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Implemented blueprints https://blueprints.launchpad.net/appy/+spec/gen-create-root-objects, https://blueprints.launchpad.net/appy/+spec/gen-get-flavour and https://blueprints.launchpad.net/appy/+spec/pod-define-variables

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This commit is contained in:
Gaetan Delannay 2009-07-10 15:01:50 +02:00
parent ec17f900a6
commit 10eea7d735
19 changed files with 1770 additions and 1644 deletions
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19
pod/buffers.py
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@ -21,7 +21,8 @@ import re
from appy.pod import PodError, XML_SPECIAL_CHARS
from appy.pod.elements import *
from appy.pod.actions import IfAction, ElseAction, ForAction, NullAction
from appy.pod.actions import IfAction, ElseAction, ForAction, VariableAction, \
NullAction
# ------------------------------------------------------------------------------
class ParsingError(Exception): pass
@ -62,6 +63,12 @@ ELSE_WITHOUT_IF = 'No previous "if" statement could be found for this "else" ' \
ELSE_WITHOUT_NAMED_IF = 'I could not find an "if" statement named "%s".'
BAD_FOR_EXPRESSION = 'Bad "for" expression "%s". A "for" expression ' + \
FOR_EXPRESSION
BAD_VAR_EXPRESSION = 'Bad variable definition "%s". A variable definition ' \
'must have the form {name} = {expression}. {name} must be a Python-' \
'compliant variable name. {expression} is a Python expression. When ' \
'encountering such a statement, pod will define, in the specified part ' \
'of the document, a variable {name} whose value will be the evaluated ' \
'{expression}.'
EVAL_EXPR_ERROR = 'Error while evaluating expression "%s". %s'
NULL_ACTION_ERROR = 'There was a problem with this action. Possible causes: ' \
'(1) you specified no action (ie "do text") while not ' \
@ -168,8 +175,9 @@ class FileBuffer(Buffer):
# ------------------------------------------------------------------------------
class MemoryBuffer(Buffer):
actionRex = re.compile('(?:(\w+)\s*\:\s*)?do\s+(\w+)(-)?' \
'(?:\s+(for|if|else)\s*(.*))?')
'(?:\s+(for|if|else|with)\s*(.*))?')
forRex = re.compile('\s*([\w\-_]+)\s+in\s+(.*)')
varRex = re.compile('\s*([\w\-_]+)\s+=\s+(.*)')
def __init__(self, env, parent):
Buffer.__init__(self, env, parent)
self.content = u''
@ -338,6 +346,13 @@ class MemoryBuffer(Buffer):
iter, subExpr = forRes.groups()
self.action = ForAction(statementName, self, subExpr, podElem,
minus, iter, source, fromClause)
elif actionType == 'with':
varRes = MemoryBuffer.varRex.match(subExpr.strip())
if not varRes:
raise ParsingError(BAD_VAR_EXPRESSION % subExpr)
varName, subExpr = varRes.groups()
self.action = VariableAction(statementName, self, subExpr,
podElem, minus, varName, source, fromClause)
else: # null action
if not fromClause:
raise ParsingError(NULL_ACTION_ERROR)