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2234 lines
80 KiB
2234 lines
80 KiB
#include "sass.hpp"
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#include "functions.hpp"
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#include "ast.hpp"
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#include "context.hpp"
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#include "backtrace.hpp"
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#include "parser.hpp"
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#include "constants.hpp"
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#include "inspect.hpp"
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#include "extend.hpp"
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#include "eval.hpp"
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#include "util.hpp"
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#include "expand.hpp"
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#include "operators.hpp"
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#include "utf8_string.hpp"
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#include "sass/base.h"
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#include "utf8.h"
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#include <cstdint>
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#include <cstdlib>
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#include <cmath>
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#include <cctype>
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#include <sstream>
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#include <string>
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#include <iomanip>
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#include <iostream>
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#include <random>
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#include <set>
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#ifdef __MINGW32__
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#include "windows.h"
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#include "wincrypt.h"
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#endif
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#define ARG(argname, argtype) get_arg<argtype>(argname, env, sig, pstate, traces)
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#define ARGM(argname, argtype, ctx) get_arg_m(argname, env, sig, pstate, traces, ctx)
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// return a number object (copied since we want to have reduced units)
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#define ARGN(argname) get_arg_n(argname, env, sig, pstate, traces) // Number copy
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// special function for weird hsla percent (10px == 10% == 10 != 0.1)
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#define ARGVAL(argname) get_arg_val(argname, env, sig, pstate, traces) // double
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// macros for common ranges (u mean unsigned or upper, r for full range)
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#define DARG_U_FACT(argname) get_arg_r(argname, env, sig, pstate, traces, - 0.0, 1.0) // double
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#define DARG_R_FACT(argname) get_arg_r(argname, env, sig, pstate, traces, - 1.0, 1.0) // double
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#define DARG_U_BYTE(argname) get_arg_r(argname, env, sig, pstate, traces, - 0.0, 255.0) // double
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#define DARG_R_BYTE(argname) get_arg_r(argname, env, sig, pstate, traces, - 255.0, 255.0) // double
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#define DARG_U_PRCT(argname) get_arg_r(argname, env, sig, pstate, traces, - 0.0, 100.0) // double
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#define DARG_R_PRCT(argname) get_arg_r(argname, env, sig, pstate, traces, - 100.0, 100.0) // double
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// macros for color related inputs (rbg and alpha/opacity values)
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#define COLOR_NUM(argname) color_num(argname, env, sig, pstate, traces) // double
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#define ALPHA_NUM(argname) alpha_num(argname, env, sig, pstate, traces) // double
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namespace Sass {
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using std::stringstream;
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using std::endl;
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Definition_Ptr make_native_function(Signature sig, Native_Function func, Context& ctx)
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{
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Parser sig_parser = Parser::from_c_str(sig, ctx, ctx.traces, ParserState("[built-in function]"));
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sig_parser.lex<Prelexer::identifier>();
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std::string name(Util::normalize_underscores(sig_parser.lexed));
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Parameters_Obj params = sig_parser.parse_parameters();
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return SASS_MEMORY_NEW(Definition,
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ParserState("[built-in function]"),
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sig,
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name,
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params,
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func,
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false);
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}
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Definition_Ptr make_c_function(Sass_Function_Entry c_func, Context& ctx)
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{
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using namespace Prelexer;
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const char* sig = sass_function_get_signature(c_func);
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Parser sig_parser = Parser::from_c_str(sig, ctx, ctx.traces, ParserState("[c function]"));
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// allow to overload generic callback plus @warn, @error and @debug with custom functions
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sig_parser.lex < alternatives < identifier, exactly <'*'>,
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exactly < Constants::warn_kwd >,
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exactly < Constants::error_kwd >,
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exactly < Constants::debug_kwd >
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> >();
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std::string name(Util::normalize_underscores(sig_parser.lexed));
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Parameters_Obj params = sig_parser.parse_parameters();
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return SASS_MEMORY_NEW(Definition,
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ParserState("[c function]"),
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sig,
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name,
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params,
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c_func,
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false, true);
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}
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std::string function_name(Signature sig)
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{
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std::string str(sig);
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return str.substr(0, str.find('('));
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}
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namespace Functions {
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inline void handle_utf8_error (const ParserState& pstate, Backtraces traces)
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{
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try {
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throw;
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}
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catch (utf8::invalid_code_point) {
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std::string msg("utf8::invalid_code_point");
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error(msg, pstate, traces);
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}
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catch (utf8::not_enough_room) {
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std::string msg("utf8::not_enough_room");
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error(msg, pstate, traces);
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}
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catch (utf8::invalid_utf8) {
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std::string msg("utf8::invalid_utf8");
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error(msg, pstate, traces);
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}
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catch (...) { throw; }
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}
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template <typename T>
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T* get_arg(const std::string& argname, Env& env, Signature sig, ParserState pstate, Backtraces traces)
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{
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// Minimal error handling -- the expectation is that built-ins will be written correctly!
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T* val = Cast<T>(env[argname]);
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if (!val) {
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std::string msg("argument `");
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msg += argname;
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msg += "` of `";
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msg += sig;
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msg += "` must be a ";
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msg += T::type_name();
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error(msg, pstate, traces);
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}
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return val;
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}
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Map_Ptr get_arg_m(const std::string& argname, Env& env, Signature sig, ParserState pstate, Backtraces traces, Context& ctx)
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{
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// Minimal error handling -- the expectation is that built-ins will be written correctly!
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Map_Ptr val = Cast<Map>(env[argname]);
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if (val) return val;
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List_Ptr lval = Cast<List>(env[argname]);
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if (lval && lval->length() == 0) return SASS_MEMORY_NEW(Map, pstate, 0);
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// fallback on get_arg for error handling
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val = get_arg<Map>(argname, env, sig, pstate, traces);
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return val;
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}
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double get_arg_r(const std::string& argname, Env& env, Signature sig, ParserState pstate, Backtraces traces, double lo, double hi)
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{
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// Minimal error handling -- the expectation is that built-ins will be written correctly!
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Number_Ptr val = get_arg<Number>(argname, env, sig, pstate, traces);
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Number tmpnr(val);
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tmpnr.reduce();
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double v = tmpnr.value();
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if (!(lo <= v && v <= hi)) {
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std::stringstream msg;
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msg << "argument `" << argname << "` of `" << sig << "` must be between ";
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msg << lo << " and " << hi;
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error(msg.str(), pstate, traces);
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}
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return v;
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}
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Number_Ptr get_arg_n(const std::string& argname, Env& env, Signature sig, ParserState pstate, Backtraces traces)
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{
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// Minimal error handling -- the expectation is that built-ins will be written correctly!
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Number_Ptr val = get_arg<Number>(argname, env, sig, pstate, traces);
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val = SASS_MEMORY_COPY(val);
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val->reduce();
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return val;
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}
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double get_arg_v(const std::string& argname, Env& env, Signature sig, ParserState pstate, Backtraces traces)
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{
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// Minimal error handling -- the expectation is that built-ins will be written correctly!
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Number_Ptr val = get_arg<Number>(argname, env, sig, pstate, traces);
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Number tmpnr(val);
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tmpnr.reduce();
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/*
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if (tmpnr.unit() == "%") {
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tmpnr.value(tmpnr.value() / 100);
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tmpnr.numerators.clear();
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} else {
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if (!tmpnr.is_unitless()) error("argument " + argname + " of `" + std::string(sig) + "` must be unitless", pstate);
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}
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*/
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return tmpnr.value();
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}
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double get_arg_val(const std::string& argname, Env& env, Signature sig, ParserState pstate, Backtraces traces)
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{
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// Minimal error handling -- the expectation is that built-ins will be written correctly!
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Number_Ptr val = get_arg<Number>(argname, env, sig, pstate, traces);
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Number tmpnr(val);
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tmpnr.reduce();
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return tmpnr.value();
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}
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double color_num(const std::string& argname, Env& env, Signature sig, ParserState pstate, Backtraces traces)
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{
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Number_Ptr val = get_arg<Number>(argname, env, sig, pstate, traces);
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Number tmpnr(val);
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tmpnr.reduce();
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if (tmpnr.unit() == "%") {
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return std::min(std::max(tmpnr.value() * 255 / 100.0, 0.0), 255.0);
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} else {
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return std::min(std::max(tmpnr.value(), 0.0), 255.0);
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}
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}
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inline double alpha_num(const std::string& argname, Env& env, Signature sig, ParserState pstate, Backtraces traces) {
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Number_Ptr val = get_arg<Number>(argname, env, sig, pstate, traces);
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Number tmpnr(val);
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tmpnr.reduce();
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if (tmpnr.unit() == "%") {
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return std::min(std::max(tmpnr.value(), 0.0), 100.0);
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} else {
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return std::min(std::max(tmpnr.value(), 0.0), 1.0);
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}
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}
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#define ARGSEL(argname, seltype, contextualize) get_arg_sel<seltype>(argname, env, sig, pstate, traces, ctx)
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template <typename T>
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T get_arg_sel(const std::string& argname, Env& env, Signature sig, ParserState pstate, Backtraces traces, Context& ctx);
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template <>
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Selector_List_Obj get_arg_sel(const std::string& argname, Env& env, Signature sig, ParserState pstate, Backtraces traces, Context& ctx) {
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Expression_Obj exp = ARG(argname, Expression);
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if (exp->concrete_type() == Expression::NULL_VAL) {
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std::stringstream msg;
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msg << argname << ": null is not a valid selector: it must be a string,\n";
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msg << "a list of strings, or a list of lists of strings for `" << function_name(sig) << "'";
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error(msg.str(), pstate, traces);
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}
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if (String_Constant_Ptr str = Cast<String_Constant>(exp)) {
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str->quote_mark(0);
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}
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std::string exp_src = exp->to_string(ctx.c_options);
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return Parser::parse_selector(exp_src.c_str(), ctx, traces);
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}
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template <>
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Compound_Selector_Obj get_arg_sel(const std::string& argname, Env& env, Signature sig, ParserState pstate, Backtraces traces, Context& ctx) {
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Expression_Obj exp = ARG(argname, Expression);
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if (exp->concrete_type() == Expression::NULL_VAL) {
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std::stringstream msg;
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msg << argname << ": null is not a string for `" << function_name(sig) << "'";
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error(msg.str(), pstate, traces);
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}
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if (String_Constant_Ptr str = Cast<String_Constant>(exp)) {
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str->quote_mark(0);
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}
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std::string exp_src = exp->to_string(ctx.c_options);
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Selector_List_Obj sel_list = Parser::parse_selector(exp_src.c_str(), ctx, traces);
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if (sel_list->length() == 0) return NULL;
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Complex_Selector_Obj first = sel_list->first();
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if (!first->tail()) return first->head();
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return first->tail()->head();
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}
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#ifdef __MINGW32__
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uint64_t GetSeed()
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{
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HCRYPTPROV hp = 0;
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BYTE rb[8];
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CryptAcquireContext(&hp, 0, 0, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT);
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CryptGenRandom(hp, sizeof(rb), rb);
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CryptReleaseContext(hp, 0);
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uint64_t seed;
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memcpy(&seed, &rb[0], sizeof(seed));
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return seed;
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}
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#else
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uint64_t GetSeed()
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{
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std::random_device rd;
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return rd();
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}
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#endif
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// note: the performance of many implementations of
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// random_device degrades sharply once the entropy pool
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// is exhausted. For practical use, random_device is
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// generally only used to seed a PRNG such as mt19937.
