repackaging: all the file moves

This commit is contained in:
Igor Minar
2016-04-28 08:02:15 -07:00
committed by Misko Hevery
parent 4fe0f1fa65
commit 505da6c0a8
739 changed files with 0 additions and 52 deletions

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import {
isPresent,
isBlank,
isString,
evalExpression,
RegExpWrapper,
StringWrapper
} from 'angular2/src/facade/lang';
import {ListWrapper} from 'angular2/src/facade/collection';
import {BaseException, unimplemented} from 'angular2/src/facade/exceptions';
import * as o from './output_ast';
var _SINGLE_QUOTE_ESCAPE_STRING_RE = /'|\\|\n|\r|\$/g;
export var CATCH_ERROR_VAR = o.variable('error');
export var CATCH_STACK_VAR = o.variable('stack');
export abstract class OutputEmitter {
abstract emitStatements(moduleUrl: string, stmts: o.Statement[], exportedVars: string[]): string;
}
class _EmittedLine {
parts: string[] = [];
constructor(public indent: number) {}
}
export class EmitterVisitorContext {
static createRoot(exportedVars: string[]): EmitterVisitorContext {
return new EmitterVisitorContext(exportedVars, 0);
}
private _lines: _EmittedLine[];
private _classes: o.ClassStmt[] = [];
constructor(private _exportedVars: string[], private _indent: number) {
this._lines = [new _EmittedLine(_indent)];
}
private get _currentLine(): _EmittedLine { return this._lines[this._lines.length - 1]; }
isExportedVar(varName: string): boolean { return this._exportedVars.indexOf(varName) !== -1; }
println(lastPart: string = ''): void { this.print(lastPart, true); }
lineIsEmpty(): boolean { return this._currentLine.parts.length === 0; }
print(part: string, newLine: boolean = false) {
if (part.length > 0) {
this._currentLine.parts.push(part);
}
if (newLine) {
this._lines.push(new _EmittedLine(this._indent));
}
}
removeEmptyLastLine() {
if (this.lineIsEmpty()) {
this._lines.pop();
}
}
incIndent() {
this._indent++;
this._currentLine.indent = this._indent;
}
decIndent() {
this._indent--;
this._currentLine.indent = this._indent;
}
pushClass(clazz: o.ClassStmt) { this._classes.push(clazz); }
popClass(): o.ClassStmt { return this._classes.pop(); }
get currentClass(): o.ClassStmt {
return this._classes.length > 0 ? this._classes[this._classes.length - 1] : null;
}
toSource(): any {
var lines = this._lines;
if (lines[lines.length - 1].parts.length === 0) {
lines = lines.slice(0, lines.length - 1);
}
return lines.map((line) => {
if (line.parts.length > 0) {
return _createIndent(line.indent) + line.parts.join('');
} else {
return '';
}
})
.join('\n');
}
}
export abstract class AbstractEmitterVisitor implements o.StatementVisitor, o.ExpressionVisitor {
constructor(private _escapeDollarInStrings: boolean) {}
visitExpressionStmt(stmt: o.ExpressionStatement, ctx: EmitterVisitorContext): any {
stmt.expr.visitExpression(this, ctx);
ctx.println(';');
return null;
}
visitReturnStmt(stmt: o.ReturnStatement, ctx: EmitterVisitorContext): any {
ctx.print(`return `);
stmt.value.visitExpression(this, ctx);
ctx.println(';');
return null;
}
abstract visitCastExpr(ast: o.CastExpr, context: any): any;
abstract visitDeclareClassStmt(stmt: o.ClassStmt, ctx: EmitterVisitorContext): any;
visitIfStmt(stmt: o.IfStmt, ctx: EmitterVisitorContext): any {
ctx.print(`if (`);
stmt.condition.visitExpression(this, ctx);
ctx.print(`) {`);
var hasElseCase = isPresent(stmt.falseCase) && stmt.falseCase.length > 0;
if (stmt.trueCase.length <= 1 && !hasElseCase) {
ctx.print(` `);
this.visitAllStatements(stmt.trueCase, ctx);
ctx.removeEmptyLastLine();
ctx.print(` `);
} else {
ctx.println();
ctx.incIndent();
this.visitAllStatements(stmt.trueCase, ctx);
ctx.decIndent();
if (hasElseCase) {
ctx.println(`} else {`);
ctx.incIndent();
this.visitAllStatements(stmt.falseCase, ctx);
ctx.decIndent();
}
}
ctx.println(`}`);
return null;
}
abstract visitTryCatchStmt(stmt: o.TryCatchStmt, ctx: EmitterVisitorContext): any;
visitThrowStmt(stmt: o.ThrowStmt, ctx: EmitterVisitorContext): any {
ctx.print(`throw `);
stmt.error.visitExpression(this, ctx);
ctx.println(`;`);
return null;
}
visitCommentStmt(stmt: o.CommentStmt, ctx: EmitterVisitorContext): any {
var lines = stmt.comment.split('\n');
lines.forEach((line) => { ctx.println(`// ${line}`); });
return null;
}
abstract visitDeclareVarStmt(stmt: o.DeclareVarStmt, ctx: EmitterVisitorContext): any;
visitWriteVarExpr(expr: o.WriteVarExpr, ctx: EmitterVisitorContext): any {
var lineWasEmpty = ctx.lineIsEmpty();
if (!lineWasEmpty) {
ctx.print('(');
}
ctx.print(`${expr.name} = `);
expr.value.visitExpression(this, ctx);
if (!lineWasEmpty) {
ctx.print(')');
}
return null;
}
visitWriteKeyExpr(expr: o.WriteKeyExpr, ctx: EmitterVisitorContext): any {
var lineWasEmpty = ctx.lineIsEmpty();
if (!lineWasEmpty) {
ctx.print('(');
}
expr.receiver.visitExpression(this, ctx);
ctx.print(`[`);
expr.index.visitExpression(this, ctx);
ctx.print(`] = `);
expr.value.visitExpression(this, ctx);
if (!lineWasEmpty) {
ctx.print(')');
}
return null;
}
visitWritePropExpr(expr: o.WritePropExpr, ctx: EmitterVisitorContext): any {
var lineWasEmpty = ctx.lineIsEmpty();
if (!lineWasEmpty) {
ctx.print('(');
}
expr.receiver.visitExpression(this, ctx);
ctx.print(`.${expr.name} = `);
expr.value.visitExpression(this, ctx);
if (!lineWasEmpty) {
ctx.print(')');
}
return null;
}
visitInvokeMethodExpr(expr: o.InvokeMethodExpr, ctx: EmitterVisitorContext): any {
expr.receiver.visitExpression(this, ctx);
var name = expr.name;
if (isPresent(expr.builtin)) {
name = this.getBuiltinMethodName(expr.builtin);
if (isBlank(name)) {
// some builtins just mean to skip the call.
// e.g. `bind` in Dart.
return null;
}
}
ctx.print(`.${name}(`);
this.visitAllExpressions(expr.args, ctx, `,`);
ctx.print(`)`);
return null;
}
abstract getBuiltinMethodName(method: o.BuiltinMethod): string;
visitInvokeFunctionExpr(expr: o.InvokeFunctionExpr, ctx: EmitterVisitorContext): any {
expr.fn.visitExpression(this, ctx);
ctx.print(`(`);
this.visitAllExpressions(expr.args, ctx, ',');
ctx.print(`)`);
return null;
}
visitReadVarExpr(ast: o.ReadVarExpr, ctx: EmitterVisitorContext): any {
var varName = ast.name;
if (isPresent(ast.builtin)) {
switch (ast.builtin) {
case o.BuiltinVar.Super:
varName = 'super';
break;
case o.BuiltinVar.This:
varName = 'this';
break;
case o.BuiltinVar.CatchError:
varName = CATCH_ERROR_VAR.name;
break;
case o.BuiltinVar.CatchStack:
varName = CATCH_STACK_VAR.name;
break;
default:
throw new BaseException(`Unknown builtin variable ${ast.builtin}`);
}
}
ctx.print(varName);
return null;
}
visitInstantiateExpr(ast: o.InstantiateExpr, ctx: EmitterVisitorContext): any {
ctx.print(`new `);
ast.classExpr.visitExpression(this, ctx);
ctx.print(`(`);
this.visitAllExpressions(ast.args, ctx, ',');
ctx.print(`)`);
return null;
}
visitLiteralExpr(ast: o.LiteralExpr, ctx: EmitterVisitorContext): any {
var value = ast.value;
if (isString(value)) {
ctx.print(escapeSingleQuoteString(value, this._escapeDollarInStrings));
} else if (isBlank(value)) {
ctx.print('null');
} else {
ctx.print(`${value}`);
}
return null;
}
abstract visitExternalExpr(ast: o.ExternalExpr, ctx: EmitterVisitorContext): any;
visitConditionalExpr(ast: o.ConditionalExpr, ctx: EmitterVisitorContext): any {
ctx.print(`(`);
ast.condition.visitExpression(this, ctx);
ctx.print('? ');
ast.trueCase.visitExpression(this, ctx);
ctx.print(': ');
ast.falseCase.visitExpression(this, ctx);
ctx.print(`)`);
return null;
}
visitNotExpr(ast: o.NotExpr, ctx: EmitterVisitorContext): any {
ctx.print('!');
ast.condition.visitExpression(this, ctx);
return null;
}
abstract visitFunctionExpr(ast: o.FunctionExpr, ctx: EmitterVisitorContext): any;
abstract visitDeclareFunctionStmt(stmt: o.DeclareFunctionStmt, context: any): any;
visitBinaryOperatorExpr(ast: o.BinaryOperatorExpr, ctx: EmitterVisitorContext): any {
var opStr;
switch (ast.operator) {
case o.BinaryOperator.Equals:
opStr = '==';
break;
case o.BinaryOperator.Identical:
opStr = '===';
break;
case o.BinaryOperator.NotEquals:
opStr = '!=';
break;
case o.BinaryOperator.NotIdentical:
opStr = '!==';
break;
case o.BinaryOperator.And:
opStr = '&&';
break;
case o.BinaryOperator.Or:
opStr = '||';
break;
case o.BinaryOperator.Plus:
opStr = '+';
break;
case o.BinaryOperator.Minus:
opStr = '-';
break;
case o.BinaryOperator.Divide:
opStr = '/';
break;
case o.BinaryOperator.Multiply:
opStr = '*';
break;
case o.BinaryOperator.Modulo:
opStr = '%';
break;
case o.BinaryOperator.Lower:
opStr = '<';
break;
case o.BinaryOperator.LowerEquals:
opStr = '<=';
break;
case o.BinaryOperator.Bigger:
opStr = '>';
break;
case o.BinaryOperator.BiggerEquals:
opStr = '>=';
break;
default:
throw new BaseException(`Unknown operator ${ast.operator}`);
}
ctx.print(`(`);
ast.lhs.visitExpression(this, ctx);
ctx.print(` ${opStr} `);
