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Merge branch 'master' into fix-harmony

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This commit is contained in:
Anthony Van de Gejuchte
2016-06-20 19:21:25 +02:00
parent dda58244b6 85fbf86d7b
commit 2246c79318
19 changed files with 708 additions and 71 deletions
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33
README.md
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@@ -133,7 +133,16 @@ The available options are:
--reserved-file File containing reserved names
--reserve-domprops Make (most?) DOM properties reserved for
--mangle-props
--mangle-props Mangle property names
--mangle-props Mangle property names (default `0`). Set to
`true` or `1` to mangle all property names. Set
to `unquoted` or `2` to only mangle unquoted
property names. Mode `2` also enables the
`keep_quoted_props` beautifier option to
preserve the quotes around property names and
disables the `properties` compressor option to
prevent rewriting quoted properties with dot
notation. You can override these by setting
them explicitly on the command line.
--mangle-regex Only mangle property names matching the regex
--name-cache File to hold mangled names mappings
--pure-funcs List of functions that can be safely removed if
@@ -291,12 +300,19 @@ to set `true`; it's effectively a shortcut for `foo=true`).
- `unsafe` (default: false) -- apply "unsafe" transformations (discussion below)
- `unsafe_comps` (default: false) -- Reverse `<` and `<=` to `>` and `>=` to
allow improved compression. This might be unsafe when an at least one of two
operands is an object with computed values due the use of methods like `get`,
or `valueOf`. This could cause change in execution order after operands in the
comparison are switching. Compression only works if both `comparisons` and
`unsafe_comps` are both set to true.
- `conditionals` -- apply optimizations for `if`-s and conditional
expressions
- `comparisons` -- apply certain optimizations to binary nodes, for example:
`!(a <= b) → a > b` (only when `unsafe`), attempts to negate binary nodes,
e.g. `a = !b && !c && !d && !e → a=!(b||c||d||e)` etc.
`!(a <= b) → a > b` (only when `unsafe_comps`), attempts to negate binary
nodes, e.g. `a = !b && !c && !d && !e → a=!(b||c||d||e)` etc.
- `evaluate` -- attempt to evaluate constant expressions
@@ -445,7 +461,7 @@ can pass additional arguments that control the code output:
objects
- `space-colon` (default `true`) -- insert a space after the colon signs
- `ascii-only` (default `false`) -- escape Unicode characters in strings and
regexps
regexps (affects directives with non-ascii characters becoming invalid)
- `inline-script` (default `false`) -- escape the slash in occurrences of
`</script` in strings
- `width` (default 80) -- only takes effect when beautification is on, this
@@ -472,6 +488,8 @@ can pass additional arguments that control the code output:
- `1` -- always use single quotes
- `2` -- always use double quotes
- `3` -- always use the original quotes
- `keep_quoted_props` (default `false`) -- when turned on, prevents stripping
quotes from property names in object literals.
### Keeping copyright notices or other comments
@@ -658,9 +676,14 @@ Other options:
- `parse` (default {}) — pass an object if you wish to specify some
additional [parser options][parser]. (not all options available... see below)
##### mangle
- `except` - pass an array of identifiers that should be excluded from mangling
##### mangleProperties options
- `regex` — Pass a RegExp to only mangle certain names (maps to the `--mange-regex` CLI arguments option)
- `regex` — Pass a RegExp to only mangle certain names (maps to the `--mangle-regex` CLI arguments option)
- `ignore_quoted` – Only mangle unquoted property names (maps to the `--mangle-props 2` CLI arguments option)
We could add more options to `UglifyJS.minify` — if you need additional
functionality please suggest!

24
bin/uglifyjs
View File

@@ -69,7 +69,7 @@ You need to pass an argument to this option to specify the name that your module
.describe("quotes", "Quote style (0 - auto, 1 - single, 2 - double, 3 - original)")
.describe("reserved-file", "File containing reserved names")
.describe("reserve-domprops", "Make (most?) DOM properties reserved for --mangle-props")
.describe("mangle-props", "Mangle property names")
.describe("mangle-props", "Mangle property names (0 - disabled, 1 - mangle all properties, 2 - mangle unquoted properies)")
.describe("mangle-regex", "Only mangle property names matching the regex")
.describe("name-cache", "File to hold mangled names mappings")
.describe("pure-funcs", "List of functions that can be safely removed if their return value is not used")
@@ -125,7 +125,6 @@ You need to pass an argument to this option to specify the name that your module
.boolean("noerr")
.boolean("bare-returns")
.boolean("keep-fnames")
.boolean("mangle-props")
.boolean("reserve-domprops")
.wrap(80)
@@ -213,12 +212,24 @@ if (ARGS.quotes === true) {
ARGS.quotes = 3;
}
if (ARGS.mangle_props === true) {
ARGS.mangle_props = 1;
} else if (ARGS.mangle_props === "unquoted") {
ARGS.mangle_props = 2;
}
var OUTPUT_OPTIONS = {
beautify : BEAUTIFY ? true : false,
preamble : ARGS.preamble || null,
quote_style : ARGS.quotes != null ? ARGS.quotes : 0
};
if (ARGS.mangle_props == 2) {
OUTPUT_OPTIONS.keep_quoted_props = true;
if (COMPRESS && !("properties" in COMPRESS))
COMPRESS.properties = false;
}
if (ARGS.screw_ie8) {
if (COMPRESS) COMPRESS.screw_ie8 = true;
if (MANGLE) MANGLE.screw_ie8 = true;
@@ -401,10 +412,11 @@ async.eachLimit(files, 1, function (file, cb) {
}
TOPLEVEL = UglifyJS.mangle_properties(TOPLEVEL, {
reserved : reserved,
cache : cache,
only_cache : !ARGS.mangle_props,
regex : regex
reserved : reserved,
cache : cache,
only_cache : !ARGS.mangle_props,
regex : regex,
ignore_quoted : ARGS.mangle_props == 2
});
writeNameCache("props", cache);
})();

