我正在努力解决助推波，到目前为止，我的运气并不好。
我尝试了网站上的示例代码。它在下面：
#include <iostream>
#include <iomanip>
#include <fstream>
#include <string>
#include <vector>
///////////////////////////////////////////////////////////////////////////////
// Include Wave itself
#include <boost/wave.hpp>
///////////////////////////////////////////////////////////////////////////////
// Include the lexer stuff
#include <boost/wave/cpplexer/cpp_lex_token.hpp> // token class
#include <boost/wave/cpplexer/cpp_lex_iterator.hpp> // lexer class
int main () {
// The following preprocesses a given input file.
// Open the file and read it into a string variable
std::ifstream instream("lex_infile");
std::string input(
std::istreambuf_iterator<char>(instream.rdbuf()),
std::istreambuf_iterator<char>());
// The template boost::wave::cpplexer::lex_token<> is the
// token type to be used by the Wave library.
// This token type is one of the central types throughout
// the library, because it is a template parameter to some
// of the public classes and templates and it is returned
// from the iterators.
// The template boost::wave::cpplexer::lex_iterator<> is
// the lexer iterator to use as the token source for the
// preprocessing engine. In this case this is parametrized
// with the token type.
typedef boost::wave::cpplexer::lex_iterator<
boost::wave::cpplexer::lex_token<> >
lex_iterator_type;
typedef boost::wave::context<
std::string::iterator, lex_iterator_type>
context_type;
context_type ctx(input.begin(), input.end(), "lex_infile");
// At this point you may want to set the parameters of the
// preprocessing as include paths and/or predefined macros.
//ctx.add_include_path("...");
//ctx.add_macro_definition(...);
// Get the preprocessor iterators and use them to generate
// the token sequence.
context_type::iterator_type first = ctx.begin();
context_type::iterator_type last = ctx.end();
std::cout << "HERE" << std::endl;
// The input stream is preprocessed for you during iteration
// over [first, last)
while (first != last) {
std::cout << (*first).get_value() << std::endl;
++first;
}
}
它编译正常，但是当我将文件输入其中时，出现以下错误：
在抛出 'boost::exception_detail::clone_impl >' 的实例后调用终止
what(): boost::wave::preprocess_exception
Aborted
我试图“预处理”的代码位于一个名为 的文件lex_infile中，其内容如下：
#include <oglre>
#include <light>
#include <material>
in vec3 in_Position;
in vec2 in_Texture;
in vec3 in_Normal;
out vec2 textureCoord;
out vec4 pass_Color;
void main() {
gl_Position = pvmMatrix * vec4(in_Position, 1.0);
textureCoord = in_Texture;
vec3 normalDirection = normalize(normalMatrix * in_Normal);
vec3 lightDirection = normalize(vec3(lightSources[0].direction));
vec3 diffuseReflection = vec3(lightSources[0].diffuse) * vec3(mymaterial.diffuse) * max(0.0, dot(normalDirection, lightDirection));
/*
float bug = 0.0;
bvec3 result = equal( diffuseReflection, vec3(0.0, 0.0, 0.0) );
if(result[0]) bug = 1.0;
diffuseReflection.x += bug;
*/
pass_Color = vec4(diffuseReflection, 1.0);
}
我想我需要定义包含位置....我该怎么做呢？
对不起，如果这是简单的东西，我只是有点迷路。