Fumitoshi Ukai | 119dc91 | 2015-03-30 16:52:41 +0900 | [diff] [blame] | 1 | package main |
| 2 | |
Fumitoshi Ukai | 0aa4fc4 | 2015-04-10 17:00:19 +0900 | [diff] [blame] | 3 | //go:generate go run testcase/gen_testcase_parse_benchmark.go |
| 4 | // |
| 5 | // $ go generate |
| 6 | // $ go test -bench . |
| 7 | |
Fumitoshi Ukai | 119dc91 | 2015-03-30 16:52:41 +0900 | [diff] [blame] | 8 | import ( |
| 9 | "bufio" |
Shinichiro Hamaji | e184158 | 2015-03-30 17:20:33 +0900 | [diff] [blame] | 10 | "bytes" |
Fumitoshi Ukai | f8efa0a | 2015-03-30 18:10:11 +0900 | [diff] [blame] | 11 | "fmt" |
Fumitoshi Ukai | 119dc91 | 2015-03-30 16:52:41 +0900 | [diff] [blame] | 12 | "io" |
| 13 | "os" |
Shinichiro Hamaji | d7bef60 | 2015-03-30 19:55:32 +0900 | [diff] [blame] | 14 | "strings" |
Fumitoshi Ukai | 119dc91 | 2015-03-30 16:52:41 +0900 | [diff] [blame] | 15 | ) |
| 16 | |
| 17 | type Makefile struct { |
Shinichiro Hamaji | 491e73f | 2015-04-07 12:41:59 +0900 | [diff] [blame] | 18 | filename string |
| 19 | stmts []AST |
Fumitoshi Ukai | 119dc91 | 2015-03-30 16:52:41 +0900 | [diff] [blame] | 20 | } |
| 21 | |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 22 | type ifState struct { |
Shinichiro Hamaji | a06760f | 2015-04-07 13:13:45 +0900 | [diff] [blame] | 23 | ast *IfAST |
| 24 | inElse bool |
| 25 | numNest int |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 26 | } |
| 27 | |
Fumitoshi Ukai | 119dc91 | 2015-03-30 16:52:41 +0900 | [diff] [blame] | 28 | type parser struct { |
Shinichiro Hamaji | 370be72 | 2015-04-10 14:55:23 +0900 | [diff] [blame] | 29 | rd *bufio.Reader |
| 30 | mk Makefile |
| 31 | lineno int |
| 32 | elineno int // lineno == elineno unless there is trailing '\'. |
| 33 | linenoFixed bool |
| 34 | unBuf []byte |
| 35 | hasUnBuf bool |
| 36 | done bool |
| 37 | outStmts *[]AST |
| 38 | ifStack []ifState |
| 39 | inDef []string |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 40 | defOpt string |
Shinichiro Hamaji | 370be72 | 2015-04-10 14:55:23 +0900 | [diff] [blame] | 41 | numIfNest int |
Fumitoshi Ukai | 119dc91 | 2015-03-30 16:52:41 +0900 | [diff] [blame] | 42 | } |
| 43 | |
Shinichiro Hamaji | 685fecf | 2015-03-30 18:28:12 +0900 | [diff] [blame] | 44 | func newParser(rd io.Reader, filename string) *parser { |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 45 | p := &parser{ |
Shinichiro Hamaji | 3fab47e | 2015-04-08 18:34:41 +0900 | [diff] [blame] | 46 | rd: bufio.NewReader(rd), |
Fumitoshi Ukai | 119dc91 | 2015-03-30 16:52:41 +0900 | [diff] [blame] | 47 | } |
Shinichiro Hamaji | 491e73f | 2015-04-07 12:41:59 +0900 | [diff] [blame] | 48 | p.mk.filename = filename |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 49 | p.outStmts = &p.mk.stmts |
| 50 | return p |
| 51 | } |
| 52 | |
Shinichiro Hamaji | ae32b78 | 2015-03-31 14:41:19 +0900 | [diff] [blame] | 53 | func (p *parser) addStatement(ast AST) { |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 54 | *p.outStmts = append(*p.outStmts, ast) |
Fumitoshi Ukai | 119dc91 | 2015-03-30 16:52:41 +0900 | [diff] [blame] | 55 | } |
| 56 | |
Shinichiro Hamaji | e184158 | 2015-03-30 17:20:33 +0900 | [diff] [blame] | 57 | func (p *parser) readLine() []byte { |
Fumitoshi Ukai | cf2b038 | 2015-03-30 17:48:54 +0900 | [diff] [blame] | 58 | if p.hasUnBuf { |
| 59 | p.hasUnBuf = false |
| 60 | return p.unBuf |
Shinichiro Hamaji | e184158 | 2015-03-30 17:20:33 +0900 | [diff] [blame] | 61 | } |
| 62 | |
Shinichiro Hamaji | 370be72 | 2015-04-10 14:55:23 +0900 | [diff] [blame] | 63 | if !p.linenoFixed { |
| 64 | p.lineno = p.elineno |
| 65 | } |
Shinichiro Hamaji | e184158 | 2015-03-30 17:20:33 +0900 | [diff] [blame] | 66 | line, err := p.rd.ReadBytes('\n') |
Shinichiro Hamaji | 370be72 | 2015-04-10 14:55:23 +0900 | [diff] [blame] | 67 | if !p.linenoFixed { |
| 68 | p.lineno++ |
| 69 | p.elineno = p.lineno |
| 70 | } |
Shinichiro Hamaji | e184158 | 2015-03-30 17:20:33 +0900 | [diff] [blame] | 71 | if err == io.EOF { |
| 72 | p.done = true |
| 73 | } else if err != nil { |
Fumitoshi Ukai | a9e5136 | 2015-04-17 10:26:00 +0900 | [diff] [blame] | 74 | panic(fmt.Errorf("readline %s:%d: %v", p.mk.filename, p.lineno, err)) |
Shinichiro Hamaji | e184158 | 2015-03-30 17:20:33 +0900 | [diff] [blame] | 75 | } |
| 76 | |
Shinichiro Hamaji | 56c868c | 2015-04-09 10:17:10 +0900 | [diff] [blame] | 77 | line = bytes.TrimRight(line, "\r\n") |
Shinichiro Hamaji | e184158 | 2015-03-30 17:20:33 +0900 | [diff] [blame] | 78 | |
Shinichiro Hamaji | 52e83aa | 2015-04-06 17:20:28 +0900 | [diff] [blame] | 79 | return line |
| 80 | } |
| 81 | |
| 82 | func removeComment(line []byte) []byte { |
| 83 | var parenStack []byte |
Shinichiro Hamaji | f4d3ee5 | 2015-04-22 16:19:33 +0900 | [diff] [blame] | 84 | // Do not use range as we may modify |line| and |i|. |
| 85 | for i := 0; i < len(line); i++ { |
| 86 | ch := line[i] |
Shinichiro Hamaji | 52e83aa | 2015-04-06 17:20:28 +0900 | [diff] [blame] | 87 | switch ch { |
| 88 | case '(', '{': |
| 89 | parenStack = append(parenStack, ch) |
