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fbf35c8b22
samples/java_interface/java_calls_mercury/*.m:
Use spaces instead of tabs.
Delete trailing whitespace.
Fix a cut-and-paste error where exports to C instead of
Java are referred to.
samples/java_interface/mercury_calls_java/Makefile:
Fix the compilation options for this example.
samples/java_interface/mercury_calls_java/mercury_main.m:
Fix formatting.
33 lines
1.0 KiB
Mathematica
33 lines
1.0 KiB
Mathematica
% This module java_main_int defines a Mercury predicate java_main which acts as an
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% interface to the Java method java_main(), which is defined in 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 io.state pair. If we didn't 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 fully qualify the
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% 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 to call the Java method java_main.
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%
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:- pragma foreign_proc("Java",
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java_main(IO0::di, IO::uo),
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[may_call_mercury, promise_pure],
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"
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JavaMain.java_main();
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IO = IO0;
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").
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