knit_script.knit_script_interpreter.expressions.formatted_string module

Produces formatted strings.

This module provides the Formatted_String_Value class, which implements formatted string expressions following Python f-string conventions. It handles the evaluation and concatenation of mixed string literals and expressions within formatted string contexts.

class Formatted_String_Value(parser_node, expressions)

Bases: Expression

Follows python fstring conventions.

The Formatted_String_Value class implements formatted string expressions that mirror Python’s f-string functionality. It takes a list of expressions that represent the components of a formatted string (both literal string parts and embedded expressions) and evaluates them in sequence to produce a concatenated result.

This allows knit script programs to use dynamic string formatting similar to Python f-strings,

where expressions can be embedded within string literals and evaluated at runtime to produce formatted output.

expressions

List of expressions in order for string formatting, including both string literals and embedded expressions.

Type:

list[Expression]

Parameters:

• parser_node (LRStackNode)

• expressions (list[Expression])

__init__(parser_node, expressions)

Initialize the Formatted_String_Value.

Parameters:

• parser_node (LRStackNode) – The parser node from the parse tree.

• expressions (list[Expression]) – List of expressions in order for string formatting, representing the components of the formatted string.

evaluate(context)

Evaluate the expression to produce a formatted string.

Evaluates each component expression in sequence and concatenates their string representations to produce the final formatted string result.

Parameters:

context (Knit_Script_Context) – The current context of the knit_script_interpreter.

Returns:

The concatenated result of evaluating all component expressions and converting them to strings.

Return type:

str

property line_number: int

Get the line number of the symbol that generated this statement.

Returns:

The line number where this element appears in the source file.

Return type:

int

property location: Location

Get the location of this symbol in KnitScript file.

Returns:

The location of this symbol in the source file, including file name, line number, and position information.

Return type:

Location