804 lines
21 KiB
C++
804 lines
21 KiB
C++
#ifndef LIBCUBESCRIPT_CUBESCRIPT_HH
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#define LIBCUBESCRIPT_CUBESCRIPT_HH
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#include <stdio.h>
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#include <stdlib.h>
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#include <vector>
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#include <optional>
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#include <functional>
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#include <type_traits>
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#include <utility>
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#include "cubescript_conf.hh"
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#include <ostd/platform.hh>
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#include <ostd/string.hh>
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#include <ostd/range.hh>
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#include <ostd/format.hh>
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namespace cscript {
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static_assert(std::is_integral_v<cs_int>, "cs_int must be integral");
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static_assert(std::is_signed_v<cs_int>, "cs_int must be signed");
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static_assert(std::is_floating_point_v<cs_float>, "cs_float must be floating point");
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struct cs_internal_error: std::runtime_error {
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using std::runtime_error::runtime_error;
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};
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enum {
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CS_IDF_PERSIST = 1 << 0,
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CS_IDF_OVERRIDE = 1 << 1,
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CS_IDF_HEX = 1 << 2,
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CS_IDF_READONLY = 1 << 3,
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CS_IDF_OVERRIDDEN = 1 << 4,
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CS_IDF_UNKNOWN = 1 << 5,
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CS_IDF_ARG = 1 << 6
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};
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struct cs_bcode;
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struct cs_value;
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struct cs_state;
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struct cs_shared_state;
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struct OSTD_EXPORT cs_bcode_ref {
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cs_bcode_ref():
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p_code(nullptr)
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{}
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cs_bcode_ref(cs_bcode *v);
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cs_bcode_ref(cs_bcode_ref const &v);
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cs_bcode_ref(cs_bcode_ref &&v):
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p_code(v.p_code)
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{
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v.p_code = nullptr;
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}
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~cs_bcode_ref();
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cs_bcode_ref &operator=(cs_bcode_ref const &v);
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cs_bcode_ref &operator=(cs_bcode_ref &&v);
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operator bool() const { return p_code != nullptr; }
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operator cs_bcode *() const { return p_code; }
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private:
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cs_bcode *p_code;
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};
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OSTD_EXPORT bool cs_code_is_empty(cs_bcode *code);
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struct OSTD_EXPORT cs_strref {
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friend struct cs_value;
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/* FIXME: eliminate this */
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friend inline cs_strref cs_make_strref(char const *p, cs_shared_state &cs);
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cs_strref() = delete;
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cs_strref(cs_shared_state &cs, std::string_view str);
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cs_strref(cs_state &cs, std::string_view str);
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cs_strref(cs_strref const &ref);
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~cs_strref();
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cs_strref &operator=(cs_strref const &ref);
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operator std::string_view() const;
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std::size_t size() const {
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return std::string_view{*this}.size();
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}
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std::size_t length() const {
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return std::string_view{*this}.length();
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}
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char const *data() const {
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return std::string_view{*this}.data();
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}
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bool operator==(cs_strref const &s) const;
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private:
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/* for internal use only */
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cs_strref(char const *p, cs_shared_state &cs);
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cs_shared_state *p_state;
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char const *p_str;
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};
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enum class cs_value_type {
