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 | 0aa4fc4 | 2015-04-10 17:00:19 +0900 | [diff] [blame] | 17 | //go:generate go run testcase/gen_testcase_parse_benchmark.go |
| 18 | // |
| 19 | // $ go generate |
| 20 | // $ go test -bench . |
| 21 | |
Fumitoshi Ukai | 119dc91 | 2015-03-30 16:52:41 +0900 | [diff] [blame] | 22 | import ( |
| 23 | "bufio" |
Shinichiro Hamaji | e184158 | 2015-03-30 17:20:33 +0900 | [diff] [blame] | 24 | "bytes" |
Fumitoshi Ukai | 9042b99 | 2015-06-23 16:10:27 +0900 | [diff] [blame] | 25 | "crypto/sha1" |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 26 | "errors" |
Fumitoshi Ukai | f8efa0a | 2015-03-30 18:10:11 +0900 | [diff] [blame] | 27 | "fmt" |
Fumitoshi Ukai | 119dc91 | 2015-03-30 16:52:41 +0900 | [diff] [blame] | 28 | "io" |
Fumitoshi Ukai | 9042b99 | 2015-06-23 16:10:27 +0900 | [diff] [blame] | 29 | "io/ioutil" |
Shinichiro Hamaji | d7bef60 | 2015-03-30 19:55:32 +0900 | [diff] [blame] | 30 | "strings" |
Fumitoshi Ukai | 9042b99 | 2015-06-23 16:10:27 +0900 | [diff] [blame] | 31 | "sync" |
Shinichiro Hamaji | 584bb06 | 2015-06-04 13:25:13 +0900 | [diff] [blame] | 32 | "time" |
Fumitoshi Ukai | 119dc91 | 2015-03-30 16:52:41 +0900 | [diff] [blame] | 33 | ) |
| 34 | |
Fumitoshi Ukai | 08eda65 | 2015-06-25 16:27:10 +0900 | [diff] [blame] | 35 | type makefile struct { |
Shinichiro Hamaji | 491e73f | 2015-04-07 12:41:59 +0900 | [diff] [blame] | 36 | filename string |
Fumitoshi Ukai | 91ed5d7 | 2015-06-25 13:08:09 +0900 | [diff] [blame] | 37 | stmts []ast |
Fumitoshi Ukai | 119dc91 | 2015-03-30 16:52:41 +0900 | [diff] [blame] | 38 | } |
| 39 | |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 40 | type ifState struct { |
Fumitoshi Ukai | 91ed5d7 | 2015-06-25 13:08:09 +0900 | [diff] [blame] | 41 | ast *ifAST |
Shinichiro Hamaji | a06760f | 2015-04-07 13:13:45 +0900 | [diff] [blame] | 42 | inElse bool |
| 43 | numNest int |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 44 | } |
| 45 | |
Fumitoshi Ukai | 119dc91 | 2015-03-30 16:52:41 +0900 | [diff] [blame] | 46 | type parser struct { |
Shinichiro Hamaji | 370be72 | 2015-04-10 14:55:23 +0900 | [diff] [blame] | 47 | rd *bufio.Reader |
Fumitoshi Ukai | 08eda65 | 2015-06-25 16:27:10 +0900 | [diff] [blame] | 48 | mk makefile |
Shinichiro Hamaji | 370be72 | 2015-04-10 14:55:23 +0900 | [diff] [blame] | 49 | lineno int |
| 50 | elineno int // lineno == elineno unless there is trailing '\'. |
| 51 | linenoFixed bool |
Shinichiro Hamaji | 370be72 | 2015-04-10 14:55:23 +0900 | [diff] [blame] | 52 | done bool |
Fumitoshi Ukai | 91ed5d7 | 2015-06-25 13:08:09 +0900 | [diff] [blame] | 53 | outStmts *[]ast |
Shinichiro Hamaji | 370be72 | 2015-04-10 14:55:23 +0900 | [diff] [blame] | 54 | ifStack []ifState |
| 55 | inDef []string |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 56 | defOpt string |
Shinichiro Hamaji | 370be72 | 2015-04-10 14:55:23 +0900 | [diff] [blame] | 57 | numIfNest int |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 58 | err error |
Fumitoshi Ukai | 119dc91 | 2015-03-30 16:52:41 +0900 | [diff] [blame] | 59 | } |
| 60 | |
Shinichiro Hamaji | 685fecf | 2015-03-30 18:28:12 +0900 | [diff] [blame] | 61 | func newParser(rd io.Reader, filename string) *parser { |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 62 | p := &parser{ |
Shinichiro Hamaji | 3fab47e | 2015-04-08 18:34:41 +0900 | [diff] [blame] | 63 | rd: bufio.NewReader(rd), |
Fumitoshi Ukai | 119dc91 | 2015-03-30 16:52:41 +0900 | [diff] [blame] | 64 | } |
Shinichiro Hamaji | 491e73f | 2015-04-07 12:41:59 +0900 | [diff] [blame] | 65 | p.mk.filename = filename |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 66 | p.outStmts = &p.mk.stmts |
| 67 | return p |
| 68 | } |
| 69 | |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 70 | func (p *parser) srcpos() srcpos { |
| 71 | return srcpos{ |
| 72 | filename: p.mk.filename, |
| 73 | lineno: p.lineno, |
| 74 | } |
| 75 | } |
| 76 | |
Fumitoshi Ukai | 91ed5d7 | 2015-06-25 13:08:09 +0900 | [diff] [blame] | 77 | func (p *parser) addStatement(stmt ast) { |
| 78 | *p.outStmts = append(*p.outStmts, stmt) |
Fumitoshi Ukai | 119dc91 | 2015-03-30 16:52:41 +0900 | [diff] [blame] | 79 | } |
| 80 | |
Shinichiro Hamaji | e184158 | 2015-03-30 17:20:33 +0900 | [diff] [blame] | 81 | func (p *parser) readLine() []byte { |
Shinichiro Hamaji | 370be72 | 2015-04-10 14:55:23 +0900 | [diff] [blame] | 82 | if !p.linenoFixed { |
| 83 | p.lineno = p.elineno |
| 84 | } |
Shinichiro Hamaji | e184158 | 2015-03-30 17:20:33 +0900 | [diff] [blame] | 85 | line, err := p.rd.ReadBytes('\n') |
Shinichiro Hamaji | 370be72 | 2015-04-10 14:55:23 +0900 | [diff] [blame] | 86 | if !p.linenoFixed { |
| 87 | p.lineno++ |
| 88 | p.elineno = p.lineno |
| 89 | } |
Shinichiro Hamaji | e184158 | 2015-03-30 17:20:33 +0900 | [diff] [blame] | 90 | if err == io.EOF { |
| 91 | p.done = true |
| 92 | } else if err != nil { |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 93 | p.err = fmt.Errorf("readline %s: %v", p.srcpos(), err) |
| 94 | p.done = true |
Shinichiro Hamaji | e184158 | 2015-03-30 17:20:33 +0900 | [diff] [blame] | 95 | } |
| 96 | |
Shinichiro Hamaji | 56c868c | 2015-04-09 10:17:10 +0900 | [diff] [blame] | 97 | line = bytes.TrimRight(line, "\r\n") |
Shinichiro Hamaji | e184158 | 2015-03-30 17:20:33 +0900 | [diff] [blame] | 98 | |
Shinichiro Hamaji | 52e83aa | 2015-04-06 17:20:28 +0900 | [diff] [blame] | 99 | return line |
| 100 | } |
| 101 | |
| 102 | func removeComment(line []byte) []byte { |
| 103 | var parenStack []byte |
Shinichiro Hamaji | f4d3ee5 | 2015-04-22 16:19:33 +0900 | [diff] [blame] | 104 | // Do not use range as we may modify |line| and |i|. |
| 105 | for i := 0; i < len(line); i++ { |
| 106 | ch := line[i] |
Shinichiro Hamaji | 52e83aa | 2015-04-06 17:20:28 +0900 | [diff] [blame] | 107 | switch ch { |
| 108 | case '(', '{': |
| 109 | parenStack = append(parenStack, ch) |
| 110 | case ')', '}': |
| 111 | if len(parenStack) > 0 { |
Shinichiro Hamaji | f863d86 | 2015-06-17 16:48:37 +0900 | [diff] [blame] | 112 | cp := closeParen(parenStack[len(parenStack)-1]) |
| 113 | if cp == ch { |
| 114 | parenStack = parenStack[:len(parenStack)-1] |
| 115 | } |
Shinichiro Hamaji | 52e83aa | 2015-04-06 17:20:28 +0900 | [diff] [blame] | 116 | } |
| 117 | case '#': |
