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#ifndef EDITOR_PARSER_H
#define EDITOR_PARSER_H
// typedef enum AstNodeType AstNodeType;
enum AstNodeType {
Literal,
IdentExpr, // TODO: evaluate this in an expression pass
Binary,
Assignment,
Return,
Function,
};
typedef struct AstNode AstNode;
struct AstNode {
AstNode *first;
AstNode *last;
AstNode *parent;
AstNode *next;
AstNodeType type;
};
typedef struct Ast Ast;
struct Ast {
AstNode *root;
AstNode *current;
String8List *symbols;
};
ReadOnly global_variable AstNode nil_ast_node = {
&nil_ast_node, // first
&nil_ast_node, // last
&nil_ast_node, // parent
&nil_ast_node, // next
};
ReadOnly global_variable Ast nil_ast = {
&nil_ast_node, // root
&nil_ast_node, // currrent
};
#define PeekForward(node, type, nil_node) \
for (; (node) && (node) != &(nil_node); (node) = (node)->next) \
if ((node)->token->type == (type)) \
break;
//-
internal Ast *parse_tokenized_tree_fmt(MemArena *arena, TokenTree *token_tree);
internal b32 is_ast_node_nil(AstNode *node);
internal void adopt_ast_node(AstNode *tree_node, AstNode *new_node);
//- syntax
global_variable String8 reserved_words[] = {
str8("struct"),
str8("while"),
str8("return"),
str8("for"),
str8("import"),
str8("switch"),
str8("case"),
str8("defer"),
str8("enum"),
};
#define FillAstNodeFieldWIthNilNode(node, field) \
if (node->field == NULL || !is_ast_node_nil(node)) \
node->field = &nil_ast_node;
internal void adopt_ast_node(AstNode *node, AstNode *new_node);
#endif // EDITOR_PARSER_H
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