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TegraExplorer/source/script/parser.c
2021-01-04 23:42:26 +01:00

130 lines
No EOL
3.6 KiB
C

#include "args.h"
#include "types.h"
#include "variables.h"
#include "lexer.h"
#include "../gfx/gfx.h"
#include "../utils/utils.h"
#include <mem/heap.h>
#include "../hid/hid.h"
#define scriptResultCreate(resCode, nearToken) (scriptResult_t) {resCode, nearToken, 1}
#define scriptResultCreateLen(resCode, nearToken, len) (scriptResult_t) {resCode, nearToken, len}
scriptResult_t runFunction(scriptCtx_t* ctx, u32 len) {
lexarToken_t* tokens = vecGetArray(lexarToken_t*, ctx->script);
Variable_t res = solveEquation(ctx, &tokens[ctx->startEquation], len, 1);
if (res.varType == ErrType) {
return scriptResultCreateLen(res.integerType, &tokens[ctx->startEquation], len);
}
return scriptResultCreate(0, 0);
}
#define RUNFUNCWITHPANIC(ctx, len) scriptResult_t res = runFunction(ctx, len); if (res.resCode != 0) return res
static inline int checkIfVar(u8 token) {
return (token == StrLit || token == IntLit || token == Variable || token == RSBracket || token == ArrayVariable);
}
scriptResult_t mainLoop(scriptCtx_t* ctx) {
ctx->startEquation = 0;
lexarToken_t* lexArr = vecGetArray(lexarToken_t*, ctx->script);
for (ctx->curPos = 0; ctx->curPos < ctx->script.count; ctx->curPos++) {
u32 i = ctx->curPos;
lexarToken_t curToken = lexArr[i];
if (curToken.token == EquationSeperator) {
RUNFUNCWITHPANIC(ctx, ctx->curPos - ctx->startEquation);
ctx->startEquation = ctx->curPos + 1;
}
else if (curToken.token == FunctionAssignment) {
setCurIndentInstruction(ctx, 1, 0, -1);
dict_t x = newDict(CpyStr(curToken.text), newVar(JumpType, 0, .integerType = ctx->curPos + 1));
vecAddElement(&ctx->varDict, x);
}
else if (curToken.token == LCBracket) {
indentInstructor_t* ins = getCurIndentInstruction(ctx);
if (ins->active) {
if (ins->skip) {
int distance = distanceBetweenTokens(&lexArr[i + 1], ctx->script.count - i - 1, LCBracket, RCBracket);
if (distance < 0)
return scriptResultCreate(ERRSYNTAX, &lexArr[i]);
ctx->curPos += distance + 1;
}
else
ctx->indentIndex++;
}
else
return scriptResultCreate(ERRINACTIVEINDENT, &lexArr[i]);
ctx->startEquation = ctx->curPos + 1;
}
else if (curToken.token == RCBracket) {
ctx->indentIndex--;
indentInstructor_t* ins = getCurIndentInstruction(ctx);
if (ins->active && ins->jump) {
ctx->curPos = ins->jumpLoc - 1;
}
ins->active = 0;
ctx->startEquation = ctx->curPos + 1;
}
}
return scriptResultCreate(0, 0);
}
void printToken(lexarToken_t* token) {
switch (token->token) {
case Variable:
case ArrayVariable:
case Function:
gfx_printf("%s", token->text);
break;
case FunctionAssignment:
case VariableAssignment:
case ArrayVariableAssignment:
gfx_printf("%s=", token->text);
break;
case StrLit:
//printf("%d: '%s'\n", vec.tokens[i].token, vec.tokens[i].text);
gfx_printf("\"%s\"", token->text);
break;
case IntLit:
//printf("%d: %d\n", vec.tokens[i].token, vec.tokens[i].val);
gfx_printf("%d", token->val);
break;
default:
//printf("%d: %c\n", vec.tokens[i].token, lexarDebugGetTokenC(vec.tokens[i].token));
gfx_printf("%c", lexarDebugGetTokenC(token->token));
break;
}
}
char *ErrorText[] = {
"Bad operator",
"Double not",
"Syntax err",
"Invalid type",
"No var",
"No func",
"Inactive indent",
"Div by 0",
"Func fail"
};
void printError(scriptResult_t res) {
if (res.resCode) {
if (res.resCode == ERRESCSCRIPT)
return;
gfx_printf("Error found! %s\nNear: ", ErrorText[res.resCode - 1]);
for (int i = 0; i < res.len; i++) {
printToken(&res.nearToken[i]);
}
gfx_printf("\nPress any key to exit");
hidWait();
}
}