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fix corner cases in preserve_line (#3212)

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This commit is contained in:
Alex Lam S.L
2018-07-13 01:51:10 +08:00
committed by GitHub
parent 018a5a750a
commit bcebacbb9e
15 changed files with 538 additions and 383 deletions
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4
README.md
View File

@@ -857,8 +857,8 @@ can pass additional arguments that control the code output:
adjust for this text. Can be used to insert a comment containing
licensing information, for example.
- `preserve_line` (default `false`) -- pass `true` to preserve lines, but it
only works if `beautify` is set to `false`.
- `preserve_line` (default `false`) -- pass `true` to retain line numbering on
a best effort basis.
- `quote_keys` (default `false`) -- pass `true` to quote all keys in literal
objects

2
bin/uglifyjs
View File

@@ -100,7 +100,7 @@ if (program.mangleProps) {
if (typeof program.mangleProps != "object") program.mangleProps = {};
if (!Array.isArray(program.mangleProps.reserved)) program.mangleProps.reserved = [];
require("../tools/domprops").forEach(function(name) {
UglifyJS._push_uniq(program.mangleProps.reserved, name);
UglifyJS.push_uniq(program.mangleProps.reserved, name);
});
}
if (typeof options.mangle != "object") options.mangle = {};

87
lib/output.js
View File

@@ -198,16 +198,24 @@ function OutputStream(options) {
/* -----[ beautification/minification ]----- */
var has_parens = false;
var line_end = 0;
var line_fixed = true;
var might_need_space = false;
var might_need_semicolon = false;
var might_add_newline = 0;
var need_newline_indented = false;
var need_space = false;
var newline_insert = -1;
var last = "";
var mapping_token, mapping_name, mappings = options.source_map && [];
var do_add_mapping = mappings ? function() {
var adjust_mappings = mappings ? function(line, col) {
mappings.forEach(function(mapping) {
mapping.line += line;
mapping.col += col;
});
} : noop;
var flush_mappings = mappings ? function() {
mappings.forEach(function(mapping) {
try {
options.source_map.add(
@@ -230,31 +238,30 @@ function OutputStream(options) {
mappings = [];
} : noop;
var ensure_line_len = options.max_line_len ? function() {
if (current_col > options.max_line_len) {
if (might_add_newline) {
var left = OUTPUT.slice(0, might_add_newline);
var right = OUTPUT.slice(might_add_newline);
if (mappings) {
var delta = right.length - current_col;
mappings.forEach(function(mapping) {
mapping.line++;
mapping.col += delta;
});
}
OUTPUT = left + "\n" + right;
current_line++;
current_pos++;
function insert_newlines(count) {
var index = OUTPUT.lastIndexOf("\n");
if (line_end < index) line_end = index;
var left = OUTPUT.slice(0, line_end);
var right = OUTPUT.slice(line_end);
adjust_mappings(count, right.length - current_col);
current_line += count;
current_pos += count;
current_col = right.length;
OUTPUT = left;
while (count--) OUTPUT += "\n";
OUTPUT += right;
}
var fix_line = options.max_line_len ? function() {
if (line_fixed) {
if (current_col > options.max_line_len) {
AST_Node.warn("Output exceeds {max_line_len} characters", options);
}
return;
}
if (might_add_newline) {
might_add_newline = 0;
do_add_mapping();
}
if (current_col > options.max_line_len) insert_newlines(1);
line_fixed = true;
flush_mappings();
} : noop;
var requireSemicolonChars = makePredicate("( [ + * / - , .");
@@ -286,7 +293,7 @@ function OutputStream(options) {
current_col++;
current_pos++;
} else {
ensure_line_len();
fix_line();
OUTPUT += "\n";
current_pos++;
current_line++;
@@ -304,18 +311,6 @@ function OutputStream(options) {
}
}
if (!options.beautify && options.preserve_line && stack[stack.length - 1]) {
var target_line = stack[stack.length - 1].start.line;
while (current_line < target_line) {
ensure_line_len();
OUTPUT += "\n";
current_pos++;
current_line++;
current_col = 0;
might_need_space = false;
}
}
if (might_need_space) {
if ((is_identifier_char(prev)
&& (is_identifier_char(ch) || ch == "\\"))
@@ -337,7 +332,7 @@ function OutputStream(options) {
col: current_col
});
mapping_token = false;
if (!might_add_newline) do_add_mapping();
if (line_fixed) flush_mappings();
}
OUTPUT += str;
@@ -347,7 +342,7 @@ function OutputStream(options) {
current_line += n;
current_col += a[0].length;
if (n > 0) {
ensure_line_len();
fix_line();
current_col = a[n].length;
}
last = str;
@@ -374,9 +369,10 @@ function OutputStream(options) {
return ret;
} : function(col, cont) { return cont() };
var may_add_newline = options.max_line_len ? function() {
ensure_line_len();
might_add_newline = OUTPUT.length;
var may_add_newline = options.max_line_len || options.preserve_line ? function() {
fix_line();
line_end = OUTPUT.length;
line_fixed = false;
} : noop;
var newline = options.beautify ? function() {
@@ -455,9 +451,7 @@ function OutputStream(options) {
} : noop;
function get() {
if (might_add_newline) {
ensure_line_len();
}
if (!line_fixed) fix_line();
return OUTPUT;
}
@@ -622,7 +616,14 @@ function OutputStream(options) {
col : function() { return current_col },
pos : function() { return current_pos },
push_node : function(node) { stack.push(node) },
pop_node : function() { return stack.pop() },
pop_node : options.preserve_line ? function() {
var node = stack.pop();
if (node.start && node.start.line > current_line) {
insert_newlines(node.start.line - current_line);
}
} : function() {
stack.pop();
},
parent : function(n) {
return stack[stack.length - 2 - (n || 0)];
}

