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96 changes: 96 additions & 0 deletions
96
idea-plugin/src/main/kotlin/com/itangcent/idea/plugin/api/export/feign/FeignTemplate.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,96 @@ | ||
| package com.itangcent.idea.plugin.api.export.feign | ||
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| object FeignTemplate { | ||
|
|
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| /** | ||
| * Parse variables from a template fragment. | ||
| * | ||
| * @param fragment to parse | ||
| * @return variables | ||
| */ | ||
| fun parseVariables(fragment: String): List<String> { | ||
| val variables = ArrayList<String>() | ||
| val tokenizer = ChunkTokenizer(fragment) | ||
| while (tokenizer.hasNext()) { | ||
| val chunk = tokenizer.next() | ||
| if (chunk.startsWith("{")) { | ||
| variables.add(chunk.removePrefix("{").removeSuffix("}")) | ||
| } | ||
| } | ||
| return variables | ||
| } | ||
| } | ||
|
|
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| /** | ||
| * Splits a Uri into Chunks that exists inside and outside of an expression, delimited by curly | ||
| * braces "{}". Nested expressions are treated as literals, for example "foo{bar{baz}}" will be | ||
| * treated as "foo, {bar{baz}}". Inspired by Apache CXF Jax-RS. | ||
| */ | ||
| private class ChunkTokenizer(template: String) { | ||
| private val tokens: MutableList<String> = ArrayList() | ||
| private var index = 0 | ||
| operator fun hasNext(): Boolean { | ||
| return tokens.size > index | ||
| } | ||
|
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| operator fun next(): String { | ||
| if (hasNext()) { | ||
| return tokens[index++] | ||
| } | ||
| throw IllegalStateException("No More Elements") | ||
| } | ||
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| init { | ||
| var outside = true | ||
| var level = 0 | ||
| var lastIndex = 0 | ||
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| /* loop through the template, character by character */ | ||
| var idx = 0 | ||
| while (idx < template.length) { | ||
| if (template[idx] == '{') { | ||
| /* start of an expression */ | ||
| if (outside) { | ||
| /* outside of an expression */ | ||
| if (lastIndex < idx) { | ||
| /* this is the start of a new token */ | ||
| tokens.add(template.substring(lastIndex, idx)) | ||
| } | ||
| lastIndex = idx | ||
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| /* | ||
| * no longer outside of an expression, additional characters will be treated as in an | ||
| * expression | ||
| */ | ||
| outside = false | ||
| } else { | ||
| /* nested braces, increase our nesting level */ | ||
| level++ | ||
| } | ||
| } else if (template[idx] == '}' && !outside) { | ||
| /* the end of an expression */ | ||
| if (level > 0) { | ||
| /* | ||
| * sometimes we see nested expressions, we only want the outer most expression | ||
| * boundaries. | ||
| */ | ||
| level-- | ||
| } else { | ||
| /* outermost boundary */ | ||
| if (lastIndex < idx) { | ||
| /* this is the end of an expression token */ | ||
| tokens.add(template.substring(lastIndex, idx + 1)) | ||
| } | ||
| lastIndex = idx + 1 | ||
|
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| /* outside an expression */outside = true | ||
| } | ||
| } | ||
| idx++ | ||
| } | ||
| if (lastIndex < idx) { | ||
| /* grab the remaining chunk */ | ||
| tokens.add(template.substring(lastIndex, idx)) | ||
| } | ||
| } | ||
| } |
64 changes: 64 additions & 0 deletions
64
...in/kotlin/com/itangcent/idea/plugin/api/export/feign/RequestLineRequestMappingResolver.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,64 @@ | ||
| package com.itangcent.idea.plugin.api.export.feign | ||
|
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| import com.google.inject.Inject | ||
| import com.google.inject.Singleton | ||
| import com.intellij.psi.PsiElement | ||
| import com.itangcent.idea.condition.annotation.ConditionOnClass | ||
| import com.itangcent.idea.plugin.api.export.spring.SpringRequestMappingResolver | ||
| import com.itangcent.idea.plugin.condition.ConditionOnSetting | ||
| import com.itangcent.intellij.jvm.AnnotationHelper | ||
| import com.itangcent.intellij.logger.Logger | ||
| import com.itangcent.intellij.psi.PsiClassUtils | ||
| import com.itangcent.order.Order | ||
| import com.itangcent.order.Ordered | ||
| import java.util.regex.Matcher | ||
| import java.util.regex.Pattern | ||
|
|
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| /** | ||
| * Support @RequestLine | ||
| */ | ||
| @Singleton | ||
| @Order(Ordered.HIGHEST_PRECEDENCE) | ||
| @ConditionOnClass(SpringFeignClassName.REQUEST_LINE_ANNOTATION) | ||
| @ConditionOnSetting("feignEnable") | ||
| class RequestLineRequestMappingResolver : SpringRequestMappingResolver { | ||
|
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| @Inject | ||
| private lateinit var logger: Logger | ||
|
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| @Inject | ||
| private lateinit var annotationHelper: AnnotationHelper | ||
|
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| /** | ||
| * see [https://github.com/OpenFeign/feign/blob/f685f76002370413965f8aafea0ea96843b3c806/core/src/main/java/feign/Contract.java#L253-L270] | ||
| * | ||
| * @param psiElement annotated element(PsiMethod/PsiClass) | ||
| * @return annotation attributes | ||
| */ | ||
| override fun resolveRequestMapping(psiElement: PsiElement): Map<String, Any?>? { | ||
| val requestLineValue = | ||
| annotationHelper.findAttrAsString(psiElement, SpringFeignClassName.REQUEST_LINE_ANNOTATION) ?: return null | ||
|
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| if (requestLineValue.isEmpty()) { | ||
| logger.error("RequestLine annotation was empty on method ${PsiClassUtils.fullNameOfMember(psiElement)}.") | ||
| return null | ||
| } | ||
| val requestLineMatcher: Matcher = REQUEST_LINE_PATTERN.matcher(requestLineValue) | ||
| if (!requestLineMatcher.find()) { | ||
| logger.error( | ||
| "RequestLine annotation didn't start with an HTTP verb on method ${ | ||
| PsiClassUtils.fullNameOfMember( | ||
| psiElement | ||
| ) | ||
| }" | ||
| ) | ||
| return null | ||
| } | ||
| return mapOf("method" to requestLineMatcher.group(1), | ||
| "value" to requestLineMatcher.group(2)) | ||
| } | ||
|
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| companion object { | ||
| val REQUEST_LINE_PATTERN = Pattern.compile("^([A-Z]+)[ ]*(.*)$")!! | ||
| } | ||
| } |
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