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Update playground/dynamic_headers - Issue 1530
This commit is contained in:
Thomas Nagy
parent
3064694440
commit
15d14c7bdf
@ -1,5 +0,0 @@
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#include "a.h"
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int main() {
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return 0;
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}
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@ -1,77 +1,109 @@
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#! /usr/bin/env python
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# encoding: utf-8
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# Thomas Nagy, 2010 (ita)
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VERSION='0.0.1'
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APPNAME='dynamic_header_test'
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top = '.'
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out = 'build'
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from waflib import Task, Errors
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from waflib.Tools import c
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def options(opt):
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opt.load('compiler_cxx')
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opt.load('compiler_c')
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def configure(conf):
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conf.load('compiler_cxx')
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conf.load('compiler_c')
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def build(bld):
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bld.program(source='main.cpp', target='app', includes='.')
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bld(features = 'c cprogram',
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target = 'test',
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source = 'src/main.c src/test.c',
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includes = 'src')
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# --------------------------------------------------------------------
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# Dynamic header creation, the file "a.h" from main.cpp is created
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# during the build. You may use this code sample to create more complicated
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# dynamic header generators
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class mock(Task.Task):
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run_str = 'cp ${SRC} ${TGT}'
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color = 'BLUE'
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from waflib import Task
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from waflib.Tools.cxx import cxx
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class test(Task.Task):
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run_str = 'touch ${TGT}'
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# it would be better to replace the scan() method, but this is doable too
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def runnable_status(self):
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ret = super(cxx, self).runnable_status()
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try:
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shared = self.generator.bld.shared_tasks
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except AttributeError:
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shared = self.generator.bld.shared_tasks = {}
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ret = self.runnable_status_dynamic_headers2()
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if ret != Task.ASK_LATER:
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if ret != Task.ASK_LATER and not getattr(self, 'all_mock_done', False):
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self.all_mock_done = True # run once
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bld = self.generator.bld
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add = False
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# first pass over the unresolved files found by the scanner
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for x in self.generator.bld.raw_deps[self.uid()]:
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if x == 'a.h':
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tgt = self.generator.path.find_or_declare(x)
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try:
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mock_tasks = bld.mock_tasks
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except AttributeError:
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mock_tasks = bld.mock_tasks = {}
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for x in bld.raw_deps[self.uid()]:
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if x.startswith('mock_'):
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h_file = x[5:]
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for k in [self.inputs[0].parent] + self.generator.includes_nodes:
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h_node = k.find_node(h_file)
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if h_node:
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break
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if not h_node:
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raise Errors.WafError('no header for %s' % x)
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m_node = h_node.parent.find_or_declare(x)
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try:
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tsk = shared[tgt]
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tsk = mock_tasks[m_node]
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except KeyError:
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tsk = shared[tgt] = self.generator.create_task('test', [], tgt)
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self.set_run_after(tsk)
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self.generator.bld.producer.outstanding.append(tsk)
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add = True
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tsk = mock_tasks[m_node] = self.generator.create_task('mock', [h_node], [m_node])
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bld.producer.outstanding.insert(0, tsk)
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bld.producer.total += 1
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# preprocessor cache :-/
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try:
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for key in list(bld.cache_nd.keys()):
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if key[1] == x:
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del bld.cache_nd[key]
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except (KeyError, AttributeError):
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pass
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add = True
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self.set_run_after(tsk)
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if add:
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# remove cache entries to force a clean scanner execution
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# recompute the task signature
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delattr(self, 'cache_sig')
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self.generator.bld.cache_nd = {}
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del self.generator.bld.task_sigs[(self.uid(), 'imp')] # will have to rescan the C file
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del bld.task_sigs[(self.uid(), 'imp')]
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return self.runnable_status()
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# second pass over the existing nodes - corresponding tasks are still necessary
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for x in self.generator.bld.node_deps[self.uid()]:
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if x.name == 'a.h':
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for x in bld.node_deps[self.uid()]:
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if x.name.startswith('mock_'):
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h_node = x.parent.get_src().find_node(x.name[5:])
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if not h_node:
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raise Errors.WafError('no header for %s' % x.name)