| 118 | if len(parenStack) == 0 { |
Shinichiro Hamaji | f4d3ee5 | 2015-04-22 16:19:33 +0900 | [diff] [blame] | 119 | if i == 0 || line[i-1] != '\\' { |
| 120 | return line[:i] |
| 121 | } |
| 122 | // Drop the backslash before '#'. |
| 123 | line = append(line[:i-1], line[i:]...) |
| 124 | i-- |
Shinichiro Hamaji | 52e83aa | 2015-04-06 17:20:28 +0900 | [diff] [blame] | 125 | } |
| 126 | } |
| 127 | } |
| 128 | return line |
| 129 | } |
| 130 | |
Shinichiro Hamaji | e2f6e90 | 2015-04-22 16:08:47 +0900 | [diff] [blame] | 131 | func hasTrailingBackslash(line []byte) bool { |
| 132 | if len(line) == 0 { |
| 133 | return false |
| 134 | } |
| 135 | if line[len(line)-1] != '\\' { |
| 136 | return false |
| 137 | } |
| 138 | return len(line) <= 1 || line[len(line)-2] != '\\' |
| 139 | } |
| 140 | |
Shinichiro Hamaji | e52c16c | 2015-04-11 23:41:39 +0900 | [diff] [blame] | 141 | func (p *parser) processDefineLine(line []byte) []byte { |
Shinichiro Hamaji | e2f6e90 | 2015-04-22 16:08:47 +0900 | [diff] [blame] | 142 | for hasTrailingBackslash(line) { |
Shinichiro Hamaji | e184158 | 2015-03-30 17:20:33 +0900 | [diff] [blame] | 143 | line = line[:len(line)-1] |
Shinichiro Hamaji | c4c9810 | 2015-04-12 03:56:00 +0900 | [diff] [blame] | 144 | line = bytes.TrimRight(line, "\t ") |
Shinichiro Hamaji | 3e4533d | 2015-04-06 14:03:58 +0900 | [diff] [blame] | 145 | lineno := p.lineno |
Shinichiro Hamaji | c4c9810 | 2015-04-12 03:56:00 +0900 | [diff] [blame] | 146 | nline := trimLeftSpaceBytes(p.readLine()) |
Shinichiro Hamaji | 3e4533d | 2015-04-06 14:03:58 +0900 | [diff] [blame] | 147 | p.lineno = lineno |
Shinichiro Hamaji | c4c9810 | 2015-04-12 03:56:00 +0900 | [diff] [blame] | 148 | line = append(line, ' ') |
Shinichiro Hamaji | e184158 | 2015-03-30 17:20:33 +0900 | [diff] [blame] | 149 | line = append(line, nline...) |
| 150 | } |
Shinichiro Hamaji | e52c16c | 2015-04-11 23:41:39 +0900 | [diff] [blame] | 151 | return line |
| 152 | } |
| 153 | |
| 154 | func (p *parser) processMakefileLine(line []byte) []byte { |
| 155 | return removeComment(p.processDefineLine(line)) |
Shinichiro Hamaji | 52e83aa | 2015-04-06 17:20:28 +0900 | [diff] [blame] | 156 | } |
Shinichiro Hamaji | e184158 | 2015-03-30 17:20:33 +0900 | [diff] [blame] | 157 | |
Shinichiro Hamaji | 0b93c86 | 2015-04-07 06:15:15 +0900 | [diff] [blame] | 158 | func (p *parser) processRecipeLine(line []byte) []byte { |
Shinichiro Hamaji | e2f6e90 | 2015-04-22 16:08:47 +0900 | [diff] [blame] | 159 | for hasTrailingBackslash(line) { |
Shinichiro Hamaji | 52e83aa | 2015-04-06 17:20:28 +0900 | [diff] [blame] | 160 | line = append(line, '\n') |
| 161 | lineno := p.lineno |
| 162 | nline := p.readLine() |
| 163 | p.lineno = lineno |
| 164 | line = append(line, nline...) |
Shinichiro Hamaji | e184158 | 2015-03-30 17:20:33 +0900 | [diff] [blame] | 165 | } |
Shinichiro Hamaji | e184158 | 2015-03-30 17:20:33 +0900 | [diff] [blame] | 166 | return line |
| 167 | } |
| 168 | |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 169 | func newAssignAST(p *parser, lhsBytes []byte, rhsBytes []byte, op string) (*assignAST, error) { |
Fumitoshi Ukai | 7c9aa9f | 2015-06-12 23:51:38 +0900 | [diff] [blame] | 170 | lhs, _, err := parseExpr(lhsBytes, nil, true) |
Shinichiro Hamaji | 7825b65 | 2015-06-04 13:47:14 +0900 | [diff] [blame] | 171 | if err != nil { |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 172 | return nil, err |
Shinichiro Hamaji | 7825b65 | 2015-06-04 13:47:14 +0900 | [diff] [blame] | 173 | } |
Fumitoshi Ukai | 7c9aa9f | 2015-06-12 23:51:38 +0900 | [diff] [blame] | 174 | rhs, _, err := parseExpr(rhsBytes, nil, true) |
Shinichiro Hamaji | 7825b65 | 2015-06-04 13:47:14 +0900 | [diff] [blame] | 175 | if err != nil { |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 176 | return nil, err |
Shinichiro Hamaji | 7825b65 | 2015-06-04 13:47:14 +0900 | [diff] [blame] | 177 | } |
| 178 | opt := "" |
| 179 | if p != nil { |
| 180 | opt = p.defOpt |
| 181 | } |
Fumitoshi Ukai | 91ed5d7 | 2015-06-25 13:08:09 +0900 | [diff] [blame] | 182 | return &assignAST{ |
Shinichiro Hamaji | 7825b65 | 2015-06-04 13:47:14 +0900 | [diff] [blame] | 183 | lhs: lhs, |
| 184 | rhs: rhs, |
| 185 | op: op, |
| 186 | opt: opt, |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 187 | }, nil |
Shinichiro Hamaji | 7825b65 | 2015-06-04 13:47:14 +0900 | [diff] [blame] | 188 | } |
| 189 | |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 190 | func (p *parser) parseAssign(line []byte, sep, esep int) (ast, error) { |
Fumitoshi Ukai | 07cf121 | 2015-06-25 17:16:25 +0900 | [diff] [blame] | 191 | logf("parseAssign %q op:%q", line, line[sep:esep]) |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 192 | aast, err := newAssignAST(p, bytes.TrimSpace(line[:sep]), trimLeftSpaceBytes(line[esep:]), string(line[sep:esep])) |
| 193 | if err != nil { |
| 194 | return nil, err |
| 195 | } |
| 196 | aast.srcpos = p.srcpos() |
| 197 | return aast, nil |
Fumitoshi Ukai | 119dc91 | 2015-03-30 16:52:41 +0900 | [diff] [blame] | 198 | } |
| 199 | |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 200 | func (p *parser) parseMaybeRule(line []byte, equalIndex, semicolonIndex int) (ast, error) { |
Shinichiro Hamaji | 50309a6 | 2015-06-04 14:01:55 +0900 | [diff] [blame] | 201 | if len(trimSpaceBytes(line)) == 0 { |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 202 | return nil, nil |
Shinichiro Hamaji | de82971 | 2015-03-31 18:26:56 +0900 | [diff] [blame] | 203 | } |
Shinichiro Hamaji | de82971 | 2015-03-31 18:26:56 +0900 | [diff] [blame] | 204 | |
Shinichiro Hamaji | 171a3df | 2015-06-04 14:17:45 +0900 | [diff] [blame] | 205 | expr := line |
| 206 | var term byte |
| 207 | var afterTerm []byte |
| 208 | |
Shinichiro Hamaji | e12e24d | 2015-04-11 23:09:20 +0900 | [diff] [blame] | 209 | // Either '=' or ';' is used. |
| 210 | if equalIndex >= 0 && semicolonIndex >= 0 { |
| 211 | if equalIndex < semicolonIndex { |
| 212 | semicolonIndex = -1 |
| 213 | } else { |
| 214 | equalIndex = -1 |
| 215 | } |
| 216 | } |
Shinichiro Hamaji | 171a3df | 2015-06-04 14:17:45 +0900 | [diff] [blame] | 217 | if semicolonIndex >= 0 { |
| 218 | afterTerm = expr[semicolonIndex:] |
| 219 | expr = expr[0:semicolonIndex] |
| 220 | term = ';' |
| 221 | } else if equalIndex >= 0 { |
