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Xtext maven plugin language order [message #1802957]

Tue, 19 February 2019 11:12

Eclipse User

Hello,

I'm working on the development of a language (B) that depends on some information generated in runtime by another language (A). So I need the generation of language A to occur before the generation of language B. I have a project that uses the xtext-maven-plugin configured with the two languages:

<plugin>
	<groupId>org.eclipse.xtext</groupId>
	<artifactId>xtext-maven-plugin</artifactId>
	<version>2.10.0</version>
	<executions>
		<execution>
			<id>generate-dsl-sources</id>
			<phase>generate-sources</phase>
			<goals>
				<goal>generate</goal>
			</goals>
		</execution>
	</executions>
	<configuration>
		<languages>
			
			<!-- Language A -->
			<language>
				<setup>com.example.AStandaloneSetup</setup>
				<outputConfigurations>
					<outputConfiguration>
						<outputDirectory>src/main/generated-sources/xtend/</outputDirectory>
					</outputConfiguration>
				</outputConfigurations>
			</language>

			<!-- Language B -->
			<language>
				<setup>com.example.BStandaloneSetup</setup>
				<outputConfigurations>
					<outputConfiguration>
						<outputDirectory>src/main/generated-sources/xtend/</outputDirectory>
					</outputConfiguration>
				</outputConfigurations>
			</language>
			
		</languages>
	</configuration>
	<!-- dependencies... -->
</plugin>

But the generation of these languages by maven is performed in random order. Is there any way to ensure that the generation of language A is executed before the generation of language B?

Re: Xtext maven plugin language order [message #1850624 is a reply to message #1802957]

Thu, 10 March 2022 11:30

Eclipse User

PING! I need this too.

Re: Xtext maven plugin language order [message #1850627 is a reply to message #1850624]

Thu, 10 March 2022 13:51

Eclipse User

I assume you need to have a look at the code and or write your own version
but i fear the plugin reads all file at once.
so files generated by one dsl will never be read for the 2nd dsl
maybe you can configure the plugin twice

[Updated on: Thu, 10 March 2022 16:09] by Moderator

Re: Xtext maven plugin language order [message #1851139 is a reply to message #1802957]

Mon, 28 March 2022 14:12

Eclipse User

Hello,

You can do it as follows:

			<plugin>
				<groupId>org.codehaus.mojo</groupId>
				<artifactId>build-helper-maven-plugin</artifactId>
				<executions>
					<execution>
						<id>add-source-hello</id>
						<goals>
							<goal>add-source</goal>
						</goals>
						<phase>prepare-package</phase>
						<configuration>
							<sources>
								<source>${project.build.outputDirectory}/generated/xtext</source>
							</sources>
						</configuration>
					</execution>
				</executions>
			</plugin>
			<plugin>
				<groupId>org.eclipse.xtext</groupId>
				<artifactId>xtext-maven-plugin</artifactId>
				<executions>
					<execution>
						<id>generate-hello</id>
						<goals>
							<goal>generate</goal>
						</goals>
						<configuration>
							<sourceRoots>
								<sourceRoot>${project.basedir}/src/main/java</sourceRoot>
								<sourceRoot>${project.basedir}/src/test/java</sourceRoot>
							</sourceRoots>
							<languages>
								<language>
									<setup>com.idiomaticsoft.dsl.hellogenn.HelloGenStandaloneSetup</setup>
									<outputConfigurations>
										<outputConfiguration>
											<outputDirectory>${project.build.directory}/generated-sources/xtext/</outputDirectory>
										</outputConfiguration>
									</outputConfigurations>
								</language>
							</languages>
						</configuration>
					</execution>
					<execution>
						<id>generate-txt</id>
						<goals>
							<goal>generate</goal>
						</goals>
						<phase>prepare-package</phase>
						<configuration>
							<languages>
								<language>
									<setup>com.idiomaticsoft.dsl.hello.HelloStandaloneSetup</setup>
									<outputConfigurations>
										<outputConfiguration>
											<outputDirectory>${project.build.directory}/generated-sources/xtext</outputDirectory>
										</outputConfiguration>
									</outputConfigurations>
								</language>
							</languages>
						</configuration>
					</execution>
				</executions>
					<dependencies>
						<dependency>
							<groupId>com.idiomaticsoft.dsl.hello</groupId>
							<artifactId>com.idiomaticsoft.dsl.hello</artifactId>
							<version>1.0.0-SNAPSHOT</version>
						</dependency>
						<dependency>
							<groupId>com.idiomaticsoft.dsl.hellogenn</groupId>
							<artifactId>com.idiomaticsoft.dsl.hellogenn</artifactId>
							<version>1.0.0-SNAPSHOT</version>
						</dependency>
					</dependencies>
			</plugin>

In the example. The com.idiomaticsoft.dsl.hellogenn.HelloGenStandaloneSetup is executed first and then the com.idiomaticsoft.dsl.hello.HelloStandaloneSetup language.

I wrote a blog post about it at: https://idiomaticsoft.com/post/2022-03-28-have-dsl-as-input-for-another/ with the full explanation and a working project.

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