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GDScript: Add lambda syntax parsing

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Lambda syntax is the same as a the function syntax (using the same
`func` keyword) except that the name is optional and it can be embedded
anywhere an expression is expected. E.g.:

    func _ready():
        var my_lambda = func(x):
            print(x)
        my_lambda.call("hello")
This commit is contained in:
George Marques 2021-03-25 10:36:29 -03:00
parent f879a08a62
commit c6e66a43b0
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GPG key ID: 046BD46A3201E43D
6 changed files with 229 additions and 68 deletions
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3
modules/gdscript/gdscript_tokenizer.h
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@ -217,6 +217,7 @@ private:
Token last_newline;
int pending_indents = 0;
List<int> indent_stack;
List<List<int>> indent_stack_stack; // For lambdas, which require manipulating the indentation point.
List<char32_t> paren_stack;
char32_t indent_char = '\0';
int position = 0;
@ -263,6 +264,8 @@ public:
void set_multiline_mode(bool p_state);
bool is_past_cursor() const;
static String get_token_name(Token::Type p_token_type);
void push_expression_indented_block(); // For lambdas, or blocks inside expressions.
void pop_expression_indented_block(); // For lambdas, or blocks inside expressions.
GDScriptTokenizer();
};