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static std::mt19937 rand(static_cast<unsigned int>(GetSeed()));
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// features
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static std::set<std::string> features {
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"global-variable-shadowing",
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"extend-selector-pseudoclass",
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"at-error",
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"units-level-3",
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"custom-property"
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};
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////////////////
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// RGB FUNCTIONS
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////////////////
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inline bool special_number(String_Constant_Ptr s) {
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if (s) {
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std::string calc("calc(");
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std::string var("var(");
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std::string ss(s->value());
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return std::equal(calc.begin(), calc.end(), ss.begin()) ||
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std::equal(var.begin(), var.end(), ss.begin());
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}
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return false;
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}
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Signature rgb_sig = "rgb($red, $green, $blue)";
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BUILT_IN(rgb)
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{
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if (
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special_number(Cast<String_Constant>(env["$red"])) ||
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special_number(Cast<String_Constant>(env["$green"])) ||
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special_number(Cast<String_Constant>(env["$blue"]))
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) {
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return SASS_MEMORY_NEW(String_Constant, pstate, "rgb("
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+ env["$red"]->to_string()
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+ ", "
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+ env["$green"]->to_string()
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+ ", "
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+ env["$blue"]->to_string()
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+ ")"
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);
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}
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return SASS_MEMORY_NEW(Color,
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pstate,
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COLOR_NUM("$red"),
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COLOR_NUM("$green"),
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COLOR_NUM("$blue"));
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}
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Signature rgba_4_sig = "rgba($red, $green, $blue, $alpha)";
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BUILT_IN(rgba_4)
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{
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if (
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special_number(Cast<String_Constant>(env["$red"])) ||
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special_number(Cast<String_Constant>(env["$green"])) ||
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special_number(Cast<String_Constant>(env["$blue"])) ||
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special_number(Cast<String_Constant>(env["$alpha"]))
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) {
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return SASS_MEMORY_NEW(String_Constant, pstate, "rgba("
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+ env["$red"]->to_string()
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+ ", "
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+ env["$green"]->to_string()
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+ ", "
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+ env["$blue"]->to_string()
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+ ", "
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+ env["$alpha"]->to_string()
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+ ")"
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);
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}
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return SASS_MEMORY_NEW(Color,
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pstate,
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COLOR_NUM("$red"),
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COLOR_NUM("$green"),
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COLOR_NUM("$blue"),
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ALPHA_NUM("$alpha"));
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}
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Signature rgba_2_sig = "rgba($color, $alpha)";
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BUILT_IN(rgba_2)
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{
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if (
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special_number(Cast<String_Constant>(env["$color"]))
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) {
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return SASS_MEMORY_NEW(String_Constant, pstate, "rgba("
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+ env["$color"]->to_string()
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+ ", "
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+ env["$alpha"]->to_string()
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+ ")"
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);
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}
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Color_Ptr c_arg = ARG("$color", Color);
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if (
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special_number(Cast<String_Constant>(env["$alpha"]))
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) {
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std::stringstream strm;
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strm << "rgba("
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<< (int)c_arg->r() << ", "
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<< (int)c_arg->g() << ", "
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<< (int)c_arg->b() << ", "
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<< env["$alpha"]->to_string()
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<< ")";
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return SASS_MEMORY_NEW(String_Constant, pstate, strm.str());
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}
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Color_Ptr new_c = SASS_MEMORY_COPY(c_arg);
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new_c->a(ALPHA_NUM("$alpha"));
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new_c->disp("");
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return new_c;
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}
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Signature red_sig = "red($color)";
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BUILT_IN(red)
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{ return SASS_MEMORY_NEW(Number, pstate, ARG("$color", Color)->r()); }
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Signature green_sig = "green($color)";
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BUILT_IN(green)
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{ return SASS_MEMORY_NEW(Number, pstate, ARG("$color", Color)->g()); }
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Signature blue_sig = "blue($color)";
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BUILT_IN(blue)
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{ return SASS_MEMORY_NEW(Number, pstate, ARG("$color", Color)->b()); }
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Color* colormix(Context& ctx, ParserState& pstate, Color* color1, Color* color2, double weight) {
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double p = weight/100;
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double w = 2*p - 1;
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double a = color1->a() - color2->a();
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double w1 = (((w * a == -1) ? w : (w + a)/(1 + w*a)) + 1)/2.0;
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double w2 = 1 - w1;
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return SASS_MEMORY_NEW(Color,
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pstate,
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Sass::round(w1*color1->r() + w2*color2->r(), ctx.c_options.precision),
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Sass::round(w1*color1->g() + w2*color2->g(), ctx.c_options.precision),
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Sass::round(w1*color1->b() + w2*color2->b(), ctx.c_options.precision),
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color1->a()*p + color2->a()*(1-p));
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}
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Signature mix_sig = "mix($color-1, $color-2, $weight: 50%)";
