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var assert = require("assert");
var uglify = require("../../");
describe("Directives", function() {
it ("Should allow tokenizer to store directives state", function() {
var tokenizer = uglify.tokenizer("", "foo.js");
// Stack level 0
assert.strictEqual(tokenizer.has_directive("use strict"), false);
assert.strictEqual(tokenizer.has_directive("use asm"), false);
assert.strictEqual(tokenizer.has_directive("use thing"), false);
// Stack level 2
tokenizer.push_directives_stack();
tokenizer.push_directives_stack();
tokenizer.add_directive("use strict");
assert.strictEqual(tokenizer.has_directive("use strict"), true);
assert.strictEqual(tokenizer.has_directive("use asm"), false);
assert.strictEqual(tokenizer.has_directive("use thing"), false);
// Stack level 3
tokenizer.push_directives_stack();
tokenizer.add_directive("use strict");
tokenizer.add_directive("use asm");
assert.strictEqual(tokenizer.has_directive("use strict"), true);
assert.strictEqual(tokenizer.has_directive("use asm"), true);
assert.strictEqual(tokenizer.has_directive("use thing"), false);
// Stack level 2
tokenizer.pop_directives_stack();
assert.strictEqual(tokenizer.has_directive("use strict"), true);
assert.strictEqual(tokenizer.has_directive("use asm"), false);
assert.strictEqual(tokenizer.has_directive("use thing"), false);
// Stack level 3
tokenizer.push_directives_stack();
tokenizer.add_directive("use thing");
tokenizer.add_directive("use\\\nasm");
assert.strictEqual(tokenizer.has_directive("use strict"), true);
assert.strictEqual(tokenizer.has_directive("use asm"), false); // Directives are strict!
assert.strictEqual(tokenizer.has_directive("use thing"), true);
// Stack level 2
tokenizer.pop_directives_stack();
assert.strictEqual(tokenizer.has_directive("use strict"), true);
assert.strictEqual(tokenizer.has_directive("use asm"), false);
assert.strictEqual(tokenizer.has_directive("use thing"), false);
// Stack level 1
tokenizer.pop_directives_stack();
assert.strictEqual(tokenizer.has_directive("use strict"), false);
assert.strictEqual(tokenizer.has_directive("use asm"), false);
assert.strictEqual(tokenizer.has_directive("use thing"), false);
// Stack level 0
tokenizer.pop_directives_stack();
assert.strictEqual(tokenizer.has_directive("use strict"), false);
assert.strictEqual(tokenizer.has_directive("use asm"), false);
assert.strictEqual(tokenizer.has_directive("use thing"), false);
});
});
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