Remove more bp2build

Bug: 315353489
Test: m blueprint_tests
Change-Id: Ib854fe1a448c258fe086691a6e5ed2d98537f5e4

1 files changed, 0 insertions, 360 deletions

diff --git a/android/config_bp2build.go b/android/config_bp2build.go
index b632e3302..4c2fb5e4a 100644
--- a/android/config_bp2build.go
+++ b/android/config_bp2build.go
@@ -15,24 +15,11 @@
 package android
 
 import (
-	"fmt"
-	"reflect"
-	"regexp"
-	"sort"
 	"strings"
 
-	"android/soong/bazel"
-	"android/soong/starlark_fmt"
-
 	"github.com/google/blueprint"
 )
 
-// BazelVarExporter is a collection of configuration variables that can be exported for use in Bazel rules
-type BazelVarExporter interface {
-	// asBazel expands strings of configuration variables into their concrete values
-	asBazel(Config, ExportedStringVariables, ExportedStringListVariables, ExportedConfigDependingVariables) []bazelConstant
-}
-
 // ExportedVariables is a collection of interdependent configuration variables
 type ExportedVariables struct {
 	// Maps containing toolchain variables that are independent of the
@@ -61,18 +48,6 @@ func NewExportedVariables(pctx PackageContext) ExportedVariables {
 	}
 }
 
-func (ev ExportedVariables) asBazel(config Config,
-	stringVars ExportedStringVariables, stringListVars ExportedStringListVariables, cfgDepVars ExportedConfigDependingVariables) []bazelConstant {
-	ret := []bazelConstant{}
-	ret = append(ret, ev.exportedStringVars.asBazel(config, stringVars, stringListVars, cfgDepVars)...)
-	ret = append(ret, ev.exportedStringListVars.asBazel(config, stringVars, stringListVars, cfgDepVars)...)
-	ret = append(ret, ev.exportedStringListDictVars.asBazel(config, stringVars, stringListVars, cfgDepVars)...)
-	// Note: ExportedVariableReferenceDictVars collections can only contain references to other variables and must be printed last
-	ret = append(ret, ev.exportedVariableReferenceDictVars.asBazel(config, stringVars, stringListVars, cfgDepVars)...)
-	ret = append(ret, ev.exportedConfigDependingVars.asBazel(config, stringVars, stringListVars, cfgDepVars)...)
-	return ret
-}
-
 // ExportStringStaticVariable declares a static string variable and exports it to
 // Bazel's toolchain.
 func (ev ExportedVariables) ExportStringStaticVariable(name string, value string) {
@@ -142,49 +117,6 @@ func (m ExportedConfigDependingVariables) set(k string, v interface{}) {
 	m[k] = v
 }
 
-func (m ExportedConfigDependingVariables) asBazel(config Config,
-	stringVars ExportedStringVariables, stringListVars ExportedStringListVariables, cfgDepVars ExportedConfigDependingVariables) []bazelConstant {
-	ret := make([]bazelConstant, 0, len(m))
-	for variable, unevaluatedVar := range m {
-		evalFunc := reflect.ValueOf(unevaluatedVar)
-		validateVariableMethod(variable, evalFunc)
-		evaluatedResult := evalFunc.Call([]reflect.Value{reflect.ValueOf(config)})
-		evaluatedValue := evaluatedResult[0].Interface().(string)
-		expandedVars, err := expandVar(config, evaluatedValue, stringVars, stringListVars, cfgDepVars)
-		if err != nil {
-			panic(fmt.Errorf("error expanding config variable %s: %s", variable, err))
-		}
-		if len(expandedVars) > 1 {
-			ret = append(ret, bazelConstant{
-				variableName:       variable,
-				internalDefinition: starlark_fmt.PrintStringList(expandedVars, 0),
-			})
-		} else {
-			ret = append(ret, bazelConstant{
-				variableName:       variable,
-				internalDefinition: fmt.Sprintf(`"%s"`, validateCharacters(expandedVars[0])),
-			})
-		}
-	}
-	return ret
-}
-
-// Ensure that string s has no invalid characters to be generated into the bzl file.
-func validateCharacters(s string) string {
-	for _, c := range []string{`\n`, `"`, `\`} {
-		if strings.Contains(s, c) {
-			panic(fmt.Errorf("%s contains illegal character %s", s, c))
-		}
-	}
-	return s
-}
-
-type bazelConstant struct {
-	variableName       string
-	internalDefinition string
-	sortLast           bool
-}
-
 // ExportedStringVariables is a mapping of variable names to string values
 type ExportedStringVariables map[string]string
 