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BUILT_IN(mix)
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{
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Color_Obj color1 = ARG("$color-1", Color);
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Color_Obj color2 = ARG("$color-2", Color);
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double weight = DARG_U_PRCT("$weight");
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return colormix(ctx, pstate, color1, color2, weight);
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}
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////////////////
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// HSL FUNCTIONS
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////////////////
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// RGB to HSL helper function
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struct HSL { double h; double s; double l; };
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HSL rgb_to_hsl(double r, double g, double b)
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{
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// Algorithm from http://en.wikipedia.org/wiki/wHSL_and_HSV#Conversion_from_RGB_to_HSL_or_HSV
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r /= 255.0; g /= 255.0; b /= 255.0;
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double max = std::max(r, std::max(g, b));
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double min = std::min(r, std::min(g, b));
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double delta = max - min;
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double h = 0;
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double s;
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double l = (max + min) / 2.0;
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if (NEAR_EQUAL(max, min)) {
|
|
h = s = 0; // achromatic
|
|
}
|
|
else {
|
|
if (l < 0.5) s = delta / (max + min);
|
|
else s = delta / (2.0 - max - min);
|
|
|
|
if (r == max) h = (g - b) / delta + (g < b ? 6 : 0);
|
|
else if (g == max) h = (b - r) / delta + 2;
|
|
else if (b == max) h = (r - g) / delta + 4;
|
|
}
|
|
|
|
HSL hsl_struct;
|
|
hsl_struct.h = h / 6 * 360;
|
|
hsl_struct.s = s * 100;
|
|
hsl_struct.l = l * 100;
|
|
|
|
return hsl_struct;
|
|
}
|
|
|
|
// hue to RGB helper function
|
|
double h_to_rgb(double m1, double m2, double h) {
|
|
while (h < 0) h += 1;
|
|
while (h > 1) h -= 1;
|
|
if (h*6.0 < 1) return m1 + (m2 - m1)*h*6;
|
|
if (h*2.0 < 1) return m2;
|
|
if (h*3.0 < 2) return m1 + (m2 - m1) * (2.0/3.0 - h)*6;
|
|
return m1;
|
|
}
|
|
|
|
Color_Ptr hsla_impl(double h, double s, double l, double a, Context& ctx, ParserState pstate)
|
|
{
|
|
h /= 360.0;
|
|
s /= 100.0;
|
|
l /= 100.0;
|
|
|
|
if (l < 0) l = 0;
|
|
if (s < 0) s = 0;
|
|
if (l > 1) l = 1;
|
|
if (s > 1) s = 1;
|
|
while (h < 0) h += 1;
|
|
while (h > 1) h -= 1;
|
|
|
|
// if saturation is exacly zero, we loose
|
|
// information for hue, since it will evaluate
|
|
// to zero if converted back from rgb. Setting
|
|
// saturation to a very tiny number solves this.
|
|
if (s == 0) s = 1e-10;
|
|
|
|
// Algorithm from the CSS3 spec: http://www.w3.org/TR/css3-color/#hsl-color.
|
|
double m2;
|
|
if (l <= 0.5) m2 = l*(s+1.0);
|
|
else m2 = (l+s)-(l*s);
|
|
double m1 = (l*2.0)-m2;
|
|
// round the results -- consider moving this into the Color constructor
|
|
double r = (h_to_rgb(m1, m2, h + 1.0/3.0) * 255.0);
|
|
double g = (h_to_rgb(m1, m2, h) * 255.0);
|
|
double b = (h_to_rgb(m1, m2, h - 1.0/3.0) * 255.0);
|
|
|
|
return SASS_MEMORY_NEW(Color, pstate, r, g, b, a);
|
|
}
|
|
|
|
Signature hsl_sig = "hsl($hue, $saturation, $lightness)";
|
|
BUILT_IN(hsl)
|
|
{
|
|
if (
|
|
special_number(Cast<String_Constant>(env["$hue"])) ||
|
|
special_number(Cast<String_Constant>(env["$saturation"])) ||
|
|
special_number(Cast<String_Constant>(env["$lightness"]))
|
|
) {
|
|
return SASS_MEMORY_NEW(String_Constant, pstate, "hsl("
|
|
+ env["$hue"]->to_string()
|
|
+ ", "
|
|
+ env["$saturation"]->to_string()
|
|
+ ", "
|
|
+ env["$lightness"]->to_string()
|
|
+ ")"
|
|
);
|
|
}
|
|
|
|
return hsla_impl(ARGVAL("$hue"),
|
|
ARGVAL("$saturation"),
|
|
ARGVAL("$lightness"),
|
|
1.0,
|
|
ctx,
|
|
pstate);
|
|
}
|
|
|
|
Signature hsla_sig = "hsla($hue, $saturation, $lightness, $alpha)";
|
|
BUILT_IN(hsla)
|
|
{
|
|
if (
|
|
special_number(Cast<String_Constant>(env["$hue"])) ||
|
|
special_number(Cast<String_Constant>(env["$saturation"])) ||
|
|
special_number(Cast<String_Constant>(env["$lightness"])) ||
|
|
special_number(Cast<String_Constant>(env["$alpha"]))
|
|
) {
|
|
return SASS_MEMORY_NEW(String_Constant, pstate, "hsla("
|
|
+ env["$hue"]->to_string()
|
|
+ ", "
|
|
+ env["$saturation"]->to_string()
|
|
+ ", "
|
|
+ env["$lightness"]->to_string()
|
|
+ ", "
|
|
+ env["$alpha"]->to_string()
|
|
+ ")"
|
|
);
|
|
}
|
|
|
|
return hsla_impl(ARGVAL("$hue"),
|
|
ARGVAL("$saturation"),
|
|
ARGVAL("$lightness"),
|
|
ARGVAL("$alpha"),
|
|
ctx,
|
|
pstate);
|
|
}
|
|
|
|
Signature hue_sig = "hue($color)";
|
|
BUILT_IN(hue)
|
|
{
|
|
Color_Ptr rgb_color = ARG("$color", Color);
|
|
HSL hsl_color = rgb_to_hsl(rgb_color->r(),
|
|
rgb_color->g(),
|
|
rgb_color->b());
|
|
return SASS_MEMORY_NEW(Number, pstate, hsl_color.h, "deg");
|
|
}
|
|
|
|
Signature saturation_sig = "saturation($color)";
|
|
BUILT_IN(saturation)
|
|
{
|
|
Color_Ptr rgb_color = ARG("$color", Color);
|
|
HSL hsl_color = rgb_to_hsl(rgb_color->r(),
|
|
rgb_color->g(),
|
|
rgb_color->b());
|
|
return SASS_MEMORY_NEW(Number, pstate, hsl_color.s, "%");
|
|
}
|
|
|
|
Signature lightness_sig = "lightness($color)";
|
|
BUILT_IN(lightness)
|
|
{
|
|
Color_Ptr rgb_color = ARG("$color", Color);
|
|
HSL hsl_color = rgb_to_hsl(rgb_color->r(),
|
|
rgb_color->g(),
|
|
rgb_color->b());
|
|
return SASS_MEMORY_NEW(Number, pstate, hsl_color.l, "%");
|
|
}
|
|
|
|
Signature adjust_hue_sig = "adjust-hue($color, $degrees)";
|
|
BUILT_IN(adjust_hue)
|
|
{
|
|
Color_Ptr rgb_color = ARG("$color", Color);
|
|
double degrees = ARGVAL("$degrees");
|
|
HSL hsl_color = rgb_to_hsl(rgb_color->r(),
|
|
rgb_color->g(),
|
|
rgb_color->b());
|
|
return hsla_impl(hsl_color.h + degrees,
|
|
hsl_color.s,
|
|
hsl_color.l,
|
|
rgb_color->a(),
|
|
ctx,
|
|
pstate);
|
|
}
|
|
|
|
Signature lighten_sig = "lighten($color, $amount)";
|
|
BUILT_IN(lighten)
|
|
{
|
|
Color_Ptr rgb_color = ARG("$color", Color);
|
|
double amount = DARG_U_PRCT("$amount");
|
|
HSL hsl_color = rgb_to_hsl(rgb_color->r(),
|
|
rgb_color->g(),
|
|
rgb_color->b());
|
|
//Check lightness is not negative before lighten it
|
|
double hslcolorL = hsl_color.l;
|
|
if (hslcolorL < 0) {
|
|
hslcolorL = 0;
|
|
}
|
|
|
|
return hsla_impl(hsl_color.h,
|
|
hsl_color.s,
|
|
hslcolorL + amount,
|
|
rgb_color->a(),
|
|
ctx,
|
|
pstate);
|
|
}
|
|
|
|
Signature darken_sig = "darken($color, $amount)";
|
|
BUILT_IN(darken)
|
|
{
|
|
Color_Ptr rgb_color = ARG("$color", Color);
|
|
double amount = DARG_U_PRCT("$amount");
|
|
HSL hsl_color = rgb_to_hsl(rgb_color->r(),
|
|
rgb_color->g(),
|
|
rgb_color->b());
|
|
|
|
//Check lightness if not over 100, before darken it
|
|
double hslcolorL = hsl_color.l;
|
|
if (hslcolorL > 100) {
|
|
hslcolorL = 100;
|
|
}
|
|
|
|
return hsla_impl(hsl_color.h,
|
|
hsl_color.s,
|
|
hslcolorL - amount,
|
|
rgb_color->a(),
|
|
ctx,
|
|
pstate);
|
|
}
|
|
|
|
Signature saturate_sig = "saturate($color, $amount: false)";
|
|
BUILT_IN(saturate)
|
|
{
|
|
// CSS3 filter function overload: pass literal through directly
|
|
if (!Cast<Number>(env["$amount"])) {
|
|
return SASS_MEMORY_NEW(String_Quoted, pstate, "saturate(" + env["$color"]->to_string(ctx.c_options) + ")");
|
|
}
|
|
|
|
double amount = DARG_U_PRCT("$amount");
|
|
Color_Ptr rgb_color = ARG("$color", Color);
|
|
HSL hsl_color = rgb_to_hsl(rgb_color->r(),
|
|
rgb_color->g(),
|
|
rgb_color->b());
|
|
|
|
double hslcolorS = hsl_color.s + amount;
|
|
|
|
// Saturation cannot be below 0 or above 100
|
|
if (hslcolorS < 0) {
|
|
hslcolorS = 0;
|
|
}
|
|
if (hslcolorS > 100) {
|
|
hslcolorS = 100;
|
|
}
|
|
|
|
return hsla_impl(hsl_color.h,
|
|
hslcolorS,
|
|
hsl_color.l,
|
|
rgb_color->a(),
|
|
ctx,
|
|
pstate);
|
|
}
|
|
|
|
Signature desaturate_sig = "desaturate($color, $amount)";
|
|
BUILT_IN(desaturate)
|
|
{
|
|
Color_Ptr rgb_color = ARG("$color", Color);
|
|
double amount = DARG_U_PRCT("$amount");
|
|
HSL hsl_color = rgb_to_hsl(rgb_color->r(),
|
|
rgb_color->g(),
|
|
rgb_color->b());
|
|
|
|
double hslcolorS = hsl_color.s - amount;
|
|
|
|
// Saturation cannot be below 0 or above 100
|
|
if (hslcolorS <= 0) {
|
|
hslcolorS = 0;
|
|
}
|
|
if (hslcolorS > 100) {
|
|
hslcolorS = 100;
|
|
}
|
|
|
|
return hsla_impl(hsl_color.h,
|
|
hslcolorS,
|
|
hsl_color.l,
|
|
rgb_color->a(),
|
|
ctx,
|
|
pstate);
|
|
}
|
|
|
|
Signature grayscale_sig = "grayscale($color)";
|
|
BUILT_IN(grayscale)
|
|
{
|
|
// CSS3 filter function overload: pass literal through directly
|
|
Number_Ptr amount = Cast<Number>(env["$color"]);
|
|
if (amount) {
|
|
return SASS_MEMORY_NEW(String_Quoted, pstate, "grayscale(" + amount->to_string(ctx.c_options) + ")");
|
|
}
|
|
|
|
Color_Ptr rgb_color = ARG("$color", Color);
|
|
HSL hsl_color = rgb_to_hsl(rgb_color->r(),
|
|
rgb_color->g(),
|
|
rgb_color->b());
|
|
return hsla_impl(hsl_color.h,
|
|
0.0,
|
|
hsl_color.l,
|
|
rgb_color->a(),
|
|
ctx,
|
|
pstate);
|
|
}
|
|
|
|
Signature complement_sig = "complement($color)";
|
|
BUILT_IN(complement)
|
|
{
|
|
Color_Ptr rgb_color = ARG("$color", Color);
|
|
HSL hsl_color = rgb_to_hsl(rgb_color->r(),
|
|
rgb_color->g(),
|
|
rgb_color->b());
|
|
return hsla_impl(hsl_color.h - 180.0,
|
|
hsl_color.s,
|
|
hsl_color.l,
|
|
rgb_color->a(),
|
|
ctx,
|
|
pstate);
|
|
}
|
|
|
|
Signature invert_sig = "invert($color, $weight: 100%)";
|
|
BUILT_IN(invert)
|
|
{
|
|
// CSS3 filter function overload: pass literal through directly
|
|
Number_Ptr amount = Cast<Number>(env["$color"]);
|
|
if (amount) {
|
|
return SASS_MEMORY_NEW(String_Quoted, pstate, "invert(" + amount->to_string(ctx.c_options) + ")");
