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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | |
2 // for details. All rights reserved. Use of this source code is governed by a | |
3 // BSD-style license that can be found in the LICENSE file. | |
4 | |
5 /** General options used by the compiler. */ | |
6 FrogOptions options; | |
7 | |
8 /** Extracts options from command-line arguments. */ | |
9 void parseOptions(String homedir, List<String> args, FileSystem files) { | |
10 assert(options == null); | |
11 options = new FrogOptions(homedir, args, files); | |
12 } | |
13 | |
14 // TODO(sigmund): make into a generic option parser... | |
15 class FrogOptions { | |
16 /** Location of corelib and other special dart libraries. */ | |
17 String libDir; | |
18 | |
19 /* The top-level dart script to compile. */ | |
20 String dartScript; | |
21 | |
22 /* The directory to look in for "package:" scheme URIs. */ | |
23 String packageRoot; | |
24 | |
25 /** Where to place the generated code. */ | |
26 String outfile; | |
27 | |
28 // TODO(dgrove): fix this. For now, either 'sdk' or 'dev'. | |
29 final config = 'dev'; | |
30 | |
31 // Options that modify behavior significantly | |
32 bool legOnly = false; | |
33 bool allowMockCompilation = false; | |
34 bool enableAsserts = false; | |
35 bool enableTypeChecks = false; | |
36 bool warningsAsErrors = false; | |
37 bool verifyImplements = false; // TODO(jimhug): Implement | |
38 bool compileAll = false; | |
39 bool forceDynamic = false; | |
40 bool dietParse = false; | |
41 bool compileOnly = false; | |
42 bool inferTypes = false; | |
43 bool checkOnly = false; | |
44 bool ignoreUnrecognizedFlags = false; | |
45 bool emitCodeComments = false; | |
46 | |
47 // Specifies non-compliant behavior where array bounds checks are | |
48 // not implemented in generated code. | |
49 bool disableBoundsChecks = false; | |
50 | |
51 // Message support | |
52 bool throwOnErrors = false; | |
53 bool throwOnWarnings = false; | |
54 bool throwOnFatal = false; | |
55 bool showInfo = false; | |
56 bool showWarnings = true; | |
57 bool useColors = true; | |
58 | |
59 // Not currently settable via command line. | |
60 // Intended for use by compiler implementer during debugging. | |
61 // TODO(jmesserly): what are the right values for these? | |
62 int maxInferenceIterations = 4; | |
63 | |
64 /** | |
65 * Options to be used later for passing to the generated code. These are all | |
66 * the arguments after the first dart script, if any. | |
67 */ | |
68 List<String> childArgs; | |
69 | |
70 FrogOptions(String homedir, List<String> args, FileSystem files) { | |
71 if (config == 'dev') { | |
72 libDir = joinPaths(homedir, '/../..'); // Default value for --libdir. | |
73 } else if (config == 'sdk') { | |
74 libDir = joinPaths(homedir, '/../..'); | |
75 } else { | |
76 world.error('Invalid configuration $config', null); | |
77 throw('Invalid configuration'); | |
78 } | |
79 | |
80 bool passedLibDir = false; | |
81 childArgs = []; | |
82 | |
83 // Start from 2 to skip arguments representing the compiler command | |
84 // (python followed by frog.py). | |
85 loop: for (int i = 2; i < args.length; i++) { | |
86 var arg = args[i]; | |
87 if (tryParseSimpleOption(arg)) continue; | |
88 if (arg.endsWith('.dart')) { | |
89 dartScript = arg; | |
90 childArgs = args.getRange(i + 1, args.length - i - 1); | |
91 break loop; | |
92 } else if (arg.startsWith('--out=')) { | |
93 outfile = arg.substring('--out='.length); | |
94 } else if (arg.startsWith('--libdir=')) { | |
95 libDir = arg.substring('--libdir='.length); | |
96 passedLibDir = true; | |
97 } else if (arg.startsWith('--package-root')) { | |
98 packageRoot = arg.substring('--package-root='.length); | |
99 } else if (!ignoreUnrecognizedFlags) { | |
100 print('unrecognized flag: "$arg"'); | |
101 } | |
102 } | |
103 | |
104 // TODO(jimhug): Remove this hack. | |
105 if (!passedLibDir && config == 'dev' && !files.fileExists(libDir)) { | |
106 // Try locally | |
107 var temp = 'frog/lib'; | |
108 if (files.fileExists(temp)) { | |
109 libDir = temp; | |
110 } else { | |
111 libDir = 'lib'; | |
112 } | |
113 } | |
114 } | |
115 | |
116 bool tryParseSimpleOption(String option) { | |
117 if (!option.startsWith('--')) return false; | |
118 switch (option.replaceAll('_', '-')) { | |
119 case '--leg': | |
120 case '--enable-leg': | |
121 case '--leg-only': | |
122 legOnly = true; | |
123 return true; | |
124 | |
125 case '--allow-mock-compilation': | |
126 allowMockCompilation = true; | |
127 return true; | |
128 | |
129 case '--enable-asserts': | |
130 enableAsserts = true; | |
131 return true; | |
132 | |
133 case '--enable-type-checks': | |
134 enableTypeChecks = true; | |
135 enableAsserts = true; // TODO(kasperl): Remove once VM stops. | |
136 return true; | |
137 | |
138 case '--verify-implements': | |
139 verifyImplements = true; | |
140 return true; | |
141 | |
142 case '--compile-all': | |
143 compileAll = true; | |
144 return true; | |
145 | |
146 case '--check-only': | |
147 checkOnly = true; | |
148 return true; | |
149 | |
150 case '--diet-parse': | |
151 dietParse = true; | |
152 return true; | |
153 | |
154 case '--ignore-unrecognized-flags': | |
155 ignoreUnrecognizedFlags = true; | |
156 return true; | |
157 | |
158 case '--verbose': | |
159 showInfo = true; | |
160 return true; | |
161 | |
162 case '--suppress-warnings': | |
163 showWarnings = false; | |
164 return true; | |
165 | |
166 case '--warnings-as-errors': | |
167 warningsAsErrors = true; | |
168 return true; | |
169 | |
170 case '--throw-on-errors': | |
171 throwOnErrors = true; | |
172 return true; | |
173 | |
174 case '--throw-on-warnings': | |
175 throwOnWarnings = true; | |
176 return true; | |
177 | |
178 case '--compile-only': | |
179 // As opposed to compiling and running, the default behavior. | |
180 compileOnly = true; | |
181 return true; | |
182 | |
183 case '--Xforce-dynamic': | |
184 forceDynamic = true; | |
185 return true; | |
186 | |
187 case '--no-colors': | |
188 useColors = false; | |
189 return true; | |
190 | |
191 case '--Xinfer-types': | |
192 inferTypes = true; | |
193 return true; | |
194 | |
195 case '--enable-checked-mode': | |
196 case '--checked': | |
197 enableTypeChecks = true; | |
198 enableAsserts = true; | |
199 return true; | |
200 | |
201 case '--unchecked': | |
202 disableBoundsChecks = true; | |
203 return true; | |
204 | |
205 case '--emit-code-comments': | |
206 emitCodeComments = true; | |
207 return true; | |
208 } | |
209 return false; | |
210 } | |
211 } | |
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