More specific AST struct and evaluation start

1 files changed, 80 insertions, 0 deletions

diff --git a/include/ast.h b/include/ast.h
new file mode 100644
index 0000000..4ee3396
--- /dev/null
+++ b/include/ast.h
@@ -0,0 +1,80 @@
+#ifndef AST_H
+# define AST_H
+
+/**
+** \file     ast.h
+** \brief    AST structs
+*/
+
+/**
+** \brief            Separator type
+** \param SEP_END    Regular command end `;`
+** \param SEP_PIPE   Pipe output of left to right `|`
+** \param SEP_AND    Execute right if left status == 0 `&&`
+** \param SEP_OR     Execute right if left status != 0 `||`
+*/
+
+typedef enum
+{
+	SEP_END,
+	SEP_PIPE,
+	SEP_AND,
+	SEP_OR,
+}				t_sep;
+
+typedef struct s_ast t_ast;
+/**
+** \brief            Line struct
+** \param left       AST to the left of separator
+** \param right      AST to the right of separator
+** \param sep        Type of separator
+*/
+
+typedef struct
+{
+	t_ast		*left;
+	t_ast		*right;
+	t_sep		sep;
+}				t_line;
+
+/**
+** \brief            Command struct
+** \param argv       Array of string, all arguments beginning with executable name
+** \param in         STDIN redirection filename
+** \param out        STDOUT redirection filename
+** \param is_append  True if out redirection is append to file
+*/
+
+typedef struct
+{
+	char		**argv;
+	char		*in;
+	char		*out;
+	bool		is_append;
+}				t_cmd;
+
+typedef enum
+{
+	TAG_CMD,
+	TAG_LINE,
+}   			t_ast_tag;
+
+/**
+** \brief             AST node struct
+** \param type        Node type
+** \param data        Union containning possible node data
+** \param data::cmd   Command struct
+** \param data::line  Line struct
+*/
+
+struct s_ast
+{
+	t_ast_tag	tag;
+	union
+	{
+		t_line	line;
+		t_cmd	cmd;
+	}			data;
+};
+
+#endif