If Else Statements

Data Structures
struct	ast_conditional_statement
	Describes a single if-then-do statement. More...
struct	ast_if_else
	Describes a complete set of if-elseif-else statements. More...

Functions
void	ast_extend_if_else (ast_if_else *conditional_statements, ast_list *new_statement)
	Adds an additional conditional (ha..) to an existing if-else statement. More...
ast_conditional_statement *	ast_new_conditional_statement (ast_statement *statement, ast_expression *condition)
	Creates and returns a new conditional statement. More...
ast_if_else *	ast_new_if_else (ast_conditional_statement *if_condition, ast_statement *else_condition)
	Creates a new if-then-else-then statement. More...

Detailed Description

Function Documentation

void ast_extend_if_else	(	ast_if_else *	conditional_statements,
		ast_list *	new_statements
	)

Adds an additional conditional (ha..) to an existing if-else statement.

Parameters

conditional_statements	- the existing if-else tree.
new_statement	- The new statement to add at the end of the existing if-then conditions, but before any else_condtion.

ast_conditional_statement* ast_new_conditional_statement	(	ast_statement *	statement,
		ast_expression *	condition
	)

Creates and returns a new conditional statement.

Parameters

statement	- what to run if the condition holds true.
condtion	- the condition on which statement is run.

ast_if_else* ast_new_if_else	(	ast_conditional_statement *	if_condition,
		ast_statement *	else_condition
	)

Creates a new if-then-else-then statement.

Parameters

if_condition	- the conditional statement.
else_condition	- What to do if no conditional statements are executed. This can be NULL.

This node also supports "if then elseif then else then" statements, and uses the ast_extend_if_else function to append a new ast_conditional_statement to the end of a list of if-else conditions. Priority of exectuion is given to items added first.