Examples with Expr com.google.api.generator.engine.ast.Expr used on opensource projects

Example 31 with Expr

use of com.google.api.generator.engine.ast.Expr in project gapic-generator-java by googleapis.

the class ServiceClientTestClassComposer method createSetUpMethod.

@Override
protected MethodDefinition createSetUpMethod(Service service, Map<String, VariableExpr> classMemberVarExprs, TypeStore typeStore) {
    VariableExpr clientVarExpr = classMemberVarExprs.get(CLIENT_VAR_NAME);
    VariableExpr serviceHelperVarExpr = classMemberVarExprs.get(SERVICE_HELPER_VAR_NAME);
    VariableExpr channelProviderVarExpr = classMemberVarExprs.get(CHANNEL_PROVIDER_VAR_NAME);
    Expr resetServiceHelperExpr = MethodInvocationExpr.builder().setExprReferenceExpr(serviceHelperVarExpr).setMethodName("reset").build();
    Expr channelProviderInitExpr = AssignmentExpr.builder().setVariableExpr(channelProviderVarExpr).setValueExpr(MethodInvocationExpr.builder().setExprReferenceExpr(serviceHelperVarExpr).setMethodName("createChannelProvider").setReturnType(channelProviderVarExpr.type()).build()).build();
    TypeNode settingsType = typeStore.get(ClassNames.getServiceSettingsClassName(service));
    VariableExpr localSettingsVarExpr = VariableExpr.withVariable(Variable.builder().setName("settings").setType(settingsType).build());
    Expr settingsBuilderExpr = MethodInvocationExpr.builder().setStaticReferenceType(settingsType).setMethodName("newBuilder").build();
    Function<Expr, BiFunction<String, Expr, MethodInvocationExpr>> methodBuilderFn = methodExpr -> (mName, argExpr) -> MethodInvocationExpr.builder().setExprReferenceExpr(methodExpr).setMethodName(mName).setArguments(Arrays.asList(argExpr)).build();
    settingsBuilderExpr = methodBuilderFn.apply(settingsBuilderExpr).apply("setTransportChannelProvider", classMemberVarExprs.get(CHANNEL_PROVIDER_VAR_NAME));
    settingsBuilderExpr = methodBuilderFn.apply(settingsBuilderExpr).apply("setCredentialsProvider", MethodInvocationExpr.builder().setStaticReferenceType(FIXED_TYPESTORE.get("NoCredentialsProvider")).setMethodName("create").build());
    settingsBuilderExpr = MethodInvocationExpr.builder().setExprReferenceExpr(settingsBuilderExpr).setMethodName("build").setReturnType(localSettingsVarExpr.type()).build();
    Expr initLocalSettingsExpr = AssignmentExpr.builder().setVariableExpr(localSettingsVarExpr.toBuilder().setIsDecl(true).build()).setValueExpr(settingsBuilderExpr).build();
    Expr initClientExpr = AssignmentExpr.builder().setVariableExpr(clientVarExpr).setValueExpr(MethodInvocationExpr.builder().setStaticReferenceType(typeStore.get(ClassNames.getServiceClientClassName(service))).setMethodName("create").setArguments(Arrays.asList(localSettingsVarExpr)).setReturnType(clientVarExpr.type()).build()).build();
    return MethodDefinition.builder().setAnnotations(Arrays.asList(AnnotationNode.withType(FIXED_TYPESTORE.get("Before")))).setScope(ScopeNode.PUBLIC).setReturnType(TypeNode.VOID).setName("setUp").setThrowsExceptions(Arrays.asList(FIXED_TYPESTORE.get("IOException"))).setBody(Arrays.asList(resetServiceHelperExpr, channelProviderInitExpr, initLocalSettingsExpr, initClientExpr).stream().map(e -> ExprStatement.withExpr(e)).collect(Collectors.toList())).build();
}

Example 32 with Expr

use of com.google.api.generator.engine.ast.Expr in project gapic-generator-java by googleapis.

