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Shell: Add support for functions

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This implementation does not have support for 'return' yet.
This commit is contained in:
AnotherTest 2020-09-13 15:54:33 +04:30 • committed by Andreas Kling
parent 519aa2048a
commit d1550ea64f
6 changed files with 264 additions and 5 deletions
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4
Shell/Parser.h
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@ -45,6 +45,7 @@ public:
private:
RefPtr<AST::Node> parse_toplevel();
RefPtr<AST::Node> parse_sequence();
RefPtr<AST::Node> parse_function_decl();
RefPtr<AST::Node> parse_and_logical_sequence();
RefPtr<AST::Node> parse_or_logical_sequence();
RefPtr<AST::Node> parse_variable_decls();
@ -109,8 +110,11 @@ toplevel :: sequence?
sequence :: variable_decls? or_logical_sequence terminator sequence
| variable_decls? or_logical_sequence '&' sequence
| variable_decls? or_logical_sequence
| variable_decls? function_decl (terminator sequence)?
| variable_decls? terminator sequence
function_decl :: identifier '(' (ws* identifier)* ')' ws* '{' toplevel '}'
or_logical_sequence :: and_logical_sequence '|' '|' and_logical_sequence
| and_logical_sequence