| 90 | case ')', '}': |
| 91 | if len(parenStack) > 0 { |
| 92 | parenStack = parenStack[:len(parenStack)-1] |
| 93 | } |
| 94 | case '#': |
| 95 | if len(parenStack) == 0 { |
Shinichiro Hamaji | f4d3ee5 | 2015-04-22 16:19:33 +0900 | [diff] [blame] | 96 | if i == 0 || line[i-1] != '\\' { |
| 97 | return line[:i] |
| 98 | } |
| 99 | // Drop the backslash before '#'. |
| 100 | line = append(line[:i-1], line[i:]...) |
| 101 | i-- |
Shinichiro Hamaji | 52e83aa | 2015-04-06 17:20:28 +0900 | [diff] [blame] | 102 | } |
| 103 | } |
| 104 | } |
| 105 | return line |
| 106 | } |
| 107 | |
Shinichiro Hamaji | e2f6e90 | 2015-04-22 16:08:47 +0900 | [diff] [blame] | 108 | func hasTrailingBackslash(line []byte) bool { |
| 109 | if len(line) == 0 { |
| 110 | return false |
| 111 | } |
| 112 | if line[len(line)-1] != '\\' { |
| 113 | return false |
| 114 | } |
| 115 | return len(line) <= 1 || line[len(line)-2] != '\\' |
| 116 | } |
| 117 | |
Shinichiro Hamaji | e52c16c | 2015-04-11 23:41:39 +0900 | [diff] [blame] | 118 | func (p *parser) processDefineLine(line []byte) []byte { |
Shinichiro Hamaji | e2f6e90 | 2015-04-22 16:08:47 +0900 | [diff] [blame] | 119 | for hasTrailingBackslash(line) { |
Shinichiro Hamaji | e184158 | 2015-03-30 17:20:33 +0900 | [diff] [blame] | 120 | line = line[:len(line)-1] |
Shinichiro Hamaji | c4c9810 | 2015-04-12 03:56:00 +0900 | [diff] [blame] | 121 | line = bytes.TrimRight(line, "\t ") |
Shinichiro Hamaji | 3e4533d | 2015-04-06 14:03:58 +0900 | [diff] [blame] | 122 | lineno := p.lineno |
Shinichiro Hamaji | c4c9810 | 2015-04-12 03:56:00 +0900 | [diff] [blame] | 123 | nline := trimLeftSpaceBytes(p.readLine()) |
Shinichiro Hamaji | 3e4533d | 2015-04-06 14:03:58 +0900 | [diff] [blame] | 124 | p.lineno = lineno |
Shinichiro Hamaji | c4c9810 | 2015-04-12 03:56:00 +0900 | [diff] [blame] | 125 | line = append(line, ' ') |
Shinichiro Hamaji | e184158 | 2015-03-30 17:20:33 +0900 | [diff] [blame] | 126 | line = append(line, nline...) |
| 127 | } |
Shinichiro Hamaji | e52c16c | 2015-04-11 23:41:39 +0900 | [diff] [blame] | 128 | return line |
| 129 | } |
| 130 | |
| 131 | func (p *parser) processMakefileLine(line []byte) []byte { |
| 132 | return removeComment(p.processDefineLine(line)) |
Shinichiro Hamaji | 52e83aa | 2015-04-06 17:20:28 +0900 | [diff] [blame] | 133 | } |
Shinichiro Hamaji | e184158 | 2015-03-30 17:20:33 +0900 | [diff] [blame] | 134 | |
Shinichiro Hamaji | 0b93c86 | 2015-04-07 06:15:15 +0900 | [diff] [blame] | 135 | func (p *parser) processRecipeLine(line []byte) []byte { |
Shinichiro Hamaji | e2f6e90 | 2015-04-22 16:08:47 +0900 | [diff] [blame] | 136 | for hasTrailingBackslash(line) { |
Shinichiro Hamaji | 52e83aa | 2015-04-06 17:20:28 +0900 | [diff] [blame] | 137 | line = append(line, '\n') |
| 138 | lineno := p.lineno |
| 139 | nline := p.readLine() |
| 140 | p.lineno = lineno |
| 141 | line = append(line, nline...) |
Shinichiro Hamaji | e184158 | 2015-03-30 17:20:33 +0900 | [diff] [blame] | 142 | } |
Shinichiro Hamaji | e184158 | 2015-03-30 17:20:33 +0900 | [diff] [blame] | 143 | return line |
| 144 | } |
| 145 | |
| 146 | func (p *parser) unreadLine(line []byte) { |
Fumitoshi Ukai | cf2b038 | 2015-03-30 17:48:54 +0900 | [diff] [blame] | 147 | if p.hasUnBuf { |
Shinichiro Hamaji | e184158 | 2015-03-30 17:20:33 +0900 | [diff] [blame] | 148 | panic("unreadLine twice!") |
| 149 | } |
Fumitoshi Ukai | cf2b038 | 2015-03-30 17:48:54 +0900 | [diff] [blame] | 150 | p.unBuf = line |
| 151 | p.hasUnBuf = true |
Shinichiro Hamaji | e184158 | 2015-03-30 17:20:33 +0900 | [diff] [blame] | 152 | } |
| 153 | |
Fumitoshi Ukai | e1b813c | 2015-03-30 18:38:21 +0900 | [diff] [blame] | 154 | func (p *parser) parseAssign(line []byte, sep, esep int) AST { |
Fumitoshi Ukai | 8773e5e | 2015-04-01 11:23:18 +0900 | [diff] [blame] | 155 | Log("parseAssign %q op:%q", line, line[sep:esep]) |
Fumitoshi Ukai | b36f387 | 2015-04-10 15:06:38 +0900 | [diff] [blame] | 156 | // TODO(ukai): parse expr here. |
Fumitoshi Ukai | e1b813c | 2015-03-30 18:38:21 +0900 | [diff] [blame] | 157 | ast := &AssignAST{ |
| 158 | lhs: string(bytes.TrimSpace(line[:sep])), |
Shinichiro Hamaji | c88618f | 2015-04-11 19:58:06 +0900 | [diff] [blame] | 159 | rhs: trimLeftSpace(string(line[esep:])), |
Fumitoshi Ukai | e1b813c | 2015-03-30 18:38:21 +0900 | [diff] [blame] | 160 | op: string(line[sep:esep]), |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 161 | opt: p.defOpt, |
Shinichiro Hamaji | 7f1ede3 | 2015-03-30 18:05:22 +0900 | [diff] [blame] | 162 | } |
Shinichiro Hamaji | 491e73f | 2015-04-07 12:41:59 +0900 | [diff] [blame] | 163 | ast.filename = p.mk.filename |
Fumitoshi Ukai | 119dc91 | 2015-03-30 16:52:41 +0900 | [diff] [blame] | 164 | ast.lineno = p.lineno |
Fumitoshi Ukai | 119dc91 | 2015-03-30 16:52:41 +0900 | [diff] [blame] | 165 | return ast |
| 166 | } |
| 167 | |
Shinichiro Hamaji | e12e24d | 2015-04-11 23:09:20 +0900 | [diff] [blame] | 168 | func (p *parser) parseMaybeRule(line string, equalIndex, semicolonIndex int) AST { |
