com.google.inject.internal.InjectorOptionsProcessor Maven / Gradle / Ivy

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package com.google.inject.internal;

import com.google.inject.Stage;
import com.google.inject.internal.InjectorImpl.InjectorOptions;
import com.google.inject.spi.DisableCircularProxiesOption;
import com.google.inject.spi.RequireAtInjectOnConstructorsOption;
import com.google.inject.spi.RequireExactBindingAnnotationsOption;
import com.google.inject.spi.RequireExplicitBindingsOption;

import static com.google.common.base.Preconditions.checkNotNull;
import static com.google.common.base.Preconditions.checkState;

/**
 * A processor to gather injector options.
 */
class InjectorOptionsProcessor extends AbstractProcessor {

    private boolean disableCircularProxies = false;
    private boolean jitDisabled = false;
    private boolean atInjectRequired = false;
    private boolean exactBindingAnnotationsRequired = false;

    InjectorOptionsProcessor(Errors errors) {
        super(errors);
    }

    @Override
    public Boolean visit(DisableCircularProxiesOption option) {
        disableCircularProxies = true;
        return true;
    }

    @Override
    public Boolean visit(RequireExplicitBindingsOption option) {
        jitDisabled = true;
        return true;
    }

    @Override
    public Boolean visit(RequireAtInjectOnConstructorsOption option) {
        atInjectRequired = true;
        return true;
    }

    @Override
    public Boolean visit(RequireExactBindingAnnotationsOption option) {
        exactBindingAnnotationsRequired = true;
        return true;
    }

    InjectorOptions getOptions(Stage stage, InjectorOptions parentOptions) {
        checkNotNull(stage, "stage must be set");
        if (parentOptions == null) {
            return new InjectorOptions(
                    stage,
                    jitDisabled,
                    disableCircularProxies,
                    atInjectRequired,
                    exactBindingAnnotationsRequired);
        } else {
            checkState(stage == parentOptions.stage, "child & parent stage don't match");
            return new InjectorOptions(
                    stage,
                    jitDisabled || parentOptions.jitDisabled,
                    disableCircularProxies || parentOptions.disableCircularProxies,
                    atInjectRequired || parentOptions.atInjectRequired,
                    exactBindingAnnotationsRequired || parentOptions.exactBindingAnnotationsRequired);
        }
    }

}