|
|
}
|
|
|
|
double weight = DARG_U_PRCT("$weight");
|
|
Color_Ptr rgb_color = ARG("$color", Color);
|
|
Color_Obj inv = SASS_MEMORY_NEW(Color,
|
|
pstate,
|
|
255 - rgb_color->r(),
|
|
255 - rgb_color->g(),
|
|
255 - rgb_color->b(),
|
|
rgb_color->a());
|
|
return colormix(ctx, pstate, inv, rgb_color, weight);
|
|
}
|
|
|
|
////////////////////
|
|
// OPACITY FUNCTIONS
|
|
////////////////////
|
|
Signature alpha_sig = "alpha($color)";
|
|
Signature opacity_sig = "opacity($color)";
|
|
BUILT_IN(alpha)
|
|
{
|
|
String_Constant_Ptr ie_kwd = Cast<String_Constant>(env["$color"]);
|
|
if (ie_kwd) {
|
|
return SASS_MEMORY_NEW(String_Quoted, pstate, "alpha(" + ie_kwd->value() + ")");
|
|
}
|
|
|
|
// CSS3 filter function overload: pass literal through directly
|
|
Number_Ptr amount = Cast<Number>(env["$color"]);
|
|
if (amount) {
|
|
return SASS_MEMORY_NEW(String_Quoted, pstate, "opacity(" + amount->to_string(ctx.c_options) + ")");
|
|
}
|
|
|
|
return SASS_MEMORY_NEW(Number, pstate, ARG("$color", Color)->a());
|
|
}
|
|
|
|
Signature opacify_sig = "opacify($color, $amount)";
|
|
Signature fade_in_sig = "fade-in($color, $amount)";
|
|
BUILT_IN(opacify)
|
|
{
|
|
Color_Ptr color = ARG("$color", Color);
|
|
double amount = DARG_U_FACT("$amount");
|
|
double alpha = std::min(color->a() + amount, 1.0);
|
|
return SASS_MEMORY_NEW(Color,
|
|
pstate,
|
|
color->r(),
|
|
color->g(),
|
|
color->b(),
|
|
alpha);
|
|
}
|
|
|
|
Signature transparentize_sig = "transparentize($color, $amount)";
|
|
Signature fade_out_sig = "fade-out($color, $amount)";
|
|
BUILT_IN(transparentize)
|
|
{
|
|
Color_Ptr color = ARG("$color", Color);
|
|
double amount = DARG_U_FACT("$amount");
|
|
double alpha = std::max(color->a() - amount, 0.0);
|
|
return SASS_MEMORY_NEW(Color,
|
|
pstate,
|
|
color->r(),
|
|
color->g(),
|
|
color->b(),
|
|
alpha);
|
|
}
|
|
|
|
////////////////////////
|
|
// OTHER COLOR FUNCTIONS
|
|
////////////////////////
|
|
|
|
Signature adjust_color_sig = "adjust-color($color, $red: false, $green: false, $blue: false, $hue: false, $saturation: false, $lightness: false, $alpha: false)";
|
|
BUILT_IN(adjust_color)
|
|
{
|
|
Color_Ptr color = ARG("$color", Color);
|
|
Number_Ptr r = Cast<Number>(env["$red"]);
|
|
Number_Ptr g = Cast<Number>(env["$green"]);
|
|
Number_Ptr b = Cast<Number>(env["$blue"]);
|
|
Number_Ptr h = Cast<Number>(env["$hue"]);
|
|
Number_Ptr s = Cast<Number>(env["$saturation"]);
|
|
Number_Ptr l = Cast<Number>(env["$lightness"]);
|
|
Number_Ptr a = Cast<Number>(env["$alpha"]);
|
|
|
|
bool rgb = r || g || b;
|
|
bool hsl = h || s || l;
|
|
|
|
if (rgb && hsl) {
|
|
error("Cannot specify HSL and RGB values for a color at the same time for `adjust-color'", pstate, traces);
|
|
}
|
|
if (rgb) {
|
|
double rr = r ? DARG_R_BYTE("$red") : 0;
|
|
double gg = g ? DARG_R_BYTE("$green") : 0;
|
|
double bb = b ? DARG_R_BYTE("$blue") : 0;
|
|
double aa = a ? DARG_R_FACT("$alpha") : 0;
|
|
return SASS_MEMORY_NEW(Color,
|
|
pstate,
|
|
color->r() + rr,
|
|
color->g() + gg,
|
|
color->b() + bb,
|
|
color->a() + aa);
|
|
}
|
|
if (hsl) {
|
|
HSL hsl_struct = rgb_to_hsl(color->r(), color->g(), color->b());
|
|
double ss = s ? DARG_R_PRCT("$saturation") : 0;
|
|
double ll = l ? DARG_R_PRCT("$lightness") : 0;
|
|
double aa = a ? DARG_R_FACT("$alpha") : 0;
|
|
return hsla_impl(hsl_struct.h + (h ? h->value() : 0),
|
|
hsl_struct.s + ss,
|
|
hsl_struct.l + ll,
|
|
color->a() + aa,
|
|
ctx,
|
|
pstate);
|
|
}
|
|
if (a) {
|
|
return SASS_MEMORY_NEW(Color,
|
|
pstate,
|
|
color->r(),
|
|
color->g(),
|
|
color->b(),
|
|
color->a() + (a ? a->value() : 0));
|
|
}
|
|
error("not enough arguments for `adjust-color'", pstate, traces);
|
|
// unreachable
|
|
return color;
|
|
}
|
|
|
|
Signature scale_color_sig = "scale-color($color, $red: false, $green: false, $blue: false, $hue: false, $saturation: false, $lightness: false, $alpha: false)";
|
|
BUILT_IN(scale_color)
|
|
{
|
|
Color_Ptr color = ARG("$color", Color);
|
|
Number_Ptr r = Cast<Number>(env["$red"]);
|
|
Number_Ptr g = Cast<Number>(env["$green"]);
|
|
Number_Ptr b = Cast<Number>(env["$blue"]);
|
|
Number_Ptr h = Cast<Number>(env["$hue"]);
|
|
Number_Ptr s = Cast<Number>(env["$saturation"]);
|
|
Number_Ptr l = Cast<Number>(env["$lightness"]);
|
|
Number_Ptr a = Cast<Number>(env["$alpha"]);
|
|
|
|
bool rgb = r || g || b;
|
|
bool hsl = h || s || l;
|
|
|
|
if (rgb && hsl) {
|
|
error("Cannot specify HSL and RGB values for a color at the same time for `scale-color'", pstate, traces);
|
|
}
|
|
if (rgb) {
|
|
double rscale = (r ? DARG_R_PRCT("$red") : 0.0) / 100.0;
|
|
double gscale = (g ? DARG_R_PRCT("$green") : 0.0) / 100.0;
|
|
double bscale = (b ? DARG_R_PRCT("$blue") : 0.0) / 100.0;
|
|
double ascale = (a ? DARG_R_PRCT("$alpha") : 0.0) / 100.0;
|
|
return SASS_MEMORY_NEW(Color,
|
|
pstate,
|
|
color->r() + rscale * (rscale > 0.0 ? 255 - color->r() : color->r()),
|
|
color->g() + gscale * (gscale > 0.0 ? 255 - color->g() : color->g()),
|
|
color->b() + bscale * (bscale > 0.0 ? 255 - color->b() : color->b()),
|
|
color->a() + ascale * (ascale > 0.0 ? 1.0 - color->a() : color->a()));
|
|
}
|
|
if (hsl) {
|
|
double hscale = (h ? DARG_R_PRCT("$hue") : 0.0) / 100.0;
|
|
double sscale = (s ? DARG_R_PRCT("$saturation") : 0.0) / 100.0;
|
|
double lscale = (l ? DARG_R_PRCT("$lightness") : 0.0) / 100.0;
|
|
double ascale = (a ? DARG_R_PRCT("$alpha") : 0.0) / 100.0;
|
|
HSL hsl_struct = rgb_to_hsl(color->r(), color->g(), color->b());
|
|
hsl_struct.h += hscale * (hscale > 0.0 ? 360.0 - hsl_struct.h : hsl_struct.h);
|
|
hsl_struct.s += sscale * (sscale > 0.0 ? 100.0 - hsl_struct.s : hsl_struct.s);
|
|
hsl_struct.l += lscale * (lscale > 0.0 ? 100.0 - hsl_struct.l : hsl_struct.l);
|
|
double alpha = color->a() + ascale * (ascale > 0.0 ? 1.0 - color->a() : color->a());
|
|
return hsla_impl(hsl_struct.h, hsl_struct.s, hsl_struct.l, alpha, ctx, pstate);
|
|
}
|
|
if (a) {
|
|
double ascale = (DARG_R_PRCT("$alpha")) / 100.0;
|
|
return SASS_MEMORY_NEW(Color,
|
|
pstate,
|
|
color->r(),
|
|
color->g(),
|
|
color->b(),
|
|
color->a() + ascale * (ascale > 0.0 ? 1.0 - color->a() : color->a()));
|
|
}
|
|
error("not enough arguments for `scale-color'", pstate, traces);
|
|
// unreachable
|
|
return color;
|
|
}
|
|
|
|
Signature change_color_sig = "change-color($color, $red: false, $green: false, $blue: false, $hue: false, $saturation: false, $lightness: false, $alpha: false)";
|
|
BUILT_IN(change_color)
|
|
{
|
|
Color_Ptr color = ARG("$color", Color);
|
|
Number_Ptr r = Cast<Number>(env["$red"]);
|
|
Number_Ptr g = Cast<Number>(env["$green"]);
|
|
Number_Ptr b = Cast<Number>(env["$blue"]);
|
|
Number_Ptr h = Cast<Number>(env["$hue"]);
|
|
Number_Ptr s = Cast<Number>(env["$saturation"]);
|
|
Number_Ptr l = Cast<Number>(env["$lightness"]);
|
|
Number_Ptr a = Cast<Number>(env["$alpha"]);
|
|
|
|
bool rgb = r || g || b;
|
|
bool hsl = h || s || l;
|
|
|
|
if (rgb && hsl) {
|
|
error("Cannot specify HSL and RGB values for a color at the same time for `change-color'", pstate, traces);
|
|
}
|
|
if (rgb) {
|
|
return SASS_MEMORY_NEW(Color,
|
|
pstate,
|
|
r ? DARG_U_BYTE("$red") : color->r(),
|
|
g ? DARG_U_BYTE("$green") : color->g(),
|
|
b ? DARG_U_BYTE("$blue") : color->b(),
|
|
a ? DARG_U_BYTE("$alpha") : color->a());
|
|
}
|
|
if (hsl) {
|
|
HSL hsl_struct = rgb_to_hsl(color->r(), color->g(), color->b());
|
|
if (h) hsl_struct.h = std::fmod(h->value(), 360.0);
|
|
if (s) hsl_struct.s = DARG_U_PRCT("$saturation");
|
|
if (l) hsl_struct.l = DARG_U_PRCT("$lightness");
|
|
double alpha = a ? DARG_U_FACT("$alpha") : color->a();
|
|
return hsla_impl(hsl_struct.h, hsl_struct.s, hsl_struct.l, alpha, ctx, pstate);
|
|
}
|
|
if (a) {
|
|
double alpha = DARG_U_FACT("$alpha");
|
|
return SASS_MEMORY_NEW(Color,
|
|
pstate,
|
|
color->r(),
|
|
color->g(),
|
|
color->b(),
|
|
alpha);
|
|
}
|
|
error("not enough arguments for `change-color'", pstate, traces);
|
|
// unreachable
|
|
return color;
|
|
}
|
|
|
|
template <size_t range>
|
|
static double cap_channel(double c) {
|
|
if (c > range) return range;
|
|
else if (c < 0) return 0;
|
|
else return c;
|
|
}
|
|
|
|
Signature ie_hex_str_sig = "ie-hex-str($color)";
|
|
BUILT_IN(ie_hex_str)
|
|
{
|
|
Color_Ptr c = ARG("$color", Color);
|
|
double r = cap_channel<0xff>(c->r());
|
|
double g = cap_channel<0xff>(c->g());
|
|
double b = cap_channel<0xff>(c->b());
|
|
double a = cap_channel<1> (c->a()) * 255;
|
|
|
|
std::stringstream ss;
|
|
ss << '#' << std::setw(2) << std::setfill('0');
|
|
ss << std::hex << std::setw(2) << static_cast<unsigned long>(Sass::round(a, ctx.c_options.precision));
|
|
ss << std::hex << std::setw(2) << static_cast<unsigned long>(Sass::round(r, ctx.c_options.precision));
|
|
ss << std::hex << std::setw(2) << static_cast<unsigned long>(Sass::round(g, ctx.c_options.precision));
|
|
ss << std::hex << std::setw(2) << static_cast<unsigned long>(Sass::round(b, ctx.c_options.precision));
|
|
|
|
std::string result(ss.str());
|
|
for (size_t i = 0, L = result.length(); i < L; ++i) {
|
|
result[i] = std::toupper(result[i]);
|
|
}
|
|
return SASS_MEMORY_NEW(String_Quoted, pstate, result);
|
|
}
|
|
|
|
///////////////////
|
|
// STRING FUNCTIONS
|
|
///////////////////
|
|
|
|
Signature unquote_sig = "unquote($string)";
|
|
BUILT_IN(sass_unquote)
|
|
{
|
|
AST_Node_Obj arg = env["$string"];
|
|
if (String_Quoted_Ptr string_quoted = Cast<String_Quoted>(arg)) {
|
|
String_Constant_Ptr result = SASS_MEMORY_NEW(String_Constant, pstate, string_quoted->value());
|
|
// remember if the string was quoted (color tokens)
|
|
result->is_delayed(true); // delay colors
|
|
return result;
|
|
}
|
|
else if (String_Constant_Ptr str = Cast<String_Constant>(arg)) {
|
|
return str;
|
|
}
|
|
else if (Expression_Ptr ex = Cast<Expression>(arg)) {
|
|
Sass_Output_Style oldstyle = ctx.c_options.output_style;
|
|
ctx.c_options.output_style = SASS_STYLE_NESTED;
|
|
std::string val(arg->to_string(ctx.c_options));
|
|
val = Cast<Null>(arg) ? "null" : val;
|
|