@@ -192,25 +124,6 @@ func (m ExportedStringVariables) set(k string, v string) {
 	m[k] = v
 }
 
-func (m ExportedStringVariables) asBazel(config Config,
-	stringVars ExportedStringVariables, stringListVars ExportedStringListVariables, cfgDepVars ExportedConfigDependingVariables) []bazelConstant {
-	ret := make([]bazelConstant, 0, len(m))
-	for k, variableValue := range m {
-		expandedVar, err := expandVar(config, variableValue, stringVars, stringListVars, cfgDepVars)
-		if err != nil {
-			panic(fmt.Errorf("error expanding config variable %s: %s", k, err))
-		}
-		if len(expandedVar) > 1 {
-			panic(fmt.Errorf("%q expands to more than one string value: %q", variableValue, expandedVar))
-		}
-		ret = append(ret, bazelConstant{
-			variableName:       k,
-			internalDefinition: fmt.Sprintf(`"%s"`, validateCharacters(expandedVar[0])),
-		})
-	}
-	return ret
-}
-
 // ExportedStringListVariables is a mapping of variable names to a list of strings
 type ExportedStringListVariables map[string][]string
 
@@ -218,32 +131,6 @@ func (m ExportedStringListVariables) set(k string, v []string) {
 	m[k] = v
 }
 
-func (m ExportedStringListVariables) asBazel(config Config,
-	stringScope ExportedStringVariables, stringListScope ExportedStringListVariables,
-	exportedVars ExportedConfigDependingVariables) []bazelConstant {
-	ret := make([]bazelConstant, 0, len(m))
-	// For each exported variable, recursively expand elements in the variableValue
-	// list to ensure that interpolated variables are expanded according to their values
-	// in the variable scope.
-	for k, variableValue := range m {
-		var expandedVars []string
-		for _, v := range variableValue {
-			expandedVar, err := expandVar(config, v, stringScope, stringListScope, exportedVars)
-			if err != nil {
-				panic(fmt.Errorf("Error expanding config variable %s=%s: %s", k, v, err))
-			}
-			expandedVars = append(expandedVars, expandedVar...)
-		}
-		// Assign the list as a bzl-private variable; this variable will be exported
-		// out through a constants struct later.
-		ret = append(ret, bazelConstant{
-			variableName:       k,
-			internalDefinition: starlark_fmt.PrintStringList(expandedVars, 0),
-		})
-	}
-	return ret
-}
-
 // ExportedStringListDictVariables is a mapping from variable names to a
 // dictionary which maps keys to lists of strings
 type ExportedStringListDictVariables map[string]map[string][]string
@@ -252,19 +139,6 @@ func (m ExportedStringListDictVariables) set(k string, v map[string][]string) {
 	m[k] = v
 }
 
