From 465c544d4a593a135c86390d61385cfbd2f93dd5 Mon Sep 17 00:00:00 2001
From: dec05eba <dec05eba@protonmail.com>
Date: Sun, 3 Mar 2019 14:54:07 +0100
Subject: Use setjmp, longjmp instead of return_if_error to improve performance

---
 include/ast.h    |  2 ++
 include/parser.h | 15 ++++++++++++++-
 2 files changed, 16 insertions(+), 1 deletion(-)

(limited to 'include')

diff --git a/include/ast.h b/include/ast.h
index 05bb6ee..29a0b64 100644
--- a/include/ast.h
+++ b/include/ast.h
@@ -85,6 +85,8 @@ struct Binop {
     Ast lhs;
     Ast rhs;
     BinopType type;
+    /* Is the binop already ordered - no need to reorder it */
+    bool grouped;
 };
 
 Ast ast_none();
diff --git a/include/parser.h b/include/parser.h
index 531d67d..b9fb3b7 100644
--- a/include/parser.h
+++ b/include/parser.h
@@ -8,6 +8,8 @@
 #include "tokenizer.h"
 #include "defs.h"
 
+#include <setjmp.h>
+
 #define PARSER_OK 0
 /* General error */
 #define PARSER_ERR -1
@@ -25,6 +27,11 @@ struct ParserThreadData {
     ScopedAllocator allocator;
 };
 
+typedef enum {
+    ERROR_CONTEXT_NONE,
+    ERROR_CONTEXT_RHS_START
+} ErrorContext;
+
 typedef struct {
     Tokenizer tokenizer;
     Buffer ast_objects;
@@ -32,6 +39,8 @@ typedef struct {
     amal_compiler *compiler;
     bool started;
     TokenizerError error;
+    ErrorContext error_context;
+    jmp_buf parse_env;
 } Parser;
 
 CHECK_RESULT int parser_thread_data_init(ParserThreadData *self);
@@ -44,9 +53,13 @@ CHECK_RESULT int parser_init(Parser *self, amal_compiler *compiler, ScopedAlloca
 /*
 @buffer_name will be the path to the file when using parser_parse_file and when parsing a buffer
 you can name the buffer anything  you want to identify it.
+Should only be called once for a parser object.
 */
 CHECK_RESULT int parser_parse_buffer(Parser *self, BufferView code_buffer, BufferView buffer_name);
-/* Parses a file and the dependencies that are included using @import */
+/*
+Parses a file and the dependencies that are included using @import.
+Should only be called once for a parser object.
+*/
 CHECK_RESULT int parser_parse_file(Parser *self, BufferView filepath);
 
 #endif
-- 
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