1 |
/* |
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* Copyright (c) 2014-2017 Christian Schoenebeck and Andreas Persson |
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* |
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* http://www.linuxsampler.org |
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* |
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* This file is part of LinuxSampler and released under the same terms. |
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* See README file for details. |
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*/ |
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|
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/* Parser for NKSP real-time instrument script language. */ |
11 |
|
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%{ |
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#define YYERROR_VERBOSE 1 |
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#include "parser_shared.h" |
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#include <string> |
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#include <map> |
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using namespace LinuxSampler; |
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|
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void InstrScript_error(YYLTYPE* locp, LinuxSampler::ParserContext* context, const char* err); |
20 |
void InstrScript_warning(YYLTYPE* locp, LinuxSampler::ParserContext* context, const char* txt); |
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int InstrScript_tnamerr(char* yyres, const char* yystr); |
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int InstrScript_lex(YYSTYPE* lvalp, YYLTYPE* llocp, void* scanner); |
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#define scanner context->scanner |
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#define PARSE_ERR(loc,txt) yyerror(&loc, context, txt) |
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#define PARSE_WRN(loc,txt) InstrScript_warning(&loc, context, txt) |
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#define yytnamerr(res,str) InstrScript_tnamerr(res, str) |
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%} |
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|
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// generate reentrant safe parser |
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%pure-parser |
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%parse-param { LinuxSampler::ParserContext* context } |
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%lex-param { void* scanner } |
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// avoid symbol collision with other (i.e. future) auto generated (f)lex scanners |
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// (NOTE: "=" is deprecated here with Bison 3.x, however removing it would cause an error with Bison 2.x) |
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%name-prefix="InstrScript_" |
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%locations |
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%defines |
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%error-verbose |
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|
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%token <iValue> INTEGER "integer literal" |
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%token <sValue> STRING "string literal" |
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%token <sValue> IDENTIFIER "function name" |
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%token <sValue> VARIABLE "variable name" |
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%token ON "keyword 'on'" |
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%token END "keyword 'end'" |
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%token INIT "keyword 'init'" |
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%token NOTE "keyword 'note'" |
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%token RELEASE "keyword 'release'" |
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%token CONTROLLER "keyword 'controller'" |
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%token DECLARE "keyword 'declare'" |
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%token ASSIGNMENT "operator ':='" |
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%token CONST_ "keyword 'const'" |
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%token POLYPHONIC "keyword 'polyphonic'" |
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%token WHILE "keyword 'while'" |
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%token IF "keyword 'if'" |
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%token ELSE "keyword 'else'" |
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%token SELECT "keyword 'select'" |
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%token CASE "keyword 'case'" |
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%token TO "keyword 'to'" |
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%token OR "operator 'or'" |
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%token AND "operator 'and'" |
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%token NOT "operator 'not'" |
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%token BITWISE_OR "bitwise operator '.or.'" |
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%token BITWISE_AND "bitwise operator '.and.'" |
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%token BITWISE_NOT "bitwise operator '.not.'" |
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%token FUNCTION "keyword 'function'" |
