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Side by Side Diff: Source/bindings/scripts/v8_types.py

Issue 24156003: Revert IDL compiler build flow to Perl, rename 'deprecated' (Closed) Base URL: svn://svn.chromium.org/blink/trunk
Patch Set: Rebase Created 7 years, 3 months ago
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1 # Copyright (C) 2013 Google Inc. All rights reserved.
2 #
3 # Redistribution and use in source and binary forms, with or without
4 # modification, are permitted provided that the following conditions are
5 # met:
6 #
7 # * Redistributions of source code must retain the above copyright
8 # notice, this list of conditions and the following disclaimer.
9 # * Redistributions in binary form must reproduce the above
10 # copyright notice, this list of conditions and the following disclaimer
11 # in the documentation and/or other materials provided with the
12 # distribution.
13 # * Neither the name of Google Inc. nor the names of its
14 # contributors may be used to endorse or promote products derived from
15 # this software without specific prior written permission.
16 #
17 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
20 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
21 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28
29 import re
30
31 CPP_TYPE_SAME_AS_IDL_TYPE = set([
32 'double',
33 'float',
34 'int', # FIXME: int is not an IDL type
35 'long long',
36 'unsigned long long',
37 ])
38 CPP_INT_TYPES = set([
39 'byte',
40 'long',
41 'short',
42 ])
43 CPP_UNSIGNED_TYPES = set([
44 'octet',
45 'unsigned int',
46 'unsigned long',
47 'unsigned short',
48 ])
49 # Promise is not yet in the Web IDL spec but is going to be speced
50 # as primitive types in the future.
51 # Since V8 dosn't provide Promise primitive object currently,
52 # PRIMITIVE_TYPES doesn't contain Promise.
53 CPP_TYPE_SPECIAL_CONVERSION_RULES = {
54 'boolean': 'bool',
55 'DOMString': 'const String&',
56 'Promise': 'ScriptPromise',
57 }
58 PRIMITIVE_TYPES = set([
59 # http://www.w3.org/TR/WebIDL/#dfn-primitive-type
60 'boolean',
61 'float',
62 # unrestricted float is not supported
63 'double',
64 # unrestricted double is not supported
65 # integer types
66 # http://www.w3.org/TR/WebIDL/#dfn-integer-type
67 'byte',
68 'octet',
69 'short',
70 'unsigned short',
71 # int and unsigned are not IDL types
72 'long',
73 'unsigned long',
74 'long long',
75 'unsigned long long',
76 # Blink-specific additions
77 'Date',
78 'void',
79 ])
80 CPP_VALUE_TO_V8_VALUE_DICT = {
81 'boolean': 'v8Boolean({cpp_value}, {isolate})',
82 # long long and unsigned long long are not representable in ECMAScript.
83 'long long': 'v8::Number::New({isolate}, static_cast<double>({cpp_value}))',
84 'unsigned long long': 'v8::Number::New({isolate}, static_cast<double>({cpp_v alue}))',
85 'float': 'v8::Number::New({isolate}, {cpp_value})',
86 'double': 'v8::Number::New({isolate}, {cpp_value})',
87 'DOMTimeStamp': 'v8::Number::New({isolate}, static_cast<double>({cpp_value}) )',
88 'DOMString': 'v8String({cpp_value}, {isolate})',
89 }
90 CPP_VALUE_TO_V8_VALUE_ARRAY_OR_SEQUENCE_TYPE = 'v8Array({cpp_value}, {isolate})'
91 CPP_VALUE_TO_V8_VALUE_DEFAULT = 'toV8({cpp_value}, {creation_context}, {isolate} )'
92 V8_SET_RETURN_VALUE_DICT = {
93 'unsigned': 'v8SetReturnValueUnsigned({callback_info}, {cpp_value});',
94 }
95
96
97 def array_or_sequence_type(idl_type):
98 return array_type(idl_type) or sequence_type(idl_type)
99
100
101 def array_type(idl_type):
102 matched = re.match(r'([\w\s]+)\[\]', idl_type)
103 return matched and matched.group(1)
104
105
106 def primitive_type(idl_type):
107 return idl_type in PRIMITIVE_TYPES
108
109
110 def sequence_type(idl_type):
111 matched = re.match(r'sequence<([\w\s]+)>', idl_type)
112 return matched and matched.group(1)
113
114
115 def v8_type(interface_type):
116 return 'V8' + interface_type
117
118
119 def cpp_type(idl_type, pointer_type=None):
120 """Returns the C++ type corresponding to the IDL type.
121
122 If unidentified, fall back to a pointer.
123
124 Args:
125 idl_type: IDL type
126 pointer_type: If specified, return 'pointer_type<idl_type>'
127 (e.g. RefPtr<Foo>, PassRefPtr<Foo>)
128 else defaults to returning raw pointer form (e.g. 'Foo*').
129 """
130 if idl_type in CPP_TYPE_SAME_AS_IDL_TYPE:
131 return idl_type
132 if idl_type in CPP_INT_TYPES:
133 return 'int'
134 if idl_type in CPP_UNSIGNED_TYPES:
135 return 'unsigned'
136 if idl_type in CPP_TYPE_SPECIAL_CONVERSION_RULES:
137 return CPP_TYPE_SPECIAL_CONVERSION_RULES[idl_type]
138 this_array_or_sequence_type = array_or_sequence_type(idl_type)
139 if this_array_or_sequence_type:
140 return 'const Vector<{cpp_type} >&'.format(cpp_type=cpp_type(this_array_ or_sequence_type, 'RefPtr'))
141 if pointer_type:
142 return '{pointer_type}<{idl_type}>'.format(pointer_type=pointer_type, id l_type=idl_type)
143 return idl_type + '*' # raw pointer
144
145
146 def cpp_value_to_v8_value(idl_type, cpp_value, isolate, creation_context=''):
147 """Returns an expression converting a C++ value to a V8 value."""
148 if idl_type in CPP_VALUE_TO_V8_VALUE_DICT:
149 expression_format_string = CPP_VALUE_TO_V8_VALUE_DICT[idl_type]
150 elif primitive_type(idl_type): # primitive but not in dict
151 raise Exception('unexpected IDL type %s' % idl_type)
152 elif array_or_sequence_type(idl_type):
153 expression_format_string = CPP_VALUE_TO_V8_VALUE_ARRAY_OR_SEQUENCE_TYPE
154 else:
155 expression_format_string = CPP_VALUE_TO_V8_VALUE_DEFAULT
156 return expression_format_string.format(cpp_value=cpp_value, creation_context =creation_context, isolate=isolate)
157
158
159 def v8_set_return_value(idl_type, cpp_value, callback_info=''):
160 """Returns a statement converting a C++ value to a V8 value and setting it a s a return value."""
161 this_cpp_type = cpp_type(idl_type)
162 if this_cpp_type in V8_SET_RETURN_VALUE_DICT:
163 expression_format_string = V8_SET_RETURN_VALUE_DICT[this_cpp_type]
164 else:
165 raise Exception('unexpected IDL type %s' % idl_type)
166 return expression_format_string.format(callback_info=callback_info, cpp_valu e=cpp_value)
167
168
169 def includes_for_type(idl_type):
170 if primitive_type(idl_type) or idl_type == 'DOMString':
171 return set()
172 if idl_type == 'Promise':
173 return set(['ScriptPromise.h'])
174 this_array_or_sequence_type = array_or_sequence_type(idl_type)
175 if this_array_or_sequence_type:
176 return includes_for_type(this_array_or_sequence_type)
177 return set(['V8%s.h' % idl_type])
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