10
lib/compress.js
View File

@@ -1102,8 +1102,6 @@ merge(Compressor.prototype, {
case "<=" : return ev(left, c) <= ev(right, c);
case ">" : return ev(left, c) > ev(right, c);
case ">=" : return ev(left, c) >= ev(right, c);
case "in" : return ev(left, c) in ev(right, c);
case "instanceof" : return ev(left, c) instanceof ev(right, c);
}
throw def;
});
@@ -2580,9 +2578,11 @@ merge(Compressor.prototype, {
});
self = best_of(self, negated);
}
switch (self.operator) {
case "<": reverse(">"); break;
case "<=": reverse(">="); break;
if (compressor.option("unsafe_comps")) {
switch (self.operator) {
case "<": reverse(">"); break;
case "<=": reverse(">="); break;
}
}
}
if (self.operator == "+" && self.right instanceof AST_String

61
lib/output.js
View File

@@ -43,6 +43,8 @@
"use strict";
var EXPECT_DIRECTIVE = /^$|[;{][\s\n]*$/;
function OutputStream(options) {
options = defaults(options, {
@@ -64,7 +66,8 @@ function OutputStream(options) {
preserve_line : false,
screw_ie8 : false,
preamble : null,
quote_style : 0
quote_style : 0,
keep_quoted_props: false
}, true);
var indentation = 0;
@@ -359,7 +362,18 @@ function OutputStream(options) {
force_semicolon : force_semicolon,
to_ascii : to_ascii,
print_name : function(name) { print(make_name(name)) },
print_string : function(str, quote) { print(encode_string(str, quote)) },
print_string : function(str, quote, escape_directive) {
var encoded = encode_string(str, quote);
if (escape_directive === true && encoded.indexOf("\\") === -1) {
// Insert semicolons to break directive prologue
if (!EXPECT_DIRECTIVE.test(OUTPUT)) {
force_semicolon();
}
force_semicolon();
}
print(encoded);
},
encode_string : encode_string,
next_indent : next_indent,
with_indent : with_indent,
with_block : with_block,
@@ -391,10 +405,11 @@ function OutputStream(options) {
};
var use_asm = false;
var in_directive = false;
AST_Node.DEFMETHOD("print", function(stream, force_parens){
var self = this, generator = self._codegen, prev_use_asm = use_asm;
if (self instanceof AST_Directive && self.value == "use asm") {
if (self instanceof AST_Directive && self.value == "use asm" && stream.parent() instanceof AST_Scope) {
use_asm = true;
}
function doit() {
@@ -409,7 +424,7 @@ function OutputStream(options) {
doit();
}
stream.pop_node();
if (self instanceof AST_Lambda) {
if (self instanceof AST_Scope) {
use_asm = prev_use_asm;
}
});
@@ -683,9 +698,16 @@ function OutputStream(options) {
/* -----[ statements ]----- */
function display_body(body, is_toplevel, output) {
function display_body(body, is_toplevel, output, allow_directives) {
var last = body.length - 1;
in_directive = allow_directives;
body.forEach(function(stmt, i){
if (in_directive === true && !(stmt instanceof AST_Directive ||
stmt instanceof AST_EmptyStatement ||
(stmt instanceof AST_SimpleStatement && stmt.body instanceof AST_String)
)) {
in_directive = false;
}
if (!(stmt instanceof AST_EmptyStatement)) {
output.indent();
stmt.print(output);
@@ -694,7 +716,14 @@ function OutputStream(options) {
if (is_toplevel) output.newline();
}
}
if (in_directive === true &&
stmt instanceof AST_SimpleStatement &&
stmt.body instanceof AST_String
) {
in_directive = false;
}
});
in_directive = false;
};
AST_StatementWithBody.DEFMETHOD("_do_print_body", function(output){
@@ -706,7 +735,7 @@ function OutputStream(options) {
output.semicolon();
});
DEFPRINT(AST_Toplevel, function(self, output){
display_body(self.body, true, output);
display_body(self.body, true, output, true);
output.print("");
});
DEFPRINT(AST_LabeledStatement, function(self, output){
@@ -718,9 +747,9 @@ function OutputStream(options) {
self.body.print(output);
output.semicolon();
});
function print_bracketed(body, output) {
function print_bracketed(body, output, allow_directives) {
if (body.length > 0) output.with_block(function(){
display_body(body, false, output);
display_body(body, false, output, allow_directives);
});
else output.print("{}");
};
@@ -829,7 +858,7 @@ function OutputStream(options) {
});
});
output.space();
print_bracketed(self.body, output);
print_bracketed(self.body, output, true);
});
DEFPRINT(AST_Lambda, function(self, output){
self._do_print(output);
@@ -1363,7 +1392,11 @@ function OutputStream(options) {
&& parseFloat(key) >= 0) {
output.print(make_num(key));
} else if (RESERVED_WORDS(key) ? output.option("screw_ie8") : is_identifier_string(key)) {
output.print_name(key);
if (quote && output.option("keep_quoted_props")) {
output.print_string(key, quote);
} else {
output.print_name(key);
}
} else {
output.print_string(key, quote);
}
@@ -1433,10 +1466,10 @@ function OutputStream(options) {
output.print(self.getValue());
});
DEFPRINT(AST_String, function(self, output){
output.print_string(self.getValue(), self.quote);
output.print_string(self.getValue(), self.quote, in_directive);
});
DEFPRINT(AST_Number, function(self, output){
if (use_asm && self.start.raw != null) {
if (use_asm && self.start && self.start.raw != null) {
output.print(self.start.raw);
} else {
output.print(make_num(self.getValue()));
@@ -1535,7 +1568,9 @@ function OutputStream(options) {
// self should be AST_New. decide if we want to show parens or not.
function need_constructor_parens(self, output) {
// Always print parentheses with arguments
return self.args.length > 0;
if (self.args.length > 0) return true;
return output.option("beautify");
};
function best_of(a) {

