Move/dedupe some host path functions in package_ctx.go.

These functions don't need a PackageContext object.

Test: m
Bug: 145934348
Change-Id: Ia1da2c76cbad292f9ca79617199b2b5b6b265568
diff --git a/android/config.go b/android/config.go
index 1e5a24d..271a54a 100644
--- a/android/config.go
+++ b/android/config.go
@@ -418,6 +418,18 @@
 	return PathForOutput(ctx, "host", c.PrebuiltOS(), "bin", tool)
 }
 
+func (c *config) HostJNIToolPath(ctx PathContext, path string) Path {
+	ext := ".so"
+	if runtime.GOOS == "darwin" {
+		ext = ".dylib"
+	}
+	return PathForOutput(ctx, "host", c.PrebuiltOS(), "lib64", path+ext)
+}
+
+func (c *config) HostJavaToolPath(ctx PathContext, path string) Path {
+	return PathForOutput(ctx, "host", c.PrebuiltOS(), "framework", path)
+}
+
 // HostSystemTool looks for non-hermetic tools from the system we're running on.
 // Generally shouldn't be used, but useful to find the XCode SDK, etc.
 func (c *config) HostSystemTool(name string) string {
diff --git a/android/package_ctx.go b/android/package_ctx.go
index cf8face..d3527fa 100644
--- a/android/package_ctx.go
+++ b/android/package_ctx.go
@@ -16,7 +16,6 @@
 
 import (
 	"fmt"
-	"runtime"
 	"strings"
 
 	"github.com/google/blueprint"
@@ -177,46 +176,30 @@
 // package-scoped variable's initialization.
 func (p PackageContext) HostBinToolVariable(name, path string) blueprint.Variable {
 	return p.VariableFunc(name, func(ctx PackageVarContext) string {
-		return p.HostBinToolPath(ctx, path).String()
+		return ctx.Config().HostToolPath(ctx, path).String()
 	})
 }
 
-func (p PackageContext) HostBinToolPath(ctx PackageVarContext, path string) Path {
-	return PathForOutput(ctx, "host", ctx.Config().PrebuiltOS(), "bin", path)
-}
-
 // HostJNIToolVariable returns a Variable whose value is the path to a host tool
 // in the lib directory for host targets. It may only be called during a Go
 // package's initialization - either from the init() function or as part of a
 // package-scoped variable's initialization.
 func (p PackageContext) HostJNIToolVariable(name, path string) blueprint.Variable {
 	return p.VariableFunc(name, func(ctx PackageVarContext) string {
-		return p.HostJNIToolPath(ctx, path).String()
+		return ctx.Config().HostJNIToolPath(ctx, path).String()
 	})
 }
 
-func (p PackageContext) HostJNIToolPath(ctx PackageVarContext, path string) Path {
-	ext := ".so"
-	if runtime.GOOS == "darwin" {
-		ext = ".dylib"
-	}
-	return PathForOutput(ctx, "host", ctx.Config().PrebuiltOS(), "lib64", path+ext)
-}
-
 // HostJavaToolVariable returns a Variable whose value is the path to a host
 // tool in the frameworks directory for host targets. It may only be called
 // during a Go package's initialization - either from the init() function or as
 // part of a package-scoped variable's initialization.
 func (p PackageContext) HostJavaToolVariable(name, path string) blueprint.Variable {
 	return p.VariableFunc(name, func(ctx PackageVarContext) string {
-		return p.HostJavaToolPath(ctx, path).String()
+		return ctx.Config().HostJavaToolPath(ctx, path).String()
 	})
 }
 
