32 lines
1.6 KiB
C
32 lines
1.6 KiB
C
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#ifndef JHAMMER_H
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#define JHAMMER_H
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#include <jni.h>
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#include "internal.h"
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#include <assert.h>
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// Unsafe (non-asserting) helpers
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#define FIND_CLASS_(env, class) (*env)->FindClass(env, class)
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#define REFCONSTRUCTOR_(env, class) (*env)->GetMethodID(env, class, "<init>", "(J)V")
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#define NEW_INSTANCE_(env, class, inner) (*env)->NewObject(env, class, REFCONSTRUCTOR_(env, class), (jlong)inner)
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// Safer versions, assert that the result is not NULL
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// If one of those asserts fails, it most likely means that there's a typo (wrong class name or method signature) or big trouble (OOM)
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#define FIND_CLASS(target, env, class) target = FIND_CLASS_(env, class); assert(target != NULL)
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#define REFCONSTRUCTOR(target, env, class) target = REFCONSTRUCTOR_(env, class); assert(target != NULL)
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#define NEW_INSTANCE(target, env, class, inner) target = NEW_INSTANCE_(env, class, inner); assert(target != NULL)
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// Since there's a LOT of wrapping/unwrapping HParsers, these macros make it a bit more readable
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#define PARSER_CLASS "com/upstandinghackers/hammer/Parser"
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#define PARSER_REF(env) (*env)->GetFieldID(env, FIND_CLASS_(env, PARSER_CLASS), "inner", "J")
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#define RETURNWRAP(env, inner) jclass __cls=FIND_CLASS_(env, PARSER_CLASS); \
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assert(__cls != NULL); \
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jmethodID __constructor = REFCONSTRUCTOR_(env, __cls); \
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assert(__constructor != NULL); \
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return (*env)->NewObject(env, __cls, __constructor, (jlong)inner)
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#define UNWRAP(env, object) (HParser *)((*env)->GetLongField(env, object, PARSER_REF(env)))
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#endif
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