C++ “‘(’ token”错误之前预期的主表达式
我有这个代码：
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
);
}
编译器给出了这个错误：
nodes.cpp:537:40: 错误：
'('标记之前需要主表达式
nodes.cpp:544:94: 错误：在';'令牌之前应有')'
我不知道它可能是什么，特别是因为该代码示例有另一个语句它做同样的事情，并且不会导致错误。
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.
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评论（4）
您的
(和)在那个大的第一个throw LangException块中不匹配。Your
(and your)don't match in that large, firstthrow LangExceptionblock.编译器会告诉你哪里出了问题。
throw LangException(没有)。The compiler tells you what is wrong. The
throw LangException(doesn't have a).正是它所说的。该行的
';'标记之前缺少')'。没有关闭。
Exactly what it says. You are missing a
‘)’before‘;’token on that line.is not closed.