ctx.c_options.output_style = oldstyle;
|
|
|
|
deprecated_function("Passing " + val + ", a non-string value, to unquote()", pstate);
|
|
return ex;
|
|
}
|
|
throw std::runtime_error("Invalid Data Type for unquote");
|
|
}
|
|
|
|
Signature quote_sig = "quote($string)";
|
|
BUILT_IN(sass_quote)
|
|
{
|
|
AST_Node_Obj arg = env["$string"];
|
|
// only set quote mark to true if already a string
|
|
if (String_Quoted_Ptr qstr = Cast<String_Quoted>(arg)) {
|
|
qstr->quote_mark('*');
|
|
return qstr;
|
|
}
|
|
// all other nodes must be converted to a string node
|
|
std::string str(quote(arg->to_string(ctx.c_options), String_Constant::double_quote()));
|
|
String_Quoted_Ptr result = SASS_MEMORY_NEW(String_Quoted, pstate, str);
|
|
result->quote_mark('*');
|
|
return result;
|
|
}
|
|
|
|
|
|
Signature str_length_sig = "str-length($string)";
|
|
BUILT_IN(str_length)
|
|
{
|
|
size_t len = std::string::npos;
|
|
try {
|
|
String_Constant_Ptr s = ARG("$string", String_Constant);
|
|
len = UTF_8::code_point_count(s->value(), 0, s->value().size());
|
|
|
|
}
|
|
// handle any invalid utf8 errors
|
|
// other errors will be re-thrown
|
|
catch (...) { handle_utf8_error(pstate, traces); }
|
|
// return something even if we had an error (-1)
|
|
return SASS_MEMORY_NEW(Number, pstate, (double)len);
|
|
}
|
|
|
|
Signature str_insert_sig = "str-insert($string, $insert, $index)";
|
|
BUILT_IN(str_insert)
|
|
{
|
|
std::string str;
|
|
try {
|
|
String_Constant_Ptr s = ARG("$string", String_Constant);
|
|
str = s->value();
|
|
str = unquote(str);
|
|
String_Constant_Ptr i = ARG("$insert", String_Constant);
|
|
std::string ins = i->value();
|
|
ins = unquote(ins);
|
|
double index = ARGVAL("$index");
|
|
size_t len = UTF_8::code_point_count(str, 0, str.size());
|
|
|
|
if (index > 0 && index <= len) {
|
|
// positive and within string length
|
|
str.insert(UTF_8::offset_at_position(str, static_cast<size_t>(index) - 1), ins);
|
|
}
|
|
else if (index > len) {
|
|
// positive and past string length
|
|
str += ins;
|
|
}
|
|
else if (index == 0) {
|
|
str = ins + str;
|
|
}
|
|
else if (std::abs(index) <= len) {
|
|
// negative and within string length
|
|
index += len + 1;
|
|
str.insert(UTF_8::offset_at_position(str, static_cast<size_t>(index)), ins);
|
|
}
|
|
else {
|
|
// negative and past string length
|
|
str = ins + str;
|
|
}
|
|
|
|
if (String_Quoted_Ptr ss = Cast<String_Quoted>(s)) {
|
|
if (ss->quote_mark()) str = quote(str);
|
|
}
|
|
}
|
|
// handle any invalid utf8 errors
|
|
// other errors will be re-thrown
|
|
catch (...) { handle_utf8_error(pstate, traces); }
|
|
return SASS_MEMORY_NEW(String_Quoted, pstate, str);
|
|
}
|
|
|
|
Signature str_index_sig = "str-index($string, $substring)";
|
|
BUILT_IN(str_index)
|
|
{
|
|
size_t index = std::string::npos;
|
|
try {
|
|
String_Constant_Ptr s = ARG("$string", String_Constant);
|
|
String_Constant_Ptr t = ARG("$substring", String_Constant);
|
|
std::string str = s->value();
|
|
str = unquote(str);
|
|
std::string substr = t->value();
|
|
substr = unquote(substr);
|
|
|
|
size_t c_index = str.find(substr);
|
|
if(c_index == std::string::npos) {
|
|
return SASS_MEMORY_NEW(Null, pstate);
|
|
}
|
|
index = UTF_8::code_point_count(str, 0, c_index) + 1;
|
|
}
|
|
// handle any invalid utf8 errors
|
|
// other errors will be re-thrown
|
|
catch (...) { handle_utf8_error(pstate, traces); }
|
|
// return something even if we had an error (-1)
|
|
return SASS_MEMORY_NEW(Number, pstate, (double)index);
|
|
}
|
|
|
|
Signature str_slice_sig = "str-slice($string, $start-at, $end-at:-1)";
|
|
BUILT_IN(str_slice)
|
|
{
|
|
std::string newstr;
|
|
try {
|
|
String_Constant_Ptr s = ARG("$string", String_Constant);
|
|
double start_at = ARGVAL("$start-at");
|
|
double end_at = ARGVAL("$end-at");
|
|
String_Quoted_Ptr ss = Cast<String_Quoted>(s);
|
|
|
|
std::string str = unquote(s->value());
|
|
|
|
size_t size = utf8::distance(str.begin(), str.end());
|
|
|
|
if (!Cast<Number>(env["$end-at"])) {
|
|
end_at = -1;
|
|
}
|
|
|
|
if (end_at == 0 || (end_at + size) < 0) {
|
|
if (ss && ss->quote_mark()) newstr = quote("");
|
|
return SASS_MEMORY_NEW(String_Quoted, pstate, newstr);
|
|
}
|
|
|
|
if (end_at < 0) {
|
|
end_at += size + 1;
|
|
if (end_at == 0) end_at = 1;
|
|
}
|
|
if (end_at > size) { end_at = (double)size; }
|
|
if (start_at < 0) {
|
|
start_at += size + 1;
|
|
if (start_at < 0) start_at = 0;
|
|
}
|
|
else if (start_at == 0) { ++ start_at; }
|
|
|
|
if (start_at <= end_at)
|
|
{
|
|
std::string::iterator start = str.begin();
|
|
utf8::advance(start, start_at - 1, str.end());
|
|
std::string::iterator end = start;
|
|
utf8::advance(end, end_at - start_at + 1, str.end());
|
|
newstr = std::string(start, end);
|
|
}
|
|
if (ss) {
|
|
if(ss->quote_mark()) newstr = quote(newstr);
|
|
}
|
|
}
|
|
// handle any invalid utf8 errors
|
|
// other errors will be re-thrown
|
|
catch (...) { handle_utf8_error(pstate, traces); }
|
|
return SASS_MEMORY_NEW(String_Quoted, pstate, newstr);
|
|
}
|
|
|
|
Signature to_upper_case_sig = "to-upper-case($string)";
|
|
BUILT_IN(to_upper_case)
|
|
{
|
|
String_Constant_Ptr s = ARG("$string", String_Constant);
|
|
std::string str = s->value();
|
|
|
|
for (size_t i = 0, L = str.length(); i < L; ++i) {
|
|
if (Sass::Util::isAscii(str[i])) {
|
|
str[i] = std::toupper(str[i]);
|
|
}
|
|
}
|
|
|
|
if (String_Quoted_Ptr ss = Cast<String_Quoted>(s)) {
|
|
String_Quoted_Ptr cpy = SASS_MEMORY_COPY(ss);
|
|
cpy->value(str);
|
|
return cpy;
|
|
} else {
|
|
return SASS_MEMORY_NEW(String_Quoted, pstate, str);
|
|
}
|
|
}
|
|
|
|
Signature to_lower_case_sig = "to-lower-case($string)";
|
|
BUILT_IN(to_lower_case)
|
|
{
|
|
String_Constant_Ptr s = ARG("$string", String_Constant);
|
|
std::string str = s->value();
|
|
|
|
for (size_t i = 0, L = str.length(); i < L; ++i) {
|
|
if (Sass::Util::isAscii(str[i])) {
|
|
str[i] = std::tolower(str[i]);
|
|
}
|
|
}
|
|
|
|
if (String_Quoted_Ptr ss = Cast<String_Quoted>(s)) {
|
|
String_Quoted_Ptr cpy = SASS_MEMORY_COPY(ss);
|
|
cpy->value(str);
|
|
return cpy;
|
|
} else {
|
|
return SASS_MEMORY_NEW(String_Quoted, pstate, str);
|
|
}
|
|
}
|
|
|
|
///////////////////
|
|
// NUMBER FUNCTIONS
|
|
///////////////////
|
|
|
|
Signature percentage_sig = "percentage($number)";
|
|
BUILT_IN(percentage)
|
|
{
|
|
Number_Obj n = ARGN("$number");
|
|
if (!n->is_unitless()) error("argument $number of `" + std::string(sig) + "` must be unitless", pstate, traces);
|
|
return SASS_MEMORY_NEW(Number, pstate, n->value() * 100, "%");
|
|
}
|
|
|
|
Signature round_sig = "round($number)";
|
|
BUILT_IN(round)
|
|
{
|
|
Number_Obj r = ARGN("$number");
|
|
r->value(Sass::round(r->value(), ctx.c_options.precision));
|
|
r->pstate(pstate);
|
|
return r.detach();
|
|
}
|
|
|
|
Signature ceil_sig = "ceil($number)";
|
|
BUILT_IN(ceil)
|
|
{
|
|
Number_Obj r = ARGN("$number");
|
|
r->value(std::ceil(r->value()));
|
|
r->pstate(pstate);
|
|
return r.detach();
|
|
}
|
|
|
|
Signature floor_sig = "floor($number)";
|
|
BUILT_IN(floor)
|
|
{
|
|
Number_Obj r = ARGN("$number");
|
|
r->value(std::floor(r->value()));
|
|
r->pstate(pstate);
|
|
return r.detach();
|
|
}
|
|
|
|
Signature abs_sig = "abs($number)";
|
|
BUILT_IN(abs)
|
|
{
|
|
Number_Obj r = ARGN("$number");
|
|
r->value(std::abs(r->value()));
|
|
r->pstate(pstate);
|
|
return r.detach();
|
|
}
|
|
|
|
Signature min_sig = "min($numbers...)";
|
|
BUILT_IN(min)
|
|
{
|
|
List_Ptr arglist = ARG("$numbers", List);
|
|
Number_Obj least = NULL;
|
|
for (size_t i = 0, L = arglist->length(); i < L; ++i) {
|
|
Expression_Obj val = arglist->value_at_index(i);
|
|
Number_Obj xi = Cast<Number>(val);
|
|
if (!xi) {
|
|
error("\"" + val->to_string(ctx.c_options) + "\" is not a number for `min'", pstate, traces);
|
|
}
|
|
if (least) {
|
|
if (*xi < *least) least = xi;
|
|
} else least = xi;
|
|
}
|
|
return least.detach();
|
|
}
|
|
|
|
Signature max_sig = "max($numbers...)";
|
|
BUILT_IN(max)
|
|
{
|
|
List_Ptr arglist = ARG("$numbers", List);
|
|
Number_Obj greatest = NULL;
|
|
for (size_t i = 0, L = arglist->length(); i < L; ++i) {
|
|
Expression_Obj val = arglist->value_at_index(i);
|
|
Number_Obj xi = Cast<Number>(val);
|
|
if (!xi) {
|
|
error("\"" + val->to_string(ctx.c_options) + "\" is not a number for `max'", pstate, traces);
|
|
}
|
|
if (greatest) {
|
|
if (*greatest < *xi) greatest = xi;
|
|
} else greatest = xi;
|
|
}
|
|
return greatest.detach();
|
|
}
|
|
|
|
Signature random_sig = "random($limit:false)";
|
|
BUILT_IN(random)
|
|
{
|
|
AST_Node_Obj arg = env["$limit"];
|
|
Value_Ptr v = Cast<Value>(arg);
|
|
Number_Ptr l = Cast<Number>(arg);
|
|
Boolean_Ptr b = Cast<Boolean>(arg);
|
|
if (l) {
|
|
double lv = l->value();
|
|
if (lv < 1) {
|
|
stringstream err;
|
|
err << "$limit " << lv << " must be greater than or equal to 1 for `random'";
|
|
error(err.str(), pstate, traces);
|
|
}
|
|
bool eq_int = std::fabs(trunc(lv) - lv) < NUMBER_EPSILON;
|
|
if (!eq_int) {
|
|
stringstream err;
|
|
err << "Expected $limit to be an integer but got " << lv << " for `random'";
|
|
error(err.str(), pstate, traces);
|
|
}
|
|
std::uniform_real_distribution<> distributor(1, lv + 1);
|
|
uint_fast32_t distributed = static_cast<uint_fast32_t>(distributor(rand));
|
|
return SASS_MEMORY_NEW(Number, pstate, (double)distributed);
|
|
}
|
|
else if (b) {
|
|
std::uniform_real_distribution<> distributor(0, 1);
|
|
double distributed = static_cast<double>(distributor(rand));
|
|
return SASS_MEMORY_NEW(Number, pstate, distributed);
|
|
} else if (v) {
|
|
traces.push_back(Backtrace(pstate));
|
|
throw Exception::InvalidArgumentType(pstate, traces, "random", "$limit", "number", v);
|
|
} else {
|
|
traces.push_back(Backtrace(pstate));
|
|
throw Exception::InvalidArgumentType(pstate, traces, "random", "$limit", "number");
|
|
}
|
|
}
|
|
|
|
/////////////////
|
|
// LIST FUNCTIONS
|
|
/////////////////
|
|
|
|
Signature length_sig = "length($list)";
|
|
BUILT_IN(length)
|
|
{
|
|
if (Selector_List_Ptr sl = Cast<Selector_List>(env["$list"])) {
|
|
return SASS_MEMORY_NEW(Number, pstate, (double)sl->length());
