initial upload

src/eval/eval_parser.h

@@ -0,0 +1,145 @@
+// Copyright (c) 2024 Epic Games Tools
+// Licensed under the MIT license (https://opensource.org/license/mit/)
+
+#ifndef EVAL2_PARSER_H
+#define EVAL2_PARSER_H
+
+////////////////////////////////
+//~ rjf: Maps
+
+typedef struct EVAL_String2NumMapNode EVAL_String2NumMapNode;
+struct EVAL_String2NumMapNode
+{
+  EVAL_String2NumMapNode *next;
+  String8 string;
+  U64 num;
+};
+
+typedef struct EVAL_String2NumMapSlot EVAL_String2NumMapSlot;
+struct EVAL_String2NumMapSlot
+{
+  EVAL_String2NumMapNode *first;
+  EVAL_String2NumMapNode *last;
+};
+
+typedef struct EVAL_String2NumMap EVAL_String2NumMap;
+struct EVAL_String2NumMap
+{
+  U64 slots_count;
+  EVAL_String2NumMapSlot *slots;
+};
+
+////////////////////////////////
+//~ rjf: Token Types
+
+typedef enum EVAL_TokenKind
+{
+  EVAL_TokenKind_Null,
+  EVAL_TokenKind_Identifier,
+  EVAL_TokenKind_Numeric,
+  EVAL_TokenKind_StringLiteral,
+  EVAL_TokenKind_CharLiteral,
+  EVAL_TokenKind_Symbol,
+  EVAL_TokenKind_COUNT
+}
+EVAL_TokenKind;
+
+typedef struct EVAL_Token EVAL_Token;
+struct EVAL_Token
+{
+  EVAL_TokenKind kind;
+  Rng1U64 range;
+};
+
+typedef struct EVAL_TokenChunkNode EVAL_TokenChunkNode;
+struct EVAL_TokenChunkNode
+{
+  EVAL_TokenChunkNode *next;
+  EVAL_Token *v;
+  U64 count;
+  U64 cap;
+};
+
+typedef struct EVAL_TokenChunkList EVAL_TokenChunkList;
+struct EVAL_TokenChunkList
+{
+  EVAL_TokenChunkNode *first;
+  EVAL_TokenChunkNode *last;
+  U64 node_count;
+  U64 total_count;
+};
+
+typedef struct EVAL_TokenArray EVAL_TokenArray;
+struct EVAL_TokenArray
+{
+  EVAL_Token *v;
+  U64 count;
+};
+
+////////////////////////////////
+//~ rjf: Parser Types
+
+typedef struct EVAL_ParseResult EVAL_ParseResult;
+struct EVAL_ParseResult
+{
+  EVAL_Token *last_token;
+  EVAL_Expr *expr;
+  EVAL_ErrorList errors;
+};
+
+typedef struct EVAL_ParseCtx EVAL_ParseCtx;
+struct EVAL_ParseCtx
+{
+  Architecture arch;
+  U64 ip_voff;
+  RADDBG_Parsed *rdbg;
+  TG_Graph *type_graph;
+  EVAL_String2NumMap *regs_map;
+  EVAL_String2NumMap *reg_alias_map;
+  EVAL_String2NumMap *locals_map;
+  EVAL_String2NumMap *member_map;
+};
+
+////////////////////////////////
+//~ rjf: Globals
+
+read_only global EVAL_String2NumMap eval_string2num_map_nil = {0};
+global read_only EVAL_ParseResult eval_parse_result_nil = {0, &eval_expr_nil};
+
+////////////////////////////////
+//~ rjf: Basic Functions
+
+internal U64 eval_hash_from_string(String8 string);
+
+////////////////////////////////
+//~ rjf: Map Functions
+
+internal EVAL_String2NumMap eval_string2num_map_make(Arena *arena, U64 slot_count);
+internal void eval_string2num_map_insert(Arena *arena, EVAL_String2NumMap *map, String8 string, U64 num);
+internal U64 eval_num_from_string(EVAL_String2NumMap *map, String8 string);
+
+////////////////////////////////
+//~ rjf: Debug-Info-Driven Map Building Fast Paths
+
+internal EVAL_String2NumMap *eval_push_locals_map_from_raddbg_voff(Arena *arena, RADDBG_Parsed *rdbg, U64 voff);
+internal EVAL_String2NumMap *eval_push_member_map_from_raddbg_voff(Arena *arena, RADDBG_Parsed *rdbg, U64 voff);
+
+////////////////////////////////
+//~ rjf: Tokenization Functions
+
+#define eval_token_at_it(it, arr) (((it) < (arr)->v+(arr)->count) ? (*(it)) : eval_token_zero())
+internal EVAL_Token eval_token_zero(void);
+internal void eval_token_chunk_list_push(Arena *arena, EVAL_TokenChunkList *list, U64 chunk_size, EVAL_Token *token);
+internal EVAL_TokenArray eval_token_array_from_chunk_list(Arena *arena, EVAL_TokenChunkList *list);
+internal EVAL_TokenArray eval_token_array_from_text(Arena *arena, String8 text);
+internal EVAL_TokenArray eval_token_array_make_first_opl(EVAL_Token *first, EVAL_Token *opl);
+
+////////////////////////////////
+//~ rjf: Parser Functions
+
+internal TG_Key eval_leaf_type_from_name(RADDBG_Parsed *rdbg, String8 name);
+internal EVAL_ParseResult eval_parse_type_from_text_tokens(Arena *arena, EVAL_ParseCtx *ctx, String8 text, EVAL_TokenArray *tokens);
+internal EVAL_ParseResult eval_parse_expr_from_text_tokens__prec(Arena *arena, EVAL_ParseCtx *ctx, String8 text, EVAL_TokenArray *tokens, S64 max_precedence);
+internal EVAL_ParseResult eval_parse_expr_from_text_tokens(Arena *arena, EVAL_ParseCtx *ctx, String8 text, EVAL_TokenArray *tokens);
+
+#endif // EVAL2_PARSER_H