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%token CALL "keyword 'call'" |
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%token MOD "operator 'mod'" |
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%token LE "operator '<='" |
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%token GE "operator '>='" |
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%token END_OF_FILE 0 "end of file" |
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|
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%type <nEventHandlers> script sections |
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%type <nEventHandler> section eventhandler |
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%type <nStatements> statements opt_statements userfunctioncall |
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%type <nStatement> statement assignment |
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%type <nFunctionCall> functioncall |
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%type <nArgs> args |
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%type <nExpression> arg expr logical_or_expr logical_and_expr bitwise_or_expr bitwise_and_expr rel_expr add_expr mul_expr unary_expr concat_expr |
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%type <nCaseBranch> caseclause |
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%type <nCaseBranches> caseclauses |
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|
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%start script |
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|
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%% |
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|
87 |
script: |
88 |
sections { |
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$$ = context->handlers = $1; |
90 |
} |
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|
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sections: |
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section { |
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$$ = new EventHandlers(); |
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if ($1) $$->add($1); |
96 |
} |
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| sections section { |
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$$ = $1; |
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if ($2) $$->add($2); |
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} |
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|
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section: |
103 |
function_declaration { |
104 |
$$ = EventHandlerRef(); |
105 |
} |
106 |
| eventhandler { |
107 |
$$ = $1; |
108 |
} |
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|
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eventhandler: |
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ON NOTE opt_statements END ON { |
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if (context->onNote) |
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PARSE_ERR(@2, "Redeclaration of 'note' event handler."); |
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context->onNote = new OnNote($3); |
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$$ = context->onNote; |
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} |
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| ON INIT opt_statements END ON { |
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if (context->onInit) |
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PARSE_ERR(@2, "Redeclaration of 'init' event handler."); |
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context->onInit = new OnInit($3); |
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$$ = context->onInit; |
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} |
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| ON RELEASE opt_statements END ON { |
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if (context->onRelease) |
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PARSE_ERR(@2, "Redeclaration of 'release' event handler."); |
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context->onRelease = new OnRelease($3); |
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$$ = context->onRelease; |
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} |
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| ON CONTROLLER opt_statements END ON { |
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if (context->onController) |
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PARSE_ERR(@2, "Redeclaration of 'controller' event handler."); |
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context->onController = new OnController($3); |
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$$ = context->onController; |
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} |
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|
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function_declaration: |
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FUNCTION IDENTIFIER opt_statements END FUNCTION { |
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const char* name = $2; |
139 |
if (context->functionProvider->functionByName(name)) { |
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PARSE_ERR(@2, (String("There is already a built-in function with name '") + name + "'.").c_str()); |
141 |
} else if (context->userFunctionByName(name)) { |
142 |
PARSE_ERR(@2, (String("There is already a user defined function with name '") + name + "'.").c_str()); |
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} else { |
