[apple/javascriptcore.git] / generate-js-builtins

#!/usr/bin/python
# Copyright (C) 2014 Apple Inc. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
# OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

import argparse
import filecmp
import fnmatch
import os
import re
import shutil
import sys
import datetime
import json

parser = argparse.ArgumentParser()
parser.add_argument('input_file', nargs='*', help='Input JS files which builtins generated from')
parser.add_argument('--input-directory', help='All JS files will be used as input from this directory.')
parser.add_argument('--output', help='path to output cpp or h file')
args = parser.parse_args()

copyrightText = """ *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
 */\n
"""

generatorString = "/* Generated by %s do not hand edit. */\n" % os.path.basename(__file__)

functionHeadRegExp = re.compile(r"function\s+\w+\s*\(.*?\)", re.MULTILINE | re.S)
functionNameRegExp = re.compile(r"function\s+(\w+)\s*\(", re.MULTILINE | re.S)
functionParameterFinder = re.compile(r"^function\s+(?:\w+)\s*\(((?:\s*\w+)?\s*(?:\s*,\s*\w+)*)?\s*\)", re.MULTILINE | re.S)

multilineCommentRegExp = re.compile(r"\/\*.*?\*\/", re.MULTILINE | re.S)
singleLineCommentRegExp = re.compile(r"\/\/.*?\n", re.MULTILINE | re.S)

def getCopyright(source):
    copyrightBlock = multilineCommentRegExp.findall(source)[0]
    copyrightBlock = copyrightBlock[:copyrightBlock.index("Redistribution")]
    copyRightLines = []

    for line in copyrightBlock.split("\n"):
        line = line.replace("/*", "")
        line = line.replace("*/", "")
        line = line.replace("*", "")
        line = line.replace("Copyright", "")
        line = line.replace("copyright", "")
        line = line.replace("(C)", "")
        line = line.replace("(c)", "")
        line = line.strip()
        if len(line) == 0:
            continue

        copyRightLines.append(line)
    
    return list(set(copyRightLines))


def getFunctions(source):

    source = multilineCommentRegExp.sub("/**/", singleLineCommentRegExp.sub("//\n", source))

    matches = [ f for f in functionHeadRegExp.finditer(source)]
    functionBounds = []
    start = 0
    end = 0
    for match in matches:
        start = match.start()
        if start < end:
            continue
        end = match.end()
        while source[end] != '{':
            end = end + 1
        depth = 1
        end = end + 1
        while depth > 0:
            if source[end] == '{':
                depth = depth + 1
            elif source[end] == '}':
                depth = depth - 1
            end = end + 1
        functionBounds.append((start, end))

    functions = [source[start:end].strip() for (start, end) in functionBounds]
    result = []
    for function in functions:
        function = multilineCommentRegExp.sub("", function)
        functionName = functionNameRegExp.findall(function)[0]
        functionParameters = functionParameterFinder.findall(function)[0].split(',')
        if len(functionParameters[0]) == 0:
            functionParameters = []
            
        result.append((functionName, function, functionParameters))
    return result
        

def generateCode(source):
    inputFile = open(source, "r")
    baseName = os.path.basename(source).replace(".js", "")
    
    source = ""
    for line in inputFile:
        source = source + line
    
    if sys.platform == "cygwin":
        source = source.replace("\r\n", "\n")
    return (baseName, getFunctions(source), getCopyright(source))

def mangleName(object, name):
    qName = object + "." + name
    mangledName = ""
    i = 0
    while i < len(qName):
        if qName[i] == '.':
            mangledName = mangledName + qName[i + 1].upper()
            i = i + 1
        else:
            mangledName = mangledName + qName[i]
        i = i + 1
    return mangledName

builtins = []
copyrights = []
(output_base, _) = os.path.splitext(args.output)

if args.input_directory:
    for file in os.listdir(args.input_directory):
        args.input_file.append(os.path.join(args.input_directory, file))

for file in args.input_file:
    if fnmatch.fnmatch(file, '*.js'):
        (baseName, functions, objectCopyrights) = generateCode(file)
        copyrights.extend(objectCopyrights)
        builtins.append((baseName, functions))

copyrights = list(set(copyrights))

copyrightBody = ""
for copyright in copyrights:
    copyrightBody = copyrightBody +" * Copyright (C) " + copyright + "\n"

builtinsHeader = open(output_base + ".h.tmp", "w")
builtinsImplementation = open(output_base + ".cpp.tmp", "w")
copyrightText = "/*\n" + copyrightBody + copyrightText
builtinsHeader.write("""%s
%s

