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assignment to constant error

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Wolfgang (Blub) Bumiller 2012-11-25 19:37:31 +01:00
parent 39f572fe99
commit 353b1f945f
1 changed files with 21 additions and 0 deletions
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21
parser.c
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@ -940,6 +940,9 @@ static bool parser_sy_pop(parser_t *parser, shunt *sy)
parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1); parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
} }
} }
if (ast_istype(exprs[0], ast_value) && asvalue[0]->constant) {
parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
}
out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]); out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
break; break;
case opid3('+','+','P'): case opid3('+','+','P'):
@ -954,6 +957,9 @@ static bool parser_sy_pop(parser_t *parser, shunt *sy)
addop = INSTR_ADD_F; addop = INSTR_ADD_F;
else else
addop = INSTR_SUB_F; addop = INSTR_SUB_F;
if (ast_istype(exprs[0], ast_value) && asvalue[0]->constant) {
parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
}
if (ast_istype(exprs[0], ast_entfield)) { if (ast_istype(exprs[0], ast_entfield)) {
out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop, out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
exprs[0], exprs[0],
@ -979,6 +985,9 @@ static bool parser_sy_pop(parser_t *parser, shunt *sy)
addop = INSTR_SUB_F; addop = INSTR_SUB_F;
subop = INSTR_ADD_F; subop = INSTR_ADD_F;
} }
if (ast_istype(exprs[0], ast_value) && asvalue[0]->constant) {
parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
}
if (ast_istype(exprs[0], ast_entfield)) { if (ast_istype(exprs[0], ast_entfield)) {
out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop, out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
exprs[0], exprs[0],
@ -1005,6 +1014,9 @@ static bool parser_sy_pop(parser_t *parser, shunt *sy)
ty1, ty2); ty1, ty2);
return false; return false;
} }
if (ast_istype(exprs[0], ast_value) && asvalue[0]->constant) {
parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
}
if (ast_istype(exprs[0], ast_entfield)) if (ast_istype(exprs[0], ast_entfield))
assignop = type_storep_instr[exprs[0]->expression.vtype]; assignop = type_storep_instr[exprs[0]->expression.vtype];
else else
@ -1039,6 +1051,9 @@ static bool parser_sy_pop(parser_t *parser, shunt *sy)
ty1, ty2); ty1, ty2);
return false; return false;
} }
if (ast_istype(exprs[0], ast_value) && asvalue[0]->constant) {
parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
}
if (ast_istype(exprs[0], ast_entfield)) if (ast_istype(exprs[0], ast_entfield))
assignop = type_storep_instr[exprs[0]->expression.vtype]; assignop = type_storep_instr[exprs[0]->expression.vtype];
else else
@ -1080,6 +1095,9 @@ static bool parser_sy_pop(parser_t *parser, shunt *sy)
ty1, ty2); ty1, ty2);
return false; return false;
} }
if (ast_istype(exprs[0], ast_value) && asvalue[0]->constant) {
parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
}
if (ast_istype(exprs[0], ast_entfield)) if (ast_istype(exprs[0], ast_entfield))
assignop = type_storep_instr[exprs[0]->expression.vtype]; assignop = type_storep_instr[exprs[0]->expression.vtype];
else else
@ -1107,6 +1125,9 @@ static bool parser_sy_pop(parser_t *parser, shunt *sy)
out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]); out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
if (!out) if (!out)
return false; return false;
if (ast_istype(exprs[0], ast_value) && asvalue[0]->constant) {
parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
}
out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out); out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
break; break;
} }