ast.rhs.visitExpression(this, ctx);
ctx.print(`)`);
return null;
}
visitReadPropExpr(ast: o.ReadPropExpr, ctx: EmitterVisitorContext): any {
ast.receiver.visitExpression(this, ctx);
ctx.print(`.`);
ctx.print(ast.name);
return null;
}
visitReadKeyExpr(ast: o.ReadKeyExpr, ctx: EmitterVisitorContext): any {
ast.receiver.visitExpression(this, ctx);
ctx.print(`[`);
ast.index.visitExpression(this, ctx);
ctx.print(`]`);
return null;
}
visitLiteralArrayExpr(ast: o.LiteralArrayExpr, ctx: EmitterVisitorContext): any {
var useNewLine = ast.entries.length > 1;
ctx.print(`[`, useNewLine);
ctx.incIndent();
this.visitAllExpressions(ast.entries, ctx, ',', useNewLine);
ctx.decIndent();
ctx.print(`]`, useNewLine);
return null;
}
visitLiteralMapExpr(ast: o.LiteralMapExpr, ctx: EmitterVisitorContext): any {
var useNewLine = ast.entries.length > 1;
ctx.print(`{`, useNewLine);
ctx.incIndent();
this.visitAllObjects((entry) => {
ctx.print(`${escapeSingleQuoteString(entry[0], this._escapeDollarInStrings)}: `);
entry[1].visitExpression(this, ctx);
}, ast.entries, ctx, ',', useNewLine);
ctx.decIndent();
ctx.print(`}`, useNewLine);
return null;
}
visitAllExpressions(expressions: o.Expression[], ctx: EmitterVisitorContext, separator: string,
newLine: boolean = false): void {
this.visitAllObjects((expr) => expr.visitExpression(this, ctx), expressions, ctx, separator,
newLine);
}
visitAllObjects(handler: Function, expressions: any, ctx: EmitterVisitorContext,
separator: string, newLine: boolean = false): void {
for (var i = 0; i < expressions.length; i++) {
if (i > 0) {
ctx.print(separator, newLine);
}
handler(expressions[i]);
}
if (newLine) {
ctx.println();
}
}
visitAllStatements(statements: o.Statement[], ctx: EmitterVisitorContext): void {
statements.forEach((stmt) => { return stmt.visitStatement(this, ctx); });
}
}
export function escapeSingleQuoteString(input: string, escapeDollar: boolean): any {
if (isBlank(input)) {
return null;
}
var body = StringWrapper.replaceAllMapped(input, _SINGLE_QUOTE_ESCAPE_STRING_RE, (match) => {
if (match[0] == '$') {
return escapeDollar ? '\\$' : '$';
} else if (match[0] == '\n') {
return '\\n';
} else if (match[0] == '\r') {
return '\\r';
} else {
return `\\${match[0]}`;
}
});
return `'${body}'`;
}
function _createIndent(count: number): string {
var res = '';
for (var i = 0; i < count; i++) {
res += ' ';
}
return res;
}

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import {isPresent} from 'angular2/src/facade/lang';
import {BaseException} from 'angular2/src/facade/exceptions';
import * as o from './output_ast';
import {
EmitterVisitorContext,
AbstractEmitterVisitor,
CATCH_ERROR_VAR,
CATCH_STACK_VAR
} from './abstract_emitter';
export abstract class AbstractJsEmitterVisitor extends AbstractEmitterVisitor {
constructor() { super(false); }
visitDeclareClassStmt(stmt: o.ClassStmt, ctx: EmitterVisitorContext): any {
ctx.pushClass(stmt);
this._visitClassConstructor(stmt, ctx);
if (isPresent(stmt.parent)) {
ctx.print(`${stmt.name}.prototype = Object.create(`);
stmt.parent.visitExpression(this, ctx);
ctx.println(`.prototype);`);
}
stmt.getters.forEach((getter) => this._visitClassGetter(stmt, getter, ctx));
stmt.methods.forEach((method) => this._visitClassMethod(stmt, method, ctx));
ctx.popClass();
return null;
}
private _visitClassConstructor(stmt: o.ClassStmt, ctx: EmitterVisitorContext) {
ctx.print(`function ${stmt.name}(`);
if (isPresent(stmt.constructorMethod)) {
this._visitParams(stmt.constructorMethod.params, ctx);
}
ctx.println(`) {`);
ctx.incIndent();
if (isPresent(stmt.constructorMethod)) {
if (stmt.constructorMethod.body.length > 0) {
ctx.println(`var self = this;`);
this.visitAllStatements(stmt.constructorMethod.body, ctx);
}
}
ctx.decIndent();
ctx.println(`}`);
}
private _visitClassGetter(stmt: o.ClassStmt, getter: o.ClassGetter, ctx: EmitterVisitorContext) {
ctx.println(
`Object.defineProperty(${stmt.name}.prototype, '${getter.name}', { get: function() {`);
ctx.incIndent();
if (getter.body.length > 0) {
ctx.println(`var self = this;`);
this.visitAllStatements(getter.body, ctx);
}
ctx.decIndent();
ctx.println(`}});`);
}
private _visitClassMethod(stmt: o.ClassStmt, method: o.ClassMethod, ctx: EmitterVisitorContext) {
ctx.print(`${stmt.name}.prototype.${method.name} = function(`);
this._visitParams(method.params, ctx);
ctx.println(`) {`);
ctx.incIndent();
if (method.body.length > 0) {
ctx.println(`var self = this;`);
this.visitAllStatements(method.body, ctx);
}
ctx.decIndent();
ctx.println(`};`);
}
visitReadVarExpr(ast: o.ReadVarExpr, ctx: EmitterVisitorContext): string {
if (ast.builtin === o.BuiltinVar.This) {
ctx.print('self');
} else if (ast.builtin === o.BuiltinVar.Super) {
throw new BaseException(
`'super' needs to be handled at a parent ast node, not at the variable level!`);
} else {
super.visitReadVarExpr(ast, ctx);
}
return null;
}
visitDeclareVarStmt(stmt: o.DeclareVarStmt, ctx: EmitterVisitorContext): any {
ctx.print(`var ${stmt.name} = `);
stmt.value.visitExpression(this, ctx);
ctx.println(`;`);
return null;
}
visitCastExpr(ast: o.CastExpr, ctx: EmitterVisitorContext): any {
ast.value.visitExpression(this, ctx);
return null;
}
visitInvokeFunctionExpr(expr: o.InvokeFunctionExpr, ctx: EmitterVisitorContext): string {
var fnExpr = expr.fn;
if (fnExpr instanceof o.ReadVarExpr && fnExpr.builtin === o.BuiltinVar.Super) {
ctx.currentClass.parent.visitExpression(this, ctx);
ctx.print(`.call(this`);
if (expr.args.length > 0) {
ctx.print(`, `);
this.visitAllExpressions(expr.args, ctx, ',');
}
ctx.print(`)`);
} else {
super.visitInvokeFunctionExpr(expr, ctx);
}
return null;
}
visitFunctionExpr(ast: o.FunctionExpr, ctx: EmitterVisitorContext): any {
ctx.print(`function(`);
this._visitParams(ast.params, ctx);
ctx.println(`) {`);
ctx.incIndent();
this.visitAllStatements(ast.statements, ctx);
ctx.decIndent();
ctx.print(`}`);
return null;
}
visitDeclareFunctionStmt(stmt: o.DeclareFunctionStmt, ctx: EmitterVisitorContext): any {
ctx.print(`function ${stmt.name}(`);
this._visitParams(stmt.params, ctx);
ctx.println(`) {`);
ctx.incIndent();
this.visitAllStatements(stmt.statements, ctx);
ctx.decIndent();
ctx.println(`}`);
return null;
}
visitTryCatchStmt(stmt: o.TryCatchStmt, ctx: EmitterVisitorContext): any {
ctx.println(`try {`);
ctx.incIndent();
this.visitAllStatements(stmt.bodyStmts, ctx);
ctx.decIndent();
ctx.println(`} catch (${CATCH_ERROR_VAR.name}) {`);
ctx.incIndent();
var catchStmts = [
<o.Statement>CATCH_STACK_VAR.set(CATCH_ERROR_VAR.prop('stack'))
.toDeclStmt(null, [o.StmtModifier.Final])
].concat(stmt.catchStmts);
this.visitAllStatements(catchStmts, ctx);
ctx.decIndent();
ctx.println(`}`);
return null;
}
private _visitParams(params: o.FnParam[], ctx: EmitterVisitorContext): void {
this.visitAllObjects((param) => ctx.print(param.name), params, ctx, ',');
}
getBuiltinMethodName(method: o.BuiltinMethod): string {
var name;
switch (method) {
case o.BuiltinMethod.ConcatArray:
name = 'concat';
break;
case o.BuiltinMethod.SubscribeObservable:
name = 'subscribe';
break;
case o.BuiltinMethod.bind:
name = 'bind';
break;
default:
throw new BaseException(`Unknown builtin method: ${method}`);
}
return name;
}
}

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import {
StringWrapper,
RegExpWrapper,
isPresent,
isBlank,
Math,
isString,
isArray
} from 'angular2/src/facade/lang';
import {ListWrapper} from 'angular2/src/facade/collection';
import {BaseException} from 'angular2/src/facade/exceptions';
import {CompileIdentifierMetadata} from '../compile_metadata';
import * as o from './output_ast';
import {
OutputEmitter,
EmitterVisitorContext,
AbstractEmitterVisitor,
CATCH_ERROR_VAR,
CATCH_STACK_VAR,
escapeSingleQuoteString
} from './abstract_emitter';
import {getImportModulePath, ImportEnv} from './path_util';
var _debugModuleUrl = 'asset://debug/lib';
export function debugOutputAstAsDart(ast: o.Statement | o.Expression | o.Type | any[]): string {
var converter = new _DartEmitterVisitor(_debugModuleUrl);
var ctx = EmitterVisitorContext.createRoot([]);
var asts: any[];
if (isArray(ast)) {
asts = <any[]>ast;
} else {
asts = [ast];
}
asts.forEach((ast) => {
if (ast instanceof o.Statement) {
ast.visitStatement(converter, ctx);
} else if (ast instanceof o.Expression) {
ast.visitExpression(converter, ctx);
} else if (ast instanceof o.Type) {
ast.visitType(converter, ctx);
} else {
throw new BaseException(`Don't know how to print debug info for ${ast}`);
}
});
return ctx.toSource();
}
export class DartEmitter implements OutputEmitter {
constructor() {}
emitStatements(moduleUrl: string, stmts: o.Statement[], exportedVars: string[]): string {
var srcParts = [];
// Note: We are not creating a library here as Dart does not need it.
// Dart analzyer might complain about it though.
