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| 1 # Copyright 2016 The Chromium Authors. All rights reserved. | 1 # Copyright 2016 The Chromium Authors. All rights reserved. |
| 2 # Use of this source code is governed by a BSD-style license that can be | 2 # Use of this source code is governed by a BSD-style license that can be |
| 3 # found in the LICENSE file. | 3 # found in the LICENSE file. |
| 4 | 4 |
| 5 # pylint: disable=import-error,print-statement,relative-import | 5 # pylint: disable=import-error,print-statement,relative-import |
| 6 | 6 |
| 7 """Plumbing for a Jinja-based code generator, including CodeGeneratorBase, a bas
e class for all generators.""" | 7 """Plumbing for a Jinja-based code generator, including CodeGeneratorBase, a bas
e class for all generators.""" |
| 8 | 8 |
| 9 import os | 9 import os |
| 10 import posixpath | 10 import posixpath |
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| 51 | 51 |
| 52 | 52 |
| 53 # [Exposed] | 53 # [Exposed] |
| 54 def exposed_if(code, exposed_test): | 54 def exposed_if(code, exposed_test): |
| 55 if not exposed_test: | 55 if not exposed_test: |
| 56 return code | 56 return code |
| 57 return generate_indented_conditional(code, 'executionContext && (%s)' % expo
sed_test) | 57 return generate_indented_conditional(code, 'executionContext && (%s)' % expo
sed_test) |
| 58 | 58 |
| 59 | 59 |
| 60 # [SecureContext] | 60 # [SecureContext] |
| 61 def secure_context_if(code, secure_context_test): | 61 def secure_context_if(code, secure_context_test, test_result=None): |
| 62 if not secure_context_test: | 62 if not secure_context_test: |
| 63 return code | 63 return code |
| 64 if test_result: |
| 65 return generate_indented_conditional(code, test_result) |
| 64 return generate_indented_conditional(code, 'executionContext && (%s)' % secu
re_context_test) | 66 return generate_indented_conditional(code, 'executionContext && (%s)' % secu
re_context_test) |
| 65 | 67 |
| 66 | 68 |
| 67 # [RuntimeEnabled] | 69 # [RuntimeEnabled] |
| 68 def runtime_enabled_if(code, name): | 70 def runtime_enabled_if(code, name): |
| 69 if not name: | 71 if not name: |
| 70 return code | 72 return code |
| 71 | 73 |
| 72 function = v8_utilities.runtime_enabled_function(name) | 74 function = v8_utilities.runtime_enabled_function(name) |
| 73 return generate_indented_conditional(code, function) | 75 return generate_indented_conditional(code, function) |
| 74 | 76 |
| 75 | |
| 76 def initialize_jinja_env(cache_dir): | 77 def initialize_jinja_env(cache_dir): |
| 77 jinja_env = jinja2.Environment( | 78 jinja_env = jinja2.Environment( |
| 78 loader=jinja2.FileSystemLoader(TEMPLATES_DIR), | 79 loader=jinja2.FileSystemLoader(TEMPLATES_DIR), |
| 79 # Bytecode cache is not concurrency-safe unless pre-cached: | 80 # Bytecode cache is not concurrency-safe unless pre-cached: |
| 80 # if pre-cached this is read-only, but writing creates a race condition. | 81 # if pre-cached this is read-only, but writing creates a race condition. |
| 81 bytecode_cache=jinja2.FileSystemBytecodeCache(cache_dir), | 82 bytecode_cache=jinja2.FileSystemBytecodeCache(cache_dir), |
| 82 keep_trailing_newline=True, # newline-terminate generated files | 83 keep_trailing_newline=True, # newline-terminate generated files |
| 83 lstrip_blocks=True, # so can indent control flow tags | 84 lstrip_blocks=True, # so can indent control flow tags |
| 84 trim_blocks=True) | 85 trim_blocks=True) |
| 85 jinja_env.filters.update({ | 86 jinja_env.filters.update({ |
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| 184 | 185 |
| 185 # Create a dummy file as output for the build system, | 186 # Create a dummy file as output for the build system, |
| 186 # since filenames of individual cache files are unpredictable and opaque | 187 # since filenames of individual cache files are unpredictable and opaque |
| 187 # (they are hashes of the template path, which varies based on environment) | 188 # (they are hashes of the template path, which varies based on environment) |
| 188 with open(dummy_filename, 'w') as dummy_file: | 189 with open(dummy_filename, 'w') as dummy_file: |
| 189 pass # |open| creates or touches the file | 190 pass # |open| creates or touches the file |
| 190 | 191 |
| 191 | 192 |
| 192 if __name__ == '__main__': | 193 if __name__ == '__main__': |
| 193 sys.exit(main(sys.argv)) | 194 sys.exit(main(sys.argv)) |
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