the class ResourceNameHelperClassComposer method createToStringListMethod.

private static MethodDefinition createToStringListMethod(TypeNode thisClassType) {
    TypeNode listClassType = TypeNode.withReference(ConcreteReference.builder().setClazz(List.class).setGenerics(Arrays.asList(thisClassType.reference())).build());
    VariableExpr valuesVarExpr = VariableExpr.withVariable(Variable.builder().setName("values").setType(listClassType).build());
    TypeNode listStringType = TypeNode.withReference(ConcreteReference.builder().setClazz(List.class).setGenerics(Arrays.asList(ConcreteReference.withClazz(String.class))).build());
    VariableExpr listVarExpr = VariableExpr.withVariable(Variable.builder().setName("list").setType(listStringType).build());
    AssignmentExpr listAssignExpr = AssignmentExpr.builder().setVariableExpr(listVarExpr.toBuilder().setIsDecl(true).build()).setValueExpr(NewObjectExpr.builder().setType(TypeNode.withReference(ConcreteReference.withClazz(ArrayList.class))).setIsGeneric(true).setArguments(Arrays.asList(MethodInvocationExpr.builder().setExprReferenceExpr(valuesVarExpr).setMethodName("size").build())).build()).build();
    VariableExpr valueVarExpr = VariableExpr.withVariable(Variable.builder().setName("value").setType(thisClassType).build());
    // We use an equality check instead of Objects.isNull() for Java 7 compatibility.
    Expr isNullCheck = RelationalOperationExpr.equalToWithExprs(valueVarExpr, ValueExpr.createNullExpr());
    Statement listAddEmptyStringStatement = ExprStatement.withExpr(MethodInvocationExpr.builder().setExprReferenceExpr(listVarExpr).setMethodName("add").setArguments(Arrays.asList(ValueExpr.withValue(StringObjectValue.withValue("")))).build());
    Statement listAddValueStatement = ExprStatement.withExpr(MethodInvocationExpr.builder().setExprReferenceExpr(listVarExpr).setMethodName("add").setArguments(Arrays.asList(MethodInvocationExpr.builder().setExprReferenceExpr(valueVarExpr).setMethodName("toString").build())).build());
    IfStatement ifStatement = IfStatement.builder().setConditionExpr(isNullCheck).setBody(Arrays.asList(listAddEmptyStringStatement)).setElseBody(Arrays.asList(listAddValueStatement)).build();
    ForStatement forStatement = ForStatement.builder().setLocalVariableExpr(valueVarExpr.toBuilder().setIsDecl(true).build()).setCollectionExpr(valuesVarExpr).setBody(Arrays.asList(ifStatement)).build();
    return MethodDefinition.builder().setScope(ScopeNode.PUBLIC).setIsStatic(true).setReturnType(listStringType).setName("toStringList").setArguments(Arrays.asList(valuesVarExpr.toBuilder().setIsDecl(true).build())).setBody(Arrays.asList(ExprStatement.withExpr(listAssignExpr), forStatement)).setReturnExpr(listVarExpr).build();
}

Example 33 with Expr

use of com.google.api.generator.engine.ast.Expr in project gapic-generator-java by googleapis.

the class ResourceNameHelperClassComposer method createClassStatements.

