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Several small improvements (code style, warnings, comments, more tests),
in particular:

- 'lua_topointer' extended to handle strings
- raises an error in 'string.format("%10q")' ('%q' with modifiers)
- in the manual for 'string.format', the term "option" replaced by
  "conversion specifier" (the term used by the C standard)
This commit is contained in:
Roberto Ierusalimschy
2019-03-13 13:16:53 -03:00
parent 2c32bff609
commit cf71a5ddc7
8 changed files with 87 additions and 51 deletions
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15
lopcodes.h
View File

@@ -90,7 +90,6 @@ enum OpMode {iABC, iABx, iAsBx, iAx, isJ}; /* basic instruction formats */
#define MAXARG_B ((1<<SIZE_B)-1)
#define MAXARG_C ((1<<SIZE_C)-1)
#define OFFSET_sC (MAXARG_C >> 1)
#define MAXARG_Cx ((1<<(SIZE_C + 1))-1)
/* creates a mask with 'n' 1 bits at position 'p' */
@@ -233,8 +232,8 @@ OP_BANDK,/* A B C R(A) := R(B) & K(C):integer */
OP_BORK,/* A B C R(A) := R(B) | K(C):integer */
OP_BXORK,/* A B C R(A) := R(B) ~ K(C):integer */
OP_SHRI,/* A B C R(A) := R(B) >> C */
OP_SHLI,/* A B C R(A) := C << R(B) */
OP_SHRI,/* A B sC R(A) := R(B) >> C */
OP_SHLI,/* A B sC R(A) := C << R(B) */
OP_ADD,/* A B C R(A) := R(B) + R(C) */
OP_SUB,/* A B C R(A) := R(B) - R(C) */
@@ -272,7 +271,7 @@ OP_GTI,/* A sB if ((R(A) > sB) ~= k) then pc++ */
OP_GEI,/* A sB if ((R(A) >= sB) ~= k) then pc++ */
OP_TEST,/* A if (not R(A) == k) then pc++ */
OP_TESTSET,/* A B if (not R(B) == k) then R(A) := R(B) else pc++ */
OP_TESTSET,/* A B if (not R(B) == k) then pc++ else R(A) := R(B) */
OP_CALL,/* A B C R(A), ... ,R(A+C-2) := R(A)(R(A+1), ... ,R(A+B-1)) */
OP_TAILCALL,/* A B C return R(A)(R(A+1), ... ,R(A+B-1)) */
@@ -305,15 +304,15 @@ OP_EXTRAARG/* Ax extra (larger) argument for previous opcode */
} OpCode;
#define NUM_OPCODES (cast_int(OP_EXTRAARG) + 1)
#define NUM_OPCODES ((int)(OP_EXTRAARG) + 1)
/*===========================================================================
Notes:
(*) In OP_CALL, if (B == 0) then B = top. If (C == 0), then 'top' is
set to last_result+1, so next open instruction (OP_CALL, OP_RETURN*,
OP_SETLIST) may use 'top'.
(*) In OP_CALL, if (B == 0) then B = top - A. If (C == 0), then
'top' is set to last_result+1, so next open instruction (OP_CALL,
OP_RETURN*, OP_SETLIST) may use 'top'.
(*) In OP_VARARG, if (C == 0) then use actual number of varargs and
set top (like in OP_CALL with C == 0).