Shinichiro Hamaji | b69bf8a | 2015-06-10 14:52:06 +0900 | [diff] [blame] | 1 | // Copyright 2015 Google Inc. All rights reserved |
| 2 | // |
| 3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | // you may not use this file except in compliance with the License. |
| 5 | // You may obtain a copy of the License at |
| 6 | // |
| 7 | // http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | // |
| 9 | // Unless required by applicable law or agreed to in writing, software |
| 10 | // distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | // See the License for the specific language governing permissions and |
| 13 | // limitations under the License. |
| 14 | |
Fumitoshi Ukai | 744bb2b | 2015-06-25 00:10:52 +0900 | [diff] [blame] | 15 | package kati |
Fumitoshi Ukai | 119dc91 | 2015-03-30 16:52:41 +0900 | [diff] [blame] | 16 | |
Fumitoshi Ukai | 6450d0f | 2015-07-10 16:34:06 +0900 | [diff] [blame] | 17 | import ( |
| 18 | "strings" |
| 19 | |
| 20 | "github.com/golang/glog" |
| 21 | ) |
Fumitoshi Ukai | e1b813c | 2015-03-30 18:38:21 +0900 | [diff] [blame] | 22 | |
Fumitoshi Ukai | 91ed5d7 | 2015-06-25 13:08:09 +0900 | [diff] [blame] | 23 | type ast interface { |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame] | 24 | eval(*Evaluator) error |
Fumitoshi Ukai | 119dc91 | 2015-03-30 16:52:41 +0900 | [diff] [blame] | 25 | show() |
| 26 | } |
| 27 | |
Fumitoshi Ukai | 91ed5d7 | 2015-06-25 13:08:09 +0900 | [diff] [blame] | 28 | type assignAST struct { |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame] | 29 | srcpos |
Shinichiro Hamaji | 7825b65 | 2015-06-04 13:47:14 +0900 | [diff] [blame] | 30 | lhs Value |
| 31 | rhs Value |
Fumitoshi Ukai | e1b813c | 2015-03-30 18:38:21 +0900 | [diff] [blame] | 32 | op string |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 33 | opt string // "override", "export" |
Fumitoshi Ukai | 119dc91 | 2015-03-30 16:52:41 +0900 | [diff] [blame] | 34 | } |
| 35 | |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame] | 36 | func (ast *assignAST) eval(ev *Evaluator) error { |
| 37 | return ev.evalAssign(ast) |
Fumitoshi Ukai | 119dc91 | 2015-03-30 16:52:41 +0900 | [diff] [blame] | 38 | } |
| 39 | |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame] | 40 | func (ast *assignAST) evalRHS(ev *Evaluator, lhs string) (Var, error) { |
Fumitoshi Ukai | 103a796 | 2015-04-08 15:53:53 +0900 | [diff] [blame] | 41 | origin := "file" |
Fumitoshi Ukai | 744bb2b | 2015-06-25 00:10:52 +0900 | [diff] [blame] | 42 | if ast.filename == bootstrapMakefileName { |
Fumitoshi Ukai | 103a796 | 2015-04-08 15:53:53 +0900 | [diff] [blame] | 43 | origin = "default" |
| 44 | } |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 45 | if ast.opt == "override" { |
| 46 | origin = "override" |
| 47 | } |
| 48 | // TODO(ukai): handle ast.opt == "export" |
Fumitoshi Ukai | e1b813c | 2015-03-30 18:38:21 +0900 | [diff] [blame] | 49 | switch ast.op { |
| 50 | case ":=": |
Fumitoshi Ukai | dd248f2 | 2015-06-18 23:04:28 +0900 | [diff] [blame] | 51 | switch v := ast.rhs.(type) { |