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context->userFnTable[name] = $3; |
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} |
146 |
} |
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|
148 |
opt_statements: |
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/* epsilon (empty argument) */ { |
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$$ = new Statements(); |
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} |
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| statements { |
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$$ = $1; |
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} |
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|
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statements: |
157 |
statement { |
158 |
$$ = new Statements(); |
159 |
if ($1) { |
160 |
if (!isNoOperation($1)) $$->add($1); // filter out NoOperation statements |
161 |
} else |
162 |
PARSE_WRN(@1, "Not a statement."); |
163 |
} |
164 |
| statements statement { |
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$$ = $1; |
166 |
if ($2) { |
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if (!isNoOperation($2)) $$->add($2); // filter out NoOperation statements |
168 |
} else |
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PARSE_WRN(@2, "Not a statement."); |
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} |
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|
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statement: |
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functioncall { |
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$$ = $1; |
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} |
176 |
| userfunctioncall { |
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$$ = $1; |
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} |
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| DECLARE VARIABLE { |
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const char* name = $2; |
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//printf("declared var '%s'\n", name); |
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if (context->variableByName(name)) |
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PARSE_ERR(@2, (String("Redeclaration of variable '") + name + "'.").c_str()); |
184 |
if (name[0] == '@') { |
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context->vartable[name] = new StringVariable(context); |
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$$ = new NoOperation; |
187 |
} else { |
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context->vartable[name] = new IntVariable(context); |
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$$ = new NoOperation; |
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} |
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} |
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| DECLARE POLYPHONIC VARIABLE { |
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const char* name = $3; |
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//printf("declared polyphonic var '%s'\n", name); |
195 |
if (context->variableByName(name)) |
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PARSE_ERR(@3, (String("Redeclaration of variable '") + name + "'.").c_str()); |
197 |
if (name[0] != '$') { |
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PARSE_ERR(@3, "Polyphonic variables may only be declared as integers."); |
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$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
200 |
} else { |
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context->vartable[name] = new PolyphonicIntVariable(context); |
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$$ = new NoOperation; |
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} |
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} |
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| DECLARE VARIABLE ASSIGNMENT expr { |
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const char* name = $2; |
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//printf("declared assign var '%s'\n", name); |
208 |
if (context->variableByName(name)) |
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PARSE_ERR(@2, (String("Redeclaration of variable '") + name + "'.").c_str()); |
210 |
if ($4->exprType() == STRING_EXPR) { |
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if (name[0] == '$') |
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PARSE_WRN(@2, (String("Variable '") + name + "' declared as integer, string expression assigned though.").c_str()); |
213 |
StringExprRef expr = $4; |
214 |
if (expr->isConstExpr()) { |
215 |
const String s = expr->evalStr(); |
216 |
StringVariableRef var = new StringVariable(context); |
217 |
context->vartable[name] = var; |
218 |
$$ = new Assignment(var, new StringLiteral(s)); |
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} else { |
220 |
StringVariableRef var = new StringVariable(context); |
221 |
context->vartable[name] = var; |
222 |
$$ = new Assignment(var, expr); |
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} |
224 |
} else { |
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if (name[0] == '@') |
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PARSE_WRN(@2, (String("Variable '") + name + "' declared as string, integer expression assigned though.").c_str()); |
227 |
IntExprRef expr = $4; |
228 |
if (expr->isConstExpr()) { |
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const int i = expr->evalInt(); |
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IntVariableRef var = new IntVariable(context); |
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context->vartable[name] = var; |
