1524 lines
32 KiB
C++
1524 lines
32 KiB
C++
#include "visual_script_expression.h"
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bool VisualScriptExpression::_set(const StringName& p_name, const Variant& p_value) {
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if (String(p_name)=="expression") {
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expression=p_value;
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expression_dirty=true;
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ports_changed_notify();
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return true;
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}
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if (String(p_name)=="out_type") {
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output_type=Variant::Type(int(p_value));
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expression_dirty=true;
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ports_changed_notify();
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return true;
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}
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if (String(p_name)=="sequenced") {
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sequenced=p_value;
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ports_changed_notify();
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return true;
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}
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if (String(p_name)=="input_count") {
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int from=inputs.size();
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inputs.resize(int(p_value));
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for(int i=from;i<inputs.size();i++) {
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inputs[i].name=String::chr('a'+i);
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if (from==0) {
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inputs[i].type=output_type;
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} else {
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inputs[i].type=inputs[from-1].type;
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}
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}
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expression_dirty=true;
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ports_changed_notify();
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_change_notify();
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return true;
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}
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if (String(p_name).begins_with("input/")) {
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int idx=String(p_name).get_slice("/",1).to_int();
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ERR_FAIL_INDEX_V(idx,inputs.size(),false);
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String what=String(p_name).get_slice("/",2);
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if (what=="type") {
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inputs[idx].type=Variant::Type(int(p_value));
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} else if (what=="name") {
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inputs[idx].name=p_value;
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} else {
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return false;
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}
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expression_dirty=true;
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ports_changed_notify();
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return true;
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}
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return false;
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}
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bool VisualScriptExpression::_get(const StringName& p_name,Variant &r_ret) const {
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if (String(p_name)=="expression") {
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r_ret=expression;
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return true;
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}
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if (String(p_name)=="out_type") {
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r_ret=output_type;
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return true;
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}
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if (String(p_name)=="sequenced") {
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r_ret=sequenced;
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return true;
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}
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if (String(p_name)=="input_count") {
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r_ret=inputs.size();
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return true;
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}
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if (String(p_name).begins_with("input/")) {
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int idx=String(p_name).get_slice("/",1).to_int();
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ERR_FAIL_INDEX_V(idx,inputs.size(),false);
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String what=String(p_name).get_slice("/",2);
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if (what=="type") {
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r_ret=inputs[idx].type;
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} else if (what=="name") {
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r_ret=inputs[idx].name;
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} else {
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return false;
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}
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return true;
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}
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return false;
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}
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void VisualScriptExpression::_get_property_list( List<PropertyInfo> *p_list) const {
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String argt="Any";
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for(int i=1;i<Variant::VARIANT_MAX;i++) {
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argt+=","+Variant::get_type_name(Variant::Type(i));
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}
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p_list->push_back(PropertyInfo(Variant::STRING,"expression",PROPERTY_HINT_NONE,"",PROPERTY_USAGE_NOEDITOR));
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p_list->push_back(PropertyInfo(Variant::INT,"out_type",PROPERTY_HINT_ENUM,argt));
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p_list->push_back(PropertyInfo(Variant::INT,"input_count",PROPERTY_HINT_RANGE,"0,64,1"));
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p_list->push_back(PropertyInfo(Variant::BOOL,"sequenced"));
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for(int i=0;i<inputs.size();i++) {
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p_list->push_back(PropertyInfo(Variant::INT,"input/"+itos(i)+"/type",PROPERTY_HINT_ENUM,argt));
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p_list->push_back(PropertyInfo(Variant::STRING,"input/"+itos(i)+"/name"));
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}
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}
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int VisualScriptExpression::get_output_sequence_port_count() const {
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return sequenced?1:0;
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}
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bool VisualScriptExpression::has_input_sequence_port() const{
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return sequenced;
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}
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String VisualScriptExpression::get_output_sequence_port_text(int p_port) const{
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return String();
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}
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int VisualScriptExpression::get_input_value_port_count() const{
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return inputs.size();
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}
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int VisualScriptExpression::get_output_value_port_count() const{
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return 1;
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}
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PropertyInfo VisualScriptExpression::get_input_value_port_info(int p_idx) const{
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return PropertyInfo(inputs[p_idx].type,inputs[p_idx].name);
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}
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PropertyInfo VisualScriptExpression::get_output_value_port_info(int p_idx) const{
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return PropertyInfo(output_type,"result");
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}
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String VisualScriptExpression::get_caption() const{
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return "Expression";
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}
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String VisualScriptExpression::get_text() const{
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return expression;