|
|
}
|
|
Expression_Ptr v = ARG("$list", Expression);
|
|
if (v->concrete_type() == Expression::MAP) {
|
|
Map_Ptr map = Cast<Map>(env["$list"]);
|
|
return SASS_MEMORY_NEW(Number, pstate, (double)(map ? map->length() : 1));
|
|
}
|
|
if (v->concrete_type() == Expression::SELECTOR) {
|
|
if (Compound_Selector_Ptr h = Cast<Compound_Selector>(v)) {
|
|
return SASS_MEMORY_NEW(Number, pstate, (double)h->length());
|
|
} else if (Selector_List_Ptr ls = Cast<Selector_List>(v)) {
|
|
return SASS_MEMORY_NEW(Number, pstate, (double)ls->length());
|
|
} else {
|
|
return SASS_MEMORY_NEW(Number, pstate, 1);
|
|
}
|
|
}
|
|
|
|
List_Ptr list = Cast<List>(env["$list"]);
|
|
return SASS_MEMORY_NEW(Number,
|
|
pstate,
|
|
(double)(list ? list->size() : 1));
|
|
}
|
|
|
|
Signature nth_sig = "nth($list, $n)";
|
|
BUILT_IN(nth)
|
|
{
|
|
double nr = ARGVAL("$n");
|
|
Map_Ptr m = Cast<Map>(env["$list"]);
|
|
if (Selector_List_Ptr sl = Cast<Selector_List>(env["$list"])) {
|
|
size_t len = m ? m->length() : sl->length();
|
|
bool empty = m ? m->empty() : sl->empty();
|
|
if (empty) error("argument `$list` of `" + std::string(sig) + "` must not be empty", pstate, traces);
|
|
double index = std::floor(nr < 0 ? len + nr : nr - 1);
|
|
if (index < 0 || index > len - 1) error("index out of bounds for `" + std::string(sig) + "`", pstate, traces);
|
|
// return (*sl)[static_cast<int>(index)];
|
|
Listize listize;
|
|
return (*sl)[static_cast<int>(index)]->perform(&listize);
|
|
}
|
|
List_Obj l = Cast<List>(env["$list"]);
|
|
if (nr == 0) error("argument `$n` of `" + std::string(sig) + "` must be non-zero", pstate, traces);
|
|
// if the argument isn't a list, then wrap it in a singleton list
|
|
if (!m && !l) {
|
|
l = SASS_MEMORY_NEW(List, pstate, 1);
|
|
l->append(ARG("$list", Expression));
|
|
}
|
|
size_t len = m ? m->length() : l->length();
|
|
bool empty = m ? m->empty() : l->empty();
|
|
if (empty) error("argument `$list` of `" + std::string(sig) + "` must not be empty", pstate, traces);
|
|
double index = std::floor(nr < 0 ? len + nr : nr - 1);
|
|
if (index < 0 || index > len - 1) error("index out of bounds for `" + std::string(sig) + "`", pstate, traces);
|
|
|
|
if (m) {
|
|
l = SASS_MEMORY_NEW(List, pstate, 1);
|
|
l->append(m->keys()[static_cast<unsigned int>(index)]);
|
|
l->append(m->at(m->keys()[static_cast<unsigned int>(index)]));
|
|
return l.detach();
|
|
}
|
|
else {
|
|
Expression_Obj rv = l->value_at_index(static_cast<int>(index));
|
|
rv->set_delayed(false);
|
|
return rv.detach();
|
|
}
|
|
}
|
|
|
|
Signature set_nth_sig = "set-nth($list, $n, $value)";
|
|
BUILT_IN(set_nth)
|
|
{
|
|
Map_Obj m = Cast<Map>(env["$list"]);
|
|
List_Obj l = Cast<List>(env["$list"]);
|
|
Number_Obj n = ARG("$n", Number);
|
|
Expression_Obj v = ARG("$value", Expression);
|
|
if (!l) {
|
|
l = SASS_MEMORY_NEW(List, pstate, 1);
|
|
l->append(ARG("$list", Expression));
|
|
}
|
|
if (m) {
|
|
l = m->to_list(pstate);
|
|
}
|
|
if (l->empty()) error("argument `$list` of `" + std::string(sig) + "` must not be empty", pstate, traces);
|
|
double index = std::floor(n->value() < 0 ? l->length() + n->value() : n->value() - 1);
|
|
if (index < 0 || index > l->length() - 1) error("index out of bounds for `" + std::string(sig) + "`", pstate, traces);
|
|
List_Ptr result = SASS_MEMORY_NEW(List, pstate, l->length(), l->separator(), false, l->is_bracketed());
|
|
for (size_t i = 0, L = l->length(); i < L; ++i) {
|
|
result->append(((i == index) ? v : (*l)[i]));
|
|
}
|
|
return result;
|
|
}
|
|
|
|
Signature index_sig = "index($list, $value)";
|
|
BUILT_IN(index)
|
|
{
|
|
Map_Obj m = Cast<Map>(env["$list"]);
|
|
List_Obj l = Cast<List>(env["$list"]);
|
|
Expression_Obj v = ARG("$value", Expression);
|
|
if (!l) {
|
|
l = SASS_MEMORY_NEW(List, pstate, 1);
|
|
l->append(ARG("$list", Expression));
|
|
}
|
|
if (m) {
|
|
l = m->to_list(pstate);
|
|
}
|
|
for (size_t i = 0, L = l->length(); i < L; ++i) {
|
|
if (Operators::eq(l->value_at_index(i), v)) return SASS_MEMORY_NEW(Number, pstate, (double)(i+1));
|
|
}
|
|
return SASS_MEMORY_NEW(Null, pstate);
|
|
}
|
|
|
|
Signature join_sig = "join($list1, $list2, $separator: auto, $bracketed: auto)";
|
|
BUILT_IN(join)
|
|
{
|
|
Map_Obj m1 = Cast<Map>(env["$list1"]);
|
|
Map_Obj m2 = Cast<Map>(env["$list2"]);
|
|
List_Obj l1 = Cast<List>(env["$list1"]);
|
|
List_Obj l2 = Cast<List>(env["$list2"]);
|
|
String_Constant_Obj sep = ARG("$separator", String_Constant);
|
|
enum Sass_Separator sep_val = (l1 ? l1->separator() : SASS_SPACE);
|
|
Value* bracketed = ARG("$bracketed", Value);
|
|
bool is_bracketed = (l1 ? l1->is_bracketed() : false);
|
|
if (!l1) {
|
|
l1 = SASS_MEMORY_NEW(List, pstate, 1);
|
|
l1->append(ARG("$list1", Expression));
|
|
sep_val = (l2 ? l2->separator() : SASS_SPACE);
|
|
is_bracketed = (l2 ? l2->is_bracketed() : false);
|
|
}
|
|
if (!l2) {
|
|
l2 = SASS_MEMORY_NEW(List, pstate, 1);
|
|
l2->append(ARG("$list2", Expression));
|
|
}
|
|
if (m1) {
|
|
l1 = m1->to_list(pstate);
|
|
sep_val = SASS_COMMA;
|
|
}
|
|
if (m2) {
|
|
l2 = m2->to_list(pstate);
|
|
}
|
|
size_t len = l1->length() + l2->length();
|
|
std::string sep_str = unquote(sep->value());
|
|
if (sep_str == "space") sep_val = SASS_SPACE;
|
|
else if (sep_str == "comma") sep_val = SASS_COMMA;
|
|
else if (sep_str != "auto") error("argument `$separator` of `" + std::string(sig) + "` must be `space`, `comma`, or `auto`", pstate, traces);
|
|
String_Constant_Obj bracketed_as_str = Cast<String_Constant>(bracketed);
|
|
bool bracketed_is_auto = bracketed_as_str && unquote(bracketed_as_str->value()) == "auto";
|
|
if (!bracketed_is_auto) {
|
|
is_bracketed = !bracketed->is_false();
|
|
}
|
|
List_Obj result = SASS_MEMORY_NEW(List, pstate, len, sep_val, false, is_bracketed);
|
|
result->concat(l1);
|
|
result->concat(l2);
|
|
return result.detach();
|
|
}
|
|
|
|
Signature append_sig = "append($list, $val, $separator: auto)";
|
|
BUILT_IN(append)
|
|
{
|
|
Map_Obj m = Cast<Map>(env["$list"]);
|
|
List_Obj l = Cast<List>(env["$list"]);
|
|
Expression_Obj v = ARG("$val", Expression);
|
|
if (Selector_List_Ptr sl = Cast<Selector_List>(env["$list"])) {
|
|
Listize listize;
|
|
l = Cast<List>(sl->perform(&listize));
|
|
}
|
|
String_Constant_Obj sep = ARG("$separator", String_Constant);
|
|
if (!l) {
|
|
l = SASS_MEMORY_NEW(List, pstate, 1);
|
|
l->append(ARG("$list", Expression));
|
|
}
|
|
if (m) {
|
|
l = m->to_list(pstate);
|
|
}
|
|
List_Ptr result = SASS_MEMORY_COPY(l);
|
|
std::string sep_str(unquote(sep->value()));
|
|
if (sep_str != "auto") { // check default first
|
|
if (sep_str == "space") result->separator(SASS_SPACE);
|
|
else if (sep_str == "comma") result->separator(SASS_COMMA);
|
|
else error("argument `$separator` of `" + std::string(sig) + "` must be `space`, `comma`, or `auto`", pstate, traces);
|
|
}
|
|
if (l->is_arglist()) {
|
|
result->append(SASS_MEMORY_NEW(Argument,
|
|
v->pstate(),
|
|
v,
|
|
"",
|
|
false,
|
|
false));
|
|
|
|
} else {
|
|
result->append(v);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
Signature zip_sig = "zip($lists...)";
|
|
BUILT_IN(zip)
|
|
{
|
|
List_Obj arglist = SASS_MEMORY_COPY(ARG("$lists", List));
|
|
size_t shortest = 0;
|
|
for (size_t i = 0, L = arglist->length(); i < L; ++i) {
|
|
List_Obj ith = Cast<List>(arglist->value_at_index(i));
|
|
Map_Obj mith = Cast<Map>(arglist->value_at_index(i));
|
|
if (!ith) {
|
|
if (mith) {
|
|
ith = mith->to_list(pstate);
|
|
} else {
|
|
ith = SASS_MEMORY_NEW(List, pstate, 1);
|
|
ith->append(arglist->value_at_index(i));
|
|
}
|
|
if (arglist->is_arglist()) {
|
|
Argument_Obj arg = (Argument_Ptr)(arglist->at(i).ptr()); // XXX
|
|
arg->value(ith);
|
|
} else {
|
|
(*arglist)[i] = ith;
|
|
}
|
|
}
|
|
shortest = (i ? std::min(shortest, ith->length()) : ith->length());
|
|
}
|
|
List_Ptr zippers = SASS_MEMORY_NEW(List, pstate, shortest, SASS_COMMA);
|
|
size_t L = arglist->length();
|
|
for (size_t i = 0; i < shortest; ++i) {
|
|
List_Ptr zipper = SASS_MEMORY_NEW(List, pstate, L);
|
|
for (size_t j = 0; j < L; ++j) {
|
|
zipper->append(Cast<List>(arglist->value_at_index(j))->at(i));
|
|
}
|
|
zippers->append(zipper);
|
|
}
|
|
return zippers;
|
|
}
|
|
|
|
Signature list_separator_sig = "list_separator($list)";
|
|
BUILT_IN(list_separator)
|
|
{
|
|
List_Obj l = Cast<List>(env["$list"]);
|
|
if (!l) {
|
|
l = SASS_MEMORY_NEW(List, pstate, 1);
|
|
l->append(ARG("$list", Expression));
|
|
}
|
|
return SASS_MEMORY_NEW(String_Quoted,
|
|
pstate,
|
|
l->separator() == SASS_COMMA ? "comma" : "space");
|
|
}
|
|
|
|
/////////////////
|
|
// MAP FUNCTIONS
|
|
/////////////////
|
|
|
|
Signature map_get_sig = "map-get($map, $key)";
|
|
BUILT_IN(map_get)
|
|
{
|
|
// leaks for "map-get((), foo)" if not Obj
|
|
// investigate why this is (unexpected)
|
|
Map_Obj m = ARGM("$map", Map, ctx);
|
|
Expression_Obj v = ARG("$key", Expression);
|
|
try {
|
|
Expression_Obj val = m->at(v);
|
|
if (!val) return SASS_MEMORY_NEW(Null, pstate);
|
|
val->set_delayed(false);
|
|
return val.detach();
|
|
} catch (const std::out_of_range&) {
|
|
return SASS_MEMORY_NEW(Null, pstate);
|
|
}
|
|
catch (...) { throw; }
|
|
}
|
|
|
|
Signature map_has_key_sig = "map-has-key($map, $key)";
|
|
BUILT_IN(map_has_key)
|
|
{
|
|
Map_Obj m = ARGM("$map", Map, ctx);
|
|
Expression_Obj v = ARG("$key", Expression);
|
|
return SASS_MEMORY_NEW(Boolean, pstate, m->has(v));
|
|
}
|
|
|
|
Signature map_keys_sig = "map-keys($map)";
|
|
BUILT_IN(map_keys)
|
|
{
|
|
Map_Obj m = ARGM("$map", Map, ctx);
|
|
List_Ptr result = SASS_MEMORY_NEW(List, pstate, m->length(), SASS_COMMA);
|
|
for ( auto key : m->keys()) {
|
|
result->append(key);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
Signature map_values_sig = "map-values($map)";
|
|
BUILT_IN(map_values)
|
|
{
|
|
Map_Obj m = ARGM("$map", Map, ctx);
|
|
List_Ptr result = SASS_MEMORY_NEW(List, pstate, m->length(), SASS_COMMA);
|
|
for ( auto key : m->keys()) {
|
|
result->append(m->at(key));
|
|
}
|
|
return result;
|
|
}
|
|
|
|