#ifndef JSCBuiltins_H
#define JSCBuiltins_H

namespace JSC {

class FunctionExecutable;
class Identifier;
class JSGlobalObject;
class SourceCode;
class UnlinkedFunctionExecutable;
class VM;

FunctionExecutable* createBuiltinExecutable(VM&, UnlinkedFunctionExecutable*, const SourceCode&);

""" % (generatorString, copyrightText))

codeReferences = []

for (objectName, functions) in builtins:
    print("Generating bindings for the %s builtin." % objectName)
    builtinsHeader.write("/* %s functions */\n" % objectName)
    for (name, implementation, _) in functions:
        mangledName = mangleName(objectName, name)
        mangledName = mangledName[0].lower() + mangledName[1:] + "Code"
        codeReferences.append((mangledName, name, implementation))
        builtinsHeader.write("extern const char* s_%s;\n" % mangledName)
        builtinsHeader.write("extern const int s_%sLength;\n" % mangledName)
    builtinsHeader.write("\n")
    builtinsHeader.write("#define JSC_FOREACH_%s_BUILTIN(macro) \\\n" % objectName.replace(".", "_").upper())
    for (name, implementation, arguments) in functions:
        mangledName = mangleName(objectName, name)
        builtinsHeader.write("    macro(%s, %s, %d) \\\n" % (name, mangledName, len(arguments)))
    builtinsHeader.write("\n")
    for (name, implementation, arguments) in functions:
        builtinsHeader.write("#define JSC_BUILTIN_%s 1\n" % mangleName(objectName, name).upper())
    builtinsHeader.write("\n\n")
names = []
builtinsHeader.write("#define JSC_FOREACH_BUILTIN(macro)\\\n")
for (codeReference, functionName, source) in codeReferences:
    builtinsHeader.write("    macro(%s, %s, s_%sLength) \\\n" % (codeReference, functionName, codeReference))
    names.append(functionName)

builtinsHeader.write("\n\n")
builtinsHeader.write("#define JSC_FOREACH_BUILTIN_FUNCTION_NAME(macro) \\\n")
for name in sorted(set(names)):
    builtinsHeader.write("    macro(%s) \\\n" % name)
builtinsHeader.write("""

#define JSC_DECLARE_BUILTIN_GENERATOR(codeName, functionName, argumentCount) \\
    FunctionExecutable* codeName##Generator(VM&);

JSC_FOREACH_BUILTIN(JSC_DECLARE_BUILTIN_GENERATOR)
#undef JSC_DECLARE_BUILTIN_GENERATOR

#define JSC_BUILTIN_EXISTS(name) defined JSC_BUILTIN_ ## name

}

#endif

""")

builtinsImplementation.write("""%s
%s

#include "config.h"

#include "JSCBuiltins.h"

#include "BuiltinExecutables.h"
#include "Executable.h"
#include "JSCellInlines.h"
#include "VM.h"

namespace JSC {

"""  % (generatorString, copyrightText))

for (codeReference, name, source) in codeReferences:
    source = "(function " + source[source.index("("):] + ")"
    lines = json.dumps(source)[1:-1].split("\\n")
    sourceLength = len(source)
    source = ""
    for line in lines:
        source = source + ("    \"%s\\n\" \\\n" % line)
    builtinsImplementation.write("const char* s_%s =\n%s;\n\n" % (codeReference, source))
    builtinsImplementation.write("const int s_%sLength = %d;\n\n" % (codeReference, sourceLength + 1)) # + 1 for \n

builtinsImplementation.write("""
#define JSC_DEFINE_BUILTIN_GENERATOR(codeName, functionName, argumentCount) \\
FunctionExecutable* codeName##Generator(VM& vm) \\
{ \\
    return vm.builtinExecutables()->codeName##Executable()->link(vm, vm.builtinExecutables()->codeName##Source()); \\
}