| 222 | afterTerm = expr[equalIndex:] |
| 223 | expr = expr[0:equalIndex] |
| 224 | term = '=' |
| 225 | } |
Shinichiro Hamaji | e12e24d | 2015-04-11 23:09:20 +0900 | [diff] [blame] | 226 | |
Fumitoshi Ukai | 7c9aa9f | 2015-06-12 23:51:38 +0900 | [diff] [blame] | 227 | v, _, err := parseExpr(expr, nil, true) |
Shinichiro Hamaji | 2d4b605 | 2015-06-04 14:20:44 +0900 | [diff] [blame] | 228 | if err != nil { |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 229 | return nil, p.srcpos().error(err) |
Shinichiro Hamaji | 2d4b605 | 2015-06-04 14:20:44 +0900 | [diff] [blame] | 230 | } |
| 231 | |
Fumitoshi Ukai | 91ed5d7 | 2015-06-25 13:08:09 +0900 | [diff] [blame] | 232 | rast := &maybeRuleAST{ |
Shinichiro Hamaji | 2d4b605 | 2015-06-04 14:20:44 +0900 | [diff] [blame] | 233 | expr: v, |
Shinichiro Hamaji | 171a3df | 2015-06-04 14:17:45 +0900 | [diff] [blame] | 234 | term: term, |
| 235 | afterTerm: afterTerm, |
Shinichiro Hamaji | 7f1ede3 | 2015-03-30 18:05:22 +0900 | [diff] [blame] | 236 | } |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 237 | rast.srcpos = p.srcpos() |
| 238 | return rast, nil |
Fumitoshi Ukai | 119dc91 | 2015-03-30 16:52:41 +0900 | [diff] [blame] | 239 | } |
| 240 | |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 241 | func (p *parser) parseInclude(line string, oplen int) { |
Fumitoshi Ukai | b36f387 | 2015-04-10 15:06:38 +0900 | [diff] [blame] | 242 | // TODO(ukai): parse expr here |
Fumitoshi Ukai | 91ed5d7 | 2015-06-25 13:08:09 +0900 | [diff] [blame] | 243 | iast := &includeAST{ |
Shinichiro Hamaji | d7bef60 | 2015-03-30 19:55:32 +0900 | [diff] [blame] | 244 | expr: line[oplen+1:], |
| 245 | op: line[:oplen], |
| 246 | } |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 247 | iast.srcpos = p.srcpos() |
| 248 | p.addStatement(iast) |
Shinichiro Hamaji | d7bef60 | 2015-03-30 19:55:32 +0900 | [diff] [blame] | 249 | } |
| 250 | |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 251 | func (p *parser) parseIfdef(line []byte, oplen int) { |
Fumitoshi Ukai | 7c9aa9f | 2015-06-12 23:51:38 +0900 | [diff] [blame] | 252 | lhs, _, err := parseExpr(trimLeftSpaceBytes(line[oplen+1:]), nil, true) |
Shinichiro Hamaji | 1a68fd2 | 2015-06-04 14:46:56 +0900 | [diff] [blame] | 253 | if err != nil { |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 254 | p.err = p.srcpos().error(err) |
| 255 | return |
Shinichiro Hamaji | 1a68fd2 | 2015-06-04 14:46:56 +0900 | [diff] [blame] | 256 | } |
Fumitoshi Ukai | 91ed5d7 | 2015-06-25 13:08:09 +0900 | [diff] [blame] | 257 | iast := &ifAST{ |
Shinichiro Hamaji | 61d2e11 | 2015-06-04 14:56:47 +0900 | [diff] [blame] | 258 | op: string(line[:oplen]), |
Shinichiro Hamaji | 1a68fd2 | 2015-06-04 14:46:56 +0900 | [diff] [blame] | 259 | lhs: lhs, |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 260 | } |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 261 | iast.srcpos = p.srcpos() |
Fumitoshi Ukai | 91ed5d7 | 2015-06-25 13:08:09 +0900 | [diff] [blame] | 262 | p.addStatement(iast) |
| 263 | p.ifStack = append(p.ifStack, ifState{ast: iast, numNest: p.numIfNest}) |
| 264 | p.outStmts = &iast.trueStmts |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 265 | } |
| 266 | |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 267 | func (p *parser) parseTwoQuotes(s string, op string) ([]string, bool, error) { |
Shinichiro Hamaji | 76de43e | 2015-04-03 10:40:18 +0900 | [diff] [blame] | 268 | var args []string |
Shinichiro Hamaji | 1f47638 | 2015-04-09 14:46:04 +0900 | [diff] [blame] | 269 | for i := 0; i < 2; i++ { |
| 270 | s = strings.TrimSpace(s) |
Fumitoshi Ukai | b36f387 | 2015-04-10 15:06:38 +0900 | [diff] [blame] | 271 | if s == "" { |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 272 | return nil, false, nil |
Shinichiro Hamaji | 76de43e | 2015-04-03 10:40:18 +0900 | [diff] [blame] | 273 | } |
Shinichiro Hamaji | 1f47638 | 2015-04-09 14:46:04 +0900 | [diff] [blame] | 274 | quote := s[0] |
| 275 | if quote != '\'' && quote != '"' { |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 276 | return nil, false, nil |
Shinichiro Hamaji | 76de43e | 2015-04-03 10:40:18 +0900 | [diff] [blame] | 277 | } |
Shinichiro Hamaji | 1f47638 | 2015-04-09 14:46:04 +0900 | [diff] [blame] | 278 | end := strings.IndexByte(s[1:], quote) + 1 |
| 279 | if end < 0 { |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 280 | return nil, false, nil |
Shinichiro Hamaji | 1f47638 | 2015-04-09 14:46:04 +0900 | [diff] [blame] | 281 | } |
Shinichiro Hamaji | 1f47638 | 2015-04-09 14:46:04 +0900 | [diff] [blame] | 282 | args = append(args, s[1:end]) |
| 283 | s = s[end+1:] |
| 284 | } |
| 285 | if len(s) > 0 { |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 286 | return nil, false, p.srcpos().errorf(`extraneous text after %q directive`, op) |
Shinichiro Hamaji | 76de43e | 2015-04-03 10:40:18 +0900 | [diff] [blame] | 287 | } |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 288 | return args, true, nil |
Shinichiro Hamaji | 76de43e | 2015-04-03 10:40:18 +0900 | [diff] [blame] | 289 | } |
| 290 | |
Fumitoshi Ukai | b36f387 | 2015-04-10 15:06:38 +0900 | [diff] [blame] | 291 | // parse |
| 292 | // "(lhs, rhs)" |
| 293 | // "lhs, rhs" |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 294 | func (p *parser) parseEq(s string, op string) (string, string, bool, error) { |
Fumitoshi Ukai | b36f387 | 2015-04-10 15:06:38 +0900 | [diff] [blame] | 295 | if s[0] == '(' && s[len(s)-1] == ')' { |
| 296 | s = s[1 : len(s)-1] |
| 297 | term := []byte{','} |
| 298 | in := []byte(s) |
Fumitoshi Ukai | 7c9aa9f | 2015-06-12 23:51:38 +0900 | [diff] [blame] | 299 | v, n, err := parseExpr(in, term, false) |
Fumitoshi Ukai | b36f387 | 2015-04-10 15:06:38 +0900 | [diff] [blame] | 300 | if err != nil { |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 301 | return "", "", false, err |
Shinichiro Hamaji | 76de43e | 2015-04-03 10:40:18 +0900 | [diff] [blame] | 302 | } |
Fumitoshi Ukai | b36f387 | 2015-04-10 15:06:38 +0900 | [diff] [blame] | 303 | lhs := v.String() |
| 304 | n++ |
| 305 | n += skipSpaces(in[n:], nil) |
Fumitoshi Ukai | 7c9aa9f | 2015-06-12 23:51:38 +0900 | [diff] [blame] | 306 | v, n, err = parseExpr(in[n:], nil, false) |