37
lib/parse.js
View File

@@ -852,9 +852,10 @@ function parse($TEXT, options) {
handle_regexp();
switch (S.token.type) {
case "string":
if (S.in_directives) {
if (is_token(peek(), "punc", ";") || peek().nlb) {
S.input.add_directive(S.token.raw.substr(1, S.token.raw.length - 2));
var dir = false;
if (S.in_directives === true) {
if ((is_token(peek(), "punc", ";") || peek().nlb) && S.token.raw.indexOf("\\") === -1) {
S.input.add_directive(S.token.value);
} else {
S.in_directives = false;
}
@@ -893,6 +894,7 @@ function parse($TEXT, options) {
case "`":
return simple_statement();
case ";":
S.in_directives = false;
next();
return new AST_EmptyStatement();
default:
@@ -937,7 +939,7 @@ function parse($TEXT, options) {
case "return":
if (S.in_function == 0 && !options.bare_returns)
croak("'return' outside of function");
croak("SyntaxError: 'return' outside of function");
return new AST_Return({
value: ( is("punc", ";")
? (next(), null)
@@ -954,7 +956,7 @@ function parse($TEXT, options) {
case "throw":
if (S.token.nlb)
croak("Illegal newline after 'throw'");
croak("SyntaxError: Illegal newline after 'throw'");
return new AST_Throw({
value: (tmp = expression(true), semicolon(), tmp)
});
@@ -972,6 +974,9 @@ function parse($TEXT, options) {
return tmp = const_(), semicolon(), tmp;
case "with":
if (S.input.has_directive("use strict")) {
croak("SyntaxError: Strict mode may not include a with statement");
}
return new AST_With({
expression : parenthesised(),
body : statement()
@@ -1000,7 +1005,7 @@ function parse($TEXT, options) {
// syntactically incorrect if it contains a
// LabelledStatement that is enclosed by a
// LabelledStatement with the same Identifier as label.
croak("Label " + label.name + " defined twice");
croak("SyntaxError: Label " + label.name + " defined twice");
}
expect(":");
S.labels.push(label);
@@ -1013,7 +1018,7 @@ function parse($TEXT, options) {
label.references.forEach(function(ref){
if (ref instanceof AST_Continue) {
ref = ref.label.start;
croak("Continue label `" + label.name + "` refers to non-IterationStatement.",
croak("SyntaxError: Continue label `" + label.name + "` refers to non-IterationStatement.",
ref.line, ref.col, ref.pos);
}
});
@@ -1033,11 +1038,11 @@ function parse($TEXT, options) {
if (label != null) {
ldef = find_if(function(l){ return l.name == label.name }, S.labels);
if (!ldef)
croak("Undefined label " + label.name);
croak("SyntaxError: Undefined label " + label.name);
label.thedef = ldef;
}
else if (S.in_loop == 0)
croak(type.TYPE + " not inside a loop or switch");
croak("SyntaxError: " + type.TYPE + " not inside a loop or switch");
semicolon();
var stat = new type({ label: label });
if (ldef) ldef.references.push(stat);
@@ -1058,7 +1063,7 @@ function parse($TEXT, options) {
if (is_in || is_of) {
if ((init instanceof AST_Definitions) &&
init.definitions.length > 1)
croak("Only one variable declaration allowed in for..in loop");
croak("SyntaxError: Only one variable declaration allowed in for..in loop");
next();
if (is_in) {
return for_in(init);
@@ -1330,7 +1335,7 @@ function parse($TEXT, options) {
});
}
if (!bcatch && !bfinally)
croak("Missing catch/finally blocks");
croak("SyntaxError: Missing catch/finally blocks");
return new AST_Try({
body : body,
bcatch : bcatch,
@@ -1497,8 +1502,8 @@ function parse($TEXT, options) {
break;
case "operator":
if (!is_identifier_string(tok.value)) {
throw new JS_Parse_Error("Invalid getter/setter name: " + tok.value,
tok.file, tok.line, tok.col, tok.pos);
croak("SyntaxError: Invalid getter/setter name: " + tok.value,
tok.line, tok.col, tok.pos);
}
ret = _make_symbol(AST_SymbolRef);
break;
@@ -1917,7 +1922,7 @@ function parse($TEXT, options) {
function as_symbol(type, noerror) {
if (!is("name")) {
if (!noerror) croak("Name expected");
if (!noerror) croak("SyntaxError: Name expected");
return null;
}
if (is("name", "yield") && S.input.has_directive("use strict")) {
@@ -2003,7 +2008,7 @@ function parse($TEXT, options) {
function make_unary(ctor, op, expr) {
if ((op == "++" || op == "--") && !is_assignable(expr))
croak("Invalid use of " + op + " operator");
croak("SyntaxError: Invalid use of " + op + " operator");
return new ctor({ operator: op, expression: expr });
};
@@ -2087,7 +2092,7 @@ function parse($TEXT, options) {
end : prev()
});
}
croak("Invalid assignment");
croak("SyntaxError: Invalid assignment");
}
if (is("arrow")) {
left = new AST_SymbolFunarg({