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$$ = new Assignment(var, new IntLiteral(i)); |
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} else { |
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IntVariableRef var = new IntVariable(context); |
235 |
context->vartable[name] = var; |
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$$ = new Assignment(var, expr); |
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} |
238 |
} |
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} |
240 |
| DECLARE VARIABLE '[' expr ']' { |
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//printf("declare array without args\n"); |
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const char* name = $2; |
243 |
if (!$4->isConstExpr()) { |
244 |
PARSE_ERR(@4, (String("Array variable '") + name + "' must be declared with constant array size.").c_str()); |
245 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
246 |
} else if ($4->exprType() != INT_EXPR) { |
247 |
PARSE_ERR(@4, (String("Size of array variable '") + name + "' declared with non integer expression.").c_str()); |
248 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
249 |
} else if (context->variableByName(name)) { |
250 |
PARSE_ERR(@2, (String("Redeclaration of variable '") + name + "'.").c_str()); |
251 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
252 |
} else { |
253 |
IntExprRef expr = $4; |
254 |
int size = expr->evalInt(); |
255 |
if (size <= 0) { |
256 |
PARSE_ERR(@4, (String("Array variable '") + name + "' declared with array size " + ToString(size) + ".").c_str()); |
257 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
258 |
} else { |
259 |
context->vartable[name] = new IntArrayVariable(context, size); |
260 |
$$ = new NoOperation; |
261 |
} |
262 |
} |
263 |
} |
264 |
| DECLARE VARIABLE '[' expr ']' ASSIGNMENT '(' args ')' { |
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const char* name = $2; |
266 |
if (!$4->isConstExpr()) { |
267 |
PARSE_ERR(@4, (String("Array variable '") + name + "' must be declared with constant array size.").c_str()); |
268 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
269 |
} else if ($4->exprType() != INT_EXPR) { |
270 |
PARSE_ERR(@4, (String("Size of array variable '") + name + "' declared with non integer expression.").c_str()); |
271 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
272 |
} else if (context->variableByName(name)) { |
273 |
PARSE_ERR(@2, (String("Redeclaration of variable '") + name + "'.").c_str()); |
274 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
275 |
} else { |
276 |
IntExprRef sizeExpr = $4; |
277 |
ArgsRef args = $8; |
278 |
int size = sizeExpr->evalInt(); |
279 |
if (size <= 0) { |
280 |
PARSE_ERR(@4, (String("Array variable '") + name + "' must be declared with positive array size.").c_str()); |
281 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
282 |
} else if (args->argsCount() > size) { |
283 |
PARSE_ERR(@8, (String("Array variable '") + name + |
284 |
"' was declared with size " + ToString(size) + |
285 |
" but " + ToString(args->argsCount()) + |
286 |
" values were assigned." ).c_str()); |
287 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
288 |
} else { |
289 |
bool argsOK = true; |
290 |
for (int i = 0; i < args->argsCount(); ++i) { |
291 |
if (args->arg(i)->exprType() != INT_EXPR) { |
292 |
PARSE_ERR( |
293 |
@8, |
294 |
(String("Array variable '") + name + |
295 |
"' declared with invalid assignment values. Assigned element " + |
296 |
ToString(i+1) + " is not an integer expression.").c_str() |
297 |
); |
298 |
argsOK = false; |
299 |
break; |
300 |
} |
301 |
} |
302 |
if (argsOK) { |
303 |
context->vartable[name] = new IntArrayVariable(context, size, args); |
304 |
$$ = new NoOperation; |
305 |
} else |
306 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
307 |
} |
308 |
} |
309 |
} |
310 |
| DECLARE CONST_ VARIABLE '[' expr ']' ASSIGNMENT '(' args ')' { |
311 |
const char* name = $3; |
312 |
if (!$5->isConstExpr()) { |
313 |
PARSE_ERR(@5, (String("Array variable '") + name + "' must be declared with constant array size.").c_str()); |
314 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
315 |
} else if ($5->exprType() != INT_EXPR) { |
316 |
PARSE_ERR(@5, (String("Size of array variable '") + name + "' declared with non integer expression.").c_str()); |
317 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
318 |
} else if (context->variableByName(name)) { |
319 |
PARSE_ERR(@3, (String("Redeclaration of variable '") + name + "'.").c_str()); |
320 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
321 |
} else { |
322 |
IntExprRef sizeExpr = $5; |
323 |
ArgsRef args = $9; |
324 |
int size = sizeExpr->evalInt(); |
325 |
if (size <= 0) { |
326 |
PARSE_ERR(@5, (String("Array variable '") + name + "' must be declared with positive array size.").c_str()); |
327 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
328 |
} else if (args->argsCount() > size) { |
329 |
PARSE_ERR(@9, (String("Array variable '") + name + |
330 |
"' was declared with size " + ToString(size) + |
331 |
" but " + ToString(args->argsCount()) + |
332 |
" values were assigned." ).c_str()); |
333 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
334 |
} else { |
335 |
bool argsOK = true; |
336 |
for (int i = 0; i < args->argsCount(); ++i) { |
337 |
if (args->arg(i)->exprType() != INT_EXPR) { |
338 |
PARSE_ERR( |
339 |
@9, |
340 |
(String("Array variable '") + name + |
341 |
"' declared with invalid assignment values. Assigned element " + |
342 |
ToString(i+1) + " is not an integer expression.").c_str() |
343 |
); |
344 |
argsOK = false; |
345 |
break; |
