JoBoEVD/UglifyJS
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

support template literals (#4601)

Browse Source
This commit is contained in:
Alex Lam S.L
2021-02-01 02:36:45 +00:00
committed by GitHub
parent ac7b5c07d7
commit d4685640a0
9 changed files with 278 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

28
lib/ast.js
View File

@@ -1418,6 +1418,34 @@ var AST_This = DEFNODE("This", null, {
},
}, AST_Symbol);
var AST_Template = DEFNODE("Template", "expressions strings tag", {
$documentation: "A template literal, i.e. tag`str1${expr1}...strN${exprN}strN+1`",
$propdoc: {
expressions: "[AST_Node*] the placeholder expressions",
strings: "[string*] the interpolating text segments",
tag: "[AST_Node] tag function, or null if absent",
},
walk: function(visitor) {
var node = this;
visitor.visit(node, function() {
if (node.tag) node.tag.walk(visitor);
node.expressions.forEach(function(expr) {
expr.walk(visitor);
});
});
},
_validate: function() {
if (this.expressions.length + 1 != this.strings.length) {
throw new Error("malformed template with " + this.expressions.length + " placeholder(s) but " + this.strings.length + " text segment(s)");
}
must_be_expressions(this, "expressions");
this.strings.forEach(function(string) {
if (typeof string != "string") throw new Error("strings must contain string");
});
if (this.tag != null) must_be_expression(this, "tag");
},
});
var AST_Constant = DEFNODE("Constant", null, {
$documentation: "Base class for all constants",
});