本文整理匯總了TypeScript中@angular/compiler-cli/src/language_services.getExpressionScope函數的典型用法代碼示例。如果您正苦於以下問題：TypeScript getExpressionScope函數的具體用法？TypeScript getExpressionScope怎麽用？TypeScript getExpressionScope使用的例子？那麽, 這裏精選的函數代碼示例或許可以為您提供幫助。
在下文中一共展示了getExpressionScope函數的2個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的TypeScript代碼示例。
示例1: findAttribute
const attributeValueSymbol = (ast: AST, inEvent: boolean = false): boolean => {
const attribute = findAttribute(info);
if (attribute) {
if (inSpan(templatePosition, spanOf(attribute.valueSpan))) {
const dinfo = diagnosticInfoFromTemplateInfo(info);
const scope = getExpressionScope(dinfo, path, inEvent);
if (attribute.valueSpan) {
const expressionOffset = attribute.valueSpan.start.offset + 1;
const result = getExpressionSymbol(
scope, ast, templatePosition - expressionOffset, info.template.query);
if (result) {
symbol = result.symbol;
span = offsetSpan(result.span, expressionOffset);
}
}
return true;
}
}
return false;
};示例2: locateSymbol
export function locateSymbol(info: TemplateInfo): SymbolInfo|undefined {
if (!info.position) return undefined;
const templatePosition = info.position - info.template.span.start;
const path = findTemplateAstAt(info.templateAst, templatePosition);
if (path.tail) {
let symbol: Symbol|undefined = undefined;
let span: Span|undefined = undefined;
const attributeValueSymbol = (ast: AST, inEvent: boolean = false): boolean => {
const attribute = findAttribute(info);
if (attribute) {
if (inSpan(templatePosition, spanOf(attribute.valueSpan))) {
const dinfo = diagnosticInfoFromTemplateInfo(info);
const scope = getExpressionScope(dinfo, path, inEvent);
if (attribute.valueSpan) {
const expressionOffset = attribute.valueSpan.start.offset + 1;
const result = getExpressionSymbol(
scope, ast, templatePosition - expressionOffset, info.template.query);
if (result) {
symbol = result.symbol;
span = offsetSpan(result.span, expressionOffset);
}
}
return true;
}
}
return false;
};
path.tail.visit(
{
visitNgContent(ast) {},
visitEmbeddedTemplate(ast) {},
visitElement(ast) {
const component = ast.directives.find(d => d.directive.isComponent);
if (component) {
symbol = info.template.query.getTypeSymbol(component.directive.type.reference);
symbol = symbol && new OverrideKindSymbol(symbol, 'component');
span = spanOf(ast);
} else {
// Find a directive that matches the element name
const directive = ast.directives.find(
d => d.directive.selector != null && d.directive.selector.indexOf(ast.name) >= 0);
if (directive) {
symbol = info.template.query.getTypeSymbol(directive.directive.type.reference);
symbol = symbol && new OverrideKindSymbol(symbol, 'directive');
span = spanOf(ast);
}
}
},
visitReference(ast) {
symbol = ast.value && info.template.query.getTypeSymbol(tokenReference(ast.value));
span = spanOf(ast);
},
visitVariable(ast) {},
visitEvent(ast) {
if (!attributeValueSymbol(ast.handler, /* inEvent */ true)) {
symbol = findOutputBinding(info, path, ast);
symbol = symbol && new OverrideKindSymbol(symbol, 'event');
span = spanOf(ast);
}
},
visitElementProperty(ast) { attributeValueSymbol(ast.value); },
visitAttr(ast) {},
visitBoundText(ast) {
const expressionPosition = templatePosition - ast.sourceSpan.start.offset;
if (inSpan(expressionPosition, ast.value.span)) {
const dinfo = diagnosticInfoFromTemplateInfo(info);
const scope = getExpressionScope(dinfo, path, /* includeEvent */ false);
const result =
getExpressionSymbol(scope, ast.value, expressionPosition, info.template.query);
if (result) {
symbol = result.symbol;
span = offsetSpan(result.span, ast.sourceSpan.start.offset);
}
}
},
visitText(ast) {},
visitDirective(ast) {
symbol = info.template.query.getTypeSymbol(ast.directive.type.reference);
span = spanOf(ast);
},
visitDirectiveProperty(ast) {
if (!attributeValueSymbol(ast.value)) {
symbol = findInputBinding(info, path, ast);
span = spanOf(ast);
}
}
},
null);
if (symbol && span) {
return {symbol, span: offsetSpan(span, info.template.span.start)};
}
}
}