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#ifndef AMALGAM_AST_H
#define AMALGAM_AST_H
#include "defs.h"
#include "std/buffer_view.h"
#include "std/buffer.h"
#include "std/misc.h"
#include "std/scoped_allocator.h"
#include "std/hash_map.h"
#include "binop_type.h"
#include <setjmp.h>
/* General error */
#define AST_ERR -1
#define AST_ERR_DEF_DUP -20
typedef struct FunctionDecl FunctionDecl;
typedef struct FunctionCall FunctionCall;
typedef struct LhsExpr LhsExpr;
typedef struct Import Import;
typedef struct String String;
typedef struct Variable Variable;
typedef struct Number Number;
typedef struct Binop Binop;
typedef union {
void *data;
FunctionDecl *func_decl;
FunctionCall *func_call;
LhsExpr *lhs_expr;
Import *import;
String *string;
Number *number;
Variable *variable;
Binop *binop;
} AstValue;
typedef enum {
AST_NONE,
AST_FUNCTION_DECL,
AST_FUNCTION_CALL,
AST_LHS,
AST_IMPORT,
AST_STRING,
AST_NUMBER,
AST_VARIABLE,
AST_BINOP
} AstType;
typedef enum {
AST_NOT_RESOLVED,
AST_RESOLVING,
AST_RESOLVED
} AstResolveStatus;
typedef struct {
AstValue value;
AstType type;
AstResolveStatus resolve_status;
} Ast;
struct Scope {
Buffer ast_objects;
HashMap/*(key=BufferView, value=Ast)*/ named_objects;
};
struct FunctionDecl {
Scope body;
};
struct FunctionCall {
BufferView name;
Buffer/*Ast*/ args;
};
struct LhsExpr {
int is_const;
BufferView type_name;
BufferView var_name;
Ast rhs_expr;
};
struct Import {
BufferView path;
};
struct String {
BufferView str;
};
struct Number {
union {
i64 integer;
f64 floating;
} value;
bool is_integer;
};
struct Variable {
BufferView name;
Ast resolved_variable;
};
struct Binop {
Ast lhs;
Ast rhs;
BinopType type;
/* Is the binop already ordered - no need to reorder it */
bool grouped;
};
typedef struct {
jmp_buf env;
Parser *parser;
} AstCompilerContext;
Ast ast_none();
void ast_init(Ast *self, void *value, AstType type);
BufferView ast_get_name(Ast *self);
CHECK_RESULT int funcdecl_init(FunctionDecl *self, ScopedAllocator *allocator);
CHECK_RESULT int funccall_init(FunctionCall *self, BufferView name, ScopedAllocator *allocator);
void lhsexpr_init(LhsExpr *self, int isConst, BufferView var_name);
void import_init(Import *self, BufferView path);
CHECK_RESULT int string_init(String *self, BufferView str);
void number_init(Number *self, i64 value, bool is_integer);
void variable_init(Variable *self, BufferView name);
void binop_init(Binop *self);
CHECK_RESULT int scope_init(Scope *self, ScopedAllocator *allocator);
CHECK_RESULT int scope_add_child(Scope *self, Ast *child);
/* longjump to compiler env on failure */
void scope_resolve(Scope *self, AstCompilerContext *context);
#endif
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