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}
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Error VisualScriptExpression::_get_token(Token& r_token) {
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while (true) {
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#define GET_CHAR() (str_ofs>=expression.length()?0:expression[str_ofs++])
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CharType cchar = GET_CHAR();
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if (cchar==0) {
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r_token.type=TK_EOF;
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return OK;
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}
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switch(cchar) {
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case 0: {
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r_token.type=TK_EOF;
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return OK;
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} break;
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case '{': {
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r_token.type=TK_CURLY_BRACKET_OPEN;
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return OK;
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};
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case '}': {
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r_token.type=TK_CURLY_BRACKET_CLOSE;
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return OK;
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};
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case '[': {
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r_token.type=TK_BRACKET_OPEN;
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return OK;
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};
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case ']': {
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r_token.type=TK_BRACKET_CLOSE;
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return OK;
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};
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case '(': {
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r_token.type=TK_PARENTHESIS_OPEN;
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return OK;
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};
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case ')': {
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r_token.type=TK_PARENTHESIS_CLOSE;
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return OK;
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};
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case ',': {
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r_token.type=TK_COMMA;
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return OK;
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};
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case ':': {
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r_token.type=TK_COLON;
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return OK;
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};
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case '.': {
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r_token.type=TK_PERIOD;
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return OK;
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};
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case '=': {
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cchar=GET_CHAR();
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if (cchar=='=') {
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r_token.type=TK_OP_EQUAL;
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} else {
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_set_error("Expected '='");
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r_token.type=TK_ERROR;
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return ERR_PARSE_ERROR;
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}
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return OK;
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};
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case '!': {
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if (expression[str_ofs]=='=') {
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r_token.type=TK_OP_NOT_EQUAL;
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str_ofs++;
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} else {
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r_token.type=TK_OP_NOT;
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}
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return OK;
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};
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case '>': {
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if (expression[str_ofs]=='=') {
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r_token.type=TK_OP_GREATER_EQUAL;
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str_ofs++;
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} else if (expression[str_ofs]=='>') {
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r_token.type=TK_OP_SHIFT_RIGHT;
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str_ofs++;
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} else {
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r_token.type=TK_OP_GREATER;
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}
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return OK;
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};
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case '<': {
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if (expression[str_ofs]=='=') {
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r_token.type=TK_OP_LESS_EQUAL;
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str_ofs++;
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} else if (expression[str_ofs]=='<') {
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r_token.type=TK_OP_SHIFT_LEFT;
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str_ofs++;
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} else {
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r_token.type=TK_OP_LESS;
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}
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return OK;
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};
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case '+': {
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r_token.type=TK_OP_ADD;
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return OK;
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};
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case '-': {
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r_token.type=TK_OP_SUB;
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return OK;
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};
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case '/': {
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r_token.type=TK_OP_DIV;
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return OK;
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};
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case '*': {
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r_token.type=TK_OP_MUL;
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return OK;
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};
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case '%': {
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r_token.type=TK_OP_MOD;
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return OK;
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};
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case '&': {
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if (expression[str_ofs]=='&') {
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r_token.type=TK_OP_AND;
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str_ofs++;
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} else {
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r_token.type=TK_OP_BIT_AND;
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}
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return OK;
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};
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case '|': {
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if (expression[str_ofs]=='|') {
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r_token.type=TK_OP_OR;
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str_ofs++;
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} else {
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r_token.type=TK_OP_BIT_OR;
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}
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return OK;
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};
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case '^': {
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r_token.type=TK_OP_BIT_XOR;
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return OK;
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};
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case '~': {
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r_token.type=TK_OP_BIT_INVERT;
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return OK;
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};
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case '"': {
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String str;
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while(true) {
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CharType ch=GET_CHAR();
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if (ch==0) {
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_set_error("Unterminated String");
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r_token.type=TK_ERROR;
