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allow let and const declarations in module bodies under labels

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This commit is contained in:
Mohamed Hegazy 2014-10-20 15:31:33 -07:00
parent 91f40988f1
commit d5fe43b53e
4 changed files with 29 additions and 22 deletions
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8
src/compiler/parser.ts
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@ -3916,14 +3916,14 @@ module ts {
}
function parseSourceElement() {
return parseSourceElementOrModuleElement(ModifierContext.SourceElements);
return parseSourceElementOrModuleElement(ModifierContext.SourceElements, /*allowLetAndConstDeclarations*/ false);
}
function parseModuleElement() {
return parseSourceElementOrModuleElement(ModifierContext.ModuleElements);
return parseSourceElementOrModuleElement(ModifierContext.ModuleElements, /*allowLetAndConstDeclarations*/ true);
}
function parseSourceElementOrModuleElement(modifierContext: ModifierContext): Statement {
function parseSourceElementOrModuleElement(modifierContext: ModifierContext, allowLetAndConstDeclarations: boolean): Statement {
if (isDeclaration()) {
return parseDeclaration(modifierContext);
}
@ -3931,7 +3931,7 @@ module ts {
var statementStart = scanner.getTokenPos();
var statementFirstTokenLength = scanner.getTextPos() - statementStart;
var errorCountBeforeStatement = file.syntacticErrors.length;
var statement = parseStatement(/*allowLetAndConstDeclarations*/ false);
var statement = parseStatement(allowLetAndConstDeclarations);
if (inAmbientContext && file.syntacticErrors.length === errorCountBeforeStatement) {
grammarErrorAtPos(statementStart, statementFirstTokenLength, Diagnostics.Statements_are_not_allowed_in_ambient_contexts);

2
tests/baselines/reference/letDeclarations-scopes.errors.txt
View file

@ -122,6 +122,8 @@ tests/cases/compiler/letDeclarations-scopes.ts(28,7): error TS2410: All symbols
let l = false;
var b2: boolean = l;
}
lable: let l2 = 0;
}
// methods

3
tests/baselines/reference/letDeclarations-scopes.js
View file

@ -117,6 +117,8 @@ module m {
let l = false;
var b2: boolean = l;
}
lable: let l2 = 0;
}
// methods
@ -251,6 +253,7 @@ var m;
let l = false;
var b2 = l;
}
lable: let l2 = 0;
})(m || (m = {}));
// methods
var C = (function () {

2
tests/cases/compiler/letDeclarations-scopes.ts
View file

@ -117,6 +117,8 @@ module m {
let l = false;
var b2: boolean = l;
}
lable: let l2 = 0;
}
// methods