Fumitoshi Ukai | b36f387 | 2015-04-10 15:06:38 +0900 | [diff] [blame] | 307 | if err != nil { |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 308 | return "", "", false, err |
Fumitoshi Ukai | b36f387 | 2015-04-10 15:06:38 +0900 | [diff] [blame] | 309 | } |
| 310 | rhs := v.String() |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 311 | return lhs, rhs, true, nil |
Fumitoshi Ukai | b36f387 | 2015-04-10 15:06:38 +0900 | [diff] [blame] | 312 | } |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 313 | args, ok, err := p.parseTwoQuotes(s, op) |
Fumitoshi Ukai | b36f387 | 2015-04-10 15:06:38 +0900 | [diff] [blame] | 314 | if !ok { |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 315 | return "", "", false, err |
Fumitoshi Ukai | e520f26 | 2015-03-31 17:27:03 +0900 | [diff] [blame] | 316 | } |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 317 | return args[0], args[1], true, nil |
Shinichiro Hamaji | af1e816 | 2015-03-31 02:15:37 +0900 | [diff] [blame] | 318 | } |
| 319 | |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 320 | func (p *parser) parseIfeq(line string, oplen int) { |
Shinichiro Hamaji | 1f47638 | 2015-04-09 14:46:04 +0900 | [diff] [blame] | 321 | op := line[:oplen] |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 322 | lhsBytes, rhsBytes, ok, err := p.parseEq(strings.TrimSpace(line[oplen+1:]), op) |
| 323 | if err != nil { |
| 324 | p.err = err |
| 325 | return |
| 326 | } |
Shinichiro Hamaji | af1e816 | 2015-03-31 02:15:37 +0900 | [diff] [blame] | 327 | if !ok { |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 328 | p.err = p.srcpos().errorf(`*** invalid syntax in conditional.`) |
| 329 | return |
Shinichiro Hamaji | af1e816 | 2015-03-31 02:15:37 +0900 | [diff] [blame] | 330 | } |
| 331 | |
Fumitoshi Ukai | 7c9aa9f | 2015-06-12 23:51:38 +0900 | [diff] [blame] | 332 | lhs, _, err := parseExpr([]byte(lhsBytes), nil, true) |
Shinichiro Hamaji | 1a68fd2 | 2015-06-04 14:46:56 +0900 | [diff] [blame] | 333 | if err != nil { |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 334 | p.err = p.srcpos().error(err) |
| 335 | return |
Shinichiro Hamaji | 1a68fd2 | 2015-06-04 14:46:56 +0900 | [diff] [blame] | 336 | } |
Fumitoshi Ukai | 7c9aa9f | 2015-06-12 23:51:38 +0900 | [diff] [blame] | 337 | rhs, _, err := parseExpr([]byte(rhsBytes), nil, true) |
Shinichiro Hamaji | 1a68fd2 | 2015-06-04 14:46:56 +0900 | [diff] [blame] | 338 | if err != nil { |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 339 | p.err = p.srcpos().error(err) |
| 340 | return |
Shinichiro Hamaji | 1a68fd2 | 2015-06-04 14:46:56 +0900 | [diff] [blame] | 341 | } |
| 342 | |
Fumitoshi Ukai | 91ed5d7 | 2015-06-25 13:08:09 +0900 | [diff] [blame] | 343 | iast := &ifAST{ |
Shinichiro Hamaji | 1f47638 | 2015-04-09 14:46:04 +0900 | [diff] [blame] | 344 | op: op, |
Shinichiro Hamaji | af1e816 | 2015-03-31 02:15:37 +0900 | [diff] [blame] | 345 | lhs: lhs, |
| 346 | rhs: rhs, |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 347 | } |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 348 | iast.srcpos = p.srcpos() |
Fumitoshi Ukai | 91ed5d7 | 2015-06-25 13:08:09 +0900 | [diff] [blame] | 349 | p.addStatement(iast) |
| 350 | p.ifStack = append(p.ifStack, ifState{ast: iast, numNest: p.numIfNest}) |
| 351 | p.outStmts = &iast.trueStmts |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 352 | return |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 353 | } |
| 354 | |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 355 | func (p *parser) checkIfStack(curKeyword string) error { |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 356 | if len(p.ifStack) == 0 { |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 357 | return p.srcpos().errorf(`*** extraneous %q.`, curKeyword) |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 358 | } |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 359 | return nil |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 360 | } |
| 361 | |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 362 | func (p *parser) parseElse(line []byte) { |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 363 | err := p.checkIfStack("else") |
| 364 | if err != nil { |
| 365 | p.err = err |
| 366 | return |
| 367 | } |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 368 | state := &p.ifStack[len(p.ifStack)-1] |
Fumitoshi Ukai | 0293c7a | 2015-03-31 16:26:53 +0900 | [diff] [blame] | 369 | if state.inElse { |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 370 | p.err = p.srcpos().errorf(`*** only one "else" per conditional.`) |
| 371 | return |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 372 | } |
Fumitoshi Ukai | 0293c7a | 2015-03-31 16:26:53 +0900 | [diff] [blame] | 373 | state.inElse = true |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 374 | p.outStmts = &state.ast.falseStmts |
Shinichiro Hamaji | a06760f | 2015-04-07 13:13:45 +0900 | [diff] [blame] | 375 | |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 376 | nextIf := trimLeftSpaceBytes(line[len("else"):]) |
Shinichiro Hamaji | a06760f | 2015-04-07 13:13:45 +0900 | [diff] [blame] | 377 | if len(nextIf) == 0 { |
| 378 | return |
| 379 | } |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 380 | var ifDirectives = map[string]directiveFunc{ |
Shinichiro Hamaji | 3fab47e | 2015-04-08 18:34:41 +0900 | [diff] [blame] | 381 | "ifdef ": ifdefDirective, |
| 382 | "ifndef ": ifndefDirective, |
| 383 | "ifeq ": ifeqDirective, |
| 384 | "ifneq ": ifneqDirective, |
Shinichiro Hamaji | a06760f | 2015-04-07 13:13:45 +0900 | [diff] [blame] | 385 | } |
| 386 | p.numIfNest = state.numNest + 1 |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 387 | if f, ok := p.isDirective(nextIf, ifDirectives); ok { |
| 388 | f(p, nextIf) |
Shinichiro Hamaji | a06760f | 2015-04-07 13:13:45 +0900 | [diff] [blame] | 389 | p.numIfNest = 0 |
| 390 | return |
| 391 | } |
| 392 | p.numIfNest = 0 |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 393 | warnNoPrefix(p.srcpos(), "extraneous text after `else` directive") |
| 394 | return |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 395 | } |
| 396 | |
| 397 | func (p *parser) parseEndif(line string) { |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 398 | err := p.checkIfStack("endif") |
| 399 | if err != nil { |
| 400 | p.err = err |
| 401 | return |