| 52 | case literal: |
Fumitoshi Ukai | 7655f18 | 2015-07-15 14:05:41 +0900 | [diff] [blame] | 53 | return &simpleVar{value: []string{v.String()}, origin: origin}, nil |
Fumitoshi Ukai | dd248f2 | 2015-06-18 23:04:28 +0900 | [diff] [blame] | 54 | case tmpval: |
Fumitoshi Ukai | 7655f18 | 2015-07-15 14:05:41 +0900 | [diff] [blame] | 55 | return &simpleVar{value: []string{v.String()}, origin: origin}, nil |
Fumitoshi Ukai | dd248f2 | 2015-06-18 23:04:28 +0900 | [diff] [blame] | 56 | default: |
Fumitoshi Ukai | a4a0225 | 2015-07-09 14:25:18 +0900 | [diff] [blame] | 57 | var buf evalBuffer |
| 58 | buf.resetSep() |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame] | 59 | err := v.Eval(&buf, ev) |
| 60 | if err != nil { |
| 61 | return nil, err |
| 62 | } |
Fumitoshi Ukai | 7655f18 | 2015-07-15 14:05:41 +0900 | [diff] [blame] | 63 | return &simpleVar{value: []string{buf.String()}, origin: origin}, nil |
Fumitoshi Ukai | dd248f2 | 2015-06-18 23:04:28 +0900 | [diff] [blame] | 64 | } |
Fumitoshi Ukai | e1b813c | 2015-03-30 18:38:21 +0900 | [diff] [blame] | 65 | case "=": |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame] | 66 | return &recursiveVar{expr: ast.rhs, origin: origin}, nil |
Shinichiro Hamaji | 69b7f65 | 2015-03-31 01:01:59 +0900 | [diff] [blame] | 67 | case "+=": |
Fumitoshi Ukai | a483ec0 | 2015-06-26 10:12:02 +0900 | [diff] [blame] | 68 | prev := ev.lookupVarInCurrentScope(lhs) |
Fumitoshi Ukai | c184760 | 2015-04-02 16:18:02 +0900 | [diff] [blame] | 69 | if !prev.IsDefined() { |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame] | 70 | return &recursiveVar{expr: ast.rhs, origin: origin}, nil |
Fumitoshi Ukai | 8edcb79 | 2015-04-02 11:23:23 +0900 | [diff] [blame] | 71 | } |
Shinichiro Hamaji | 7825b65 | 2015-06-04 13:47:14 +0900 | [diff] [blame] | 72 | return prev.AppendVar(ev, ast.rhs) |
Shinichiro Hamaji | 69b7f65 | 2015-03-31 01:01:59 +0900 | [diff] [blame] | 73 | case "?=": |
Fumitoshi Ukai | a483ec0 | 2015-06-26 10:12:02 +0900 | [diff] [blame] | 74 | prev := ev.lookupVarInCurrentScope(lhs) |
Fumitoshi Ukai | 8edcb79 | 2015-04-02 11:23:23 +0900 | [diff] [blame] | 75 | if prev.IsDefined() { |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame] | 76 | return prev, nil |
Shinichiro Hamaji | 69b7f65 | 2015-03-31 01:01:59 +0900 | [diff] [blame] | 77 | } |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame] | 78 | return &recursiveVar{expr: ast.rhs, origin: origin}, nil |
Fumitoshi Ukai | e1b813c | 2015-03-30 18:38:21 +0900 | [diff] [blame] | 79 | } |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame] | 80 | return nil, ast.errorf("unknown assign op: %q", ast.op) |
Fumitoshi Ukai | e1b813c | 2015-03-30 18:38:21 +0900 | [diff] [blame] | 81 | } |
| 82 | |
Fumitoshi Ukai | 91ed5d7 | 2015-06-25 13:08:09 +0900 | [diff] [blame] | 83 | func (ast *assignAST) show() { |
Fumitoshi Ukai | 6450d0f | 2015-07-10 16:34:06 +0900 | [diff] [blame] | 84 | glog.Infof("%s %s %s %q", ast.opt, ast.lhs, ast.op, ast.rhs) |