var converter = new _DartEmitterVisitor(moduleUrl);
var ctx = EmitterVisitorContext.createRoot(exportedVars);
converter.visitAllStatements(stmts, ctx);
converter.importsWithPrefixes.forEach((prefix, importedModuleUrl) => {
srcParts.push(
`import '${getImportModulePath(moduleUrl, importedModuleUrl, ImportEnv.Dart)}' as ${prefix};`);
});
srcParts.push(ctx.toSource());
return srcParts.join('\n');
}
}
class _DartEmitterVisitor extends AbstractEmitterVisitor implements o.TypeVisitor {
importsWithPrefixes = new Map<string, string>();
constructor(private _moduleUrl: string) { super(true); }
visitExternalExpr(ast: o.ExternalExpr, ctx: EmitterVisitorContext): any {
this._visitIdentifier(ast.value, ast.typeParams, ctx);
return null;
}
visitDeclareVarStmt(stmt: o.DeclareVarStmt, ctx: EmitterVisitorContext): any {
if (stmt.hasModifier(o.StmtModifier.Final)) {
if (isConstType(stmt.type)) {
ctx.print(`const `);
} else {
ctx.print(`final `);
}
} else if (isBlank(stmt.type)) {
ctx.print(`var `);
}
if (isPresent(stmt.type)) {
stmt.type.visitType(this, ctx);
ctx.print(` `);
}
ctx.print(`${stmt.name} = `);
stmt.value.visitExpression(this, ctx);
ctx.println(`;`);
return null;
}
visitCastExpr(ast: o.CastExpr, ctx: EmitterVisitorContext): any {
ctx.print(`(`);
ast.value.visitExpression(this, ctx);
ctx.print(` as `);
ast.type.visitType(this, ctx);
ctx.print(`)`);
return null;
}
visitDeclareClassStmt(stmt: o.ClassStmt, ctx: EmitterVisitorContext): any {
ctx.pushClass(stmt);
ctx.print(`class ${stmt.name}`);
if (isPresent(stmt.parent)) {
ctx.print(` extends `);
stmt.parent.visitExpression(this, ctx);
}
ctx.println(` {`);
ctx.incIndent();
stmt.fields.forEach((field) => this._visitClassField(field, ctx));
if (isPresent(stmt.constructorMethod)) {
this._visitClassConstructor(stmt, ctx);
}
stmt.getters.forEach((getter) => this._visitClassGetter(getter, ctx));
stmt.methods.forEach((method) => this._visitClassMethod(method, ctx));
ctx.decIndent();
ctx.println(`}`);
ctx.popClass();
return null;
}
private _visitClassField(field: o.ClassField, ctx: EmitterVisitorContext) {
if (field.hasModifier(o.StmtModifier.Final)) {
ctx.print(`final `);
} else if (isBlank(field.type)) {
ctx.print(`var `);
}
if (isPresent(field.type)) {
field.type.visitType(this, ctx);
ctx.print(` `);
}
ctx.println(`${field.name};`);
}
private _visitClassGetter(getter: o.ClassGetter, ctx: EmitterVisitorContext) {
if (isPresent(getter.type)) {
getter.type.visitType(this, ctx);
ctx.print(` `);
}
ctx.println(`get ${getter.name} {`);
ctx.incIndent();
this.visitAllStatements(getter.body, ctx);
ctx.decIndent();
ctx.println(`}`);
}
private _visitClassConstructor(stmt: o.ClassStmt, ctx: EmitterVisitorContext) {
ctx.print(`${stmt.name}(`);
this._visitParams(stmt.constructorMethod.params, ctx);
ctx.print(`)`);
var ctorStmts = stmt.constructorMethod.body;
var superCtorExpr = ctorStmts.length > 0 ? getSuperConstructorCallExpr(ctorStmts[0]) : null;
if (isPresent(superCtorExpr)) {
ctx.print(`: `);
superCtorExpr.visitExpression(this, ctx);
ctorStmts = ctorStmts.slice(1);
}
ctx.println(` {`);
ctx.incIndent();
this.visitAllStatements(ctorStmts, ctx);
ctx.decIndent();
ctx.println(`}`);
}
private _visitClassMethod(method: o.ClassMethod, ctx: EmitterVisitorContext) {
if (isPresent(method.type)) {
method.type.visitType(this, ctx);
} else {
ctx.print(`void`);
}
ctx.print(` ${method.name}(`);
this._visitParams(method.params, ctx);
ctx.println(`) {`);
ctx.incIndent();
this.visitAllStatements(method.body, ctx);
ctx.decIndent();
ctx.println(`}`);
}
visitFunctionExpr(ast: o.FunctionExpr, ctx: EmitterVisitorContext): any {
ctx.print(`(`);
this._visitParams(ast.params, ctx);
ctx.println(`) {`);
ctx.incIndent();
this.visitAllStatements(ast.statements, ctx);
ctx.decIndent();
ctx.print(`}`);
return null;
}
visitDeclareFunctionStmt(stmt: o.DeclareFunctionStmt, ctx: EmitterVisitorContext): any {
if (isPresent(stmt.type)) {
stmt.type.visitType(this, ctx);
} else {
ctx.print(`void`);
}
ctx.print(` ${stmt.name}(`);
this._visitParams(stmt.params, ctx);
ctx.println(`) {`);
ctx.incIndent();
this.visitAllStatements(stmt.statements, ctx);
ctx.decIndent();
ctx.println(`}`);
return null;
}
getBuiltinMethodName(method: o.BuiltinMethod): string {
var name;
switch (method) {
case o.BuiltinMethod.ConcatArray:
name = '.addAll';
break;
case o.BuiltinMethod.SubscribeObservable:
name = 'listen';
break;
case o.BuiltinMethod.bind:
name = null;
break;
default:
throw new BaseException(`Unknown builtin method: ${method}`);
}
return name;
}
visitTryCatchStmt(stmt: o.TryCatchStmt, ctx: EmitterVisitorContext): any {
ctx.println(`try {`);
ctx.incIndent();
this.visitAllStatements(stmt.bodyStmts, ctx);
ctx.decIndent();
ctx.println(`} catch (${CATCH_ERROR_VAR.name}, ${CATCH_STACK_VAR.name}) {`);
ctx.incIndent();
this.visitAllStatements(stmt.catchStmts, ctx);
ctx.decIndent();
ctx.println(`}`);
return null;
}
visitBinaryOperatorExpr(ast: o.BinaryOperatorExpr, ctx: EmitterVisitorContext): any {
switch (ast.operator) {
case o.BinaryOperator.Identical:
ctx.print(`identical(`);
ast.lhs.visitExpression(this, ctx);
ctx.print(`, `);
ast.rhs.visitExpression(this, ctx);
ctx.print(`)`);
break;
case o.BinaryOperator.NotIdentical:
ctx.print(`!identical(`);
ast.lhs.visitExpression(this, ctx);
ctx.print(`, `);
ast.rhs.visitExpression(this, ctx);
ctx.print(`)`);
break;
default:
super.visitBinaryOperatorExpr(ast, ctx);
}
return null;
}
visitLiteralArrayExpr(ast: o.LiteralArrayExpr, ctx: EmitterVisitorContext): any {
if (isConstType(ast.type)) {
ctx.print(`const `);
}
return super.visitLiteralArrayExpr(ast, ctx);
}
visitLiteralMapExpr(ast: o.LiteralMapExpr, ctx: EmitterVisitorContext): any {
if (isConstType(ast.type)) {
ctx.print(`const `);
}
if (isPresent(ast.valueType)) {
ctx.print(`<String, `);
ast.valueType.visitType(this, ctx);
ctx.print(`>`);
}
return super.visitLiteralMapExpr(ast, ctx);
}
visitInstantiateExpr(ast: o.InstantiateExpr, ctx: EmitterVisitorContext): any {
ctx.print(isConstType(ast.type) ? `const` : `new`);
ctx.print(' ');
ast.classExpr.visitExpression(this, ctx);
ctx.print(`(`);
this.visitAllExpressions(ast.args, ctx, `,`);
ctx.print(`)`);
return null;
}
visitBuiltintType(type: o.BuiltinType, ctx: EmitterVisitorContext): any {
var typeStr;
switch (type.name) {
case o.BuiltinTypeName.Bool:
typeStr = 'bool';
break;
case o.BuiltinTypeName.Dynamic:
typeStr = 'dynamic';
break;
case o.BuiltinTypeName.Function:
typeStr = 'Function';
break;
case o.BuiltinTypeName.Number:
typeStr = 'num';
break;
case o.BuiltinTypeName.Int:
typeStr = 'int';
break;
case o.BuiltinTypeName.String:
typeStr = 'String';
break;
default:
throw new BaseException(`Unsupported builtin type ${type.name}`);
}
ctx.print(typeStr);
return null;
}
visitExternalType(ast: o.ExternalType, ctx: EmitterVisitorContext): any {
this._visitIdentifier(ast.value, ast.typeParams, ctx);
return null;
}
visitArrayType(type: o.ArrayType, ctx: EmitterVisitorContext): any {
ctx.print(`List<`);
if (isPresent(type.of)) {
type.of.visitType(this, ctx);
} else {
ctx.print(`dynamic`);
}
ctx.print(`>`);
return null;
}
visitMapType(type: o.MapType, ctx: EmitterVisitorContext): any {
ctx.print(`Map<String, `);
if (isPresent(type.valueType)) {
type.valueType.visitType(this, ctx);
} else {
ctx.print(`dynamic`);
}
ctx.print(`>`);
return null;
}
private _visitParams(params: o.FnParam[], ctx: EmitterVisitorContext): void {
this.visitAllObjects((param) => {
if (isPresent(param.type)) {
param.type.visitType(this, ctx);
ctx.print(' ');
}
ctx.print(param.name);
}, params, ctx, ',');
}
private _visitIdentifier(value: CompileIdentifierMetadata, typeParams: o.Type[],
ctx: EmitterVisitorContext): void {
if (isBlank(value.name)) {
throw new BaseException(`Internal error: unknown identifier ${value}`);
}
if (isPresent(value.moduleUrl) && value.moduleUrl != this._moduleUrl) {
var prefix = this.importsWithPrefixes.get(value.moduleUrl);
if (isBlank(prefix)) {
prefix = `import${this.importsWithPrefixes.size}`;
this.importsWithPrefixes.set(value.moduleUrl, prefix);
}
ctx.print(`${prefix}.`);
}
ctx.print(value.name);
if (isPresent(typeParams) && typeParams.length > 0) {
ctx.print(`<`);
this.visitAllObjects((type) => type.visitType(this, ctx), typeParams, ctx, ',');
ctx.print(`>`);
}
}
}
function getSuperConstructorCallExpr(stmt: o.Statement): o.Expression {
if (stmt instanceof o.ExpressionStatement) {
var expr = stmt.expr;
if (expr instanceof o.InvokeFunctionExpr) {
var fn = expr.fn;
if (fn instanceof o.ReadVarExpr) {
if (fn.builtin === o.BuiltinVar.Super) {
return expr;
}
}
}
}
return null;
}
function isConstType(type: o.Type): boolean {
return isPresent(type) && type.hasModifier(o.TypeModifier.Const);
}

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import {isPresent} from 'angular2/src/facade/lang';
import {AppView, DebugAppView} from 'angular2/src/core/linker/view';
import {AppElement} from 'angular2/src/core/linker/element';
import {BaseException} from 'angular2/src/facade/exceptions';
import {InstanceFactory, DynamicInstance} from './output_interpreter';
export class InterpretiveAppViewInstanceFactory implements InstanceFactory {
createInstance(superClass: any, clazz: any, args: any[], props: Map<string, any>,
getters: Map<string, Function>, methods: Map<string, Function>): any {
if (superClass === AppView) {
// We are always using DebugAppView as parent.
// However, in prod mode we generate a constructor call that does
// not have the argument for the debugNodeInfos.
args = args.concat([null]);
return new _InterpretiveAppView(args, props, getters, methods);
} else if (superClass === DebugAppView) {
return new _InterpretiveAppView(args, props, getters, methods);
}
throw new BaseException(`Can't instantiate class ${superClass} in interpretative mode`);
}
}
class _InterpretiveAppView extends DebugAppView<any> implements DynamicInstance {
constructor(args: any[], public props: Map<string, any>, public getters: Map<string, Function>,
public methods: Map<string, Function>) {
super(args[0], args[1], args[2], args[3], args[4], args[5], args[6], args[7]);
}
createInternal(rootSelector: string | any): AppElement {
var m = this.methods.get('createInternal');
if (isPresent(m)) {
return m(rootSelector);
} else {
return super.createInternal(rootSelector);
}
}
injectorGetInternal(token: any, nodeIndex: number, notFoundResult: any): any {
var m = this.methods.get('injectorGetInternal');
if (isPresent(m)) {
return m(token, nodeIndex, notFoundResult);
} else {
return super.injectorGet(token, nodeIndex, notFoundResult);
}
}
destroyInternal(): void {
var m = this.methods.get('destroyInternal');
if (isPresent(m)) {
return m();
} else {
return super.destroyInternal();
}
}
dirtyParentQueriesInternal(): void {
var m = this.methods.get('dirtyParentQueriesInternal');
if (isPresent(m)) {
return m();
} else {
return super.dirtyParentQueriesInternal();
}
}
detectChangesInternal(throwOnChange: boolean): void {
var m = this.methods.get('detectChangesInternal');
if (isPresent(m)) {
return m(throwOnChange);
} else {
return super.detectChangesInternal(throwOnChange);
}
}
}

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import * as o from './output_ast';
import {
isPresent,
isBlank,
isString,
evalExpression,
RegExpWrapper,
StringWrapper
} from 'angular2/src/facade/lang';
import {BaseException} from 'angular2/src/facade/exceptions';
import {OutputEmitter, EmitterVisitorContext} from './abstract_emitter';
import {AbstractJsEmitterVisitor} from './abstract_js_emitter';
import {getImportModulePath, ImportEnv} from './path_util';
export class JavaScriptEmitter implements OutputEmitter {
constructor() {}
emitStatements(moduleUrl: string, stmts: o.Statement[], exportedVars: string[]): string {
var converter = new JsEmitterVisitor(moduleUrl);
var ctx = EmitterVisitorContext.createRoot(exportedVars);
converter.visitAllStatements(stmts, ctx);
var srcParts = [];
converter.importsWithPrefixes.forEach((prefix, importedModuleUrl) => {
// Note: can't write the real word for import as it screws up system.js auto detection...