3
lib/utils.js
View File

@@ -162,8 +162,7 @@ var MAP = (function() {
})();
function push_uniq(array, el) {
if (array.indexOf(el) < 0)
array.push(el);
if (array.indexOf(el) < 0) return array.push(el);
}
function string_template(text, props) {

20
test/compress/evaluate.js
View File

@@ -1199,7 +1199,7 @@ issue_2231_1: {
}
expect_stdout: true
expect_warnings: [
"WARN: Error evaluating Object.keys(void 0) [test/compress/evaluate.js:1195,20]",
"WARN: Error evaluating Object.keys(void 0) [test/compress/evaluate.js:1,20]",
]
}
@@ -1216,7 +1216,7 @@ issue_2231_2: {
}
expect_stdout: true
expect_warnings: [
"WARN: Error evaluating Object.getOwnPropertyNames(null) [test/compress/evaluate.js:1212,20]",
"WARN: Error evaluating Object.getOwnPropertyNames(null) [test/compress/evaluate.js:1,20]",
]
}
@@ -1354,14 +1354,14 @@ issue_2535_3: {
}
expect_stdout: true
expect_warnings: [
"WARN: Dropping side-effect-free && [test/compress/evaluate.js:1340,20]",
"WARN: Dropping side-effect-free && [test/compress/evaluate.js:1341,20]",
"WARN: Dropping side-effect-free && [test/compress/evaluate.js:1342,20]",
"WARN: Condition left of && always false [test/compress/evaluate.js:1342,20]",
"WARN: Dropping side-effect-free || [test/compress/evaluate.js:1343,20]",
"WARN: Dropping side-effect-free || [test/compress/evaluate.js:1344,20]",
"WARN: Dropping side-effect-free || [test/compress/evaluate.js:1345,20]",
"WARN: Condition left of || always true [test/compress/evaluate.js:1345,20]",
"WARN: Dropping side-effect-free && [test/compress/evaluate.js:1,20]",
"WARN: Dropping side-effect-free && [test/compress/evaluate.js:2,20]",
"WARN: Dropping side-effect-free && [test/compress/evaluate.js:3,20]",
"WARN: Condition left of && always false [test/compress/evaluate.js:3,20]",
"WARN: Dropping side-effect-free || [test/compress/evaluate.js:4,20]",
"WARN: Dropping side-effect-free || [test/compress/evaluate.js:5,20]",
"WARN: Dropping side-effect-free || [test/compress/evaluate.js:6,20]",
"WARN: Condition left of || always true [test/compress/evaluate.js:6,20]",
]
}

6
test/compress/global_defs.js
View File

@@ -141,9 +141,9 @@ mixed: {
console.log(CONFIG);
}
expect_warnings: [
"WARN: global_defs CONFIG.VALUE redefined [test/compress/global_defs.js:127,22]",
"WARN: global_defs CONFIG.VALUE redefined [test/compress/global_defs.js:128,22]",
"WARN: global_defs CONFIG.VALUE redefined [test/compress/global_defs.js:130,8]",
"WARN: global_defs CONFIG.VALUE redefined [test/compress/global_defs.js:4,22]",
"WARN: global_defs CONFIG.VALUE redefined [test/compress/global_defs.js:5,22]",
"WARN: global_defs CONFIG.VALUE redefined [test/compress/global_defs.js:7,8]",
]
}

