C++ "expected primary-expression before ‘(’ token" error - c++

Question

I have this code:
FILE *f = fopen(intPath, "r");
Node *n;
if (f) {
try {
n = parse(f, intPath);
} catch (SyntaxError e) {
fclose(f); /***** line 536 *****/
throw LangException(
builtin_classes::exception_class::create_ImportError(
String::fromAscii(e.filename)->
append(String::fromAscii(":"))->
append(String::fromInt(e.line))->
append(String::fromAscii(":"))->
append(String::fromInt(e.col))->
append(String::fromAscii(": syntax error: "))->
append(String::fromAscii(e.message))
);
}
fclose(f);
return n->eval(scope);
} else {
throw LangException(
builtin_classes::exception_class::create_ImportError(
String::fromAscii("failed to open file for reading")
),
line,
col
);
}
And the compiler gives this error:
nodes.cpp:537:40: error: expected primary-expression before ‘(’ token
nodes.cpp:544:94: error: expected ‘)’ before ‘;’ token
I have no clue what it could be, especially since that code sample has another statement which does the same thing, and it doesn't cause an error.

Answer 1

throw LangException(
builtin_classes::exception_class::create_ImportError(
String::fromAscii(e.filename)->
append(String::fromAscii(":"))->
append(String::fromInt(e.line))->
append(String::fromAscii(":"))->
append(String::fromInt(e.col))->
append(String::fromAscii(": syntax error: "))->
append(String::fromAscii(e.message))
) // This closes the function call
; // You didn't close the throw here!

Answer 2

Your ( and your ) don't match in that large, first throw LangException block.

Answer 3

The compiler tells you what is wrong. The throw LangException( doesn't have a ).

Answer 4

Exactly what it says. You are missing a ‘)’ before ‘;’ token on that line.
LangException(...
is not closed.