srcParts.push(`var ${prefix} = req` +
`uire('${getImportModulePath(moduleUrl, importedModuleUrl, ImportEnv.JS)}');`);
});
srcParts.push(ctx.toSource());
return srcParts.join('\n');
}
}
class JsEmitterVisitor extends AbstractJsEmitterVisitor {
importsWithPrefixes = new Map<string, string>();
constructor(private _moduleUrl: string) { super(); }
visitExternalExpr(ast: o.ExternalExpr, ctx: EmitterVisitorContext): any {
if (isBlank(ast.value.name)) {
throw new BaseException(`Internal error: unknown identifier ${ast.value}`);
}
if (isPresent(ast.value.moduleUrl) && ast.value.moduleUrl != this._moduleUrl) {
var prefix = this.importsWithPrefixes.get(ast.value.moduleUrl);
if (isBlank(prefix)) {
prefix = `import${this.importsWithPrefixes.size}`;
this.importsWithPrefixes.set(ast.value.moduleUrl, prefix);
}
ctx.print(`${prefix}.`);
}
ctx.print(ast.value.name);
return null;
}
visitDeclareVarStmt(stmt: o.DeclareVarStmt, ctx: EmitterVisitorContext): any {
super.visitDeclareVarStmt(stmt, ctx);
if (ctx.isExportedVar(stmt.name)) {
ctx.println(exportVar(stmt.name));
}
return null;
}
visitDeclareFunctionStmt(stmt: o.DeclareFunctionStmt, ctx: EmitterVisitorContext): any {
super.visitDeclareFunctionStmt(stmt, ctx);
if (ctx.isExportedVar(stmt.name)) {
ctx.println(exportVar(stmt.name));
}
return null;
}
visitDeclareClassStmt(stmt: o.ClassStmt, ctx: EmitterVisitorContext): any {
super.visitDeclareClassStmt(stmt, ctx);
if (ctx.isExportedVar(stmt.name)) {
ctx.println(exportVar(stmt.name));
}
return null;
}
}
function exportVar(varName: string): string {
return `Object.defineProperty(exports, '${varName}', { get: function() { return ${varName}; }});`;
}

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import {isString, isPresent, isBlank} from 'angular2/src/facade/lang';
import {CompileIdentifierMetadata} from '../compile_metadata';
//// Types
export enum TypeModifier {
Const
}
export abstract class Type {
constructor(public modifiers: TypeModifier[] = null) {
if (isBlank(modifiers)) {
this.modifiers = [];
}
}
abstract visitType(visitor: TypeVisitor, context: any): any;
hasModifier(modifier: TypeModifier): boolean { return this.modifiers.indexOf(modifier) !== -1; }
}
export enum BuiltinTypeName {
Dynamic,
Bool,
String,
Int,
Number,
Function
}
export class BuiltinType extends Type {
constructor(public name: BuiltinTypeName, modifiers: TypeModifier[] = null) { super(modifiers); }
visitType(visitor: TypeVisitor, context: any): any {
return visitor.visitBuiltintType(this, context);
}
}
export class ExternalType extends Type {
constructor(public value: CompileIdentifierMetadata, public typeParams: Type[] = null,
modifiers: TypeModifier[] = null) {
super(modifiers);
}
visitType(visitor: TypeVisitor, context: any): any {
return visitor.visitExternalType(this, context);
}
}
export class ArrayType extends Type {
constructor(public of: Type, modifiers: TypeModifier[] = null) { super(modifiers); }
visitType(visitor: TypeVisitor, context: any): any {
return visitor.visitArrayType(this, context);
}
}
export class MapType extends Type {
constructor(public valueType: Type, modifiers: TypeModifier[] = null) { super(modifiers); }
visitType(visitor: TypeVisitor, context: any): any { return visitor.visitMapType(this, context); }
}
export var DYNAMIC_TYPE = new BuiltinType(BuiltinTypeName.Dynamic);
export var BOOL_TYPE = new BuiltinType(BuiltinTypeName.Bool);
export var INT_TYPE = new BuiltinType(BuiltinTypeName.Int);
export var NUMBER_TYPE = new BuiltinType(BuiltinTypeName.Number);
export var STRING_TYPE = new BuiltinType(BuiltinTypeName.String);
export var FUNCTION_TYPE = new BuiltinType(BuiltinTypeName.Function);
export interface TypeVisitor {
visitBuiltintType(type: BuiltinType, context: any): any;
visitExternalType(type: ExternalType, context: any): any;
visitArrayType(type: ArrayType, context: any): any;
visitMapType(type: MapType, context: any): any;
}
///// Expressions
export enum BinaryOperator {
Equals,
NotEquals,
Identical,
NotIdentical,
Minus,
Plus,
Divide,
Multiply,
Modulo,
And,
Or,
Lower,
LowerEquals,
Bigger,
BiggerEquals
}
export abstract class Expression {
constructor(public type: Type) {}
abstract visitExpression(visitor: ExpressionVisitor, context: any): any;
prop(name: string): ReadPropExpr { return new ReadPropExpr(this, name); }
key(index: Expression, type: Type = null): ReadKeyExpr {
return new ReadKeyExpr(this, index, type);
}
callMethod(name: string | BuiltinMethod, params: Expression[]): InvokeMethodExpr {
return new InvokeMethodExpr(this, name, params);
}
callFn(params: Expression[]): InvokeFunctionExpr { return new InvokeFunctionExpr(this, params); }
instantiate(params: Expression[], type: Type = null): InstantiateExpr {
return new InstantiateExpr(this, params, type);
}
conditional(trueCase: Expression, falseCase: Expression = null): ConditionalExpr {
return new ConditionalExpr(this, trueCase, falseCase);
}
equals(rhs: Expression): BinaryOperatorExpr {
return new BinaryOperatorExpr(BinaryOperator.Equals, this, rhs);
}
notEquals(rhs: Expression): BinaryOperatorExpr {
return new BinaryOperatorExpr(BinaryOperator.NotEquals, this, rhs);
}
identical(rhs: Expression): BinaryOperatorExpr {
return new BinaryOperatorExpr(BinaryOperator.Identical, this, rhs);
}
notIdentical(rhs: Expression): BinaryOperatorExpr {
return new BinaryOperatorExpr(BinaryOperator.NotIdentical, this, rhs);
}
minus(rhs: Expression): BinaryOperatorExpr {
return new BinaryOperatorExpr(BinaryOperator.Minus, this, rhs);
}
plus(rhs: Expression): BinaryOperatorExpr {
return new BinaryOperatorExpr(BinaryOperator.Plus, this, rhs);
}
divide(rhs: Expression): BinaryOperatorExpr {
return new BinaryOperatorExpr(BinaryOperator.Divide, this, rhs);
}
multiply(rhs: Expression): BinaryOperatorExpr {
return new BinaryOperatorExpr(BinaryOperator.Multiply, this, rhs);
}
modulo(rhs: Expression): BinaryOperatorExpr {
return new BinaryOperatorExpr(BinaryOperator.Modulo, this, rhs);
}
and(rhs: Expression): BinaryOperatorExpr {
return new BinaryOperatorExpr(BinaryOperator.And, this, rhs);
}
or(rhs: Expression): BinaryOperatorExpr {
return new BinaryOperatorExpr(BinaryOperator.Or, this, rhs);
}
lower(rhs: Expression): BinaryOperatorExpr {
return new BinaryOperatorExpr(BinaryOperator.Lower, this, rhs);
}
lowerEquals(rhs: Expression): BinaryOperatorExpr {
return new BinaryOperatorExpr(BinaryOperator.LowerEquals, this, rhs);
}
bigger(rhs: Expression): BinaryOperatorExpr {
return new BinaryOperatorExpr(BinaryOperator.Bigger, this, rhs);
}
biggerEquals(rhs: Expression): BinaryOperatorExpr {
return new BinaryOperatorExpr(BinaryOperator.BiggerEquals, this, rhs);
}
isBlank(): Expression {
// Note: We use equals by purpose here to compare to null and undefined in JS.
return this.equals(NULL_EXPR);
}
cast(type: Type): Expression { return new CastExpr(this, type); }
toStmt(): Statement { return new ExpressionStatement(this); }
}
export enum BuiltinVar {
This,
Super,
CatchError,
CatchStack
}
export class ReadVarExpr extends Expression {
public name;
public builtin: BuiltinVar;
constructor(name: string | BuiltinVar, type: Type = null) {
super(type);
if (isString(name)) {
this.name = <string>name;
this.builtin = null;
} else {
this.name = null;
this.builtin = <BuiltinVar>name;
}
}
visitExpression(visitor: ExpressionVisitor, context: any): any {
return visitor.visitReadVarExpr(this, context);
}
set(value: Expression): WriteVarExpr { return new WriteVarExpr(this.name, value); }
}
export class WriteVarExpr extends Expression {
public value: Expression;
constructor(public name: string, value: Expression, type: Type = null) {
super(isPresent(type) ? type : value.type);
this.value = value;
}
visitExpression(visitor: ExpressionVisitor, context: any): any {
return visitor.visitWriteVarExpr(this, context);
}
toDeclStmt(type: Type = null, modifiers: StmtModifier[] = null): DeclareVarStmt {
return new DeclareVarStmt(this.name, this.value, type, modifiers);
}
}
export class WriteKeyExpr extends Expression {
public value: Expression;
constructor(public receiver: Expression, public index: Expression, value: Expression,
type: Type = null) {
super(isPresent(type) ? type : value.type);
this.value = value;
}
visitExpression(visitor: ExpressionVisitor, context: any): any {
return visitor.visitWriteKeyExpr(this, context);
}
}
export class WritePropExpr extends Expression {
public value: Expression;
constructor(public receiver: Expression, public name: string, value: Expression,
type: Type = null) {
super(isPresent(type) ? type : value.type);
this.value = value;
}
visitExpression(visitor: ExpressionVisitor, context: any): any {
return visitor.visitWritePropExpr(this, context);
}
}
export enum BuiltinMethod {
ConcatArray,
SubscribeObservable,
bind
}
export class InvokeMethodExpr extends Expression {
public name: string;
public builtin: BuiltinMethod;
constructor(public receiver: Expression, method: string | BuiltinMethod,
public args: Expression[], type: Type = null) {
super(type);
if (isString(method)) {
this.name = <string>method;
this.builtin = null;
} else {
this.name = null;
this.builtin = <BuiltinMethod>method;
}
}
visitExpression(visitor: ExpressionVisitor, context: any): any {
return visitor.visitInvokeMethodExpr(this, context);
}
}
export class InvokeFunctionExpr extends Expression {
constructor(public fn: Expression, public args: Expression[], type: Type = null) { super(type); }
visitExpression(visitor: ExpressionVisitor, context: any): any {
return visitor.visitInvokeFunctionExpr(this, context);
}
}
export class InstantiateExpr extends Expression {
constructor(public classExpr: Expression, public args: Expression[], type?: Type) { super(type); }
visitExpression(visitor: ExpressionVisitor, context: any): any {
return visitor.visitInstantiateExpr(this, context);
}
}
export class LiteralExpr extends Expression {
constructor(public value: any, type: Type = null) { super(type); }
visitExpression(visitor: ExpressionVisitor, context: any): any {
return visitor.visitLiteralExpr(this, context);
}
}
export class ExternalExpr extends Expression {
constructor(public value: CompileIdentifierMetadata, type: Type = null,
public typeParams: Type[] = null) {
super(type);
}
visitExpression(visitor: ExpressionVisitor, context: any): any {
return visitor.visitExternalExpr(this, context);
}
}
export class ConditionalExpr extends Expression {
public trueCase: Expression;
constructor(public condition: Expression, trueCase: Expression,
public falseCase: Expression = null, type: Type = null) {
super(isPresent(type) ? type : trueCase.type);
this.trueCase = trueCase;
}
visitExpression(visitor: ExpressionVisitor, context: any): any {
return visitor.visitConditionalExpr(this, context);
}
}
export class NotExpr extends Expression {
constructor(public condition: Expression) { super(BOOL_TYPE); }
visitExpression(visitor: ExpressionVisitor, context: any): any {
return visitor.visitNotExpr(this, context);
}
}
export class CastExpr extends Expression {
constructor(public value: Expression, type: Type) { super(type); }
visitExpression(visitor: ExpressionVisitor, context: any): any {
return visitor.visitCastExpr(this, context);
}
}
export class FnParam {
constructor(public name: string, public type: Type = null) {}
}
export class FunctionExpr extends Expression {
constructor(public params: FnParam[], public statements: Statement[], type: Type = null) {
super(type);
}
visitExpression(visitor: ExpressionVisitor, context: any): any {
return visitor.visitFunctionExpr(this, context);
}
toDeclStmt(name: string, modifiers: StmtModifier[] = null): DeclareFunctionStmt {