| 402 | } |
Shinichiro Hamaji | a06760f | 2015-04-07 13:13:45 +0900 | [diff] [blame] | 403 | state := p.ifStack[len(p.ifStack)-1] |
| 404 | for t := 0; t <= state.numNest; t++ { |
| 405 | p.ifStack = p.ifStack[0 : len(p.ifStack)-1] |
| 406 | if len(p.ifStack) == 0 { |
| 407 | p.outStmts = &p.mk.stmts |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 408 | } else { |
Shinichiro Hamaji | a06760f | 2015-04-07 13:13:45 +0900 | [diff] [blame] | 409 | state := p.ifStack[len(p.ifStack)-1] |
| 410 | if state.inElse { |
| 411 | p.outStmts = &state.ast.falseStmts |
| 412 | } else { |
| 413 | p.outStmts = &state.ast.trueStmts |
| 414 | } |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 415 | } |
| 416 | } |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 417 | return |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 418 | } |
| 419 | |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 420 | type directiveFunc func(*parser, []byte) []byte |
| 421 | |
| 422 | var makeDirectives = map[string]directiveFunc{ |
Fumitoshi Ukai | 8209630 | 2015-04-01 10:37:47 +0900 | [diff] [blame] | 423 | "include ": includeDirective, |
| 424 | "-include ": sincludeDirective, |
| 425 | "sinclude": sincludeDirective, |
| 426 | "ifdef ": ifdefDirective, |
| 427 | "ifndef ": ifndefDirective, |
| 428 | "ifeq ": ifeqDirective, |
| 429 | "ifneq ": ifneqDirective, |
| 430 | "else": elseDirective, |
| 431 | "endif": endifDirective, |
Fumitoshi Ukai | 3d54db8 | 2015-04-01 11:03:31 +0900 | [diff] [blame] | 432 | "define ": defineDirective, |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 433 | "override ": overrideDirective, |
| 434 | "export ": exportDirective, |
Shinichiro Hamaji | 07e76d5 | 2015-05-26 18:22:31 +0900 | [diff] [blame] | 435 | "unexport ": unexportDirective, |
Fumitoshi Ukai | 8209630 | 2015-04-01 10:37:47 +0900 | [diff] [blame] | 436 | } |
| 437 | |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 438 | // TODO(ukai): use []byte |
| 439 | func (p *parser) isDirective(line []byte, directives map[string]directiveFunc) (directiveFunc, bool) { |
| 440 | stripped := trimLeftSpaceBytes(line) |
Shinichiro Hamaji | e103f65 | 2015-04-11 19:49:51 +0900 | [diff] [blame] | 441 | // Fast paths. |
| 442 | // TODO: Consider using a trie. |
| 443 | if len(stripped) == 0 { |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 444 | return nil, false |
Shinichiro Hamaji | e103f65 | 2015-04-11 19:49:51 +0900 | [diff] [blame] | 445 | } |
Shinichiro Hamaji | 07e76d5 | 2015-05-26 18:22:31 +0900 | [diff] [blame] | 446 | if ch := stripped[0]; ch != 'i' && ch != '-' && ch != 's' && ch != 'e' && ch != 'd' && ch != 'o' && ch != 'u' { |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 447 | return nil, false |
Shinichiro Hamaji | e103f65 | 2015-04-11 19:49:51 +0900 | [diff] [blame] | 448 | } |
| 449 | |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 450 | for prefix, f := range directives { |
| 451 | if bytes.HasPrefix(stripped, []byte(prefix)) { |
| 452 | return f, true |
| 453 | } |
| 454 | if prefix[len(prefix)-1] == ' ' && bytes.HasPrefix(stripped, []byte(prefix[:len(prefix)-1])) && stripped[len(prefix)-1] == '\t' { |
| 455 | return f, true |
Shinichiro Hamaji | 74b8cb5 | 2015-04-08 19:47:43 +0900 | [diff] [blame] | 456 | } |
| 457 | } |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 458 | return nil, false |
Shinichiro Hamaji | 74b8cb5 | 2015-04-08 19:47:43 +0900 | [diff] [blame] | 459 | } |
| 460 | |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 461 | func includeDirective(p *parser, line []byte) []byte { |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 462 | p.parseInclude(string(line), len("include")) |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 463 | return nil |
Fumitoshi Ukai | 8209630 | 2015-04-01 10:37:47 +0900 | [diff] [blame] | 464 | } |
| 465 | |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 466 | func sincludeDirective(p *parser, line []byte) []byte { |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 467 | p.parseInclude(string(line), len("-include")) |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 468 | return nil |
Fumitoshi Ukai | 8209630 | 2015-04-01 10:37:47 +0900 | [diff] [blame] | 469 | } |
| 470 | |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 471 | func ifdefDirective(p *parser, line []byte) []byte { |
Shinichiro Hamaji | 61d2e11 | 2015-06-04 14:56:47 +0900 | [diff] [blame] | 472 | p.parseIfdef(line, len("ifdef")) |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 473 | return nil |
Fumitoshi Ukai | 8209630 | 2015-04-01 10:37:47 +0900 | [diff] [blame] | 474 | } |
| 475 | |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 476 | func ifndefDirective(p *parser, line []byte) []byte { |
Shinichiro Hamaji | 61d2e11 | 2015-06-04 14:56:47 +0900 | [diff] [blame] | 477 | p.parseIfdef(line, len("ifndef")) |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 478 | return nil |
Fumitoshi Ukai | 8209630 | 2015-04-01 10:37:47 +0900 | [diff] [blame] | 479 | } |
| 480 | |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 481 | func ifeqDirective(p *parser, line []byte) []byte { |
| 482 | p.parseIfeq(string(line), len("ifeq")) |
| 483 | return nil |
Fumitoshi Ukai | 8209630 | 2015-04-01 10:37:47 +0900 | [diff] [blame] | 484 | } |
| 485 | |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 486 | func ifneqDirective(p *parser, line []byte) []byte { |
| 487 | p.parseIfeq(string(line), len("ifneq")) |
| 488 | return nil |
Fumitoshi Ukai | 8209630 | 2015-04-01 10:37:47 +0900 | [diff] [blame] | 489 | } |
| 490 | |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 491 | func elseDirective(p *parser, line []byte) []byte { |
Fumitoshi Ukai | 8209630 | 2015-04-01 10:37:47 +0900 | [diff] [blame] | 492 | p.parseElse(line) |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 493 | return nil |
Fumitoshi Ukai | 8209630 | 2015-04-01 10:37:47 +0900 | [diff] [blame] | 494 | } |
| 495 | |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 496 | func endifDirective(p *parser, line []byte) []byte { |
| 497 | p.parseEndif(string(line)) |
| 498 | return nil |
Fumitoshi Ukai | 8209630 | 2015-04-01 10:37:47 +0900 | [diff] [blame] | 499 | } |
