chameleon.core 1.0b12

Support template fragments, e.g. documents with more than one root element. [malthe]

Added namespace prefix ‘xml’ to default namespace mapping. [malthe]

Fixed root cause of issue with self-closing tags; an empty element text is now correctly differentiated from a self-closed tag (which does not have this attribute set). [malthe]

Removed support for compilation without lxml. [malthe]

Use xml.parsers.expat to parse template document instead of using lxml. This gives much greater control over edge-cases and allows us to lose many workarounds. [malthe]

Do not use XPath-expressions during compilation if lxml is not available. [malthe]

Ensure argument uniqueness for macro functions over the combined set of scope and keyword arguments. [hannosch]

Protect all itertools.chain statements with an encapsulating set() to ensure uniqueness. [hannosch]

Ensure that function arguments passed into macros are unique. [hannosch]

Removed unused imports, thanks to PyFlakes. [hannosch]

Removed warning about utf-8 as a recommend default encoding. There is no apparent speed improvement anymore. [hannosch]

Use sourcecodegen package to generate Python-code from AST; this is done to avoid generating code using the compiler.pycodegen module, which has serious issues. Interestingly, this approach cuts compilation time in half. [malthe]

Bind code-generation utilities in closure as well. [malthe]

Reworked global scope initialization; we now bind these using a closure. [malthe]

Reworked repeat-variable logic. An iterator would be realized at any rate, so let’s not try to be clever. [malthe]

Made repeat-variable work with iterables which do not announce their length before execution. [malthe]

Added namespace attribute support. [malthe]

Static attributes are now computed such that attributes are omitted according to a ns_omit flag, and they are always prefixed according to the element’s nsmap. [malthe]

Do not fix-up self-closing tags if an XML declaration is present without a DOCTYPE. [malthe]

Prefix tags which do not belong to the default namespace. [malthe]

Do not apply namespace attribute ‘xmlns’ to root element if not set. [malthe]

Fixed tuple unpacking in repeat loops. [malthe]

Use a custom simple BufferIO class for the lxml.etree parser instead of standard StringIO. [hannosch]

This was the wrong fix, however; what needed to be changed is that the class of the marker isntance must be available at module-scope. [malthe]

Changed generation.marker back to a normal object instance. Otherwise we get PicklingError: Can’t pickle <class ‘chameleon.core.generation.marker’>: it’s not the same object as chameleon.core.generation.marker. [hannosch]

Changed two isinstance checks to check for basestring instead of str or unicode. [hannosch]

Added label property to expressions; this allows providing a human-readable label for values that are going to evaluated. [malthe]

Normalize METAL slot names to ensure they’re valid Python variable names. Non-valid characters are converted to underscore. [malthe]

Renamed dynamic scope variable to econtext in order to reduce compatibility issues with ZPT. [malthe]

Fixed issue where multiple defines would cause integrity issues. [malthe]

Avoid self-closing tags that are not allowed in transitional HTML. [malthe]

Use custom serialization method to serialize static default translation blocks; we can’t rely on lxml for sane output. [malthe]

Make default symbol available to dynamic attribute evaluations. [malthe]

Visit evaluation before assignment in order to support assignments that rely on the same name in the dynamic variable scope. [malthe]

Conditions may now be inverted; this facilitates the bug-fix of an issue where omit conditions were multi-part. [malthe]

Make sure that arguments passed into the render-method are introduced in every nested scope. [malthe]

Added translation language to main scope and make sure redefining it inside a closure does not cause issues with nested scope locals. [malthe]

Only pretend to delete variables; this improves performance and guarantees that we don’t attempt to delete a variables which is used in a nested scope (closure). It works, because the code generation transform silently drops the delete-statements, but removes them from its internal scope dictionary. [malthe]

Remove variables from scope dictionary upon block exit. [malthe]

Split out compile-function such that we can always write the source code to disk in debug-mode. [malthe]

Correctly transfer scope to callback-function that will fill macro slot contents. Previously, we would precompute fill-slots, but this was wrong since it’s expected to inherit the scope of the macro currently in use. [malthe]

Made error handler compatible with Python 2.4 [malthe]

Maintain symbol mappings for joined expressions. [malthe]

Fixed interpolation edge where a right curly brace not part of an interpolation expression would cancel a succeeding interpolation. [malthe]

Pass target_language when using macros. [malthe]

When validating inserted content (in debug-mode), make sure we wrap content as a proper HTML document, including HTML entity definitions. [malthe]

If an element does not belong to a known namespace, assume it’s the default namespace. This change is relevant after the introduction of fallback elements. [malthe]

XML declarations should be printed with or without a doctype element, and only if the template includes it. [malthe]

Encode code annotations if encoding is required. [malthe]

Added filename to XML syntax error exception message. [malthe]

Fixed bug where a template would be wrapped with namespace definitions even if an XML header is present. [malthe]

Added support for fallback element. [malthe]

Enabled error handler for macro renderer. [malthe]

Added error handler which adds debugging information to the exception object’s string output (in debug-mode only). [malthe]

Fixed translation issues (see recently added tests). [malthe]

Refactored string coercion. [malthe]

Fixed issue with parsing expression containing curly braces. [malthe]

Added support for unscoped variable assignment. [malthe]

Added support for translating dynamic body text (used in interpolation expressions). [malthe]

Added support for macros prebound to keyword arguments. [malthe]

Fixed bugs related to temporary variables with loops and conditions. [malthe]

Set default value for auto-reload based on the CHAMELEON_DEBUG environment variable check. [malthe]

Added method to generate unscoped temporary variables. [malthe]

Make lxml a hard dependency for now until the lxml-less logic is stable. [wichert]

TemplateLoader now checks a default_parser class attribute if no parser is specified. [wichert]

Added support for dynamic skip condition. [malthe]

Fixed bug where an AttributeError would be raised when using the file cache. [malthe]

First release.