Slang Source Backend

Slang source backend exports for CrossGL Translator.

Slang AST Node definitions

class crosstl.backend.slang.SlangAst.ExportNode(exported_items)

Bases: ASTNode

Node representing an export statement

class crosstl.backend.slang.SlangAst.ExtensionNode(extended_type, methods)

Bases: ASTNode

Node representing a Slang extension

class crosstl.backend.slang.SlangAst.GenericNode(name, constraints=None)

Bases: ASTNode

Node representing a generic type parameter

class crosstl.backend.slang.SlangAst.ImportNode(module_path, imported_items=None, alias=None)

Bases: ASTNode

Node representing an import statement

class crosstl.backend.slang.SlangAst.TypedefNode(name, target_type)

Bases: ASTNode

Node representing a type alias

Lexer for importing Slang source into CrossGL Translator.

class crosstl.backend.slang.SlangLexer.SlangLexer(code)

Bases: object

Tokenize Slang source for the Slang backend parser.

classmethod from_file(filepath, chunk_size=8192)

Create a lexer instance from a Slang source file.

Return type:

SlangLexer

token_generator()

Yield Slang tokens while skipping whitespace and comments.

Return type:

Iterator[Tuple[str, str]]

tokenize()

Return the full token stream as (token_type, text) tuples.

Return type:

List[Tuple[str, str]]

Parser for Slang source AST construction.

class crosstl.backend.slang.SlangParser.SlangParser(tokens)

Bases: object

Parse Slang tokens into the Slang backend AST.

eat(token_type)

Consume the current token when it matches token_type.

parse()

Parse the complete Slang token stream into a shader AST.

parse_shader()

Parse top-level Slang declarations, functions, and cbuffers.

skip_comments()

Advance past comment tokens before parsing syntax.

Reverse code generator that emits CrossGL from Slang AST nodes.

class crosstl.backend.slang.SlangCrossGLCodeGen.SlangToCrossGLConverter

Bases: object

Serialize Slang backend AST nodes back into CrossGL source.

generate(ast)

Generate complete CrossGL source from a parsed Slang AST.

generate_expression(expr, is_main=False)

Render a Slang backend expression node as CrossGL syntax.

generate_function(func, indent=1)

Render one Slang function node as a CrossGL function.

map_semantic(semantic)

Map a Slang semantic to CrossGL semantic annotation syntax.

map_type(slang_type)

Map a Slang type name to the closest CrossGL type name.