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NONE = 0, INT, FLOAT, STRING, CODE, IDENT
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};
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struct OSTD_EXPORT cs_value {
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cs_value() = delete;
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~cs_value();
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cs_value(cs_state &);
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cs_value(cs_shared_state &);
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cs_value(cs_value const &);
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cs_value(cs_value &&v);
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cs_value &operator=(cs_value const &);
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cs_value &operator=(cs_value &&);
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cs_value_type get_type() const;
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void set_int(cs_int val);
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void set_float(cs_float val);
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void set_str(std::string_view val);
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void set_str(cs_strref const &val);
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void set_none();
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void set_code(cs_bcode *val);
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void set_ident(cs_ident *val);
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cs_strref get_str() const;
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cs_int get_int() const;
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cs_float get_float() const;
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cs_bcode *get_code() const;
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cs_ident *get_ident() const;
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void get_val(cs_value &r) const;
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bool get_bool() const;
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void force_none();
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cs_float force_float();
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cs_int force_int();
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std::string_view force_str();
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bool code_is_empty() const;
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private:
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template<typename T>
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struct stor_t {
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cs_shared_state *state;
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T val;
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};
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cs_shared_state *state() const {
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return reinterpret_cast<stor_t<void *> const *>(&p_stor)->state;
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}
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std::aligned_union_t<1,
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stor_t<cs_int>,
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stor_t<cs_float>,
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stor_t<void *>,
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cs_strref
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> p_stor;
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cs_value_type p_type;
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};
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struct cs_ident_stack {
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cs_value val_s;
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cs_ident_stack *next;
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cs_ident_stack(cs_state &cs): val_s{cs}, next{nullptr} {}
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};
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struct cs_error;
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struct cs_gen_state;
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enum class cs_ident_type {
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IVAR = 0, FVAR, SVAR, COMMAND, ALIAS, SPECIAL
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};
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struct cs_var;
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struct cs_ivar;
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struct cs_fvar;
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struct cs_svar;
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struct cs_alias;
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struct cs_command;
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struct OSTD_EXPORT cs_ident {
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friend struct cs_state;
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friend struct cs_shared_state;
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cs_ident() = delete;
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cs_ident(cs_ident const &) = delete;
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cs_ident(cs_ident &&) = delete;
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/* trigger destructors for all inherited members properly */
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virtual ~cs_ident() {};
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cs_ident &operator=(cs_ident const &) = delete;
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cs_ident &operator=(cs_ident &&) = delete;
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cs_ident_type get_type() const;
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std::string_view get_name() const;
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int get_flags() const;
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int get_index() const;
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bool is_alias() const;
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cs_alias *get_alias();
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cs_alias const *get_alias() const;
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bool is_command() const;
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cs_command *get_command();
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cs_command const *get_command() const;
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bool is_special() const;
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bool is_var() const;