82
test/compress/issue-1034.js
View File

@@ -36,10 +36,10 @@ non_hoisted_function_after_return: {
}
}
expect_warnings: [
"WARN: Dropping unreachable code [test/compress/issue-1034.js:20,16]",
"WARN: Dropping unreachable code [test/compress/issue-1034.js:23,16]",
"WARN: Dropping unreachable code [test/compress/issue-1034.js:26,12]",
"WARN: Dropping unused function UnusedFunction [test/compress/issue-1034.js:27,21]"
"WARN: Dropping unreachable code [test/compress/issue-1034.js:4,16]",
"WARN: Dropping unreachable code [test/compress/issue-1034.js:7,16]",
"WARN: Dropping unreachable code [test/compress/issue-1034.js:10,12]",
"WARN: Dropping unused function UnusedFunction [test/compress/issue-1034.js:11,21]"
]
}
@@ -85,18 +85,18 @@ non_hoisted_function_after_return_2a: {
}
}
expect_warnings: [
"WARN: Dropping unreachable code [test/compress/issue-1034.js:68,16]",
"WARN: Declarations in unreachable code! [test/compress/issue-1034.js:68,16]",
"WARN: Dropping unreachable code [test/compress/issue-1034.js:71,16]",
"WARN: Declarations in unreachable code! [test/compress/issue-1034.js:71,16]",
"WARN: Dropping unused variable a [test/compress/issue-1034.js:68,20]",
"WARN: Dropping unused function nope [test/compress/issue-1034.js:75,21]",
"WARN: Dropping unreachable code [test/compress/issue-1034.js:4,16]",
"WARN: Declarations in unreachable code! [test/compress/issue-1034.js:4,16]",
"WARN: Dropping unreachable code [test/compress/issue-1034.js:7,16]",
"WARN: Declarations in unreachable code! [test/compress/issue-1034.js:7,16]",
"WARN: Dropping unused variable a [test/compress/issue-1034.js:4,20]",
"WARN: Dropping unused function nope [test/compress/issue-1034.js:11,21]",
"WARN: pass 0: last_count: Infinity, count: 37",
"WARN: Dropping unreachable code [test/compress/issue-1034.js:73,12]",
"WARN: Declarations in unreachable code! [test/compress/issue-1034.js:73,12]",
"WARN: Dropping unreachable code [test/compress/issue-1034.js:76,12]",
"WARN: Dropping unused variable b [test/compress/issue-1034.js:71,20]",
"WARN: Dropping unused variable c [test/compress/issue-1034.js:73,16]",
"WARN: Dropping unreachable code [test/compress/issue-1034.js:9,12]",
"WARN: Declarations in unreachable code! [test/compress/issue-1034.js:9,12]",
"WARN: Dropping unreachable code [test/compress/issue-1034.js:12,12]",
"WARN: Dropping unused variable b [test/compress/issue-1034.js:7,20]",
"WARN: Dropping unused variable c [test/compress/issue-1034.js:9,16]",
"WARN: pass 1: last_count: 37, count: 18",
]
}
@@ -139,12 +139,11 @@ non_hoisted_function_after_return_2b: {
}
}
expect_warnings: [
// duplicate warnings no longer emitted
"WARN: Dropping unreachable code [test/compress/issue-1034.js:126,16]",
"WARN: Declarations in unreachable code! [test/compress/issue-1034.js:126,16]",
"WARN: Dropping unreachable code [test/compress/issue-1034.js:128,12]",
"WARN: Declarations in unreachable code! [test/compress/issue-1034.js:128,12]",
"WARN: Dropping unreachable code [test/compress/issue-1034.js:132,12]",
"WARN: Dropping unreachable code [test/compress/issue-1034.js:6,16]",
"WARN: Declarations in unreachable code! [test/compress/issue-1034.js:6,16]",
"WARN: Dropping unreachable code [test/compress/issue-1034.js:8,12]",
"WARN: Declarations in unreachable code! [test/compress/issue-1034.js:8,12]",
"WARN: Dropping unreachable code [test/compress/issue-1034.js:12,12]",
]
}
@@ -191,10 +190,10 @@ non_hoisted_function_after_return_strict: {
}
expect_stdout: "8 7"
expect_warnings: [
"WARN: Dropping unreachable code [test/compress/issue-1034.js:171,16]",
"WARN: Dropping unreachable code [test/compress/issue-1034.js:174,16]",
"WARN: Dropping unreachable code [test/compress/issue-1034.js:177,12]",
"WARN: Dropping unused function UnusedFunction [test/compress/issue-1034.js:178,21]",
"WARN: Dropping unreachable code [test/compress/issue-1034.js:5,16]",
"WARN: Dropping unreachable code [test/compress/issue-1034.js:8,16]",
"WARN: Dropping unreachable code [test/compress/issue-1034.js:11,12]",
"WARN: Dropping unused function UnusedFunction [test/compress/issue-1034.js:12,21]",
]
}
@@ -245,18 +244,18 @@ non_hoisted_function_after_return_2a_strict: {
}
expect_stdout: "5 6"
expect_warnings: [
"WARN: Dropping unreachable code [test/compress/issue-1034.js:224,16]",
"WARN: Declarations in unreachable code! [test/compress/issue-1034.js:224,16]",
"WARN: Dropping unreachable code [test/compress/issue-1034.js:227,16]",
"WARN: Declarations in unreachable code! [test/compress/issue-1034.js:227,16]",
"WARN: Dropping unused variable a [test/compress/issue-1034.js:224,20]",
"WARN: Dropping unused function nope [test/compress/issue-1034.js:231,21]",
"WARN: Dropping unreachable code [test/compress/issue-1034.js:5,16]",
"WARN: Declarations in unreachable code! [test/compress/issue-1034.js:5,16]",
"WARN: Dropping unreachable code [test/compress/issue-1034.js:8,16]",
"WARN: Declarations in unreachable code! [test/compress/issue-1034.js:8,16]",
"WARN: Dropping unused variable a [test/compress/issue-1034.js:5,20]",
"WARN: Dropping unused function nope [test/compress/issue-1034.js:12,21]",
"WARN: pass 0: last_count: Infinity, count: 48",
"WARN: Dropping unreachable code [test/compress/issue-1034.js:229,12]",
"WARN: Declarations in unreachable code! [test/compress/issue-1034.js:229,12]",
"WARN: Dropping unreachable code [test/compress/issue-1034.js:232,12]",
"WARN: Dropping unused variable b [test/compress/issue-1034.js:227,20]",
"WARN: Dropping unused variable c [test/compress/issue-1034.js:229,16]",
"WARN: Dropping unreachable code [test/compress/issue-1034.js:10,12]",
"WARN: Declarations in unreachable code! [test/compress/issue-1034.js:10,12]",
"WARN: Dropping unreachable code [test/compress/issue-1034.js:13,12]",
"WARN: Dropping unused variable b [test/compress/issue-1034.js:8,20]",
"WARN: Dropping unused variable c [test/compress/issue-1034.js:10,16]",
"WARN: pass 1: last_count: 48, count: 29",
]
}
@@ -304,11 +303,10 @@ non_hoisted_function_after_return_2b_strict: {
}
expect_stdout: "5 6"
expect_warnings: [
// duplicate warnings no longer emitted
"WARN: Dropping unreachable code [test/compress/issue-1034.js:287,16]",
"WARN: Declarations in unreachable code! [test/compress/issue-1034.js:287,16]",
"WARN: Dropping unreachable code [test/compress/issue-1034.js:289,12]",
"WARN: Declarations in unreachable code! [test/compress/issue-1034.js:289,12]",
"WARN: Dropping unreachable code [test/compress/issue-1034.js:293,12]",
"WARN: Dropping unreachable code [test/compress/issue-1034.js:7,16]",
"WARN: Declarations in unreachable code! [test/compress/issue-1034.js:7,16]",
"WARN: Dropping unreachable code [test/compress/issue-1034.js:9,12]",
"WARN: Declarations in unreachable code! [test/compress/issue-1034.js:9,12]",
"WARN: Dropping unreachable code [test/compress/issue-1034.js:13,12]",
]
}

