Make invalid break/continue statements an early syntax error.

Make invalid break/continue statements an early syntax error.

Previously we delayed the throwing of syntax errors until runtime, so
unreachable errors didn't get reported.
To match a change in JSC, we now stop parsing and report the error immediately.

BUG=69736
TEST=

Committed: http://code.google.com/p/v8/source/detail?r=6341

[Mads Ager (chromium), 2011-01-17 09:29:13]

LGTM

http://codereview.chromium.org/6355006/diff/1/src/parser.cc
File src/parser.cc (right):

http://codereview.chromium.org/6355006/diff/1/src/parser.cc#newcode795
src/parser.cc:795: source_location.beg_pos, source_location.end_pos);
I find one argument per line more readable.

http://codereview.chromium.org/6355006/diff/1/test/mjsunit/delay-syntax-error.js
File test/mjsunit/delay-syntax-error.js (right):

http://codereview.chromium.org/6355006/diff/1/test/mjsunit/delay-syntax-error...
test/mjsunit/delay-syntax-error.js:30: // CHANGED in Jan. 2011. JSC switched to
reporting these syntax errors
Let's just update the description with the current behavior instead of keeping a
change log?

http://codereview.chromium.org/6355006/diff/1/test/mjsunit/delay-syntax-error...
test/mjsunit/delay-syntax-error.js:36: // Do throw syntax errors for illegal
break and continue at compile time.
Do throw -> Throw

http://codereview.chromium.org/6355006/diff/1/test/mjsunit/regress/regress-99...
File test/mjsunit/regress/regress-990205.js (right):

http://codereview.chromium.org/6355006/diff/1/test/mjsunit/regress/regress-99...
test/mjsunit/regress/regress-990205.js:28: // We not throw syntax errors early
for invalid break and continue
We not -> We

[Lasse Reichstein, 2011-01-17 09:34:08]

http://codereview.chromium.org/6355006/diff/1/src/parser.cc
File src/parser.cc (right):

http://codereview.chromium.org/6355006/diff/1/src/parser.cc#newcode795
src/parser.cc:795: source_location.beg_pos, source_location.end_pos);
Fixed here and above.

http://codereview.chromium.org/6355006/diff/1/test/mjsunit/delay-syntax-error.js
File test/mjsunit/delay-syntax-error.js (right):

http://codereview.chromium.org/6355006/diff/1/test/mjsunit/delay-syntax-error...
test/mjsunit/delay-syntax-error.js:30: // CHANGED in Jan. 2011. JSC switched to
reporting these syntax errors
Done.

http://codereview.chromium.org/6355006/diff/1/test/mjsunit/delay-syntax-error...
test/mjsunit/delay-syntax-error.js:36: // Do throw syntax errors for illegal
break and continue at compile time.
Done.

http://codereview.chromium.org/6355006/diff/1/test/mjsunit/regress/regress-99...
File test/mjsunit/regress/regress-990205.js (right):

http://codereview.chromium.org/6355006/diff/1/test/mjsunit/regress/regress-99...
test/mjsunit/regress/regress-990205.js:28: // We not throw syntax errors early
for invalid break and continue
Should have been "We now". Changed to just "We".