16
lib/propmangle.js
View File

@@ -71,7 +71,8 @@ function mangle_properties(ast, options) {
reserved : null,
cache : null,
only_cache : false,
regex : null
regex : null,
ignore_quoted : false
});
var reserved = options.reserved;
@@ -87,6 +88,7 @@ function mangle_properties(ast, options) {
}
var regex = options.regex;
var ignore_quoted = options.ignore_quoted;
var names_to_mangle = [];
var unmangleable = [];
@@ -94,7 +96,8 @@ function mangle_properties(ast, options) {
// step 1: find candidates to mangle
ast.walk(new TreeWalker(function(node){
if (node instanceof AST_ObjectKeyVal) {
add(node.key);
if (!(ignore_quoted && node.quote))
add(node.key);
}
else if (node instanceof AST_ObjectProperty) {
// setter or getter, since KeyVal is handled above
@@ -107,7 +110,8 @@ function mangle_properties(ast, options) {
}
else if (node instanceof AST_Sub) {
if (this.parent() instanceof AST_Assign) {
addStrings(node.property);
if (!ignore_quoted)
addStrings(node.property);
}
}
else if (node instanceof AST_ConciseMethod) {
@@ -118,7 +122,8 @@ function mangle_properties(ast, options) {
// step 2: transform the tree, renaming properties
return ast.transform(new TreeTransformer(function(node){
if (node instanceof AST_ObjectKeyVal) {
node.key = mangle(node.key);
if (!(ignore_quoted && node.quote))
node.key = mangle(node.key);
}
else if (node instanceof AST_ObjectProperty) {
// setter or getter
@@ -128,7 +133,8 @@ function mangle_properties(ast, options) {
node.property = mangle(node.property);
}
else if (node instanceof AST_Sub) {
node.property = mangleStrings(node.property);
if (!ignore_quoted)
node.property = mangleStrings(node.property);
}
else if (node instanceof AST_ConciseMethod) {
if (should_mangle(node.name.name)) {

2
package.json
View File

@@ -4,7 +4,7 @@
"homepage": "http://lisperator.net/uglifyjs",
"author": "Mihai Bazon <mihai.bazon@gmail.com> (http://lisperator.net/)",
"license": "BSD-2-Clause",
"version": "2.6.2",
"version": "2.6.3",
"engines": {
"node": ">=0.8.0"
},

2
test/compress/asm.js
View File

@@ -92,7 +92,7 @@ asm_mixed: {
function logSum(start, end) {
start = 0 | start, end = 0 | end;
var sum = 0, p = 0, q = 0;
for (p = start << 3, q = end << 3; (0 | q) > (0 | p); p = p + 8 | 0) sum += +log(values[p >> 3]);
for (p = start << 3, q = end << 3; (0 | p) < (0 | q); p = p + 8 | 0) sum += +log(values[p >> 3]);
return +sum;
}
function geometricMean(start, end) {