private static List<Statement> createClassStatements(List<VariableExpr> templateFinalVarExprs, Map<String, VariableExpr> patternTokenVarExprs, List<String> patterns, List<List<String>> tokenHierarchies) {
    List<Expr> memberVars = new ArrayList<>();
    // "projects/{project}/locations/{location}/autoscalingPolicies/{autoscaling_policy}");
    for (int i = 0; i < patterns.size(); i++) {
        VariableExpr varExpr = templateFinalVarExprs.get(i).toBuilder().setIsDecl(true).setScope(ScopeNode.PRIVATE).setIsStatic(true).setIsFinal(true).build();
        String pattern = patterns.get(i);
        Expr valueExpr = MethodInvocationExpr.builder().setStaticReferenceType(FIXED_TYPESTORE.get("PathTemplate")).setMethodName("createWithoutUrlEncoding").setArguments(Arrays.asList(ValueExpr.withValue(StringObjectValue.withValue(pattern)))).setReturnType(FIXED_TYPESTORE.get("PathTemplate")).build();
        // PubSub special-case handling for _deleted-topic_.
        if (pattern.equals(ResourceNameConstants.DELETED_TOPIC_LITERAL)) {
            valueExpr = ValueExpr.withValue(StringObjectValue.withValue(pattern));
        }
        memberVars.add(AssignmentExpr.builder().setVariableExpr(varExpr).setValueExpr(valueExpr).build());
    }
    memberVars.add(FIXED_CLASS_VARS.get("fieldValuesMap").toBuilder().setIsDecl(true).setScope(ScopeNode.PRIVATE).setIsVolatile(true).build());
    boolean hasVariants = tokenHierarchies.size() > 1;
    if (hasVariants) {
        Function<VariableExpr, VariableExpr> toDeclFn = v -> v.toBuilder().setIsDecl(true).setScope(ScopeNode.PRIVATE).build();
        memberVars.add(toDeclFn.apply(FIXED_CLASS_VARS.get("pathTemplate")));
        memberVars.add(toDeclFn.apply(FIXED_CLASS_VARS.get("fixedValue")));
    }
    // Private per-token string variables.
    // Use the token set as a key to maintain ordering (for consistency).
    Function<VariableExpr, VariableExpr> toFinalDeclFn = v -> v.toBuilder().setIsDecl(true).setScope(ScopeNode.PRIVATE).setIsFinal(true).build();
    // Special-cased PubSub handling.
    List<List<String>> processedTokenHierarchies = tokenHierarchies.stream().filter(tokens -> !tokens.contains(ResourceNameConstants.DELETED_TOPIC_LITERAL)).collect(Collectors.toList());
    memberVars.addAll(getTokenSet(processedTokenHierarchies).stream().map(t -> toFinalDeclFn.apply(patternTokenVarExprs.get(t))).collect(Collectors.toList()));
    return memberVars.stream().map(e -> ExprStatement.withExpr(e)).collect(Collectors.toList());
}

Example 34 with Expr

use of com.google.api.generator.engine.ast.Expr in project gapic-generator-java by googleapis.

the class ResourceNameHelperClassComposer method createGetFieldValuesMapMethod.