Shinichiro Hamaji | de82971 | 2015-03-31 18:26:56 +0900 | [diff] [blame] | 169 | if len(strings.TrimSpace(line)) == 0 { |
| 170 | return nil |
| 171 | } |
Shinichiro Hamaji | de82971 | 2015-03-31 18:26:56 +0900 | [diff] [blame] | 172 | |
Shinichiro Hamaji | e12e24d | 2015-04-11 23:09:20 +0900 | [diff] [blame] | 173 | // Either '=' or ';' is used. |
| 174 | if equalIndex >= 0 && semicolonIndex >= 0 { |
| 175 | if equalIndex < semicolonIndex { |
| 176 | semicolonIndex = -1 |
| 177 | } else { |
| 178 | equalIndex = -1 |
| 179 | } |
| 180 | } |
| 181 | |
Shinichiro Hamaji | 486e9de | 2015-04-09 15:20:32 +0900 | [diff] [blame] | 182 | ast := &MaybeRuleAST{ |
| 183 | expr: line, |
Shinichiro Hamaji | e12e24d | 2015-04-11 23:09:20 +0900 | [diff] [blame] | 184 | equalIndex: equalIndex, |
Shinichiro Hamaji | 486e9de | 2015-04-09 15:20:32 +0900 | [diff] [blame] | 185 | semicolonIndex: semicolonIndex, |
Shinichiro Hamaji | 7f1ede3 | 2015-03-30 18:05:22 +0900 | [diff] [blame] | 186 | } |
Shinichiro Hamaji | 491e73f | 2015-04-07 12:41:59 +0900 | [diff] [blame] | 187 | ast.filename = p.mk.filename |
Fumitoshi Ukai | 119dc91 | 2015-03-30 16:52:41 +0900 | [diff] [blame] | 188 | ast.lineno = p.lineno |
Shinichiro Hamaji | 7f1ede3 | 2015-03-30 18:05:22 +0900 | [diff] [blame] | 189 | return ast |
Fumitoshi Ukai | 119dc91 | 2015-03-30 16:52:41 +0900 | [diff] [blame] | 190 | } |
| 191 | |
Shinichiro Hamaji | d7bef60 | 2015-03-30 19:55:32 +0900 | [diff] [blame] | 192 | func (p *parser) parseInclude(line string, oplen int) AST { |
Fumitoshi Ukai | b36f387 | 2015-04-10 15:06:38 +0900 | [diff] [blame] | 193 | // TODO(ukai): parse expr here |
Shinichiro Hamaji | d7bef60 | 2015-03-30 19:55:32 +0900 | [diff] [blame] | 194 | ast := &IncludeAST{ |
| 195 | expr: line[oplen+1:], |
| 196 | op: line[:oplen], |
| 197 | } |
Shinichiro Hamaji | 491e73f | 2015-04-07 12:41:59 +0900 | [diff] [blame] | 198 | ast.filename = p.mk.filename |
Shinichiro Hamaji | d7bef60 | 2015-03-30 19:55:32 +0900 | [diff] [blame] | 199 | ast.lineno = p.lineno |
| 200 | return ast |
| 201 | } |
| 202 | |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 203 | func (p *parser) parseIfdef(line string, oplen int) AST { |
Fumitoshi Ukai | b36f387 | 2015-04-10 15:06:38 +0900 | [diff] [blame] | 204 | // TODO(ukai): parse expr here. |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 205 | ast := &IfAST{ |
Shinichiro Hamaji | ae32b78 | 2015-03-31 14:41:19 +0900 | [diff] [blame] | 206 | op: line[:oplen], |
Fumitoshi Ukai | b36f387 | 2015-04-10 15:06:38 +0900 | [diff] [blame] | 207 | lhs: line[oplen+1:], |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 208 | } |
Shinichiro Hamaji | 491e73f | 2015-04-07 12:41:59 +0900 | [diff] [blame] | 209 | ast.filename = p.mk.filename |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 210 | ast.lineno = p.lineno |
| 211 | p.addStatement(ast) |
Shinichiro Hamaji | a06760f | 2015-04-07 13:13:45 +0900 | [diff] [blame] | 212 | p.ifStack = append(p.ifStack, ifState{ast: ast, numNest: p.numIfNest}) |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 213 | p.outStmts = &ast.trueStmts |
| 214 | return ast |
| 215 | } |
| 216 | |
Shinichiro Hamaji | 1f47638 | 2015-04-09 14:46:04 +0900 | [diff] [blame] | 217 | func (p *parser) parseTwoQuotes(s string, op string) ([]string, bool) { |
Shinichiro Hamaji | 76de43e | 2015-04-03 10:40:18 +0900 | [diff] [blame] | 218 | var args []string |
Shinichiro Hamaji | 1f47638 | 2015-04-09 14:46:04 +0900 | [diff] [blame] | 219 | for i := 0; i < 2; i++ { |
| 220 | s = strings.TrimSpace(s) |
Fumitoshi Ukai | b36f387 | 2015-04-10 15:06:38 +0900 | [diff] [blame] | 221 | if s == "" { |
Shinichiro Hamaji | 76de43e | 2015-04-03 10:40:18 +0900 | [diff] [blame] | 222 | return nil, false |
| 223 | } |
Shinichiro Hamaji | 1f47638 | 2015-04-09 14:46:04 +0900 | [diff] [blame] | 224 | quote := s[0] |
| 225 | if quote != '\'' && quote != '"' { |
Shinichiro Hamaji | 76de43e | 2015-04-03 10:40:18 +0900 | [diff] [blame] | 226 | return nil, false |
| 227 | } |
Shinichiro Hamaji | 1f47638 | 2015-04-09 14:46:04 +0900 | [diff] [blame] | 228 | end := strings.IndexByte(s[1:], quote) + 1 |
| 229 | if end < 0 { |
| 230 | return nil, false |
| 231 | } |
Shinichiro Hamaji | 1f47638 | 2015-04-09 14:46:04 +0900 | [diff] [blame] | 232 | args = append(args, s[1:end]) |
| 233 | s = s[end+1:] |
| 234 | } |
| 235 | if len(s) > 0 { |
| 236 | Error(p.mk.filename, p.lineno, `extraneous text after %q directive`, op) |
Shinichiro Hamaji | 76de43e | 2015-04-03 10:40:18 +0900 | [diff] [blame] | 237 | } |
| 238 | return args, true |
| 239 | } |
| 240 | |
Fumitoshi Ukai | b36f387 | 2015-04-10 15:06:38 +0900 | [diff] [blame] | 241 | // parse |
| 242 | // "(lhs, rhs)" |
| 243 | // "lhs, rhs" |
Shinichiro Hamaji | 1f47638 | 2015-04-09 14:46:04 +0900 | [diff] [blame] | 244 | func (p *parser) parseEq(s string, op string) (string, string, bool) { |
Fumitoshi Ukai | b36f387 | 2015-04-10 15:06:38 +0900 | [diff] [blame] | 245 | if s[0] == '(' && s[len(s)-1] == ')' { |