76
test/compress/comparing.js Normal file
View File

@@ -0,0 +1,76 @@
keep_comparisons: {
options = {
comparisons: true,
unsafe_comps: false
}
input: {
var obj1 = {
valueOf: function() {triggeredFirst();}
}
var obj2 = {
valueOf: function() {triggeredSecond();}
}
var result1 = obj1 <= obj2;
var result2 = obj1 < obj2;
var result3 = obj1 >= obj2;
var result4 = obj1 > obj2;
}
expect: {
var obj1 = {
valueOf: function() {triggeredFirst();}
}
var obj2 = {
valueOf: function() {triggeredSecond();}
}
var result1 = obj1 <= obj2;
var result2 = obj1 < obj2;
var result3 = obj1 >= obj2;
var result4 = obj1 > obj2;
}
}
keep_comparisons_with_unsafe_comps: {
options = {
comparisons: true,
unsafe_comps: true
}
input: {
var obj1 = {
valueOf: function() {triggeredFirst();}
}
var obj2 = {
valueOf: function() {triggeredSecond();}
}
var result1 = obj1 <= obj2;
var result2 = obj1 < obj2;
var result3 = obj1 >= obj2;
var result4 = obj1 > obj2;
}
expect: {
var obj1 = {
valueOf: function() {triggeredFirst();}
}
var obj2 = {
valueOf: function() {triggeredSecond();}
}
var result1 = obj2 >= obj1;
var result2 = obj2 > obj1;
var result3 = obj1 >= obj2;
var result4 = obj1 > obj2;
}
}
dont_change_in_or_instanceof_expressions: {
input: {
1 in 1;
null in null;
1 instanceof 1;
null instanceof null;
}
expect: {
1 in 1;
null in null;
1 instanceof 1;
null instanceof null;
}
}

51
test/compress/properties.js
View File

@@ -72,3 +72,54 @@ evaluate_length: {
a = ("foo" + b).length;
}
}
mangle_properties: {
mangle_props = {
ignore_quoted: false
};
input: {
a["foo"] = "bar";
a.color = "red";
x = {"bar": 10};
}
expect: {
a["a"] = "bar";
a.b = "red";
x = {c: 10};
}
}
mangle_unquoted_properties: {
mangle_props = {
ignore_quoted: true
}
beautify = {
beautify: false,
quote_style: 3,
keep_quoted_props: true,
}
input: {
function f1() {
a["foo"] = "bar";
a.color = "red";
x = {"bar": 10};
}
function f2() {
a.foo = "bar";
a['color'] = "red";
x = {bar: 10};
}
}
expect: {
function f1() {
a["foo"] = "bar";
a.a = "red";
x = {"bar": 10};
}
function f2() {
a.b = "bar";
a['color'] = "red";
x = {c: 10};
}
}
}