84
test/compress/issue-1261.js
View File

@@ -48,13 +48,13 @@ pure_function_calls: {
a.b(), f.g();
}
expect_warnings: [
"WARN: Dropping __PURE__ call [test/compress/issue-1261.js:16,8]",
"WARN: Dropping side-effect-free statement [test/compress/issue-1261.js:16,8]",
"WARN: Dropping __PURE__ call [test/compress/issue-1261.js:29,37]",
"WARN: Dropping unused variable iife2 [test/compress/issue-1261.js:29,16]",
"WARN: Dropping side-effect-free statement [test/compress/issue-1261.js:27,8]",
"WARN: Dropping __PURE__ call [test/compress/issue-1261.js:37,8]",
"WARN: Dropping __PURE__ call [test/compress/issue-1261.js:38,31]",
"WARN: Dropping __PURE__ call [test/compress/issue-1261.js:3,8]",
"WARN: Dropping side-effect-free statement [test/compress/issue-1261.js:3,8]",
"WARN: Dropping __PURE__ call [test/compress/issue-1261.js:16,37]",
"WARN: Dropping unused variable iife2 [test/compress/issue-1261.js:16,16]",
"WARN: Dropping side-effect-free statement [test/compress/issue-1261.js:14,8]",
"WARN: Dropping __PURE__ call [test/compress/issue-1261.js:24,8]",
"WARN: Dropping __PURE__ call [test/compress/issue-1261.js:25,31]",
]
}
@@ -110,17 +110,17 @@ pure_function_calls_toplevel: {
a.b(), f.g();
}
expect_warnings: [
"WARN: Dropping __PURE__ call [test/compress/issue-1261.js:77,8]",
"WARN: Dropping side-effect-free statement [test/compress/issue-1261.js:77,8]",
"WARN: Dropping __PURE__ call [test/compress/issue-1261.js:90,37]",
"WARN: Dropping unused variable iife2 [test/compress/issue-1261.js:90,16]",
"WARN: Dropping side-effect-free statement [test/compress/issue-1261.js:88,8]",
"WARN: Dropping __PURE__ call [test/compress/issue-1261.js:105,8]",
"WARN: Dropping __PURE__ call [test/compress/issue-1261.js:106,31]",
"WARN: Dropping __PURE__ call [test/compress/issue-1261.js:82,33]",
"WARN: Dropping unused variable iife1 [test/compress/issue-1261.js:82,12]",
"WARN: Dropping __PURE__ call [test/compress/issue-1261.js:98,45]",
"WARN: Dropping unused variable MyClass [test/compress/issue-1261.js:98,12]",
"WARN: Dropping __PURE__ call [test/compress/issue-1261.js:3,8]",
"WARN: Dropping side-effect-free statement [test/compress/issue-1261.js:3,8]",
"WARN: Dropping __PURE__ call [test/compress/issue-1261.js:16,37]",
"WARN: Dropping unused variable iife2 [test/compress/issue-1261.js:16,16]",
"WARN: Dropping side-effect-free statement [test/compress/issue-1261.js:14,8]",
"WARN: Dropping __PURE__ call [test/compress/issue-1261.js:31,8]",
"WARN: Dropping __PURE__ call [test/compress/issue-1261.js:32,31]",
"WARN: Dropping __PURE__ call [test/compress/issue-1261.js:8,33]",
"WARN: Dropping unused variable iife1 [test/compress/issue-1261.js:8,12]",
"WARN: Dropping __PURE__ call [test/compress/issue-1261.js:24,45]",
"WARN: Dropping unused variable MyClass [test/compress/issue-1261.js:24,12]",
]
}
@@ -155,29 +155,29 @@ should_warn: {
baz();
}
expect_warnings: [
"WARN: Dropping __PURE__ call [test/compress/issue-1261.js:135,61]",
"WARN: Dropping __PURE__ call [test/compress/issue-1261.js:135,23]",
"WARN: Dropping side-effect-free statement [test/compress/issue-1261.js:135,23]",
"WARN: Boolean || always true [test/compress/issue-1261.js:136,23]",
"WARN: Dropping __PURE__ call [test/compress/issue-1261.js:136,23]",
"WARN: Condition always true [test/compress/issue-1261.js:136,23]",
"WARN: Condition left of || always true [test/compress/issue-1261.js:137,8]",
"WARN: Condition always true [test/compress/issue-1261.js:137,8]",
"WARN: Boolean && always false [test/compress/issue-1261.js:138,23]",
"WARN: Dropping __PURE__ call [test/compress/issue-1261.js:138,23]",
"WARN: Condition always false [test/compress/issue-1261.js:138,23]",
"WARN: Condition left of && always false [test/compress/issue-1261.js:139,8]",
"WARN: Condition always false [test/compress/issue-1261.js:139,8]",
"WARN: + in boolean context always true [test/compress/issue-1261.js:140,23]",
"WARN: Dropping __PURE__ call [test/compress/issue-1261.js:140,23]",
"WARN: Condition always true [test/compress/issue-1261.js:140,23]",
"WARN: + in boolean context always true [test/compress/issue-1261.js:141,8]",
"WARN: Dropping __PURE__ call [test/compress/issue-1261.js:141,31]",
"WARN: Condition always true [test/compress/issue-1261.js:141,8]",
"WARN: Dropping __PURE__ call [test/compress/issue-1261.js:142,23]",
"WARN: Condition always true [test/compress/issue-1261.js:143,8]",
"WARN: Dropping __PURE__ call [test/compress/issue-1261.js:143,24]",
"WARN: Dropping __PURE__ call [test/compress/issue-1261.js:144,31]",
"WARN: Condition always false [test/compress/issue-1261.js:144,8]",
"WARN: Dropping __PURE__ call [test/compress/issue-1261.js:1,61]",
"WARN: Dropping __PURE__ call [test/compress/issue-1261.js:1,23]",
"WARN: Dropping side-effect-free statement [test/compress/issue-1261.js:1,23]",
"WARN: Boolean || always true [test/compress/issue-1261.js:2,23]",
"WARN: Dropping __PURE__ call [test/compress/issue-1261.js:2,23]",
"WARN: Condition always true [test/compress/issue-1261.js:2,23]",
"WARN: Condition left of || always true [test/compress/issue-1261.js:3,8]",
"WARN: Condition always true [test/compress/issue-1261.js:3,8]",
"WARN: Boolean && always false [test/compress/issue-1261.js:4,23]",
"WARN: Dropping __PURE__ call [test/compress/issue-1261.js:4,23]",
"WARN: Condition always false [test/compress/issue-1261.js:4,23]",
"WARN: Condition left of && always false [test/compress/issue-1261.js:5,8]",
"WARN: Condition always false [test/compress/issue-1261.js:5,8]",
"WARN: + in boolean context always true [test/compress/issue-1261.js:6,23]",
"WARN: Dropping __PURE__ call [test/compress/issue-1261.js:6,23]",
"WARN: Condition always true [test/compress/issue-1261.js:6,23]",
"WARN: + in boolean context always true [test/compress/issue-1261.js:7,8]",
"WARN: Dropping __PURE__ call [test/compress/issue-1261.js:7,31]",
"WARN: Condition always true [test/compress/issue-1261.js:7,8]",
"WARN: Dropping __PURE__ call [test/compress/issue-1261.js:8,23]",
"WARN: Condition always true [test/compress/issue-1261.js:9,8]",
"WARN: Dropping __PURE__ call [test/compress/issue-1261.js:9,24]",
"WARN: Dropping __PURE__ call [test/compress/issue-1261.js:10,31]",
"WARN: Condition always false [test/compress/issue-1261.js:10,8]",
]
}