346 |
} |
347 |
if (!args->arg(i)->isConstExpr()) { |
348 |
PARSE_ERR( |
349 |
@9, |
350 |
(String("const array variable '") + name + |
351 |
"' must be defined with const values. Assigned element " + |
352 |
ToString(i+1) + " is not a const expression though.").c_str() |
353 |
); |
354 |
argsOK = false; |
355 |
break; |
356 |
} |
357 |
} |
358 |
if (argsOK) { |
359 |
context->vartable[name] = new IntArrayVariable(context, size, args, true); |
360 |
$$ = new NoOperation; |
361 |
} else |
362 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
363 |
} |
364 |
} |
365 |
} |
366 |
| DECLARE CONST_ VARIABLE ASSIGNMENT expr { |
367 |
const char* name = $3; |
368 |
if ($5->exprType() == STRING_EXPR) { |
369 |
if (name[0] == '$') |
370 |
PARSE_WRN(@5, "Variable declared as integer, string expression assigned though."); |
371 |
String s; |
372 |
StringExprRef expr = $5; |
373 |
if (expr->isConstExpr()) |
374 |
s = expr->evalStr(); |
375 |
else |
376 |
PARSE_ERR(@5, (String("Assignment to const string variable '") + name + "' requires const expression.").c_str()); |
377 |
ConstStringVariableRef var = new ConstStringVariable(context, s); |
378 |
context->vartable[name] = var; |
379 |
//$$ = new Assignment(var, new StringLiteral(s)); |
380 |
$$ = new NoOperation(); |
381 |
} else { |
382 |
if (name[0] == '@') |
383 |
PARSE_WRN(@5, "Variable declared as string, integer expression assigned though."); |
384 |
int i = 0; |
385 |
IntExprRef expr = $5; |
386 |
if (expr->isConstExpr()) |
387 |
i = expr->evalInt(); |
388 |
else |
389 |
PARSE_ERR(@5, (String("Assignment to const integer variable '") + name + "' requires const expression.").c_str()); |
390 |
ConstIntVariableRef var = new ConstIntVariable(i); |
391 |
context->vartable[name] = var; |
392 |
//$$ = new Assignment(var, new IntLiteral(i)); |
393 |
$$ = new NoOperation(); |
394 |
} |
395 |
} |
396 |
| assignment { |
397 |
$$ = $1; |
398 |
} |
399 |
| WHILE '(' expr ')' opt_statements END WHILE { |
400 |
if ($3->exprType() == INT_EXPR) { |
401 |
$$ = new While($3, $5); |
402 |
} else { |
403 |
PARSE_ERR(@3, "Condition for 'while' loops must be integer expression."); |
404 |
$$ = new While(new IntLiteral(0), $5); |
405 |
} |
406 |
} |
407 |
| IF '(' expr ')' opt_statements ELSE opt_statements END IF { |
408 |
$$ = new If($3, $5, $7); |
409 |
} |
410 |
| IF '(' expr ')' opt_statements END IF { |
411 |
$$ = new If($3, $5); |
412 |
} |
413 |
| SELECT expr caseclauses END SELECT { |
414 |
if ($2->exprType() == INT_EXPR) { |
415 |
$$ = new SelectCase($2, $3); |
416 |
} else { |
417 |
PARSE_ERR(@2, "Statement 'select' can only by applied to integer expressions."); |
418 |
$$ = new SelectCase(new IntLiteral(0), $3); |
419 |
} |
420 |
} |
421 |
|
422 |
caseclauses: |
423 |
caseclause { |
424 |
$$ = CaseBranches(); |
425 |
$$.push_back($1); |
426 |
} |
427 |
| caseclauses caseclause { |
428 |
$$ = $1; |
429 |
$$.push_back($2); |
430 |
} |
431 |
|
432 |
caseclause: |
433 |
CASE INTEGER opt_statements { |
434 |
$$ = CaseBranch(); |
435 |
$$.from = new IntLiteral($2); |
436 |
$$.statements = $3; |
437 |
} |
438 |
| CASE INTEGER TO INTEGER opt_statements { |
439 |
$$ = CaseBranch(); |
440 |
$$.from = new IntLiteral($2); |
441 |
$$.to = new IntLiteral($4); |
442 |
$$.statements = $5; |
443 |
} |
444 |
|
445 |
userfunctioncall: |
446 |
CALL IDENTIFIER { |
447 |
const char* name = $2; |
448 |
StatementsRef fn = context->userFunctionByName(name); |
449 |
if (context->functionProvider->functionByName(name)) { |
450 |
PARSE_ERR(@1, (String("Keyword 'call' must only be used for user defined functions, not for any built-in function like '") + name + "'.").c_str()); |
451 |
$$ = StatementsRef(); |
452 |
} else if (!fn) { |
453 |
PARSE_ERR(@2, (String("No user defined function with name '") + name + "'.").c_str()); |
454 |
$$ = StatementsRef(); |
455 |
} else { |
456 |
$$ = fn; |
457 |
} |
458 |
} |
459 |
|
460 |
functioncall: |
461 |
IDENTIFIER '(' args ')' { |
462 |
const char* name = $1; |
463 |
//printf("function call of '%s' with args\n", name); |
464 |
ArgsRef args = $3; |
465 |
VMFunction* fn = context->functionProvider->functionByName(name); |
466 |
if (context->userFunctionByName(name)) { |
467 |
PARSE_ERR(@1, (String("Missing 'call' keyword before user defined function name '") + name + "'.").c_str()); |
468 |
$$ = new FunctionCall(name, args, NULL); |
469 |
} else if (!fn) { |
470 |
PARSE_ERR(@1, (String("No built-in function with name '") + name + "'.").c_str()); |
471 |
$$ = new FunctionCall(name, args, NULL); |
472 |
} else if (args->argsCount() < fn->minRequiredArgs()) { |
473 |
PARSE_ERR(@3, (String("Built-in function '") + name + "' requires at least " + ToString(fn->minRequiredArgs()) + " arguments.").c_str()); |
474 |
$$ = new FunctionCall(name, args, NULL); |
475 |
} else if (args->argsCount() > fn->maxAllowedArgs()) { |
476 |
PARSE_ERR(@3, (String("Built-in function '") + name + "' accepts max. " + ToString(fn->maxAllowedArgs()) + " arguments.").c_str()); |
477 |
$$ = new FunctionCall(name, args, NULL); |
478 |
} else { |
479 |
bool argsOK = true; |
480 |
for (int i = 0; i < args->argsCount(); ++i) { |
481 |
if (args->arg(i)->exprType() != fn->argType(i) && !fn->acceptsArgType(i, args->arg(i)->exprType())) { |
482 |
PARSE_ERR(@3, (String("Argument ") + ToString(i+1) + " of built-in function '" + name + "' expects " + typeStr(fn->argType(i)) + " type, but type " + typeStr(args->arg(i)->exprType()) + " was given instead.").c_str()); |
483 |
argsOK = false; |
484 |
break; |
485 |
} else if (fn->modifiesArg(i) && !args->arg(i)->isModifyable()) { |
486 |
PARSE_ERR(@3, (String("Argument ") + ToString(i+1) + " of built-in function '" + name + "' expects an assignable variable.").c_str()); |
