#include <stdio.h>
#include <stdbool.h>
-enum binop {
- binor,binand,
- eq,neq,leq,le,geq,ge,
- cons,plus,minus,times,divide,modulo,power
+#include "util.h"
+
+struct ast {
+ int ndecls;
+ struct decl **decls;
};
-enum fieldspec {fst,snd,hd,tl};
-enum unop {negate,inverse};
-enum ast_type {
- an_assign, an_binop, an_bool, an_char, an_cons, an_funcall, an_fundecl,
- an_ident, an_if, an_int, an_list, an_nil, an_return, an_stmt_expr,
- an_tuple, an_unop, an_vardecl, an_while
+
+struct vardecl {
+ char *ident;
+ struct expr *expr;
};
-struct ast {
- enum ast_type type;
+
+struct decl {
+ enum {dfundecl, dvardecl} type;
union {
- struct {
- struct ast *ident;
- struct ast *expr;
- } an_assign;
- bool an_bool;
- struct {
- struct ast *l;
- enum binop op;
- struct ast *r;
- } an_binop;
- char an_char;
- struct {
- struct ast *el;
- struct ast *tail;
- } an_cons;
- struct {
- char *ident;
- int nargs;
- struct ast **args;
- } an_funcall;
struct {
char *ident;
int nargs;
char **args;
int nbody;
- struct ast **body;
- } an_fundecl;
+ struct stmt **body;
+ } dfun;
+ struct vardecl dvar;
+ } data;
+};
+
+struct stmt {
+ enum {sassign, sif, sreturn, sexpr, svardecl, swhile} type;
+ union {
+ struct {
+ char *ident;
+ struct expr *expr;
+ } sassign;
struct {
- struct ast *pred;
+ struct expr *pred;
int nthen;
- struct ast **then;
+ struct stmt **then;
int nels;
- struct ast **els;
- } an_if;
- int an_int;
+ struct stmt **els;
+ } sif;
+ struct expr *sreturn;
+ struct expr *sexpr;
+ struct vardecl svardecl;
+ struct {
+ struct expr *pred;
+ int nbody;
+ struct stmt **body;
+ } swhile;
+ } data;
+};
+
+enum binop {
+ binor, binand, eq, neq, leq, le, geq, ge, cons, plus, minus, times,
+ divide, modulo, power,
+};
+enum fieldspec {fst,snd,hd,tl};
+enum unop {negate,inverse};
+struct expr {
+ enum {ebinop, ebool, echar, efuncall, eident, eint, enil, etuple,
+ eunop} type;
+ union {
+ bool ebool;
+ struct {
+ struct expr *l;
+ enum binop op;
+ struct expr *r;
+ } ebinop;
+ char echar;
+ struct {
+ char *ident;
+ int nargs;
+ struct expr **args;
+ } efuncall;
+ int eint;
struct {
char *ident;
int nfields;
enum fieldspec *fields;
- } an_ident;
- struct {
- int n;
- struct ast **ptr;
- } an_list;
- //struct { } an_nil;
- struct ast *an_return;
- struct ast *an_stmt_expr;
+ } eident;
struct {
- struct ast *left;
- struct ast *right;
- } an_tuple;
+ struct expr *left;
+ struct expr *right;
+ } etuple;
struct {
enum unop op;
- struct ast *l;
- } an_unop;
- struct {
- char *ident;
- struct ast *l;
- } an_vardecl;
- struct {
- struct ast *pred;
- int nbody;
- struct ast **body;
- } an_while;
+ struct expr *l;
+ } eunop;
} data;
};
-struct ast *ast_assign(struct ast *ident, struct ast *expr);
-struct ast *ast_binop(struct ast *l, enum binop op, struct ast *tail);
-struct ast *ast_bool(bool b);
-struct ast *ast_char(const char *c);
-struct ast *ast_cons(struct ast *el, struct ast *tail);
-struct ast *ast_funcall(struct ast *ident, struct ast *args);
-struct ast *ast_fundecl(struct ast *ident, struct ast *args, struct ast *body);
-struct ast *ast_if(struct ast *pred, struct ast *then, struct ast *els);
-struct ast *ast_int(int integer);
-struct ast *ast_identc(char *ident);
-struct ast *ast_ident(struct ast *ident, struct ast *fields);
-struct ast *ast_list(struct ast *llist);
-struct ast *ast_nil();
-struct ast *ast_return(struct ast *rtrn);
-struct ast *ast_stmt_expr(struct ast *expr);
-struct ast *ast_tuple(struct ast *left, struct ast *right);
-struct ast *ast_unop(enum unop op, struct ast *l);
-struct ast *ast_vardecl(struct ast *ident, struct ast *l);
-struct ast *ast_while(struct ast *pred, struct ast *body);
+struct ast *ast(struct list *decls);
+
+struct vardecl vardecl(char *ident, struct expr *expr);
+
+struct decl *decl_fun(char *ident, struct list *args, struct list *body);
+struct decl *decl_var(struct vardecl vardecl);
+
+struct stmt *stmt_assign(char *ident, struct expr *expr);
+struct stmt *stmt_if(struct expr *pred, struct list *then, struct list *els);
+struct stmt *stmt_return(struct expr *rtrn);
+struct stmt *stmt_expr(struct expr *expr);
+struct stmt *stmt_vardecl(struct vardecl vardecl);
+struct stmt *stmt_while(struct expr *pred, struct list *body);
+
+struct expr *expr_binop(struct expr *l, enum binop op, struct expr *r);
+struct expr *expr_bool(bool b);
+struct expr *expr_char(const char *c);
+struct expr *expr_funcall(char *ident, struct list *args);
+struct expr *expr_int(int integer);
+struct expr *expr_ident(char *ident, struct list *fields);
+struct expr *expr_nil();
+struct expr *expr_tuple(struct expr *left, struct expr *right);
+struct expr *expr_unop(enum unop op, struct expr *l);
-int ast_llistlength(struct ast *list);
+void ast_print(struct ast *, FILE *out);
+void decl_print(struct decl *ast, int indent, FILE *out);
+void stmt_print(struct stmt *ast, int indent, FILE *out);
+void expr_print(struct expr *ast, FILE *out);
-void ast_print(struct ast * ast, int indent, FILE *out);
-void ast_free(struct ast *ast);
+void ast_free(struct ast *);
+void decl_free(struct decl *ast);
+void stmt_free(struct stmt *ast);
+void expr_free(struct expr *ast);
#endif
repositories / ccc.git / blobdiff