12
test/compress/issue-208.js
View File

@@ -64,11 +64,11 @@ mixed: {
x = 0;
}
expect_warnings: [
"WARN: global_defs ENV redefined [test/compress/issue-208.js:45,12]",
"WARN: global_defs FOO redefined [test/compress/issue-208.js:46,12]",
"WARN: global_defs FOO redefined [test/compress/issue-208.js:48,10]",
"WARN: global_defs DEBUG redefined [test/compress/issue-208.js:49,8]",
"WARN: global_defs DEBUG redefined [test/compress/issue-208.js:50,8]",
"WARN: global_defs DEBUG redefined [test/compress/issue-208.js:51,8]",
"WARN: global_defs ENV redefined [test/compress/issue-208.js:1,12]",
"WARN: global_defs FOO redefined [test/compress/issue-208.js:2,12]",
"WARN: global_defs FOO redefined [test/compress/issue-208.js:4,10]",
"WARN: global_defs DEBUG redefined [test/compress/issue-208.js:5,8]",
"WARN: global_defs DEBUG redefined [test/compress/issue-208.js:6,8]",
"WARN: global_defs DEBUG redefined [test/compress/issue-208.js:7,8]",
]
}

2
test/compress/issue-269.js
View File

@@ -93,6 +93,6 @@ regexp: {
RegExp("should", "fail");
}
expect_warnings: [
'WARN: Error converting RegExp("should","fail") [test/compress/issue-269.js:86,2]',
'WARN: Error converting RegExp("should","fail") [test/compress/issue-269.js:5,2]',
]
}

4
test/compress/issue-2719.js
View File

@@ -26,7 +26,7 @@ warn: {
}().length);
}
expect_warnings: [
"WARN: Function.protoype.caller not supported [test/compress/issue-2719.js:17,19]",
"WARN: Function.protoype.arguments not supported [test/compress/issue-2719.js:17,19]",
"WARN: Function.protoype.caller not supported [test/compress/issue-2719.js:5,19]",
"WARN: Function.protoype.arguments not supported [test/compress/issue-2719.js:5,19]",
]
}