487 |
argsOK = false; |
488 |
break; |
489 |
} |
490 |
} |
491 |
$$ = new FunctionCall(name, args, argsOK ? fn : NULL); |
492 |
} |
493 |
} |
494 |
| IDENTIFIER '(' ')' { |
495 |
const char* name = $1; |
496 |
//printf("function call of '%s' (with empty args)\n", name); |
497 |
ArgsRef args = new Args; |
498 |
VMFunction* fn = context->functionProvider->functionByName(name); |
499 |
if (context->userFunctionByName(name)) { |
500 |
PARSE_ERR(@1, (String("Missing 'call' keyword before user defined function name '") + name + "'.").c_str()); |
501 |
$$ = new FunctionCall(name, args, NULL); |
502 |
} else if (!fn) { |
503 |
PARSE_ERR(@1, (String("No built-in function with name '") + name + "'.").c_str()); |
504 |
$$ = new FunctionCall(name, args, NULL); |
505 |
} else if (fn->minRequiredArgs() > 0) { |
506 |
PARSE_ERR(@3, (String("Built-in function '") + name + "' requires at least " + ToString(fn->minRequiredArgs()) + " arguments.").c_str()); |
507 |
$$ = new FunctionCall(name, args, NULL); |
508 |
} else { |
509 |
$$ = new FunctionCall(name, args, fn); |
510 |
} |
511 |
} |
512 |
| IDENTIFIER { |
513 |
const char* name = $1; |
514 |
//printf("function call of '%s' (without args)\n", name); |
515 |
ArgsRef args = new Args; |
516 |
VMFunction* fn = context->functionProvider->functionByName(name); |
517 |
if (context->userFunctionByName(name)) { |
518 |
PARSE_ERR(@1, (String("Missing 'call' keyword before user defined function name '") + name + "'.").c_str()); |
519 |
$$ = new FunctionCall(name, args, NULL); |
520 |
} else if (!fn) { |
521 |
PARSE_ERR(@1, (String("No built-in function with name '") + name + "'.").c_str()); |
522 |
$$ = new FunctionCall(name, args, NULL); |
523 |
} else if (fn->minRequiredArgs() > 0) { |
524 |
PARSE_ERR(@1, (String("Built-in function '") + name + "' requires at least " + ToString(fn->minRequiredArgs()) + " arguments.").c_str()); |
525 |
$$ = new FunctionCall(name, args, NULL); |
526 |
} else { |
527 |
$$ = new FunctionCall(name, args, fn); |
528 |
} |
529 |
} |
530 |
|
531 |
args: |
532 |
arg { |
533 |
$$ = new Args(); |
534 |
$$->add($1); |
535 |
} |
536 |
| args ',' arg { |
537 |
$$ = $1; |
538 |
$$->add($3); |
539 |
} |
540 |
|
541 |
arg: |
542 |
expr |
543 |
|
544 |
assignment: |
545 |
VARIABLE ASSIGNMENT expr { |
546 |
//printf("variable lookup with name '%s' as assignment expr\n", $1); |
547 |
const char* name = $1; |
548 |
VariableRef var = context->variableByName(name); |
549 |
if (!var) |
550 |
PARSE_ERR(@1, (String("Variable assignment: No variable declared with name '") + name + "'.").c_str()); |
551 |
else if (var->isConstExpr()) |
552 |
PARSE_ERR(@2, (String("Variable assignment: Cannot modify const variable '") + name + "'.").c_str()); |
553 |
else if (!var->isAssignable()) |
554 |
PARSE_ERR(@2, (String("Variable assignment: Variable '") + name + "' is not assignable.").c_str()); |
555 |
else if (var->exprType() != $3->exprType()) |
556 |
PARSE_ERR(@3, (String("Variable assignment: Variable '") + name + "' is of type " + typeStr(var->exprType()) + ", assignment is of type " + typeStr($3->exprType()) + " though.").c_str()); |
557 |
$$ = new Assignment(var, $3); |
558 |
} |
559 |
| VARIABLE '[' expr ']' ASSIGNMENT expr { |
560 |
const char* name = $1; |
561 |
VariableRef var = context->variableByName(name); |
562 |
if (!var) |
563 |
PARSE_ERR(@1, (String("No variable declared with name '") + name + "'.").c_str()); |
564 |
else if (var->exprType() != INT_ARR_EXPR) |
565 |
PARSE_ERR(@2, (String("Variable '") + name + "' is not an array variable.").c_str()); |
566 |
else if (var->isConstExpr()) |
567 |
PARSE_ERR(@5, (String("Variable assignment: Cannot modify const array variable '") + name + "'.").c_str()); |
568 |
else if (!var->isAssignable()) |
569 |
PARSE_ERR(@5, (String("Variable assignment: Array variable '") + name + "' is not assignable.").c_str()); |
570 |
else if ($3->exprType() != INT_EXPR) |
571 |
PARSE_ERR(@3, (String("Array variable '") + name + "' accessed with non integer expression.").c_str()); |
572 |
else if ($6->exprType() != INT_EXPR) |
573 |
PARSE_ERR(@5, (String("Value assigned to array variable '") + name + "' must be an integer expression.").c_str()); |
574 |
else if ($3->isConstExpr() && $3->asInt()->evalInt() >= ((IntArrayVariableRef)var)->arraySize()) |
575 |
PARSE_WRN(@3, (String("Index ") + ToString($3->asInt()->evalInt()) + |
576 |
" exceeds size of array variable '" + name + |
577 |
"' which was declared with size " + |
578 |
ToString(((IntArrayVariableRef)var)->arraySize()) + ".").c_str()); |
579 |
IntArrayElementRef element = new IntArrayElement(var, $3); |
580 |
$$ = new Assignment(element, $6); |
581 |
} |
582 |
|
583 |
unary_expr: |
584 |
INTEGER { |
585 |
$$ = new IntLiteral($1); |
586 |
} |
587 |
| STRING { |
588 |
$$ = new StringLiteral($1); |
589 |
} |
590 |
| VARIABLE { |
591 |
//printf("variable lookup with name '%s' as unary expr\n", $1); |
592 |
VariableRef var = context->variableByName($1); |
593 |
if (var) |
594 |
$$ = var; |
595 |
else { |
596 |
PARSE_ERR(@1, (String("No variable declared with name '") + $1 + "'.").c_str()); |
597 |
$$ = new IntLiteral(0); |
598 |
} |
599 |
} |
600 |
| VARIABLE '[' expr ']' { |
601 |
const char* name = $1; |
602 |
VariableRef var = context->variableByName(name); |
603 |
if (!var) { |
604 |
PARSE_ERR(@1, (String("No variable declared with name '") + name + "'.").c_str()); |
605 |
$$ = new IntLiteral(0); |
606 |
} else if (var->exprType() != INT_ARR_EXPR) { |
607 |
PARSE_ERR(@2, (String("Variable '") + name + "' is not an array variable.").c_str()); |
608 |
$$ = new IntLiteral(0); |
609 |
} else if ($3->exprType() != INT_EXPR) { |
