|
| 1 | +ClosureJsSrcsInfo = provider(fields = ["files"]) |
| 2 | + |
| 3 | +def _closure_js_srcs_aspect_impl(target, ctx): |
| 4 | + """Aspect to collect transitive .js source files from closure_js_library targets.""" |
| 5 | + direct = [] |
| 6 | + if ctx.rule.kind == "closure_js_library" and hasattr(ctx.rule.attr, "srcs"): |
| 7 | + for s in ctx.rule.attr.srcs: |
| 8 | + for f in s.files.to_list(): |
| 9 | + # Only include .js files from the main workspace, not external repos |
| 10 | + if f.extension == "js" and not f.owner.workspace_name: |
| 11 | + direct.append(f) |
| 12 | + |
| 13 | + trans = [] |
| 14 | + for d in getattr(ctx.rule.attr, "deps", []): |
| 15 | + if ClosureJsSrcsInfo in d: |
| 16 | + trans.append(d[ClosureJsSrcsInfo].files) |
| 17 | + |
| 18 | + return [ClosureJsSrcsInfo(files = depset(direct = direct, transitive = trans))] |
| 19 | + |
| 20 | +closure_js_srcs_aspect = aspect( |
| 21 | + implementation = _closure_js_srcs_aspect_impl, |
| 22 | + attr_aspects = ["deps"], |
| 23 | +) |
| 24 | + |
| 25 | +def _collect_srcs_impl(ctx): |
| 26 | + """Rule to collect all transitive JS sources from closure_js_library deps.""" |
| 27 | + trans = [] |
| 28 | + for d in ctx.attr.deps: |
| 29 | + if ClosureJsSrcsInfo in d: |
| 30 | + trans.append(d[ClosureJsSrcsInfo].files) |
| 31 | + all_files = depset(transitive = trans) |
| 32 | + return [ |
| 33 | + DefaultInfo(files = all_files), |
| 34 | + ClosureJsSrcsInfo(files = all_files), |
| 35 | + ] |
| 36 | + |
| 37 | +collect_closure_js_srcs = rule( |
| 38 | + implementation = _collect_srcs_impl, |
| 39 | + attrs = { |
| 40 | + "deps": attr.label_list(aspects = [closure_js_srcs_aspect]), |
| 41 | + }, |
| 42 | + provides = [ClosureJsSrcsInfo], |
| 43 | +) |
| 44 | + |
| 45 | +def _closure_js_deps_wrapper_impl(ctx): |
| 46 | + """Wrapper rule that adds runfiles to the generated deps.js file.""" |
| 47 | + deps_file = ctx.file.deps_file |
| 48 | + srcs_depset = ctx.attr.srcs_collector[ClosureJsSrcsInfo].files |
| 49 | + |
| 50 | + return [ |
| 51 | + DefaultInfo( |
| 52 | + files = depset([deps_file]), |
| 53 | + runfiles = ctx.runfiles( |
| 54 | + files = [deps_file], |
| 55 | + transitive_files = srcs_depset, |
| 56 | + ), |
| 57 | + ), |
| 58 | + ] |
| 59 | + |
| 60 | +_closure_js_deps_wrapper = rule( |
| 61 | + implementation = _closure_js_deps_wrapper_impl, |
| 62 | + attrs = { |
| 63 | + "deps_file": attr.label(allow_single_file = True, mandatory = True), |
| 64 | + "srcs_collector": attr.label(mandatory = True), |
| 65 | + }, |
| 66 | +) |
| 67 | + |
| 68 | +def closure_js_deps(name, deps = [], testonly = None, **kwargs): |
| 69 | + """Generate a deps.js file from closure_js_library dependencies. |
| 70 | +
|
| 71 | + This macro replaces the old closure_js_deps rule from rules_closure by using |
| 72 | + the closure-make-deps binary from the google-closure-deps npm package. |
| 73 | +
|
| 74 | + Args: |
| 75 | + name: Name of the target. The output will be 'deps.js'. |
| 76 | + deps: List of closure_js_library targets to analyze for dependencies. |
| 77 | + """ |
| 78 | + |
| 79 | + srcs_collector = name + "_closure_srcs" |
| 80 | + collect_closure_js_srcs( |
| 81 | + name = srcs_collector, |
| 82 | + deps = deps, |
| 83 | + testonly = testonly, |
| 84 | + visibility = ["//visibility:private"], |
| 85 | + ) |
| 86 | + |
| 87 | + deps_genrule = name + "_genrule" |
| 88 | + native.genrule( |
| 89 | + name = deps_genrule, |
| 90 | + srcs = [":" + srcs_collector], |
| 91 | + outs = ["deps.js"], |
| 92 | + cmd = """ |
| 93 | + export BAZEL_BINDIR=$(BINDIR) && \\ |
| 94 | + ln -sf . _main && \\ |
| 95 | + FILES="" && \\ |
| 96 | + for f in $(SRCS); do \\ |
| 97 | + FILES="$$FILES --file $$(pwd)/_main/$$f"; \\ |
| 98 | + done && \\ |
| 99 | + $(location //javascript/private:closure_make_deps) \\ |
| 100 | + --closure-path $$(pwd)/external/com_google_javascript_closure_library/closure \\ |
| 101 | + --no-validate \\ |
| 102 | + $$FILES \\ |
| 103 | + > $@ |
| 104 | + """, |
| 105 | + tools = ["//javascript/private:closure_make_deps"], |
| 106 | + testonly = testonly, |
| 107 | + visibility = ["//visibility:private"], |
| 108 | + ) |
| 109 | + |
| 110 | + # Use the wrapper rule to add runfiles to the generated deps.js |
| 111 | + _closure_js_deps_wrapper( |
| 112 | + name = name, |
| 113 | + deps_file = deps_genrule, |
| 114 | + srcs_collector = ":" + srcs_collector, |
| 115 | + testonly = testonly, |
| 116 | + **kwargs |
| 117 | + ) |
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