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return ERR_PARSE_ERROR;
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} else if (ch=='"') {
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break;
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} else if (ch=='\\') {
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//escaped characters...
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CharType next = GET_CHAR();
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if (next==0) {
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_set_error("Unterminated String");
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r_token.type=TK_ERROR;
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return ERR_PARSE_ERROR;
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}
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CharType res=0;
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switch(next) {
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case 'b': res=8; break;
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case 't': res=9; break;
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case 'n': res=10; break;
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case 'f': res=12; break;
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case 'r': res=13; break;
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case 'u': {
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//hexnumbarh - oct is deprecated
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for(int j=0;j<4;j++) {
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CharType c = GET_CHAR();
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if (c==0) {
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_set_error("Unterminated String");
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r_token.type=TK_ERROR;
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return ERR_PARSE_ERROR;
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}
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if (!((c>='0' && c<='9') || (c>='a' && c<='f') || (c>='A' && c<='F'))) {
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_set_error("Malformed hex constant in string");
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r_token.type=TK_ERROR;
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return ERR_PARSE_ERROR;
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}
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CharType v;
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if (c>='0' && c<='9') {
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v=c-'0';
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} else if (c>='a' && c<='f') {
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v=c-'a';
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v+=10;
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} else if (c>='A' && c<='F') {
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v=c-'A';
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v+=10;
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} else {
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ERR_PRINT("BUG");
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v=0;
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}
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res<<=4;
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res|=v;
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}
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} break;
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//case '\"': res='\"'; break;
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//case '\\': res='\\'; break;
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//case '/': res='/'; break;
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default: {
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res = next;
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//r_err_str="Invalid escape sequence";
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//return ERR_PARSE_ERROR;
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} break;
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}
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str+=res;
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} else {
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str+=ch;
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}
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}
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r_token.type=TK_CONSTANT;
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r_token.value=str;
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return OK;
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} break;
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default: {
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if (cchar<=32) {
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break;
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}
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if (cchar=='-' || (cchar>='0' && cchar<='9')) {
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//a number
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String num;
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#define READING_SIGN 0
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#define READING_INT 1
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#define READING_DEC 2
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#define READING_EXP 3
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#define READING_DONE 4
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int reading=READING_INT;
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if (cchar=='-') {
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num+='-';
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cchar=GET_CHAR();
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}
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CharType c = cchar;
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bool exp_sign=false;
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bool exp_beg=false;
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bool is_float=false;
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while(true) {
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switch(reading) {
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case READING_INT: {
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if (c>='0' && c<='9') {
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//pass
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} else if (c=='.') {
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reading=READING_DEC;
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is_float=true;
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} else if (c=='e') {
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reading=READING_EXP;
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} else {
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reading=READING_DONE;
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}
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} break;
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case READING_DEC: {
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if (c>='0' && c<='9') {
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} else if (c=='e') {
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reading=READING_EXP;
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} else {
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reading=READING_DONE;
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}
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} break;
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case READING_EXP: {
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if (c>='0' && c<='9') {
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exp_beg=true;
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} else if ((c=='-' || c=='+') && !exp_sign && !exp_beg) {
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if (c=='-')
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is_float=true;
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exp_sign=true;
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} else {
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reading=READING_DONE;
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}
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} break;
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}
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if (reading==READING_DONE)
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break;
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num+=String::chr(c);
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c = GET_CHAR();
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}
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str_ofs--;
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r_token.type=TK_CONSTANT;
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if (is_float)
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r_token.value=num.to_double();
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else
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r_token.value=num.to_int();
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return OK;
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} else if ((cchar>='A' && cchar<='Z') || (cchar>='a' && cchar<='z') || cchar=='_') {
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String id;
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bool first=true;
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while((cchar>='A' && cchar<='Z') || (cchar>='a' && cchar<='z') || cchar=='_' || (!first && cchar>='0' && cchar<='9')) {
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id+=String::chr(cchar);
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cchar=GET_CHAR();
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first=false;