private static MethodDefinition createGetFieldValuesMapMethod(ResourceName resourceName, TypeNode thisClassType, Map<String, VariableExpr> patternTokenVarExprs, List<List<String>> tokenHierarchies) {
    Reference strRef = TypeNode.STRING.reference();
    TypeNode mapBuilderType = TypeNode.withReference(ConcreteReference.builder().setClazz(ImmutableMap.Builder.class).setGenerics(Arrays.asList(strRef, strRef)).build());
    VariableExpr fieldMapBuilderVarExpr = VariableExpr.withVariable(Variable.builder().setName("fieldMapBuilder").setType(mapBuilderType).build());
    AssignmentExpr builderAssignExpr = AssignmentExpr.builder().setVariableExpr(fieldMapBuilderVarExpr.toBuilder().setIsDecl(true).build()).setValueExpr(MethodInvocationExpr.builder().setStaticReferenceType(FIXED_TYPESTORE.get("ImmutableMap")).setMethodName("builder").setReturnType(mapBuilderType).build()).build();
    // Special-cased PubSub handling.
    List<List<String>> processedTokenHierarchies = tokenHierarchies.stream().filter(tokens -> !tokens.contains(ResourceNameConstants.DELETED_TOPIC_LITERAL)).collect(Collectors.toList());
    // Innermost if-blocks.
    List<Statement> tokenIfStatements = new ArrayList<>();
    for (String token : getTokenSet(processedTokenHierarchies)) {
        VariableExpr tokenVarExpr = patternTokenVarExprs.get(token);
        Preconditions.checkNotNull(tokenVarExpr, String.format("No variable found for %s among %s", token, patternTokenVarExprs.keySet()));
        StringObjectValue tokenStrVal = StringObjectValue.withValue(token);
        MethodInvocationExpr putExpr = MethodInvocationExpr.builder().setExprReferenceExpr(fieldMapBuilderVarExpr).setMethodName("put").setArguments(ValueExpr.withValue(tokenStrVal), tokenVarExpr).build();
        Expr notNullCheckExpr = RelationalOperationExpr.notEqualToWithExprs(tokenVarExpr, ValueExpr.createNullExpr());
        tokenIfStatements.add(IfStatement.builder().setConditionExpr(notNullCheckExpr).setBody(Arrays.asList(ExprStatement.withExpr(putExpr))).build());
    }
    // Put the innermost if-statements and assignment expressions together.
    VariableExpr fieldValuesMapVarExpr = FIXED_CLASS_VARS.get("fieldValuesMap");
    AssignmentExpr fieldValuesMapAssignExpr = AssignmentExpr.builder().setVariableExpr(fieldValuesMapVarExpr).setValueExpr(MethodInvocationExpr.builder().setExprReferenceExpr(fieldMapBuilderVarExpr).setMethodName("build").setReturnType(fieldValuesMapVarExpr.type()).build()).build();
    List<Statement> middleIfBlockStatements = new ArrayList<>();
    middleIfBlockStatements.add(ExprStatement.withExpr(builderAssignExpr));
    middleIfBlockStatements.addAll(tokenIfStatements);
    middleIfBlockStatements.add(ExprStatement.withExpr(fieldValuesMapAssignExpr));
    // Middle if-block, i.e. `if (fieldValuesMap == null)`.
    Expr fieldValuesMapNullCheckExpr = RelationalOperationExpr.equalToWithExprs(fieldValuesMapVarExpr, ValueExpr.createNullExpr());
    IfStatement fieldValuesMapIfStatement = IfStatement.builder().setConditionExpr(fieldValuesMapNullCheckExpr).setBody(middleIfBlockStatements).build();
    // Outer if-block.
    IfStatement outerIfStatement = IfStatement.builder().setConditionExpr(fieldValuesMapNullCheckExpr).setBody(Arrays.asList(SynchronizedStatement.builder().setLock(ThisObjectValue.withType(thisClassType)).setBody(Arrays.asList(fieldValuesMapIfStatement)).build())).build();
    // Put the method together.
    TypeNode mapStringType = fieldValuesMapVarExpr.type();
    return MethodDefinition.builder().setIsOverride(true).setScope(ScopeNode.PUBLIC).setReturnType(mapStringType).setName("getFieldValuesMap").setBody(Arrays.asList(outerIfStatement)).setReturnExpr(fieldValuesMapVarExpr).build();
}

Example 35 with Expr

use of com.google.api.generator.engine.ast.Expr in project gapic-generator-java by googleapis.

the class ResourceNameHelperClassComposer method createEqualsMethod.