return new DeclareFunctionStmt(name, this.params, this.statements, this.type, modifiers);
}
}
export class BinaryOperatorExpr extends Expression {
public lhs: Expression;
constructor(public operator: BinaryOperator, lhs: Expression, public rhs: Expression,
type: Type = null) {
super(isPresent(type) ? type : lhs.type);
this.lhs = lhs;
}
visitExpression(visitor: ExpressionVisitor, context: any): any {
return visitor.visitBinaryOperatorExpr(this, context);
}
}
export class ReadPropExpr extends Expression {
constructor(public receiver: Expression, public name: string, type: Type = null) { super(type); }
visitExpression(visitor: ExpressionVisitor, context: any): any {
return visitor.visitReadPropExpr(this, context);
}
set(value: Expression): WritePropExpr {
return new WritePropExpr(this.receiver, this.name, value);
}
}
export class ReadKeyExpr extends Expression {
constructor(public receiver: Expression, public index: Expression, type: Type = null) {
super(type);
}
visitExpression(visitor: ExpressionVisitor, context: any): any {
return visitor.visitReadKeyExpr(this, context);
}
set(value: Expression): WriteKeyExpr {
return new WriteKeyExpr(this.receiver, this.index, value);
}
}
export class LiteralArrayExpr extends Expression {
public entries: Expression[];
constructor(entries: Expression[], type: Type = null) {
super(type);
this.entries = entries;
}
visitExpression(visitor: ExpressionVisitor, context: any): any {
return visitor.visitLiteralArrayExpr(this, context);
}
}
export class LiteralMapExpr extends Expression {
public valueType: Type = null;
;
constructor(public entries: Array<Array<string | Expression>>, type: MapType = null) {
super(type);
if (isPresent(type)) {
this.valueType = type.valueType;
}
}
visitExpression(visitor: ExpressionVisitor, context: any): any {
return visitor.visitLiteralMapExpr(this, context);
}
}
export interface ExpressionVisitor {
visitReadVarExpr(ast: ReadVarExpr, context: any): any;
visitWriteVarExpr(expr: WriteVarExpr, context: any): any;
visitWriteKeyExpr(expr: WriteKeyExpr, context: any): any;
visitWritePropExpr(expr: WritePropExpr, context: any): any;
visitInvokeMethodExpr(ast: InvokeMethodExpr, context: any): any;
visitInvokeFunctionExpr(ast: InvokeFunctionExpr, context: any): any;
visitInstantiateExpr(ast: InstantiateExpr, context: any): any;
visitLiteralExpr(ast: LiteralExpr, context: any): any;
visitExternalExpr(ast: ExternalExpr, context: any): any;
visitConditionalExpr(ast: ConditionalExpr, context: any): any;
visitNotExpr(ast: NotExpr, context: any): any;
visitCastExpr(ast: CastExpr, context: any): any;
visitFunctionExpr(ast: FunctionExpr, context: any): any;
visitBinaryOperatorExpr(ast: BinaryOperatorExpr, context: any): any;
visitReadPropExpr(ast: ReadPropExpr, context: any): any;
visitReadKeyExpr(ast: ReadKeyExpr, context: any): any;
visitLiteralArrayExpr(ast: LiteralArrayExpr, context: any): any;
visitLiteralMapExpr(ast: LiteralMapExpr, context: any): any;
}
export var THIS_EXPR = new ReadVarExpr(BuiltinVar.This);
export var SUPER_EXPR = new ReadVarExpr(BuiltinVar.Super);
export var CATCH_ERROR_VAR = new ReadVarExpr(BuiltinVar.CatchError);
export var CATCH_STACK_VAR = new ReadVarExpr(BuiltinVar.CatchStack);
export var NULL_EXPR = new LiteralExpr(null, null);
//// Statements
export enum StmtModifier {
Final,
Private
}
export abstract class Statement {
constructor(public modifiers: StmtModifier[] = null) {
if (isBlank(modifiers)) {
this.modifiers = [];
}
}
abstract visitStatement(visitor: StatementVisitor, context: any): any;
hasModifier(modifier: StmtModifier): boolean { return this.modifiers.indexOf(modifier) !== -1; }
}
export class DeclareVarStmt extends Statement {
public type: Type;
constructor(public name: string, public value: Expression, type: Type = null,
modifiers: StmtModifier[] = null) {
super(modifiers);
this.type = isPresent(type) ? type : value.type;
}
visitStatement(visitor: StatementVisitor, context: any): any {
return visitor.visitDeclareVarStmt(this, context);
}
}
export class DeclareFunctionStmt extends Statement {
constructor(public name: string, public params: FnParam[], public statements: Statement[],
public type: Type = null, modifiers: StmtModifier[] = null) {
super(modifiers);
}
visitStatement(visitor: StatementVisitor, context: any): any {
return visitor.visitDeclareFunctionStmt(this, context);
}
}
export class ExpressionStatement extends Statement {
constructor(public expr: Expression) { super(); }
visitStatement(visitor: StatementVisitor, context: any): any {
return visitor.visitExpressionStmt(this, context);
}
}
export class ReturnStatement extends Statement {
constructor(public value: Expression) { super(); }
visitStatement(visitor: StatementVisitor, context: any): any {
return visitor.visitReturnStmt(this, context);
}
}
export class AbstractClassPart {
constructor(public type: Type = null, public modifiers: StmtModifier[]) {
if (isBlank(modifiers)) {
this.modifiers = [];
}
}
hasModifier(modifier: StmtModifier): boolean { return this.modifiers.indexOf(modifier) !== -1; }
}
export class ClassField extends AbstractClassPart {
constructor(public name: string, type: Type = null, modifiers: StmtModifier[] = null) {
super(type, modifiers);
}
}
export class ClassMethod extends AbstractClassPart {
constructor(public name: string, public params: FnParam[], public body: Statement[],
type: Type = null, modifiers: StmtModifier[] = null) {
super(type, modifiers);
}
}
export class ClassGetter extends AbstractClassPart {
constructor(public name: string, public body: Statement[], type: Type = null,
modifiers: StmtModifier[] = null) {
super(type, modifiers);
}
}
export class ClassStmt extends Statement {
constructor(public name: string, public parent: Expression, public fields: ClassField[],
public getters: ClassGetter[], public constructorMethod: ClassMethod,
public methods: ClassMethod[], modifiers: StmtModifier[] = null) {
super(modifiers);
}
visitStatement(visitor: StatementVisitor, context: any): any {
return visitor.visitDeclareClassStmt(this, context);
}
}
export class IfStmt extends Statement {
constructor(public condition: Expression, public trueCase: Statement[],
public falseCase: Statement[] = /*@ts2dart_const*/[]) {
super();
}
visitStatement(visitor: StatementVisitor, context: any): any {
return visitor.visitIfStmt(this, context);
}
}
export class CommentStmt extends Statement {
constructor(public comment: string) { super(); }
visitStatement(visitor: StatementVisitor, context: any): any {
return visitor.visitCommentStmt(this, context);
}
}
export class TryCatchStmt extends Statement {
constructor(public bodyStmts: Statement[], public catchStmts: Statement[]) { super(); }
visitStatement(visitor: StatementVisitor, context: any): any {
return visitor.visitTryCatchStmt(this, context);
}
}
export class ThrowStmt extends Statement {
constructor(public error: Expression) { super(); }
visitStatement(visitor: StatementVisitor, context: any): any {
return visitor.visitThrowStmt(this, context);
}
}
export interface StatementVisitor {
visitDeclareVarStmt(stmt: DeclareVarStmt, context: any): any;
visitDeclareFunctionStmt(stmt: DeclareFunctionStmt, context: any): any;
visitExpressionStmt(stmt: ExpressionStatement, context: any): any;
visitReturnStmt(stmt: ReturnStatement, context: any): any;
visitDeclareClassStmt(stmt: ClassStmt, context: any): any;
visitIfStmt(stmt: IfStmt, context: any): any;
visitTryCatchStmt(stmt: TryCatchStmt, context: any): any;
visitThrowStmt(stmt: ThrowStmt, context: any): any;
visitCommentStmt(stmt: CommentStmt, context: any): any;
}
export class ExpressionTransformer implements StatementVisitor, ExpressionVisitor {
visitReadVarExpr(ast: ReadVarExpr, context: any): any { return ast; }
visitWriteVarExpr(expr: WriteVarExpr, context: any): any {
return new WriteVarExpr(expr.name, expr.value.visitExpression(this, context));
}
visitWriteKeyExpr(expr: WriteKeyExpr, context: any): any {
return new WriteKeyExpr(expr.receiver.visitExpression(this, context),
expr.index.visitExpression(this, context),
expr.value.visitExpression(this, context));
}
visitWritePropExpr(expr: WritePropExpr, context: any): any {
return new WritePropExpr(expr.receiver.visitExpression(this, context), expr.name,
expr.value.visitExpression(this, context));
}
visitInvokeMethodExpr(ast: InvokeMethodExpr, context: any): any {
var method = isPresent(ast.builtin) ? ast.builtin : ast.name;
return new InvokeMethodExpr(ast.receiver.visitExpression(this, context), method,
this.visitAllExpressions(ast.args, context), ast.type);
}
visitInvokeFunctionExpr(ast: InvokeFunctionExpr, context: any): any {
return new InvokeFunctionExpr(ast.fn.visitExpression(this, context),
this.visitAllExpressions(ast.args, context), ast.type);
}
visitInstantiateExpr(ast: InstantiateExpr, context: any): any {
return new InstantiateExpr(ast.classExpr.visitExpression(this, context),
this.visitAllExpressions(ast.args, context), ast.type);
}
visitLiteralExpr(ast: LiteralExpr, context: any): any { return ast; }
visitExternalExpr(ast: ExternalExpr, context: any): any { return ast; }
visitConditionalExpr(ast: ConditionalExpr, context: any): any {
return new ConditionalExpr(ast.condition.visitExpression(this, context),
ast.trueCase.visitExpression(this, context),
ast.falseCase.visitExpression(this, context));
}
visitNotExpr(ast: NotExpr, context: any): any {
return new NotExpr(ast.condition.visitExpression(this, context));
}
visitCastExpr(ast: CastExpr, context: any): any {
return new CastExpr(ast.value.visitExpression(this, context), context);
}
visitFunctionExpr(ast: FunctionExpr, context: any): any {
// Don't descend into nested functions
return ast;
}
visitBinaryOperatorExpr(ast: BinaryOperatorExpr, context: any): any {
return new BinaryOperatorExpr(ast.operator, ast.lhs.visitExpression(this, context),
ast.rhs.visitExpression(this, context), ast.type);
}
visitReadPropExpr(ast: ReadPropExpr, context: any): any {
return new ReadPropExpr(ast.receiver.visitExpression(this, context), ast.name, ast.type);
}
visitReadKeyExpr(ast: ReadKeyExpr, context: any): any {
return new ReadKeyExpr(ast.receiver.visitExpression(this, context),
ast.index.visitExpression(this, context), ast.type);
}
visitLiteralArrayExpr(ast: LiteralArrayExpr, context: any): any {
return new LiteralArrayExpr(this.visitAllExpressions(ast.entries, context));
}
visitLiteralMapExpr(ast: LiteralMapExpr, context: any): any {
return new LiteralMapExpr(ast.entries.map(
(entry) => [entry[0], (<Expression>entry[1]).visitExpression(this, context)]));
}
visitAllExpressions(exprs: Expression[], context: any): Expression[] {
return exprs.map(expr => expr.visitExpression(this, context));
}
visitDeclareVarStmt(stmt: DeclareVarStmt, context: any): any {
return new DeclareVarStmt(stmt.name, stmt.value.visitExpression(this, context), stmt.type,
stmt.modifiers);
}
visitDeclareFunctionStmt(stmt: DeclareFunctionStmt, context: any): any {
// Don't descend into nested functions
return stmt;
}
visitExpressionStmt(stmt: ExpressionStatement, context: any): any {
return new ExpressionStatement(stmt.expr.visitExpression(this, context));
}
visitReturnStmt(stmt: ReturnStatement, context: any): any {
return new ReturnStatement(stmt.value.visitExpression(this, context));
}
visitDeclareClassStmt(stmt: ClassStmt, context: any): any {
// Don't descend into nested functions
return stmt;
}
visitIfStmt(stmt: IfStmt, context: any): any {
return new IfStmt(stmt.condition.visitExpression(this, context),
this.visitAllStatements(stmt.trueCase, context),
this.visitAllStatements(stmt.falseCase, context));
}