| 500 | |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 501 | func defineDirective(p *parser, line []byte) []byte { |
Shinichiro Hamaji | 72ae2dd | 2015-06-17 15:47:15 +0900 | [diff] [blame] | 502 | lhs := trimLeftSpaceBytes(line[len("define "):]) |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 503 | p.inDef = []string{string(lhs)} |
| 504 | return nil |
| 505 | } |
| 506 | |
| 507 | func overrideDirective(p *parser, line []byte) []byte { |
| 508 | p.defOpt = "override" |
| 509 | line = trimLeftSpaceBytes(line[len("override "):]) |
| 510 | defineDirective := map[string]directiveFunc{ |
| 511 | "define": defineDirective, |
| 512 | } |
| 513 | if f, ok := p.isDirective(line, defineDirective); ok { |
| 514 | f(p, line) |
| 515 | return nil |
| 516 | } |
| 517 | // e.g. overrider foo := bar |
| 518 | // line will be "foo := bar". |
| 519 | return line |
| 520 | } |
| 521 | |
Shinichiro Hamaji | ea553f3 | 2015-05-29 17:03:33 +0900 | [diff] [blame] | 522 | func handleExport(p *parser, line []byte, export bool) (hasEqual bool) { |
| 523 | equalIndex := bytes.IndexByte(line, '=') |
| 524 | if equalIndex > 0 { |
| 525 | hasEqual = true |
| 526 | switch line[equalIndex-1] { |
| 527 | case ':', '+', '?': |
| 528 | equalIndex-- |
| 529 | } |
| 530 | line = line[:equalIndex] |
| 531 | } |
| 532 | |
Fumitoshi Ukai | 91ed5d7 | 2015-06-25 13:08:09 +0900 | [diff] [blame] | 533 | east := &exportAST{ |
Shinichiro Hamaji | f61033d | 2015-05-29 15:01:48 +0900 | [diff] [blame] | 534 | expr: line, |
| 535 | export: export, |
Shinichiro Hamaji | 7e52142 | 2015-05-29 14:23:30 +0900 | [diff] [blame] | 536 | } |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 537 | east.srcpos = p.srcpos() |
Fumitoshi Ukai | 91ed5d7 | 2015-06-25 13:08:09 +0900 | [diff] [blame] | 538 | p.addStatement(east) |
Shinichiro Hamaji | ea553f3 | 2015-05-29 17:03:33 +0900 | [diff] [blame] | 539 | return hasEqual |
Shinichiro Hamaji | 7e52142 | 2015-05-29 14:23:30 +0900 | [diff] [blame] | 540 | } |
Shinichiro Hamaji | 07e76d5 | 2015-05-26 18:22:31 +0900 | [diff] [blame] | 541 | |
Shinichiro Hamaji | 7e52142 | 2015-05-29 14:23:30 +0900 | [diff] [blame] | 542 | func exportDirective(p *parser, line []byte) []byte { |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 543 | p.defOpt = "export" |
| 544 | line = trimLeftSpaceBytes(line[len("export "):]) |
| 545 | defineDirective := map[string]directiveFunc{ |
| 546 | "define": defineDirective, |
| 547 | } |
| 548 | if f, ok := p.isDirective(line, defineDirective); ok { |
| 549 | f(p, line) |
| 550 | return nil |
| 551 | } |
Shinichiro Hamaji | 07e76d5 | 2015-05-26 18:22:31 +0900 | [diff] [blame] | 552 | |
Shinichiro Hamaji | ea553f3 | 2015-05-29 17:03:33 +0900 | [diff] [blame] | 553 | if !handleExport(p, line, true) { |
Shinichiro Hamaji | 07e76d5 | 2015-05-26 18:22:31 +0900 | [diff] [blame] | 554 | return nil |
| 555 | } |
| 556 | |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 557 | // e.g. export foo := bar |
| 558 | // line will be "foo := bar". |
| 559 | return line |
Fumitoshi Ukai | 3d54db8 | 2015-04-01 11:03:31 +0900 | [diff] [blame] | 560 | } |
| 561 | |
Shinichiro Hamaji | 07e76d5 | 2015-05-26 18:22:31 +0900 | [diff] [blame] | 562 | func unexportDirective(p *parser, line []byte) []byte { |
Shinichiro Hamaji | 7e52142 | 2015-05-29 14:23:30 +0900 | [diff] [blame] | 563 | handleExport(p, line[len("unexport "):], false) |
Shinichiro Hamaji | 07e76d5 | 2015-05-26 18:22:31 +0900 | [diff] [blame] | 564 | return nil |
| 565 | } |
| 566 | |
Shinichiro Hamaji | ca66857 | 2015-06-17 06:36:45 +0900 | [diff] [blame] | 567 | func (p *parser) isEndef(s string) bool { |
| 568 | if s == "endef" { |
| 569 | return true |
| 570 | } |
| 571 | found := strings.IndexAny(s, " \t") |
| 572 | if found >= 0 && s[:found] == "endef" { |
| 573 | rest := strings.TrimSpace(s[found+1:]) |
| 574 | if rest != "" && rest[0] != '#' { |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 575 | warnNoPrefix(p.srcpos(), "extraneous text after \"endef\" directive") |
Shinichiro Hamaji | ca66857 | 2015-06-17 06:36:45 +0900 | [diff] [blame] | 576 | } |
| 577 | return true |
| 578 | } |
| 579 | return false |
| 580 | } |
| 581 | |
Fumitoshi Ukai | 08eda65 | 2015-06-25 16:27:10 +0900 | [diff] [blame] | 582 | func (p *parser) parse() (mk makefile, err error) { |
Shinichiro Hamaji | e184158 | 2015-03-30 17:20:33 +0900 | [diff] [blame] | 583 | for !p.done { |
Shinichiro Hamaji | 0b93c86 | 2015-04-07 06:15:15 +0900 | [diff] [blame] | 584 | line := p.readLine() |
Shinichiro Hamaji | e184158 | 2015-03-30 17:20:33 +0900 | [diff] [blame] | 585 | |
Fumitoshi Ukai | 3d54db8 | 2015-04-01 11:03:31 +0900 | [diff] [blame] | 586 | if len(p.inDef) > 0 { |
Shinichiro Hamaji | ca66857 | 2015-06-17 06:36:45 +0900 | [diff] [blame] | 587 | lineStr := string(p.processDefineLine(line)) |
| 588 | if p.isEndef(lineStr) { |
Fumitoshi Ukai | 07cf121 | 2015-06-25 17:16:25 +0900 | [diff] [blame] | 589 | logf("multilineAssign %q", p.inDef) |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 590 | aast, err := newAssignAST(p, []byte(p.inDef[0]), []byte(strings.Join(p.inDef[1:], "\n")), "=") |
| 591 | if err != nil { |
| 592 | return makefile{}, err |
| 593 | } |
| 594 | aast.srcpos = p.srcpos() |
| 595 | aast.srcpos.lineno -= len(p.inDef) |
Fumitoshi Ukai | 91ed5d7 | 2015-06-25 13:08:09 +0900 | [diff] [blame] | 596 | p.addStatement(aast) |
Fumitoshi Ukai | 3d54db8 | 2015-04-01 11:03:31 +0900 | [diff] [blame] | 597 | p.inDef = nil |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 598 | p.defOpt = "" |
Fumitoshi Ukai | 3d54db8 | 2015-04-01 11:03:31 +0900 | [diff] [blame] | 599 | continue |
| 600 | } |
Shinichiro Hamaji | ca66857 | 2015-06-17 06:36:45 +0900 | [diff] [blame] | 601 | p.inDef = append(p.inDef, lineStr) |
Fumitoshi Ukai | 3d54db8 | 2015-04-01 11:03:31 +0900 | [diff] [blame] | 602 | continue |
| 603 | } |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 604 | p.defOpt = "" |
Fumitoshi Ukai | 3d54db8 | 2015-04-01 11:03:31 +0900 | [diff] [blame] | 605 | |
Shinichiro Hamaji | 960161f | 2015-04-13 17:10:10 +0900 | [diff] [blame] | 606 | if len(bytes.TrimSpace(line)) == 0 { |
| 607 | continue |
| 608 | } |
| 609 | |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 610 | if f, ok := p.isDirective(line, makeDirectives); ok { |