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}
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str_ofs--; //go back one
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if (id=="in") {
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r_token.type=TK_OP_IN;
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} else if (id=="null") {
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r_token.type=TK_CONSTANT;
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r_token.value=Variant();
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} else if (id=="true") {
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r_token.type=TK_CONSTANT;
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r_token.value=true;
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} else if (id=="false") {
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r_token.type=TK_CONSTANT;
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r_token.value=false;
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} else if (id=="PI") {
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r_token.type=TK_CONSTANT;
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r_token.value=Math_PI;
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} else if (id=="not") {
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r_token.type=TK_OP_NOT;
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} else if (id=="or") {
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r_token.type=TK_OP_OR;
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} else if (id=="and") {
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r_token.type=TK_OP_AND;
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} else if (id=="self") {
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r_token.type=TK_SELF;
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} else {
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for(int i=0;i<Variant::VARIANT_MAX;i++) {
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if (id==Variant::get_type_name(Variant::Type(i))) {
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r_token.type=TK_BASIC_TYPE;
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r_token.value=i;
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return OK;
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break;
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}
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}
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VisualScriptBuiltinFunc::BuiltinFunc bifunc = VisualScriptBuiltinFunc::find_function(id);
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if (bifunc!=VisualScriptBuiltinFunc::FUNC_MAX) {
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r_token.type=TK_BUILTIN_FUNC;
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r_token.value=bifunc;
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return OK;
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}
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r_token.type=TK_IDENTIFIER;
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r_token.value=id;
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}
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return OK;
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} else {
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_set_error("Unexpected character.");
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r_token.type=TK_ERROR;
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return ERR_PARSE_ERROR;
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}
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}
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}
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}
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r_token.type=TK_ERROR;
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return ERR_PARSE_ERROR;
|
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}
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const char* VisualScriptExpression::token_name[TK_MAX]={
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"CURLY BRACKET OPEN",
|
|
"CURLY BRACKET CLOSE",
|
|
"BRACKET OPEN",
|
|
"BRACKET CLOSE",
|
|
"PARENTHESIS OPEN",
|
|
"PARENTHESIS CLOSE",
|
|
"IDENTIFIER",
|
|
"BUILTIN FUNC",
|
|
"SELF",
|
|
"CONSTANT",
|
|
"BASIC TYPE",
|
|
"COLON",
|
|
"COMMA",
|
|
"PERIOD",
|
|
"OP IN",
|
|
"OP EQUAL",
|
|
"OP NOT EQUAL",
|
|
"OP LESS",
|
|
"OP LESS EQUAL",
|
|
"OP GREATER",
|
|
"OP GREATER EQUAL",
|
|
"OP AND",
|
|
"OP OR",
|
|
"OP NOT",
|
|
"OP ADD",
|
|
"OP SUB",
|
|
"OP MUL",
|
|
"OP DIV",
|
|
"OP MOD",
|
|
"OP SHIFT LEFT",
|
|
"OP SHIFT RIGHT",
|
|
"OP BIT AND",
|
|
"OP BIT OR",
|
|
"OP BIT XOR",
|
|
"OP BIT INVERT",
|
|
"EOF",
|
|
"ERROR"
|
|
};
|
|
|
|
VisualScriptExpression::ENode* VisualScriptExpression::_parse_expression() {
|
|
|
|
|
|
Vector<Expression> expression;
|
|
|
|
while(true) {
|
|
//keep appending stuff to expression
|
|
ENode*expr=NULL;
|
|
|
|
Token tk;
|
|
_get_token(tk);
|
|
if (error_set)
|
|
return NULL;
|
|
|
|
|
|
|
|
switch(tk.type) {
|
|
case TK_CURLY_BRACKET_OPEN: {
|
|
//a dictionary
|
|
DictionaryNode *dn = alloc_node<DictionaryNode>();
|
|
|
|
|
|
while(true) {
|
|
|
|
int cofs=str_ofs;
|
|
_get_token(tk);
|
|
if (tk.type==TK_CURLY_BRACKET_CLOSE) {
|
|
break;
|
|
}
|
|
str_ofs=cofs; //revert
|
|
//parse an expression
|
|
ENode* expr=_parse_expression();
|
|
if (!expr)
|
|
return NULL;
|
|
dn->dict.push_back(expr);
|
|
|
|
_get_token(tk);
|
|
if (tk.type!=TK_COLON) {
|
|
_set_error("Expected ':'");
|
|
return NULL;
|
|
}
|
|
|
|
expr=_parse_expression();
|
|
if (!expr)
|
|
return NULL;
|
|
|
|
dn->dict.push_back(expr);
|
|
|
|
cofs=str_ofs;
|
|
_get_token(tk);
|
|
if (tk.type==TK_COMMA) {
|
|
//all good
|
|
} else if (tk.type==TK_CURLY_BRACKET_CLOSE) {
|
|
str_ofs=cofs;
|
|
} else {
|
|
_set_error("Expected ',' or '}'");
|
|
}
|
|
}
|
|
|
|
expr=dn;
|
|
} break;
|
|
case TK_BRACKET_OPEN: {
|
|
//an array
|
|
|
|
ArrayNode *an = alloc_node<ArrayNode>();
|
|
|
|
|
|
while(true) {
|
|
|
|
int cofs=str_ofs;
|
|
_get_token(tk);
|
|
if (tk.type==TK_BRACKET_CLOSE) {
|
|
break;
|
|
}
|
|
str_ofs=cofs; //revert
|
|
//parse an expression
|
|
ENode* expr=_parse_expression();
|
|
if (!expr)
|
|
return NULL;
|
|
an->array.push_back(expr);
|
|
|
|
cofs=str_ofs;
|
|
_get_token(tk);
|
|
if (tk.type==TK_COMMA) {
|
|
//all good
|
|
} else if (tk.type==TK_BRACKET_CLOSE) {
|
|
str_ofs=cofs;
|
|
} else {
|
|
_set_error("Expected ',' or ']'");
|
|
}
|
|
}
|
|
|
|
expr=an;
|
|
} break;
|
|
case TK_PARENTHESIS_OPEN: {
|
|
//a suexpression
|
|
ENode* e=_parse_expression();
|
|
if (error_set)
|
|
return NULL;
|
|
_get_token(tk);
|
|
if (tk.type!=TK_PARENTHESIS_CLOSE) {
|
|
_set_error("Expected ')'");
|
|
return NULL;
|
|
}
|
|
|
|
expr=e;
|
|
|
|
} break;
|
|
case TK_IDENTIFIER: {
|
|
|
|
String what = tk.value;
|
|
int index=-1;
|
|
for(int i=0;i<inputs.size();i++) {
|
|
if (what==inputs[i].name) {
|
|
index=i;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (index!=-1) {
|
|
InputNode *input = alloc_node<InputNode>();
|
|
input->index=index;
|
|
expr=input;
|
|
} else {
|
|
_set_error("Invalid input identifier '"+what+"'. For script variables, use self (locals are for inputs)."+what);
|
|
return NULL;
|
|
}
|
|
} break;
|
|
case TK_SELF: {
|
|
|
|
SelfNode *self = alloc_node<SelfNode>();
|
|
expr=self;
|
|
} break;
|
|
case TK_CONSTANT: {
|
|
ConstantNode *constant = alloc_node<ConstantNode>();
|
|
constant->value=tk.value;
|
|
expr=constant;
|
|
} break;
|
|
case TK_BASIC_TYPE: {
|
|
//constructor..
|
|
|
|
Variant::Type bt = Variant::Type(int(tk.value));
|
|
_get_token(tk);
|
|
if (tk.type!=TK_PARENTHESIS_OPEN) {
|
|
_set_error("Expected '('");
|
|
return NULL;
|
|
}
|
|
|
|
ConstructorNode *constructor = alloc_node<ConstructorNode>();
|
|
constructor->data_type=bt;
|
|
|
|
while(true) {
|
|
|
|
int cofs=str_ofs;
|
|
_get_token(tk);
|
|
if (tk.type==TK_PARENTHESIS_CLOSE) {
|
|
break;
|
|
}
|
|
str_ofs=cofs; //revert
|
|
//parse an expression
|
|
ENode* expr=_parse_expression();
|
|
if (!expr)
|
|
return NULL;
|
|
|
|
constructor->arguments.push_back(expr);
|
|
|
|
cofs=str_ofs;
|
|
_get_token(tk);
|
|
if (tk.type==TK_COMMA) {
|
|
//all good
|
|
} else if (tk.type==TK_PARENTHESIS_CLOSE) {
|
|
str_ofs=cofs;
|
|
} else {
|
|
_set_error("Expected ',' or ')'");
|
|
}
|
|
}
|
|
|
|
expr=constructor;
|
|
|
|
} break;
|
|
case TK_BUILTIN_FUNC: {
|
|
//builtin function
|
|
|
|
Variant::Type bt = Variant::Type(int(tk.value));
|
|
_get_token(tk);
|
|
if (tk.type!=TK_PARENTHESIS_OPEN) {
|
|
_set_error("Expected '('");
|
|
return NULL;
|
|
}
|
|
|
|
BuiltinFuncNode *bifunc = alloc_node<BuiltinFuncNode>();
|
|
bifunc->func=VisualScriptBuiltinFunc::BuiltinFunc(int(tk.value));
|
|
|
|
while(true) {
|
|
|
|
int cofs=str_ofs;
|
|
_get_token(tk);
|
|
if (tk.type==TK_PARENTHESIS_CLOSE) {
|
|
break;
|
|
}
|
|
str_ofs=cofs; //revert
|
|
//parse an expression
|
|
ENode* expr=_parse_expression();
|
|
if (!expr)
|
|
return NULL;
|
|
|
|
bifunc->arguments.push_back(expr);
|
|
|
|
cofs=str_ofs;
|
|
_get_token(tk);
|
|
if (tk.type==TK_COMMA) {
|
|
//all good
|
|
} else if (tk.type==TK_PARENTHESIS_CLOSE) {
|
|
str_ofs=cofs;
|
|
} else {
|
|
_set_error("Expected ',' or ')'");
|
|
}
|
|
}
|
|
|
|
int expected_args = VisualScriptBuiltinFunc::get_func_argument_count(bifunc->func);
|
|
if (bifunc->arguments.size() != expected_args) {
|
|
_set_error("Builtin func '"+VisualScriptBuiltinFunc::get_func_name(bifunc->func)+"' expects "+itos(expected_args)+" arguments.");
|
|
}
|
|
|
|
expr=bifunc;
|
|
|
|
} break;
|
|
case TK_OP_SUB: {
|
|
|
|
Expression e;
|
|
e.is_op=true;
|
|
e.op=Variant::OP_NEGATE;
|
|
expression.push_back(e);
|
|
continue;
|
|
} break;
|
|
case TK_OP_NOT: {
|
|
|
|
Expression e;
|
|
e.is_op=true;
|
|
e.op=Variant::OP_NOT;
|
|
expression.push_back(e);
|
|
continue;
|
|
} break;
|
|
|
|
default: {
|
|
_set_error("Expected expression.");
|
|
return NULL;
|
|
} break;
|
|
|
|
}
|
|
|
|
//before going to operators, must check indexing!