610 |
PARSE_ERR(@3, (String("Array variable '") + name + "' accessed with non integer expression.").c_str()); |
611 |
$$ = new IntLiteral(0); |
612 |
} else { |
613 |
if ($3->isConstExpr() && $3->asInt()->evalInt() >= ((IntArrayVariableRef)var)->arraySize()) |
614 |
PARSE_WRN(@3, (String("Index ") + ToString($3->asInt()->evalInt()) + |
615 |
" exceeds size of array variable '" + name + |
616 |
"' which was declared with size " + |
617 |
ToString(((IntArrayVariableRef)var)->arraySize()) + ".").c_str()); |
618 |
$$ = new IntArrayElement(var, $3); |
619 |
} |
620 |
} |
621 |
| '(' expr ')' { |
622 |
$$ = $2; |
623 |
} |
624 |
| functioncall { |
625 |
$$ = $1; |
626 |
} |
627 |
| '-' unary_expr { |
628 |
$$ = new Neg($2); |
629 |
} |
630 |
| BITWISE_NOT unary_expr { |
631 |
if ($2->exprType() != INT_EXPR) { |
632 |
PARSE_ERR(@2, (String("Right operand of bitwise operator '.not.' must be an integer expression, is ") + typeStr($2->exprType()) + " though.").c_str()); |
633 |
$$ = new IntLiteral(0); |
634 |
} else { |
635 |
$$ = new BitwiseNot($2); |
636 |
} |
637 |
} |
638 |
| NOT unary_expr { |
639 |
if ($2->exprType() != INT_EXPR) { |
640 |
PARSE_ERR(@2, (String("Right operand of operator 'not' must be an integer expression, is ") + typeStr($2->exprType()) + " though.").c_str()); |
641 |
$$ = new IntLiteral(0); |
642 |
} else { |
643 |
$$ = new Not($2); |
644 |
} |
645 |
} |
646 |
|
647 |
expr: |
648 |
concat_expr |
649 |
|
650 |
concat_expr: |
651 |
logical_or_expr |
652 |
| concat_expr '&' logical_or_expr { |
653 |
ExpressionRef lhs = $1; |
654 |
ExpressionRef rhs = $3; |
655 |
if (lhs->isConstExpr() && rhs->isConstExpr()) { |
656 |
$$ = new StringLiteral( |
657 |
lhs->evalCastToStr() + rhs->evalCastToStr() |
658 |
); |
659 |
} else { |
660 |
$$ = new ConcatString(lhs, rhs); |
661 |
} |
662 |
} |
663 |
|
664 |
logical_or_expr: |
665 |
logical_and_expr |
666 |
| logical_or_expr OR logical_and_expr { |
667 |
ExpressionRef lhs = $1; |
668 |
ExpressionRef rhs = $3; |
669 |
if (lhs->exprType() != INT_EXPR) { |
670 |
PARSE_ERR(@1, (String("Left operand of operator 'or' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
671 |
$$ = new IntLiteral(0); |
672 |
} else if (rhs->exprType() != INT_EXPR) { |
673 |
PARSE_ERR(@3, (String("Right operand of operator 'or' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
674 |
$$ = new IntLiteral(0); |
675 |
} else { |
676 |
$$ = new Or(lhs, rhs); |
677 |
} |
678 |
} |
679 |
|
680 |
logical_and_expr: |
681 |
bitwise_or_expr { |
682 |
$$ = $1; |
683 |
} |
684 |
| logical_and_expr AND bitwise_or_expr { |
685 |
ExpressionRef lhs = $1; |
686 |
ExpressionRef rhs = $3; |
687 |
if (lhs->exprType() != INT_EXPR) { |
688 |
PARSE_ERR(@1, (String("Left operand of operator 'and' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
689 |
$$ = new IntLiteral(0); |
690 |
} else if (rhs->exprType() != INT_EXPR) { |
691 |
PARSE_ERR(@3, (String("Right operand of operator 'and' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
692 |
$$ = new IntLiteral(0); |
693 |
} else { |
694 |
$$ = new And(lhs, rhs); |
695 |
} |
696 |
} |
697 |
|
698 |
bitwise_or_expr: |
699 |
bitwise_and_expr |
700 |
| bitwise_or_expr BITWISE_OR bitwise_and_expr { |
701 |
ExpressionRef lhs = $1; |
702 |
ExpressionRef rhs = $3; |
703 |
if (lhs->exprType() != INT_EXPR) { |
704 |
PARSE_ERR(@1, (String("Left operand of bitwise operator '.or.' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
705 |
$$ = new IntLiteral(0); |
706 |
} else if (rhs->exprType() != INT_EXPR) { |
707 |
PARSE_ERR(@3, (String("Right operand of bitwise operator '.or.' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
708 |
$$ = new IntLiteral(0); |
709 |
} else { |
710 |
$$ = new BitwiseOr(lhs, rhs); |
711 |
} |
712 |
} |
713 |
|
714 |
bitwise_and_expr: |
715 |
rel_expr { |
716 |
$$ = $1; |
717 |
} |
718 |
| bitwise_and_expr BITWISE_AND rel_expr { |
719 |
ExpressionRef lhs = $1; |
720 |
ExpressionRef rhs = $3; |
721 |
if (lhs->exprType() != INT_EXPR) { |
722 |
PARSE_ERR(@1, (String("Left operand of bitwise operator '.and.' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
723 |
$$ = new IntLiteral(0); |
724 |
} else if (rhs->exprType() != INT_EXPR) { |
725 |
PARSE_ERR(@3, (String("Right operand of bitwise operator '.and.' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
726 |
$$ = new IntLiteral(0); |
727 |
} else { |
728 |
$$ = new BitwiseAnd(lhs, rhs); |
729 |
} |
730 |
} |
731 |
|
732 |
rel_expr: |
733 |
add_expr |
734 |
| rel_expr '<' add_expr { |
735 |
ExpressionRef lhs = $1; |
736 |
ExpressionRef rhs = $3; |
737 |
if (lhs->exprType() != INT_EXPR) { |
738 |
PARSE_ERR(@1, (String("Left operand of operator '<' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
739 |
$$ = new IntLiteral(0); |
740 |
} else if (rhs->exprType() != INT_EXPR) { |
741 |
PARSE_ERR(@3, (String("Right operand of operator '<' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
742 |
$$ = new IntLiteral(0); |
743 |
} else { |
744 |
$$ = new Relation(lhs, Relation::LESS_THAN, rhs); |
745 |
} |
746 |
} |
747 |
| rel_expr '>' add_expr { |
748 |
ExpressionRef lhs = $1; |
749 |
ExpressionRef rhs = $3; |
750 |
if (lhs->exprType() != INT_EXPR) { |
751 |
PARSE_ERR(@1, (String("Left operand of operator '>' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
752 |
$$ = new IntLiteral(0); |
753 |
} else if (rhs->exprType() != INT_EXPR) { |
754 |
PARSE_ERR(@3, (String("Right operand of operator '>' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
755 |
$$ = new IntLiteral(0); |
756 |
} else { |
757 |
$$ = new Relation(lhs, Relation::GREATER_THAN, rhs); |
758 |
} |
759 |
} |
760 |
| rel_expr LE add_expr { |
761 |
ExpressionRef lhs = $1; |
762 |