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cs_var *get_var();
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cs_var const *get_var() const;
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bool is_ivar() const;
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cs_ivar *get_ivar();
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cs_ivar const *get_ivar() const;
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bool is_fvar() const;
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cs_fvar *get_fvar();
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cs_fvar const *get_fvar() const;
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bool is_svar() const;
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cs_svar *get_svar();
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cs_svar const *get_svar() const;
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int get_type_raw() const {
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return p_type;
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}
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protected:
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cs_ident(cs_ident_type tp, cs_strref name, int flags = 0);
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cs_strref p_name;
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/* represents the cs_ident_type above, but internally it has a wider variety
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* of values, so it's an int here (maps to an internal enum)
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*/
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int p_type, p_flags;
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private:
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int p_index = -1;
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};
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struct OSTD_EXPORT cs_var: cs_ident {
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friend struct cs_state;
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friend struct cs_shared_state;
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protected:
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cs_var(cs_ident_type tp, cs_strref name, cs_var_cb func, int flags = 0);
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private:
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cs_var_cb cb_var;
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void changed(cs_state &cs) {
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if (cb_var) {
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cb_var(cs, *this);
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}
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}
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};
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struct OSTD_EXPORT cs_ivar: cs_var {
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friend struct cs_state;
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friend struct cs_shared_state;
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cs_int get_val_min() const;
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cs_int get_val_max() const;
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cs_int get_value() const;
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void set_value(cs_int val);
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private:
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cs_ivar(
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cs_strref n, cs_int m, cs_int x, cs_int v, cs_var_cb f, int flags
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);
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cs_int p_storage, p_minval, p_maxval, p_overrideval;
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};
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struct OSTD_EXPORT cs_fvar: cs_var {
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friend struct cs_state;
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friend struct cs_shared_state;
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cs_float get_val_min() const;
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cs_float get_val_max() const;
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cs_float get_value() const;
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void set_value(cs_float val);
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private:
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cs_fvar(
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cs_strref n, cs_float m, cs_float x, cs_float v,
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cs_var_cb f, int flags
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);
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cs_float p_storage, p_minval, p_maxval, p_overrideval;
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};
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struct OSTD_EXPORT cs_svar: cs_var {
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friend struct cs_state;
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friend struct cs_shared_state;
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cs_strref get_value() const;
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void set_value(cs_strref val);
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private:
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cs_svar(cs_strref n, cs_strref v, cs_strref ov, cs_var_cb f, int flags);
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cs_strref p_storage, p_overrideval;
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};
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struct OSTD_EXPORT cs_alias: cs_ident {
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friend struct cs_state;
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friend struct cs_shared_state;
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friend struct cs_alias_internal;
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cs_value get_value() const {
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return p_val;
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}
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void get_cval(cs_value &v) const;
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private:
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cs_alias(cs_state &cs, cs_strref n, cs_strref a, int flags);
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cs_alias(cs_state &cs, cs_strref n, std::string_view a, int flags);