|
|
|
|
while(true) {
|
|
int cofs2=str_ofs;
|
|
_get_token(tk);
|
|
if (error_set)
|
|
return NULL;
|
|
|
|
bool done=false;
|
|
|
|
switch(tk.type) {
|
|
case TK_BRACKET_OPEN: {
|
|
//value indexing
|
|
|
|
IndexNode *index = alloc_node<IndexNode>();
|
|
index->base=expr;
|
|
|
|
ENode* what=_parse_expression();
|
|
if (!what)
|
|
return NULL;
|
|
|
|
index->index=what;
|
|
|
|
_get_token(tk);
|
|
if (tk.type!=TK_BRACKET_CLOSE) {
|
|
_set_error("Expected ']' at end of index.");
|
|
return NULL;
|
|
}
|
|
expr=index;
|
|
|
|
} break;
|
|
case TK_PERIOD: {
|
|
//named indexing or function call
|
|
_get_token(tk);
|
|
if (tk.type!=TK_IDENTIFIER) {
|
|
_set_error("Expected identifier after '.'");
|
|
return NULL;
|
|
}
|
|
|
|
StringName identifier=tk.value;
|
|
|
|
int cofs=str_ofs;
|
|
_get_token(tk);
|
|
if (tk.type==TK_PARENTHESIS_OPEN) {
|
|
//function call
|
|
CallNode *func_call = alloc_node<CallNode>();
|
|
func_call->method=identifier;
|
|
func_call->base=expr;
|
|
|
|
while(true) {
|
|
|
|
int cofs=str_ofs;
|
|
_get_token(tk);
|
|
if (tk.type==TK_PARENTHESIS_CLOSE) {
|
|
break;
|
|
}
|
|
str_ofs=cofs; //revert
|
|
//parse an expression
|
|
ENode* expr=_parse_expression();
|
|
if (!expr)
|
|
return NULL;
|
|
|
|
func_call->arguments.push_back(expr);
|
|
|
|
cofs=str_ofs;
|
|
_get_token(tk);
|
|
if (tk.type==TK_COMMA) {
|
|
//all good
|
|
} else if (tk.type==TK_PARENTHESIS_CLOSE) {
|
|
str_ofs=cofs;
|
|
} else {
|
|
_set_error("Expected ',' or ')'");
|
|
}
|
|
}
|
|
|
|
expr=func_call;
|
|
} else {
|
|
//named indexing
|
|
str_ofs=cofs;
|
|
|
|
NamedIndexNode *index = alloc_node<NamedIndexNode>();
|
|
index->base=expr;
|
|
index->name=identifier;
|
|
expr=index;
|
|
|
|
}
|
|
|
|
} break;
|
|
default: {
|
|
str_ofs=cofs2;
|
|
done=true;
|
|
} break;
|
|
}
|
|
|
|
if (done)
|
|
break;
|
|
}
|
|
|
|
//push expression
|
|
{
|
|
Expression e;
|
|
e.is_op=false;
|
|
e.node=expr;
|
|
expression.push_back(e);
|
|
}
|
|
|
|
//ok finally look for an operator
|
|
|
|
|
|
int cofs=str_ofs;
|
|
_get_token(tk);
|
|
if (error_set)
|
|
return NULL;
|
|
|
|
|
|
Variant::Operator op = Variant::OP_MAX;
|
|
|
|
switch(tk.type) {
|
|
case TK_OP_IN: op=Variant::OP_IN; break;
|
|
case TK_OP_EQUAL: op=Variant::OP_EQUAL; break;
|
|
case TK_OP_NOT_EQUAL: op=Variant::OP_NOT_EQUAL; break;
|
|
case TK_OP_LESS: op=Variant::OP_LESS; break;
|
|
case TK_OP_LESS_EQUAL: op=Variant::OP_LESS_EQUAL; break;
|
|
case TK_OP_GREATER: op=Variant::OP_GREATER; break;
|
|
case TK_OP_GREATER_EQUAL: op=Variant::OP_GREATER_EQUAL; break;
|
|
case TK_OP_AND: op=Variant::OP_AND; break;
|
|
case TK_OP_OR: op=Variant::OP_OR; break;
|
|
case TK_OP_NOT: op=Variant::OP_NOT; break;
|
|
case TK_OP_ADD: op=Variant::OP_ADD; break;
|
|
case TK_OP_SUB: op=Variant::OP_SUBSTRACT; break;
|
|
case TK_OP_MUL: op=Variant::OP_MULTIPLY; break;
|
|
case TK_OP_DIV: op=Variant::OP_DIVIDE; break;
|
|
case TK_OP_MOD: op=Variant::OP_MODULE; break;
|
|
case TK_OP_SHIFT_LEFT: op=Variant::OP_SHIFT_LEFT; break;
|
|
case TK_OP_SHIFT_RIGHT: op=Variant::OP_SHIFT_RIGHT; break;
|
|
case TK_OP_BIT_AND: op=Variant::OP_BIT_AND; break;
|
|
case TK_OP_BIT_OR: op=Variant::OP_BIT_OR; break;
|
|
case TK_OP_BIT_XOR: op=Variant::OP_BIT_XOR; break;
|
|
case TK_OP_BIT_INVERT: op=Variant::OP_BIT_NEGATE; break;
|
|
default: {};
|
|
}
|
|
|
|
if (op==Variant::OP_MAX) { //stop appending stuff
|
|
str_ofs=cofs;
|
|
break;
|
|
}
|
|
|
|
//push operator and go on
|
|
{
|
|
Expression e;
|
|
e.is_op=true;
|
|
e.op=op;
|
|
expression.push_back(e);
|
|
}
|
|
}
|
|
|
|
|
|
/* Reduce the set set of expressions and place them in an operator tree, respecting precedence */
|
|
|
|
|
|
while(expression.size()>1) {
|
|
|
|
int next_op=-1;
|
|
int min_priority=0xFFFFF;
|
|
bool is_unary=false;
|
|
|
|
for(int i=0;i<expression.size();i++) {
|
|
|
|
|
|
|
|
if (!expression[i].is_op) {
|
|
|
|
continue;
|
|
}
|
|
|
|
int priority;
|
|
|
|
bool unary=false;
|
|
|
|
switch(expression[i].op) {
|
|
|
|
|
|
case Variant::OP_BIT_NEGATE: priority=0; unary=true; break;
|
|
case Variant::OP_NEGATE: priority=1; unary=true; break;
