interface99

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  "desc": "Full-featured interfaces for C99",
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  "full_name": "interface99",
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  "github_readme_excerpt": "\u003cdiv align=\"center\"\u003e\n\u003ch1\u003eInterface99\u003c/h1\u003e\n\u003ca href=\"https://github.com/hirrolot/interface99/actions\"\u003e\n\u003cimg src=\"https://github.com/hirrolot/interface99/workflows/C/C++%20CI/badge.svg\"\u003e\n\u003c/a\u003e\n\nFull-featured interfaces inspired by Rust and Golang. Multiple inheritance, superinterfaces, and default implementations supported. No external tools required, pure C99.\n\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cdiv align=\"center\"\u003e\u003cb\u003eShape\u003c/b\u003e\u003c/div\u003e\u003c/td\u003e\n\u003c/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cdiv align=\"left\"\u003e\n\n```c\n#include \u003cinterface99.h\u003e\n\n#include \u003cstdio.h\u003e\n\n#define Shape_IFACE                      \\\n    vfunc( int, perim, const VSelf)      \\\n    vfunc(void, scale, VSelf, int factor)\n\ninterface(Shape);\n```\n\n\u003c/div\u003e\n\u003c/td\u003e\n\u003c/tr\u003e\n\u003c/table\u003e\n\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cdiv align=\"center\"\u003e\u003cb\u003eRectangle\u003c/b\u003e\u003c/div\u003e\u003c/td\u003e\n\u003ctd\u003e\u003cdiv align=\"center\"\u003e\u003cb\u003eTriangle\u003c/b\u003e\u003c/div\u003e\u003c/td\u003e\n\u003c/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cdiv align=\"left\"\u003e\n\n```c\ntypedef struct {\n    int a, b;\n} Rectangle;\n\nint Rectangle_perim(const VSelf) {\n    VSELF(const Rectangle);\n    return (self-\u003ea + self-\u003eb) * 2;\n}\n\nvoid Rectangle_scale(VSelf, int factor) {\n    VSELF(Rectangle);\n    self-\u003ea *= factor;\n    self-\u003eb *= factor;\n}\n\nimpl(Shape, Rectangle);\n```\n\n\u003c/div\u003e\n\u003c/td\u003e\n\u003ctd\u003e\n\u003cdiv align=\"left\"\u003e\n\n```c\ntypedef struct {\n    int a, b, c;\n} Triangle;\n\nint Triangle_perim(const VSelf) {\n    VSELF(const Triangle);\n    return self-\u003ea + self-\u003eb + self-\u003ec;\n}\n\nvoid Triangle_scale(VSelf, int factor) {\n    VSELF(Triangle);\n    self-\u003ea *= factor;\n    self-\u003eb *= factor;\n    self-\u003ec *= factor;\n}\n\nimpl(Shape, Triangle);\n```\n\n\u003c/div\u003e\n\u003c/td\u003e\n\u003c/tr\u003e\n\u003c/table\u003e\n\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cdiv align=\"center\"\u003e\u003cb\u003eTest\u003c/b\u003e\u003c/div\u003e\u003c/td\u003e\n\u003c/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cdiv align=\"left\"\u003e\n\n```c\nvoid test(Shape shape) {\n    printf(\"perim = %d\\n\", VCALL(shape, perim));\n    VCALL(shape, scale, 5);\n    printf(\"perim = %d\\n\", VCALL(shape, perim));\n}\n\nint main(void) {\n    Shape r = DYN_LIT(Rectangle, Shape, {5, 7});\n    Shape t = DYN_LIT(Triangle, Shape, {10, 20, 30});\n\n    test(r);\n    test(t);\n}\n```\n\n\u003c/div\u003e\n\u003c/td\u003e\n\u003c/tr\u003e\n\u003c/table\u003e\n\n\u003c/div\u003e\n\n(Based on [`examples/shape.c`](e",
  "github_repo": "Hirrolot/interface99",
  "github_stars": 354,
  "github_topics": [
    "c99",
    "dynamic-dispatch",
    "generic-programming",
    "macros",
    "metalang99",
    "metaprogramming",
    "object-oriented",
    "oop",
    "polymorphism",
    "type-system",
    "typeclasses"
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  "homepage": "https://github.com/Hirrolot/interface99",
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  "license": "MIT",
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