309
test/mocha/directives.js
View File

@@ -58,4 +58,313 @@ describe("Directives", function() {
assert.strictEqual(tokenizer.has_directive("use asm"), false);
assert.strictEqual(tokenizer.has_directive("use thing"), false);
});
it("Should know which strings are directive and which ones are not", function() {
var test_directive = function(tokenizer, test) {
test.directives.map(function(directive) {
assert.strictEqual(tokenizer.has_directive(directive), true, directive + " in " + test.input);
});
test.non_directives.map(function(fake_directive) {
assert.strictEqual(tokenizer.has_directive(fake_directive), false, fake_directive + " in " + test.input);
});
}
var tests = [
{
input: '"use strict"\n',
directives: ["use strict"],
non_directives: ["use asm"]
},
{
input: '"use\\\nstrict";',
directives: [],
non_directives: ["use strict", "use\nstrict", "use \nstrict", "use asm"]
},
{
input: '"use strict"\n"use asm"\n"use bar"\n',
directives: ["use strict", "use asm", "use bar"],
non_directives: ["use foo", "use\\x20strict"]
},
{
input: '"use \\\nstrict";"use strict";',
directives: [],
non_directives: ["use strict", "use\nstrict", "use \nstrict", "use asm"]
},
{
input: '"\\76";',
directives: [],
non_directives: [">", "\\76"]
},
{
input: '"use strict"', // no ; or newline
directives: [],
non_directives: ["use strict", "use\nstrict", "use \nstrict", "use asm"]
},
{
input: ';"use strict"',
directives: [],
non_directives: ["use strict", "use\nstrict", "use \nstrict", "use asm"]
},
// Duplicate above code but put it in a function
{
input: 'function foo() {"use strict"\n',
directives: ["use strict"],
non_directives: ["use asm"]
},
{
input: 'function foo() {"use\\\nstrict";',
directives: [],
non_directives: ["use strict", "use\nstrict", "use \nstrict", "use asm"]
},
{
input: 'function foo() {"use strict"\n"use asm"\n"use bar"\n',
directives: ["use strict", "use asm", "use bar"],
non_directives: ["use foo", "use\\x20strict"]
},
{
input: 'function foo() {"use \\\nstrict";"use strict";',
directives: [],
non_directives: ["use strict", "use\nstrict", "use \nstrict", "use asm"]
},
{
input: 'var foo = function() {"\\76";',
directives: [],
non_directives: [">", "\\76"]
},
{
input: 'var foo = function() {"use strict"', // no ; or newline
directives: [],
non_directives: ["use strict", "use\nstrict", "use \nstrict", "use asm"]
},
{
input: 'var foo = function() {;"use strict"',
directives: [],
non_directives: ["use strict", "use\nstrict", "use \nstrict", "use asm"]
},
// Special cases
{
input: '"1";"2";"3";"4";;"5"',
directives: ["1", "2", "3", "4"],
non_directives: ["5", "6", "use strict", "use asm"]
},
{
input: 'if(1){"use strict";',
directives: [],
non_directives: ["use strict", "use\nstrict", "use \nstrict", "use asm"]
},
{
input: '"use strict";try{"use asm";',
directives: ["use strict"],
non_directives: ["use\nstrict", "use \nstrict", "use asm"]
}
];
for (var i = 0; i < tests.length; i++) {
// Fail parser deliberately to get state at failure
var tokenizer = uglify.tokenizer(tests[i].input + "]", "foo.js");
try {
var parser = uglify.parse(tokenizer);
throw new Error("Expected parser to fail");
} catch (e) {
assert.strictEqual(e instanceof uglify.JS_Parse_Error, true);
assert.strictEqual(e.message, "SyntaxError: Unexpected token: punc (])");
}
test_directive(tokenizer, tests[i]);
}
});
it("Should test EXPECT_DIRECTIVE RegExp", function() {
var tests = [
["", true],
["'test';", true],
["'test';;", true],
["'tests';\n", true],
["'tests'", false],
["'tests'; \n\t", true],
["'tests';\n\n", true],
["\n\n\"use strict\";\n\n", true]
];
for (var i = 0; i < tests.length; i++) {
assert.strictEqual(uglify.EXPECT_DIRECTIVE.test(tests[i][0]), tests[i][1], tests[i][0]);
}
});
it("Should only print 2 semicolons spread over 2 lines in beautify mode", function() {
assert.strictEqual(
uglify.minify(
'"use strict";\'use strict\';"use strict";"use strict";;\'use strict\';console.log(\'use strict\');',
{fromString: true, output: {beautify: true, quote_style: 3}, compress: false}
).code,
'"use strict";\n\n\'use strict\';\n\n"use strict";\n\n"use strict";\n\n;\'use strict\';\n\nconsole.log(\'use strict\');'
);
});
it("Should not add double semicolons in non-scoped block statements to avoid strings becoming directives", function() {
var tests = [
[
'{"use\x20strict"}',
'{"use strict"}'
],
[
'function foo(){"use\x20strict";}', // Valid place for directives
'function foo(){"use strict"}'
],
[
'try{"use\x20strict"}catch(e){}finally{"use\x20strict"}',
'try{"use strict"}catch(e){}finally{"use strict"}'
],
[
'if(1){"use\x20strict"} else {"use strict"}',
'if(1){"use strict"}else{"use strict"}'
]
];
for (var i = 0; i < tests.length; i++) {
assert.strictEqual(
uglify.minify(tests[i][0], {fromString: true, quote_style: 3, compress: false, mangle: false}).code,
tests[i][1],
tests[i][0]
);
}
});
it("Should add double semicolon when relying on automatic semicolon insertion", function() {
var code = uglify.minify('"use strict";"use\\x20strict";',
{fromString: true, output: {semicolons: false}, compress: false}
).code;
assert.strictEqual(code, '"use strict";;"use strict"\n');
});
it("Should check quote style of directives", function() {
var tests = [
// 0. Prefer double quotes, unless string contains more double quotes than single quotes
[
'"testing something";',
0,
'"testing something";'
],
[
"'use strict';",
0,
'"use strict";'
],
[
'"\\\'use strict\\\'";', // Not a directive as it contains quotes
0,
';"\'use strict\'";',
],
[
"'\"use strict\"';",
0,
"'\"use strict\"';",
],
// 1. Always use single quote
[
'"testing something";',
1,
"'testing something';"
],
[
"'use strict';",
1,
"'use strict';"
],
[
'"\'use strict\'";',
1,
// Intentionally causes directive breakage at cost of less logic, usage should be rare anyway
"'\\'use strict\\'';",
],
[
"'\\'use strict\\'';", // Not a valid directive
1,
"'\\'use strict\\'';" // But no ; necessary as directive stays invalid
],
[
"'\"use strict\"';",
1,
"'\"use strict\"';",
],
// 2. Always use double quote
[
'"testing something";',
2,
'"testing something";'
],
[
"'use strict';",
2,
'"use strict";'
],
[
'"\'use strict\'";',
2,
"\"'use strict'\";",
],
[
"'\"use strict\"';",
2,
// Intentionally causes directive breakage at cost of less logic, usage should be rare anyway
'"\\\"use strict\\\"";',
],
[
'"\\"use strict\\"";', // Not a valid directive
2,
'"\\"use strict\\"";' // But no ; necessary as directive stays invalid
],
// 3. Always use original
[
'"testing something";',
3,
'"testing something";'
],
[
"'use strict';",
3,
"'use strict';",
],
[
'"\'use strict\'";',
3,
'"\'use strict\'";',
],
[
"'\"use strict\"';",
3,
"'\"use strict\"';",
],
];
for (var i = 0; i < tests.length; i++) {
assert.strictEqual(
uglify.minify(tests[i][0], {fromString: true, output:{quote_style: tests[i][1]}, compress: false}).code,
tests[i][2],
tests[i][0] + " using mode " + tests[i][1]
);
}
});
it("Should be able to compress without side effects", function() {
// NOTE: the "use asm" directive disables any optimisation after being defined
var tests = [
[
'"use strict";"use strict";"use strict";"use foo";"use strict";;"use sloppy";doSomething("foo");',
'"use strict";"use foo";doSomething("foo");'
],
[
// Nothing gets optimised in the compressor because "use asm" is the first statement
'"use asm";"use\\x20strict";1+1;',
'"use asm";;"use strict";1+1;' // Yet, the parser noticed that "use strict" wasn't a directive
]
];
for (var i = 0; i < tests.length; i++) {
assert.strictEqual(
uglify.minify(tests[i][0], {fromString: true, compress: {collapse_vars: true, side_effects: true}}).code,
tests[i][1],
tests[i][0]
);
}
});
});