|
|
|
|
case Variant::OP_MULTIPLY: priority=2; break;
|
|
case Variant::OP_DIVIDE: priority=2; break;
|
|
case Variant::OP_MODULE: priority=2; break;
|
|
|
|
case Variant::OP_ADD: priority=3; break;
|
|
case Variant::OP_SUBSTRACT: priority=3; break;
|
|
|
|
case Variant::OP_SHIFT_LEFT: priority=4; break;
|
|
case Variant::OP_SHIFT_RIGHT: priority=4; break;
|
|
|
|
case Variant::OP_BIT_AND: priority=5; break;
|
|
case Variant::OP_BIT_XOR: priority=6; break;
|
|
case Variant::OP_BIT_OR: priority=7; break;
|
|
|
|
case Variant::OP_LESS: priority=8; break;
|
|
case Variant::OP_LESS_EQUAL: priority=8; break;
|
|
case Variant::OP_GREATER: priority=8; break;
|
|
case Variant::OP_GREATER_EQUAL: priority=8; break;
|
|
|
|
case Variant::OP_EQUAL: priority=8; break;
|
|
case Variant::OP_NOT_EQUAL: priority=8; break;
|
|
|
|
case Variant::OP_IN: priority=10; break;
|
|
|
|
case Variant::OP_NOT: priority=11; unary=true; break;
|
|
case Variant::OP_AND: priority=12; break;
|
|
case Variant::OP_OR: priority=13; break;
|
|
|
|
|
|
default: {
|
|
_set_error("Parser bug, invalid operator in expression: "+itos(expression[i].op));
|
|
return NULL;
|
|
}
|
|
|
|
}
|
|
|
|
if (priority<min_priority) {
|
|
// < is used for left to right (default)
|
|
// <= is used for right to left
|
|
|
|
next_op=i;
|
|
min_priority=priority;
|
|
is_unary=unary;
|
|
}
|
|
|
|
}
|
|
|
|
if (next_op==-1) {
|
|
|
|
|
|
_set_error("Yet another parser bug....");
|
|
ERR_FAIL_COND_V(next_op==-1,NULL);
|
|
}
|
|
|
|
|
|
// OK! create operator..
|
|
if (is_unary) {
|
|
|
|
int expr_pos=next_op;
|
|
while(expression[expr_pos].is_op) {
|
|
|
|
expr_pos++;
|
|
if (expr_pos==expression.size()) {
|
|
//can happen..
|
|
_set_error("Unexpected end of expression..");
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
//consecutively do unary opeators
|
|
for(int i=expr_pos-1;i>=next_op;i--) {
|
|
|
|
OperatorNode *op = alloc_node<OperatorNode>();
|
|
op->op=expression[i].op;
|
|
op->nodes[0]=expression[i+1].node;
|
|
op->nodes[1]=NULL;
|
|
expression[i].is_op=false;
|
|
expression[i].node=op;
|
|
expression.remove(i+1);
|
|
}
|
|
|
|
|
|
} else {
|
|
|
|
if (next_op <1 || next_op>=(expression.size()-1)) {
|
|
_set_error("Parser bug..");
|
|
ERR_FAIL_V(NULL);
|
|
}
|
|
|
|
OperatorNode *op = alloc_node<OperatorNode>();
|
|
op->op=expression[next_op].op;
|
|
|
|
if (expression[next_op-1].is_op) {
|
|
|
|
_set_error("Parser bug..");
|
|
ERR_FAIL_V(NULL);
|
|
}
|
|
|
|
if (expression[next_op+1].is_op) {
|
|
// this is not invalid and can really appear
|
|
// but it becomes invalid anyway because no binary op
|
|
// can be followed by an unary op in a valid combination,
|
|
// due to how precedence works, unaries will always dissapear first
|
|
|
|
_set_error("Unexpected two consecutive operators.");
|
|
return NULL;
|
|
}
|
|
|
|
|
|
op->nodes[0]=expression[next_op-1].node; //expression goes as left
|
|
op->nodes[1]=expression[next_op+1].node; //next expression goes as right
|
|
|
|
//replace all 3 nodes by this operator and make it an expression
|
|
expression[next_op-1].node=op;
|
|
expression.remove(next_op);
|
|
expression.remove(next_op);
|
|
}
|
|
}
|
|
|
|
return expression[0].node;
|
|
}
|
|
|
|
bool VisualScriptExpression::_compile_expression() {
|
|
|
|
if (!expression_dirty)
|
|
return error_set;
|
|
|
|
if (nodes) {
|
|
memdelete(nodes);
|
|
nodes=NULL;
|
|
root=NULL;
|
|
|
|
}
|
|
|
|
error_str=String();
|
|
error_set=false;
|
|
str_ofs=0;
|
|
|
|
root=_parse_expression();
|
|
|
|
if (error_set) {
|
|
root=NULL;
|
|
if (nodes) {
|
|
memdelete(nodes);
|
|
}
|
|
nodes=NULL;
|
|
return true;
|
|
}
|
|
|
|
expression_dirty=false;
|
|
return false;
|
|
}
|
|
|
|
|
|
class VisualScriptNodeInstanceExpression : public VisualScriptNodeInstance {
|
|
public:
|
|
|
|
VisualScriptInstance* instance;
|
|
VisualScriptExpression *expression;
|
|
|
|
//virtual int get_working_memory_size() const { return 0; }
|
|
//execute by parsing the tree directly
|
|
virtual bool _execute(const Variant** p_inputs,VisualScriptExpression::ENode *p_node,Variant& r_ret,String& r_error_str,Variant::CallError &ce) {