Shinichiro Hamaji | 72ae2dd | 2015-06-17 15:47:15 +0900 | [diff] [blame] | 611 | line = trimSpaceBytes(p.processMakefileLine(line)) |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 612 | line = f(p, line) |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 613 | if p.err != nil { |
| 614 | return makefile{}, p.err |
| 615 | } |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 616 | if len(line) == 0 { |
| 617 | continue |
| 618 | } |
Shinichiro Hamaji | 74b8cb5 | 2015-04-08 19:47:43 +0900 | [diff] [blame] | 619 | } |
Shinichiro Hamaji | 0b93c86 | 2015-04-07 06:15:15 +0900 | [diff] [blame] | 620 | if line[0] == '\t' { |
Fumitoshi Ukai | 91ed5d7 | 2015-06-25 13:08:09 +0900 | [diff] [blame] | 621 | cast := &commandAST{cmd: string(p.processRecipeLine(line[1:]))} |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 622 | cast.srcpos = p.srcpos() |
Fumitoshi Ukai | 91ed5d7 | 2015-06-25 13:08:09 +0900 | [diff] [blame] | 623 | p.addStatement(cast) |
Shinichiro Hamaji | 0b93c86 | 2015-04-07 06:15:15 +0900 | [diff] [blame] | 624 | continue |
| 625 | } |
| 626 | |
| 627 | line = p.processMakefileLine(line) |
Shinichiro Hamaji | a66a179 | 2015-03-31 18:04:08 +0900 | [diff] [blame] | 628 | |
Fumitoshi Ukai | 91ed5d7 | 2015-06-25 13:08:09 +0900 | [diff] [blame] | 629 | var stmt ast |
Shinichiro Hamaji | 34e2324 | 2015-04-06 15:44:50 +0900 | [diff] [blame] | 630 | var parenStack []byte |
Shinichiro Hamaji | e12e24d | 2015-04-11 23:09:20 +0900 | [diff] [blame] | 631 | equalIndex := -1 |
Shinichiro Hamaji | 3fab47e | 2015-04-08 18:34:41 +0900 | [diff] [blame] | 632 | semicolonIndex := -1 |
| 633 | isRule := false |
Shinichiro Hamaji | e184158 | 2015-03-30 17:20:33 +0900 | [diff] [blame] | 634 | for i, ch := range line { |
| 635 | switch ch { |
Shinichiro Hamaji | 34e2324 | 2015-04-06 15:44:50 +0900 | [diff] [blame] | 636 | case '(', '{': |
| 637 | parenStack = append(parenStack, ch) |
| 638 | case ')', '}': |
| 639 | if len(parenStack) == 0 { |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 640 | warn(p.srcpos(), "Unmatched parens: %s", line) |
Shinichiro Hamaji | 34e2324 | 2015-04-06 15:44:50 +0900 | [diff] [blame] | 641 | } else { |
Shinichiro Hamaji | f863d86 | 2015-06-17 16:48:37 +0900 | [diff] [blame] | 642 | cp := closeParen(parenStack[len(parenStack)-1]) |
| 643 | if cp == ch { |
| 644 | parenStack = parenStack[:len(parenStack)-1] |
| 645 | } |
Shinichiro Hamaji | 34e2324 | 2015-04-06 15:44:50 +0900 | [diff] [blame] | 646 | } |
| 647 | } |
| 648 | if len(parenStack) > 0 { |
| 649 | continue |
| 650 | } |
| 651 | |
| 652 | switch ch { |
Shinichiro Hamaji | e184158 | 2015-03-30 17:20:33 +0900 | [diff] [blame] | 653 | case ':': |
Shinichiro Hamaji | 7f1ede3 | 2015-03-30 18:05:22 +0900 | [diff] [blame] | 654 | if i+1 < len(line) && line[i+1] == '=' { |
Shinichiro Hamaji | 156ef3e | 2015-04-11 22:44:41 +0900 | [diff] [blame] | 655 | if !isRule { |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 656 | stmt, err = p.parseAssign(line, i, i+2) |
| 657 | if err != nil { |
| 658 | return makefile{}, err |
| 659 | } |
Shinichiro Hamaji | 156ef3e | 2015-04-11 22:44:41 +0900 | [diff] [blame] | 660 | } |
Shinichiro Hamaji | 7f1ede3 | 2015-03-30 18:05:22 +0900 | [diff] [blame] | 661 | } else { |
Shinichiro Hamaji | 3fab47e | 2015-04-08 18:34:41 +0900 | [diff] [blame] | 662 | isRule = true |
Shinichiro Hamaji | e184158 | 2015-03-30 17:20:33 +0900 | [diff] [blame] | 663 | } |
Shinichiro Hamaji | 3fab47e | 2015-04-08 18:34:41 +0900 | [diff] [blame] | 664 | case ';': |
Shinichiro Hamaji | e12e24d | 2015-04-11 23:09:20 +0900 | [diff] [blame] | 665 | if semicolonIndex < 0 { |
| 666 | semicolonIndex = i |
| 667 | } |
Shinichiro Hamaji | e184158 | 2015-03-30 17:20:33 +0900 | [diff] [blame] | 668 | case '=': |
Shinichiro Hamaji | 3fab47e | 2015-04-08 18:34:41 +0900 | [diff] [blame] | 669 | if !isRule { |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 670 | stmt, err = p.parseAssign(line, i, i+1) |
| 671 | if err != nil { |
| 672 | return makefile{}, err |
| 673 | } |
Shinichiro Hamaji | 3fab47e | 2015-04-08 18:34:41 +0900 | [diff] [blame] | 674 | } |
Shinichiro Hamaji | e12e24d | 2015-04-11 23:09:20 +0900 | [diff] [blame] | 675 | if equalIndex < 0 { |
| 676 | equalIndex = i |
| 677 | } |
Shinichiro Hamaji | 69b7f65 | 2015-03-31 01:01:59 +0900 | [diff] [blame] | 678 | case '?', '+': |
Shinichiro Hamaji | 3fab47e | 2015-04-08 18:34:41 +0900 | [diff] [blame] | 679 | if !isRule && i+1 < len(line) && line[i+1] == '=' { |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 680 | stmt, err = p.parseAssign(line, i, i+2) |
| 681 | if err != nil { |
| 682 | return makefile{}, err |
| 683 | } |
Shinichiro Hamaji | 69b7f65 | 2015-03-31 01:01:59 +0900 | [diff] [blame] | 684 | } |
Shinichiro Hamaji | e184158 | 2015-03-30 17:20:33 +0900 | [diff] [blame] | 685 | } |
Fumitoshi Ukai | 91ed5d7 | 2015-06-25 13:08:09 +0900 | [diff] [blame] | 686 | if stmt != nil { |
| 687 | p.addStatement(stmt) |
Shinichiro Hamaji | 7f1ede3 | 2015-03-30 18:05:22 +0900 | [diff] [blame] | 688 | break |
| 689 | } |
Fumitoshi Ukai | 119dc91 | 2015-03-30 16:52:41 +0900 | [diff] [blame] | 690 | } |
Fumitoshi Ukai | 91ed5d7 | 2015-06-25 13:08:09 +0900 | [diff] [blame] | 691 | if stmt == nil { |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 692 | stmt, err = p.parseMaybeRule(line, equalIndex, semicolonIndex) |
| 693 | if err != nil { |
| 694 | return makefile{}, err |
| 695 | } |
Fumitoshi Ukai | 91ed5d7 | 2015-06-25 13:08:09 +0900 | [diff] [blame] | 696 | if stmt != nil { |
| 697 | p.addStatement(stmt) |
Shinichiro Hamaji | de82971 | 2015-03-31 18:26:56 +0900 | [diff] [blame] | 698 | } |
Shinichiro Hamaji | 685fecf | 2015-03-30 18:28:12 +0900 | [diff] [blame] | 699 | } |
Fumitoshi Ukai | 119dc91 | 2015-03-30 16:52:41 +0900 | [diff] [blame] | 700 | } |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 701 | return p.mk, p.err |
Fumitoshi Ukai | 119dc91 | 2015-03-30 16:52:41 +0900 | [diff] [blame] | 702 | } |
| 703 | |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 704 | func defaultMakefile() (string, error) { |
Shinichiro Hamaji | b0d2e2f | 2015-05-20 16:42:59 +0900 | [diff] [blame] | 705 | candidates := []string{"GNUmakefile", "makefile", "Makefile"} |
| 706 | for _, filename := range candidates { |