JSC_FOREACH_BUILTIN(JSC_DEFINE_BUILTIN_GENERATOR)
#undef JSC_DEFINE_BUILTIN_GENERATOR
}

""")

builtinsHeader.close()
builtinsImplementation.close()

if (not os.path.exists(output_base + ".h")) or (not filecmp.cmp(output_base + ".h.tmp", output_base + ".h", shallow=False)):
    if (os.path.exists(output_base + ".h")):
        os.remove(output_base + ".h")
    os.rename(output_base + ".h.tmp", output_base + ".h")
else:
    os.remove(output_base + ".h.tmp")

if (not os.path.exists(output_base + ".cpp")) or (not filecmp.cmp(output_base + ".cpp.tmp", output_base + ".cpp", shallow=False)):
    if (os.path.exists(output_base + ".cpp")):
        os.remove(output_base + ".cpp")
    os.rename(output_base + ".cpp.tmp", output_base + ".cpp")
else:
    os.remove(output_base + ".cpp.tmp")
Commit	Line	Data
81345200 A	1	#!/usr/bin/python
	2	# Copyright (C) 2014 Apple Inc. All rights reserved.
	3	#
	4	# Redistribution and use in source and binary forms, with or without
	5	# modification, are permitted provided that the following conditions
	6	# are met:
	7	# 1. Redistributions of source code must retain the above copyright
	8	# notice, this list of conditions and the following disclaimer.
	9	# 2. Redistributions in binary form must reproduce the above copyright
	10	# notice, this list of conditions and the following disclaimer in the
	11	# documentation and/or other materials provided with the distribution.
	12	#
	13	# THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
	14	# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	15	# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
	16	# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
	17	# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
	18	# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
	19	# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
	20	# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
	21	# OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	22	# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	23	# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	24
ed1e77d3	25	import argparse
81345200 A	26	import filecmp
	27	import fnmatch
	28	import os
	29	import re
	30	import shutil
	31	import sys
	32	import datetime
	33	import json
	34
ed1e77d3 A	35	parser = argparse.ArgumentParser()
	36	parser.add_argument('input_file', nargs='*', help='Input JS files which builtins generated from')
	37	parser.add_argument('--input-directory', help='All JS files will be used as input from this directory.')
	38	parser.add_argument('--output', help='path to output cpp or h file')
	39	args = parser.parse_args()
	40
81345200 A	41	copyrightText = """ *
	42	* Redistribution and use in source and binary forms, with or without
	43	* modification, are permitted provided that the following conditions
	44	* are met:
	45	* 1. Redistributions of source code must retain the above copyright
	46	* notice, this list of conditions and the following disclaimer.
	47	* 2. Redistributions in binary form must reproduce the above copyright
	48	* notice, this list of conditions and the following disclaimer in the
	49	* documentation and/or other materials provided with the distribution.
	50	*
	51	* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
	52	* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	53	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
	54	* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
	55	* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
	56	* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
	57	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
	58	* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
	59	* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	60	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	61	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	62	*/\n
	63	"""
	64
	65	generatorString = "/* Generated by %s do not hand edit. */\n" % os.path.basename(__file__)
	66
	67	functionHeadRegExp = re.compile(r"function\s+\w+\s\(.?\)", re.MULTILINE \| re.S)
	68	functionNameRegExp = re.compile(r"function\s+(\w+)\s*\(", re.MULTILINE \| re.S)
