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juvix/tests/positive/HelloWorld.mjuvix
Paul Cadman 60236e7b58
Add C code generation backend (#68)
* [cbackend] Adds an AST for C

This should cover enough C to implement the microjuvix backend.

* [cbackend] Add C serializer using language-c library

We may decide to write our own serializer for the C AST but this
demonstrates that the C AST is sufficient at least.

* [cbackend] Declarations will always be typed

* [cbackend] Add CPP support to AST

* [cbackend] Rename some names for clarity

* [cbackend] Add translation of InductiveDef to C

* [cbackend] Add CLI for C backend

* [cbackend] Add stdbool.h to file header

* [cbackend] Allow Cpp and Verbatim code inline

* [cbackend] Add a newline after printing C

* [cbackend] Support foreign blocks

* [cbackend] Add support for axioms

* [cbackend] Remove code examples

* [cbackend] wip FunctionDef including Expressions

* [parser] Support esacping '}' inside a foreign block

* [cbackend] Add support for patterns in functions

* [cbackend] Add foreign C support to HelloWorld.mjuvix

* hlint fixes

* More hlint fixes not picked up by pre-commit

* [cbackend] Remove CompileStatement from MonoJuvix

* [cbackend] Add support for compile blocks

* [cbackend] Move compileInfo extraction to MonoJuvixResult

* [minihaskell] Fix compile block support

* [chore] Remove ununsed isBackendSupported function

* [chore] Remove unused imports

* [cbackend] Use a Reader for pattern bindings

* [cbackend] Fix compiler warnings

* [cbackend] Add support for nested patterns

* [cbackend] Use functions to instantiate argument names

* [cbackend] Add non-exhaustive pattern error message

* [cbackend] Adds test for c to WASM compile and execution

* [cbackend] Add links to test dependencies in quickstart

* [cbackend] Add test with inductive types and patterns

* [cbackend] Fix indentation

* [cbackend] Remove ExpressionTyped case

https://github.com/heliaxdev/minijuvix/issues/79

* [lexer] Fix lexing of \ inside a foreign block

* [cbackend] PR review fixes

* [chore] Remove unused import

* [cbackend] Rename CJuvix to MiniC

* [cbackend] Rename MonoJuvixToC to MonoJuvixToMiniC

* [cbackend] Add test for polymorphic function

* [cbackend] Add module for string literals
2022-05-05 14:12:17 +01:00

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module HelloWorld;
-- the foreign keyword has two arguments:
-- 1. The name of the backend.
-- 2. A string. For ease of use, the string is given between braces
-- and can have multiple lines. Space at the beginning and at the end is ignored.
-- The given code is inlined verbatim when compiling to the given backend.
foreign ghc {
import Data.Text
};
foreign c {
#include <stdio.h>
};
axiom Action : Type;
compile Action {
ghc ↦ "IO ()";
c ↦ "int";
};
axiom String : Type;
compile String {
ghc ↦ "[Char]";
c ↦ "char*";
};
axiom putStrLn : String -> Action;
compile putStrLn {
ghc ↦ "putStrLn";
c ↦ "puts";
};
main : Action;
main := putStrLn "hello world";
end;