parser: implement APPLY gate register

2 years ago · 75f7493420
3 changed files with 28 additions and 7 deletions
--- a/TODOS.txt
+++ b/TODOS.txt
@ -4,12 +4,10 @@
 - support example1
 - [x] FORMGATE U HAD ID
 - [x] need to form hashmap for storing variables
- - [ ] APPLY U R
+ - [x] APPLY U R
 - [ ] harder:
 - [ ] SELECT S1 R2 0 1 (0-1 is a range, S1 is where it's saved and R2 is the register)
- - [ ] MEASURE RES S1 (measure S1) (porbably hardest to support.)
- [ ] REPL stuff:
- - [ ] introspection of registers/gates
- - [ ] help command
-Notes;
- we will drop ADD for now because too complex.
+ - [ ] MEASURE RES S1 (measure S1) (probably hardest to support.)
+- [x] REPL stuff:
+ - [x] introspection of registers
+ - [x] help command
--- a/include/parse.h
+++ b/include/parse.h
@ -15,6 +15,7 @@ int execute_cmd(char **args);
 int sqint_init(char **args);
 int sqint_formgate(char **args);
 int sqint_peek(char **args);
+int sqint_apply(char **args);
 int shell_help(char **args);

 unordered_map<string, QuantumGate> gateHashmap;
@ -24,6 +25,7 @@ const char *tokens[] = {
 "INIT",
 "FORMGATE",
 "PEEK",
+ "APPLY",
 "help",
 };

@ -31,5 +33,6 @@ int (*builtin_func[])(char **) = {
 &sqint_init,
 &sqint_formgate,
 &sqint_peek,
+ &sqint_apply,
 &shell_help,
 };
--- a/src/parse.cpp
+++ b/src/parse.cpp
@ -116,6 +116,25 @@ int sqint_peek(char **args) {
 }
 }

+int sqint_apply(char **args) {
+ if (args[1] == NULL || args[2] == NULL) {
+ fprintf(stderr, "bad input");
+ return 1;
+ } else {
+ auto gateIter = gateHashmap.find(args[1]);
+ if (gateIter == gateHashmap.end()) {
+ printf("Couldn't find gate variable.\n");
+ }
+ auto registerIter = quantumRegisterHashmap.find(args[2]);
+ if (registerIter == quantumRegisterHashmap.end()) {
+ printf("Couldn't find register variable.\n");
+ }
+ registerIter->second.applyGateToSystem(gateIter->second);
+ registerIter->second.printAmplitudes();
+ return 1;
+ }
+}
+
 int sqint_formgate(char **args) {
 if (args[1] == NULL || args[2] == NULL || args[3] == NULL) {
 fprintf(stderr, "bad input");
@ -141,6 +160,7 @@ int shell_help(char **args) {
 printf("To initialize a register use INIT REG QUBITSIZE INITBIT\n");
 printf("To form a gate use FORMGATE VAR GATE1 GATE2\n");
 printf("To peek at a register use PEEK REGISTERNAME\n");
+ printf("To apply a register to a register use APPLY GATE REGISTER\n");
 return 1;
 }