| 246 | s = s[1 : len(s)-1] |
| 247 | term := []byte{','} |
| 248 | in := []byte(s) |
| 249 | v, n, err := parseExpr(in, term) |
| 250 | if err != nil { |
| 251 | return "", "", false |
Shinichiro Hamaji | 76de43e | 2015-04-03 10:40:18 +0900 | [diff] [blame] | 252 | } |
Fumitoshi Ukai | b36f387 | 2015-04-10 15:06:38 +0900 | [diff] [blame] | 253 | lhs := v.String() |
| 254 | n++ |
| 255 | n += skipSpaces(in[n:], nil) |
| 256 | v, n, err = parseExpr(in[n:], nil) |
| 257 | if err != nil { |
| 258 | return "", "", false |
| 259 | } |
| 260 | rhs := v.String() |
| 261 | return lhs, rhs, true |
| 262 | } |
| 263 | args, ok := p.parseTwoQuotes(s, op) |
| 264 | if !ok { |
Fumitoshi Ukai | e520f26 | 2015-03-31 17:27:03 +0900 | [diff] [blame] | 265 | return "", "", false |
| 266 | } |
Fumitoshi Ukai | b36f387 | 2015-04-10 15:06:38 +0900 | [diff] [blame] | 267 | return args[0], args[1], true |
Shinichiro Hamaji | af1e816 | 2015-03-31 02:15:37 +0900 | [diff] [blame] | 268 | } |
| 269 | |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 270 | func (p *parser) parseIfeq(line string, oplen int) AST { |
Shinichiro Hamaji | 1f47638 | 2015-04-09 14:46:04 +0900 | [diff] [blame] | 271 | op := line[:oplen] |
| 272 | lhs, rhs, ok := p.parseEq(strings.TrimSpace(line[oplen+1:]), op) |
Shinichiro Hamaji | af1e816 | 2015-03-31 02:15:37 +0900 | [diff] [blame] | 273 | if !ok { |
Shinichiro Hamaji | 491e73f | 2015-04-07 12:41:59 +0900 | [diff] [blame] | 274 | Error(p.mk.filename, p.lineno, `*** invalid syntax in conditional.`) |
Shinichiro Hamaji | af1e816 | 2015-03-31 02:15:37 +0900 | [diff] [blame] | 275 | } |
| 276 | |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 277 | ast := &IfAST{ |
Shinichiro Hamaji | 1f47638 | 2015-04-09 14:46:04 +0900 | [diff] [blame] | 278 | op: op, |
Shinichiro Hamaji | af1e816 | 2015-03-31 02:15:37 +0900 | [diff] [blame] | 279 | lhs: lhs, |
| 280 | rhs: rhs, |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 281 | } |
Shinichiro Hamaji | 491e73f | 2015-04-07 12:41:59 +0900 | [diff] [blame] | 282 | ast.filename = p.mk.filename |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 283 | ast.lineno = p.lineno |
| 284 | p.addStatement(ast) |
Shinichiro Hamaji | a06760f | 2015-04-07 13:13:45 +0900 | [diff] [blame] | 285 | p.ifStack = append(p.ifStack, ifState{ast: ast, numNest: p.numIfNest}) |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 286 | p.outStmts = &ast.trueStmts |
| 287 | return ast |
| 288 | } |
| 289 | |
| 290 | func (p *parser) checkIfStack(curKeyword string) { |
| 291 | if len(p.ifStack) == 0 { |
Shinichiro Hamaji | 491e73f | 2015-04-07 12:41:59 +0900 | [diff] [blame] | 292 | Error(p.mk.filename, p.lineno, `*** extraneous %q.`, curKeyword) |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 293 | } |
| 294 | } |
| 295 | |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 296 | func (p *parser) parseElse(line []byte) { |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 297 | p.checkIfStack("else") |
| 298 | state := &p.ifStack[len(p.ifStack)-1] |
Fumitoshi Ukai | 0293c7a | 2015-03-31 16:26:53 +0900 | [diff] [blame] | 299 | if state.inElse { |
Shinichiro Hamaji | 491e73f | 2015-04-07 12:41:59 +0900 | [diff] [blame] | 300 | Error(p.mk.filename, p.lineno, `*** only one "else" per conditional.`) |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 301 | } |
Fumitoshi Ukai | 0293c7a | 2015-03-31 16:26:53 +0900 | [diff] [blame] | 302 | state.inElse = true |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 303 | p.outStmts = &state.ast.falseStmts |
Shinichiro Hamaji | a06760f | 2015-04-07 13:13:45 +0900 | [diff] [blame] | 304 | |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 305 | nextIf := trimLeftSpaceBytes(line[len("else"):]) |
Shinichiro Hamaji | a06760f | 2015-04-07 13:13:45 +0900 | [diff] [blame] | 306 | if len(nextIf) == 0 { |
| 307 | return |
| 308 | } |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 309 | var ifDirectives = map[string]directiveFunc{ |
Shinichiro Hamaji | 3fab47e | 2015-04-08 18:34:41 +0900 | [diff] [blame] | 310 | "ifdef ": ifdefDirective, |
| 311 | "ifndef ": ifndefDirective, |
| 312 | "ifeq ": ifeqDirective, |
| 313 | "ifneq ": ifneqDirective, |
Shinichiro Hamaji | a06760f | 2015-04-07 13:13:45 +0900 | [diff] [blame] | 314 | } |
| 315 | p.numIfNest = state.numNest + 1 |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 316 | if f, ok := p.isDirective(nextIf, ifDirectives); ok { |
| 317 | f(p, nextIf) |
Shinichiro Hamaji | a06760f | 2015-04-07 13:13:45 +0900 | [diff] [blame] | 318 | p.numIfNest = 0 |
| 319 | return |
| 320 | } |
| 321 | p.numIfNest = 0 |
| 322 | WarnNoPrefix(p.mk.filename, p.lineno, "extraneous text after `else` directive") |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 323 | } |
| 324 | |
| 325 | func (p *parser) parseEndif(line string) { |
| 326 | p.checkIfStack("endif") |
Shinichiro Hamaji | a06760f | 2015-04-07 13:13:45 +0900 | [diff] [blame] | 327 | state := p.ifStack[len(p.ifStack)-1] |