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cs_alias(cs_state &cs, cs_strref n, cs_int a, int flags);
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cs_alias(cs_state &cs, cs_strref n, cs_float a, int flags);
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cs_alias(cs_state &cs, cs_strref n, int flags);
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cs_alias(cs_state &cs, cs_strref n, cs_value v, int flags);
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cs_bcode *p_acode;
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cs_ident_stack *p_astack;
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cs_value p_val;
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};
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struct cs_command: cs_ident {
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friend struct cs_state;
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friend struct cs_shared_state;
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friend struct cs_cmd_internal;
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std::string_view get_args() const;
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int get_num_args() const;
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private:
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cs_command(cs_strref name, cs_strref args, int numargs, cs_command_cb func);
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cs_strref p_cargs;
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cs_command_cb p_cb_cftv;
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int p_numargs;
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};
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struct cs_ident_link;
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enum {
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CS_LIB_MATH = 1 << 0,
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CS_LIB_STRING = 1 << 1,
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CS_LIB_LIST = 1 << 2,
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CS_LIB_ALL = 0b111
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};
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enum class cs_loop_state {
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NORMAL = 0, BREAK, CONTINUE
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};
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static inline void *cs_default_alloc(void *, void *p, size_t, size_t ns) {
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if (!ns) {
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delete[] static_cast<unsigned char *>(p);
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return nullptr;
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}
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return new unsigned char[ns];
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}
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struct OSTD_EXPORT cs_state {
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friend struct cs_error;
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friend struct cs_strman;
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friend struct cs_strref;
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friend struct cs_value;
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friend struct cs_gen_state;
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friend inline cs_shared_state *cs_get_sstate(cs_state &);
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cs_shared_state *p_state;
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cs_ident_link *p_callstack = nullptr;
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int identflags = 0;
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cs_state(cs_alloc_cb func = cs_default_alloc, void *data = nullptr);
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virtual ~cs_state();
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cs_state(cs_state const &) = delete;
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cs_state(cs_state &&s) {
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swap(s);
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}
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cs_state &operator=(cs_state const &) = delete;
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cs_state &operator=(cs_state &&s) {
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swap(s);
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s.destroy();
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return *this;
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}
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void destroy();
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void swap(cs_state &s) {
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std::swap(p_state, s.p_state);
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std::swap(p_callstack, s.p_callstack);
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std::swap(identflags, s.identflags);
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std::swap(p_pstate, s.p_pstate);
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std::swap(p_inloop, s.p_inloop);
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std::swap(p_owner, s.p_owner);
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std::swap(p_callhook, s.p_callhook);
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}
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cs_state new_thread();
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cs_hook_cb set_call_hook(cs_hook_cb func);
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cs_hook_cb const &get_call_hook() const;
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cs_hook_cb &get_call_hook();
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cs_vprint_cb set_var_printer(cs_vprint_cb func);
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cs_vprint_cb const &get_var_printer() const;
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void init_libs(int libs = CS_LIB_ALL);
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void clear_override(cs_ident &id);
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void clear_overrides();
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cs_ident *new_ident(std::string_view name, int flags = CS_IDF_UNKNOWN);
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cs_ident *force_ident(cs_value &v);
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cs_ivar *new_ivar(