2
test/mocha/getter-setter.js
View File

@@ -71,7 +71,7 @@ describe("Getters and setters", function() {
var fail = function(data) {
return function (e) {
return e instanceof UglifyJS.JS_Parse_Error &&
e.message === "Invalid getter/setter name: " + data.operator;
e.message === "SyntaxError: Invalid getter/setter name: " + data.operator;
};
};

53
test/mocha/minify.js
View File

@@ -7,5 +7,56 @@ describe("minify", function() {
var result = Uglify.minify(js, {fromString: true});
assert.strictEqual(result.code, 'function foo(n){return n?3:7}');
});
});
describe("keep_quoted_props", function() {
it("Should preserve quotes in object literals", function() {
var js = 'var foo = {"x": 1, y: 2, \'z\': 3};';
var result = Uglify.minify(js, {
fromString: true, output: {
keep_quoted_props: true
}});
assert.strictEqual(result.code, 'var foo={"x":1,y:2,"z":3};');
});
it("Should preserve quote styles when quote_style is 3", function() {
var js = 'var foo = {"x": 1, y: 2, \'z\': 3};';
var result = Uglify.minify(js, {
fromString: true, output: {
keep_quoted_props: true,
quote_style: 3
}});
assert.strictEqual(result.code, 'var foo={"x":1,y:2,\'z\':3};');
});
it("Should not preserve quotes in object literals when disabled", function() {
var js = 'var foo = {"x": 1, y: 2, \'z\': 3};';
var result = Uglify.minify(js, {
fromString: true, output: {
keep_quoted_props: false,
quote_style: 3
}});
assert.strictEqual(result.code, 'var foo={x:1,y:2,z:3};');
});
});
describe("mangleProperties", function() {
it("Shouldn't mangle quoted properties", function() {
var js = 'a["foo"] = "bar"; a.color = "red"; x = {"bar": 10};';
var result = Uglify.minify(js, {
fromString: true,
compress: {
properties: false
},
mangleProperties: {
ignore_quoted: true
},
output: {
keep_quoted_props: true,
quote_style: 3
}
});
assert.strictEqual(result.code,
'a["foo"]="bar",a.a="red",x={"bar":10};');
});
});
});