| 328 | for t := 0; t <= state.numNest; t++ { |
| 329 | p.ifStack = p.ifStack[0 : len(p.ifStack)-1] |
| 330 | if len(p.ifStack) == 0 { |
| 331 | p.outStmts = &p.mk.stmts |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 332 | } else { |
Shinichiro Hamaji | a06760f | 2015-04-07 13:13:45 +0900 | [diff] [blame] | 333 | state := p.ifStack[len(p.ifStack)-1] |
| 334 | if state.inElse { |
| 335 | p.outStmts = &state.ast.falseStmts |
| 336 | } else { |
| 337 | p.outStmts = &state.ast.trueStmts |
| 338 | } |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 339 | } |
| 340 | } |
| 341 | } |
| 342 | |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 343 | type directiveFunc func(*parser, []byte) []byte |
| 344 | |
| 345 | var makeDirectives = map[string]directiveFunc{ |
Fumitoshi Ukai | 8209630 | 2015-04-01 10:37:47 +0900 | [diff] [blame] | 346 | "include ": includeDirective, |
| 347 | "-include ": sincludeDirective, |
| 348 | "sinclude": sincludeDirective, |
| 349 | "ifdef ": ifdefDirective, |
| 350 | "ifndef ": ifndefDirective, |
| 351 | "ifeq ": ifeqDirective, |
| 352 | "ifneq ": ifneqDirective, |
| 353 | "else": elseDirective, |
| 354 | "endif": endifDirective, |
Fumitoshi Ukai | 3d54db8 | 2015-04-01 11:03:31 +0900 | [diff] [blame] | 355 | "define ": defineDirective, |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 356 | "override ": overrideDirective, |
| 357 | "export ": exportDirective, |
Shinichiro Hamaji | 07e76d5 | 2015-05-26 18:22:31 +0900 | [diff] [blame] | 358 | "unexport ": unexportDirective, |
Fumitoshi Ukai | 8209630 | 2015-04-01 10:37:47 +0900 | [diff] [blame] | 359 | } |
| 360 | |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 361 | // TODO(ukai): use []byte |
| 362 | func (p *parser) isDirective(line []byte, directives map[string]directiveFunc) (directiveFunc, bool) { |
| 363 | stripped := trimLeftSpaceBytes(line) |
Shinichiro Hamaji | e103f65 | 2015-04-11 19:49:51 +0900 | [diff] [blame] | 364 | // Fast paths. |
| 365 | // TODO: Consider using a trie. |
| 366 | if len(stripped) == 0 { |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 367 | return nil, false |
Shinichiro Hamaji | e103f65 | 2015-04-11 19:49:51 +0900 | [diff] [blame] | 368 | } |
Shinichiro Hamaji | 07e76d5 | 2015-05-26 18:22:31 +0900 | [diff] [blame] | 369 | 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] | 370 | return nil, false |
Shinichiro Hamaji | e103f65 | 2015-04-11 19:49:51 +0900 | [diff] [blame] | 371 | } |
| 372 | |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 373 | for prefix, f := range directives { |
| 374 | if bytes.HasPrefix(stripped, []byte(prefix)) { |
| 375 | return f, true |
| 376 | } |
| 377 | if prefix[len(prefix)-1] == ' ' && bytes.HasPrefix(stripped, []byte(prefix[:len(prefix)-1])) && stripped[len(prefix)-1] == '\t' { |
| 378 | return f, true |
Shinichiro Hamaji | 74b8cb5 | 2015-04-08 19:47:43 +0900 | [diff] [blame] | 379 | } |
| 380 | } |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 381 | return nil, false |
Shinichiro Hamaji | 74b8cb5 | 2015-04-08 19:47:43 +0900 | [diff] [blame] | 382 | } |
| 383 | |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 384 | func includeDirective(p *parser, line []byte) []byte { |
| 385 | p.addStatement(p.parseInclude(string(line), len("include"))) |
| 386 | return nil |
Fumitoshi Ukai | 8209630 | 2015-04-01 10:37:47 +0900 | [diff] [blame] | 387 | } |
| 388 | |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 389 | func sincludeDirective(p *parser, line []byte) []byte { |
| 390 | p.addStatement(p.parseInclude(string(line), len("-include"))) |
| 391 | return nil |
Fumitoshi Ukai | 8209630 | 2015-04-01 10:37:47 +0900 | [diff] [blame] | 392 | } |
| 393 | |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 394 | func ifdefDirective(p *parser, line []byte) []byte { |
| 395 | p.parseIfdef(string(line), len("ifdef")) |
| 396 | return nil |
Fumitoshi Ukai | 8209630 | 2015-04-01 10:37:47 +0900 | [diff] [blame] | 397 | } |
| 398 | |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 399 | func ifndefDirective(p *parser, line []byte) []byte { |
| 400 | p.parseIfdef(string(line), len("ifndef")) |
| 401 | return nil |
Fumitoshi Ukai | 8209630 | 2015-04-01 10:37:47 +0900 | [diff] [blame] | 402 | } |
| 403 | |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 404 | func ifeqDirective(p *parser, line []byte) []byte { |
| 405 | p.parseIfeq(string(line), len("ifeq")) |
| 406 | return nil |
Fumitoshi Ukai | 8209630 | 2015-04-01 10:37:47 +0900 | [diff] [blame] | 407 | } |
| 408 | |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 409 | func ifneqDirective(p *parser, line []byte) []byte { |
| 410 | p.parseIfeq(string(line), len("ifneq")) |
| 411 | return nil |
Fumitoshi Ukai | 8209630 | 2015-04-01 10:37:47 +0900 | [diff] [blame] | 412 | } |
| 413 | |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 414 | func elseDirective(p *parser, line []byte) []byte { |