ed1e77d3	69	functionParameterFinder = re.compile(r"^function\s+(?:\w+)\s\(((?:\s\w+)?\s(?:\s,\s\w+))?\s*\)", re.MULTILINE \| re.S)
81345200 A	70
	71	multilineCommentRegExp = re.compile(r"\/\.?\*\/", re.MULTILINE \| re.S)
	72	singleLineCommentRegExp = re.compile(r"\/\/.*?\n", re.MULTILINE \| re.S)
	73
	74	def getCopyright(source):
	75	copyrightBlock = multilineCommentRegExp.findall(source)[0]
	76	copyrightBlock = copyrightBlock[:copyrightBlock.index("Redistribution")]
	77	copyRightLines = []
	78
	79	for line in copyrightBlock.split("\n"):
	80	line = line.replace("/*", "")
	81	line = line.replace("*/", "")
	82	line = line.replace("*", "")
	83	line = line.replace("Copyright", "")
	84	line = line.replace("copyright", "")
	85	line = line.replace("(C)", "")
	86	line = line.replace("(c)", "")
	87	line = line.strip()
	88	if len(line) == 0:
	89	continue
	90
	91	copyRightLines.append(line)
	92
	93	return list(set(copyRightLines))
	94
	95
	96
	97	def getFunctions(source):
	98
	99	source = multilineCommentRegExp.sub("/**/", singleLineCommentRegExp.sub("//\n", source))
	100
	101	matches = [ f for f in functionHeadRegExp.finditer(source)]
	102	functionBounds = []
	103	start = 0
	104	end = 0
	105	for match in matches:
	106	start = match.start()
	107	if start < end:
	108	continue
	109	end = match.end()
	110	while source[end] != '{':
	111	end = end + 1
	112	depth = 1
	113	end = end + 1
	114	while depth > 0:
	115	if source[end] == '{':
	116	depth = depth + 1
	117	elif source[end] == '}':
	118	depth = depth - 1
	119	end = end + 1
	120	functionBounds.append((start, end))
	121
	122	functions = [source[start:end].strip() for (start, end) in functionBounds]
	123	result = []
	124	for function in functions:
	125	function = multilineCommentRegExp.sub("", function)
	126	functionName = functionNameRegExp.findall(function)[0]
	127	functionParameters = functionParameterFinder.findall(function)[0].split(',')
	128	if len(functionParameters[0]) == 0:
	129	functionParameters = []
	130
	131	result.append((functionName, function, functionParameters))
	132	return result
	133
134
135	def generateCode(source):
136	inputFile = open(source, "r")
137	baseName = os.path.basename(source).replace(".js", "")
138
139	source = ""
140	for line in inputFile:
141	source = source + line
142
143	if sys.platform == "cygwin":
144	source = source.replace("\r\n", "\n")
145	return (baseName, getFunctions(source), getCopyright(source))
146
147	def mangleName(object, name):
148	qName = object + "." + name
149	mangledName = ""
150	i = 0
151	while i < len(qName):
152	if qName[i] == '.':
153	mangledName = mangledName + qName[i + 1].upper()
154	i = i + 1
155	else:
156	mangledName = mangledName + qName[i]
157	i = i + 1
158	return mangledName
159
160	builtins = []
ed1e77d3 A	161	copyrights = []
ed1e77d3 A	162	(output_base, _) = os.path.splitext(args.output)
81345200	163
ed1e77d3 A	164	if args.input_directory:
	165	for file in os.listdir(args.input_directory):
	166	args.input_file.append(os.path.join(args.input_directory, file))
81345200	167
ed1e77d3	168	for file in args.input_file:
81345200 A	169	if fnmatch.fnmatch(file, '*.js'):
	170	(baseName, functions, objectCopyrights) = generateCode(file)
	171	copyrights.extend(objectCopyrights)
	172	builtins.append((baseName, functions))
	173
	174	copyrights = list(set(copyrights))
	175
	176	copyrightBody = ""
	177	for copyright in copyrights:
	178	copyrightBody = copyrightBody +" * Copyright (C) " + copyright + "\n"
	179
	180	builtinsHeader = open(output_base + ".h.tmp", "w")
	181	builtinsImplementation = open(output_base + ".cpp.tmp", "w")
	182	copyrightText = "/*\n" + copyrightBody + copyrightText
	183	builtinsHeader.write("""%s
	184	%s
	185
	186	#ifndef JSCBuiltins_H
	187	#define JSCBuiltins_H
	188
	189	namespace JSC {
	190
	191	class FunctionExecutable;
	192	class Identifier;
	193	class JSGlobalObject;
	194	class SourceCode;
	195	class UnlinkedFunctionExecutable;
	196	class VM;
	197
	198	FunctionExecutable* createBuiltinExecutable(VM&, UnlinkedFunctionExecutable*, const SourceCode&);
	199
	200	""" % (generatorString, copyrightText))
