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implab » implabjs-core
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Clone from http://hg.code.sf.net/p/implabjs/core

Working on text writer
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r81:2ac7406b138e default
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@@ -101,6 +101,11 export interface IObserver<T> {
101 101 }
102 102
103 103 export interface TextWriter {
104 formatter;
105 Write(data, format?: string);
104 Write(obj: any): void;
105 Write(format: string, ...args: any[]): void;
106
107 WriteLine(obj: any): void;
108 WriteLine(format: string, ...args: any[]): void;
109
110 WriteValue(value: any, spec?: string): void;
106 111 }
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@@ -1,53 +1,86
1 1 import { FormatScanner, TokeType } from "./FormatScanner";
2 import { isNullOrEmptyString } from "../safe";
3 import { TextWriter } from "../interfaces";
2 4
3 5 export class FormatCompiler {
6 _scanner: FormatScanner;
4 7
5 visitText(scanner: FormatScanner) {
6 while (scanner.next()) {
7 if (scanner.getTokenType() === TokeType.CurlOpen)
8 this.visitCurlOpen(scanner);
8 _parts: [];
9
10 compile() {
11 return (writer: TextWriter, args: any) => {
12 this._parts.forEach(x => writer.WriteValue(x))
13 };
14 }
15
16 visitText() {
17 while (this._scanner.next()) {
18 switch (this._scanner.getTokenType()) {
19 case TokeType.CurlOpen:
20 this.visitCurlOpen();
21 break;
22 case TokeType.CurlClose:
23 this.visitCurlClose();
24 break;
25 default:
26 this.pushText(this._scanner.getTokenValue());
27 }
28 if (this._scanner.getTokenType() === TokeType.CurlOpen)
29 this.visitCurlOpen();
9 30 }
10 31 }
11 32
12 visitCurlOpen(scanner: FormatScanner) {
13 if (scanner.next()) {
14 if (scanner.getTokenType() === TokeType.CurlOpen)
33 visitCurlClose() {
34 if (!this._scanner.next())
35 this.dieUnexpectedEnd("}");
36 if (this._scanner.getTokenType() !== TokeType.CurlClose)
37 this.dieUnexpectedToken("}");
38 this.pushText("}");
39 }
40
41 visitCurlOpen() {
42 if (this._scanner.next()) {
43 if (this._scanner.getTokenType() === TokeType.CurlOpen)
15 44 this.pushText("{");
16 45 else
17 this.visitTemplateSubst(scanner);
18
46 this.visitTemplateSubst();
19 47 }
20 48 }
21 49
22 visitTemplateSubst(scanner: FormatScanner) {
23 if (scanner.getTokenType() !== TokeType.Text)
24 this.dieUnexpectedToken(scanner);
50 visitTemplateSubst() {
51 if (this._scanner.getTokenType() !== TokeType.Text)
52 this.dieUnexpectedToken("TEXT");
25 53
26 const fieldName = scanner.getTokenValue();
27 let filedFormat: string;
28 if (this.readColon(scanner)) {
29 filedFormat = this.readFieldFormat(scanner);
30 } else {
31 if (scanner.getTokenType() !== TokeType.CurlClose)
32 this.dieUnexpectedToken(scanner);
33 }
54 const fieldName = this._scanner.getTokenValue();
55 const filedFormat = this.readColon() && this.readFieldFormat();
34 56
35 57 this.pushSubst(fieldName, filedFormat);
36 58 }
37 59
38 pushSubst(fieldName: string, filedFormat: string) {
39 throw new Error("Method not implemented.");
60 readFieldFormat() {
61 const parts = new Array<string>();
62 while (this._scanner.next()) {
63 if (this._scanner.getTokenType() === TokeType.CurlClose) {
64 return parts.join("");
65 } else {
66 parts.push(this._scanner.getTokenValue());
67 }
40 68 }
41 69
42 readFieldFormat(scanner: FormatScanner): string {
43 throw new Error("Method not implemented.");
70 this.dieUnexpectedEnd("}");
44 71 }
45 72
46 readColon(scanner: FormatScanner) {
47 if (!scanner.next())
73 readColon() {
74 if (!this._scanner.next())
48 75 this.dieUnexpectedEnd();
49 if (scanner.getTokenType() !== TokeType.Colon)
76 if (this._scanner.getTokenType() !== TokeType.Colon)
50 77 return false;
78 if (!this._scanner.next())
79 this.dieUnexpectedEnd();
80 return true;
81 }
82
83 pushSubst(fieldName: string, filedFormat: string) {
51 84
52 85 }
53 86
@@ -55,11 +88,14 export class FormatCompiler {
55 88
56 89 }
57 90
58 dieUnexpectedToken(scanner: FormatScanner) {
59 throw new Error(`Unexpected token ${scanner.getTokenValue()}`);
91 dieUnexpectedToken(expected?: string) {
92 throw new Error(isNullOrEmptyString(expected) ?
93 `Unexpected token ${this._scanner.getTokenValue()}` :
94 `Unexpected token ${this._scanner.getTokenValue()}, expected ${expected}`
95 );
60 96 }
61 97
62 dieUnexpectedEnd() {
63 throw new Error("Unexpected end of string");
98 dieUnexpectedEnd(expected?: string) {
99 throw new Error(isNullOrEmptyString(expected) ? "Unexpected end of the string" : `Unexpected end of the string, expected ${expected}`);
64 100 }
65 101 }
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