Fumitoshi Ukai | 8209630 | 2015-04-01 10:37:47 +0900 | [diff] [blame] | 415 | p.parseElse(line) |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 416 | return nil |
Fumitoshi Ukai | 8209630 | 2015-04-01 10:37:47 +0900 | [diff] [blame] | 417 | } |
| 418 | |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 419 | func endifDirective(p *parser, line []byte) []byte { |
| 420 | p.parseEndif(string(line)) |
| 421 | return nil |
Fumitoshi Ukai | 8209630 | 2015-04-01 10:37:47 +0900 | [diff] [blame] | 422 | } |
| 423 | |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 424 | func defineDirective(p *parser, line []byte) []byte { |
| 425 | lhs := trimLeftSpaceBytes(line[len("define "):]) |
| 426 | p.inDef = []string{string(lhs)} |
| 427 | return nil |
| 428 | } |
| 429 | |
| 430 | func overrideDirective(p *parser, line []byte) []byte { |
| 431 | p.defOpt = "override" |
| 432 | line = trimLeftSpaceBytes(line[len("override "):]) |
| 433 | defineDirective := map[string]directiveFunc{ |
| 434 | "define": defineDirective, |
| 435 | } |
| 436 | if f, ok := p.isDirective(line, defineDirective); ok { |
| 437 | f(p, line) |
| 438 | return nil |
| 439 | } |
| 440 | // e.g. overrider foo := bar |
| 441 | // line will be "foo := bar". |
| 442 | return line |
| 443 | } |
| 444 | |
Shinichiro Hamaji | ea553f3 | 2015-05-29 17:03:33 +0900 | [diff] [blame^] | 445 | func handleExport(p *parser, line []byte, export bool) (hasEqual bool) { |
| 446 | equalIndex := bytes.IndexByte(line, '=') |
| 447 | if equalIndex > 0 { |
| 448 | hasEqual = true |
| 449 | switch line[equalIndex-1] { |
| 450 | case ':', '+', '?': |
| 451 | equalIndex-- |
| 452 | } |
| 453 | line = line[:equalIndex] |
| 454 | } |
| 455 | |
Shinichiro Hamaji | f61033d | 2015-05-29 15:01:48 +0900 | [diff] [blame] | 456 | ast := &ExportAST{ |
| 457 | expr: line, |
| 458 | export: export, |
Shinichiro Hamaji | 7e52142 | 2015-05-29 14:23:30 +0900 | [diff] [blame] | 459 | } |
Shinichiro Hamaji | f61033d | 2015-05-29 15:01:48 +0900 | [diff] [blame] | 460 | ast.filename = p.mk.filename |
| 461 | ast.lineno = p.lineno |
| 462 | p.addStatement(ast) |
Shinichiro Hamaji | ea553f3 | 2015-05-29 17:03:33 +0900 | [diff] [blame^] | 463 | return hasEqual |
Shinichiro Hamaji | 7e52142 | 2015-05-29 14:23:30 +0900 | [diff] [blame] | 464 | } |
Shinichiro Hamaji | 07e76d5 | 2015-05-26 18:22:31 +0900 | [diff] [blame] | 465 | |
Shinichiro Hamaji | 7e52142 | 2015-05-29 14:23:30 +0900 | [diff] [blame] | 466 | func exportDirective(p *parser, line []byte) []byte { |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 467 | p.defOpt = "export" |
| 468 | line = trimLeftSpaceBytes(line[len("export "):]) |
| 469 | defineDirective := map[string]directiveFunc{ |
| 470 | "define": defineDirective, |
| 471 | } |
| 472 | if f, ok := p.isDirective(line, defineDirective); ok { |
| 473 | f(p, line) |
| 474 | return nil |
| 475 | } |
Shinichiro Hamaji | 07e76d5 | 2015-05-26 18:22:31 +0900 | [diff] [blame] | 476 | |
Shinichiro Hamaji | ea553f3 | 2015-05-29 17:03:33 +0900 | [diff] [blame^] | 477 | if !handleExport(p, line, true) { |
Shinichiro Hamaji | 07e76d5 | 2015-05-26 18:22:31 +0900 | [diff] [blame] | 478 | return nil |
| 479 | } |
| 480 | |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 481 | // e.g. export foo := bar |
| 482 | // line will be "foo := bar". |
| 483 | return line |
Fumitoshi Ukai | 3d54db8 | 2015-04-01 11:03:31 +0900 | [diff] [blame] | 484 | } |
| 485 | |
Shinichiro Hamaji | 07e76d5 | 2015-05-26 18:22:31 +0900 | [diff] [blame] | 486 | func unexportDirective(p *parser, line []byte) []byte { |
Shinichiro Hamaji | 7e52142 | 2015-05-29 14:23:30 +0900 | [diff] [blame] | 487 | handleExport(p, line[len("unexport "):], false) |
Shinichiro Hamaji | 07e76d5 | 2015-05-26 18:22:31 +0900 | [diff] [blame] | 488 | return nil |
| 489 | } |
| 490 | |
Fumitoshi Ukai | f8efa0a | 2015-03-30 18:10:11 +0900 | [diff] [blame] | 491 | func (p *parser) parse() (mk Makefile, err error) { |
| 492 | defer func() { |
| 493 | if r := recover(); r != nil { |
Fumitoshi Ukai | a9e5136 | 2015-04-17 10:26:00 +0900 | [diff] [blame] | 494 | err = fmt.Errorf("panic in parse %s: %v", mk.filename, r) |
Fumitoshi Ukai | f8efa0a | 2015-03-30 18:10:11 +0900 | [diff] [blame] | 495 | } |
| 496 | }() |
Shinichiro Hamaji | e184158 | 2015-03-30 17:20:33 +0900 | [diff] [blame] | 497 | for !p.done { |
Shinichiro Hamaji | 0b93c86 | 2015-04-07 06:15:15 +0900 | [diff] [blame] | 498 | line := p.readLine() |
Shinichiro Hamaji | e184158 | 2015-03-30 17:20:33 +0900 | [diff] [blame] | 499 | |
Fumitoshi Ukai | 3d54db8 | 2015-04-01 11:03:31 +0900 | [diff] [blame] | 500 | if len(p.inDef) > 0 { |
Shinichiro Hamaji | e52c16c | 2015-04-11 23:41:39 +0900 | [diff] [blame] | 501 | line = p.processDefineLine(line) |
Shinichiro Hamaji | c88618f | 2015-04-11 19:58:06 +0900 | [diff] [blame] | 502 | if trimLeftSpace(string(line)) == "endef" { |
Fumitoshi Ukai | 3d54db8 | 2015-04-01 11:03:31 +0900 | [diff] [blame] | 503 | Log("multilineAssign %q", p.inDef) |
| 504 | ast := &AssignAST{ |
| 505 | lhs: p.inDef[0], |
