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#include "ast_accessors.h"
static struct ast *_get_from_command(struct ast *ast, size_t index)
{
(void)ast;
(void)index;
return NULL;
}
static struct ast *_get_from_if(struct ast *ast, size_t index)
{
switch (index)
{
case 0:
return ((struct ast_if *)ast)->condition;
case 1:
return ((struct ast_if *)ast)->then_body;
case 2:
return ((struct ast_if *)ast)->else_body;
default:
return NULL;
}
}
static struct ast *_get_from_list(struct ast *ast, size_t index)
{
if (index >= ((struct ast_list *)ast)->nb_children)
{
return NULL;
}
return ((struct ast_list *)ast)->children[index];
}
static struct ast *_get_from_logical(struct ast *ast, size_t index)
{
switch (index)
{
case 0:
return ((struct ast_logical *)ast)->left;
case 1:
return ((struct ast_logical *)ast)->right;
default:
return NULL;
}
}
static struct ast *_get_from_pipeline(struct ast *ast, size_t index)
{
switch (index)
{
case 0:
return ((struct ast_pipeline *)ast)->left;
case 1:
return ((struct ast_pipeline *)ast)->right;
default:
return NULL;
}
}
static struct ast *_get_from_redirection(struct ast *ast, size_t index)
{
switch (index)
{
case 0:
return ((struct ast_redirection *)ast)->expr;
default:
return NULL;
}
}
static struct ast *_get_from_while(struct ast *ast, size_t index)
{
switch (index)
{
case 0:
return ((struct ast_while *)ast)->cond;
case 1:
return ((struct ast_while *)ast)->body;
default:
return NULL;
}
}
static struct ast *_get_from_assign(struct ast *ast, size_t index)
{
(void)ast;
(void)index;
return NULL;
}
static struct ast *_get_from_for(struct ast *ast, size_t index)
{
switch (index)
{
case 0:
return ((struct ast_for *)ast)->left;
case 1:
return ((struct ast_for *)ast)->right;
default:
return NULL;
}
}
static struct ast *_get_from_function(struct ast *ast, size_t index)
{
switch (index)
{
case 0:
return ((struct ast_function *)ast)->body;
default:
return NULL;
}
}
static struct ast *_get_from_subshell(struct ast *ast, size_t index)
{
switch (index)
{
case 0:
return ((struct ast_subshell *)ast)->body;
default:
return NULL;
}
}
typedef struct ast *(*ast_getters)(struct ast *, size_t);
static const ast_getters ast_getters_ltable[] = {
[AST_COMMAND] = _get_from_command,
[AST_IF] = _get_from_if,
[AST_LOGICAL] = _get_from_logical,
[AST_LIST] = _get_from_list,
[AST_PIPELINE] = _get_from_pipeline,
[AST_REDIRECTION] = _get_from_redirection,
[AST_WHILE] = _get_from_while,
[AST_ASSIGN] = _get_from_assign,
[AST_FOR] = _get_from_for,
[AST_FUNCTION] = _get_from_function,
[AST_SUBSHELL] = _get_from_subshell
};
struct ast *get_i(struct ast *ast, size_t index)
{
return ast_getters_ltable[ast->type](ast, index);
}
struct ast *get_left(struct ast *ast)
{
return get_i(ast, 0);
}
struct ast *get_right(struct ast *ast)
{
return get_i(ast, 1);
}
static void _set_on_command(struct ast *ast, struct ast *child, size_t index)
{
(void)ast;
(void)child;
(void)index;
return;
}
static void _set_on_if(struct ast *ast, struct ast *child, size_t index)
{
switch (index)
{
case 0:
((struct ast_if *)ast)->condition = child;
return;
case 1:
((struct ast_if *)ast)->then_body = child;
return;
case 2:
((struct ast_if *)ast)->else_body = child;
return;
default:
return;
}
}
static void _set_on_logical(struct ast *ast, struct ast *child, size_t index)
{
switch (index)
{
case 0:
((struct ast_logical *)ast)->left = child;
break;
case 1:
((struct ast_logical *)ast)->right = child;
break;
default:
return;
}
}
static void _set_on_list(struct ast *ast, struct ast *child, size_t index)
{
if (index > ((struct ast_list *)ast)->nb_children)
{
return;
}
if (index == ((struct ast_list *)ast)->nb_children)
{
((struct ast_list *)ast)->nb_children++;
((struct ast_list *)ast)->children = realloc(
((struct ast_list *)ast)->children,
((struct ast_list *)ast)->nb_children * sizeof(struct ast_command));
}
((struct ast_list *)ast)->children[index] = child;
}
static void _set_on_pipeline(struct ast *ast, struct ast *child, size_t index)
{
switch (index)
{
case 0:
((struct ast_pipeline *)ast)->left = child;
break;
case 1:
((struct ast_pipeline *)ast)->right = child;
break;
default:
return;
}
}
static void _set_on_redirection(struct ast *ast, struct ast *child,
size_t index)
{
switch (index)
{
case 0:
((struct ast_redirection *)ast)->expr = child;
break;
default:
return;
}
}
static void _set_on_while(struct ast *ast, struct ast *child, size_t index)
{
switch (index)
{
case 0:
((struct ast_while *)ast)->cond = child;
break;
case 1:
((struct ast_while *)ast)->body = child;
break;
default:
return;
}
}
static void _set_on_assign(struct ast *ast, struct ast *child, size_t index)
{
(void)ast;
(void)child;
(void)index;
return;
}
static void _set_on_for(struct ast *ast, struct ast *child, size_t index)
{
switch (index)
{
case 0:
((struct ast_for *)ast)->left = child;
return;
case 1:
((struct ast_for *)ast)->right = child;
return;
default:
return;
}
}
static void _set_on_function(struct ast *ast, struct ast *child, size_t index)
{
switch (index)
{
case 0:
((struct ast_function *)ast)->body = child;
default:
return;
}
}
static void _set_on_subshell(struct ast *ast, struct ast *child, size_t index)
{
switch (index)
{
case 0:
((struct ast_subshell *)ast)->body = child;
default:
return;
}
}
typedef void (*ast_setters)(struct ast *, struct ast *, size_t);
static const ast_setters ast_setters_ltable[] = {
[AST_COMMAND] = _set_on_command, [AST_IF] = _set_on_if,
[AST_LOGICAL] = _set_on_logical, [AST_LIST] = _set_on_list,
[AST_PIPELINE] = _set_on_pipeline, [AST_REDIRECTION] = _set_on_redirection,
[AST_WHILE] = _set_on_while, [AST_ASSIGN] = _set_on_assign,
[AST_FOR] = _set_on_for, [AST_FUNCTION] = _set_on_function,
[AST_SUBSHELL] = _set_on_subshell
};
void set_i(struct ast *ast, struct ast *child, size_t index)
{
ast_setters_ltable[ast->type](ast, child, index);
}
void set_left(struct ast *ast, struct ast *child)
{
set_i(ast, child, 0);
}
void set_right(struct ast *ast, struct ast *child)
{
set_i(ast, child, 1);
}
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