private static MethodDefinition createEqualsMethod(ResourceName resourceName, List<List<String>> tokenHierarchies, TypeStore typeStore) {
    // Create method definition variables.
    Variable oVariable = Variable.builder().setType(TypeNode.withReference(javaObjectReference)).setName("o").build();
    VariableExpr argVarExpr = VariableExpr.builder().setIsDecl(false).setVariable(oVariable).build();
    TypeNode thisClassType = typeStore.get(getThisClassName(resourceName));
    ValueExpr thisValueExpr = ValueExpr.withValue(ThisObjectValue.withType(thisClassType));
    ValueExpr trueValueExpr = ValueExpr.withValue(PrimitiveValue.builder().setType(TypeNode.BOOLEAN).setValue("true").build());
    // Create first if statement's return expression
    ReturnExpr returnTrueExpr = ReturnExpr.withExpr(trueValueExpr);
    // Create second if statement's condition expression
    RelationalOperationExpr oEqualsThisExpr = RelationalOperationExpr.equalToWithExprs(argVarExpr, thisValueExpr);
    RelationalOperationExpr oNotEqualsNullExpr = RelationalOperationExpr.notEqualToWithExprs(argVarExpr, ValueExpr.createNullExpr());
    MethodInvocationExpr getClassMethodInvocationExpr = MethodInvocationExpr.builder().setMethodName("getClass").build();
    RelationalOperationExpr getClassEqualsExpr = RelationalOperationExpr.equalToWithExprs(getClassMethodInvocationExpr, getClassMethodInvocationExpr.toBuilder().setExprReferenceExpr(argVarExpr).build());
    LogicalOperationExpr orLogicalExpr = LogicalOperationExpr.logicalOrWithExprs(oNotEqualsNullExpr, getClassEqualsExpr);
    // Create second if statement's body assignment expression.
    Variable thatVariable = Variable.builder().setName("that").setType(thisClassType).build();
    VariableExpr thatVariableExpr = VariableExpr.builder().setIsDecl(false).setVariable(thatVariable).build();
    CastExpr oCastExpr = CastExpr.builder().setExpr(argVarExpr).setType(thisClassType).build();
    AssignmentExpr thatAssignmentExpr = AssignmentExpr.builder().setVariableExpr(thatVariableExpr.toBuilder().setIsDecl(true).build()).setValueExpr(oCastExpr).build();
    // PubSub special-case handling - exclude _deleted-topic_.
    List<List<String>> processedTokenHierarchies = tokenHierarchies.stream().filter(ts -> !ts.contains(ResourceNameConstants.DELETED_TOPIC_LITERAL)).collect(Collectors.toList());
    // Create return expression in the second if statement's body.
    Set<String> tokenSet = getTokenSet(processedTokenHierarchies);
    Iterator<String> itToken = tokenSet.iterator();
    Expr curTokenExpr = createObjectsEqualsForTokenMethodExpr(thisValueExpr, thatVariableExpr, Variable.builder().setType(TypeNode.STRING).setName(JavaStyle.toLowerCamelCase(itToken.next())).build());
    while (itToken.hasNext()) {
        Expr nextTokenExpr = createObjectsEqualsForTokenMethodExpr(thisValueExpr, thatVariableExpr, Variable.builder().setType(TypeNode.STRING).setName(JavaStyle.toLowerCamelCase(itToken.next())).build());
        curTokenExpr = LogicalOperationExpr.logicalAndWithExprs(curTokenExpr, nextTokenExpr);
    }
    ReturnExpr secondIfReturnExpr = ReturnExpr.withExpr(curTokenExpr);
    // Code: if (o == this) { return true;}
    IfStatement firstIfStatement = IfStatement.builder().setConditionExpr(oEqualsThisExpr).setBody(Arrays.asList(ExprStatement.withExpr(returnTrueExpr))).build();
    // Code: if (o != null || getClass() == o.getClass()) { FoobarName that = ((FoobarName) o);
    // return ..}
    IfStatement secondIfStatement = IfStatement.builder().setConditionExpr(orLogicalExpr).setBody(Arrays.asList(ExprStatement.withExpr(thatAssignmentExpr), ExprStatement.withExpr(secondIfReturnExpr))).build();
    // Create method's return expression.
    ValueExpr falseValueExpr = ValueExpr.withValue(PrimitiveValue.builder().setType(TypeNode.BOOLEAN).setValue("false").build());
    return MethodDefinition.builder().setIsOverride(true).setScope(ScopeNode.PUBLIC).setArguments(argVarExpr.toBuilder().setIsDecl(true).build()).setReturnType(TypeNode.BOOLEAN).setName("equals").setReturnExpr(falseValueExpr).setBody(Arrays.asList(firstIfStatement, secondIfStatement)).build();
}