Adding Mojo configuration to set the token limit

Author: yholkamp

docs/codegen-options.md

@@ -68,6 +68,7 @@
 |                `supportUnknownFields`                 |                                Boolean                                 |                             False                              | Specifies whether api classes should support unknown fields during serialization or deserialization. If `true`, classes will include a property of type [`java.util.Map<String,Object>`](https://docs.oracle.com/javase/8/docs/api/index.html?java/util/Map.html) that will store unknown fields.                                                                              |
 |              `unknownFieldsPropertyName`              |                                 String                                 |                       userDefinedFields                        | Specifies the name of the property to be included in api classes to support unknown fields during serialization or deserialization                                                                                                                                                                                                                                             |
 |                        `skip`                         |                                Boolean                                 |                             False                              | If true, then code generation will not happen                                                                                                                                                                                                                                                                                                                                  |
+|                     `tokenLimit`                      |                                Integer                                 |                             15000                              | Specifies the maximum number of GraphQL grammar tokens to process.                                                                                                                                                                                                       
 
 
 ### Option `graphqlSchemas`

plugins/maven/graphql-java-codegen-maven-plugin/src/main/java/io/github/kobylynskyi/graphql/codegen/GraphQLCodegenMojo.java

@@ -16,6 +16,7 @@
 import com.kobylynskyi.graphql.codegen.supplier.MappingConfigSupplier;
 import com.kobylynskyi.graphql.codegen.supplier.MergeableMappingConfigSupplier;
 import com.kobylynskyi.graphql.codegen.supplier.SchemaFinder;
+import graphql.parser.ParserOptions;
 import org.apache.maven.model.Resource;
 import org.apache.maven.plugin.AbstractMojo;
 import org.apache.maven.plugin.MojoExecutionException;
@@ -248,6 +249,12 @@ public class GraphQLCodegenMojo extends AbstractMojo implements GraphQLCodegenCo
     @Parameter(defaultValue = "false")
     private boolean skip;
 
+    /**
+     * Maximum number of GraphQL grammar tokens to process.
+     */
+    @Parameter(defaultValue = "15000")
+    private int tokenLimit;
+
     @Override
     public void execute() throws MojoExecutionException {
         addCompileSourceRootIfConfigured();
@@ -338,6 +345,9 @@ private GraphQLCodegen instantiateCodegen(MappingConfig mappingConfig) throws IO
         GeneratedLanguage language = mappingConfigSupplier.map(Supplier::get)
                 .map(MappingConfig::getGeneratedLanguage)
                 .orElse(generatedLanguage);
+
+        ParserOptions.setDefaultParserOptions(ParserOptions.newParserOptions().maxTokens(tokenLimit).build());
+
         switch (language) {
             case JAVA:
                 return new JavaGraphQLCodegen(getSchemas(), graphqlQueryIntrospectionResultPath,