|
|
|
|
switch(p_node->type) {
|
|
case VisualScriptExpression::ENode::TYPE_INPUT: {
|
|
|
|
const VisualScriptExpression::InputNode *in = static_cast<const VisualScriptExpression::InputNode*>(p_node);
|
|
r_ret=*p_inputs[in->index];
|
|
} break;
|
|
case VisualScriptExpression::ENode::TYPE_CONSTANT: {
|
|
|
|
const VisualScriptExpression::ConstantNode *c = static_cast<const VisualScriptExpression::ConstantNode*>(p_node);
|
|
r_ret=c->value;
|
|
|
|
} break;
|
|
case VisualScriptExpression::ENode::TYPE_SELF: {
|
|
|
|
r_ret=instance->get_owner_ptr();
|
|
} break;
|
|
case VisualScriptExpression::ENode::TYPE_OPERATOR: {
|
|
|
|
|
|
const VisualScriptExpression::OperatorNode *op = static_cast<const VisualScriptExpression::OperatorNode*>(p_node);
|
|
|
|
Variant a;
|
|
bool ret = _execute(p_inputs,op->nodes[0],a,r_error_str,ce);
|
|
if (ret)
|
|
return true;
|
|
|
|
Variant b;
|
|
|
|
if (op->nodes[1]) {
|
|
ret = _execute(p_inputs,op->nodes[1],b,r_error_str,ce);
|
|
if (ret)
|
|
return true;
|
|
}
|
|
|
|
bool valid=true;
|
|
Variant::evaluate(op->op,a,b,r_ret,valid);
|
|
if (!valid) {
|
|
r_error_str="Invalid operands to operator "+Variant::get_operator_name(op->op)+": "+Variant::get_type_name(a.get_type())+" and "+Variant::get_type_name(b.get_type())+".";
|
|
return true;
|
|
}
|
|
|
|
} break;
|
|
case VisualScriptExpression::ENode::TYPE_INDEX: {
|
|
|
|
const VisualScriptExpression::IndexNode *index = static_cast<const VisualScriptExpression::IndexNode*>(p_node);
|
|
|
|
Variant base;
|
|
bool ret = _execute(p_inputs,index->base,base,r_error_str,ce);
|
|
if (ret)
|
|
return true;
|
|
|
|
Variant idx;
|
|
|
|
ret = _execute(p_inputs,index->index,idx,r_error_str,ce);
|
|
if (ret)
|
|
return true;
|
|
|
|
bool valid;
|
|
r_ret=base.get(idx,&valid);
|
|
if (!valid) {
|
|
r_error_str="Invalid index of type "+Variant::get_type_name(idx.get_type())+" for base of type "+Variant::get_type_name(base.get_type())+".";
|
|
return true;
|
|
}
|
|
|
|
|
|
|
|
} break;
|
|
case VisualScriptExpression::ENode::TYPE_NAMED_INDEX: {
|
|
|
|
const VisualScriptExpression::NamedIndexNode *index = static_cast<const VisualScriptExpression::NamedIndexNode*>(p_node);
|
|
|
|
Variant base;
|
|
bool ret = _execute(p_inputs,index->base,base,r_error_str,ce);
|
|
if (ret)
|
|
return true;
|
|
|
|
bool valid;
|
|
r_ret=base.get_named(index->name,&valid);
|
|
if (!valid) {
|
|
r_error_str="Invalid index '"+String(index->name)+"' for base of type "+Variant::get_type_name(base.get_type())+".";
|
|
return true;
|
|
}
|
|
|
|
} break;
|
|
case VisualScriptExpression::ENode::TYPE_ARRAY: {
|
|
const VisualScriptExpression::ArrayNode *array = static_cast<const VisualScriptExpression::ArrayNode*>(p_node);
|
|
|
|
Array arr;
|
|
arr.resize(array->array.size());
|
|
for (int i=0;i<array->array.size();i++) {
|
|
|
|
Variant value;
|
|
bool ret = _execute(p_inputs,array->array[i],value,r_error_str,ce);
|
|
if (ret)
|
|
return true;
|
|
arr[i]=value;
|
|
}
|
|
|
|
r_ret=arr;
|
|
|
|
} break;
|
|
case VisualScriptExpression::ENode::TYPE_DICTIONARY: {
|
|
const VisualScriptExpression::DictionaryNode *dictionary = static_cast<const VisualScriptExpression::DictionaryNode*>(p_node);
|
|
|
|
Dictionary d;
|
|
for (int i=0;i<dictionary->dict.size();i+=2) {
|
|
|
|
Variant key;
|
|
bool ret = _execute(p_inputs,dictionary->dict[i+0],key,r_error_str,ce);
|
|
if (ret)
|
|
return true;
|
|
|
|
Variant value;
|
|
ret = _execute(p_inputs,dictionary->dict[i+1],value,r_error_str,ce);
|
|
if (ret)
|
|
return true;
|
|
|
|
d[key]=value;
|
|
}
|
|
|
|
r_ret=d;
|
|
} break;
|
|
case VisualScriptExpression::ENode::TYPE_CONSTRUCTOR: {
|
|
|
|
const VisualScriptExpression::ConstructorNode *constructor = static_cast<const VisualScriptExpression::ConstructorNode*>(p_node);
|
|
|
|
Vector<Variant> arr;
|
|
Vector<const Variant*> argp;
|
|
arr.resize(constructor->arguments.size());
|
|
argp.resize(constructor->arguments.size());
|
|
|
|
for (int i=0;i<constructor->arguments.size();i++) {
|
|
|
|
Variant value;
|
