implab/implabjs-core Files · src/main/ts/text/FormatScanner.ts

working on fluent configuration, di annotations removed

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r115:691199f665e0 ioc ts support


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ioc ts support

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             FormatScanner.ts
        
                    54 lines
            
             | 1.3 KiB
            
                | video/mp2t
            
             |
                TypeScriptLexer
            
             / src / main / ts / text / FormatScanner.ts
          
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      import { argumentNotEmptyString } from "../safe";

      import { MapOf } from "../interfaces";

      export const enum TokeType {

          CurlOpen = 1,

          CurlClose = 2,

          Colon = 3,

          Text = 4

      }

      const typeMap = {

          "{": TokeType.CurlOpen,

          "}": TokeType.CurlClose,

          ":": TokeType.Colon

      } as MapOf<TokeType>;

      export class FormatScanner {

          private _text: string;

          private _tokenType: TokeType | undefined;

          private _tokenValue: string | undefined;

          private _rx = /[^{}:]+|(.)/g;

          constructor(text: string) {

              argumentNotEmptyString(text, text);

              this._text = text;

          }

          next() {

              if (this._rx.lastIndex >= this._text.length)

                  return false;

              const match = this._rx.exec(this._text);

              if (match === null)

                  return false;

              this._tokenType = typeMap[match[1]] || TokeType.Text;

              this._tokenValue = match[0];

              return true;

          }

          getTokenValue() {

              if (this._tokenValue === undefined)

                  throw new Error("The scanner is before the first element");

              return this._tokenValue;

          }

          getTokenType() {

              if (this._tokenType === undefined)

                  throw new Error("The scanner is before the first element");

              return this._tokenType;

          }

      }

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				import { argumentNotEmptyString } from "../safe";
				import { MapOf } from "../interfaces";

				export const enum TokeType {
				CurlOpen = 1,
				CurlClose = 2,
				Colon = 3,
				Text = 4
				}

				const typeMap = {
				"{": TokeType.CurlOpen,
				"}": TokeType.CurlClose,
				":": TokeType.Colon
				} as MapOf<TokeType>;

				export class FormatScanner {
				private _text: string;
				private _tokenType: TokeType \| undefined;
				private _tokenValue: string \| undefined;
				private _rx = /[^{}:]+\|(.)/g;

				constructor(text: string) {
				argumentNotEmptyString(text, text);
				this._text = text;
				}

				next() {
				if (this._rx.lastIndex >= this._text.length)
				return false;

				const match = this._rx.exec(this._text);
				if (match === null)
				return false;

				this._tokenType = typeMap[match[1]] \|\| TokeType.Text;
				this._tokenValue = match[0];

				return true;
				}

				getTokenValue() {
				if (this._tokenValue === undefined)
				throw new Error("The scanner is before the first element");
				return this._tokenValue;
				}

				getTokenType() {

				if (this._tokenType === undefined)
				throw new Error("The scanner is before the first element");
				return this._tokenType;
				}
				}