-// Since dictionaries are not supported in Ninja, we do not expand variables for dictionaries
-func (m ExportedStringListDictVariables) asBazel(_ Config, _ ExportedStringVariables,
-	_ ExportedStringListVariables, _ ExportedConfigDependingVariables) []bazelConstant {
-	ret := make([]bazelConstant, 0, len(m))
-	for k, dict := range m {
-		ret = append(ret, bazelConstant{
-			variableName:       k,
-			internalDefinition: starlark_fmt.PrintStringListDict(dict, 0),
-		})
-	}
-	return ret
-}
-
 // ExportedVariableReferenceDictVariables is a mapping from variable names to a
 // dictionary which references previously defined variables. This is used to
 // create a Starlark output such as:
@@ -281,237 +155,3 @@ type ExportedVariableReferenceDictVariables map[string]map[string]string
 func (m ExportedVariableReferenceDictVariables) set(k string, v map[string]string) {
 	m[k] = v
 }
-
-func (m ExportedVariableReferenceDictVariables) asBazel(_ Config, _ ExportedStringVariables,
-	_ ExportedStringListVariables, _ ExportedConfigDependingVariables) []bazelConstant {
-	ret := make([]bazelConstant, 0, len(m))
-	for n, dict := range m {
-		for k, v := range dict {
-			matches, err := variableReference(v)
-			if err != nil {
-				panic(err)
-			} else if !matches.matches {
-				panic(fmt.Errorf("Expected a variable reference, got %q", v))
-			} else if len(matches.fullVariableReference) != len(v) {
-				panic(fmt.Errorf("Expected only a variable reference, got %q", v))
-			}
-			dict[k] = "_" + matches.variable
-		}
-		ret = append(ret, bazelConstant{
-			variableName:       n,
-			internalDefinition: starlark_fmt.PrintDict(dict, 0),
-			sortLast:           true,
-		})
-	}
-	return ret
-}
-
-// BazelToolchainVars expands an ExportedVariables collection and returns a string
-// of formatted Starlark variable definitions
-func BazelToolchainVars(config Config, exportedVars ExportedVariables) string {
-	results := exportedVars.asBazel(
-		config,
-		exportedVars.exportedStringVars,
-		exportedVars.exportedStringListVars,
-		exportedVars.exportedConfigDependingVars,
-	)
-
-	sort.Slice(results, func(i, j int) bool {
-		if results[i].sortLast != results[j].sortLast {
-			return !results[i].sortLast
-		}
-		return results[i].variableName < results[j].variableName
-	})
-
-	definitions := make([]string, 0, len(results))
-	constants := make([]string, 0, len(results))
-	for _, b := range results {
-		definitions = append(definitions,
-			fmt.Sprintf("_%s = %s", b.variableName, b.internalDefinition))
-		constants = append(constants,
-			fmt.Sprintf("%[1]s%[2]s = _%[2]s,", starlark_fmt.Indention(1), b.variableName))
-	}
-
-	// Build the exported constants struct.
-	ret := bazel.GeneratedBazelFileWarning
-	ret += "\n\n"
-	ret += strings.Join(definitions, "\n\n")
-	ret += "\n\n"
-	ret += "constants = struct(\n"
-	ret += strings.Join(constants, "\n")
-	ret += "\n)"
-
-	return ret
-}
-
-type match struct {
-	matches               bool
-	fullVariableReference string
-	variable              string
-}
-
-func variableReference(input string) (match, error) {
-	// e.g. "${ExternalCflags}"
-	r := regexp.MustCompile(`\${(?:config\.)?([a-zA-Z0-9_]+)}`)
-
-	matches := r.FindStringSubmatch(input)
-	if len(matches) == 0 {
-		return match{}, nil
-	}
-	if len(matches) != 2 {
-		return match{}, fmt.Errorf("Expected to only match 1 subexpression in %s, got %d", input, len(matches)-1)
-	}
-	return match{
-		matches:               true,
-		fullVariableReference: matches[0],
-		// Index 1 of FindStringSubmatch contains the subexpression match
-		// (variable name) of the capture group.
-		variable: matches[1],
-	}, nil
-}
-
-// expandVar recursively expand interpolated variables in the exportedVars scope.
-//
-// We're using a string slice to track the seen variables to avoid
-// stackoverflow errors with infinite recursion. it's simpler to use a
-// string slice than to handle a pass-by-referenced map, which would make it
-// quite complex to track depth-first interpolations. It's also unlikely the
-// interpolation stacks are deep (n > 1).
-func expandVar(config Config, toExpand string, stringScope ExportedStringVariables,
-	stringListScope ExportedStringListVariables, exportedVars ExportedConfigDependingVariables) ([]string, error) {