| 506 | rhs: strings.Join(p.inDef[1:], "\n"), |
| 507 | op: "=", |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 508 | opt: p.defOpt, |
Fumitoshi Ukai | 3d54db8 | 2015-04-01 11:03:31 +0900 | [diff] [blame] | 509 | } |
Shinichiro Hamaji | 491e73f | 2015-04-07 12:41:59 +0900 | [diff] [blame] | 510 | ast.filename = p.mk.filename |
Fumitoshi Ukai | 3d54db8 | 2015-04-01 11:03:31 +0900 | [diff] [blame] | 511 | ast.lineno = p.lineno - len(p.inDef) |
| 512 | p.addStatement(ast) |
| 513 | p.inDef = nil |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 514 | p.defOpt = "" |
Fumitoshi Ukai | 3d54db8 | 2015-04-01 11:03:31 +0900 | [diff] [blame] | 515 | continue |
| 516 | } |
| 517 | p.inDef = append(p.inDef, string(line)) |
| 518 | continue |
| 519 | } |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 520 | p.defOpt = "" |
Fumitoshi Ukai | 3d54db8 | 2015-04-01 11:03:31 +0900 | [diff] [blame] | 521 | |
Shinichiro Hamaji | 960161f | 2015-04-13 17:10:10 +0900 | [diff] [blame] | 522 | if len(bytes.TrimSpace(line)) == 0 { |
| 523 | continue |
| 524 | } |
| 525 | |
Fumitoshi Ukai | b2c300f | 2015-04-23 00:59:26 +0900 | [diff] [blame] | 526 | if f, ok := p.isDirective(line, makeDirectives); ok { |
| 527 | line = p.processMakefileLine(trimLeftSpaceBytes(line)) |
| 528 | line = f(p, line) |
| 529 | if len(line) == 0 { |
| 530 | continue |
| 531 | } |
Shinichiro Hamaji | 74b8cb5 | 2015-04-08 19:47:43 +0900 | [diff] [blame] | 532 | } |
Shinichiro Hamaji | 0b93c86 | 2015-04-07 06:15:15 +0900 | [diff] [blame] | 533 | if line[0] == '\t' { |
| 534 | ast := &CommandAST{cmd: string(p.processRecipeLine(line[1:]))} |
Shinichiro Hamaji | 491e73f | 2015-04-07 12:41:59 +0900 | [diff] [blame] | 535 | ast.filename = p.mk.filename |
Shinichiro Hamaji | 0b93c86 | 2015-04-07 06:15:15 +0900 | [diff] [blame] | 536 | ast.lineno = p.lineno |
| 537 | p.addStatement(ast) |
| 538 | continue |
| 539 | } |
| 540 | |
| 541 | line = p.processMakefileLine(line) |
Shinichiro Hamaji | a66a179 | 2015-03-31 18:04:08 +0900 | [diff] [blame] | 542 | |
Shinichiro Hamaji | 7f1ede3 | 2015-03-30 18:05:22 +0900 | [diff] [blame] | 543 | var ast AST |
Shinichiro Hamaji | 34e2324 | 2015-04-06 15:44:50 +0900 | [diff] [blame] | 544 | var parenStack []byte |
Shinichiro Hamaji | e12e24d | 2015-04-11 23:09:20 +0900 | [diff] [blame] | 545 | equalIndex := -1 |
Shinichiro Hamaji | 3fab47e | 2015-04-08 18:34:41 +0900 | [diff] [blame] | 546 | semicolonIndex := -1 |
| 547 | isRule := false |
Shinichiro Hamaji | e184158 | 2015-03-30 17:20:33 +0900 | [diff] [blame] | 548 | for i, ch := range line { |
| 549 | switch ch { |
Shinichiro Hamaji | 34e2324 | 2015-04-06 15:44:50 +0900 | [diff] [blame] | 550 | case '(', '{': |
| 551 | parenStack = append(parenStack, ch) |
| 552 | case ')', '}': |
| 553 | if len(parenStack) == 0 { |
Shinichiro Hamaji | 491e73f | 2015-04-07 12:41:59 +0900 | [diff] [blame] | 554 | Warn(p.mk.filename, p.lineno, "Unmatched parens: %s", line) |
Shinichiro Hamaji | 34e2324 | 2015-04-06 15:44:50 +0900 | [diff] [blame] | 555 | } else { |
| 556 | parenStack = parenStack[:len(parenStack)-1] |
| 557 | } |
| 558 | } |
| 559 | if len(parenStack) > 0 { |
| 560 | continue |
| 561 | } |
| 562 | |
| 563 | switch ch { |
Shinichiro Hamaji | e184158 | 2015-03-30 17:20:33 +0900 | [diff] [blame] | 564 | case ':': |
Shinichiro Hamaji | 7f1ede3 | 2015-03-30 18:05:22 +0900 | [diff] [blame] | 565 | if i+1 < len(line) && line[i+1] == '=' { |
Shinichiro Hamaji | 156ef3e | 2015-04-11 22:44:41 +0900 | [diff] [blame] | 566 | if !isRule { |
| 567 | ast = p.parseAssign(line, i, i+2) |
| 568 | } |
Shinichiro Hamaji | 7f1ede3 | 2015-03-30 18:05:22 +0900 | [diff] [blame] | 569 | } else { |
Shinichiro Hamaji | 3fab47e | 2015-04-08 18:34:41 +0900 | [diff] [blame] | 570 | isRule = true |
Shinichiro Hamaji | e184158 | 2015-03-30 17:20:33 +0900 | [diff] [blame] | 571 | } |
Shinichiro Hamaji | 3fab47e | 2015-04-08 18:34:41 +0900 | [diff] [blame] | 572 | case ';': |
Shinichiro Hamaji | e12e24d | 2015-04-11 23:09:20 +0900 | [diff] [blame] | 573 | if semicolonIndex < 0 { |
| 574 | semicolonIndex = i |
| 575 | } |
Shinichiro Hamaji | e184158 | 2015-03-30 17:20:33 +0900 | [diff] [blame] | 576 | case '=': |
Shinichiro Hamaji | 3fab47e | 2015-04-08 18:34:41 +0900 | [diff] [blame] | 577 | if !isRule { |
| 578 | ast = p.parseAssign(line, i, i+1) |
| 579 | } |
Shinichiro Hamaji | e12e24d | 2015-04-11 23:09:20 +0900 | [diff] [blame] | 580 | if equalIndex < 0 { |
| 581 | equalIndex = i |
| 582 | } |
Shinichiro Hamaji | 69b7f65 | 2015-03-31 01:01:59 +0900 | [diff] [blame] | 583 | case '?', '+': |
Shinichiro Hamaji | 3fab47e | 2015-04-08 18:34:41 +0900 | [diff] [blame] | 584 | if !isRule && i+1 < len(line) && line[i+1] == '=' { |
Shinichiro Hamaji | 69b7f65 | 2015-03-31 01:01:59 +0900 | [diff] [blame] | 585 | ast = p.parseAssign(line, i, i+2) |
| 586 | } |
Shinichiro Hamaji | e184158 | 2015-03-30 17:20:33 +0900 | [diff] [blame] | 587 | } |
Shinichiro Hamaji | 7f1ede3 | 2015-03-30 18:05:22 +0900 | [diff] [blame] | 588 | if ast != nil { |