| 707 | if exists(filename) { |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 708 | return filename, nil |
Shinichiro Hamaji | b0d2e2f | 2015-05-20 16:42:59 +0900 | [diff] [blame] | 709 | } |
| 710 | } |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 711 | return "", errors.New("no targets specified and no makefile found") |
Shinichiro Hamaji | b0d2e2f | 2015-05-20 16:42:59 +0900 | [diff] [blame] | 712 | } |
| 713 | |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 714 | func parseMakefileReader(rd io.Reader, loc srcpos) (makefile, error) { |
| 715 | parser := newParser(rd, loc.filename) |
| 716 | parser.lineno = loc.lineno |
| 717 | parser.elineno = loc.lineno |
Shinichiro Hamaji | 370be72 | 2015-04-10 14:55:23 +0900 | [diff] [blame] | 718 | parser.linenoFixed = true |
Shinichiro Hamaji | a5dee37 | 2015-04-03 16:41:30 +0900 | [diff] [blame] | 719 | return parser.parse() |
Shinichiro Hamaji | c384081 | 2015-04-02 02:10:20 +0900 | [diff] [blame] | 720 | } |
Shinichiro Hamaji | 28ea5bc | 2015-04-11 12:41:08 +0900 | [diff] [blame] | 721 | |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 722 | func parseMakefileString(s string, loc srcpos) (makefile, error) { |
| 723 | return parseMakefileReader(strings.NewReader(s), loc) |
Shinichiro Hamaji | 28ea5bc | 2015-04-11 12:41:08 +0900 | [diff] [blame] | 724 | } |
| 725 | |
Fumitoshi Ukai | 65c7233 | 2015-06-26 21:32:50 +0900 | [diff] [blame^] | 726 | func parseMakefileBytes(s []byte, loc srcpos) (makefile, error) { |
| 727 | return parseMakefileReader(bytes.NewReader(s), loc) |
Shinichiro Hamaji | 28ea5bc | 2015-04-11 12:41:08 +0900 | [diff] [blame] | 728 | } |
Shinichiro Hamaji | 45cde1d | 2015-05-25 18:21:23 +0900 | [diff] [blame] | 729 | |
Fumitoshi Ukai | 9042b99 | 2015-06-23 16:10:27 +0900 | [diff] [blame] | 730 | type mkCacheEntry struct { |
Fumitoshi Ukai | 08eda65 | 2015-06-25 16:27:10 +0900 | [diff] [blame] | 731 | mk makefile |
Fumitoshi Ukai | 9042b99 | 2015-06-23 16:10:27 +0900 | [diff] [blame] | 732 | hash [sha1.Size]byte |
| 733 | err error |
| 734 | ts int64 |
Shinichiro Hamaji | 584bb06 | 2015-06-04 13:25:13 +0900 | [diff] [blame] | 735 | } |
| 736 | |
Fumitoshi Ukai | 9042b99 | 2015-06-23 16:10:27 +0900 | [diff] [blame] | 737 | type makefileCacheT struct { |
| 738 | mu sync.Mutex |
| 739 | mk map[string]mkCacheEntry |
Shinichiro Hamaji | 584bb06 | 2015-06-04 13:25:13 +0900 | [diff] [blame] | 740 | } |
| 741 | |
Fumitoshi Ukai | 9042b99 | 2015-06-23 16:10:27 +0900 | [diff] [blame] | 742 | var makefileCache = &makefileCacheT{ |
| 743 | mk: make(map[string]mkCacheEntry), |
| 744 | } |
| 745 | |
Fumitoshi Ukai | 08eda65 | 2015-06-25 16:27:10 +0900 | [diff] [blame] | 746 | func (mc *makefileCacheT) lookup(filename string) (makefile, [sha1.Size]byte, bool, error) { |
Fumitoshi Ukai | 9042b99 | 2015-06-23 16:10:27 +0900 | [diff] [blame] | 747 | var hash [sha1.Size]byte |
| 748 | mc.mu.Lock() |
| 749 | c, present := mc.mk[filename] |
| 750 | mc.mu.Unlock() |
Shinichiro Hamaji | 584bb06 | 2015-06-04 13:25:13 +0900 | [diff] [blame] | 751 | if !present { |
Fumitoshi Ukai | 08eda65 | 2015-06-25 16:27:10 +0900 | [diff] [blame] | 752 | return makefile{}, hash, false, nil |
Shinichiro Hamaji | 584bb06 | 2015-06-04 13:25:13 +0900 | [diff] [blame] | 753 | } |
| 754 | ts := getTimestamp(filename) |
| 755 | if ts < 0 || ts >= c.ts { |
Fumitoshi Ukai | 08eda65 | 2015-06-25 16:27:10 +0900 | [diff] [blame] | 756 | return makefile{}, hash, false, nil |
Shinichiro Hamaji | 584bb06 | 2015-06-04 13:25:13 +0900 | [diff] [blame] | 757 | } |
Fumitoshi Ukai | 9042b99 | 2015-06-23 16:10:27 +0900 | [diff] [blame] | 758 | return c.mk, c.hash, true, c.err |
| 759 | } |
| 760 | |
Fumitoshi Ukai | 08eda65 | 2015-06-25 16:27:10 +0900 | [diff] [blame] | 761 | func (mc *makefileCacheT) parse(filename string) (makefile, [sha1.Size]byte, error) { |
Fumitoshi Ukai | 07cf121 | 2015-06-25 17:16:25 +0900 | [diff] [blame] | 762 | logf("parse Makefile %q", filename) |
Fumitoshi Ukai | 9042b99 | 2015-06-23 16:10:27 +0900 | [diff] [blame] | 763 | mk, hash, ok, err := makefileCache.lookup(filename) |
| 764 | if ok { |
Fumitoshi Ukai | 744bb2b | 2015-06-25 00:10:52 +0900 | [diff] [blame] | 765 | if LogFlag { |
Fumitoshi Ukai | 07cf121 | 2015-06-25 17:16:25 +0900 | [diff] [blame] | 766 | logf("makefile cache hit for %q", filename) |
Fumitoshi Ukai | 9042b99 | 2015-06-23 16:10:27 +0900 | [diff] [blame] | 767 | } |
| 768 | return mk, hash, err |
| 769 | } |
Fumitoshi Ukai | 744bb2b | 2015-06-25 00:10:52 +0900 | [diff] [blame] | 770 | if LogFlag { |
Fumitoshi Ukai | 07cf121 | 2015-06-25 17:16:25 +0900 | [diff] [blame] | 771 | logf("reading makefile %q", filename) |
Fumitoshi Ukai | 9042b99 | 2015-06-23 16:10:27 +0900 | [diff] [blame] | 772 | } |
| 773 | c, err := ioutil.ReadFile(filename) |
| 774 | if err != nil { |
Fumitoshi Ukai | 08eda65 | 2015-06-25 16:27:10 +0900 | [diff] [blame] | 775 | return makefile{}, hash, err |
Fumitoshi Ukai | 9042b99 | 2015-06-23 16:10:27 +0900 | [diff] [blame] | 776 | } |
| 777 | hash = sha1.Sum(c) |
Fumitoshi Ukai | 08eda65 | 2015-06-25 16:27:10 +0900 | [diff] [blame] | 778 | mk, err = parseMakefile(c, filename) |
Fumitoshi Ukai | 9042b99 | 2015-06-23 16:10:27 +0900 | [diff] [blame] | 779 | if err != nil { |
Fumitoshi Ukai | 08eda65 | 2015-06-25 16:27:10 +0900 | [diff] [blame] | 780 | return makefile{}, hash, err |
Fumitoshi Ukai | 9042b99 | 2015-06-23 16:10:27 +0900 | [diff] [blame] | 781 | } |
| 782 | makefileCache.mu.Lock() |
| 783 | makefileCache.mk[filename] = mkCacheEntry{ |
| 784 | mk: mk, |
| 785 | hash: hash, |
| 786 | err: err, |
| 787 | ts: time.Now().Unix(), |
| 788 | } |
| 789 | makefileCache.mu.Unlock() |
| 790 | return mk, hash, err |
Shinichiro Hamaji | 584bb06 | 2015-06-04 13:25:13 +0900 | [diff] [blame] | 791 | } |
| 792 | |
Fumitoshi Ukai | 08eda65 | 2015-06-25 16:27:10 +0900 | [diff] [blame] | 793 | func parseMakefile(s []byte, filename string) (makefile, error) { |
Shinichiro Hamaji | 45cde1d | 2015-05-25 18:21:23 +0900 | [diff] [blame] | 794 | parser := newParser(bytes.NewReader(s), filename) |
Fumitoshi Ukai | 9042b99 | 2015-06-23 16:10:27 +0900 | [diff] [blame] | 795 | return parser.parse() |
Shinichiro Hamaji | 45cde1d | 2015-05-25 18:21:23 +0900 | [diff] [blame] | 796 | } |