-
-	// Internal recursive function.
-	var expandVarInternal func(string, map[string]bool) (string, error)
-	expandVarInternal = func(toExpand string, seenVars map[string]bool) (string, error) {
-		var ret string
-		remainingString := toExpand
-		for len(remainingString) > 0 {
-			matches, err := variableReference(remainingString)
-			if err != nil {
-				panic(err)
-			}
-			if !matches.matches {
-				return ret + remainingString, nil
-			}
-			matchIndex := strings.Index(remainingString, matches.fullVariableReference)
-			ret += remainingString[:matchIndex]
-			remainingString = remainingString[matchIndex+len(matches.fullVariableReference):]
-
-			variable := matches.variable
-			// toExpand contains a variable.
-			if _, ok := seenVars[variable]; ok {
-				return ret, fmt.Errorf(
-					"Unbounded recursive interpolation of variable: %s", variable)
-			}
-			// A map is passed-by-reference. Create a new map for
-			// this scope to prevent variables seen in one depth-first expansion
-			// to be also treated as "seen" in other depth-first traversals.
-			newSeenVars := map[string]bool{}
-			for k := range seenVars {
-				newSeenVars[k] = true
-			}
-			newSeenVars[variable] = true
-			if unexpandedVars, ok := stringListScope[variable]; ok {
-				expandedVars := []string{}
-				for _, unexpandedVar := range unexpandedVars {
-					expandedVar, err := expandVarInternal(unexpandedVar, newSeenVars)
-					if err != nil {
-						return ret, err
-					}
-					expandedVars = append(expandedVars, expandedVar)
-				}
-				ret += strings.Join(expandedVars, " ")
-			} else if unexpandedVar, ok := stringScope[variable]; ok {
-				expandedVar, err := expandVarInternal(unexpandedVar, newSeenVars)
-				if err != nil {
-					return ret, err
-				}
-				ret += expandedVar
-			} else if unevaluatedVar, ok := exportedVars[variable]; ok {
-				evalFunc := reflect.ValueOf(unevaluatedVar)
-				validateVariableMethod(variable, evalFunc)
-				evaluatedResult := evalFunc.Call([]reflect.Value{reflect.ValueOf(config)})
-				evaluatedValue := evaluatedResult[0].Interface().(string)
-				expandedVar, err := expandVarInternal(evaluatedValue, newSeenVars)
-				if err != nil {
-					return ret, err
-				}
-				ret += expandedVar
-			} else {
-				return "", fmt.Errorf("Unbound config variable %s", variable)
-			}
-		}
-		return ret, nil
-	}
-	var ret []string
-	stringFields := splitStringKeepingQuotedSubstring(toExpand, ' ')
-	for _, v := range stringFields {
-		val, err := expandVarInternal(v, map[string]bool{})
-		if err != nil {
-			return ret, err
-		}
-		ret = append(ret, val)
-	}
-
-	return ret, nil
-}
-
-// splitStringKeepingQuotedSubstring splits a string on a provided separator,
-// but it will not split substrings inside unescaped double quotes. If the double
-// quotes are escaped, then the returned string will only include the quote, and
-// not the escape.
-func splitStringKeepingQuotedSubstring(s string, delimiter byte) []string {
-	var ret []string
-	quote := byte('"')
-
-	var substring []byte
-	quoted := false
-	escaped := false
-
-	for i := range s {
-		if !quoted && s[i] == delimiter {
-			ret = append(ret, string(substring))
-			substring = []byte{}
-			continue
-		}
-
-		characterIsEscape := i < len(s)-1 && s[i] == '\\' && s[i+1] == quote
-		if characterIsEscape {
-			escaped = true
-			continue
-		}
-
-		if s[i] == quote {
-			if !escaped {
-				quoted = !quoted
-			}
-			escaped = false
-		}
-
-		substring = append(substring, s[i])
-	}
-
-	ret = append(ret, string(substring))
-
-	return ret
-}
-
-func validateVariableMethod(name string, methodValue reflect.Value) {
-	methodType := methodValue.Type()
-	if methodType.Kind() != reflect.Func {
-		panic(fmt.Errorf("method given for variable %s is not a function",
-			name))
-	}
-	if n := methodType.NumIn(); n != 1 {
-		panic(fmt.Errorf("method for variable %s has %d inputs (should be 1)",
-			name, n))
-	}
-	if n := methodType.NumOut(); n != 1 {
-		panic(fmt.Errorf("method for variable %s has %d outputs (should be 1)",
-			name, n))
-	}
-	if kind := methodType.Out(0).Kind(); kind != reflect.String {
-		panic(fmt.Errorf("method for variable %s does not return a string",
-			name))
-	}
-}