Signature map_merge_sig = "map-merge($map1, $map2)";
|
|
BUILT_IN(map_merge)
|
|
{
|
|
Map_Obj m1 = ARGM("$map1", Map, ctx);
|
|
Map_Obj m2 = ARGM("$map2", Map, ctx);
|
|
|
|
size_t len = m1->length() + m2->length();
|
|
Map_Ptr result = SASS_MEMORY_NEW(Map, pstate, len);
|
|
// concat not implemented for maps
|
|
*result += m1;
|
|
*result += m2;
|
|
return result;
|
|
}
|
|
|
|
Signature map_remove_sig = "map-remove($map, $keys...)";
|
|
BUILT_IN(map_remove)
|
|
{
|
|
bool remove;
|
|
Map_Obj m = ARGM("$map", Map, ctx);
|
|
List_Obj arglist = ARG("$keys", List);
|
|
Map_Ptr result = SASS_MEMORY_NEW(Map, pstate, 1);
|
|
for (auto key : m->keys()) {
|
|
remove = false;
|
|
for (size_t j = 0, K = arglist->length(); j < K && !remove; ++j) {
|
|
remove = Operators::eq(key, arglist->value_at_index(j));
|
|
}
|
|
if (!remove) *result << std::make_pair(key, m->at(key));
|
|
}
|
|
return result;
|
|
}
|
|
|
|
Signature keywords_sig = "keywords($args)";
|
|
BUILT_IN(keywords)
|
|
{
|
|
List_Obj arglist = SASS_MEMORY_COPY(ARG("$args", List)); // copy
|
|
Map_Obj result = SASS_MEMORY_NEW(Map, pstate, 1);
|
|
for (size_t i = arglist->size(), L = arglist->length(); i < L; ++i) {
|
|
Expression_Obj obj = arglist->at(i);
|
|
Argument_Obj arg = (Argument_Ptr) obj.ptr(); // XXX
|
|
std::string name = std::string(arg->name());
|
|
name = name.erase(0, 1); // sanitize name (remove dollar sign)
|
|
*result << std::make_pair(SASS_MEMORY_NEW(String_Quoted,
|
|
pstate, name),
|
|
arg->value());
|
|
}
|
|
return result.detach();
|
|
}
|
|
|
|
//////////////////////////
|
|
// INTROSPECTION FUNCTIONS
|
|
//////////////////////////
|
|
|
|
Signature type_of_sig = "type-of($value)";
|
|
BUILT_IN(type_of)
|
|
{
|
|
Expression_Ptr v = ARG("$value", Expression);
|
|
return SASS_MEMORY_NEW(String_Quoted, pstate, v->type());
|
|
}
|
|
|
|
Signature unit_sig = "unit($number)";
|
|
BUILT_IN(unit)
|
|
{
|
|
Number_Obj arg = ARGN("$number");
|
|
std::string str(quote(arg->unit(), '"'));
|
|
return SASS_MEMORY_NEW(String_Quoted, pstate, str);
|
|
}
|
|
|
|
Signature unitless_sig = "unitless($number)";
|
|
BUILT_IN(unitless)
|
|
{
|
|
Number_Obj arg = ARGN("$number");
|
|
bool unitless = arg->is_unitless();
|
|
return SASS_MEMORY_NEW(Boolean, pstate, unitless);
|
|
}
|
|
|
|
Signature comparable_sig = "comparable($number-1, $number-2)";
|
|
BUILT_IN(comparable)
|
|
{
|
|
Number_Obj n1 = ARGN("$number-1");
|
|
Number_Obj n2 = ARGN("$number-2");
|
|
if (n1->is_unitless() || n2->is_unitless()) {
|
|
return SASS_MEMORY_NEW(Boolean, pstate, true);
|
|
}
|
|
// normalize into main units
|
|
n1->normalize(); n2->normalize();
|
|
Units &lhs_unit = *n1, &rhs_unit = *n2;
|
|
bool is_comparable = (lhs_unit == rhs_unit);
|
|
return SASS_MEMORY_NEW(Boolean, pstate, is_comparable);
|
|
}
|
|
|
|
Signature variable_exists_sig = "variable-exists($name)";
|
|
BUILT_IN(variable_exists)
|
|
{
|
|
std::string s = Util::normalize_underscores(unquote(ARG("$name", String_Constant)->value()));
|
|
|
|
if(d_env.has("$"+s)) {
|
|
return SASS_MEMORY_NEW(Boolean, pstate, true);
|
|
}
|
|
else {
|
|
return SASS_MEMORY_NEW(Boolean, pstate, false);
|
|
}
|
|
}
|
|
|
|
Signature global_variable_exists_sig = "global-variable-exists($name)";
|
|
BUILT_IN(global_variable_exists)
|
|
{
|
|
std::string s = Util::normalize_underscores(unquote(ARG("$name", String_Constant)->value()));
|
|
|
|
if(d_env.has_global("$"+s)) {
|
|
return SASS_MEMORY_NEW(Boolean, pstate, true);
|
|
}
|
|
else {
|
|
return SASS_MEMORY_NEW(Boolean, pstate, false);
|
|
}
|
|
}
|
|
|
|
Signature function_exists_sig = "function-exists($name)";
|
|
BUILT_IN(function_exists)
|
|
{
|
|
String_Constant_Ptr ss = Cast<String_Constant>(env["$name"]);
|
|
if (!ss) {
|
|
error("$name: " + (env["$name"]->to_string()) + " is not a string for `function-exists'", pstate, traces);
|
|
}
|
|
|
|
std::string name = Util::normalize_underscores(unquote(ss->value()));
|
|
|
|
if(d_env.has_global(name+"[f]")) {
|
|
return SASS_MEMORY_NEW(Boolean, pstate, true);
|
|
}
|
|
else {
|
|
return SASS_MEMORY_NEW(Boolean, pstate, false);
|
|
}
|
|
}
|
|
|
|
Signature mixin_exists_sig = "mixin-exists($name)";
|
|
BUILT_IN(mixin_exists)
|
|
{
|
|
std::string s = Util::normalize_underscores(unquote(ARG("$name", String_Constant)->value()));
|
|
|
|
if(d_env.has_global(s+"[m]")) {
|
|
return SASS_MEMORY_NEW(Boolean, pstate, true);
|
|
}
|
|
else {
|
|
return SASS_MEMORY_NEW(Boolean, pstate, false);
|
|
}
|
|
}
|
|
|
|
Signature feature_exists_sig = "feature-exists($name)";
|
|
BUILT_IN(feature_exists)
|
|
{
|
|
std::string s = unquote(ARG("$name", String_Constant)->value());
|
|
|
|
if(features.find(s) == features.end()) {
|
|
return SASS_MEMORY_NEW(Boolean, pstate, false);
|
|
}
|
|
else {
|
|
return SASS_MEMORY_NEW(Boolean, pstate, true);
|
|
}
|
|
}
|
|
|
|
Signature call_sig = "call($name, $args...)";
|
|
BUILT_IN(call)
|
|
{
|
|
std::string name;
|
|
Function_Ptr ff = Cast<Function>(env["$name"]);
|
|
String_Constant_Ptr ss = Cast<String_Constant>(env["$name"]);
|
|
|
|
if (ss) {
|
|
name = Util::normalize_underscores(unquote(ss->value()));
|
|
std::cerr << "DEPRECATION WARNING: ";
|
|
std::cerr << "Passing a string to call() is deprecated and will be illegal" << std::endl;
|
|
std::cerr << "in Sass 4.0. Use call(get-function(" + quote(name) + ")) instead." << std::endl;
|
|
std::cerr << std::endl;
|
|
} else if (ff) {
|
|
name = ff->name();
|
|
}
|
|
|
|
List_Obj arglist = SASS_MEMORY_COPY(ARG("$args", List));
|
|
|
|
Arguments_Obj args = SASS_MEMORY_NEW(Arguments, pstate);
|
|
// std::string full_name(name + "[f]");
|
|
// Definition_Ptr def = d_env.has(full_name) ? Cast<Definition>((d_env)[full_name]) : 0;
|
|
// Parameters_Ptr params = def ? def->parameters() : 0;
|
|
// size_t param_size = params ? params->length() : 0;
|
|
for (size_t i = 0, L = arglist->length(); i < L; ++i) {
|
|
Expression_Obj expr = arglist->value_at_index(i);
|
|
// if (params && params->has_rest_parameter()) {
|
|
// Parameter_Obj p = param_size > i ? (*params)[i] : 0;
|
|
// List_Ptr list = Cast<List>(expr);
|
|
// if (list && p && !p->is_rest_parameter()) expr = (*list)[0];
|
|
// }
|
|
if (arglist->is_arglist()) {
|
|
Expression_Obj obj = arglist->at(i);
|
|
Argument_Obj arg = (Argument_Ptr) obj.ptr(); // XXX
|
|
args->append(SASS_MEMORY_NEW(Argument,
|
|
pstate,
|
|
expr,
|
|
arg ? arg->name() : "",
|
|
arg ? arg->is_rest_argument() : false,
|
|
arg ? arg->is_keyword_argument() : false));
|
|
} else {
|
|
args->append(SASS_MEMORY_NEW(Argument, pstate, expr));
|
|
}
|
|
}
|
|
Function_Call_Obj func = SASS_MEMORY_NEW(Function_Call, pstate, name, args);
|
|
Expand expand(ctx, &d_env, &selector_stack);
|
|
func->via_call(true); // calc invoke is allowed
|
|
if (ff) func->func(ff);
|
|
return func->perform(&expand.eval);
|
|
}
|
|
|
|
////////////////////
|
|
// BOOLEAN FUNCTIONS
|
|
////////////////////
|
|
|
|
Signature not_sig = "not($value)";
|
|
BUILT_IN(sass_not)
|
|
{
|
|
return SASS_MEMORY_NEW(Boolean, pstate, ARG("$value", Expression)->is_false());
|
|
}
|
|
|
|
Signature if_sig = "if($condition, $if-true, $if-false)";
|
|
// BUILT_IN(sass_if)
|
|
// { return ARG("$condition", Expression)->is_false() ? ARG("$if-false", Expression) : ARG("$if-true", Expression); }
|
|
BUILT_IN(sass_if)
|
|
{
|
|
Expand expand(ctx, &d_env, &selector_stack);
|
|
Expression_Obj cond = ARG("$condition", Expression)->perform(&expand.eval);
|
|
bool is_true = !cond->is_false();
|
|
Expression_Obj res = ARG(is_true ? "$if-true" : "$if-false", Expression);
|
|
res = res->perform(&expand.eval);
|
|
res->set_delayed(false); // clone?
|
|
return res.detach();
|
|
}
|
|
|
|
//////////////////////////
|
|
// MISCELLANEOUS FUNCTIONS
|
|
//////////////////////////
|
|
|
|
// value.check_deprecated_interp if value.is_a?(Sass::Script::Value::String)
|
|
// unquoted_string(value.to_sass)
|
|
|
|
Signature inspect_sig = "inspect($value)";
|
|
BUILT_IN(inspect)
|
|
{
|
|
Expression_Ptr v = ARG("$value", Expression);
|
|
if (v->concrete_type() == Expression::NULL_VAL) {
|
|
return SASS_MEMORY_NEW(String_Quoted, pstate, "null");
|
|
} else if (v->concrete_type() == Expression::BOOLEAN && v->is_false()) {
|
|
return SASS_MEMORY_NEW(String_Quoted, pstate, "false");
|
|
} else if (v->concrete_type() == Expression::STRING) {
|
|
return v;
|
|
} else {
|
|
// ToDo: fix to_sass for nested parentheses
|
|
Sass_Output_Style old_style;
|
|
old_style = ctx.c_options.output_style;
|
|
ctx.c_options.output_style = TO_SASS;
|
|
Emitter emitter(ctx.c_options);
|
|
Inspect i(emitter);
|
|
i.in_declaration = false;
|
|
v->perform(&i);
|
|
ctx.c_options.output_style = old_style;
|
|
return SASS_MEMORY_NEW(String_Quoted, pstate, i.get_buffer());
|
|
}
|
|
// return v;
|
|
}
|
|
Signature selector_nest_sig = "selector-nest($selectors...)";
|
|
BUILT_IN(selector_nest)
|
|
{
|
|
List_Ptr arglist = ARG("$selectors", List);
|
|
|
|
// Not enough parameters
|
|
if( arglist->length() == 0 )
|
|
error("$selectors: At least one selector must be passed for `selector-nest'", pstate, traces);
|
|
|
|
// Parse args into vector of selectors
|
|
std::vector<Selector_List_Obj> parsedSelectors;
|
|
for (size_t i = 0, L = arglist->length(); i < L; ++i) {
|
|
Expression_Obj exp = Cast<Expression>(arglist->value_at_index(i));
|
|
if (exp->concrete_type() == Expression::NULL_VAL) {
|
|
std::stringstream msg;
|
|
msg << "$selectors: null is not a valid selector: it must be a string,\n";
|
|
msg << "a list of strings, or a list of lists of strings for 'selector-nest'";
|
|
error(msg.str(), pstate, traces);
|
|
}
|
|
if (String_Constant_Obj str = Cast<String_Constant>(exp)) {
|
|
str->quote_mark(0);
|
|
}
|
|
std::string exp_src = exp->to_string(ctx.c_options);
|
|
Selector_List_Obj sel = Parser::parse_selector(exp_src.c_str(), ctx, traces);
|
|
parsedSelectors.push_back(sel);
|
|
}
|
|
|
|
// Nothing to do
|
|
if( parsedSelectors.empty() ) {
|
|
return SASS_MEMORY_NEW(Null, pstate);
|
|
}
|
|
|
|
// Set the first element as the `result`, keep appending to as we go down the parsedSelector vector.