181
test/compress/preserve_line.js Normal file
View File

@@ -0,0 +1,181 @@
return_1: {
beautify = {
beautify: false,
preserve_line: true,
}
input: {
console.log(function f() {
return (
f.toString() != 42
);
}());
}
expect_exact: [
"console.log(function f(){",
"",
"return 42!=f.toString()}());",
]
expect_stdout: "true"
}
return_2: {
beautify = {
beautify: true,
preserve_line: true,
}
input: {
console.log(function f() {
return (
f.toString() != 42
);
}());
}
expect_exact: [
"console.log(function f() {",
"",
" return 42 != f.toString();",
"}());",
]
expect_stdout: "true"
}
return_3: {
options = {}
beautify = {
beautify: false,
preserve_line: true,
}
input: {
console.log(function f() {
return (
f.toString() != 42
);
}());
}
expect_exact: [
"console.log(function f(){",
"",
"return 42!=f.toString()}());",
]
expect_stdout: "true"
}
return_4: {
options = {}
beautify = {
beautify: true,
preserve_line: true,
}
input: {
console.log(function f() {
return (
f.toString() != 42
);
}());
}
expect_exact: [
"console.log(function f() {",
"",
" return 42 != f.toString();",
"}());",
]
expect_stdout: "true"
}
return_5: {
beautify = {
beautify: false,
preserve_line: true,
}
input: {
_is_selected = function(tags, slug) {
var ref;
return (ref = _.find(tags, {
slug: slug
})) != null ? ref.selected : void 0;
};
}
expect_exact: [
"_is_selected=function(tags,slug){",
"var ref",
"",
"",
";return null!=(ref=_.find(tags,{slug:slug}))?ref.selected:void 0};",
]
}
return_6: {
beautify = {
beautify: true,
preserve_line: true,
}
input: {
_is_selected = function(tags, slug) {
var ref;
return (ref = _.find(tags, {
slug: slug
})) != null ? ref.selected : void 0;
};
}
expect_exact: [
"_is_selected = function(tags, slug) {",
" var ref;",
"",
"",
" return null != (ref = _.find(tags, {",
" slug: slug",
" })) ? ref.selected : void 0;",
"};",
]
}
return_7: {
options = {}
mangle = {}
beautify = {
beautify: false,
preserve_line: true,
}
input: {
_is_selected = function(tags, slug) {
var ref;
return (ref = _.find(tags, {
slug: slug
})) != null ? ref.selected : void 0;
};
}
expect_exact: [
"_is_selected=function(e,l){",
"var n",
"",
"",
";return null!=(n=_.find(e,{slug:l}))?n.selected:void 0};",
]
}
return_8: {
options = {}
mangle = {}
beautify = {
beautify: true,
preserve_line: true,
}
input: {
_is_selected = function(tags, slug) {
var ref;
return (ref = _.find(tags, {
slug: slug
})) != null ? ref.selected : void 0;
};
}
expect_exact: [
"_is_selected = function(e, l) {",
" var n;",
"",
"",
" return null != (n = _.find(e, {",
" slug: l",
" })) ? n.selected : void 0;",
"};",
]
}

14
test/exports.js
View File

@@ -1,14 +1,16 @@
exports["Compressor"] = Compressor;
exports["JS_Parse_Error"] = JS_Parse_Error;
exports["OutputStream"] = OutputStream;
exports["SourceMap"] = SourceMap;
exports["TreeWalker"] = TreeWalker;
exports["base54"] = base54;
exports["Compressor"] = Compressor;
exports["defaults"] = defaults;
exports["is_identifier"] = is_identifier;
exports["JS_Parse_Error"] = JS_Parse_Error;
exports["mangle_properties"] = mangle_properties;
exports["minify"] = minify;
exports["OutputStream"] = OutputStream;
exports["parse"] = parse;
exports["push_uniq"] = push_uniq;
exports["reserve_quoted_keys"] = reserve_quoted_keys;
exports["SourceMap"] = SourceMap;
exports["string_template"] = string_template;
exports["tokenizer"] = tokenizer;
exports["is_identifier"] = is_identifier;
exports["TreeTransformer"] = TreeTransformer;
exports["TreeWalker"] = TreeWalker;

