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Fix error reporting when parsing genrule cmd

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Report errors inside the android.Expand lambda and don't return an
error so that processing can continue and multiple errors can be
reported.  Check for errors (for example incorrect syntax of variables)
immediately after Expand returns.  Avoids a misleading error message:
specified depfile=true but did not include a reference to '${depfile}' in cmd

Bug: 111219250
Test: m checkbuild
Change-Id: Id9a16c1609f5fd9345bfa1a2191261cff72fd382
This commit is contained in:
Colin Cross
2018-07-09 09:45:06 -07:00
parent 17ef5635fa
commit 85a2e89a14
1 changed files with 16 additions and 11 deletions
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27
genrule/genrule.go
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@@ -223,13 +223,18 @@ func (g *Module) GenerateAndroidBuildActions(ctx android.ModuleContext) {
task := g.taskGenerator(ctx, String(g.properties.Cmd), srcFiles)
rawCommand, err := android.Expand(task.cmd, func(name string) (string, error) {
// report the error directly without returning an error to android.Expand to catch multiple errors in a
// single run
reportError := func(fmt string, args ...interface{}) (string, error) {
ctx.PropertyErrorf("cmd", fmt, args...)
return "SOONG_ERROR", nil
}
switch name {
case "location":
if len(g.properties.Tools) == 0 && len(toolFiles) == 0 {
return "", fmt.Errorf("at least one `tools` or `tool_files` is required if $(location) is used")
}
if len(g.properties.Tools) > 0 {
return reportError("at least one `tools` or `tool_files` is required if $(location) is used")
} else if len(g.properties.Tools) > 0 {
return tools[g.properties.Tools[0]].String(), nil
} else {
return tools[toolFiles[0].Rel()].String(), nil
@@ -241,7 +246,7 @@ func (g *Module) GenerateAndroidBuildActions(ctx android.ModuleContext) {
case "depfile":
referencedDepfile = true
if !Bool(g.properties.Depfile) {
return "", fmt.Errorf("$(depfile) used without depfile property")
return reportError("$(depfile) used without depfile property")
}
return "__SBOX_DEPFILE__", nil
case "genDir":
@@ -252,22 +257,22 @@ func (g *Module) GenerateAndroidBuildActions(ctx android.ModuleContext) {
if tool, ok := tools[label]; ok {
return tool.String(), nil
} else {
return "", fmt.Errorf("unknown location label %q", label)
return reportError("unknown location label %q", label)
}
}
return "", fmt.Errorf("unknown variable '$(%s)'", name)
return reportError("unknown variable '$(%s)'", name)
}
})
if Bool(g.properties.Depfile) && !referencedDepfile {
ctx.PropertyErrorf("cmd", "specified depfile=true but did not include a reference to '${depfile}' in cmd")
}
if err != nil {
ctx.PropertyErrorf("cmd", "%s", err.Error())
return
}
if Bool(g.properties.Depfile) && !referencedDepfile {
ctx.PropertyErrorf("cmd", "specified depfile=true but did not include a reference to '${depfile}' in cmd")
}
// tell the sbox command which directory to use as its sandbox root
buildDir := android.PathForOutput(ctx).String()
sandboxPath := shared.TempDirForOutDir(buildDir)