visitTryCatchStmt(stmt: TryCatchStmt, context: any): any {
return new TryCatchStmt(this.visitAllStatements(stmt.bodyStmts, context),
this.visitAllStatements(stmt.catchStmts, context));
}
visitThrowStmt(stmt: ThrowStmt, context: any): any {
return new ThrowStmt(stmt.error.visitExpression(this, context));
}
visitCommentStmt(stmt: CommentStmt, context: any): any { return stmt; }
visitAllStatements(stmts: Statement[], context: any): Statement[] {
return stmts.map(stmt => stmt.visitStatement(this, context));
}
}
export class RecursiveExpressionVisitor implements StatementVisitor, ExpressionVisitor {
visitReadVarExpr(ast: ReadVarExpr, context: any): any { return ast; }
visitWriteVarExpr(expr: WriteVarExpr, context: any): any {
expr.value.visitExpression(this, context);
return expr;
}
visitWriteKeyExpr(expr: WriteKeyExpr, context: any): any {
expr.receiver.visitExpression(this, context);
expr.index.visitExpression(this, context);
expr.value.visitExpression(this, context);
return expr;
}
visitWritePropExpr(expr: WritePropExpr, context: any): any {
expr.receiver.visitExpression(this, context);
expr.value.visitExpression(this, context);
return expr;
}
visitInvokeMethodExpr(ast: InvokeMethodExpr, context: any): any {
ast.receiver.visitExpression(this, context);
this.visitAllExpressions(ast.args, context);
return ast;
}
visitInvokeFunctionExpr(ast: InvokeFunctionExpr, context: any): any {
ast.fn.visitExpression(this, context);
this.visitAllExpressions(ast.args, context);
return ast;
}
visitInstantiateExpr(ast: InstantiateExpr, context: any): any {
ast.classExpr.visitExpression(this, context);
this.visitAllExpressions(ast.args, context);
return ast;
}
visitLiteralExpr(ast: LiteralExpr, context: any): any { return ast; }
visitExternalExpr(ast: ExternalExpr, context: any): any { return ast; }
visitConditionalExpr(ast: ConditionalExpr, context: any): any {
ast.condition.visitExpression(this, context);
ast.trueCase.visitExpression(this, context);
ast.falseCase.visitExpression(this, context);
return ast;
}
visitNotExpr(ast: NotExpr, context: any): any {
ast.condition.visitExpression(this, context);
return ast;
}
visitCastExpr(ast: CastExpr, context: any): any {
ast.value.visitExpression(this, context);
return ast;
}
visitFunctionExpr(ast: FunctionExpr, context: any): any { return ast; }
visitBinaryOperatorExpr(ast: BinaryOperatorExpr, context: any): any {
ast.lhs.visitExpression(this, context);
ast.rhs.visitExpression(this, context);
return ast;
}
visitReadPropExpr(ast: ReadPropExpr, context: any): any {
ast.receiver.visitExpression(this, context);
return ast;
}
visitReadKeyExpr(ast: ReadKeyExpr, context: any): any {
ast.receiver.visitExpression(this, context);
ast.index.visitExpression(this, context);
return ast;
}
visitLiteralArrayExpr(ast: LiteralArrayExpr, context: any): any {
this.visitAllExpressions(ast.entries, context);
return ast;
}
visitLiteralMapExpr(ast: LiteralMapExpr, context: any): any {
ast.entries.forEach((entry) => (<Expression>entry[1]).visitExpression(this, context));
return ast;
}
visitAllExpressions(exprs: Expression[], context: any): void {
exprs.forEach(expr => expr.visitExpression(this, context));
}
visitDeclareVarStmt(stmt: DeclareVarStmt, context: any): any {
stmt.value.visitExpression(this, context);
return stmt;
}
visitDeclareFunctionStmt(stmt: DeclareFunctionStmt, context: any): any {
// Don't descend into nested functions
return stmt;
}
visitExpressionStmt(stmt: ExpressionStatement, context: any): any {
stmt.expr.visitExpression(this, context);
return stmt;
}
visitReturnStmt(stmt: ReturnStatement, context: any): any {
stmt.value.visitExpression(this, context);
return stmt;
}
visitDeclareClassStmt(stmt: ClassStmt, context: any): any {
// Don't descend into nested functions
return stmt;
}
visitIfStmt(stmt: IfStmt, context: any): any {
stmt.condition.visitExpression(this, context);
this.visitAllStatements(stmt.trueCase, context);
this.visitAllStatements(stmt.falseCase, context);
return stmt;
}
visitTryCatchStmt(stmt: TryCatchStmt, context: any): any {
this.visitAllStatements(stmt.bodyStmts, context);
this.visitAllStatements(stmt.catchStmts, context);
return stmt;
}
visitThrowStmt(stmt: ThrowStmt, context: any): any {
stmt.error.visitExpression(this, context);
return stmt;
}
visitCommentStmt(stmt: CommentStmt, context: any): any { return stmt; }
visitAllStatements(stmts: Statement[], context: any): void {
stmts.forEach(stmt => stmt.visitStatement(this, context));
}
}
export function replaceVarInExpression(varName: string, newValue: Expression,
expression: Expression): Expression {
var transformer = new _ReplaceVariableTransformer(varName, newValue);
return expression.visitExpression(transformer, null);
}
class _ReplaceVariableTransformer extends ExpressionTransformer {
constructor(private _varName: string, private _newValue: Expression) { super(); }
visitReadVarExpr(ast: ReadVarExpr, context: any): any {
return ast.name == this._varName ? this._newValue : ast;
}
}
export function findReadVarNames(stmts: Statement[]): Set<string> {
var finder = new _VariableFinder();
finder.visitAllStatements(stmts, null);
return finder.varNames;
}
class _VariableFinder extends RecursiveExpressionVisitor {
varNames = new Set<string>();
visitReadVarExpr(ast: ReadVarExpr, context: any): any {
this.varNames.add(ast.name);
return null;
}
}
export function variable(name: string, type: Type = null): ReadVarExpr {
return new ReadVarExpr(name, type);
}
export function importExpr(id: CompileIdentifierMetadata, typeParams: Type[] = null): ExternalExpr {
return new ExternalExpr(id, null, typeParams);
}
export function importType(id: CompileIdentifierMetadata, typeParams: Type[] = null,
typeModifiers: TypeModifier[] = null): ExternalType {
return isPresent(id) ? new ExternalType(id, typeParams, typeModifiers) : null;
}
export function literal(value: any, type: Type = null): LiteralExpr {
return new LiteralExpr(value, type);
}
export function literalArr(values: Expression[], type: Type = null): LiteralArrayExpr {
return new LiteralArrayExpr(values, type);
}
export function literalMap(values: Array<Array<string | Expression>>,
type: MapType = null): LiteralMapExpr {
return new LiteralMapExpr(values, type);
}
export function not(expr: Expression): NotExpr {
return new NotExpr(expr);
}
export function fn(params: FnParam[], body: Statement[], type: Type = null): FunctionExpr {
return new FunctionExpr(params, body, type);
}

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@ -0,0 +1,422 @@
import {
isPresent,
isBlank,
isString,
evalExpression,
IS_DART,
FunctionWrapper
} from 'angular2/src/facade/lang';
import {ObservableWrapper} from 'angular2/src/facade/async';
import * as o from './output_ast';
import {reflector} from 'angular2/src/core/reflection/reflection';
import {BaseException, unimplemented} from 'angular2/src/facade/exceptions';
import {MapWrapper, ListWrapper} from 'angular2/src/facade/collection';
import {debugOutputAstAsDart} from './dart_emitter';
import {debugOutputAstAsTypeScript} from './ts_emitter';
export function interpretStatements(statements: o.Statement[], resultVar: string,
instanceFactory: InstanceFactory): any {
var stmtsWithReturn = statements.concat([new o.ReturnStatement(o.variable(resultVar))]);
var ctx = new _ExecutionContext(null, null, null, null, new Map<string, any>(),
new Map<string, any>(), new Map<string, Function>(),
new Map<string, Function>(), instanceFactory);
var visitor = new StatementInterpreter();
var result = visitor.visitAllStatements(stmtsWithReturn, ctx);
return isPresent(result) ? result.value : null;
}
export interface InstanceFactory {
createInstance(superClass: any, clazz: any, constructorArgs: any[], props: Map<string, any>,
getters: Map<string, Function>, methods: Map<string, Function>): DynamicInstance;
}
export abstract class DynamicInstance {
get props(): Map<string, any> { return unimplemented(); }
get getters(): Map<string, Function> { return unimplemented(); }
get methods(): Map<string, any> { return unimplemented(); }
get clazz(): any { return unimplemented(); }
}
function isDynamicInstance(instance: any): any {
if (IS_DART) {
return instance instanceof DynamicInstance;
} else {
return isPresent(instance) && isPresent(instance.props) && isPresent(instance.getters) &&
isPresent(instance.methods);
}
}
function _executeFunctionStatements(varNames: string[], varValues: any[], statements: o.Statement[],
ctx: _ExecutionContext, visitor: StatementInterpreter): any {
var childCtx = ctx.createChildWihtLocalVars();
for (var i = 0; i < varNames.length; i++) {
childCtx.vars.set(varNames[i], varValues[i]);
}
var result = visitor.visitAllStatements(statements, childCtx);
return isPresent(result) ? result.value : null;
}
class _ExecutionContext {
constructor(public parent: _ExecutionContext, public superClass: any, public superInstance: any,
public className: string, public vars: Map<string, any>,
public props: Map<string, any>, public getters: Map<string, Function>,
public methods: Map<string, Function>, public instanceFactory: InstanceFactory) {}
createChildWihtLocalVars(): _ExecutionContext {
return new _ExecutionContext(this, this.superClass, this.superInstance, this.className,
new Map<string, any>(), this.props, this.getters, this.methods,
this.instanceFactory);
}
}
class ReturnValue {
constructor(public value: any) {}
}
class _DynamicClass {
constructor(private _classStmt: o.ClassStmt, private _ctx: _ExecutionContext,
private _visitor: StatementInterpreter) {}
instantiate(args: any[]): DynamicInstance {
var props = new Map<string, any>();
var getters = new Map<string, Function>();
var methods = new Map<string, Function>();
var superClass = this._classStmt.parent.visitExpression(this._visitor, this._ctx);
var instanceCtx =
new _ExecutionContext(this._ctx, superClass, null, this._classStmt.name, this._ctx.vars,
props, getters, methods, this._ctx.instanceFactory);
this._classStmt.fields.forEach((field: o.ClassField) => { props.set(field.name, null); });
this._classStmt.getters.forEach((getter: o.ClassGetter) => {
getters.set(getter.name, () => _executeFunctionStatements([], [], getter.body, instanceCtx,
this._visitor));
});
this._classStmt.methods.forEach((method: o.ClassMethod) => {
var paramNames = method.params.map(param => param.name);
methods.set(method.name, _declareFn(paramNames, method.body, instanceCtx, this._visitor));
});
var ctorParamNames = this._classStmt.constructorMethod.params.map(param => param.name);
_executeFunctionStatements(ctorParamNames, args, this._classStmt.constructorMethod.body,
instanceCtx, this._visitor);
return instanceCtx.superInstance;
}
debugAst(): string { return this._visitor.debugAst(this._classStmt); }
}
class StatementInterpreter implements o.StatementVisitor, o.ExpressionVisitor {
debugAst(ast: o.Expression | o.Statement | o.Type): string {
return IS_DART ? debugOutputAstAsDart(ast) : debugOutputAstAsTypeScript(ast);
}
visitDeclareVarStmt(stmt: o.DeclareVarStmt, ctx: _ExecutionContext): any {
ctx.vars.set(stmt.name, stmt.value.visitExpression(this, ctx));
return null;
}
visitWriteVarExpr(expr: o.WriteVarExpr, ctx: _ExecutionContext): any {
var value = expr.value.visitExpression(this, ctx);
var currCtx = ctx;
while (currCtx != null) {
if (currCtx.vars.has(expr.name)) {
currCtx.vars.set(expr.name, value);
return value;
}
currCtx = currCtx.parent;
}
throw new BaseException(`Not declared variable ${expr.name}`);
}
visitReadVarExpr(ast: o.ReadVarExpr, ctx: _ExecutionContext): any {
var varName = ast.name;
if (isPresent(ast.builtin)) {
switch (ast.builtin) {
case o.BuiltinVar.Super:
case o.BuiltinVar.This:
return ctx.superInstance;
case o.BuiltinVar.CatchError:
varName = CATCH_ERROR_VAR;
break;
case o.BuiltinVar.CatchStack:
varName = CATCH_STACK_VAR;
break;
default:
throw new BaseException(`Unknown builtin variable ${ast.builtin}`);
}
}
var currCtx = ctx;
while (currCtx != null) {
if (currCtx.vars.has(varName)) {
return currCtx.vars.get(varName);
}
currCtx = currCtx.parent;
}
throw new BaseException(`Not declared variable ${varName}`);
}
visitWriteKeyExpr(expr: o.WriteKeyExpr, ctx: _ExecutionContext): any {
var receiver = expr.receiver.visitExpression(this, ctx);
var index = expr.index.visitExpression(this, ctx);
var value = expr.value.visitExpression(this, ctx);
receiver[index] = value;
return value;
}
visitWritePropExpr(expr: o.WritePropExpr, ctx: _ExecutionContext): any {
var receiver = expr.receiver.visitExpression(this, ctx);
var value = expr.value.visitExpression(this, ctx);
if (isDynamicInstance(receiver)) {
var di = <DynamicInstance>receiver;
if (di.props.has(expr.name)) {
di.props.set(expr.name, value);
} else {
reflector.setter(expr.name)(receiver, value);
}
} else {
reflector.setter(expr.name)(receiver, value);
}
return value;
}
visitInvokeMethodExpr(expr: o.InvokeMethodExpr, ctx: _ExecutionContext): any {
var receiver = expr.receiver.visitExpression(this, ctx);
var args = this.visitAllExpressions(expr.args, ctx);
var result;
if (isPresent(expr.builtin)) {
switch (expr.builtin) {
case o.BuiltinMethod.ConcatArray:
result = ListWrapper.concat(receiver, args[0]);
break;
case o.BuiltinMethod.SubscribeObservable:
result = ObservableWrapper.subscribe(receiver, args[0]);
break;
case o.BuiltinMethod.bind:
if (IS_DART) {
result = receiver;
} else {
result = receiver.bind(args[0]);
}
break;
default:
throw new BaseException(`Unknown builtin method ${expr.builtin}`);
}
} else if (isDynamicInstance(receiver)) {
var di = <DynamicInstance>receiver;
if (di.methods.has(expr.name)) {
result = FunctionWrapper.apply(di.methods.get(expr.name), args);
} else {
result = reflector.method(expr.name)(receiver, args);
}
} else {
result = reflector.method(expr.name)(receiver, args);
}
return result;
}
visitInvokeFunctionExpr(stmt: o.InvokeFunctionExpr, ctx: _ExecutionContext): any {
var args = this.visitAllExpressions(stmt.args, ctx);
var fnExpr = stmt.fn;
if (fnExpr instanceof o.ReadVarExpr && fnExpr.builtin === o.BuiltinVar.Super) {
ctx.superInstance = ctx.instanceFactory.createInstance(ctx.superClass, ctx.className, args,
ctx.props, ctx.getters, ctx.methods);
ctx.parent.superInstance = ctx.superInstance;
return null;
} else {
var fn = stmt.fn.visitExpression(this, ctx);
return FunctionWrapper.apply(fn, args);
}
}
visitReturnStmt(stmt: o.ReturnStatement, ctx: _ExecutionContext): any {
return new ReturnValue(stmt.value.visitExpression(this, ctx));
}
visitDeclareClassStmt(stmt: o.ClassStmt, ctx: _ExecutionContext): any {
var clazz = new _DynamicClass(stmt, ctx, this);
ctx.vars.set(stmt.name, clazz);
return null;
}
visitExpressionStmt(stmt: o.ExpressionStatement, ctx: _ExecutionContext): any {
return stmt.expr.visitExpression(this, ctx);
}
visitIfStmt(stmt: o.IfStmt, ctx: _ExecutionContext): any {
var condition = stmt.condition.visitExpression(this, ctx);
if (condition) {
return this.visitAllStatements(stmt.trueCase, ctx);
} else if (isPresent(stmt.falseCase)) {
return this.visitAllStatements(stmt.falseCase, ctx);
}
return null;
}
visitTryCatchStmt(stmt: o.TryCatchStmt, ctx: _ExecutionContext): any {
try {
return this.visitAllStatements(stmt.bodyStmts, ctx);
} catch (e) {
var childCtx = ctx.createChildWihtLocalVars();
childCtx.vars.set(CATCH_ERROR_VAR, e);
childCtx.vars.set(CATCH_STACK_VAR, e.stack);
return this.visitAllStatements(stmt.catchStmts, childCtx);
}
}
visitThrowStmt(stmt: o.ThrowStmt, ctx: _ExecutionContext): any {
throw stmt.error.visitExpression(this, ctx);
}
visitCommentStmt(stmt: o.CommentStmt, context?: any): any { return null; }
visitInstantiateExpr(ast: o.InstantiateExpr, ctx: _ExecutionContext): any {
var args = this.visitAllExpressions(ast.args, ctx);
var clazz = ast.classExpr.visitExpression(this, ctx);
if (clazz instanceof _DynamicClass) {
return clazz.instantiate(args);
} else {
return FunctionWrapper.apply(reflector.factory(clazz), args);
}
}
visitLiteralExpr(ast: o.LiteralExpr, ctx: _ExecutionContext): any { return ast.value; }
visitExternalExpr(ast: o.ExternalExpr, ctx: _ExecutionContext): any { return ast.value.runtime; }
visitConditionalExpr(ast: o.ConditionalExpr, ctx: _ExecutionContext): any {
if (ast.condition.visitExpression(this, ctx)) {
return ast.trueCase.visitExpression(this, ctx);
} else if (isPresent(ast.falseCase)) {
return ast.falseCase.visitExpression(this, ctx);
}
return null;
}
visitNotExpr(ast: o.NotExpr, ctx: _ExecutionContext): any {
return !ast.condition.visitExpression(this, ctx);
}
visitCastExpr(ast: o.CastExpr, ctx: _ExecutionContext): any {
return ast.value.visitExpression(this, ctx);
}
visitFunctionExpr(ast: o.FunctionExpr, ctx: _ExecutionContext): any {
var paramNames = ast.params.map((param) => param.name);
return _declareFn(paramNames, ast.statements, ctx, this);
}
visitDeclareFunctionStmt(stmt: o.DeclareFunctionStmt, ctx: _ExecutionContext): any {
var paramNames = stmt.params.map((param) => param.name);
ctx.vars.set(stmt.name, _declareFn(paramNames, stmt.statements, ctx, this));
return null;
}
visitBinaryOperatorExpr(ast: o.BinaryOperatorExpr, ctx: _ExecutionContext): any {
var lhs = () => ast.lhs.visitExpression(this, ctx);
var rhs = () => ast.rhs.visitExpression(this, ctx);
switch (ast.operator) {
case o.BinaryOperator.Equals:
return lhs() == rhs();
case o.BinaryOperator.Identical:
return lhs() === rhs();
case o.BinaryOperator.NotEquals:
return lhs() != rhs();
case o.BinaryOperator.NotIdentical:
return lhs() !== rhs();
case o.BinaryOperator.And:
return lhs() && rhs();
case o.BinaryOperator.Or:
return lhs() || rhs();
case o.BinaryOperator.Plus:
return lhs() + rhs();
case o.BinaryOperator.Minus:
return lhs() - rhs();
case o.BinaryOperator.Divide:
return lhs() / rhs();
case o.BinaryOperator.Multiply:
return lhs() * rhs();
case o.BinaryOperator.Modulo:
return lhs() % rhs();
case o.BinaryOperator.Lower:
return lhs() < rhs();
case o.BinaryOperator.LowerEquals:
return lhs() <= rhs();
case o.BinaryOperator.Bigger:
return lhs() > rhs();
case o.BinaryOperator.BiggerEquals:
return lhs() >= rhs();
default:
throw new BaseException(`Unknown operator ${ast.operator}`);
}
}
visitReadPropExpr(ast: o.ReadPropExpr, ctx: _ExecutionContext): any {
var result;
var receiver = ast.receiver.visitExpression(this, ctx);
if (isDynamicInstance(receiver)) {
var di = <DynamicInstance>receiver;
if (di.props.has(ast.name)) {
result = di.props.get(ast.name);
} else if (di.getters.has(ast.name)) {
result = di.getters.get(ast.name)();
} else if (di.methods.has(ast.name)) {
result = di.methods.get(ast.name);
} else {
result = reflector.getter(ast.name)(receiver);
}
} else {
result = reflector.getter(ast.name)(receiver);
}
return result;
}
visitReadKeyExpr(ast: o.ReadKeyExpr, ctx: _ExecutionContext): any {
var receiver = ast.receiver.visitExpression(this, ctx);
var prop = ast.index.visitExpression(this, ctx);
return receiver[prop];
}
visitLiteralArrayExpr(ast: o.LiteralArrayExpr, ctx: _ExecutionContext): any {
return this.visitAllExpressions(ast.entries, ctx);
}
visitLiteralMapExpr(ast: o.LiteralMapExpr, ctx: _ExecutionContext): any {
var result = {};
ast.entries.forEach((entry) => result[<string>entry[0]] =
(<o.Expression>entry[1]).visitExpression(this, ctx));
return result;
}
visitAllExpressions(expressions: o.Expression[], ctx: _ExecutionContext): any {
return expressions.map((expr) => expr.visitExpression(this, ctx));
}
visitAllStatements(statements: o.Statement[], ctx: _ExecutionContext): ReturnValue {
for (var i = 0; i < statements.length; i++) {
var stmt = statements[i];
var val = stmt.visitStatement(this, ctx);
if (val instanceof ReturnValue) {
return val;
}
}
return null;
}
}
function _declareFn(varNames: string[], statements: o.Statement[], ctx: _ExecutionContext,
visitor: StatementInterpreter): Function {
switch (varNames.length) {
case 0:
return () => _executeFunctionStatements(varNames, [], statements, ctx, visitor);
case 1:
return (d0) => _executeFunctionStatements(varNames, [d0], statements, ctx, visitor);
case 2:
return (d0, d1) => _executeFunctionStatements(varNames, [d0, d1], statements, ctx, visitor);
case 3:
return (d0, d1, d2) =>
_executeFunctionStatements(varNames, [d0, d1, d2], statements, ctx, visitor);
case 4:
return (d0, d1, d2, d3) =>
_executeFunctionStatements(varNames, [d0, d1, d2, d3], statements, ctx, visitor);
case 5:
return (d0, d1, d2, d3, d4) => _executeFunctionStatements(varNames, [d0, d1, d2, d3, d4],
statements, ctx, visitor);
case 6:
return (d0, d1, d2, d3, d4, d5) => _executeFunctionStatements(
varNames, [d0, d1, d2, d3, d4, d5], statements, ctx, visitor);
case 7:
return (d0, d1, d2, d3, d4, d5, d6) => _executeFunctionStatements(
varNames, [d0, d1, d2, d3, d4, d5, d6], statements, ctx, visitor);
case 8:
return (d0, d1, d2, d3, d4, d5, d6, d7) => _executeFunctionStatements(
varNames, [d0, d1, d2, d3, d4, d5, d6, d7], statements, ctx, visitor);
case 9:
return (d0, d1, d2, d3, d4, d5, d6, d7, d8) => _executeFunctionStatements(
varNames, [d0, d1, d2, d3, d4, d5, d6, d7, d8], statements, ctx, visitor);
case 10:
return (d0, d1, d2, d3, d4, d5, d6, d7, d8, d9) => _executeFunctionStatements(
varNames, [d0, d1, d2, d3, d4, d5, d6, d7, d8, d9], statements, ctx, visitor);
default:
throw new BaseException(
'Declaring functions with more than 10 arguments is not supported right now');
}
}
var CATCH_ERROR_VAR = 'error';
var CATCH_STACK_VAR = 'stack';

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import {
isPresent,
isBlank,
isString,
evalExpression,
RegExpWrapper,
StringWrapper
} from 'angular2/src/facade/lang';
import * as o from './output_ast';
import {EmitterVisitorContext} from './abstract_emitter';
import {AbstractJsEmitterVisitor} from './abstract_js_emitter';
import {sanitizeIdentifier} from '../util';
export function jitStatements(sourceUrl: string, statements: o.Statement[],
resultVar: string): any {
var converter = new JitEmitterVisitor();
var ctx = EmitterVisitorContext.createRoot([resultVar]);
converter.visitAllStatements(statements, ctx);
return evalExpression(sourceUrl, resultVar, ctx.toSource(), converter.getArgs());
}
class JitEmitterVisitor extends AbstractJsEmitterVisitor {
private _evalArgNames: string[] = [];
private _evalArgValues: any[] = [];
getArgs(): {[key: string]: any} {
var result = {};
for (var i = 0; i < this._evalArgNames.length; i++) {
result[this._evalArgNames[i]] = this._evalArgValues[i];
}
return result;
}
visitExternalExpr(ast: o.ExternalExpr, ctx: EmitterVisitorContext): any {
var value = ast.value.runtime;
var id = this._evalArgValues.indexOf(value);
if (id === -1) {
id = this._evalArgValues.length;
this._evalArgValues.push(value);
var name = isPresent(ast.value.name) ? sanitizeIdentifier(ast.value.name) : 'val';
this._evalArgNames.push(sanitizeIdentifier(`jit_${name}${id}`));
}
ctx.print(this._evalArgNames[id]);
return null;
}
}

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import {BaseException} from 'angular2/src/facade/exceptions';
import {isPresent, isBlank, RegExpWrapper, Math} from 'angular2/src/facade/lang';
// asset:<package-name>/<realm>/<path-to-module>
var _ASSET_URL_RE = /asset:([^\/]+)\/([^\/]+)\/(.+)/g;
var _PATH_SEP = '/';
var _PATH_SEP_RE = /\//g;
export enum ImportEnv {
Dart,
JS
}
/**
* Returns the module path to use for an import.
