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support BigInt literals (#4583)

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This commit is contained in:
Alex Lam S.L
2021-01-24 01:51:18 +00:00
committed by GitHub
parent ef9f7ca3e7
commit 8bfd891c09
10 changed files with 251 additions and 176 deletions
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17
lib/ast.js
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@@ -249,7 +249,7 @@ var AST_BlockScope = DEFNODE("BlockScope", "enclosed functions make_def parent_s
enclosed: "[SymbolDef*/S] a list of all symbol definitions that are accessed from this scope or any subscopes",
functions: "[Object/S] like `variables`, but only lists function declarations",
parent_scope: "[AST_Scope?/S] link to the parent scope",
variables: "[Object/S] a map of name -> SymbolDef for all variables/functions defined in this scope",
variables: "[Object/S] a map of name ---> SymbolDef for all variables/functions defined in this scope",
},
clone: function(deep) {
var node = this._clone(deep);
@@ -472,7 +472,7 @@ var AST_Scope = DEFNODE("Scope", "uses_eval uses_with", {
var AST_Toplevel = DEFNODE("Toplevel", "globals", {
$documentation: "The toplevel scope",
$propdoc: {
globals: "[Object/S] a map of name -> SymbolDef for all undeclared names",
globals: "[Object/S] a map of name ---> SymbolDef for all undeclared names",
},
wrap: function(name) {
var body = this.body;
@@ -1440,6 +1440,19 @@ var AST_Number = DEFNODE("Number", "value", {
},
_validate: function() {
if (typeof this.value != "number") throw new Error("value must be number");
if (!isFinite(this.value)) throw new Error("value must be finite");
if (this.value < 0) throw new Error("value cannot be negative");
},
}, AST_Constant);
var AST_BigInt = DEFNODE("BigInt", "value", {
$documentation: "A BigInt literal",
$propdoc: {
value: "[string] the numeric representation",
},
_validate: function() {
if (typeof this.value != "string") throw new Error("value must be string");
if (this.value[0] == "-") throw new Error("value cannot be negative");
},
}, AST_Constant);