-func (p PackageContext) HostJavaToolPath(ctx PackageVarContext, path string) Path {
-	return PathForOutput(ctx, "host", ctx.Config().PrebuiltOS(), "framework", path)
-}
-
 // IntermediatesPathVariable returns a Variable whose value is the intermediate
 // directory appended with the supplied path. It may only be called during a Go
 // package's initialization - either from the init() function or as part of a
diff --git a/apex/builder.go b/apex/builder.go
index f199bd4..db57a9c 100644
--- a/apex/builder.go
+++ b/apex/builder.go
@@ -43,7 +43,7 @@
 			if !ctx.Config().FrameworksBaseDirExists(ctx) {
 				return filepath.Join(prebuiltDir, runtime.GOOS, "bin", tool)
 			} else {
-				return pctx.HostBinToolPath(ctx, tool).String()
+				return ctx.Config().HostToolPath(ctx, tool).String()
 			}
 		})
 	}
diff --git a/cc/rs.go b/cc/rs.go
index 61fd1a8..9149e17 100644
--- a/cc/rs.go
+++ b/cc/rs.go
@@ -29,7 +29,7 @@
 			// Use RenderScript prebuilts for unbundled builds but not PDK builds
 			return filepath.Join("prebuilts/sdk/tools", runtime.GOOS, "bin/llvm-rs-cc")
 		} else {
-			return pctx.HostBinToolPath(ctx, "llvm-rs-cc").String()
+			return ctx.Config().HostToolPath(ctx, "llvm-rs-cc").String()
 		}
 	})
 }
diff --git a/java/config/config.go b/java/config/config.go
index 333de32..fee6341 100644
--- a/java/config/config.go
+++ b/java/config/config.go
@@ -124,7 +124,7 @@
 		if ctx.Config().UnbundledBuild() {
 			return "prebuilts/build-tools/common/framework/" + turbine
 		} else {
-			return pctx.HostJavaToolPath(ctx, turbine).String()
+			return ctx.Config().HostJavaToolPath(ctx, turbine).String()
 		}
 	})
 
@@ -170,7 +170,7 @@
 		if ctx.Config().UnbundledBuild() || ctx.Config().IsPdkBuild() {
 			return filepath.Join("prebuilts/sdk/tools", runtime.GOOS, "bin", tool)
 		} else {
-			return pctx.HostBinToolPath(ctx, tool).String()
+			return ctx.Config().HostToolPath(ctx, tool).String()
 		}
 	})
 }
@@ -180,7 +180,7 @@
 		if ctx.Config().UnbundledBuild() || ctx.Config().IsPdkBuild() {
 			return filepath.Join("prebuilts/sdk/tools/lib", tool+".jar")
 		} else {
-			return pctx.HostJavaToolPath(ctx, tool+".jar").String()
+			return ctx.Config().HostJavaToolPath(ctx, tool+".jar").String()
 		}
 	})
 }
@@ -194,7 +194,7 @@
 			}
 			return filepath.Join("prebuilts/sdk/tools", runtime.GOOS, "lib64", tool+ext)
 		} else {
-			return pctx.HostJNIToolPath(ctx, tool).String()
+			return ctx.Config().HostJNIToolPath(ctx, tool).String()
 		}
 	})
 }
@@ -204,7 +204,7 @@
 		if ctx.Config().UnbundledBuild() || ctx.Config().IsPdkBuild() {
 			return filepath.Join("prebuilts/build-tools", ctx.Config().PrebuiltOS(), "bin", tool)
 		} else {
-			return pctx.HostBinToolPath(ctx, tool).String()
+			return ctx.Config().HostToolPath(ctx, tool).String()
 		}
 	})
 }
diff --git a/java/hiddenapi_singleton.go b/java/hiddenapi_singleton.go
index c0ef444..ad84cde 100644
--- a/java/hiddenapi_singleton.go
+++ b/java/hiddenapi_singleton.go
@@ -190,7 +190,7 @@
 	rule.MissingDeps(missingDeps)
 
 	rule.Command().
-		Tool(pctx.HostBinToolPath(ctx, "hiddenapi")).
+		Tool(ctx.Config().HostToolPath(ctx, "hiddenapi")).
 		Text("list").
 		FlagForEachInput("--boot-dex=", bootDexJars).
 		FlagWithInputList("--public-stub-classpath=", publicStubPaths, ":").