84 lines
2.5 KiB
TypeScript
84 lines
2.5 KiB
TypeScript
/**
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* @license
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* Copyright Google Inc. All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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import {isPresent} from '../facade/lang';
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import * as o from '../output/output_ast';
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import {TemplateAst} from '../template_parser/template_ast';
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import {CompileView} from './compile_view';
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class _DebugState {
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constructor(public nodeIndex: number, public sourceAst: TemplateAst) {}
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}
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var NULL_DEBUG_STATE = new _DebugState(null, null);
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export class CompileMethod {
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private _newState: _DebugState = NULL_DEBUG_STATE;
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private _currState: _DebugState = NULL_DEBUG_STATE;
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private _debugEnabled: boolean;
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private _bodyStatements: o.Statement[] = [];
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constructor(private _view: CompileView) {
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this._debugEnabled = this._view.genConfig.genDebugInfo;
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}
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private _updateDebugContextIfNeeded() {
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if (this._newState.nodeIndex !== this._currState.nodeIndex ||
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this._newState.sourceAst !== this._currState.sourceAst) {
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var expr = this._updateDebugContext(this._newState);
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if (isPresent(expr)) {
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this._bodyStatements.push(expr.toStmt());
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}
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}
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}
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private _updateDebugContext(newState: _DebugState): o.Expression {
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this._currState = this._newState = newState;
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if (this._debugEnabled) {
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var sourceLocation =
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isPresent(newState.sourceAst) ? newState.sourceAst.sourceSpan.start : null;
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return o.THIS_EXPR.callMethod('debug', [
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o.literal(newState.nodeIndex),
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isPresent(sourceLocation) ? o.literal(sourceLocation.line) : o.NULL_EXPR,
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isPresent(sourceLocation) ? o.literal(sourceLocation.col) : o.NULL_EXPR
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]);
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} else {
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return null;
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}
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}
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resetDebugInfoExpr(nodeIndex: number, templateAst: TemplateAst): o.Expression {
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var res = this._updateDebugContext(new _DebugState(nodeIndex, templateAst));
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return res || o.NULL_EXPR;
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}
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resetDebugInfo(nodeIndex: number, templateAst: TemplateAst) {
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this._newState = new _DebugState(nodeIndex, templateAst);
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}
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push(...stmts: o.Statement[]) { this.addStmts(stmts); }
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addStmt(stmt: o.Statement) {
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this._updateDebugContextIfNeeded();
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this._bodyStatements.push(stmt);
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}
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addStmts(stmts: o.Statement[]) {
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this._updateDebugContextIfNeeded();
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this._bodyStatements.push(...stmts);
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}
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finish(): o.Statement[] { return this._bodyStatements; }
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isEmpty(): boolean { return this._bodyStatements.length === 0; }
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}
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