|
|
std::vector<Selector_List_Obj>::iterator itr = parsedSelectors.begin();
|
|
Selector_List_Obj result = *itr;
|
|
++itr;
|
|
|
|
for(;itr != parsedSelectors.end(); ++itr) {
|
|
Selector_List_Obj child = *itr;
|
|
std::vector<Complex_Selector_Obj> exploded;
|
|
selector_stack.push_back(result);
|
|
Selector_List_Obj rv = child->resolve_parent_refs(selector_stack, traces);
|
|
selector_stack.pop_back();
|
|
for (size_t m = 0, mLen = rv->length(); m < mLen; ++m) {
|
|
exploded.push_back((*rv)[m]);
|
|
}
|
|
result->elements(exploded);
|
|
}
|
|
|
|
Listize listize;
|
|
return result->perform(&listize);
|
|
}
|
|
|
|
Signature selector_append_sig = "selector-append($selectors...)";
|
|
BUILT_IN(selector_append)
|
|
{
|
|
List_Ptr arglist = ARG("$selectors", List);
|
|
|
|
// Not enough parameters
|
|
if( arglist->length() == 0 )
|
|
error("$selectors: At least one selector must be passed for `selector-append'", pstate, traces);
|
|
|
|
// Parse args into vector of selectors
|
|
std::vector<Selector_List_Obj> parsedSelectors;
|
|
for (size_t i = 0, L = arglist->length(); i < L; ++i) {
|
|
Expression_Obj exp = Cast<Expression>(arglist->value_at_index(i));
|
|
if (exp->concrete_type() == Expression::NULL_VAL) {
|
|
std::stringstream msg;
|
|
msg << "$selectors: null is not a valid selector: it must be a string,\n";
|
|
msg << "a list of strings, or a list of lists of strings for 'selector-append'";
|
|
error(msg.str(), pstate, traces);
|
|
}
|
|
if (String_Constant_Ptr str = Cast<String_Constant>(exp)) {
|
|
str->quote_mark(0);
|
|
}
|
|
std::string exp_src = exp->to_string();
|
|
Selector_List_Obj sel = Parser::parse_selector(exp_src.c_str(), ctx, traces);
|
|
parsedSelectors.push_back(sel);
|
|
}
|
|
|
|
// Nothing to do
|
|
if( parsedSelectors.empty() ) {
|
|
return SASS_MEMORY_NEW(Null, pstate);
|
|
}
|
|
|
|
// Set the first element as the `result`, keep appending to as we go down the parsedSelector vector.
|
|
std::vector<Selector_List_Obj>::iterator itr = parsedSelectors.begin();
|
|
Selector_List_Obj result = *itr;
|
|
++itr;
|
|
|
|
for(;itr != parsedSelectors.end(); ++itr) {
|
|
Selector_List_Obj child = *itr;
|
|
std::vector<Complex_Selector_Obj> newElements;
|
|
|
|
// For every COMPLEX_SELECTOR in `result`
|
|
// For every COMPLEX_SELECTOR in `child`
|
|
// let parentSeqClone equal a copy of result->elements[i]
|
|
// let childSeq equal child->elements[j]
|
|
// Append all of childSeq head elements into parentSeqClone
|
|
// Set the innermost tail of parentSeqClone, to childSeq's tail
|
|
// Replace result->elements with newElements
|
|
for (size_t i = 0, resultLen = result->length(); i < resultLen; ++i) {
|
|
for (size_t j = 0, childLen = child->length(); j < childLen; ++j) {
|
|
Complex_Selector_Obj parentSeqClone = SASS_MEMORY_CLONE((*result)[i]);
|
|
Complex_Selector_Obj childSeq = (*child)[j];
|
|
Complex_Selector_Obj base = childSeq->tail();
|
|
|
|
// Must be a simple sequence
|
|
if( childSeq->combinator() != Complex_Selector::Combinator::ANCESTOR_OF ) {
|
|
std::string msg("Can't append \"");
|
|
msg += childSeq->to_string();
|
|
msg += "\" to \"";
|
|
msg += parentSeqClone->to_string();
|
|
msg += "\" for `selector-append'";
|
|
error(msg, pstate, traces);
|
|
}
|
|
|
|
// Cannot be a Universal selector
|
|
Element_Selector_Obj pType = Cast<Element_Selector>(childSeq->head()->first());
|
|
if(pType && pType->name() == "*") {
|
|
std::string msg("Can't append \"");
|
|
msg += childSeq->to_string();
|
|
msg += "\" to \"";
|
|
msg += parentSeqClone->to_string();
|
|
msg += "\" for `selector-append'";
|
|
error(msg, pstate, traces);
|
|
}
|
|
|
|
// TODO: Add check for namespace stuff
|
|
|
|
// append any selectors in childSeq's head
|
|
parentSeqClone->innermost()->head()->concat(base->head());
|
|
|
|
// Set parentSeqClone new tail
|
|
parentSeqClone->innermost()->tail( base->tail() );
|
|
|
|
newElements.push_back(parentSeqClone);
|
|
}
|
|
}
|
|
|
|
result->elements(newElements);
|
|
}
|
|
|
|
Listize listize;
|
|
return result->perform(&listize);
|
|
}
|
|
|
|
Signature selector_unify_sig = "selector-unify($selector1, $selector2)";
|
|
BUILT_IN(selector_unify)
|
|
{
|
|
Selector_List_Obj selector1 = ARGSEL("$selector1", Selector_List_Obj, p_contextualize);
|
|
Selector_List_Obj selector2 = ARGSEL("$selector2", Selector_List_Obj, p_contextualize);
|
|
|
|
Selector_List_Obj result = selector1->unify_with(selector2);
|
|
Listize listize;
|
|
return result->perform(&listize);
|
|
}
|
|
|
|
Signature simple_selectors_sig = "simple-selectors($selector)";
|
|
BUILT_IN(simple_selectors)
|
|
{
|
|
Compound_Selector_Obj sel = ARGSEL("$selector", Compound_Selector_Obj, p_contextualize);
|
|
|
|
List_Ptr l = SASS_MEMORY_NEW(List, sel->pstate(), sel->length(), SASS_COMMA);
|
|
|
|
for (size_t i = 0, L = sel->length(); i < L; ++i) {
|
|
Simple_Selector_Obj ss = (*sel)[i];
|
|
std::string ss_string = ss->to_string() ;
|
|
|
|
l->append(SASS_MEMORY_NEW(String_Quoted, ss->pstate(), ss_string));
|
|
}
|
|
|
|
return l;
|
|
}
|
|
|
|
Signature selector_extend_sig = "selector-extend($selector, $extendee, $extender)";
|
|
BUILT_IN(selector_extend)
|
|
{
|
|
Selector_List_Obj selector = ARGSEL("$selector", Selector_List_Obj, p_contextualize);
|
|
Selector_List_Obj extendee = ARGSEL("$extendee", Selector_List_Obj, p_contextualize);
|
|
Selector_List_Obj extender = ARGSEL("$extender", Selector_List_Obj, p_contextualize);
|
|
|
|
Subset_Map subset_map;
|
|
extender->populate_extends(extendee, subset_map);
|
|
Extend extend(subset_map);
|
|
|
|
Selector_List_Obj result = extend.extendSelectorList(selector, false);
|
|
|
|
Listize listize;
|
|
return result->perform(&listize);
|
|
}
|
|
|
|
Signature selector_replace_sig = "selector-replace($selector, $original, $replacement)";
|
|
BUILT_IN(selector_replace)
|
|
{
|
|
Selector_List_Obj selector = ARGSEL("$selector", Selector_List_Obj, p_contextualize);
|
|
Selector_List_Obj original = ARGSEL("$original", Selector_List_Obj, p_contextualize);
|
|
Selector_List_Obj replacement = ARGSEL("$replacement", Selector_List_Obj, p_contextualize);
|
|
Subset_Map subset_map;
|
|
replacement->populate_extends(original, subset_map);
|
|
Extend extend(subset_map);
|
|
|
|
Selector_List_Obj result = extend.extendSelectorList(selector, true);
|
|
|
|
Listize listize;
|
|
return result->perform(&listize);
|
|
}
|
|
|
|
Signature selector_parse_sig = "selector-parse($selector)";
|
|
BUILT_IN(selector_parse)
|
|
{
|
|
Selector_List_Obj sel = ARGSEL("$selector", Selector_List_Obj, p_contextualize);
|
|
|
|
Listize listize;
|
|
return sel->perform(&listize);
|
|
}
|
|
|
|
Signature is_superselector_sig = "is-superselector($super, $sub)";
|
|
BUILT_IN(is_superselector)
|
|
{
|
|
Selector_List_Obj sel_sup = ARGSEL("$super", Selector_List_Obj, p_contextualize);
|
|
Selector_List_Obj sel_sub = ARGSEL("$sub", Selector_List_Obj, p_contextualize);
|
|
bool result = sel_sup->is_superselector_of(sel_sub);
|
|
return SASS_MEMORY_NEW(Boolean, pstate, result);
|
|
}
|
|
|
|
Signature unique_id_sig = "unique-id()";
|
|
BUILT_IN(unique_id)
|
|
{
|
|
std::stringstream ss;
|
|
std::uniform_real_distribution<> distributor(0, 4294967296); // 16^8
|
|
uint_fast32_t distributed = static_cast<uint_fast32_t>(distributor(rand));
|
|
ss << "u" << std::setfill('0') << std::setw(8) << std::hex << distributed;
|
|
return SASS_MEMORY_NEW(String_Quoted, pstate, ss.str());
|
|
}
|
|
|
|
Signature is_bracketed_sig = "is-bracketed($list)";
|
|
BUILT_IN(is_bracketed)
|
|
{
|
|
Value_Obj value = ARG("$list", Value);
|
|
List_Obj list = Cast<List>(value);
|
|
return SASS_MEMORY_NEW(Boolean, pstate, list && list->is_bracketed());
|
|
}
|
|
|
|
Signature content_exists_sig = "content-exists()";
|
|
BUILT_IN(content_exists)
|
|
{
|
|
if (!d_env.has_global("is_in_mixin")) {
|
|
error("Cannot call content-exists() except within a mixin.", pstate, traces);
|
|
}
|
|
return SASS_MEMORY_NEW(Boolean, pstate, d_env.has_lexical("@content[m]"));
|
|
}
|
|
|
|
Signature get_function_sig = "get-function($name, $css: false)";
|
|
BUILT_IN(get_function)
|
|
{
|
|
String_Constant_Ptr ss = Cast<String_Constant>(env["$name"]);
|
|
if (!ss) {
|
|
error("$name: " + (env["$name"]->to_string()) + " is not a string for `get-function'", pstate, traces);
|
|
}
|
|
|
|
std::string name = Util::normalize_underscores(unquote(ss->value()));
|
|
std::string full_name = name + "[f]";
|
|
|
|
Boolean_Obj css = ARG("$css", Boolean);
|
|
if (!css->is_false()) {
|
|
Definition_Ptr def = SASS_MEMORY_NEW(Definition,
|
|
pstate,
|
|
name,
|
|
SASS_MEMORY_NEW(Parameters, pstate),
|
|
SASS_MEMORY_NEW(Block, pstate, 0, false),
|
|
Definition::FUNCTION);
|
|
return SASS_MEMORY_NEW(Function, pstate, def, true);
|
|
}
|
|
|
|
|
|
if (!d_env.has_global(full_name)) {
|
|
error("Function not found: " + name, pstate, traces);
|
|
}
|
|
|
|
Definition_Ptr def = Cast<Definition>(d_env[full_name]);
|
|
return SASS_MEMORY_NEW(Function, pstate, def, false);
|
|
}
|
|
}
|
|
}
|
|
|