Fumitoshi Ukai | 119dc91 | 2015-03-30 16:52:41 +0900 | [diff] [blame] | 85 | } |
| 86 | |
Fumitoshi Ukai | 91ed5d7 | 2015-06-25 13:08:09 +0900 | [diff] [blame] | 87 | // maybeRuleAST is an ast for rule line. |
Shinichiro Hamaji | de82971 | 2015-03-31 18:26:56 +0900 | [diff] [blame] | 88 | // Note we cannot be sure what this is, until all variables in |expr| |
| 89 | // are expanded. |
Fumitoshi Ukai | 91ed5d7 | 2015-06-25 13:08:09 +0900 | [diff] [blame] | 90 | type maybeRuleAST struct { |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame] | 91 | srcpos |
Fumitoshi Ukai | 201df42 | 2015-07-07 17:31:05 +0900 | [diff] [blame] | 92 | isRule bool // found literal ':' |
| 93 | expr Value |
| 94 | assign *assignAST // target specific var |
| 95 | semi []byte // after ';' if ';' exists |
Fumitoshi Ukai | 119dc91 | 2015-03-30 16:52:41 +0900 | [diff] [blame] | 96 | } |
| 97 | |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame] | 98 | func (ast *maybeRuleAST) eval(ev *Evaluator) error { |
| 99 | return ev.evalMaybeRule(ast) |
Fumitoshi Ukai | 119dc91 | 2015-03-30 16:52:41 +0900 | [diff] [blame] | 100 | } |
| 101 | |
Fumitoshi Ukai | 91ed5d7 | 2015-06-25 13:08:09 +0900 | [diff] [blame] | 102 | func (ast *maybeRuleAST) show() { |
Fumitoshi Ukai | 6450d0f | 2015-07-10 16:34:06 +0900 | [diff] [blame] | 103 | glog.Info(ast.expr) |
Fumitoshi Ukai | 119dc91 | 2015-03-30 16:52:41 +0900 | [diff] [blame] | 104 | } |
Shinichiro Hamaji | 685fecf | 2015-03-30 18:28:12 +0900 | [diff] [blame] | 105 | |
Fumitoshi Ukai | 91ed5d7 | 2015-06-25 13:08:09 +0900 | [diff] [blame] | 106 | type commandAST struct { |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame] | 107 | srcpos |
Fumitoshi Ukai | 103a796 | 2015-04-08 15:53:53 +0900 | [diff] [blame] | 108 | cmd string |
Shinichiro Hamaji | 0b93c86 | 2015-04-07 06:15:15 +0900 | [diff] [blame] | 109 | } |
| 110 | |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame] | 111 | func (ast *commandAST) eval(ev *Evaluator) error { |
| 112 | return ev.evalCommand(ast) |
Shinichiro Hamaji | 0b93c86 | 2015-04-07 06:15:15 +0900 | [diff] [blame] | 113 | } |
| 114 | |
Fumitoshi Ukai | 91ed5d7 | 2015-06-25 13:08:09 +0900 | [diff] [blame] | 115 | func (ast *commandAST) show() { |
Fumitoshi Ukai | 6450d0f | 2015-07-10 16:34:06 +0900 | [diff] [blame] | 116 | glog.Infof("\t%s", strings.Replace(ast.cmd, "\n", `\n`, -1)) |
Shinichiro Hamaji | 0b93c86 | 2015-04-07 06:15:15 +0900 | [diff] [blame] | 117 | } |
| 118 | |
Fumitoshi Ukai | 91ed5d7 | 2015-06-25 13:08:09 +0900 | [diff] [blame] | 119 | type includeAST struct { |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame] | 120 | srcpos |
Shinichiro Hamaji | d7bef60 | 2015-03-30 19:55:32 +0900 | [diff] [blame] | 121 | expr string |
| 122 | op string |
| 123 | } |
| 124 | |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame] | 125 | func (ast *includeAST) eval(ev *Evaluator) error { |
| 126 | return ev.evalInclude(ast) |
Shinichiro Hamaji | d7bef60 | 2015-03-30 19:55:32 +0900 | [diff] [blame] | 127 | } |
| 128 | |