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std::string_view n, cs_int m, cs_int x, cs_int v,
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cs_var_cb f = cs_var_cb(), int flags = 0
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);
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cs_fvar *new_fvar(
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std::string_view n, cs_float m, cs_float x, cs_float v,
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cs_var_cb f = cs_var_cb(), int flags = 0
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);
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cs_svar *new_svar(
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std::string_view n, std::string_view v,
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cs_var_cb f = cs_var_cb(), int flags = 0
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);
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cs_command *new_command(
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std::string_view name, std::string_view args, cs_command_cb func
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);
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cs_ident *get_ident(std::string_view name);
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cs_alias *get_alias(std::string_view name);
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bool have_ident(std::string_view name);
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cs_ident_r get_idents();
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cs_const_ident_r get_idents() const;
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void reset_var(std::string_view name);
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void touch_var(std::string_view name);
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cs_strref run_str(cs_bcode *code);
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cs_strref run_str(std::string_view code);
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cs_strref run_str(cs_ident *id, cs_value_r args);
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cs_int run_int(cs_bcode *code);
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cs_int run_int(std::string_view code);
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cs_int run_int(cs_ident *id, cs_value_r args);
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cs_float run_float(cs_bcode *code);
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cs_float run_float(std::string_view code);
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cs_float run_float(cs_ident *id, cs_value_r args);
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bool run_bool(cs_bcode *code);
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bool run_bool(std::string_view code);
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bool run_bool(cs_ident *id, cs_value_r args);
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void run(cs_bcode *code, cs_value &ret);
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void run(std::string_view code, cs_value &ret);
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void run(cs_ident *id, cs_value_r args, cs_value &ret);
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void run(cs_bcode *code);
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void run(std::string_view code);
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void run(cs_ident *id, cs_value_r args);
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cs_loop_state run_loop(cs_bcode *code, cs_value &ret);
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cs_loop_state run_loop(cs_bcode *code);
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bool is_in_loop() const {
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return p_inloop;
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}
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std::optional<cs_strref> run_file_str(std::string_view fname);
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std::optional<cs_int> run_file_int(std::string_view fname);
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std::optional<cs_float> run_file_float(std::string_view fname);
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std::optional<bool> run_file_bool(std::string_view fname);
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bool run_file(std::string_view fname, cs_value &ret);
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bool run_file(std::string_view fname);
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void set_alias(std::string_view name, cs_value v);
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void set_var_int(
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std::string_view name, cs_int v,
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bool dofunc = true, bool doclamp = true
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);
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void set_var_float(
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std::string_view name, cs_float v,
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bool dofunc = true, bool doclamp = true
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);
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void set_var_str(
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std::string_view name, std::string_view v, bool dofunc = true
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);
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void set_var_int_checked(cs_ivar *iv, cs_int v);
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void set_var_int_checked(cs_ivar *iv, cs_value_r args);
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void set_var_float_checked(cs_fvar *fv, cs_float v);
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void set_var_str_checked(cs_svar *fv, std::string_view v);
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std::optional<cs_int> get_var_int(std::string_view name);
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std::optional<cs_float> get_var_float(std::string_view name);
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std::optional<cs_strref> get_var_str(std::string_view name);
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std::optional<cs_int> get_var_min_int(std::string_view name);
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std::optional<cs_int> get_var_max_int(std::string_view name);
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std::optional<cs_float> get_var_min_float(std::string_view name);