|
bool ret = _execute(p_inputs,constructor->arguments[i],value,r_error_str,ce);
|
|
if (ret)
|
|
return true;
|
|
arr[i]=value;
|
|
argp[i]=&arr[i];
|
|
}
|
|
|
|
|
|
r_ret=Variant::construct(constructor->data_type,argp.ptr(),argp.size(),ce);
|
|
|
|
if (ce.error!=Variant::CallError::CALL_OK) {
|
|
r_error_str="Invalid arguments to construct '"+Variant::get_type_name(constructor->data_type)+"'.";
|
|
return true;
|
|
}
|
|
|
|
|
|
} break;
|
|
case VisualScriptExpression::ENode::TYPE_BUILTIN_FUNC: {
|
|
|
|
const VisualScriptExpression::BuiltinFuncNode *bifunc = static_cast<const VisualScriptExpression::BuiltinFuncNode*>(p_node);
|
|
|
|
Vector<Variant> arr;
|
|
Vector<const Variant*> argp;
|
|
arr.resize(bifunc->arguments.size());
|
|
argp.resize(bifunc->arguments.size());
|
|
|
|
for (int i=0;i<bifunc->arguments.size();i++) {
|
|
|
|
Variant value;
|
|
bool ret = _execute(p_inputs,bifunc->arguments[i],value,r_error_str,ce);
|
|
if (ret)
|
|
return true;
|
|
arr[i]=value;
|
|
argp[i]=&arr[i];
|
|
}
|
|
|
|
|
|
VisualScriptBuiltinFunc::exec_func(bifunc->func,argp.ptr(),&r_ret,ce,r_error_str);
|
|
|
|
if (ce.error!=Variant::CallError::CALL_OK) {
|
|
r_error_str="Builtin Call Failed. "+r_error_str;
|
|
return true;
|
|
}
|
|
|
|
} break;
|
|
case VisualScriptExpression::ENode::TYPE_CALL: {
|
|
|
|
const VisualScriptExpression::CallNode *call = static_cast<const VisualScriptExpression::CallNode*>(p_node);
|
|
|
|
|
|
Variant base;
|
|
bool ret = _execute(p_inputs,call->base,base,r_error_str,ce);
|
|
if (ret)
|
|
return true;
|
|
|
|
Vector<Variant> arr;
|
|
Vector<const Variant*> argp;
|
|
arr.resize(call->arguments.size());
|
|
argp.resize(call->arguments.size());
|
|
|
|
for (int i=0;i<call->arguments.size();i++) {
|
|
|
|
Variant value;
|
|
bool ret = _execute(p_inputs,call->arguments[i],value,r_error_str,ce);
|
|
if (ret)
|
|
return true;
|
|
arr[i]=value;
|
|
argp[i]=&arr[i];
|
|
}
|
|
|
|
|
|
r_ret=base.call(call->method,argp.ptr(),argp.size(),ce);
|
|
|
|
if (ce.error!=Variant::CallError::CALL_OK) {
|
|
r_error_str="On call to '"+String(call->method)+"':";
|
|
return true;
|
|
}
|
|
|
|
} break;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
virtual int step(const Variant** p_inputs,Variant** p_outputs,StartMode p_start_mode,Variant* p_working_mem,Variant::CallError& r_error,String& r_error_str) {
|
|
|
|
if (!expression->root || expression->error_set) {
|
|
r_error_str=expression->error_str;
|
|
r_error.error=Variant::CallError::CALL_ERROR_INVALID_METHOD;
|
|
return 0;
|
|
}
|
|
|
|
|
|
bool error = _execute(p_inputs,expression->root,*p_outputs[0],r_error_str,r_error);
|
|
if (error && r_error.error==Variant::CallError::CALL_OK) {
|
|
r_error.error=Variant::CallError::CALL_ERROR_INVALID_METHOD;
|
|
}
|
|
|
|
#ifdef DEBUG_ENABLED
|
|
if (!error && expression->output_type!=Variant::NIL && !Variant::can_convert_strict(p_outputs[0]->get_type(),expression->output_type)) {
|
|
|
|
r_error_str+="Can't convert expression result from "+Variant::get_type_name(p_outputs[0]->get_type())+" to "+Variant::get_type_name(expression->output_type)+".";
|
|
r_error.error=Variant::CallError::CALL_ERROR_INVALID_METHOD;
|
|
|
|
}
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
};
|
|
|
|
VisualScriptNodeInstance* VisualScriptExpression::instance(VisualScriptInstance* p_instance){
|
|
|
|
_compile_expression();
|
|
VisualScriptNodeInstanceExpression *instance = memnew( VisualScriptNodeInstanceExpression );
|
|
instance->instance=p_instance;
|
|
instance->expression=this;
|
|
return instance;
|
|
}
|
|
|
|
|
|
VisualScriptExpression::VisualScriptExpression()
|
|
{
|
|
output_type=Variant::NIL;
|
|
expression_dirty=true;
|
|
error_set=true;
|
|
root=NULL;
|
|
nodes=NULL;
|
|
sequenced=false;
|
|
}
|
|
|
|
VisualScriptExpression::~VisualScriptExpression() {
|
|
|
|
if (nodes) {
|
|
memdelete(nodes);
|
|
}
|
|
}
|
|
|
|
|
|
void register_visual_script_expression_node() {
|
|
|
|
VisualScriptLanguage::singleton->add_register_func("operators/expression",create_node_generic<VisualScriptExpression>);
|
|
|
|
}
|