*/
export function getImportModulePath(moduleUrlStr: string, importedUrlStr: string,
importEnv: ImportEnv): string {
var absolutePathPrefix: string = importEnv === ImportEnv.Dart ? `package:` : '';
var moduleUrl = _AssetUrl.parse(moduleUrlStr, false);
var importedUrl = _AssetUrl.parse(importedUrlStr, true);
if (isBlank(importedUrl)) {
return importedUrlStr;
}
// Try to create a relative path first
if (moduleUrl.firstLevelDir == importedUrl.firstLevelDir &&
moduleUrl.packageName == importedUrl.packageName) {
return getRelativePath(moduleUrl.modulePath, importedUrl.modulePath, importEnv);
} else if (importedUrl.firstLevelDir == 'lib') {
return `${absolutePathPrefix}${importedUrl.packageName}/${importedUrl.modulePath}`;
}
throw new BaseException(`Can't import url ${importedUrlStr} from ${moduleUrlStr}`);
}
class _AssetUrl {
static parse(url: string, allowNonMatching: boolean): _AssetUrl {
var match = RegExpWrapper.firstMatch(_ASSET_URL_RE, url);
if (isPresent(match)) {
return new _AssetUrl(match[1], match[2], match[3]);
}
if (allowNonMatching) {
return null;
}
throw new BaseException(`Url ${url} is not a valid asset: url`);
}
constructor(public packageName: string, public firstLevelDir: string, public modulePath: string) {
}
}
export function getRelativePath(modulePath: string, importedPath: string,
importEnv: ImportEnv): string {
var moduleParts = modulePath.split(_PATH_SEP_RE);
var importedParts = importedPath.split(_PATH_SEP_RE);
var longestPrefix = getLongestPathSegmentPrefix(moduleParts, importedParts);
var resultParts = [];
var goParentCount = moduleParts.length - 1 - longestPrefix;
for (var i = 0; i < goParentCount; i++) {
resultParts.push('..');
}
if (goParentCount <= 0 && importEnv === ImportEnv.JS) {
resultParts.push('.');
}
for (var i = longestPrefix; i < importedParts.length; i++) {
resultParts.push(importedParts[i]);
}
return resultParts.join(_PATH_SEP);
}
export function getLongestPathSegmentPrefix(arr1: string[], arr2: string[]): number {
var prefixSize = 0;
var minLen = Math.min(arr1.length, arr2.length);
while (prefixSize < minLen && arr1[prefixSize] == arr2[prefixSize]) {
prefixSize++;
}
return prefixSize;
}

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import * as o from './output_ast';
import {
isPresent,
isBlank,
isString,
evalExpression,
RegExpWrapper,
StringWrapper,
isArray
} from 'angular2/src/facade/lang';
import {CompileIdentifierMetadata} from '../compile_metadata';
import {BaseException} from 'angular2/src/facade/exceptions';
import {
OutputEmitter,
EmitterVisitorContext,
AbstractEmitterVisitor,
CATCH_ERROR_VAR,
CATCH_STACK_VAR
} from './abstract_emitter';
import {getImportModulePath, ImportEnv} from './path_util';
var _debugModuleUrl = 'asset://debug/lib';
export function debugOutputAstAsTypeScript(ast: o.Statement | o.Expression | o.Type |
any[]): string {
var converter = new _TsEmitterVisitor(_debugModuleUrl);
var ctx = EmitterVisitorContext.createRoot([]);
var asts: any[];
if (isArray(ast)) {
asts = <any[]>ast;
} else {
asts = [ast];
}
asts.forEach((ast) => {
if (ast instanceof o.Statement) {
ast.visitStatement(converter, ctx);
} else if (ast instanceof o.Expression) {
ast.visitExpression(converter, ctx);
} else if (ast instanceof o.Type) {
ast.visitType(converter, ctx);
} else {
throw new BaseException(`Don't know how to print debug info for ${ast}`);
}
});
return ctx.toSource();
}
export class TypeScriptEmitter implements OutputEmitter {
constructor() {}
emitStatements(moduleUrl: string, stmts: o.Statement[], exportedVars: string[]): string {
var converter = new _TsEmitterVisitor(moduleUrl);
var ctx = EmitterVisitorContext.createRoot(exportedVars);
converter.visitAllStatements(stmts, ctx);
var srcParts = [];
converter.importsWithPrefixes.forEach((prefix, importedModuleUrl) => {
// Note: can't write the real word for import as it screws up system.js auto detection...
srcParts.push(
`imp` +
`ort * as ${prefix} from '${getImportModulePath(moduleUrl, importedModuleUrl, ImportEnv.JS)}';`);
});
srcParts.push(ctx.toSource());
return srcParts.join('\n');
}
}
class _TsEmitterVisitor extends AbstractEmitterVisitor implements o.TypeVisitor {
constructor(private _moduleUrl: string) { super(false); }
importsWithPrefixes = new Map<string, string>();
visitExternalExpr(ast: o.ExternalExpr, ctx: EmitterVisitorContext): any {
this._visitIdentifier(ast.value, ast.typeParams, ctx);
return null;
}
visitDeclareVarStmt(stmt: o.DeclareVarStmt, ctx: EmitterVisitorContext): any {
if (ctx.isExportedVar(stmt.name)) {
ctx.print(`export `);
}
if (stmt.hasModifier(o.StmtModifier.Final)) {
ctx.print(`const`);
} else {
ctx.print(`var`);
}
ctx.print(` ${stmt.name}`);
if (isPresent(stmt.type)) {
ctx.print(`:`);
stmt.type.visitType(this, ctx);
}
ctx.print(` = `);
stmt.value.visitExpression(this, ctx);
ctx.println(`;`);
return null;
}
visitCastExpr(ast: o.CastExpr, ctx: EmitterVisitorContext): any {
ctx.print(`(<`);
ast.type.visitType(this, ctx);
ctx.print(`>`);
ast.value.visitExpression(this, ctx);
ctx.print(`)`);
return null;
}
visitDeclareClassStmt(stmt: o.ClassStmt, ctx: EmitterVisitorContext): any {
ctx.pushClass(stmt);
if (ctx.isExportedVar(stmt.name)) {
ctx.print(`export `);
}
ctx.print(`class ${stmt.name}`);
if (isPresent(stmt.parent)) {
ctx.print(` extends `);
stmt.parent.visitExpression(this, ctx);
}
ctx.println(` {`);
ctx.incIndent();
stmt.fields.forEach((field) => this._visitClassField(field, ctx));
if (isPresent(stmt.constructorMethod)) {
this._visitClassConstructor(stmt, ctx);
}
stmt.getters.forEach((getter) => this._visitClassGetter(getter, ctx));
stmt.methods.forEach((method) => this._visitClassMethod(method, ctx));
ctx.decIndent();
ctx.println(`}`);
ctx.popClass();
return null;
}
private _visitClassField(field: o.ClassField, ctx: EmitterVisitorContext) {
if (field.hasModifier(o.StmtModifier.Private)) {
ctx.print(`private `);
}
ctx.print(field.name);
if (isPresent(field.type)) {
ctx.print(`:`);
field.type.visitType(this, ctx);
} else {
ctx.print(`: any`);
}
ctx.println(`;`);
}
private _visitClassGetter(getter: o.ClassGetter, ctx: EmitterVisitorContext) {
if (getter.hasModifier(o.StmtModifier.Private)) {
ctx.print(`private `);
}
ctx.print(`get ${getter.name}()`);
if (isPresent(getter.type)) {
ctx.print(`:`);
getter.type.visitType(this, ctx);
}
ctx.println(` {`);
ctx.incIndent();
this.visitAllStatements(getter.body, ctx);
ctx.decIndent();
ctx.println(`}`);
}
private _visitClassConstructor(stmt: o.ClassStmt, ctx: EmitterVisitorContext) {
ctx.print(`constructor(`);
this._visitParams(stmt.constructorMethod.params, ctx);
ctx.println(`) {`);
ctx.incIndent();
this.visitAllStatements(stmt.constructorMethod.body, ctx);
ctx.decIndent();
ctx.println(`}`);
}
private _visitClassMethod(method: o.ClassMethod, ctx: EmitterVisitorContext) {
if (method.hasModifier(o.StmtModifier.Private)) {
ctx.print(`private `);
}
ctx.print(`${method.name}(`);
this._visitParams(method.params, ctx);
ctx.print(`):`);
if (isPresent(method.type)) {
method.type.visitType(this, ctx);
} else {
ctx.print(`void`);
}
ctx.println(` {`);
ctx.incIndent();
this.visitAllStatements(method.body, ctx);
ctx.decIndent();
ctx.println(`}`);
}
visitFunctionExpr(ast: o.FunctionExpr, ctx: EmitterVisitorContext): any {
ctx.print(`(`);
this._visitParams(ast.params, ctx);
ctx.print(`):`);
if (isPresent(ast.type)) {
ast.type.visitType(this, ctx);
} else {
ctx.print(`void`);
}
ctx.println(` => {`);
ctx.incIndent();
this.visitAllStatements(ast.statements, ctx);
ctx.decIndent();
ctx.print(`}`);
return null;
}
visitDeclareFunctionStmt(stmt: o.DeclareFunctionStmt, ctx: EmitterVisitorContext): any {
if (ctx.isExportedVar(stmt.name)) {
ctx.print(`export `);
}
ctx.print(`function ${stmt.name}(`);
this._visitParams(stmt.params, ctx);
ctx.print(`):`);
if (isPresent(stmt.type)) {
stmt.type.visitType(this, ctx);
} else {
ctx.print(`void`);
}
ctx.println(` {`);
ctx.incIndent();
this.visitAllStatements(stmt.statements, ctx);
ctx.decIndent();
ctx.println(`}`);
return null;
}
visitTryCatchStmt(stmt: o.TryCatchStmt, ctx: EmitterVisitorContext): any {
ctx.println(`try {`);
ctx.incIndent();
this.visitAllStatements(stmt.bodyStmts, ctx);
ctx.decIndent();
ctx.println(`} catch (${CATCH_ERROR_VAR.name}) {`);
ctx.incIndent();
var catchStmts = [
<o.Statement>CATCH_STACK_VAR.set(CATCH_ERROR_VAR.prop('stack'))
.toDeclStmt(null, [o.StmtModifier.Final])
].concat(stmt.catchStmts);
this.visitAllStatements(catchStmts, ctx);
ctx.decIndent();
ctx.println(`}`);
return null;
}
visitBuiltintType(type: o.BuiltinType, ctx: EmitterVisitorContext): any {
var typeStr;
switch (type.name) {
case o.BuiltinTypeName.Bool:
typeStr = 'boolean';
break;
case o.BuiltinTypeName.Dynamic:
typeStr = 'any';
break;
case o.BuiltinTypeName.Function:
typeStr = 'Function';
break;
case o.BuiltinTypeName.Number:
typeStr = 'number';
break;
case o.BuiltinTypeName.Int:
typeStr = 'number';
break;
case o.BuiltinTypeName.String:
typeStr = 'string';
break;
default:
throw new BaseException(`Unsupported builtin type ${type.name}`);
}
ctx.print(typeStr);
return null;
}
visitExternalType(ast: o.ExternalType, ctx: EmitterVisitorContext): any {
this._visitIdentifier(ast.value, ast.typeParams, ctx);
return null;
}
visitArrayType(type: o.ArrayType, ctx: EmitterVisitorContext): any {
if (isPresent(type.of)) {
type.of.visitType(this, ctx);
} else {
ctx.print(`any`);
}
ctx.print(`[]`);
return null;
}
visitMapType(type: o.MapType, ctx: EmitterVisitorContext): any {
ctx.print(`{[key: string]:`);
if (isPresent(type.valueType)) {
type.valueType.visitType(this, ctx);
} else {
ctx.print(`any`);
}
ctx.print(`}`);
return null;
}
getBuiltinMethodName(method: o.BuiltinMethod): string {
var name;
switch (method) {
case o.BuiltinMethod.ConcatArray:
name = 'concat';
break;
case o.BuiltinMethod.SubscribeObservable:
name = 'subscribe';
break;
case o.BuiltinMethod.bind:
name = 'bind';
break;
default:
throw new BaseException(`Unknown builtin method: ${method}`);
}
return name;
}
private _visitParams(params: o.FnParam[], ctx: EmitterVisitorContext): void {
this.visitAllObjects((param) => {
ctx.print(param.name);
if (isPresent(param.type)) {
ctx.print(`:`);
param.type.visitType(this, ctx);
}
}, params, ctx, ',');
}
private _visitIdentifier(value: CompileIdentifierMetadata, typeParams: o.Type[],
ctx: EmitterVisitorContext): void {
if (isBlank(value.name)) {
throw new BaseException(`Internal error: unknown identifier ${value}`);
}
if (isPresent(value.moduleUrl) && value.moduleUrl != this._moduleUrl) {
var prefix = this.importsWithPrefixes.get(value.moduleUrl);
if (isBlank(prefix)) {
prefix = `import${this.importsWithPrefixes.size}`;
this.importsWithPrefixes.set(value.moduleUrl, prefix);
}
ctx.print(`${prefix}.`);
}
ctx.print(value.name);
if (isPresent(typeParams) && typeParams.length > 0) {
ctx.print(`<`);
this.visitAllObjects((type) => type.visitType(this, ctx), typeParams, ctx, ',');
ctx.print(`>`);
}
}
}