410
test/run-tests.js
View File

@@ -23,68 +23,200 @@ require("./mocha.js");
/* -----[ utils ]----- */
function tmpl() {
return U.string_template.apply(this, arguments);
function evaluate(code) {
if (code instanceof U.AST_Node) code = make_code(code, { beautify: true });
return new Function("return(" + code + ")")();
}
function log() {
var txt = tmpl.apply(this, arguments);
console.log("%s", txt);
console.log("%s", tmpl.apply(null, arguments));
}
function log_directory(dir) {
log("*** Entering [{dir}]", { dir: dir });
function make_code(ast, options) {
var stream = U.OutputStream(options);
ast.print(stream);
return stream.get();
}
function log_start_file(file) {
log("--- {file}", { file: file });
}
function log_test(name) {
log(" Running test [{name}]", { name: name });
}
function find_test_files(dir) {
return fs.readdirSync(dir).filter(function(name) {
return /\.js$/i.test(name);
function parse_test(file) {
var script = fs.readFileSync(file, "utf8");
// TODO try/catch can be removed after fixing https://github.com/mishoo/UglifyJS2/issues/348
try {
var ast = U.parse(script, {
filename: file
});
}
function test_directory(dir) {
return path.resolve(tests_dir, dir);
}
function as_toplevel(input, mangle_options) {
if (!(input instanceof U.AST_BlockStatement))
throw new Error("Unsupported input syntax");
for (var i = 0; i < input.body.length; i++) {
var stat = input.body[i];
if (stat instanceof U.AST_SimpleStatement && stat.body instanceof U.AST_String)
input.body[i] = new U.AST_Directive(stat.body);
else break;
} catch (e) {
console.log("Caught error while parsing tests in " + file + "\n");
console.log(e);
throw e;
}
var toplevel = new U.AST_Toplevel(input);
toplevel.figure_out_scope(mangle_options);
return toplevel;
var tests = {};
var tw = new U.TreeWalker(function(node, descend) {
if (node instanceof U.AST_LabeledStatement
&& tw.parent() instanceof U.AST_Toplevel) {
var name = node.label.name;
if (name in tests) {
throw new Error('Duplicated test name "' + name + '" in ' + file);
}
tests[name] = get_one_test(name, node.body);
return true;
}
if (!(node instanceof U.AST_Toplevel)) croak(node);
});
ast.walk(tw);
return tests;
function croak(node) {
throw new Error(tmpl("Can't understand test file {file} [{line},{col}]\n{code}", {
file: file,
line: node.start.line,
col: node.start.col,
code: make_code(node, { beautify: false })
}));
}
function read_string(stat) {
if (stat.TYPE == "SimpleStatement") {
var body = stat.body;
switch(body.TYPE) {
case "String":
return body.value;
case "Array":
return body.elements.map(function(element) {
if (element.TYPE !== "String")
throw new Error("Should be array of strings");
return element.value;
}).join("\n");
}
}
throw new Error("Should be string or array of strings");
}
function get_one_test(name, block) {
var test = { name: name, options: {} };
var tw = new U.TreeWalker(function(node, descend) {
if (node instanceof U.AST_Assign) {
if (!(node.left instanceof U.AST_SymbolRef)) {
croak(node);
}
var name = node.left.name;
test[name] = evaluate(node.right);
return true;
}
if (node instanceof U.AST_LabeledStatement) {
var label = node.label;
assert.ok([
"input",
"expect",
"expect_exact",
"expect_warnings",
"expect_stdout",
"node_version",
].indexOf(label.name) >= 0, tmpl("Unsupported label {name} [{line},{col}]", {
name: label.name,
line: label.start.line,
col: label.start.col
}));
var stat = node.body;
if (label.name == "expect_exact" || label.name == "node_version") {
test[label.name] = read_string(stat);
} else if (label.name == "expect_stdout") {
var body = stat.body;
if (body instanceof U.AST_Boolean) {
test[label.name] = body.value;
} else if (body instanceof U.AST_Call) {
var ctor = global[body.expression.name];
assert.ok(ctor === Error || ctor.prototype instanceof Error, tmpl("Unsupported expect_stdout format [{line},{col}]", {
line: label.start.line,
col: label.start.col
}));
test[label.name] = ctor.apply(null, body.args.map(function(node) {
assert.ok(node instanceof U.AST_Constant, tmpl("Unsupported expect_stdout format [{line},{col}]", {
line: label.start.line,
col: label.start.col
}));
return node.value;
}));
} else {
test[label.name] = read_string(stat) + "\n";
}
} else {
test[label.name] = stat;
}
return true;
}
});
block.walk(tw);
return test;
}
}
// Try to reminify original input with standard options
// to see if it matches expect_stdout.
function reminify(orig_options, input_code, input_formatted, expect_stdout) {
for (var i = 0; i < minify_options.length; i++) {
var options = JSON.parse(minify_options[i]);
if (options.compress) [
"keep_fargs",
"keep_fnames",
].forEach(function(name) {
if (name in orig_options) {
options.compress[name] = orig_options[name];
}
});
var options_formatted = JSON.stringify(options, null, 4);
var result = U.minify(input_code, options);
if (result.error) {
log("!!! failed input reminify\n---INPUT---\n{input}\n---OPTIONS---\n{options}\n--ERROR---\n{error}\n\n", {
input: input_formatted,
options: options_formatted,
error: result.error,
});
return false;
} else {
var stdout = run_code(result.code);
if (typeof expect_stdout != "string" && typeof stdout != "string" && expect_stdout.name == stdout.name) {
stdout = expect_stdout;
}
if (!sandbox.same_stdout(expect_stdout, stdout)) {
log("!!! failed running reminified input\n---INPUT---\n{input}\n---OPTIONS---\n{options}\n---OUTPUT---\n{output}\n---EXPECTED {expected_type}---\n{expected}\n---ACTUAL {actual_type}---\n{actual}\n\n", {
input: input_formatted,
options: options_formatted,
output: result.code,
expected_type: typeof expect_stdout == "string" ? "STDOUT" : "ERROR",
expected: expect_stdout,
actual_type: typeof stdout == "string" ? "STDOUT" : "ERROR",
actual: stdout,
});
return false;
}
}
}
return true;
}
function run_code(code) {
var result = sandbox.run_code(code, true);
return typeof result == "string" ? result.replace(/\u001b\[\d+m/g, "") : result;
}
function run_compress_tests() {
var dir = test_directory("compress");
log_directory("compress");
var files = find_test_files(dir);
function test_file(file) {
log_start_file(file);
var dir = path.resolve(tests_dir, "compress");
fs.readdirSync(dir).filter(function(name) {
return /\.js$/i.test(name);
}).forEach(function(file) {
log("--- {file}", { file: file });
function test_case(test) {
log_test(test.name);
log(" Running test [{name}]", { name: test.name });
var output_options = test.beautify || {};
var expect;