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try:
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tsk = shared[x]
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tsk = mock_tasks[x]
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except KeyError:
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tsk = shared[x] = self.generator.create_task('test', [], x)
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self.set_run_after(tsk)
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self.generator.bld.producer.outstanding.append(tsk)
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add = True
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tsk = mock_tasks[x] = self.generator.create_task('mock', [h_node], [x])
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bld.producer.outstanding.insert(0, tsk)
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bld.producer.total += 1
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add = True
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self.set_run_after(tsk)
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# node get_bld_sig cache :-/
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try:
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delattr(x, 'cache_sig')
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except AttributeError:
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pass
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if add:
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# no need to rescan anything, but recompute the signature after the dependent task is executed
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# recompute the task signature
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delattr(self, 'cache_sig')
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return self.runnable_status()
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return ret
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cxx.runnable_status = runnable_status
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c.c.runnable_status_dynamic_headers2 = c.c.runnable_status
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c.c.runnable_status = runnable_status
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@ -1,109 +0,0 @@
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#! /usr/bin/env python
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from waflib import Task, Errors
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from waflib.Tools import c
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def options(opt):
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opt.load('compiler_c')
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def configure(conf):
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conf.load('compiler_c')
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def build(bld):
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bld(features = 'c cprogram',
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target = 'test',
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source = 'src/main.c src/test.c',
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includes = 'src')
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class mock(Task.Task):
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run_str = 'cp ${SRC} ${TGT}'
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color = 'BLUE'
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# it would be better to replace the scan() method, but this is doable too
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def runnable_status(self):
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ret = self.runnable_status_dynamic_headers2()
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if ret != Task.ASK_LATER and not getattr(self, 'all_mock_done', False):
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self.all_mock_done = True # run once
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bld = self.generator.bld
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add = False
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try:
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mock_tasks = bld.mock_tasks
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except AttributeError:
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mock_tasks = bld.mock_tasks = {}
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for x in bld.raw_deps[self.uid()]:
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if x.startswith('mock_'):
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h_file = x[5:]
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for k in [self.inputs[0].parent] + self.generator.includes_nodes:
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h_node = k.find_node(h_file)
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if h_node:
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break
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if not h_node:
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raise Errors.WafError('no header for %s' % x)
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m_node = h_node.parent.find_or_declare(x)
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try:
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tsk = mock_tasks[m_node]
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except KeyError:
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tsk = mock_tasks[m_node] = self.generator.create_task('mock', [h_node], [m_node])
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bld.producer.outstanding.insert(0, tsk)
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bld.producer.total += 1
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# preprocessor cache :-/
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try:
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for key in list(bld.cache_nd.keys()):
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if key[1] == x:
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del bld.cache_nd[key]
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except (KeyError, AttributeError):
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pass
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add = True
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self.set_run_after(tsk)
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if add:
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# recompute the task signature
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delattr(self, 'cache_sig')
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del bld.task_sigs[(self.uid(), 'imp')]
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return self.runnable_status()
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for x in bld.node_deps[self.uid()]:
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if x.name.startswith('mock_'):
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h_node = x.parent.get_src().find_node(x.name[5:])
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if not h_node:
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raise Errors.WafError('no header for %s' % x.name)
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try:
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tsk = mock_tasks[x]
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except KeyError:
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tsk = mock_tasks[x] = self.generator.create_task('mock', [h_node], [x])
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bld.producer.outstanding.insert(0, tsk)
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bld.producer.total += 1
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add = True
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self.set_run_after(tsk)
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# node get_bld_sig cache :-/
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try:
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delattr(x, 'cache_sig')
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except AttributeError:
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pass
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if add:
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# recompute the task signature
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delattr(self, 'cache_sig')
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return self.runnable_status()
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return ret
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c.c.runnable_status_dynamic_headers2 = c.c.runnable_status
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c.c.runnable_status = runnable_status
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