eclipse-xtext / eclipse-xtext/xtext
Compile error inside lambda expression
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- Dominant language
- Java
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- 831
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- Merged PRs (30d)
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Description
The Xtend converter converts the following valid Java code
@Test
public void conditionTest() {
assertThat(new ArrayList<BigDecimal>()).are(new Condition<>(decimal -> decimal.scale() == 1, "")).isEmpty();
}
}
to the following Xtend code
@Test def void conditionTest() {
assertThat(new ArrayList<BigDecimal>()).are(new Condition([decimal|decimal.scale() === 1], "")).isEmpty()
}
which shows a compile error at the call to scale().
Eclipse IDE Version: Oxygen Release (4.7.0) Build id: 20170620-1800
Xtend IDE: 2.12.0.v20170519-1412
OS: Arch Linux
OpenJDK Runtime Environment (build 1.8.0_144-b01)
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with the Java and Xtend snippets in the issue and trace the Xtend conversion of the lambda passed to Condition. Reproduce the compile error in the stated Eclipse/Xtend environment, then verify that the converted code can call scale() and compiles successfully.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- java
- Domain
- compilers
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100