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feat: SampleComposer, Sample, Region Tag (pt1) (#933)
* feat: SampleComposer, Sample, Region Tag * chore: update sample formatter name * refactor: writing * refactor: include sync/async region tag attribute * refactor: naming updates * refactor: update naming - tests * chore: update formatter regex Security Hotspot * chore: update regex be more explicit
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src/main/java/com/google/api/generator/gapic/composer/samplecode/SampleComposer.java
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| // Copyright 2022 Google LLC | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package com.google.api.generator.gapic.composer.samplecode; | ||
|
|
||
| import com.google.api.generator.engine.ast.AssignmentExpr; | ||
| import com.google.api.generator.engine.ast.ClassDefinition; | ||
| import com.google.api.generator.engine.ast.CommentStatement; | ||
| import com.google.api.generator.engine.ast.Expr; | ||
| import com.google.api.generator.engine.ast.ExprStatement; | ||
| import com.google.api.generator.engine.ast.MethodDefinition; | ||
| import com.google.api.generator.engine.ast.MethodInvocationExpr; | ||
| import com.google.api.generator.engine.ast.ScopeNode; | ||
| import com.google.api.generator.engine.ast.Statement; | ||
| import com.google.api.generator.engine.ast.TypeNode; | ||
| import com.google.api.generator.engine.ast.Variable; | ||
| import com.google.api.generator.engine.ast.VariableExpr; | ||
| import com.google.api.generator.gapic.composer.comment.CommentComposer; | ||
| import com.google.api.generator.gapic.model.RegionTag; | ||
| import com.google.api.generator.gapic.model.Sample; | ||
| import com.google.api.generator.gapic.utils.JavaStyle; | ||
| import com.google.common.collect.ImmutableList; | ||
| import java.util.ArrayList; | ||
| import java.util.Arrays; | ||
| import java.util.List; | ||
| import java.util.stream.Collectors; | ||
|
|
||
| public class SampleComposer { | ||
| static List<Statement> composeInlineSample(List<Statement> sampleBody) { | ||
| return bodyWithComment(CommentComposer.AUTO_GENERATED_SAMPLE_COMMENT, sampleBody); | ||
| } | ||
|
|
||
| // "Executable" meaning it includes the necessary code to execute java code, | ||
| // still may require additional configuration to actually execute generated sample code | ||
| static ClassDefinition composeExecutableSample(Sample sample, String pakkage) { | ||
| return createExecutableSample( | ||
| sample.fileHeader(), | ||
| pakkage, | ||
| sample.name(), | ||
| sample.variableAssignments(), | ||
| bodyWithComment(CommentComposer.AUTO_GENERATED_SAMPLE_COMMENT, sample.body()), | ||
| sample.regionTag()); | ||
| } | ||
|
|
||
| private static List<Statement> bodyWithComment( | ||
| List<Statement> autoGeneratedComment, List<Statement> sampleBody) { | ||
| List<Statement> bodyWithComment = new ArrayList<>(autoGeneratedComment); | ||
| bodyWithComment.addAll(sampleBody); | ||
| return bodyWithComment; | ||
| } | ||
|
|
||
| private static ClassDefinition createExecutableSample( | ||
| List<CommentStatement> fileHeader, | ||
| String packageName, | ||
| String sampleClassName, | ||
| List<AssignmentExpr> sampleVariableAssignments, | ||
| List<Statement> sampleBody, | ||
| RegionTag regionTag) { | ||
|
|
||
| String sampleMethodName = JavaStyle.toLowerCamelCase(sampleClassName); | ||
| List<VariableExpr> sampleMethodArgs = composeSampleMethodArgs(sampleVariableAssignments); | ||