62
test/mocha/new.js
View File

@@ -2,7 +2,49 @@ var assert = require("assert");
var uglify = require("../../");
describe("New", function() {
it("Should attach callback parens after some tokens", function() {
it("Should add trailing parentheses for new expressions with zero arguments in beautify mode", function() {
var tests = [
"new x(1);",
"new x;",
"new new x;",
"new (function(foo){this.foo=foo;})(1);",
"new (function(foo){this.foo=foo;})();",
"new (function test(foo){this.foo=foo;})(1);",
"new (function test(foo){this.foo=foo;})();",
"new true;",
"new (0);",
"new (!0);",
"new (bar = function(foo) {this.foo=foo;})(123);",
"new (bar = function(foo) {this.foo=foo;})();"
];
var expected = [
"new x(1);",
"new x();",
"new new x()();",
"new function(foo) {\n this.foo = foo;\n}(1);",
"new function(foo) {\n this.foo = foo;\n}();",
"new function test(foo) {\n this.foo = foo;\n}(1);",
"new function test(foo) {\n this.foo = foo;\n}();",
"new true();",
"new 0();",
"new (!0)();",
"new (bar = function(foo) {\n this.foo = foo;\n})(123);",
"new (bar = function(foo) {\n this.foo = foo;\n})();"
];
for (var i = 0; i < tests.length; i++) {
assert.strictEqual(
uglify.minify(tests[i], {
fromString: true,
output: {beautify: true},
compress: false,
mangle: false
}).code,
expected[i]
);
}
});
it("Should not add trailing parentheses for new expressions with zero arguments in non-beautify mode", function() {
var tests = [
"new x(1);",
"new x;",
@@ -20,22 +62,22 @@ describe("New", function() {
var expected = [
"new x(1);",
"new x;",
"new (new x);",
"new function(foo) {\n this.foo = foo;\n}(1);",
"new function(foo) {\n this.foo = foo;\n};",
"new function test(foo) {\n this.foo = foo;\n}(1);",
"new function test(foo) {\n this.foo = foo;\n};",
"new(new x);",
"new function(foo){this.foo=foo}(1);",
"new function(foo){this.foo=foo};",
"new function test(foo){this.foo=foo}(1);",
"new function test(foo){this.foo=foo};",
"new true;",
"new 0;",
"new (!0);",
"new (bar = function(foo) {\n this.foo = foo;\n})(123);",
"new (bar = function(foo) {\n this.foo = foo;\n});"
"new(!0);",
"new(bar=function(foo){this.foo=foo})(123);",
"new(bar=function(foo){this.foo=foo});"
];
for (var i = 0; i < tests.length; i++) {
assert.strictEqual(
uglify.minify(tests[i], {
fromString: true,
output: {beautify: true},
output: {beautify: false},
compress: false,
mangle: false
}).code,

4
test/mocha/string-literal.js
View File

@@ -59,13 +59,13 @@ describe("String literals", function() {
it("Should not throw error outside strict mode if string contains escaped octalIntegerLiteral", function() {
var tests = [
['"\\76";', '">";'],
['"\\76";', ';">";'],
['"\\0"', '"\\0";'],
['"\\08"', '"\\08";'],
['"\\008"', '"\\08";'],
['"\\0008"', '"\\08";'],
['"use strict" === "use strict";\n"\\76";', '"use strict"==="use strict";">";'],
// ['"use\\\n strict";\n"\\07";', '"use\\\n strict";\n"\\u0007";'] // TODO No way to store this content literally yet as directive
['"use\\\n strict";\n"\\07";', ';"use strict";"\07";']
];
for (var test in tests) {

16
test/mocha/with.js Normal file
View File

@@ -0,0 +1,16 @@
var assert = require("assert");
var uglify = require("../../");
describe("With", function() {
it ("Should throw syntaxError when using with statement in strict mode", function() {
var code = '"use strict";\nthrow NotEarlyError;\nwith ({}) { }';
var test = function() {
uglify.parse(code);
}
var error = function(e) {
return e instanceof uglify.JS_Parse_Error &&
e.message === "SyntaxError: Strict mode may not include a with statement";
}
assert.throws(test, error);
});
});

8
test/run-tests.js
View File

@@ -1,5 +1,7 @@
#! /usr/bin/env node
global.UGLIFY_DEBUG = true;
var U = require("../tools/node");
var path = require("path");
var fs = require("fs");
@@ -110,7 +112,11 @@ function run_compress_tests() {
expect = test.expect_exact;
}
var input = as_toplevel(test.input);
var input_code = make_code(test.input, { beautify: true });
var input_code = make_code(test.input, {
beautify: true,
quote_style: 3,
keep_quoted_props: true
});
if (test.mangle_props) {
input = U.mangle_properties(input, test.mangle_props);
}

4
tools/exports.js
View File

@@ -17,3 +17,7 @@ exports["string_template"] = string_template;
exports["tokenizer"] = tokenizer;
exports["is_identifier"] = is_identifier;
exports["SymbolDef"] = SymbolDef;
if (typeof DEBUG !== "undefined" && DEBUG) {
exports["EXPECT_DIRECTIVE"] = EXPECT_DIRECTIVE;
}

5
tools/node.js
View File

@@ -25,11 +25,12 @@ var FILES = exports.FILES = [
var UglifyJS = exports;
new Function("MOZ_SourceMap", "exports", FILES.map(function(file){
new Function("MOZ_SourceMap", "exports", "DEBUG", FILES.map(function(file){
return fs.readFileSync(file, "utf8");
}).join("\n\n"))(
require("source-map"),
UglifyJS
UglifyJS,
!!global.UGLIFY_DEBUG
);
UglifyJS.AST_Node.warn_function = function(txt) {