	201
	202	codeReferences = []
	203
	204	for (objectName, functions) in builtins:
	205	print("Generating bindings for the %s builtin." % objectName)
	206	builtinsHeader.write("/* %s functions */\n" % objectName)
	207	for (name, implementation, _) in functions:
	208	mangledName = mangleName(objectName, name)
	209	mangledName = mangledName[0].lower() + mangledName[1:] + "Code"
	210	codeReferences.append((mangledName, name, implementation))
	211	builtinsHeader.write("extern const char* s_%s;\n" % mangledName)
	212	builtinsHeader.write("extern const int s_%sLength;\n" % mangledName)
	213	builtinsHeader.write("\n")
	214	builtinsHeader.write("#define JSC_FOREACH_%s_BUILTIN(macro) \\\n" % objectName.replace(".", "_").upper())
	215	for (name, implementation, arguments) in functions:
	216	mangledName = mangleName(objectName, name)
	217	builtinsHeader.write(" macro(%s, %s, %d) \\\n" % (name, mangledName, len(arguments)))
	218	builtinsHeader.write("\n")
	219	for (name, implementation, arguments) in functions:
	220	builtinsHeader.write("#define JSC_BUILTIN_%s 1\n" % mangleName(objectName, name).upper())
	221	builtinsHeader.write("\n\n")
	222	names = []
	223	builtinsHeader.write("#define JSC_FOREACH_BUILTIN(macro)\\\n")
	224	for (codeReference, functionName, source) in codeReferences:
	225	builtinsHeader.write(" macro(%s, %s, s_%sLength) \\\n" % (codeReference, functionName, codeReference))
	226	names.append(functionName)
	227
	228	builtinsHeader.write("\n\n")
	229	builtinsHeader.write("#define JSC_FOREACH_BUILTIN_FUNCTION_NAME(macro) \\\n")
	230	for name in sorted(set(names)):
	231	builtinsHeader.write(" macro(%s) \\\n" % name)
	232	builtinsHeader.write("""
233
234	#define JSC_DECLARE_BUILTIN_GENERATOR(codeName, functionName, argumentCount) \\
235	FunctionExecutable* codeName##Generator(VM&);
236
237	JSC_FOREACH_BUILTIN(JSC_DECLARE_BUILTIN_GENERATOR)
238	#undef JSC_DECLARE_BUILTIN_GENERATOR
239
240	#define JSC_BUILTIN_EXISTS(name) defined JSC_BUILTIN_ ## name
241
242	}
243
244	#endif
245
246	""")
247
248	builtinsImplementation.write("""%s
249	%s
250
251	#include "config.h"
252
253	#include "JSCBuiltins.h"
254
255	#include "BuiltinExecutables.h"
256	#include "Executable.h"
257	#include "JSCellInlines.h"
258	#include "VM.h"
259
260	namespace JSC {
261
262	""" % (generatorString, copyrightText))
263
264	for (codeReference, name, source) in codeReferences:
265	source = "(function " + source[source.index("("):] + ")"
266	lines = json.dumps(source)[1:-1].split("\\n")
267	sourceLength = len(source)
268	source = ""
269	for line in lines:
270	source = source + (" \"%s\\n\" \\\n" % line)
271	builtinsImplementation.write("const char* s_%s =\n%s;\n\n" % (codeReference, source))
272	builtinsImplementation.write("const int s_%sLength = %d;\n\n" % (codeReference, sourceLength + 1)) # + 1 for \n
273
274	builtinsImplementation.write("""
81345200 A	275	#define JSC_DEFINE_BUILTIN_GENERATOR(codeName, functionName, argumentCount) \\
	276	FunctionExecutable* codeName##Generator(VM& vm) \\
	277	{ \\
ed1e77d3	278	return vm.builtinExecutables()->codeName##Executable()->link(vm, vm.builtinExecutables()->codeName##Source()); \\
81345200 A	279	}
	280
	281	JSC_FOREACH_BUILTIN(JSC_DEFINE_BUILTIN_GENERATOR)
	282	#undef JSC_DEFINE_BUILTIN_GENERATOR
	283	}
	284
	285	""")
	286
	287	builtinsHeader.close()
	288	builtinsImplementation.close()
	289
	290	if (not os.path.exists(output_base + ".h")) or (not filecmp.cmp(output_base + ".h.tmp", output_base + ".h", shallow=False)):
ed1e77d3 A	291	if (os.path.exists(output_base + ".h")):
ed1e77d3 A	292	os.remove(output_base + ".h")
81345200 A	293	os.rename(output_base + ".h.tmp", output_base + ".h")
	294	else:
	295	os.remove(output_base + ".h.tmp")
	296
	297	if (not os.path.exists(output_base + ".cpp")) or (not filecmp.cmp(output_base + ".cpp.tmp", output_base + ".cpp", shallow=False)):
ed1e77d3 A	298	if (os.path.exists(output_base + ".cpp")):
ed1e77d3 A	299	os.remove(output_base + ".cpp")
81345200 A	300	os.rename(output_base + ".cpp.tmp", output_base + ".cpp")
	301	else:
	302	os.remove(output_base + ".cpp.tmp")