angular2
Version:
Angular 2 - a web framework for modern web apps
83 lines • 14.1 kB
JavaScript
import { isPresent, isBlank } from 'angular2/src/facade/lang';
import { BaseException } from 'angular2/src/facade/exceptions';
import * as o from '../output/output_ast';
import { Identifiers } from '../identifiers';
export function getPropertyInView(property, callingView, definedView) {
if (callingView === definedView) {
return property;
}
else {
var viewProp = o.THIS_EXPR;
var currView = callingView;
while (currView !== definedView && isPresent(currView.declarationElement.view)) {
currView = currView.declarationElement.view;
viewProp = viewProp.prop('parent');
}
if (currView !== definedView) {
throw new BaseException(`Internal error: Could not calculate a property in a parent view: ${property}`);
}
if (property instanceof o.ReadPropExpr) {
let readPropExpr = property;
// Note: Don't cast for members of the AppView base class...
if (definedView.fields.some((field) => field.name == readPropExpr.name) ||
definedView.getters.some((field) => field.name == readPropExpr.name)) {
viewProp = viewProp.cast(definedView.classType);
}
}
return o.replaceVarInExpression(o.THIS_EXPR.name, viewProp, property);
}
}
export function injectFromViewParentInjector(token, optional) {
var args = [createDiTokenExpression(token)];
if (optional) {
args.push(o.NULL_EXPR);
}
return o.THIS_EXPR.prop('parentInjector').callMethod('get', args);
}
export function getViewFactoryName(component, embeddedTemplateIndex) {
return `viewFactory_${component.type.name}${embeddedTemplateIndex}`;
}
export function createDiTokenExpression(token) {
if (isPresent(token.value)) {
return o.literal(token.value);
}
else if (token.identifierIsInstance) {
return o.importExpr(token.identifier)
.instantiate([], o.importType(token.identifier, [], [o.TypeModifier.Const]));
}
else {
return o.importExpr(token.identifier);
}
}
export function createFlatArray(expressions) {
var lastNonArrayExpressions = [];
var result = o.literalArr([]);
for (var i = 0; i < expressions.length; i++) {
var expr = expressions[i];
if (expr.type instanceof o.ArrayType) {
if (lastNonArrayExpressions.length > 0) {
result =
result.callMethod(o.BuiltinMethod.ConcatArray, [o.literalArr(lastNonArrayExpressions)]);
lastNonArrayExpressions = [];
}
result = result.callMethod(o.BuiltinMethod.ConcatArray, [expr]);
}
else {
lastNonArrayExpressions.push(expr);
}
}
if (lastNonArrayExpressions.length > 0) {
result =
result.callMethod(o.BuiltinMethod.ConcatArray, [o.literalArr(lastNonArrayExpressions)]);
}
return result;
}
export function createPureProxy(fn, argCount, pureProxyProp, view) {
view.fields.push(new o.ClassField(pureProxyProp.name, null, [o.StmtModifier.Private]));
var pureProxyId = argCount < Identifiers.pureProxies.length ? Identifiers.pureProxies[argCount] : null;
if (isBlank(pureProxyId)) {
throw new BaseException(`Unsupported number of argument for pure functions: ${argCount}`);
}
view.createMethod.addStmt(o.THIS_EXPR.prop(pureProxyProp.name).set(o.importExpr(pureProxyId).callFn([fn])).toStmt());
}
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{isPresent, isBlank} from 'angular2/src/facade/lang';\nimport {BaseException} from 'angular2/src/facade/exceptions';\n\nimport * as o from '../output/output_ast';\nimport {\n  CompileTokenMetadata,\n  CompileDirectiveMetadata,\n  CompileIdentifierMetadata\n} from '../compile_metadata';\nimport {CompileView} from './compile_view';\nimport {Identifiers} from '../identifiers';\n\nexport function getPropertyInView(property: o.Expression, callingView: CompileView,\n                                  definedView: CompileView): o.Expression {\n  if (callingView === definedView) {\n    return property;\n  } else {\n    var viewProp: o.Expression = o.THIS_EXPR;\n    var currView: CompileView = callingView;\n    while (currView !== definedView && isPresent(currView.declarationElement.view)) {\n      currView = currView.declarationElement.view;\n      viewProp = viewProp.prop('parent');\n    }\n    if (currView !== definedView) {\n      throw new BaseException(\n          `Internal error: Could not calculate a property in a parent view: ${property}`);\n    }\n    if (property instanceof o.ReadPropExpr) {\n      let readPropExpr: o.ReadPropExpr = property;\n      // Note: Don't cast for members of the AppView base class...\n      if (definedView.fields.some((field) => field.name == readPropExpr.name) ||\n          definedView.getters.some((field) => field.name == readPropExpr.name)) {\n        viewProp = viewProp.cast(definedView.classType);\n      }\n    }\n    return o.replaceVarInExpression(o.THIS_EXPR.name, viewProp, property);\n  }\n}\n\nexport function injectFromViewParentInjector(token: CompileTokenMetadata,\n                                             optional: boolean): o.Expression {\n  var args = [createDiTokenExpression(token)];\n  if (optional) {\n    args.push(o.NULL_EXPR);\n  }\n  return o.THIS_EXPR.prop('parentInjector').callMethod('get', args);\n}\n\nexport function getViewFactoryName(component: CompileDirectiveMetadata,\n                                   embeddedTemplateIndex: number): string {\n  return `viewFactory_${component.type.name}${embeddedTemplateIndex}`;\n}\n\n\nexport function createDiTokenExpression(token: CompileTokenMetadata): o.Expression {\n  if (isPresent(token.value)) {\n    return o.literal(token.value);\n  } else if (token.identifierIsInstance) {\n    return o.importExpr(token.identifier)\n        .instantiate([], o.importType(token.identifier, [], [o.TypeModifier.Const]));\n  } else {\n    return o.importExpr(token.identifier);\n  }\n}\n\nexport function createFlatArray(expressions: o.Expression[]): o.Expression {\n  var lastNonArrayExpressions = [];\n  var result: o.Expression = o.literalArr([]);\n  for (var i = 0; i < expressions.length; i++) {\n    var expr = expressions[i];\n    if (expr.type instanceof o.ArrayType) {\n      if (lastNonArrayExpressions.length > 0) {\n        result =\n            result.callMethod(o.BuiltinMethod.ConcatArray, [o.literalArr(lastNonArrayExpressions)]);\n        lastNonArrayExpressions = [];\n      }\n      result = result.callMethod(o.BuiltinMethod.ConcatArray, [expr]);\n    } else {\n      lastNonArrayExpressions.push(expr);\n    }\n  }\n  if (lastNonArrayExpressions.length > 0) {\n    result =\n        result.callMethod(o.BuiltinMethod.ConcatArray, [o.literalArr(lastNonArrayExpressions)]);\n  }\n  return result;\n}\n\nexport function createPureProxy(fn: o.Expression, argCount: number, pureProxyProp: o.ReadPropExpr,\n                                view: CompileView) {\n  view.fields.push(new o.ClassField(pureProxyProp.name, null, [o.StmtModifier.Private]));\n  var pureProxyId =\n      argCount < Identifiers.pureProxies.length ? Identifiers.pureProxies[argCount] : null;\n  if (isBlank(pureProxyId)) {\n    throw new BaseException(`Unsupported number of argument for pure functions: ${argCount}`);\n  }\n  view.createMethod.addStmt(\n      o.THIS_EXPR.prop(pureProxyProp.name).set(o.importExpr(pureProxyId).callFn([fn])).toStmt());\n}\n"]}