Fumitoshi Ukai | 91ed5d7 | 2015-06-25 13:08:09 +0900 | [diff] [blame] | 129 | func (ast *includeAST) show() { |
Fumitoshi Ukai | 6450d0f | 2015-07-10 16:34:06 +0900 | [diff] [blame] | 130 | glog.Infof("include %s", ast.expr) |
Shinichiro Hamaji | d7bef60 | 2015-03-30 19:55:32 +0900 | [diff] [blame] | 131 | } |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 132 | |
Fumitoshi Ukai | 91ed5d7 | 2015-06-25 13:08:09 +0900 | [diff] [blame] | 133 | type ifAST struct { |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame] | 134 | srcpos |
Shinichiro Hamaji | ae32b78 | 2015-03-31 14:41:19 +0900 | [diff] [blame] | 135 | op string |
Shinichiro Hamaji | 1a68fd2 | 2015-06-04 14:46:56 +0900 | [diff] [blame] | 136 | lhs Value |
| 137 | rhs Value // Empty if |op| is ifdef or ifndef. |
Fumitoshi Ukai | 91ed5d7 | 2015-06-25 13:08:09 +0900 | [diff] [blame] | 138 | trueStmts []ast |
| 139 | falseStmts []ast |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 140 | } |
| 141 | |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame] | 142 | func (ast *ifAST) eval(ev *Evaluator) error { |
| 143 | return ev.evalIf(ast) |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 144 | } |
| 145 | |
Fumitoshi Ukai | 91ed5d7 | 2015-06-25 13:08:09 +0900 | [diff] [blame] | 146 | func (ast *ifAST) show() { |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 147 | // TODO |
Fumitoshi Ukai | 6450d0f | 2015-07-10 16:34:06 +0900 | [diff] [blame] | 148 | glog.Info("if") |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 149 | } |
Shinichiro Hamaji | 7e52142 | 2015-05-29 14:23:30 +0900 | [diff] [blame] | 150 | |
Fumitoshi Ukai | 91ed5d7 | 2015-06-25 13:08:09 +0900 | [diff] [blame] | 151 | type exportAST struct { |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame] | 152 | srcpos |
Fumitoshi Ukai | f5b916d | 2015-07-15 15:57:19 +0900 | [diff] [blame] | 153 | expr []byte |
| 154 | hasEqual bool |
| 155 | export bool |
Shinichiro Hamaji | 7e52142 | 2015-05-29 14:23:30 +0900 | [diff] [blame] | 156 | } |
| 157 | |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame] | 158 | func (ast *exportAST) eval(ev *Evaluator) error { |
| 159 | return ev.evalExport(ast) |
Shinichiro Hamaji | 7e52142 | 2015-05-29 14:23:30 +0900 | [diff] [blame] | 160 | } |
| 161 | |
Fumitoshi Ukai | 91ed5d7 | 2015-06-25 13:08:09 +0900 | [diff] [blame] | 162 | func (ast *exportAST) show() { |
Shinichiro Hamaji | 7e52142 | 2015-05-29 14:23:30 +0900 | [diff] [blame] | 163 | // TODO |
Fumitoshi Ukai | 6450d0f | 2015-07-10 16:34:06 +0900 | [diff] [blame] | 164 | glog.Info("export") |
Shinichiro Hamaji | 7e52142 | 2015-05-29 14:23:30 +0900 | [diff] [blame] | 165 | } |
Fumitoshi Ukai | 09fcd52 | 2015-07-15 14:31:50 +0900 | [diff] [blame] | 166 | |
| 167 | type vpathAST struct { |
| 168 | srcpos |
| 169 | expr Value |
| 170 | } |
| 171 | |
| 172 | func (ast *vpathAST) eval(ev *Evaluator) error { |
| 173 | return ev.evalVpath(ast) |
| 174 | } |
| 175 | |
| 176 | func (ast *vpathAST) show() { |
| 177 | glog.Infof("vpath %s", ast.expr.String()) |
| 178 | } |