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# pragma once
#include "../src/utils.h"
// Stage 1
typedef enum {
PLUS,
MINUS,
MULT,
DIV,
} BinOp;
typedef enum {
ARITHM_INT_LIT,
ARITHM_BINOP,
} ArithmNodeKind;
typedef struct ArithmNode ArithmNode;
struct ArithmNode {
ArithmNodeKind kind;
union {
int lit_val;
IntVec open_fds;
struct {
BinOp op;
ArithmNode* left;
ArithmNode* right;
} binop;
} as;
};
DECLARE_VEC(ArithmNode, ArithmNodeVec)
typedef struct {
ArithmNodeVec nodes;
ArithmNode* root;
} ArithmAst;
typedef enum {
UN_Q,
SINGLE_Q,
DOUBLE_Q,
} QuotationMode;
typedef enum {
CHUNK_LIT,
CHUNK_VAR,
CHUNK_CMDSUB,
CHUNK_ARITHM,
} ChunkKind;
typedef struct {
QuotationMode qmode;
ChunkKind kind;
union {
char* lit_str;
char* varname;
ArithmAst arithm_expr;
// TODO: CHUNK_CMDSUB
} as;
} Chunk;
DECLARE_VEC(Chunk, Word)
typedef enum {
TOK_WORD,
TOK_SPEC,
TOK_SUB_IN,
TOK_SUB_OUT,
} TokenKind;
typedef enum {
SPEC_PIPE,
SPEC_REDIR_W_TRUNC,
SPEC_REDIR_W_APPEND,
SPEC_REDIR_R,
SPEC_EOL,
} SpecialToken;
typedef struct Token Token;
DECLARE_VEC(Token*, TokenPtrVec)
struct Token {
TokenKind kind;
union {
Word word;
SpecialToken spec;
TokenPtrVec procsub_toks;
} as;
};
DECLARE_VEC(Token, TokenVec)
typedef struct {
TokenVec token_pool;
TokenPtrVec top_tokens;
} Ast;
// Stage 2
typedef enum {
REDIR_WRITE_TRUNC,
REDIR_WRITE_APPEND,
REDIR_READ,
REDIR_FDS,
} RedirectKind;
typedef struct {
RedirectKind kind;
union {
char* filename;
struct{int from; int to;} fds;
} as;
} Redirect;
DECLARE_VEC(Redirect, RedirectVec)
typedef struct PlCommand PlCommand;
typedef enum {
ARG_PS_IN,
ARG_PS_OUT,
ARG_LIT,
} ArgKind;
typedef struct {
ArgKind kind;
union {
char* lit_str;
PlCommand* sub_tree;
} as;
} Arg;
DECLARE_VEC(Arg, ArgVec)
typedef enum {
CONN_PIPE,
CONN_EOL,
} Connector;
struct PlCommand {
ArgVec args;
RedirectVec redirects;
Connector conn;
};
DECLARE_VEC(PlCommand, Pipeline)
// Stage 3
typedef struct {
int redirected;
int to;
} FdRedirect;
DECLARE_VEC(FdRedirect, FdRedirectVec)
typedef struct {
char** args;
FdRedirectVec redirects;
int stdin_fd, stdout_fd;
IntVec open_fds;
} ExecutableCommand;
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