| MethodDefinition mainMethod = | ||
| composeMainMethod( | ||
| composeMainBody( | ||
| sampleVariableAssignments, | ||
| composeInvokeMethodStatement(sampleMethodName, sampleMethodArgs))); | ||
| MethodDefinition sampleMethod = | ||
| composeSampleMethod(sampleMethodName, sampleMethodArgs, sampleBody); | ||
| return composeSampleClass( | ||
| fileHeader, packageName, sampleClassName, mainMethod, sampleMethod, regionTag); | ||
| } | ||
|
|
||
| private static List<VariableExpr> composeSampleMethodArgs( | ||
| List<AssignmentExpr> sampleVariableAssignments) { | ||
| return sampleVariableAssignments.stream() | ||
| .map(v -> v.variableExpr().toBuilder().setIsDecl(true).build()) | ||
| .collect(Collectors.toList()); | ||
| } | ||
|
|
||
| private static Statement composeInvokeMethodStatement( | ||
| String sampleMethodName, List<VariableExpr> sampleMethodArgs) { | ||
| List<Expr> invokeArgs = | ||
| sampleMethodArgs.stream() | ||
| .map(arg -> arg.toBuilder().setIsDecl(false).build()) | ||
| .collect(Collectors.toList()); | ||
| return ExprStatement.withExpr( | ||
| MethodInvocationExpr.builder() | ||
| .setMethodName(sampleMethodName) | ||
| .setArguments(invokeArgs) | ||
| .build()); | ||
| } | ||
|
|
||
| private static List<Statement> composeMainBody( | ||
| List<AssignmentExpr> sampleVariableAssignments, Statement invokeMethod) { | ||
| List<ExprStatement> setVariables = | ||
| sampleVariableAssignments.stream() | ||
| .map(var -> ExprStatement.withExpr(var)) | ||
| .collect(Collectors.toList()); | ||
| List<Statement> body = new ArrayList<>(setVariables); | ||
| body.add(invokeMethod); | ||
| return body; | ||
| } | ||
|
|
||
| private static ClassDefinition composeSampleClass( | ||
| List<CommentStatement> fileHeader, | ||
| String packageName, | ||
| String sampleClassName, | ||
| MethodDefinition mainMethod, | ||
| MethodDefinition sampleMethod, | ||
| RegionTag regionTag) { | ||
| return ClassDefinition.builder() | ||
| .setFileHeader(fileHeader) | ||
| .setRegionTag(regionTag) | ||
| .setScope(ScopeNode.PUBLIC) | ||
| .setPackageString(packageName) | ||
| .setName(sampleClassName) | ||
| .setMethods(ImmutableList.of(mainMethod, sampleMethod)) | ||
| .build(); | ||
| } | ||
|
|
||
| private static MethodDefinition composeMainMethod(List<Statement> mainBody) { | ||
| return MethodDefinition.builder() | ||
| .setScope(ScopeNode.PUBLIC) | ||
| .setIsStatic(true) | ||
| .setReturnType(TypeNode.VOID) | ||
| .setName("main") | ||
| .setArguments( | ||
| VariableExpr.builder() | ||
| .setVariable( | ||
| Variable.builder().setType(TypeNode.STRING_ARRAY).setName("args").build()) | ||
| .setIsDecl(true) | ||
| .build()) | ||
| .setThrowsExceptions(Arrays.asList(TypeNode.withExceptionClazz(Exception.class))) | ||
| .setBody(mainBody) | ||
| .build(); | ||
| } | ||
|
|
||
| private static MethodDefinition composeSampleMethod( | ||
| String sampleMethodName, | ||
| List<VariableExpr> sampleMethodArgs, | ||
| List<Statement> sampleMethodBody) { | ||
| return MethodDefinition.builder() | ||
| .setScope(ScopeNode.PUBLIC) | ||
| .setIsStatic(true) | ||
| .setReturnType(TypeNode.VOID) | ||
| .setName(sampleMethodName) | ||
| .setArguments(sampleMethodArgs) | ||
| .setThrowsExceptions(Arrays.asList(TypeNode.withExceptionClazz(Exception.class))) | ||
| .setBody(sampleMethodBody) | ||
| .build(); | ||
| } | ||
| } |
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