68 lines
1.2 KiB
C++
68 lines
1.2 KiB
C++
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#ifndef _OUTPUT_HPP
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#define _OUTPUT_HPP
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namespace MTGosHAL {
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enum class Base : int {
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BINARY=2,
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TERNARY,
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BASE4,
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BASE5,
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BASE6,
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BASE7,
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OCTAL,
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BASE9,
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DECIMAL,
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BASE11,
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BASE12,
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BASE13,
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BASE14,
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BASE15,
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HEXADECIMAL
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};
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/* abstract */ class Output {
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private:
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virtual void putChar(char c) { /*ignore*/ };
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auto puts(const char* s) -> void {
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int i=0;
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while(s[i]!='\0')
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putChar(s[i++]);
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}
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int base=10;
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public:
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template <typename T>
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auto operator<<(T output) -> Output & {
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puts(output); //kernel won't compile if class cannot be converted into string
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return *this;
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}
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};
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template <>
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auto Output::operator<<<Base>(Base output) -> Output & {
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base=static_cast<int>(output);
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return *this;
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}
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template <>
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auto Output::operator<<<int>(int output) -> Output & {
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const char* chars="0123456789ABCDEF";
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char buf[33];
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buf[32]='\0';
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char* ptr=buf+31;
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do {
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*(ptr--)=chars[output%base];
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output/=base;
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} while(output && (ptr!=buf));
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puts(ptr+1);
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return *this;
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}
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template <>
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auto Output::operator<<<char>(char output) -> Output & {
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putChar(output);
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return *this;
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}
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template <>
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auto Output::operator<<<char*>(char* output) -> Output & {
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puts(output);
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return *this;
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}
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}
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#endif
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