if (test.expect) {
expect = make_code(as_toplevel(test.expect, test.mangle), output_options);
expect = make_code(to_toplevel(test.expect, test.mangle), output_options);
} else {
expect = test.expect_exact;
}
var input = as_toplevel(test.input, test.mangle);
var input_code = make_code(input, output_options);
var input = to_toplevel(test.input, test.mangle);
var input_code = make_code(input);
var input_formatted = make_code(test.input, {
beautify: true,
quote_style: 3,
@@ -209,185 +341,27 @@ function run_compress_tests() {
failed_files[file] = 1;
}
}
}
files.forEach(function(file) {
test_file(file);
});
}
function parse_test(file) {
var script = fs.readFileSync(file, "utf8");
// TODO try/catch can be removed after fixing https://github.com/mishoo/UglifyJS2/issues/348
try {
var ast = U.parse(script, {
filename: file
});
} catch (e) {
console.log("Caught error while parsing tests in " + file + "\n");
console.log(e);
throw e;
}
var tests = {};
var tw = new U.TreeWalker(function(node, descend) {
if (node instanceof U.AST_LabeledStatement
&& tw.parent() instanceof U.AST_Toplevel) {
var name = node.label.name;
if (name in tests) {
throw new Error('Duplicated test name "' + name + '" in ' + file);
}
tests[name] = get_one_test(name, node.body);
return true;
}
if (!(node instanceof U.AST_Toplevel)) croak(node);
});
ast.walk(tw);
return tests;
function tmpl() {
return U.string_template.apply(null, arguments);
}
function croak(node) {
throw new Error(tmpl("Can't understand test file {file} [{line},{col}]\n{code}", {
file: file,
line: node.start.line,
col: node.start.col,
code: make_code(node, { beautify: false })
}));
}
function read_string(stat) {
if (stat.TYPE == "SimpleStatement") {
var body = stat.body;
switch(body.TYPE) {
case "String":
return body.value;
case "Array":
return body.elements.map(function(element) {
if (element.TYPE !== "String")
throw new Error("Should be array of strings");
return element.value;
}).join("\n");
}
}
throw new Error("Should be string or array of strings");
}
function get_one_test(name, block) {
var test = { name: name, options: {} };
var tw = new U.TreeWalker(function(node, descend) {
if (node instanceof U.AST_Assign) {
if (!(node.left instanceof U.AST_SymbolRef)) {
croak(node);
}
var name = node.left.name;
test[name] = evaluate(node.right);
return true;
}
if (node instanceof U.AST_LabeledStatement) {
var label = node.label;
assert.ok(
[
"input",
"expect",
"expect_exact",
"expect_warnings",
"expect_stdout",
"node_version",
].indexOf(label.name) >= 0,
tmpl("Unsupported label {name} [{line},{col}]", {
name: label.name,
line: label.start.line,
col: label.start.col
})
);
var stat = node.body;
if (label.name == "expect_exact" || label.name == "node_version") {
test[label.name] = read_string(stat);
} else if (label.name == "expect_stdout") {
var body = stat.body;
if (body instanceof U.AST_Boolean) {
test[label.name] = body.value;
} else if (body instanceof U.AST_Call) {
var ctor = global[body.expression.name];
assert.ok(ctor === Error || ctor.prototype instanceof Error, tmpl("Unsupported expect_stdout format [{line},{col}]", {
line: label.start.line,
col: label.start.col
}));
test[label.name] = ctor.apply(null, body.args.map(function(node) {
assert.ok(node instanceof U.AST_Constant, tmpl("Unsupported expect_stdout format [{line},{col}]", {
line: label.start.line,
col: label.start.col
}));
return node.value;
}));
function to_toplevel(input, mangle_options) {
if (!(input instanceof U.AST_BlockStatement)) throw new Error("Unsupported input syntax");
var directive = true;
var offset = input.start.line;
var tokens = [];
var toplevel = new U.AST_Toplevel(input.transform(new U.TreeTransformer(function(node) {
if (U.push_uniq(tokens, node.start)) node.start.line -= offset;
if (!directive || node === input) return;
if (node instanceof U.AST_SimpleStatement && node.body instanceof U.AST_String) {
return new U.AST_Directive(node.body);
} else {
test[label.name] = read_string(stat) + "\n";
directive = false;
}
} else {
test[label.name] = stat;
}
return true;
}
});
block.walk(tw);
return test;
};
}
function make_code(ast, options) {
var stream = U.OutputStream(options);
ast.print(stream);
return stream.get();
}
function evaluate(code) {
if (code instanceof U.AST_Node)
code = make_code(code, { beautify: true });
return new Function("return(" + code + ")")();
}
function run_code(code) {
var result = sandbox.run_code(code, true);
return typeof result == "string" ? result.replace(/\u001b\[\d+m/g, "") : result;
}
// Try to reminify original input with standard options
// to see if it matches expect_stdout.
function reminify(orig_options, input_code, input_formatted, expect_stdout) {
for (var i = 0; i < minify_options.length; i++) {
var options = JSON.parse(minify_options[i]);
if (options.compress) [
"keep_fargs",
"keep_fnames",
].forEach(function(name) {
if (name in orig_options) {
options.compress[name] = orig_options[name];
}
});
var options_formatted = JSON.stringify(options, null, 4);
var result = U.minify(input_code, options);
if (result.error) {
log("!!! failed input reminify\n---INPUT---\n{input}\n---OPTIONS---\n{options}\n--ERROR---\n{error}\n\n", {
input: input_formatted,
options: options_formatted,
error: result.error,
});
return false;
} else {
var stdout = run_code(result.code);
if (typeof expect_stdout != "string" && typeof stdout != "string" && expect_stdout.name == stdout.name) {
stdout = expect_stdout;
}
if (!sandbox.same_stdout(expect_stdout, stdout)) {
log("!!! failed running reminified input\n---INPUT---\n{input}\n---OPTIONS---\n{options}\n---OUTPUT---\n{output}\n---EXPECTED {expected_type}---\n{expected}\n---ACTUAL {actual_type}---\n{actual}\n\n", {
input: input_formatted,
options: options_formatted,
output: result.code,
expected_type: typeof expect_stdout == "string" ? "STDOUT" : "ERROR",
expected: expect_stdout,
actual_type: typeof stdout == "string" ? "STDOUT" : "ERROR",
actual: stdout,
});
return false;
}
}
}
return true;
})));
toplevel.figure_out_scope(mangle_options);
return toplevel;
}

6
tools/exports.js
View File

@@ -1,6 +1,6 @@
exports["Dictionary"] = Dictionary;
exports["TreeWalker"] = TreeWalker;
exports["TreeTransformer"] = TreeTransformer;
exports["minify"] = minify;
exports["parse"] = parse;
exports["_push_uniq"] = push_uniq;
exports["push_uniq"] = push_uniq;
exports["TreeTransformer"] = TreeTransformer;
exports["TreeWalker"] = TreeWalker;