public Token Or(Token right) {
return new AltToken(this, right);
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r162 }
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r177 public Token Optional() {
return Or(new EmptyToken());
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r162 }
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r177 public Token EClosure() {
return new StarToken(this);
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r162 }
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r177 public Token Closure() {
return Cat(new StarToken(this));
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r162 }
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r177 public Token Repeat(int count) {
Token token = null;
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for (int i = 0; i < count; i++)
token = token != null ? token.Cat(this) : this;
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r177 return token ?? new EmptyToken();
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r162 }
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r177 public Token Repeat(int min, int max) {
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r162 if (min > max || min < 1)
throw new ArgumentOutOfRangeException();
var token = Repeat(min);
for (int i = min; i < max; i++)
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r165 token = token.Cat( Optional() );
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r162 return token;
}
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r177 public static Token New(params int[] set) {
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r162 Safe.ArgumentNotNull(set, "set");
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r177 Token token = null;
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r162 foreach(var c in set.Distinct())
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r177 token = token == null ? new SymbolToken(c) : token.Or(new SymbolToken(c));
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r162 return token;
}
}
}