Geoff Romer 6c3e1f6d7c Revise README and add subdir READMEs (#1023) 4 年之前
..
BUILD 2017eb4da0 Initial implementation of block string literals following lexical_conventions/string_literals.md. (#1028) 4 年之前
README.md 6c3e1f6d7c Revise README and add subdir READMEs (#1023) 4 年之前
bison_wrap.h 057b9fe253 Clean up remaining executable_semantics clang-tidy warnings (#906) 4 年之前
format_grammar.py 2017eb4da0 Initial implementation of block string literals following lexical_conventions/string_literals.md. (#1028) 4 年之前
format_grammar_test.py ffc2be92d6 Add carbon to a couple python imports for correctness (#1033) 4 年之前
lexer.lpp 2017eb4da0 Initial implementation of block string literals following lexical_conventions/string_literals.md. (#1028) 4 年之前
parse.cpp ec2f8e64e2 Support parsing Carbon files from strings. (#954) 4 年之前
parse.h ec2f8e64e2 Support parsing Carbon files from strings. (#954) 4 年之前
parse_and_lex_context.cpp 70797e8bf8 Mass rename SourceLoc and Tag (#860) 4 年之前
parse_and_lex_context.h 2017eb4da0 Initial implementation of block string literals following lexical_conventions/string_literals.md. (#1028) 4 年之前
parse_test.cpp eda43faa5a Note namespace and static recommendations in C++ style guide (#1041) 4 年之前
parse_test_matchers.h dc5e62fc7a Support parsing and testing unimplemented expressions (#957) 4 年之前
parse_test_matchers_internal.h 92903afbd5 clang-tidy pass on executable_semantics (#963) 4 年之前
parser.ypp 50263483d8 Add name accessor to NamedEntityView (#994) 4 年之前
unimplemented_example_test.cpp eda43faa5a Note namespace and static recommendations in C++ style guide (#1041) 4 年之前

README.md

The code in this directory is responsible for translating Carbon source code to the AST defined in ast. It consists primarily of a Flex lexer defined in lexer.lpp and a Bison grammar defined in parser.ypp.

It is possible to define and test a new expression syntax without defining its semantics by using the UnimplementedExpression AST node type and the same techniques can be applied to other kinds of AST nodes as needed. See the handling of the UNIMPL_EXAMPLE token for an example of how this is done, and see unimplemented_example_test.cpp for an example of how to test it.