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Add genrules to Example project #19

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Merged
rockbruno merged 2 commits into from
Jul 17, 2025
Merged

Add genrules to Example project #19

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8530235
Add an example GenerateDummySwiftFile genrule
josh-arnold-1 Jul 13, 2025
1a7d609
Update HelloWorld to use 'expand_template_rule'
josh-arnold-1 Jul 13, 2025
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49 changes: 47 additions & 2 deletions Example/HelloWorld/BUILD
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Original file line number Diff line number Diff line change
@@ -1,5 +1,6 @@
load("@build_bazel_rules_apple//apple:ios.bzl", "ios_application", "ios_unit_test")
load("@build_bazel_rules_swift//swift:swift.bzl", "swift_library", "swift_interop_hint")
load("@aspect_bazel_lib//lib:expand_template.bzl", "expand_template_rule")


swift_library(
Expand Down Expand Up @@ -35,11 +36,38 @@ objc_library(
aspect_hints = [":TodoObjCSupport_hint"],
)

genrule(
name = "GenerateDummySwiftFile",
outs = [
"GeneratedDummy.swift",
],
cmd = """
cat > $@ << 'EOF'
// This is a generated Swift file
import Foundation

struct GeneratedDummy {
static let message = "Hello from generated Swift file!"

static func greet() -> String {
return message
}
}
EOF
""",
)

swift_library(
name = "GeneratedDummy",
module_name = "GeneratedDummy",
srcs = [":GenerateDummySwiftFile"],
)

swift_library(
name = "HelloWorldLib",
module_name = "HelloWorldLib",
srcs = glob(["HelloWorldLib/Sources/*.swift"]),
deps = [":TodoModels", ":TodoObjCSupport"],
deps = [":TodoModels", ":TodoObjCSupport", ":GeneratedDummy", ":ExpandedTemplate"],
)

genrule(
Expand All @@ -64,5 +92,22 @@ ios_application(
families = ["iphone", "ipad"],
infoplists = ["Resources/Info.plist"],
minimum_os_version = "17.0",
deps = [":HelloWorldLib"],
deps = [":HelloWorldLib", ":GeneratedDummy"],
)

expand_template_rule(
name = "ExpandTemplateSwiftFile",
template = "template.swift.tpl",
out = "ExpandedTemplate.swift",
substitutions = {
"{{CLASS_NAME}}": "ExpandedTemplate",
"{{MESSAGE}}": "Hello from expanded template!",
},
)

swift_library(
name = "ExpandedTemplate",
module_name = "ExpandedTemplate",
srcs = [":ExpandTemplateSwiftFile"],
)

10 changes: 10 additions & 0 deletions Example/HelloWorld/template.swift.tpl
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Original file line number Diff line number Diff line change
@@ -0,0 +1,10 @@
// This is a generated Swift file from template
import Foundation

struct {{CLASS_NAME}} {
static let message = "{{MESSAGE}}"

static func greet() -> String {
return message
}
}
2 changes: 2 additions & 0 deletions Example/MODULE.bazel
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Expand Up @@ -18,3 +18,5 @@ archive_override(


bazel_dep(name = "apple_support", version = "1.22.1", repo_name = "build_bazel_apple_support")

bazel_dep(name = "aspect_bazel_lib", version = "2.9.3")
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