69 lines
2.6 KiB
TypeScript
69 lines
2.6 KiB
TypeScript
import {isPresent} from '../src/facade/lang';
|
|
|
|
import {ParseSourceSpan} from './parse_util';
|
|
|
|
export interface HtmlAst {
|
|
sourceSpan: ParseSourceSpan;
|
|
visit(visitor: HtmlAstVisitor, context: any): any;
|
|
}
|
|
|
|
export class HtmlTextAst implements HtmlAst {
|
|
constructor(public value: string, public sourceSpan: ParseSourceSpan) {}
|
|
visit(visitor: HtmlAstVisitor, context: any): any { return visitor.visitText(this, context); }
|
|
}
|
|
|
|
export class HtmlExpansionAst implements HtmlAst {
|
|
constructor(public switchValue: string, public type: string, public cases: HtmlExpansionCaseAst[],
|
|
public sourceSpan: ParseSourceSpan, public switchValueSourceSpan: ParseSourceSpan) {}
|
|
visit(visitor: HtmlAstVisitor, context: any): any {
|
|
return visitor.visitExpansion(this, context);
|
|
}
|
|
}
|
|
|
|
export class HtmlExpansionCaseAst implements HtmlAst {
|
|
constructor(public value: string, public expression: HtmlAst[],
|
|
public sourceSpan: ParseSourceSpan, public valueSourceSpan: ParseSourceSpan,
|
|
public expSourceSpan: ParseSourceSpan) {}
|
|
|
|
visit(visitor: HtmlAstVisitor, context: any): any {
|
|
return visitor.visitExpansionCase(this, context);
|
|
}
|
|
}
|
|
|
|
export class HtmlAttrAst implements HtmlAst {
|
|
constructor(public name: string, public value: string, public sourceSpan: ParseSourceSpan) {}
|
|
visit(visitor: HtmlAstVisitor, context: any): any { return visitor.visitAttr(this, context); }
|
|
}
|
|
|
|
export class HtmlElementAst implements HtmlAst {
|
|
constructor(public name: string, public attrs: HtmlAttrAst[], public children: HtmlAst[],
|
|
public sourceSpan: ParseSourceSpan, public startSourceSpan: ParseSourceSpan,
|
|
public endSourceSpan: ParseSourceSpan) {}
|
|
visit(visitor: HtmlAstVisitor, context: any): any { return visitor.visitElement(this, context); }
|
|
}
|
|
|
|
export class HtmlCommentAst implements HtmlAst {
|
|
constructor(public value: string, public sourceSpan: ParseSourceSpan) {}
|
|
visit(visitor: HtmlAstVisitor, context: any): any { return visitor.visitComment(this, context); }
|
|
}
|
|
|
|
export interface HtmlAstVisitor {
|
|
visitElement(ast: HtmlElementAst, context: any): any;
|
|
visitAttr(ast: HtmlAttrAst, context: any): any;
|
|
visitText(ast: HtmlTextAst, context: any): any;
|
|
visitComment(ast: HtmlCommentAst, context: any): any;
|
|
visitExpansion(ast: HtmlExpansionAst, context: any): any;
|
|
visitExpansionCase(ast: HtmlExpansionCaseAst, context: any): any;
|
|
}
|
|
|
|
export function htmlVisitAll(visitor: HtmlAstVisitor, asts: HtmlAst[], context: any = null): any[] {
|
|
var result = [];
|
|
asts.forEach(ast => {
|
|
var astResult = ast.visit(visitor, context);
|
|
if (isPresent(astResult)) {
|
|
result.push(astResult);
|
|
}
|
|
});
|
|
return result;
|
|
}
|