From 1ea48b1fcb7ac64935018b1ced2d0f11982872ea Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Wed, 24 Nov 2021 20:43:52 +0800
Subject: import(life): Add compile principle experiment 3.

---
 works/life/compile-principle-experiment/3/main.h | 25 ++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 works/life/compile-principle-experiment/3/main.h

(limited to 'works/life/compile-principle-experiment/3/main.h')

diff --git a/works/life/compile-principle-experiment/3/main.h b/works/life/compile-principle-experiment/3/main.h
new file mode 100644
index 0000000..9bd6e56
--- /dev/null
+++ b/works/life/compile-principle-experiment/3/main.h
@@ -0,0 +1,25 @@
+#pragma once
+
+typedef union SymbolValue {
+  double val;
+  double (*ptr)();
+} SymbolValue;
+
+typedef struct Symbol {
+  char *name;
+  int type;
+  SymbolValue value;
+  struct Symbol *next;
+} Symbol;
+
+Symbol *cru_symbol_lookup(const char *name);
+Symbol *cru_symbol_install(const char *name, int type, SymbolValue value);
+
+double Pow(double x, double y);
+
+int yylex();
+int yyparse();
+void yyerror(const char *s);
+
+extern int lineno;
+void execerror(const char *s, const char *t);
-- 
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