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samples/java_interface/java_calls_mercury/mercury_main.m:
samples/java_interface/mercury_calls_java/java_main_int.m:
samples/java_interface/standalone_java/JavaMain.java:
samples/java_interface/standalone_java/Makefile:
samples/java_interface/standalone_java/mercury_lib.m:
As above.
31 lines
1.0 KiB
Mathematica
31 lines
1.0 KiB
Mathematica
% This module defines a Mercury predicate java_main/2 that acts as an interface
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% to the Java method java_main(), which is defined in the file JavaMain.java.
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% This source file is hereby placed in the public domain.
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:- module java_main_int.
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:- interface.
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:- import_module io.
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% Since the java_main() function has side effects, we declare the corresponding
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% Mercury predicate as one that takes an I/O satate pair. If we did not do
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% this, the Mercury compiler might optimize away calls to it!
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:- pred java_main(io::di, io::uo) is det.
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:- implementation.
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% Import the Java class containing the method java_main.
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% As usual for Java, this is not necessary; you may also
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% fully qualify the method at the call site.
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:- pragma foreign_decl("Java", "import my_package.JavaMain;").
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% Define the Mercury predicate java_main/2 to call the Java method
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% java_main().
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:- pragma foreign_proc("Java",
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java_main(_IO0::di, _IO::uo),
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[promise_pure, will_not_call_mercury],
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"
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JavaMain.java_main();
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").
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