Shinichiro Hamaji | 497754d | 2015-03-31 02:02:11 +0900 | [diff] [blame] | 589 | p.addStatement(ast) |
Shinichiro Hamaji | 7f1ede3 | 2015-03-30 18:05:22 +0900 | [diff] [blame] | 590 | break |
| 591 | } |
Fumitoshi Ukai | 119dc91 | 2015-03-30 16:52:41 +0900 | [diff] [blame] | 592 | } |
Shinichiro Hamaji | de82971 | 2015-03-31 18:26:56 +0900 | [diff] [blame] | 593 | if ast == nil { |
Shinichiro Hamaji | e12e24d | 2015-04-11 23:09:20 +0900 | [diff] [blame] | 594 | ast = p.parseMaybeRule(string(line), equalIndex, semicolonIndex) |
Shinichiro Hamaji | de82971 | 2015-03-31 18:26:56 +0900 | [diff] [blame] | 595 | if ast != nil { |
| 596 | p.addStatement(ast) |
| 597 | } |
Shinichiro Hamaji | 685fecf | 2015-03-30 18:28:12 +0900 | [diff] [blame] | 598 | } |
Fumitoshi Ukai | 119dc91 | 2015-03-30 16:52:41 +0900 | [diff] [blame] | 599 | } |
| 600 | return p.mk, nil |
| 601 | } |
| 602 | |
Shinichiro Hamaji | 290eb25 | 2015-05-19 18:03:19 +0900 | [diff] [blame] | 603 | func ParseMakefileFd(filename string, f *os.File) (Makefile, error) { |
| 604 | parser := newParser(f, filename) |
| 605 | return parser.parse() |
| 606 | } |
| 607 | |
Shinichiro Hamaji | 45cde1d | 2015-05-25 18:21:23 +0900 | [diff] [blame] | 608 | /* |
Fumitoshi Ukai | 119dc91 | 2015-03-30 16:52:41 +0900 | [diff] [blame] | 609 | func ParseMakefile(filename string) (Makefile, error) { |
Fumitoshi Ukai | a9e5136 | 2015-04-17 10:26:00 +0900 | [diff] [blame] | 610 | Log("ParseMakefile %q", filename) |
Fumitoshi Ukai | 119dc91 | 2015-03-30 16:52:41 +0900 | [diff] [blame] | 611 | f, err := os.Open(filename) |
| 612 | if err != nil { |
| 613 | return Makefile{}, err |
| 614 | } |
Fumitoshi Ukai | cf2b038 | 2015-03-30 17:48:54 +0900 | [diff] [blame] | 615 | defer f.Close() |
Shinichiro Hamaji | 290eb25 | 2015-05-19 18:03:19 +0900 | [diff] [blame] | 616 | return ParseMakefileFd(filename, f) |
Fumitoshi Ukai | 119dc91 | 2015-03-30 16:52:41 +0900 | [diff] [blame] | 617 | } |
| 618 | |
Shinichiro Hamaji | 750ae2e | 2015-05-20 12:59:15 +0900 | [diff] [blame] | 619 | func ParseDefaultMakefile() (Makefile, string, error) { |
Fumitoshi Ukai | 119dc91 | 2015-03-30 16:52:41 +0900 | [diff] [blame] | 620 | candidates := []string{"GNUmakefile", "makefile", "Makefile"} |
| 621 | for _, filename := range candidates { |
| 622 | if exists(filename) { |
Shinichiro Hamaji | 750ae2e | 2015-05-20 12:59:15 +0900 | [diff] [blame] | 623 | mk, err := ParseMakefile(filename) |
| 624 | return mk, filename, err |
Fumitoshi Ukai | 119dc91 | 2015-03-30 16:52:41 +0900 | [diff] [blame] | 625 | } |
| 626 | } |
Shinichiro Hamaji | 750ae2e | 2015-05-20 12:59:15 +0900 | [diff] [blame] | 627 | return Makefile{}, "", errors.New("no targets specified and no makefile found.") |
Fumitoshi Ukai | 119dc91 | 2015-03-30 16:52:41 +0900 | [diff] [blame] | 628 | } |
Shinichiro Hamaji | 45cde1d | 2015-05-25 18:21:23 +0900 | [diff] [blame] | 629 | */ |
Shinichiro Hamaji | c384081 | 2015-04-02 02:10:20 +0900 | [diff] [blame] | 630 | |
Shinichiro Hamaji | b0d2e2f | 2015-05-20 16:42:59 +0900 | [diff] [blame] | 631 | func GetDefaultMakefile() string { |
| 632 | candidates := []string{"GNUmakefile", "makefile", "Makefile"} |
| 633 | for _, filename := range candidates { |
| 634 | if exists(filename) { |
| 635 | return filename |
| 636 | } |
| 637 | } |
| 638 | ErrorNoLocation("no targets specified and no makefile found.") |
| 639 | panic("") // Cannot be reached. |
| 640 | } |
| 641 | |
Shinichiro Hamaji | 28ea5bc | 2015-04-11 12:41:08 +0900 | [diff] [blame] | 642 | func parseMakefileReader(rd io.Reader, name string, lineno int) (Makefile, error) { |
Shinichiro Hamaji | a5dee37 | 2015-04-03 16:41:30 +0900 | [diff] [blame] | 643 | parser := newParser(rd, name) |
Shinichiro Hamaji | 370be72 | 2015-04-10 14:55:23 +0900 | [diff] [blame] | 644 | parser.lineno = lineno |
Shinichiro Hamaji | 29ffc97 | 2015-04-06 16:13:27 +0900 | [diff] [blame] | 645 | parser.elineno = lineno |
Shinichiro Hamaji | 370be72 | 2015-04-10 14:55:23 +0900 | [diff] [blame] | 646 | parser.linenoFixed = true |
Shinichiro Hamaji | a5dee37 | 2015-04-03 16:41:30 +0900 | [diff] [blame] | 647 | return parser.parse() |
Shinichiro Hamaji | c384081 | 2015-04-02 02:10:20 +0900 | [diff] [blame] | 648 | } |
Shinichiro Hamaji | 28ea5bc | 2015-04-11 12:41:08 +0900 | [diff] [blame] | 649 | |
| 650 | func ParseMakefileString(s string, name string, lineno int) (Makefile, error) { |
| 651 | return parseMakefileReader(strings.NewReader(s), name, lineno) |
| 652 | } |
| 653 | |
| 654 | func ParseMakefileBytes(s []byte, name string, lineno int) (Makefile, error) { |
| 655 | return parseMakefileReader(bytes.NewReader(s), name, lineno) |
| 656 | } |
Shinichiro Hamaji | 45cde1d | 2015-05-25 18:21:23 +0900 | [diff] [blame] | 657 | |
| 658 | func ParseMakefile(s []byte, filename string) (Makefile, error) { |
| 659 | Log("ParseMakefile %q", filename) |
| 660 | parser := newParser(bytes.NewReader(s), filename) |
| 661 | return parser.parse() |
| 662 | } |