ExpressionRef rhs = $3; |
763 |
if (lhs->exprType() != INT_EXPR) { |
764 |
PARSE_ERR(@1, (String("Left operand of operator '<=' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
765 |
$$ = new IntLiteral(0); |
766 |
} else if (rhs->exprType() != INT_EXPR) { |
767 |
PARSE_ERR(@3, (String("Right operand of operator '<=' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
768 |
$$ = new IntLiteral(0); |
769 |
} else { |
770 |
$$ = new Relation(lhs, Relation::LESS_OR_EQUAL, rhs); |
771 |
} |
772 |
} |
773 |
| rel_expr GE add_expr { |
774 |
ExpressionRef lhs = $1; |
775 |
ExpressionRef rhs = $3; |
776 |
if (lhs->exprType() != INT_EXPR) { |
777 |
PARSE_ERR(@1, (String("Left operand of operator '>=' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
778 |
$$ = new IntLiteral(0); |
779 |
} else if (rhs->exprType() != INT_EXPR) { |
780 |
PARSE_ERR(@3, (String("Right operand of operator '>=' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
781 |
$$ = new IntLiteral(0); |
782 |
} else { |
783 |
$$ = new Relation(lhs, Relation::GREATER_OR_EQUAL, rhs); |
784 |
} |
785 |
} |
786 |
| rel_expr '=' add_expr { |
787 |
$$ = new Relation($1, Relation::EQUAL, $3); |
788 |
} |
789 |
| rel_expr '#' add_expr { |
790 |
$$ = new Relation($1, Relation::NOT_EQUAL, $3); |
791 |
} |
792 |
|
793 |
add_expr: |
794 |
mul_expr |
795 |
| add_expr '+' mul_expr { |
796 |
ExpressionRef lhs = $1; |
797 |
ExpressionRef rhs = $3; |
798 |
if (lhs->exprType() != INT_EXPR) { |
799 |
PARSE_ERR(@1, (String("Left operand of operator '+' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
800 |
$$ = new IntLiteral(0); |
801 |
} else if (rhs->exprType() != INT_EXPR) { |
802 |
PARSE_ERR(@3, (String("Right operand of operator '+' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
803 |
$$ = new IntLiteral(0); |
804 |
} else { |
805 |
$$ = new Add(lhs,rhs); |
806 |
} |
807 |
} |
808 |
| add_expr '-' mul_expr { |
809 |
ExpressionRef lhs = $1; |
810 |
ExpressionRef rhs = $3; |
811 |
if (lhs->exprType() != INT_EXPR) { |
812 |
PARSE_ERR(@1, (String("Left operand of operator '-' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
813 |
$$ = new IntLiteral(0); |
814 |
} else if (rhs->exprType() != INT_EXPR) { |
815 |
PARSE_ERR(@3, (String("Right operand of operator '-' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
816 |
$$ = new IntLiteral(0); |
817 |
} else { |
818 |
$$ = new Sub(lhs,rhs); |
819 |
} |
820 |
} |
821 |
|
822 |
mul_expr: |
823 |
unary_expr |
824 |
| mul_expr '*' unary_expr { |
825 |
ExpressionRef lhs = $1; |
826 |
ExpressionRef rhs = $3; |
827 |
if (lhs->exprType() != INT_EXPR) { |
828 |
PARSE_ERR(@1, (String("Left operand of operator '*' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
829 |
$$ = new IntLiteral(0); |
830 |
} else if (rhs->exprType() != INT_EXPR) { |
831 |
PARSE_ERR(@3, (String("Right operand of operator '*' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
832 |
$$ = new IntLiteral(0); |
833 |
} else { |
834 |
$$ = new Mul(lhs,rhs); |
835 |
} |
836 |
} |
837 |
| mul_expr '/' unary_expr { |
838 |
ExpressionRef lhs = $1; |
839 |
ExpressionRef rhs = $3; |
840 |
if (lhs->exprType() != INT_EXPR) { |
841 |
PARSE_ERR(@1, (String("Left operand of operator '/' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
842 |
$$ = new IntLiteral(0); |
843 |
} else if (rhs->exprType() != INT_EXPR) { |
844 |
PARSE_ERR(@3, (String("Right operand of operator '/' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
845 |
$$ = new IntLiteral(0); |
846 |
} else { |
847 |
$$ = new Div(lhs,rhs); |
848 |
} |
849 |
} |
850 |
| mul_expr MOD unary_expr { |
851 |
ExpressionRef lhs = $1; |
852 |
ExpressionRef rhs = $3; |
853 |
if (lhs->exprType() != INT_EXPR) { |
854 |
PARSE_ERR(@1, (String("Left operand of modulo operator must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
855 |
$$ = new IntLiteral(0); |
856 |
} else if (rhs->exprType() != INT_EXPR) { |
857 |
PARSE_ERR(@3, (String("Right operand of modulo operator must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
858 |
$$ = new IntLiteral(0); |
859 |
} else { |
860 |
$$ = new Mod(lhs,rhs); |
861 |
} |
862 |
} |
863 |
|
864 |
%% |
865 |
|
866 |
void InstrScript_error(YYLTYPE* locp, LinuxSampler::ParserContext* context, const char* err) { |
867 |
//fprintf(stderr, "%d: %s\n", locp->first_line, err); |
868 |
context->addErr(locp->first_line, locp->last_line, locp->first_column+1, locp->last_column+1, err); |
869 |
} |
870 |
|
871 |
void InstrScript_warning(YYLTYPE* locp, LinuxSampler::ParserContext* context, const char* txt) { |
872 |
//fprintf(stderr, "WRN %d: %s\n", locp->first_line, txt); |
873 |
context->addWrn(locp->first_line, locp->last_line, locp->first_column+1, locp->last_column+1, txt); |
874 |
} |
875 |
|
876 |
/// Custom implementation of yytnamerr() to ensure quotation is always stripped from token names before printing them to error messages. |
877 |
int InstrScript_tnamerr(char* yyres, const char* yystr) { |
878 |
if (*yystr == '"') { |
879 |
int yyn = 0; |
880 |
char const *yyp = yystr; |
881 |
for (;;) |
882 |
switch (*++yyp) |
883 |
{ |
884 |
/* |
885 |
case '\'': |
886 |
case ',': |
887 |
goto do_not_strip_quotes; |
888 |
|
889 |
case '\\': |
890 |
if (*++yyp != '\\') |
891 |
goto do_not_strip_quotes; |
892 |
*/ |
893 |
/* Fall through. */ |
894 |
default: |
895 |
if (yyres) |
896 |
yyres[yyn] = *yyp; |
897 |
yyn++; |
898 |
break; |
899 |
|
900 |
case '"': |
901 |
if (yyres) |
902 |
yyres[yyn] = '\0'; |
903 |
return yyn; |
904 |
} |
905 |
/* |
906 |
do_not_strip_quotes: ; |
907 |
*/ |
908 |
} |
909 |
|
910 |
if (! yyres) |
911 |
return (int) yystrlen (yystr); |
912 |
|
913 |
return int( yystpcpy (yyres, yystr) - yyres ); |
914 |
} |