|
|
std::optional<cs_float> get_var_max_float(std::string_view name);
|
|
|
|
std::optional<cs_strref> get_alias_val(std::string_view name);
|
|
|
|
void print_var(cs_var const &v) const;
|
|
|
|
private:
|
|
OSTD_LOCAL cs_state(cs_shared_state *s);
|
|
|
|
cs_ident *add_ident(cs_ident *id);
|
|
|
|
OSTD_LOCAL void *alloc(void *ptr, size_t olds, size_t news);
|
|
|
|
cs_gen_state *p_pstate = nullptr;
|
|
int p_inloop = 0;
|
|
bool p_owner = false;
|
|
|
|
char p_errbuf[512];
|
|
|
|
cs_hook_cb p_callhook;
|
|
};
|
|
|
|
struct cs_stack_state_node {
|
|
cs_stack_state_node const *next;
|
|
cs_ident const *id;
|
|
int index;
|
|
};
|
|
|
|
struct cs_stack_state {
|
|
cs_stack_state() = delete;
|
|
cs_stack_state(cs_state &cs, cs_stack_state_node *nd = nullptr, bool gap = false);
|
|
cs_stack_state(cs_stack_state const &) = delete;
|
|
cs_stack_state(cs_stack_state &&st);
|
|
~cs_stack_state();
|
|
|
|
cs_stack_state &operator=(cs_stack_state const &) = delete;
|
|
cs_stack_state &operator=(cs_stack_state &&);
|
|
|
|
cs_stack_state_node const *get() const;
|
|
bool gap() const;
|
|
|
|
private:
|
|
cs_state &p_state;
|
|
cs_stack_state_node *p_node;
|
|
bool p_gap;
|
|
};
|
|
|
|
struct cs_error {
|
|
friend struct cs_state;
|
|
|
|
cs_error() = delete;
|
|
cs_error(cs_error const &) = delete;
|
|
cs_error(cs_error &&v):
|
|
p_errmsg(v.p_errmsg), p_stack(std::move(v.p_stack))
|
|
{}
|
|
|
|
std::string_view what() const {
|
|
return p_errmsg;
|
|
}
|
|
|
|
cs_stack_state &get_stack() {
|
|
return p_stack;
|
|
}
|
|
|
|
cs_stack_state const &get_stack() const {
|
|
return p_stack;
|
|
}
|
|
|
|
cs_error(cs_state &cs, std::string_view msg):
|
|
p_errmsg(), p_stack(cs)
|
|
{
|
|
p_errmsg = save_msg(cs, msg);
|
|
p_stack = save_stack(cs);
|
|
}
|
|
|
|
template<typename ...A>
|
|
cs_error(cs_state &cs, std::string_view msg, A &&...args):
|
|
p_errmsg(), p_stack(cs)
|
|
{
|
|
try {
|
|
char fbuf[512];
|
|
auto ret = ostd::format(
|
|
ostd::counting_sink(ostd::char_range(fbuf, fbuf + sizeof(fbuf))),
|
|
msg, std::forward<A>(args)...
|
|
).get_written();
|
|
p_errmsg = save_msg(cs, ostd::char_range(fbuf, fbuf + ret));
|
|
} catch (...) {
|
|
p_errmsg = save_msg(cs, msg);
|
|
}
|
|
p_stack = save_stack(cs);
|
|
}
|
|
|
|
private:
|
|
cs_stack_state save_stack(cs_state &cs);
|
|
std::string_view save_msg(cs_state &cs, std::string_view v);
|
|
|
|
std::string_view p_errmsg;
|
|
cs_stack_state p_stack;
|
|
};
|
|
|
|
struct OSTD_EXPORT cs_stacked_value: cs_value {
|
|
cs_stacked_value(cs_state &cs, cs_ident *id = nullptr);
|
|
~cs_stacked_value();
|
|
|
|
cs_stacked_value(cs_stacked_value const &) = delete;
|
|
cs_stacked_value(cs_stacked_value &&) = delete;
|
|
|
|
cs_stacked_value &operator=(cs_stacked_value const &) = delete;
|
|
cs_stacked_value &operator=(cs_stacked_value &&v) = delete;
|
|
|
|
cs_stacked_value &operator=(cs_value const &v);
|
|
cs_stacked_value &operator=(cs_value &&v);
|
|
|
|
bool set_alias(cs_ident *id);
|
|
cs_alias *get_alias() const;
|
|
bool has_alias() const;
|
|
|
|
bool push();
|
|
bool pop();
|
|
|
|
private:
|
|
cs_alias *p_a;
|
|
cs_ident_stack p_stack;
|
|
bool p_pushed;
|
|
};
|
|
|
|
struct OSTD_EXPORT cs_list_parse_state {
|
|
cs_list_parse_state(std::string_view s = std::string_view{}):
|
|
input_beg{s.data()}, input_end{s.data() + s.size()}
|
|
{}
|
|
|
|
void set_input(std::string_view s) {
|
|
input_beg = s.data();
|
|
input_end = s.data() + s.size();
|
|
}
|
|
|
|
std::string_view get_input() const {
|
|
return std::string_view{input_beg, std::size_t(input_end - input_beg)};
|
|
}
|
|
|
|
char const *input_beg, *input_end;
|
|
std::string_view item{};
|
|
std::string_view quoted_item{};
|
|
};
|
|
|
|
OSTD_EXPORT bool list_parse(cs_list_parse_state &ps, cs_state &cs);
|
|
OSTD_EXPORT std::size_t list_count(cs_list_parse_state &ps, cs_state &cs);
|
|
OSTD_EXPORT cs_strref list_get_item(cs_list_parse_state &ps, cs_state &cs);
|
|
OSTD_EXPORT void list_find_item(cs_list_parse_state &ps);
|
|
|
|
OSTD_EXPORT cs_strref value_list_concat(
|
|
cs_state &cs, cs_value_r vals, std::string_view sep = std::string_view{}
|
|
);
|
|
|
|
namespace util {
|
|
template<typename R>
|
|
inline R &&escape_string(R &&writer, std::string_view str) {
|
|
using namespace ostd::string_literals;
|
|
writer.put('"');
|
|
for (auto c: str) {
|
|
switch (c) {
|
|
case '\n':
|
|
ostd::range_put_all(writer, "^n"_sr);
|
|
break;
|
|
case '\t':
|
|
ostd::range_put_all(writer, "^t"_sr);
|
|
break;
|
|
case '\f':
|
|
ostd::range_put_all(writer, "^f"_sr);
|
|
break;
|
|
case '"':
|
|
ostd::range_put_all(writer, "^\""_sr);
|
|
break;
|
|
case '^':
|
|
ostd::range_put_all(writer, "^^"_sr);
|
|
break;
|
|
default:
|
|
writer.put(c);
|
|
break;
|
|
}
|
|
}
|
|
writer.put('"');
|
|
return std::forward<R>(writer);
|
|
}
|
|
|
|
template<typename R>
|
|
inline R &&unescape_string(R &&writer, std::string_view str) {
|
|
for (auto it = str.begin(); it != str.end(); ++it) {
|
|
if (*it == '^') {
|
|
++it;
|
|
if (it == str.end()) {
|
|
break;
|
|
}
|
|
switch (*it) {
|
|
case 'n':
|
|
writer.put('\n');
|
|
break;
|
|
case 't':
|
|
writer.put('\r');
|
|
break;
|
|
case 'f':
|
|
writer.put('\f');
|
|
break;
|
|
case '"':
|
|
writer.put('"');
|
|
break;
|
|
case '^':
|
|
writer.put('^');
|
|
break;
|
|
default:
|
|
writer.put(*it);
|
|
break;
|
|
}
|
|
} else if (*it == '\\') {
|
|
++it;
|
|
if (it == str.end()) {
|
|
break;
|
|
}
|
|
char c = *it;
|
|
if ((c == '\r') || (c == '\n')) {
|
|
if ((c == '\r') && ((it + 1) != str.end())) {
|
|
if (it[1] == '\n') {
|
|
++it;
|
|
}
|
|
}
|
|
continue;
|
|
}
|
|
writer.put('\\');
|
|
} else {
|
|
writer.put(str.front());
|
|
}
|
|
}
|
|
return std::forward<R>(writer);
|
|
}
|
|
|
|
OSTD_EXPORT char const *parse_string(
|
|
cs_state &cs, std::string_view str, size_t &nlines
|
|
);
|
|
|
|
inline char const *parse_string(
|
|
cs_state &cs, std::string_view str
|
|
) {
|
|
size_t nlines;
|
|
return parse_string(cs, str, nlines);
|
|
}
|
|
|
|
OSTD_EXPORT char const *parse_word(cs_state &cs, std::string_view str);
|
|
|
|
template<typename R>
|
|
inline void print_stack(R &&writer, cs_stack_state const &st) {
|
|
auto nd = st.get();
|
|
while (nd) {
|
|
try {
|
|
ostd::format(
|
|
std::forward<R>(writer),
|
|
((nd->index == 1) && st.gap())
|
|
? " ..%d) %s" : " %d) %s",
|
|
nd->index, nd->id->get_name()
|
|
);
|
|
} catch (ostd::format_error const &e) {
|
|
throw cs_internal_error{e.what()};
|
|
}
|
|
nd = nd->next;
|
|
if (nd) {
|
|
writer.put('\n');
|
|
}
|
|
}
|
|
}
|
|
} /* namespace util */
|
|
|
|
} /* namespace cscript */
|
|
|
|
#endif /* LIBCUBESCRIPT_CUBESCRIPT_HH */
|