| // Copyright 2021 Google LLC |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package mk2rbc |
| |
| // Starlark expression types we use |
| type starlarkType int |
| |
| const ( |
| // Variable types. Initially we only know the types of the product |
| // configuration variables that are lists, and the types of some |
| // hardwired variables. The remaining variables are first entered as |
| // having an unknown type and treated as strings, but sometimes we |
| // can infer variable's type from the value assigned to it. |
| starlarkTypeUnknown starlarkType = iota |
| starlarkTypeList starlarkType = iota |
| starlarkTypeString starlarkType = iota |
| starlarkTypeInt starlarkType = iota |
| starlarkTypeBool starlarkType = iota |
| starlarkTypeVoid starlarkType = iota |
| ) |
| |
| type hiddenArgType int |
| |
| const ( |
| // Some functions have an implicitly emitted first argument, which may be |
| // a global ('g') or configuration ('cfg') variable. |
| hiddenArgNone hiddenArgType = iota |
| hiddenArgGlobal hiddenArgType = iota |
| hiddenArgConfig hiddenArgType = iota |
| ) |
| |
| type varClass int |
| |
| const ( |
| VarClassConfig varClass = iota |
| VarClassSoong varClass = iota |
| VarClassLocal varClass = iota |
| ) |
| |
| type variableRegistrar interface { |
| NewVariable(name string, varClass varClass, valueType starlarkType) |
| } |
| |
| // ScopeBase is a placeholder implementation of the mkparser.Scope. |
| // All our scopes are read-only and resolve only simple variables. |
| type ScopeBase struct{} |
| |
| func (s ScopeBase) Set(_, _ string) { |
| panic("implement me") |
| } |
| |
| func (s ScopeBase) Call(_ string, _ []string) []string { |
| panic("implement me") |
| } |
| |
| func (s ScopeBase) SetFunc(_ string, _ func([]string) []string) { |
| panic("implement me") |
| } |
| |
| // Used to find all makefiles in the source tree |
| type MakefileFinder interface { |
| Find(root string) []string |
| } |